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-rw-r--r--ubifs-utils/mkfs.ubifs/.gitignore1
-rw-r--r--ubifs-utils/mkfs.ubifs/COPYING340
-rw-r--r--ubifs-utils/mkfs.ubifs/README9
-rw-r--r--ubifs-utils/mkfs.ubifs/compr.c219
-rw-r--r--ubifs-utils/mkfs.ubifs/compr.h46
-rw-r--r--ubifs-utils/mkfs.ubifs/crc16.c56
-rw-r--r--ubifs-utils/mkfs.ubifs/crc16.h27
-rw-r--r--ubifs-utils/mkfs.ubifs/defs.h92
-rw-r--r--ubifs-utils/mkfs.ubifs/devtable.c524
-rw-r--r--ubifs-utils/mkfs.ubifs/hashtable/hashtable.c277
-rw-r--r--ubifs-utils/mkfs.ubifs/hashtable/hashtable.h199
-rw-r--r--ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.c176
-rw-r--r--ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.h112
-rw-r--r--ubifs-utils/mkfs.ubifs/hashtable/hashtable_private.h85
-rw-r--r--ubifs-utils/mkfs.ubifs/key.h189
-rw-r--r--ubifs-utils/mkfs.ubifs/lpt.c578
-rw-r--r--ubifs-utils/mkfs.ubifs/lpt.h28
-rw-r--r--ubifs-utils/mkfs.ubifs/mkfs.ubifs.c2324
-rw-r--r--ubifs-utils/mkfs.ubifs/mkfs.ubifs.h150
-rw-r--r--ubifs-utils/mkfs.ubifs/ubifs.h441
20 files changed, 5873 insertions, 0 deletions
diff --git a/ubifs-utils/mkfs.ubifs/.gitignore b/ubifs-utils/mkfs.ubifs/.gitignore
new file mode 100644
index 0000000..6b0e85c
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/.gitignore
@@ -0,0 +1 @@
+/mkfs.ubifs
diff --git a/ubifs-utils/mkfs.ubifs/COPYING b/ubifs-utils/mkfs.ubifs/COPYING
new file mode 100644
index 0000000..60549be
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/COPYING
@@ -0,0 +1,340 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
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+ Preamble
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+ The licenses for most software are designed to take away your
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+Foundation's software and to any other program whose authors commit to
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+ When we speak of free software, we are referring to freedom, not
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diff --git a/ubifs-utils/mkfs.ubifs/README b/ubifs-utils/mkfs.ubifs/README
new file mode 100644
index 0000000..7e19939
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/README
@@ -0,0 +1,9 @@
+UBIFS File System - Make File System program
+
+* crc16.h and crc16.c were copied from the linux kernel.
+* crc32.h and crc32.c were copied from mtd-utils and amended.
+* ubifs.h is a selection of definitions from fs/ubifs/ubifs.h from the linux kernel.
+* key.h is copied from fs/ubifs/key.h from the linux kernel.
+* defs.h is a bunch of definitions to smooth things over.
+* lpt.c is a selection of functions copied from fs/ubifs/lpt.c from the linux kernel, and amended.
+* hashtable/* was downloaded from http://www.cl.cam.ac.uk/~cwc22/hashtable/
diff --git a/ubifs-utils/mkfs.ubifs/compr.c b/ubifs-utils/mkfs.ubifs/compr.c
new file mode 100644
index 0000000..34b2f60
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/compr.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation.
+ * Copyright (C) 2008 University of Szeged, Hungary
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy
+ * Adrian Hunter
+ * Zoltan Sogor
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <lzo/lzo1x.h>
+#include <linux/types.h>
+
+#define crc32 __zlib_crc32
+#include <zlib.h>
+#undef crc32
+
+#include "compr.h"
+#include "mkfs.ubifs.h"
+
+static void *lzo_mem;
+static unsigned long long errcnt = 0;
+static struct ubifs_info *c = &info_;
+
+#define DEFLATE_DEF_LEVEL Z_DEFAULT_COMPRESSION
+#define DEFLATE_DEF_WINBITS 11
+#define DEFLATE_DEF_MEMLEVEL 8
+
+static int zlib_deflate(void *in_buf, size_t in_len, void *out_buf,
+ size_t *out_len)
+{
+ z_stream strm;
+
+ strm.zalloc = NULL;
+ strm.zfree = NULL;
+
+ /*
+ * Match exactly the zlib parameters used by the Linux kernel crypto
+ * API.
+ */
+ if (deflateInit2(&strm, DEFLATE_DEF_LEVEL, Z_DEFLATED,
+ -DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL,
+ Z_DEFAULT_STRATEGY)) {
+ errcnt += 1;
+ return -1;
+ }
+
+ strm.next_in = in_buf;
+ strm.avail_in = in_len;
+ strm.total_in = 0;
+
+ strm.next_out = out_buf;
+ strm.avail_out = *out_len;
+ strm.total_out = 0;
+
+ if (deflate(&strm, Z_FINISH) != Z_STREAM_END) {
+ deflateEnd(&strm);
+ errcnt += 1;
+ return -1;
+ }
+
+ if (deflateEnd(&strm) != Z_OK) {
+ errcnt += 1;
+ return -1;
+ }
+
+ *out_len = strm.total_out;
+
+ return 0;
+}
+
+static int lzo_compress(void *in_buf, size_t in_len, void *out_buf,
+ size_t *out_len)
+{
+ lzo_uint len;
+ int ret;
+
+ len = *out_len;
+ ret = lzo1x_999_compress(in_buf, in_len, out_buf, &len, lzo_mem);
+ *out_len = len;
+
+ if (ret != LZO_E_OK) {
+ errcnt += 1;
+ return -1;
+ }
+
+ return 0;
+}
+
+static int no_compress(void *in_buf, size_t in_len, void *out_buf,
+ size_t *out_len)
+{
+ memcpy(out_buf, in_buf, in_len);
+ *out_len = in_len;
+ return 0;
+}
+
+static char *zlib_buf;
+
+static int favor_lzo_compress(void *in_buf, size_t in_len, void *out_buf,
+ size_t *out_len, int *type)
+{
+ int lzo_ret, zlib_ret;
+ size_t lzo_len, zlib_len;
+
+ lzo_len = zlib_len = *out_len;
+ lzo_ret = lzo_compress(in_buf, in_len, out_buf, &lzo_len);
+ zlib_ret = zlib_deflate(in_buf, in_len, zlib_buf, &zlib_len);
+
+ if (lzo_ret && zlib_ret)
+ /* Both compressors failed */
+ return -1;
+
+ if (!lzo_ret && !zlib_ret) {
+ double percent;
+
+ /* Both compressors succeeded */
+ if (lzo_len <= zlib_len )
+ goto select_lzo;
+
+ percent = (double)zlib_len / (double)lzo_len;
+ percent *= 100;
+ if (percent > 100 - c->favor_percent)
+ goto select_lzo;
+ goto select_zlib;
+ }
+
+ if (lzo_ret)
+ /* Only zlib compressor succeeded */
+ goto select_zlib;
+
+ /* Only LZO compressor succeeded */
+
+select_lzo:
+ *out_len = lzo_len;
+ *type = MKFS_UBIFS_COMPR_LZO;
+ return 0;
+
+select_zlib:
+ *out_len = zlib_len;
+ *type = MKFS_UBIFS_COMPR_ZLIB;
+ memcpy(out_buf, zlib_buf, zlib_len);
+ return 0;
+}
+
+int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len,
+ int type)
+{
+ int ret;
+
+ if (in_len < UBIFS_MIN_COMPR_LEN) {
+ no_compress(in_buf, in_len, out_buf, out_len);
+ return MKFS_UBIFS_COMPR_NONE;
+ }
+
+ if (c->favor_lzo)
+ ret = favor_lzo_compress(in_buf, in_len, out_buf, out_len, &type);
+ else {
+ switch (type) {
+ case MKFS_UBIFS_COMPR_LZO:
+ ret = lzo_compress(in_buf, in_len, out_buf, out_len);
+ break;
+ case MKFS_UBIFS_COMPR_ZLIB:
+ ret = zlib_deflate(in_buf, in_len, out_buf, out_len);
+ break;
+ case MKFS_UBIFS_COMPR_NONE:
+ ret = 1;
+ break;
+ default:
+ errcnt += 1;
+ ret = 1;
+ break;
+ }
+ }
+ if (ret || *out_len >= in_len) {
+ no_compress(in_buf, in_len, out_buf, out_len);
+ return MKFS_UBIFS_COMPR_NONE;
+ }
+ return type;
+}
+
+int init_compression(void)
+{
+ lzo_mem = malloc(LZO1X_999_MEM_COMPRESS);
+ if (!lzo_mem)
+ return -1;
+
+ zlib_buf = malloc(UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR);
+ if (!zlib_buf) {
+ free(lzo_mem);
+ return -1;
+ }
+
+ return 0;
+}
+
+void destroy_compression(void)
+{
+ free(zlib_buf);
+ free(lzo_mem);
+ if (errcnt)
+ fprintf(stderr, "%llu compression errors occurred\n", errcnt);
+}
diff --git a/ubifs-utils/mkfs.ubifs/compr.h b/ubifs-utils/mkfs.ubifs/compr.h
new file mode 100644
index 0000000..e3dd95c
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/compr.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation.
+ * Copyright (C) 2008 University of Szeged, Hungary
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy
+ * Adrian Hunter
+ * Zoltan Sogor
+ */
+
+#ifndef __UBIFS_COMPRESS_H__
+#define __UBIFS_COMPRESS_H__
+
+/*
+ * Compressors may end-up with more data in the output buffer than in the input
+ * buffer. This constant defined the worst case factor, i.e. we assume that the
+ * output buffer may be at max. WORST_COMPR_FACTOR times larger than input
+ * buffer.
+ */
+#define WORST_COMPR_FACTOR 4
+
+enum compression_type
+{
+ MKFS_UBIFS_COMPR_NONE,
+ MKFS_UBIFS_COMPR_LZO,
+ MKFS_UBIFS_COMPR_ZLIB,
+};
+
+int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len,
+ int type);
+int init_compression(void);
+void destroy_compression(void);
+
+#endif
diff --git a/ubifs-utils/mkfs.ubifs/crc16.c b/ubifs-utils/mkfs.ubifs/crc16.c
new file mode 100644
index 0000000..a19512e
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/crc16.c
@@ -0,0 +1,56 @@
+/*
+ * This code was taken from the linux kernel. The license is GPL Version 2.
+ */
+
+#include "crc16.h"
+
+/** CRC table for the CRC-16. The poly is 0x8005 (x^16 + x^15 + x^2 + 1) */
+uint16_t const crc16_table[256] = {
+ 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
+ 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
+ 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
+ 0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
+ 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
+ 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
+ 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
+ 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
+ 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
+ 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
+ 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
+ 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
+ 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
+ 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
+ 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
+ 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
+ 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
+ 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
+ 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
+ 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
+ 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
+ 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
+ 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
+ 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
+ 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
+ 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
+ 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
+ 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
+ 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
+ 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
+ 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
+ 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
+};
+
+/**
+ * crc16 - compute the CRC-16 for the data buffer
+ * @crc: previous CRC value
+ * @buffer: data pointer
+ * @len: number of bytes in the buffer
+ *
+ * Returns the updated CRC value.
+ */
+uint16_t crc16(uint16_t crc, uint8_t const *buffer, size_t len)
+{
+ while (len--)
+ crc = crc16_byte(crc, *buffer++);
+ return crc;
+}
diff --git a/ubifs-utils/mkfs.ubifs/crc16.h b/ubifs-utils/mkfs.ubifs/crc16.h
new file mode 100644
index 0000000..539d21a
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/crc16.h
@@ -0,0 +1,27 @@
+/*
+ * Implements the standard CRC-16:
+ * Width 16
+ * Poly 0x8005 (x^16 + x^15 + x^2 + 1)
+ * Init 0
+ *
+ * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
+ *
+ * This code was taken from the linux kernel. The license is GPL Version 2.
+ */
+
+#ifndef __CRC16_H__
+#define __CRC16_H__
+
+#include <stdlib.h>
+#include <stdint.h>
+
+extern uint16_t const crc16_table[256];
+
+extern uint16_t crc16(uint16_t crc, const uint8_t *buffer, size_t len);
+
+static inline uint16_t crc16_byte(uint16_t crc, const uint8_t data)
+{
+ return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
+}
+
+#endif /* __CRC16_H__ */
diff --git a/ubifs-utils/mkfs.ubifs/defs.h b/ubifs-utils/mkfs.ubifs/defs.h
new file mode 100644
index 0000000..1fa3316
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/defs.h
@@ -0,0 +1,92 @@
+/*
+ * Greate deal of the code was taken from the kernel UBIFS implementation, and
+ * this file contains some "glue" definitions.
+ */
+
+#ifndef __UBIFS_DEFS_H__
+#define __UBIFS_DEFS_H__
+
+#define t16(x) ({ \
+ uint16_t __b = (x); \
+ (__LITTLE_ENDIAN==__BYTE_ORDER) ? __b : bswap_16(__b); \
+})
+
+#define t32(x) ({ \
+ uint32_t __b = (x); \
+ (__LITTLE_ENDIAN==__BYTE_ORDER) ? __b : bswap_32(__b); \
+})
+
+#define t64(x) ({ \
+ uint64_t __b = (x); \
+ (__LITTLE_ENDIAN==__BYTE_ORDER) ? __b : bswap_64(__b); \
+})
+
+#define cpu_to_le16(x) ((__le16){t16(x)})
+#define cpu_to_le32(x) ((__le32){t32(x)})
+#define cpu_to_le64(x) ((__le64){t64(x)})
+
+#define le16_to_cpu(x) (t16((x)))
+#define le32_to_cpu(x) (t32((x)))
+#define le64_to_cpu(x) (t64((x)))
+
+#define unlikely(x) (x)
+
+#define ubifs_assert(x) ({})
+
+struct qstr
+{
+ char *name;
+ size_t len;
+};
+
+/**
+ * fls - find last (most-significant) bit set
+ * @x: the word to search
+ *
+ * This is defined the same way as ffs.
+ * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
+ */
+static inline int fls(int x)
+{
+ int r = 32;
+
+ if (!x)
+ return 0;
+ if (!(x & 0xffff0000u)) {
+ x <<= 16;
+ r -= 16;
+ }
+ if (!(x & 0xff000000u)) {
+ x <<= 8;
+ r -= 8;
+ }
+ if (!(x & 0xf0000000u)) {
+ x <<= 4;
+ r -= 4;
+ }
+ if (!(x & 0xc0000000u)) {
+ x <<= 2;
+ r -= 2;
+ }
+ if (!(x & 0x80000000u)) {
+ x <<= 1;
+ r -= 1;
+ }
+ return r;
+}
+
+#define do_div(n,base) ({ \
+int __res; \
+__res = ((unsigned long) n) % (unsigned) base; \
+n = ((unsigned long) n) / (unsigned) base; \
+__res; })
+
+#if INT_MAX != 0x7fffffff
+#error : sizeof(int) must be 4 for this program
+#endif
+
+#if (~0ULL) != 0xffffffffffffffffULL
+#error : sizeof(long long) must be 8 for this program
+#endif
+
+#endif
diff --git a/ubifs-utils/mkfs.ubifs/devtable.c b/ubifs-utils/mkfs.ubifs/devtable.c
new file mode 100644
index 0000000..dee035d
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/devtable.c
@@ -0,0 +1,524 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author: Artem Bityutskiy
+ *
+ * Part of the device table parsing code was taken from the mkfs.jffs2 utility.
+ * The original author of that code is Erik Andersen, hence:
+ * Copyright (C) 2001, 2002 Erik Andersen <andersen@codepoet.org>
+ */
+
+/*
+ * This file implemented device table support. Device table entries take the
+ * form of:
+ * <path> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
+ * /dev/mem c 640 0 0 1 1 0 0 -
+ *
+ * Type can be one of:
+ * f A regular file
+ * d Directory
+ * c Character special device file
+ * b Block special device file
+ * p Fifo (named pipe)
+ *
+ * Don't bother with symlinks (permissions are irrelevant), hard links (special
+ * cases of regular files), or sockets (why bother).
+ *
+ * Regular files must exist in the target root directory. If a char, block,
+ * fifo, or directory does not exist, it will be created.
+ *
+ * Please, refer the device_table.txt file which can be found at MTD utilities
+ * for more information about what the device table is.
+ */
+
+#include "mkfs.ubifs.h"
+#include "hashtable/hashtable.h"
+#include "hashtable/hashtable_itr.h"
+
+/*
+ * The hash table which contains paths to files/directories/device nodes
+ * referred to in the device table. For example, if the device table refers
+ * "/dev/loop0", the @path_htbl will contain "/dev" element.
+ */
+static struct hashtable *path_htbl;
+
+/* Hash function used for hash tables */
+static unsigned int r5_hash(void *s)
+{
+ unsigned int a = 0;
+ const signed char *str = s;
+
+ while (*str) {
+ a += *str << 4;
+ a += *str >> 4;
+ a *= 11;
+ str++;
+ }
+
+ return a;
+}
+
+/*
+ * Check whether 2 keys of a hash table are equivalent. The keys are path/file
+ * names, so we simply use 'strcmp()'.
+ */
+static int is_equivalent(void *k1, void *k2)
+{
+ return !strcmp(k1, k2);
+}
+
+/**
+ * separate_last - separate out the last path component
+ * @buf: the path to split
+ * @len: length of the @buf string
+ * @path: the beginning of path is returned here
+ * @name: the last path component is returned here
+ *
+ * This helper function separates out the the last component of the full path
+ * string. For example, "/dev/loop" would be split on "/dev" and "loop". This
+ * function allocates memory for @path and @name and return the result there.
+ * Returns zero in case of success and a negative error code in case of
+ * failure.
+ */
+static int separate_last(const char *buf, int len, char **path, char **name)
+{
+ int path_len = len, name_len;
+ const char *p = buf + len, *n;
+
+ while (*--p != '/')
+ path_len -= 1;
+
+ /* Drop the final '/' unless this is the root directory */
+ name_len = len - path_len;
+ n = buf + path_len;
+ if (path_len > 1)
+ path_len -= 1;
+
+ *path = malloc(path_len + 1);
+ if (!*path)
+ return err_msg("cannot allocate %d bytes of memory",
+ path_len + 1);
+ memcpy(*path, buf, path_len);
+ (*path)[path_len] = '\0';
+
+ *name = malloc(name_len + 1);
+ if (!*name) {
+ free(*path);
+ return err_msg("cannot allocate %d bytes of memory",
+ name_len + 1);
+ }
+ memcpy(*name, n, name_len + 1);
+
+ return 0;
+}
+
+static int interpret_table_entry(const char *line)
+{
+ char buf[1024], type, *path = NULL, *name = NULL;
+ int len;
+ struct path_htbl_element *ph_elt = NULL;
+ struct name_htbl_element *nh_elt = NULL;
+ unsigned int mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
+ unsigned int start = 0, increment = 0, count = 0;
+
+ if (sscanf(line, "%1023s %c %o %u %u %u %u %u %u %u",
+ buf, &type, &mode, &uid, &gid, &major, &minor,
+ &start, &increment, &count) < 0)
+ return sys_err_msg("sscanf failed");
+
+ dbg_msg(3, "name %s, type %c, mode %o, uid %u, gid %u, major %u, "
+ "minor %u, start %u, inc %u, cnt %u",
+ buf, type, mode, uid, gid, major, minor, start,
+ increment, count);
+
+ len = strnlen(buf, 1024);
+ if (len == 1024)
+ return err_msg("too long path");
+
+ if (!strcmp(buf, "/"))
+ return err_msg("device table entries require absolute paths");
+ if (buf[1] == '\0')
+ return err_msg("root directory cannot be created");
+ if (strstr(buf, "//"))
+ return err_msg("'//' cannot be used in the path");
+ if (buf[len - 1] == '/')
+ return err_msg("do not put '/' at the end");
+
+ if (strstr(buf, "/./") || strstr(buf, "/../") ||
+ !strcmp(buf + len - 2, "/.") || !strcmp(buf + len - 3, "/.."))
+ return err_msg("'.' and '..' cannot be used in the path");
+
+ switch (type) {
+ case 'd':
+ mode |= S_IFDIR;
+ break;
+ case 'f':
+ mode |= S_IFREG;
+ break;
+ case 'p':
+ mode |= S_IFIFO;
+ break;
+ case 'c':
+ mode |= S_IFCHR;
+ break;
+ case 'b':
+ mode |= S_IFBLK;
+ break;
+ default:
+ return err_msg("unsupported file type '%c'", type);
+ }
+
+ if (separate_last(buf, len, &path, &name))
+ return -1;
+
+ /*
+ * Check if this path already exist in the path hash table and add it
+ * if it is not.
+ */
+ ph_elt = hashtable_search(path_htbl, path);
+ if (!ph_elt) {
+ dbg_msg(3, "inserting '%s' into path hash table", path);
+ ph_elt = malloc(sizeof(struct path_htbl_element));
+ if (!ph_elt) {
+ err_msg("cannot allocate %zd bytes of memory",
+ sizeof(struct path_htbl_element));
+ goto out_free;
+ }
+
+ if (!hashtable_insert(path_htbl, path, ph_elt)) {
+ err_msg("cannot insert into path hash table");
+ goto out_free;
+ }
+
+ ph_elt->path = path;
+ path = NULL;
+ ph_elt->name_htbl = create_hashtable(128, &r5_hash,
+ &is_equivalent);
+ if (!ph_elt->name_htbl) {
+ err_msg("cannot create name hash table");
+ goto out_free;
+ }
+ }
+
+ if (increment != 0 && count == 0)
+ return err_msg("count cannot be zero if increment is non-zero");
+
+ /*
+ * Add the file/directory/device node (last component of the path) to
+ * the name hashtable. The name hashtable resides in the corresponding
+ * path hashtable element.
+ */
+
+ if (count == 0) {
+ /* This entry does not require any iterating */
+ nh_elt = malloc(sizeof(struct name_htbl_element));
+ if (!nh_elt) {
+ err_msg("cannot allocate %zd bytes of memory",
+ sizeof(struct name_htbl_element));
+ goto out_free;
+ }
+
+ nh_elt->mode = mode;
+ nh_elt->uid = uid;
+ nh_elt->gid = gid;
+ nh_elt->dev = makedev(major, minor);
+
+ dbg_msg(3, "inserting '%s' into name hash table (major %d, minor %d)",
+ name, major(nh_elt->dev), minor(nh_elt->dev));
+
+ if (hashtable_search(ph_elt->name_htbl, name))
+ return err_msg("'%s' is referred twice", buf);
+
+ nh_elt->name = name;
+ if (!hashtable_insert(ph_elt->name_htbl, name, nh_elt)) {
+ err_msg("cannot insert into name hash table");
+ goto out_free;
+ }
+ } else {
+ int i, num = start + count, len = strlen(name) + 20;
+ char *nm;
+
+ for (i = start; i < num; i++) {
+ nh_elt = malloc(sizeof(struct name_htbl_element));
+ if (!nh_elt) {
+ err_msg("cannot allocate %zd bytes of memory",
+ sizeof(struct name_htbl_element));
+ goto out_free;
+ }
+
+ nh_elt->mode = mode;
+ nh_elt->uid = uid;
+ nh_elt->gid = gid;
+ nh_elt->dev = makedev(major, minor + (i - start) * increment);
+
+ nm = malloc(len);
+ if (!nm) {
+ err_msg("cannot allocate %d bytes of memory", len);
+ goto out_free;
+ }
+
+ sprintf(nm, "%s%d", name, i);
+ nh_elt->name = nm;
+
+ dbg_msg(3, "inserting '%s' into name hash table (major %d, minor %d)",
+ nm, major(nh_elt->dev), minor(nh_elt->dev));
+
+ if (hashtable_search(ph_elt->name_htbl, nm)) {
+ err_msg("'%s' is referred twice", buf);
+ free (nm);
+ goto out_free;
+ }
+
+ if (!hashtable_insert(ph_elt->name_htbl, nm, nh_elt)) {
+ err_msg("cannot insert into name hash table");
+ free (nm);
+ goto out_free;
+ }
+ }
+ free(name);
+ name = NULL;
+ }
+
+ return 0;
+
+out_free:
+ free(ph_elt);
+ free(nh_elt);
+ free(path);
+ free(name);
+ return -1;
+}
+
+/**
+ * parse_devtable - parse the device table.
+ * @tbl_file: device table file name
+ *
+ * This function parses the device table and prepare the hash table which will
+ * later be used by mkfs.ubifs to create the specified files/device nodes.
+ * Returns zero in case of success and a negative error code in case of
+ * failure.
+ */
+int parse_devtable(const char *tbl_file)
+{
+ FILE *f;
+ char *line = NULL;
+ struct stat st;
+ size_t len;
+
+ dbg_msg(1, "parsing device table file '%s'", tbl_file);
+
+ path_htbl = create_hashtable(128, &r5_hash, &is_equivalent);
+ if (!path_htbl)
+ return err_msg("cannot create path hash table");
+
+ f = fopen(tbl_file, "r");
+ if (!f)
+ return sys_err_msg("cannot open '%s'", tbl_file);
+
+ if (fstat(fileno(f), &st) < 0) {
+ sys_err_msg("cannot stat '%s'", tbl_file);
+ goto out_close;
+ }
+
+ if (st.st_size < 10) {
+ sys_err_msg("'%s' is too short", tbl_file);
+ goto out_close;
+ }
+
+ /*
+ * The general plan now is to read in one line at a time, check for
+ * leading comment delimiters ('#'), then try and parse the line as a
+ * device table
+ */
+ while (getline(&line, &len, f) != -1) {
+ /* First trim off any white-space */
+ len = strlen(line);
+
+ /* Trim trailing white-space */
+ while (len > 0 && isspace(line[len - 1]))
+ line[--len] = '\0';
+ /* Trim leading white-space */
+ memmove(line, &line[strspn(line, " \n\r\t\v")], len);
+
+ /* How long are we after trimming? */
+ len = strlen(line);
+
+ /* If this is not a comment line, try to interpret it */
+ if (len && *line != '#') {
+ if (interpret_table_entry(line)) {
+ err_msg("cannot parse '%s'", line);
+ goto out_close;
+ }
+ }
+
+ free(line);
+ line = NULL;
+ }
+
+ dbg_msg(1, "finished parsing");
+ fclose(f);
+ return 0;
+
+out_close:
+ fclose(f);
+ free_devtable_info();
+ return -1;
+}
+
+/**
+ * devtbl_find_path - find a path in the path hash table.
+ * @path: UBIFS path to find.
+ *
+ * This looks up the path hash table. Returns the path hash table element
+ * reference if @path was found and %NULL if not.
+ */
+struct path_htbl_element *devtbl_find_path(const char *path)
+{
+ if (!path_htbl)
+ return NULL;
+
+ return hashtable_search(path_htbl, (void *)path);
+}
+
+/**
+ * devtbl_find_name - find a name in the name hash table.
+ * @ph_etl: path hash table element to find at
+ * @name: name to find
+ *
+ * This looks up the name hash table. Returns the name hash table element
+ * reference if @name found and %NULL if not.
+ */
+struct name_htbl_element *devtbl_find_name(struct path_htbl_element *ph_elt,
+ const char *name)
+{
+ if (!path_htbl)
+ return NULL;
+
+ return hashtable_search(ph_elt->name_htbl, (void *)name);
+}
+
+/**
+ * override_attributes - override inode attributes.
+ * @st: struct stat object to containing the attributes to override
+ * @ph_elt: path hash table element object
+ * @nh_elt: name hash table element object containing the new values
+ *
+ * The device table file may override attributes like UID of files. For
+ * example, the device table may contain a "/dev" entry, and the UBIFS FS on
+ * the host may contain "/dev" directory. In this case the attributes of the
+ * "/dev" directory inode has to be as the device table specifies.
+ *
+ * Note, the hash element is removed by this function as well.
+ */
+int override_attributes(struct stat *st, struct path_htbl_element *ph_elt,
+ struct name_htbl_element *nh_elt)
+{
+ if (!path_htbl)
+ return 0;
+
+ if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode) ||
+ S_ISFIFO(st->st_mode))
+ return err_msg("%s/%s both exists at UBIFS root at host, "
+ "and is referred from the device table",
+ strcmp(ph_elt->path, "/") ? ph_elt->path : "",
+ nh_elt->name);
+
+ if ((st->st_mode & S_IFMT) != (nh_elt->mode & S_IFMT))
+ return err_msg("%s/%s is referred from the device table also exists in "
+ "the UBIFS root directory at host, but the file type is "
+ "different", strcmp(ph_elt->path, "/") ? ph_elt->path : "",
+ nh_elt->name);
+
+ dbg_msg(3, "set UID %d, GID %d, mode %o for %s/%s as device table says",
+ nh_elt->uid, nh_elt->gid, nh_elt->mode, ph_elt->path, nh_elt->name);
+
+ st->st_uid = nh_elt->uid;
+ st->st_gid = nh_elt->gid;
+ st->st_mode = nh_elt->mode;
+
+ hashtable_remove(ph_elt->name_htbl, (void *)nh_elt->name);
+ return 0;
+}
+
+/**
+ * first_name_htbl_element - return first element of the name hash table.
+ * @ph_elt: the path hash table the name hash table belongs to
+ * @itr: double pointer to a 'struct hashtable_itr' object where the
+ * information about further iterations is stored
+ *
+ * This function implements name hash table iteration together with
+ * 'next_name_htbl_element()'. Returns the first name hash table element or
+ * %NULL if the hash table is empty.
+ */
+struct name_htbl_element *
+first_name_htbl_element(struct path_htbl_element *ph_elt,
+ struct hashtable_itr **itr)
+{
+ if (!path_htbl || !ph_elt || hashtable_count(ph_elt->name_htbl) == 0)
+ return NULL;
+
+ *itr = hashtable_iterator(ph_elt->name_htbl);
+ return hashtable_iterator_value(*itr);
+}
+
+/**
+ * first_name_htbl_element - return next element of the name hash table.
+ * @ph_elt: the path hash table the name hash table belongs to
+ * @itr: double pointer to a 'struct hashtable_itr' object where the
+ * information about further iterations is stored
+ *
+ * This function implements name hash table iteration together with
+ * 'first_name_htbl_element()'. Returns the next name hash table element or
+ * %NULL if there are no more elements.
+ */
+struct name_htbl_element *
+next_name_htbl_element(struct path_htbl_element *ph_elt,
+ struct hashtable_itr **itr)
+{
+ if (!path_htbl || !ph_elt || !hashtable_iterator_advance(*itr))
+ return NULL;
+
+ return hashtable_iterator_value(*itr);
+}
+
+/**
+ * free_devtable_info - free device table information.
+ *
+ * This function frees the path hash table and the name hash tables.
+ */
+void free_devtable_info(void)
+{
+ struct hashtable_itr *ph_itr;
+ struct path_htbl_element *ph_elt;
+
+ if (!path_htbl)
+ return;
+
+ if (hashtable_count(path_htbl) > 0) {
+ ph_itr = hashtable_iterator(path_htbl);
+ do {
+ ph_elt = hashtable_iterator_value(ph_itr);
+ /*
+ * Note, since we use the same string for the key and
+ * @name in the name hash table elements, we do not
+ * have to iterate name hash table because @name memory
+ * will be freed when freeing the key.
+ */
+ hashtable_destroy(ph_elt->name_htbl, 1);
+ } while (hashtable_iterator_advance(ph_itr));
+ }
+ hashtable_destroy(path_htbl, 1);
+}
diff --git a/ubifs-utils/mkfs.ubifs/hashtable/hashtable.c b/ubifs-utils/mkfs.ubifs/hashtable/hashtable.c
new file mode 100644
index 0000000..c1f99ed
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/hashtable/hashtable.c
@@ -0,0 +1,277 @@
+/* Copyright (C) 2004 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
+
+#define PROGRAM_NAME "hashtable"
+
+#include "common.h"
+#include "hashtable.h"
+#include "hashtable_private.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+/*
+Credit for primes table: Aaron Krowne
+ http://br.endernet.org/~akrowne/
+ http://planetmath.org/encyclopedia/GoodHashTablePrimes.html
+*/
+static const unsigned int primes[] = {
+53, 97, 193, 389,
+769, 1543, 3079, 6151,
+12289, 24593, 49157, 98317,
+196613, 393241, 786433, 1572869,
+3145739, 6291469, 12582917, 25165843,
+50331653, 100663319, 201326611, 402653189,
+805306457, 1610612741
+};
+const unsigned int prime_table_length = ARRAY_SIZE(primes);
+const float max_load_factor = 0.65;
+
+/*****************************************************************************/
+struct hashtable *
+create_hashtable(unsigned int minsize,
+ unsigned int (*hashf) (void*),
+ int (*eqf) (void*,void*))
+{
+ struct hashtable *h;
+ unsigned int pindex, size = primes[0];
+ /* Check requested hashtable isn't too large */
+ if (minsize > (1u << 30)) return NULL;
+ /* Enforce size as prime */
+ for (pindex=0; pindex < prime_table_length; pindex++) {
+ if (primes[pindex] > minsize) { size = primes[pindex]; break; }
+ }
+ h = (struct hashtable *)malloc(sizeof(struct hashtable));
+ if (NULL == h) return NULL; /*oom*/
+ h->table = (struct entry **)malloc(sizeof(struct entry*) * size);
+ if (NULL == h->table) { free(h); return NULL; } /*oom*/
+ memset(h->table, 0, size * sizeof(struct entry *));
+ h->tablelength = size;
+ h->primeindex = pindex;
+ h->entrycount = 0;
+ h->hashfn = hashf;
+ h->eqfn = eqf;
+ h->loadlimit = (unsigned int) ceil(size * max_load_factor);
+ return h;
+}
+
+/*****************************************************************************/
+unsigned int
+hash(struct hashtable *h, void *k)
+{
+ /* Aim to protect against poor hash functions by adding logic here
+ * - logic taken from java 1.4 hashtable source */
+ unsigned int i = h->hashfn(k);
+ i += ~(i << 9);
+ i ^= ((i >> 14) | (i << 18)); /* >>> */
+ i += (i << 4);
+ i ^= ((i >> 10) | (i << 22)); /* >>> */
+ return i;
+}
+
+/*****************************************************************************/
+static int
+hashtable_expand(struct hashtable *h)
+{
+ /* Double the size of the table to accomodate more entries */
+ struct entry **newtable;
+ struct entry *e;
+ struct entry **pE;
+ unsigned int newsize, i, index;
+ /* Check we're not hitting max capacity */
+ if (h->primeindex == (prime_table_length - 1)) return 0;
+ newsize = primes[++(h->primeindex)];
+
+ newtable = (struct entry **)malloc(sizeof(struct entry*) * newsize);
+ if (NULL != newtable)
+ {
+ memset(newtable, 0, newsize * sizeof(struct entry *));
+ /* This algorithm is not 'stable'. ie. it reverses the list
+ * when it transfers entries between the tables */
+ for (i = 0; i < h->tablelength; i++) {
+ while (NULL != (e = h->table[i])) {
+ h->table[i] = e->next;
+ index = indexFor(newsize,e->h);
+ e->next = newtable[index];
+ newtable[index] = e;
+ }
+ }
+ free(h->table);
+ h->table = newtable;
+ }
+ /* Plan B: realloc instead */
+ else
+ {
+ newtable = (struct entry **)
+ realloc(h->table, newsize * sizeof(struct entry *));
+ if (NULL == newtable) { (h->primeindex)--; return 0; }
+ h->table = newtable;
+ memset(newtable[h->tablelength], 0, newsize - h->tablelength);
+ for (i = 0; i < h->tablelength; i++) {
+ for (pE = &(newtable[i]), e = *pE; e != NULL; e = *pE) {
+ index = indexFor(newsize,e->h);
+ if (index == i)
+ {
+ pE = &(e->next);
+ }
+ else
+ {
+ *pE = e->next;
+ e->next = newtable[index];
+ newtable[index] = e;
+ }
+ }
+ }
+ }
+ h->tablelength = newsize;
+ h->loadlimit = (unsigned int) ceil(newsize * max_load_factor);
+ return -1;
+}
+
+/*****************************************************************************/
+unsigned int
+hashtable_count(struct hashtable *h)
+{
+ return h->entrycount;
+}
+
+/*****************************************************************************/
+int
+hashtable_insert(struct hashtable *h, void *k, void *v)
+{
+ /* This method allows duplicate keys - but they shouldn't be used */
+ unsigned int index;
+ struct entry *e;
+ if (++(h->entrycount) > h->loadlimit)
+ {
+ /* Ignore the return value. If expand fails, we should
+ * still try cramming just this value into the existing table
+ * -- we may not have memory for a larger table, but one more
+ * element may be ok. Next time we insert, we'll try expanding again.*/
+ hashtable_expand(h);
+ }
+ e = (struct entry *)malloc(sizeof(struct entry));
+ if (NULL == e) { --(h->entrycount); return 0; } /*oom*/
+ e->h = hash(h,k);
+ index = indexFor(h->tablelength,e->h);
+ e->k = k;
+ e->v = v;
+ e->next = h->table[index];
+ h->table[index] = e;
+ return -1;
+}
+
+/*****************************************************************************/
+void * /* returns value associated with key */
+hashtable_search(struct hashtable *h, void *k)
+{
+ struct entry *e;
+ unsigned int hashvalue, index;
+ hashvalue = hash(h,k);
+ index = indexFor(h->tablelength,hashvalue);
+ e = h->table[index];
+ while (NULL != e)
+ {
+ /* Check hash value to short circuit heavier comparison */
+ if ((hashvalue == e->h) && (h->eqfn(k, e->k))) return e->v;
+ e = e->next;
+ }
+ return NULL;
+}
+
+/*****************************************************************************/
+void * /* returns value associated with key */
+hashtable_remove(struct hashtable *h, void *k)
+{
+ /* TODO: consider compacting the table when the load factor drops enough,
+ * or provide a 'compact' method. */
+
+ struct entry *e;
+ struct entry **pE;
+ void *v;
+ unsigned int hashvalue, index;
+
+ hashvalue = hash(h,k);
+ index = indexFor(h->tablelength,hash(h,k));
+ pE = &(h->table[index]);
+ e = *pE;
+ while (NULL != e)
+ {
+ /* Check hash value to short circuit heavier comparison */
+ if ((hashvalue == e->h) && (h->eqfn(k, e->k)))
+ {
+ *pE = e->next;
+ h->entrycount--;
+ v = e->v;
+ freekey(e->k);
+ free(e);
+ return v;
+ }
+ pE = &(e->next);
+ e = e->next;
+ }
+ return NULL;
+}
+
+/*****************************************************************************/
+/* destroy */
+void
+hashtable_destroy(struct hashtable *h, int free_values)
+{
+ unsigned int i;
+ struct entry *e, *f;
+ struct entry **table = h->table;
+ if (free_values)
+ {
+ for (i = 0; i < h->tablelength; i++)
+ {
+ e = table[i];
+ while (NULL != e)
+ { f = e; e = e->next; freekey(f->k); free(f->v); free(f); }
+ }
+ }
+ else
+ {
+ for (i = 0; i < h->tablelength; i++)
+ {
+ e = table[i];
+ while (NULL != e)
+ { f = e; e = e->next; freekey(f->k); free(f); }
+ }
+ }
+ free(h->table);
+ free(h);
+}
+
+/*
+ * Copyright (c) 2002, Christopher Clark
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
diff --git a/ubifs-utils/mkfs.ubifs/hashtable/hashtable.h b/ubifs-utils/mkfs.ubifs/hashtable/hashtable.h
new file mode 100644
index 0000000..c0b0acd
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/hashtable/hashtable.h
@@ -0,0 +1,199 @@
+/* Copyright (C) 2002 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
+
+#ifndef __HASHTABLE_CWC22_H__
+#define __HASHTABLE_CWC22_H__
+
+struct hashtable;
+
+/* Example of use:
+ *
+ * struct hashtable *h;
+ * struct some_key *k;
+ * struct some_value *v;
+ *
+ * static unsigned int hash_from_key_fn( void *k );
+ * static int keys_equal_fn ( void *key1, void *key2 );
+ *
+ * h = create_hashtable(16, hash_from_key_fn, keys_equal_fn);
+ * k = (struct some_key *) malloc(sizeof(struct some_key));
+ * v = (struct some_value *) malloc(sizeof(struct some_value));
+ *
+ * (initialise k and v to suitable values)
+ *
+ * if (! hashtable_insert(h,k,v) )
+ * { exit(-1); }
+ *
+ * if (NULL == (found = hashtable_search(h,k) ))
+ * { printf("not found!"); }
+ *
+ * if (NULL == (found = hashtable_remove(h,k) ))
+ * { printf("Not found\n"); }
+ *
+ */
+
+/* Macros may be used to define type-safe(r) hashtable access functions, with
+ * methods specialized to take known key and value types as parameters.
+ *
+ * Example:
+ *
+ * Insert this at the start of your file:
+ *
+ * DEFINE_HASHTABLE_INSERT(insert_some, struct some_key, struct some_value);
+ * DEFINE_HASHTABLE_SEARCH(search_some, struct some_key, struct some_value);
+ * DEFINE_HASHTABLE_REMOVE(remove_some, struct some_key, struct some_value);
+ *
+ * This defines the functions 'insert_some', 'search_some' and 'remove_some'.
+ * These operate just like hashtable_insert etc., with the same parameters,
+ * but their function signatures have 'struct some_key *' rather than
+ * 'void *', and hence can generate compile time errors if your program is
+ * supplying incorrect data as a key (and similarly for value).
+ *
+ * Note that the hash and key equality functions passed to create_hashtable
+ * still take 'void *' parameters instead of 'some key *'. This shouldn't be
+ * a difficult issue as they're only defined and passed once, and the other
+ * functions will ensure that only valid keys are supplied to them.
+ *
+ * The cost for this checking is increased code size and runtime overhead
+ * - if performance is important, it may be worth switching back to the
+ * unsafe methods once your program has been debugged with the safe methods.
+ * This just requires switching to some simple alternative defines - eg:
+ * #define insert_some hashtable_insert
+ *
+ */
+
+/*****************************************************************************
+ * create_hashtable
+
+ * @name create_hashtable
+ * @param minsize minimum initial size of hashtable
+ * @param hashfunction function for hashing keys
+ * @param key_eq_fn function for determining key equality
+ * @return newly created hashtable or NULL on failure
+ */
+
+struct hashtable *
+create_hashtable(unsigned int minsize,
+ unsigned int (*hashfunction) (void*),
+ int (*key_eq_fn) (void*,void*));
+
+/*****************************************************************************
+ * hashtable_insert
+
+ * @name hashtable_insert
+ * @param h the hashtable to insert into
+ * @param k the key - hashtable claims ownership and will free on removal
+ * @param v the value - does not claim ownership
+ * @return non-zero for successful insertion
+ *
+ * This function will cause the table to expand if the insertion would take
+ * the ratio of entries to table size over the maximum load factor.
+ *
+ * This function does not check for repeated insertions with a duplicate key.
+ * The value returned when using a duplicate key is undefined -- when
+ * the hashtable changes size, the order of retrieval of duplicate key
+ * entries is reversed.
+ * If in doubt, remove before insert.
+ */
+
+int
+hashtable_insert(struct hashtable *h, void *k, void *v);
+
+#define DEFINE_HASHTABLE_INSERT(fnname, keytype, valuetype) \
+int fnname (struct hashtable *h, keytype *k, valuetype *v) \
+{ \
+ return hashtable_insert(h,k,v); \
+}
+
+/*****************************************************************************
+ * hashtable_search
+
+ * @name hashtable_search
+ * @param h the hashtable to search
+ * @param k the key to search for - does not claim ownership
+ * @return the value associated with the key, or NULL if none found
+ */
+
+void *
+hashtable_search(struct hashtable *h, void *k);
+
+#define DEFINE_HASHTABLE_SEARCH(fnname, keytype, valuetype) \
+valuetype * fnname (struct hashtable *h, keytype *k) \
+{ \
+ return (valuetype *) (hashtable_search(h,k)); \
+}
+
+/*****************************************************************************
+ * hashtable_remove
+
+ * @name hashtable_remove
+ * @param h the hashtable to remove the item from
+ * @param k the key to search for - does not claim ownership
+ * @return the value associated with the key, or NULL if none found
+ */
+
+void * /* returns value */
+hashtable_remove(struct hashtable *h, void *k);
+
+#define DEFINE_HASHTABLE_REMOVE(fnname, keytype, valuetype) \
+valuetype * fnname (struct hashtable *h, keytype *k) \
+{ \
+ return (valuetype *) (hashtable_remove(h,k)); \
+}
+
+
+/*****************************************************************************
+ * hashtable_count
+
+ * @name hashtable_count
+ * @param h the hashtable
+ * @return the number of items stored in the hashtable
+ */
+unsigned int
+hashtable_count(struct hashtable *h);
+
+
+/*****************************************************************************
+ * hashtable_destroy
+
+ * @name hashtable_destroy
+ * @param h the hashtable
+ * @param free_values whether to call 'free' on the remaining values
+ */
+
+void
+hashtable_destroy(struct hashtable *h, int free_values);
+
+#endif /* __HASHTABLE_CWC22_H__ */
+
+/*
+ * Copyright (c) 2002, Christopher Clark
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
diff --git a/ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.c b/ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.c
new file mode 100644
index 0000000..d102453
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.c
@@ -0,0 +1,176 @@
+/* Copyright (C) 2002, 2004 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
+
+#include "hashtable.h"
+#include "hashtable_private.h"
+#include "hashtable_itr.h"
+#include <stdlib.h> /* defines NULL */
+
+/*****************************************************************************/
+/* hashtable_iterator - iterator constructor */
+
+struct hashtable_itr *
+hashtable_iterator(struct hashtable *h)
+{
+ unsigned int i, tablelength;
+ struct hashtable_itr *itr = (struct hashtable_itr *)
+ malloc(sizeof(struct hashtable_itr));
+ if (NULL == itr) return NULL;
+ itr->h = h;
+ itr->e = NULL;
+ itr->parent = NULL;
+ tablelength = h->tablelength;
+ itr->index = tablelength;
+ if (0 == h->entrycount) return itr;
+
+ for (i = 0; i < tablelength; i++)
+ {
+ if (NULL != h->table[i])
+ {
+ itr->e = h->table[i];
+ itr->index = i;
+ break;
+ }
+ }
+ return itr;
+}
+
+/*****************************************************************************/
+/* advance - advance the iterator to the next element
+ * returns zero if advanced to end of table */
+
+int
+hashtable_iterator_advance(struct hashtable_itr *itr)
+{
+ unsigned int j,tablelength;
+ struct entry **table;
+ struct entry *next;
+ if (NULL == itr->e) return 0; /* stupidity check */
+
+ next = itr->e->next;
+ if (NULL != next)
+ {
+ itr->parent = itr->e;
+ itr->e = next;
+ return -1;
+ }
+ tablelength = itr->h->tablelength;
+ itr->parent = NULL;
+ if (tablelength <= (j = ++(itr->index)))
+ {
+ itr->e = NULL;
+ return 0;
+ }
+ table = itr->h->table;
+ while (NULL == (next = table[j]))
+ {
+ if (++j >= tablelength)
+ {
+ itr->index = tablelength;
+ itr->e = NULL;
+ return 0;
+ }
+ }
+ itr->index = j;
+ itr->e = next;
+ return -1;
+}
+
+/*****************************************************************************/
+/* remove - remove the entry at the current iterator position
+ * and advance the iterator, if there is a successive
+ * element.
+ * If you want the value, read it before you remove:
+ * beware memory leaks if you don't.
+ * Returns zero if end of iteration. */
+
+int
+hashtable_iterator_remove(struct hashtable_itr *itr)
+{
+ struct entry *remember_e, *remember_parent;
+ int ret;
+
+ /* Do the removal */
+ if (NULL == (itr->parent))
+ {
+ /* element is head of a chain */
+ itr->h->table[itr->index] = itr->e->next;
+ } else {
+ /* element is mid-chain */
+ itr->parent->next = itr->e->next;
+ }
+ /* itr->e is now outside the hashtable */
+ remember_e = itr->e;
+ itr->h->entrycount--;
+ freekey(remember_e->k);
+
+ /* Advance the iterator, correcting the parent */
+ remember_parent = itr->parent;
+ ret = hashtable_iterator_advance(itr);
+ if (itr->parent == remember_e) { itr->parent = remember_parent; }
+ free(remember_e);
+ return ret;
+}
+
+/*****************************************************************************/
+int /* returns zero if not found */
+hashtable_iterator_search(struct hashtable_itr *itr,
+ struct hashtable *h, void *k)
+{
+ struct entry *e, *parent;
+ unsigned int hashvalue, index;
+
+ hashvalue = hash(h,k);
+ index = indexFor(h->tablelength,hashvalue);
+
+ e = h->table[index];
+ parent = NULL;
+ while (NULL != e)
+ {
+ /* Check hash value to short circuit heavier comparison */
+ if ((hashvalue == e->h) && (h->eqfn(k, e->k)))
+ {
+ itr->index = index;
+ itr->e = e;
+ itr->parent = parent;
+ itr->h = h;
+ return -1;
+ }
+ parent = e;
+ e = e->next;
+ }
+ return 0;
+}
+
+
+/*
+ * Copyright (c) 2002, 2004, Christopher Clark
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
diff --git a/ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.h b/ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.h
new file mode 100644
index 0000000..5c94a04
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/hashtable/hashtable_itr.h
@@ -0,0 +1,112 @@
+/* Copyright (C) 2002, 2004 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
+
+#ifndef __HASHTABLE_ITR_CWC22__
+#define __HASHTABLE_ITR_CWC22__
+#include "hashtable.h"
+#include "hashtable_private.h" /* needed to enable inlining */
+
+/*****************************************************************************/
+/* This struct is only concrete here to allow the inlining of two of the
+ * accessor functions. */
+struct hashtable_itr
+{
+ struct hashtable *h;
+ struct entry *e;
+ struct entry *parent;
+ unsigned int index;
+};
+
+
+/*****************************************************************************/
+/* hashtable_iterator
+ */
+
+struct hashtable_itr *
+hashtable_iterator(struct hashtable *h);
+
+/*****************************************************************************/
+/* hashtable_iterator_key
+ * - return the value of the (key,value) pair at the current position */
+
+static inline void *
+hashtable_iterator_key(struct hashtable_itr *i)
+{
+ return i->e->k;
+}
+
+/*****************************************************************************/
+/* value - return the value of the (key,value) pair at the current position */
+
+static inline void *
+hashtable_iterator_value(struct hashtable_itr *i)
+{
+ return i->e->v;
+}
+
+/*****************************************************************************/
+/* advance - advance the iterator to the next element
+ * returns zero if advanced to end of table */
+
+int
+hashtable_iterator_advance(struct hashtable_itr *itr);
+
+/*****************************************************************************/
+/* remove - remove current element and advance the iterator to the next element
+ * NB: if you need the value to free it, read it before
+ * removing. ie: beware memory leaks!
+ * returns zero if advanced to end of table */
+
+int
+hashtable_iterator_remove(struct hashtable_itr *itr);
+
+/*****************************************************************************/
+/* search - overwrite the supplied iterator, to point to the entry
+ * matching the supplied key.
+ h points to the hashtable to be searched.
+ * returns zero if not found. */
+int
+hashtable_iterator_search(struct hashtable_itr *itr,
+ struct hashtable *h, void *k);
+
+#define DEFINE_HASHTABLE_ITERATOR_SEARCH(fnname, keytype) \
+int fnname (struct hashtable_itr *i, struct hashtable *h, keytype *k) \
+{ \
+ return (hashtable_iterator_search(i,h,k)); \
+}
+
+
+
+#endif /* __HASHTABLE_ITR_CWC22__*/
+
+/*
+ * Copyright (c) 2002, 2004, Christopher Clark
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
diff --git a/ubifs-utils/mkfs.ubifs/hashtable/hashtable_private.h b/ubifs-utils/mkfs.ubifs/hashtable/hashtable_private.h
new file mode 100644
index 0000000..3a558e6
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/hashtable/hashtable_private.h
@@ -0,0 +1,85 @@
+/* Copyright (C) 2002, 2004 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
+
+#ifndef __HASHTABLE_PRIVATE_CWC22_H__
+#define __HASHTABLE_PRIVATE_CWC22_H__
+
+#include "hashtable.h"
+
+/*****************************************************************************/
+struct entry
+{
+ void *k, *v;
+ unsigned int h;
+ struct entry *next;
+};
+
+struct hashtable {
+ unsigned int tablelength;
+ struct entry **table;
+ unsigned int entrycount;
+ unsigned int loadlimit;
+ unsigned int primeindex;
+ unsigned int (*hashfn) (void *k);
+ int (*eqfn) (void *k1, void *k2);
+};
+
+/*****************************************************************************/
+unsigned int
+hash(struct hashtable *h, void *k);
+
+/*****************************************************************************/
+/* indexFor */
+static inline unsigned int
+indexFor(unsigned int tablelength, unsigned int hashvalue) {
+ return (hashvalue % tablelength);
+};
+
+/* Only works if tablelength == 2^N */
+/*static inline unsigned int
+indexFor(unsigned int tablelength, unsigned int hashvalue)
+{
+ return (hashvalue & (tablelength - 1u));
+}
+*/
+
+/*****************************************************************************/
+#define freekey(X) free(X)
+/*define freekey(X) ; */
+
+
+/*****************************************************************************/
+
+#endif /* __HASHTABLE_PRIVATE_CWC22_H__*/
+
+/*
+ * Copyright (c) 2002, Christopher Clark
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
diff --git a/ubifs-utils/mkfs.ubifs/key.h b/ubifs-utils/mkfs.ubifs/key.h
new file mode 100644
index 0000000..d3a02d4
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/key.h
@@ -0,0 +1,189 @@
+/*
+ * This file is part of UBIFS.
+ *
+ * Copyright (C) 2006-2008 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy (Битюцкий Артём)
+ * Adrian Hunter
+ */
+
+/*
+ * This header contains various key-related definitions and helper function.
+ * UBIFS allows several key schemes, so we access key fields only via these
+ * helpers. At the moment only one key scheme is supported.
+ *
+ * Simple key scheme
+ * ~~~~~~~~~~~~~~~~~
+ *
+ * Keys are 64-bits long. First 32-bits are inode number (parent inode number
+ * in case of direntry key). Next 3 bits are node type. The last 29 bits are
+ * 4KiB offset in case of inode node, and direntry hash in case of a direntry
+ * node. We use "r5" hash borrowed from reiserfs.
+ */
+
+#ifndef __UBIFS_KEY_H__
+#define __UBIFS_KEY_H__
+
+/**
+ * key_mask_hash - mask a valid hash value.
+ * @val: value to be masked
+ *
+ * We use hash values as offset in directories, so values %0 and %1 are
+ * reserved for "." and "..". %2 is reserved for "end of readdir" marker. This
+ * function makes sure the reserved values are not used.
+ */
+static inline uint32_t key_mask_hash(uint32_t hash)
+{
+ hash &= UBIFS_S_KEY_HASH_MASK;
+ if (unlikely(hash <= 2))
+ hash += 3;
+ return hash;
+}
+
+/**
+ * key_r5_hash - R5 hash function (borrowed from reiserfs).
+ * @s: direntry name
+ * @len: name length
+ */
+static inline uint32_t key_r5_hash(const char *s, int len)
+{
+ uint32_t a = 0;
+ const signed char *str = (const signed char *)s;
+
+ len = len;
+ while (*str) {
+ a += *str << 4;
+ a += *str >> 4;
+ a *= 11;
+ str++;
+ }
+
+ return key_mask_hash(a);
+}
+
+/**
+ * key_test_hash - testing hash function.
+ * @str: direntry name
+ * @len: name length
+ */
+static inline uint32_t key_test_hash(const char *str, int len)
+{
+ uint32_t a = 0;
+
+ len = min_t(uint32_t, len, 4);
+ memcpy(&a, str, len);
+ return key_mask_hash(a);
+}
+
+/**
+ * ino_key_init - initialize inode key.
+ * @c: UBIFS file-system description object
+ * @key: key to initialize
+ * @inum: inode number
+ */
+static inline void ino_key_init(union ubifs_key *key, ino_t inum)
+{
+ key->u32[0] = inum;
+ key->u32[1] = UBIFS_INO_KEY << UBIFS_S_KEY_BLOCK_BITS;
+}
+
+/**
+ * dent_key_init - initialize directory entry key.
+ * @c: UBIFS file-system description object
+ * @key: key to initialize
+ * @inum: parent inode number
+ * @nm: direntry name and length
+ */
+static inline void dent_key_init(const struct ubifs_info *c,
+ union ubifs_key *key, ino_t inum,
+ const struct qstr *nm)
+{
+ uint32_t hash = c->key_hash(nm->name, nm->len);
+
+ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
+ key->u32[0] = inum;
+ key->u32[1] = hash | (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS);
+}
+
+/**
+ * data_key_init - initialize data key.
+ * @c: UBIFS file-system description object
+ * @key: key to initialize
+ * @inum: inode number
+ * @block: block number
+ */
+static inline void data_key_init(union ubifs_key *key, ino_t inum,
+ unsigned int block)
+{
+ ubifs_assert(!(block & ~UBIFS_S_KEY_BLOCK_MASK));
+ key->u32[0] = inum;
+ key->u32[1] = block | (UBIFS_DATA_KEY << UBIFS_S_KEY_BLOCK_BITS);
+}
+
+/**
+ * key_write - transform a key from in-memory format.
+ * @c: UBIFS file-system description object
+ * @from: the key to transform
+ * @to: the key to store the result
+ */
+static inline void key_write(const union ubifs_key *from, void *to)
+{
+ union ubifs_key *t = to;
+
+ t->j32[0] = cpu_to_le32(from->u32[0]);
+ t->j32[1] = cpu_to_le32(from->u32[1]);
+ memset(to + 8, 0, UBIFS_MAX_KEY_LEN - 8);
+}
+
+/**
+ * key_write_idx - transform a key from in-memory format for the index.
+ * @c: UBIFS file-system description object
+ * @from: the key to transform
+ * @to: the key to store the result
+ */
+static inline void key_write_idx(const union ubifs_key *from, void *to)
+{
+ union ubifs_key *t = to;
+
+ t->j32[0] = cpu_to_le32(from->u32[0]);
+ t->j32[1] = cpu_to_le32(from->u32[1]);
+}
+
+/**
+ * keys_cmp - compare keys.
+ * @c: UBIFS file-system description object
+ * @key1: the first key to compare
+ * @key2: the second key to compare
+ *
+ * This function compares 2 keys and returns %-1 if @key1 is less than
+ * @key2, 0 if the keys are equivalent and %1 if @key1 is greater than @key2.
+ */
+static inline int keys_cmp(const union ubifs_key *key1,
+ const union ubifs_key *key2)
+{
+ if (key1->u32[0] < key2->u32[0])
+ return -1;
+ if (key1->u32[0] > key2->u32[0])
+ return 1;
+ if (key1->u32[1] < key2->u32[1])
+ return -1;
+ if (key1->u32[1] > key2->u32[1])
+ return 1;
+
+ return 0;
+}
+
+#endif /* !__UBIFS_KEY_H__ */
diff --git a/ubifs-utils/mkfs.ubifs/lpt.c b/ubifs-utils/mkfs.ubifs/lpt.c
new file mode 100644
index 0000000..6aa0b88
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/lpt.c
@@ -0,0 +1,578 @@
+/*
+ * This file is part of UBIFS.
+ *
+ * Copyright (C) 2006, 2007 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Adrian Hunter
+ * Artem Bityutskiy
+ */
+
+#include "mkfs.ubifs.h"
+
+/**
+ * do_calc_lpt_geom - calculate sizes for the LPT area.
+ * @c: the UBIFS file-system description object
+ *
+ * Calculate the sizes of LPT bit fields, nodes, and tree, based on the
+ * properties of the flash and whether LPT is "big" (c->big_lpt).
+ */
+static void do_calc_lpt_geom(struct ubifs_info *c)
+{
+ int n, bits, per_leb_wastage;
+ long long sz, tot_wastage;
+
+ c->pnode_cnt = (c->main_lebs + UBIFS_LPT_FANOUT - 1) / UBIFS_LPT_FANOUT;
+
+ n = (c->pnode_cnt + UBIFS_LPT_FANOUT - 1) / UBIFS_LPT_FANOUT;
+ c->nnode_cnt = n;
+ while (n > 1) {
+ n = (n + UBIFS_LPT_FANOUT - 1) / UBIFS_LPT_FANOUT;
+ c->nnode_cnt += n;
+ }
+
+ c->lpt_hght = 1;
+ n = UBIFS_LPT_FANOUT;
+ while (n < c->pnode_cnt) {
+ c->lpt_hght += 1;
+ n <<= UBIFS_LPT_FANOUT_SHIFT;
+ }
+
+ c->space_bits = fls(c->leb_size) - 3;
+ c->lpt_lnum_bits = fls(c->lpt_lebs);
+ c->lpt_offs_bits = fls(c->leb_size - 1);
+ c->lpt_spc_bits = fls(c->leb_size);
+
+ n = (c->max_leb_cnt + UBIFS_LPT_FANOUT - 1) / UBIFS_LPT_FANOUT;
+ c->pcnt_bits = fls(n - 1);
+
+ c->lnum_bits = fls(c->max_leb_cnt - 1);
+
+ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
+ (c->big_lpt ? c->pcnt_bits : 0) +
+ (c->space_bits * 2 + 1) * UBIFS_LPT_FANOUT;
+ c->pnode_sz = (bits + 7) / 8;
+
+ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
+ (c->big_lpt ? c->pcnt_bits : 0) +
+ (c->lpt_lnum_bits + c->lpt_offs_bits) * UBIFS_LPT_FANOUT;
+ c->nnode_sz = (bits + 7) / 8;
+
+ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
+ c->lpt_lebs * c->lpt_spc_bits * 2;
+ c->ltab_sz = (bits + 7) / 8;
+
+ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
+ c->lnum_bits * c->lsave_cnt;
+ c->lsave_sz = (bits + 7) / 8;
+
+ /* Calculate the minimum LPT size */
+ c->lpt_sz = (long long)c->pnode_cnt * c->pnode_sz;
+ c->lpt_sz += (long long)c->nnode_cnt * c->nnode_sz;
+ c->lpt_sz += c->ltab_sz;
+ c->lpt_sz += c->lsave_sz;
+
+ /* Add wastage */
+ sz = c->lpt_sz;
+ per_leb_wastage = max_t(int, c->pnode_sz, c->nnode_sz);
+ sz += per_leb_wastage;
+ tot_wastage = per_leb_wastage;
+ while (sz > c->leb_size) {
+ sz += per_leb_wastage;
+ sz -= c->leb_size;
+ tot_wastage += per_leb_wastage;
+ }
+ tot_wastage += ALIGN(sz, c->min_io_size) - sz;
+ c->lpt_sz += tot_wastage;
+}
+
+/**
+ * calc_dflt_lpt_geom - calculate default LPT geometry.
+ * @c: the UBIFS file-system description object
+ * @main_lebs: number of main area LEBs is passed and returned here
+ * @big_lpt: whether the LPT area is "big" is returned here
+ *
+ * The size of the LPT area depends on parameters that themselves are dependent
+ * on the size of the LPT area. This function, successively recalculates the LPT
+ * area geometry until the parameters and resultant geometry are consistent.
+ *
+ * This function returns %0 on success and a negative error code on failure.
+ */
+int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, int *big_lpt)
+{
+ int i, lebs_needed;
+ long long sz;
+
+ /* Start by assuming the minimum number of LPT LEBs */
+ c->lpt_lebs = UBIFS_MIN_LPT_LEBS;
+ c->main_lebs = *main_lebs - c->lpt_lebs;
+ if (c->main_lebs <= 0)
+ return -EINVAL;
+
+ /* And assume we will use the small LPT model */
+ c->big_lpt = 0;
+
+ /*
+ * Calculate the geometry based on assumptions above and then see if it
+ * makes sense
+ */
+ do_calc_lpt_geom(c);
+
+ /* Small LPT model must have lpt_sz < leb_size */
+ if (c->lpt_sz > c->leb_size) {
+ /* Nope, so try again using big LPT model */
+ c->big_lpt = 1;
+ do_calc_lpt_geom(c);
+ }
+
+ /* Now check there are enough LPT LEBs */
+ for (i = 0; i < 64 ; i++) {
+ sz = c->lpt_sz * 4; /* Allow 4 times the size */
+ sz += c->leb_size - 1;
+ do_div(sz, c->leb_size);
+ lebs_needed = sz;
+ if (lebs_needed > c->lpt_lebs) {
+ /* Not enough LPT LEBs so try again with more */
+ c->lpt_lebs = lebs_needed;
+ c->main_lebs = *main_lebs - c->lpt_lebs;
+ if (c->main_lebs <= 0)
+ return -EINVAL;
+ do_calc_lpt_geom(c);
+ continue;
+ }
+ if (c->ltab_sz > c->leb_size) {
+ err_msg("LPT ltab too big");
+ return -EINVAL;
+ }
+ *main_lebs = c->main_lebs;
+ *big_lpt = c->big_lpt;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+/**
+ * pack_bits - pack bit fields end-to-end.
+ * @addr: address at which to pack (passed and next address returned)
+ * @pos: bit position at which to pack (passed and next position returned)
+ * @val: value to pack
+ * @nrbits: number of bits of value to pack (1-32)
+ */
+static void pack_bits(uint8_t **addr, int *pos, uint32_t val, int nrbits)
+{
+ uint8_t *p = *addr;
+ int b = *pos;
+
+ if (b) {
+ *p |= ((uint8_t)val) << b;
+ nrbits += b;
+ if (nrbits > 8) {
+ *++p = (uint8_t)(val >>= (8 - b));
+ if (nrbits > 16) {
+ *++p = (uint8_t)(val >>= 8);
+ if (nrbits > 24) {
+ *++p = (uint8_t)(val >>= 8);
+ if (nrbits > 32)
+ *++p = (uint8_t)(val >>= 8);
+ }
+ }
+ }
+ } else {
+ *p = (uint8_t)val;
+ if (nrbits > 8) {
+ *++p = (uint8_t)(val >>= 8);
+ if (nrbits > 16) {
+ *++p = (uint8_t)(val >>= 8);
+ if (nrbits > 24)
+ *++p = (uint8_t)(val >>= 8);
+ }
+ }
+ }
+ b = nrbits & 7;
+ if (b == 0)
+ p++;
+ *addr = p;
+ *pos = b;
+}
+
+/**
+ * pack_pnode - pack all the bit fields of a pnode.
+ * @c: UBIFS file-system description object
+ * @buf: buffer into which to pack
+ * @pnode: pnode to pack
+ */
+static void pack_pnode(struct ubifs_info *c, void *buf,
+ struct ubifs_pnode *pnode)
+{
+ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
+ int i, pos = 0;
+ uint16_t crc;
+
+ pack_bits(&addr, &pos, UBIFS_LPT_PNODE, UBIFS_LPT_TYPE_BITS);
+ if (c->big_lpt)
+ pack_bits(&addr, &pos, pnode->num, c->pcnt_bits);
+ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
+ pack_bits(&addr, &pos, pnode->lprops[i].free >> 3,
+ c->space_bits);
+ pack_bits(&addr, &pos, pnode->lprops[i].dirty >> 3,
+ c->space_bits);
+ if (pnode->lprops[i].flags & LPROPS_INDEX)
+ pack_bits(&addr, &pos, 1, 1);
+ else
+ pack_bits(&addr, &pos, 0, 1);
+ }
+ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
+ c->pnode_sz - UBIFS_LPT_CRC_BYTES);
+ addr = buf;
+ pos = 0;
+ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
+}
+
+/**
+ * pack_nnode - pack all the bit fields of a nnode.
+ * @c: UBIFS file-system description object
+ * @buf: buffer into which to pack
+ * @nnode: nnode to pack
+ */
+static void pack_nnode(struct ubifs_info *c, void *buf,
+ struct ubifs_nnode *nnode)
+{
+ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
+ int i, pos = 0;
+ uint16_t crc;
+
+ pack_bits(&addr, &pos, UBIFS_LPT_NNODE, UBIFS_LPT_TYPE_BITS);
+ if (c->big_lpt)
+ pack_bits(&addr, &pos, nnode->num, c->pcnt_bits);
+ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
+ int lnum = nnode->nbranch[i].lnum;
+
+ if (lnum == 0)
+ lnum = c->lpt_last + 1;
+ pack_bits(&addr, &pos, lnum - c->lpt_first, c->lpt_lnum_bits);
+ pack_bits(&addr, &pos, nnode->nbranch[i].offs,
+ c->lpt_offs_bits);
+ }
+ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
+ c->nnode_sz - UBIFS_LPT_CRC_BYTES);
+ addr = buf;
+ pos = 0;
+ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
+}
+
+/**
+ * pack_ltab - pack the LPT's own lprops table.
+ * @c: UBIFS file-system description object
+ * @buf: buffer into which to pack
+ * @ltab: LPT's own lprops table to pack
+ */
+static void pack_ltab(struct ubifs_info *c, void *buf,
+ struct ubifs_lpt_lprops *ltab)
+{
+ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
+ int i, pos = 0;
+ uint16_t crc;
+
+ pack_bits(&addr, &pos, UBIFS_LPT_LTAB, UBIFS_LPT_TYPE_BITS);
+ for (i = 0; i < c->lpt_lebs; i++) {
+ pack_bits(&addr, &pos, ltab[i].free, c->lpt_spc_bits);
+ pack_bits(&addr, &pos, ltab[i].dirty, c->lpt_spc_bits);
+ }
+ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
+ c->ltab_sz - UBIFS_LPT_CRC_BYTES);
+ addr = buf;
+ pos = 0;
+ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
+}
+
+/**
+ * pack_lsave - pack the LPT's save table.
+ * @c: UBIFS file-system description object
+ * @buf: buffer into which to pack
+ * @lsave: LPT's save table to pack
+ */
+static void pack_lsave(struct ubifs_info *c, void *buf, int *lsave)
+{
+ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
+ int i, pos = 0;
+ uint16_t crc;
+
+ pack_bits(&addr, &pos, UBIFS_LPT_LSAVE, UBIFS_LPT_TYPE_BITS);
+ for (i = 0; i < c->lsave_cnt; i++)
+ pack_bits(&addr, &pos, lsave[i], c->lnum_bits);
+ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
+ c->lsave_sz - UBIFS_LPT_CRC_BYTES);
+ addr = buf;
+ pos = 0;
+ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
+}
+
+/**
+ * set_ltab - set LPT LEB properties.
+ * @c: UBIFS file-system description object
+ * @lnum: LEB number
+ * @free: amount of free space
+ * @dirty: amount of dirty space
+ */
+static void set_ltab(struct ubifs_info *c, int lnum, int free, int dirty)
+{
+ dbg_msg(3, "LEB %d free %d dirty %d to %d %d",
+ lnum, c->ltab[lnum - c->lpt_first].free,
+ c->ltab[lnum - c->lpt_first].dirty, free, dirty);
+ c->ltab[lnum - c->lpt_first].free = free;
+ c->ltab[lnum - c->lpt_first].dirty = dirty;
+}
+
+/**
+ * calc_nnode_num - calculate nnode number.
+ * @row: the row in the tree (root is zero)
+ * @col: the column in the row (leftmost is zero)
+ *
+ * The nnode number is a number that uniquely identifies a nnode and can be used
+ * easily to traverse the tree from the root to that nnode.
+ *
+ * This function calculates and returns the nnode number for the nnode at @row
+ * and @col.
+ */
+static int calc_nnode_num(int row, int col)
+{
+ int num, bits;
+
+ num = 1;
+ while (row--) {
+ bits = (col & (UBIFS_LPT_FANOUT - 1));
+ col >>= UBIFS_LPT_FANOUT_SHIFT;
+ num <<= UBIFS_LPT_FANOUT_SHIFT;
+ num |= bits;
+ }
+ return num;
+}
+
+/**
+ * create_lpt - create LPT.
+ * @c: UBIFS file-system description object
+ *
+ * This function returns %0 on success and a negative error code on failure.
+ */
+int create_lpt(struct ubifs_info *c)
+{
+ int lnum, err = 0, i, j, cnt, len, alen, row;
+ int blnum, boffs, bsz, bcnt;
+ struct ubifs_pnode *pnode = NULL;
+ struct ubifs_nnode *nnode = NULL;
+ void *buf = NULL, *p;
+ int *lsave = NULL;
+
+ pnode = malloc(sizeof(struct ubifs_pnode));
+ nnode = malloc(sizeof(struct ubifs_nnode));
+ buf = malloc(c->leb_size);
+ lsave = malloc(sizeof(int) * c->lsave_cnt);
+ if (!pnode || !nnode || !buf || !lsave) {
+ err = -ENOMEM;
+ goto out;
+ }
+ memset(pnode, 0 , sizeof(struct ubifs_pnode));
+ memset(nnode, 0 , sizeof(struct ubifs_nnode));
+
+ c->lscan_lnum = c->main_first;
+
+ lnum = c->lpt_first;
+ p = buf;
+ len = 0;
+ /* Number of leaf nodes (pnodes) */
+ cnt = (c->main_lebs + UBIFS_LPT_FANOUT - 1) >> UBIFS_LPT_FANOUT_SHIFT;
+ //printf("pnode_cnt=%d\n",cnt);
+
+ /*
+ * To calculate the internal node branches, we keep information about
+ * the level below.
+ */
+ blnum = lnum; /* LEB number of level below */
+ boffs = 0; /* Offset of level below */
+ bcnt = cnt; /* Number of nodes in level below */
+ bsz = c->pnode_sz; /* Size of nodes in level below */
+
+ /* Add pnodes */
+ for (i = 0; i < cnt; i++) {
+ if (len + c->pnode_sz > c->leb_size) {
+ alen = ALIGN(len, c->min_io_size);
+ set_ltab(c, lnum, c->leb_size - alen, alen - len);
+ memset(p, 0xff, alen - len);
+ err = write_leb(lnum++, alen, buf);
+ if (err)
+ goto out;
+ p = buf;
+ len = 0;
+ }
+ /* Fill in the pnode */
+ for (j = 0; j < UBIFS_LPT_FANOUT; j++) {
+ int k = (i << UBIFS_LPT_FANOUT_SHIFT) + j;
+
+ if (k < c->main_lebs)
+ pnode->lprops[j] = c->lpt[k];
+ else {
+ pnode->lprops[j].free = c->leb_size;
+ pnode->lprops[j].dirty = 0;
+ pnode->lprops[j].flags = 0;
+ }
+ }
+ pack_pnode(c, p, pnode);
+ p += c->pnode_sz;
+ len += c->pnode_sz;
+ /*
+ * pnodes are simply numbered left to right starting at zero,
+ * which means the pnode number can be used easily to traverse
+ * down the tree to the corresponding pnode.
+ */
+ pnode->num += 1;
+ }
+
+ row = c->lpt_hght - 1;
+ /* Add all nnodes, one level at a time */
+ while (1) {
+ /* Number of internal nodes (nnodes) at next level */
+ cnt = (cnt + UBIFS_LPT_FANOUT - 1) / UBIFS_LPT_FANOUT;
+ if (cnt == 0)
+ cnt = 1;
+ for (i = 0; i < cnt; i++) {
+ if (len + c->nnode_sz > c->leb_size) {
+ alen = ALIGN(len, c->min_io_size);
+ set_ltab(c, lnum, c->leb_size - alen,
+ alen - len);
+ memset(p, 0xff, alen - len);
+ err = write_leb(lnum++, alen, buf);
+ if (err)
+ goto out;
+ p = buf;
+ len = 0;
+ }
+ /* The root is on row zero */
+ if (row == 0) {
+ c->lpt_lnum = lnum;
+ c->lpt_offs = len;
+ }
+ /* Set branches to the level below */
+ for (j = 0; j < UBIFS_LPT_FANOUT; j++) {
+ if (bcnt) {
+ if (boffs + bsz > c->leb_size) {
+ blnum += 1;
+ boffs = 0;
+ }
+ nnode->nbranch[j].lnum = blnum;
+ nnode->nbranch[j].offs = boffs;
+ boffs += bsz;
+ bcnt--;
+ } else {
+ nnode->nbranch[j].lnum = 0;
+ nnode->nbranch[j].offs = 0;
+ }
+ }
+ nnode->num = calc_nnode_num(row, i);
+ pack_nnode(c, p, nnode);
+ p += c->nnode_sz;
+ len += c->nnode_sz;
+ }
+ /* Row zero is the top row */
+ if (row == 0)
+ break;
+ /* Update the information about the level below */
+ bcnt = cnt;
+ bsz = c->nnode_sz;
+ row -= 1;
+ }
+
+ if (c->big_lpt) {
+ /* Need to add LPT's save table */
+ if (len + c->lsave_sz > c->leb_size) {
+ alen = ALIGN(len, c->min_io_size);
+ set_ltab(c, lnum, c->leb_size - alen, alen - len);
+ memset(p, 0xff, alen - len);
+ err = write_leb(lnum++, alen, buf);
+ if (err)
+ goto out;
+ p = buf;
+ len = 0;
+ }
+
+ c->lsave_lnum = lnum;
+ c->lsave_offs = len;
+
+ for (i = 0; i < c->lsave_cnt; i++)
+ lsave[i] = c->main_first + i;
+
+ pack_lsave(c, p, lsave);
+ p += c->lsave_sz;
+ len += c->lsave_sz;
+ }
+
+ /* Need to add LPT's own LEB properties table */
+ if (len + c->ltab_sz > c->leb_size) {
+ alen = ALIGN(len, c->min_io_size);
+ set_ltab(c, lnum, c->leb_size - alen, alen - len);
+ memset(p, 0xff, alen - len);
+ err = write_leb(lnum++, alen, buf);
+ if (err)
+ goto out;
+ p = buf;
+ len = 0;
+ }
+
+ c->ltab_lnum = lnum;
+ c->ltab_offs = len;
+
+ /* Update ltab before packing it */
+ len += c->ltab_sz;
+ alen = ALIGN(len, c->min_io_size);
+ set_ltab(c, lnum, c->leb_size - alen, alen - len);
+
+ pack_ltab(c, p, c->ltab);
+ p += c->ltab_sz;
+
+ /* Write remaining buffer */
+ memset(p, 0xff, alen - len);
+ err = write_leb(lnum, alen, buf);
+ if (err)
+ goto out;
+
+ c->nhead_lnum = lnum;
+ c->nhead_offs = ALIGN(len, c->min_io_size);
+
+ dbg_msg(1, "lpt_sz: %lld", c->lpt_sz);
+ dbg_msg(1, "space_bits: %d", c->space_bits);
+ dbg_msg(1, "lpt_lnum_bits: %d", c->lpt_lnum_bits);
+ dbg_msg(1, "lpt_offs_bits: %d", c->lpt_offs_bits);
+ dbg_msg(1, "lpt_spc_bits: %d", c->lpt_spc_bits);
+ dbg_msg(1, "pcnt_bits: %d", c->pcnt_bits);
+ dbg_msg(1, "lnum_bits: %d", c->lnum_bits);
+ dbg_msg(1, "pnode_sz: %d", c->pnode_sz);
+ dbg_msg(1, "nnode_sz: %d", c->nnode_sz);
+ dbg_msg(1, "ltab_sz: %d", c->ltab_sz);
+ dbg_msg(1, "lsave_sz: %d", c->lsave_sz);
+ dbg_msg(1, "lsave_cnt: %d", c->lsave_cnt);
+ dbg_msg(1, "lpt_hght: %d", c->lpt_hght);
+ dbg_msg(1, "big_lpt: %d", c->big_lpt);
+ dbg_msg(1, "LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
+ dbg_msg(1, "LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
+ dbg_msg(1, "LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
+ if (c->big_lpt)
+ dbg_msg(1, "LPT lsave is at %d:%d",
+ c->lsave_lnum, c->lsave_offs);
+out:
+ free(lsave);
+ free(buf);
+ free(nnode);
+ free(pnode);
+ return err;
+}
diff --git a/ubifs-utils/mkfs.ubifs/lpt.h b/ubifs-utils/mkfs.ubifs/lpt.h
new file mode 100644
index 0000000..4cde59d
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/lpt.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation.
+ * Copyright (C) 2008 University of Szeged, Hungary
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy
+ * Adrian Hunter
+ */
+
+#ifndef __UBIFS_LPT_H__
+#define __UBIFS_LPT_H__
+
+int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, int *big_lpt);
+int create_lpt(struct ubifs_info *c);
+
+#endif
diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
new file mode 100644
index 0000000..ca17e2b
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
@@ -0,0 +1,2324 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation.
+ * Copyright (C) 2008 University of Szeged, Hungary
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Adrian Hunter
+ * Artem Bityutskiy
+ * Zoltan Sogor
+ */
+
+#define _XOPEN_SOURCE 500 /* For realpath() */
+
+#include "mkfs.ubifs.h"
+#include <crc32.h>
+#include "common.h"
+
+/* Size (prime number) of hash table for link counting */
+#define HASH_TABLE_SIZE 10099
+
+/* The node buffer must allow for worst case compression */
+#define NODE_BUFFER_SIZE (UBIFS_DATA_NODE_SZ + \
+ UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR)
+
+/* Default time granularity in nanoseconds */
+#define DEFAULT_TIME_GRAN 1000000000
+
+/**
+ * struct idx_entry - index entry.
+ * @next: next index entry (NULL at end of list)
+ * @prev: previous index entry (NULL at beginning of list)
+ * @key: key
+ * @name: directory entry name used for sorting colliding keys by name
+ * @lnum: LEB number
+ * @offs: offset
+ * @len: length
+ *
+ * The index is recorded as a linked list which is sorted and used to create
+ * the bottom level of the on-flash index tree. The remaining levels of the
+ * index tree are each built from the level below.
+ */
+struct idx_entry {
+ struct idx_entry *next;
+ struct idx_entry *prev;
+ union ubifs_key key;
+ char *name;
+ int lnum;
+ int offs;
+ int len;
+};
+
+/**
+ * struct inum_mapping - inode number mapping for link counting.
+ * @next: next inum_mapping (NULL at end of list)
+ * @prev: previous inum_mapping (NULL at beginning of list)
+ * @dev: source device on which the source inode number resides
+ * @inum: source inode number of the file
+ * @use_inum: target inode number of the file
+ * @use_nlink: number of links
+ * @path_name: a path name of the file
+ * @st: struct stat object containing inode attributes which have to be used
+ * when the inode is being created (actually only UID, GID, access
+ * mode, major and minor device numbers)
+ *
+ * If a file has more than one hard link, then the number of hard links that
+ * exist in the source directory hierarchy must be counted to exclude the
+ * possibility that the file is linked from outside the source directory
+ * hierarchy.
+ *
+ * The inum_mappings are stored in a hash_table of linked lists.
+ */
+struct inum_mapping {
+ struct inum_mapping *next;
+ struct inum_mapping *prev;
+ dev_t dev;
+ ino_t inum;
+ ino_t use_inum;
+ unsigned int use_nlink;
+ char *path_name;
+ struct stat st;
+};
+
+/*
+ * Because we copy functions from the kernel, we use a subset of the UBIFS
+ * file-system description object struct ubifs_info.
+ */
+struct ubifs_info info_;
+static struct ubifs_info *c = &info_;
+static libubi_t ubi;
+
+/* Debug levels are: 0 (none), 1 (statistics), 2 (files) ,3 (more details) */
+int debug_level;
+int verbose;
+int yes;
+
+static char *root;
+static int root_len;
+static struct stat root_st;
+static char *output;
+static int out_fd;
+static int out_ubi;
+static int squash_owner;
+
+/* The 'head' (position) which nodes are written */
+static int head_lnum;
+static int head_offs;
+static int head_flags;
+
+/* The index list */
+static struct idx_entry *idx_list_first;
+static struct idx_entry *idx_list_last;
+static size_t idx_cnt;
+
+/* Global buffers */
+static void *leb_buf;
+static void *node_buf;
+static void *block_buf;
+
+/* Hash table for inode link counting */
+static struct inum_mapping **hash_table;
+
+/* Inode creation sequence number */
+static unsigned long long creat_sqnum;
+
+static const char *optstring = "d:r:m:o:D:yh?vVe:c:g:f:Fp:k:x:X:j:R:l:j:UQq";
+
+static const struct option longopts[] = {
+ {"root", 1, NULL, 'r'},
+ {"min-io-size", 1, NULL, 'm'},
+ {"leb-size", 1, NULL, 'e'},
+ {"max-leb-cnt", 1, NULL, 'c'},
+ {"output", 1, NULL, 'o'},
+ {"devtable", 1, NULL, 'D'},
+ {"yes", 0, NULL, 'y'},
+ {"help", 0, NULL, 'h'},
+ {"verbose", 0, NULL, 'v'},
+ {"version", 0, NULL, 'V'},
+ {"debug-level", 1, NULL, 'g'},
+ {"jrn-size", 1, NULL, 'j'},
+ {"reserved", 1, NULL, 'R'},
+ {"compr", 1, NULL, 'x'},
+ {"favor-percent", 1, NULL, 'X'},
+ {"fanout", 1, NULL, 'f'},
+ {"space-fixup", 0, NULL, 'F'},
+ {"keyhash", 1, NULL, 'k'},
+ {"log-lebs", 1, NULL, 'l'},
+ {"orph-lebs", 1, NULL, 'p'},
+ {"squash-uids" , 0, NULL, 'U'},
+ {NULL, 0, NULL, 0}
+};
+
+static const char *helptext =
+"Usage: mkfs.ubifs [OPTIONS] target\n"
+"Make a UBIFS file system image from an existing directory tree\n\n"
+"Examples:\n"
+"Build file system from directory /opt/img, writting the result in the ubifs.img file\n"
+"\tmkfs.ubifs -m 512 -e 128KiB -c 100 -r /opt/img ubifs.img\n"
+"The same, but writting directly to an UBI volume\n"
+"\tmkfs.ubifs -r /opt/img /dev/ubi0_0\n"
+"Creating an empty UBIFS filesystem on an UBI volume\n"
+"\tmkfs.ubifs /dev/ubi0_0\n\n"
+"Options:\n"
+"-r, -d, --root=DIR build file system from directory DIR\n"
+"-m, --min-io-size=SIZE minimum I/O unit size\n"
+"-e, --leb-size=SIZE logical erase block size\n"
+"-c, --max-leb-cnt=COUNT maximum logical erase block count\n"
+"-o, --output=FILE output to FILE\n"
+"-j, --jrn-size=SIZE journal size\n"
+"-R, --reserved=SIZE how much space should be reserved for the super-user\n"
+"-x, --compr=TYPE compression type - \"lzo\", \"favor_lzo\", \"zlib\" or\n"
+" \"none\" (default: \"lzo\")\n"
+"-X, --favor-percent may only be used with favor LZO compression and defines\n"
+" how many percent better zlib should compress to make\n"
+" mkfs.ubifs use zlib instead of LZO (default 20%)\n"
+"-f, --fanout=NUM fanout NUM (default: 8)\n"
+"-F, --space-fixup file-system free space has to be fixed up on first mount\n"
+" (requires kernel version 3.0 or greater)\n"
+"-k, --keyhash=TYPE key hash type - \"r5\" or \"test\" (default: \"r5\")\n"
+"-p, --orph-lebs=COUNT count of erase blocks for orphans (default: 1)\n"
+"-D, --devtable=FILE use device table FILE\n"
+"-U, --squash-uids squash owners making all files owned by root\n"
+"-l, --log-lebs=COUNT count of erase blocks for the log (used only for\n"
+" debugging)\n"
+"-y, --yes assume the answer is \"yes\" for all questions\n"
+"-v, --verbose verbose operation\n"
+"-V, --version display version information\n"
+"-g, --debug=LEVEL display debug information (0 - none, 1 - statistics,\n"
+" 2 - files, 3 - more details)\n"
+"-h, --help display this help text\n\n"
+"Note, SIZE is specified in bytes, but it may also be specified in Kilobytes,\n"
+"Megabytes, and Gigabytes if a KiB, MiB, or GiB suffix is used.\n\n"
+"If you specify \"lzo\" or \"zlib\" compressors, mkfs.ubifs will use this compressor\n"
+"for all data. The \"none\" disables any data compression. The \"favor_lzo\" is not\n"
+"really a separate compressor. It is just a method of combining \"lzo\" and \"zlib\"\n"
+"compressors. Namely, mkfs.ubifs tries to compress data with both \"lzo\" and \"zlib\"\n"
+"compressors, then it compares which compressor is better. If \"zlib\" compresses 20\n"
+"or more percent better than \"lzo\", mkfs.ubifs chooses \"lzo\", otherwise it chooses\n"
+"\"zlib\". The \"--favor-percent\" may specify arbitrary threshold instead of the\n"
+"default 20%.\n\n"
+"The -F parameter is used to set the \"fix up free space\" flag in the superblock,\n"
+"which forces UBIFS to \"fixup\" all the free space which it is going to use. This\n"
+"option is useful to work-around the problem of double free space programming: if the\n"
+"flasher program which flashes the UBI image is unable to skip NAND pages containing\n"
+"only 0xFF bytes, the effect is that some NAND pages are written to twice - first time\n"
+"when flashing the image and the second time when UBIFS is mounted and writes useful\n"
+"data there. A proper UBI-aware flasher should skip such NAND pages, though. Note, this\n"
+"flag may make the first mount very slow, because the \"free space fixup\" procedure\n"
+"takes time. This feature is supported by the Linux kernel starting from version 3.0.\n";
+
+/**
+ * make_path - make a path name from a directory and a name.
+ * @dir: directory path name
+ * @name: name
+ */
+static char *make_path(const char *dir, const char *name)
+{
+ char *s;
+
+ s = malloc(strlen(dir) + strlen(name) + 2);
+ if (!s)
+ return NULL;
+ strcpy(s, dir);
+ if (dir[strlen(dir) - 1] != '/')
+ strcat(s, "/");
+ strcat(s, name);
+ return s;
+}
+
+/**
+ * is_contained - determine if a file is beneath a directory.
+ * @file: file path name
+ * @dir: directory path name
+ *
+ * This function returns %1 if @file is accessible from the @dir directory and
+ * %0 otherwise. In case of error, returns %-1.
+ */
+static int is_contained(const char *file, const char *dir)
+{
+ char *real_file = NULL;
+ char *real_dir = NULL;
+ char *file_base, *copy;
+ int ret = -1;
+
+ /* Make a copy of the file path because 'dirname()' can modify it */
+ copy = strdup(file);
+ if (!copy)
+ return -1;
+ file_base = dirname(copy);
+
+ /* Turn the paths into the canonical form */
+ real_file = malloc(PATH_MAX);
+ if (!real_file)
+ goto out_free;
+
+ real_dir = malloc(PATH_MAX);
+ if (!real_dir)
+ goto out_free;
+
+ if (!realpath(file_base, real_file)) {
+ perror("Could not canonicalize file path");
+ goto out_free;
+ }
+ if (!realpath(dir, real_dir)) {
+ perror("Could not canonicalize directory");
+ goto out_free;
+ }
+
+ ret = !!strstr(real_file, real_dir);
+
+out_free:
+ free(copy);
+ free(real_file);
+ free(real_dir);
+ return ret;
+}
+
+/**
+ * calc_min_log_lebs - calculate the minimum number of log LEBs needed.
+ * @max_bud_bytes: journal size (buds only)
+ */
+static int calc_min_log_lebs(unsigned long long max_bud_bytes)
+{
+ int buds, log_lebs;
+ unsigned long long log_size;
+
+ buds = (max_bud_bytes + c->leb_size - 1) / c->leb_size;
+ log_size = ALIGN(UBIFS_REF_NODE_SZ, c->min_io_size);
+ log_size *= buds;
+ log_size += ALIGN(UBIFS_CS_NODE_SZ +
+ UBIFS_REF_NODE_SZ * (c->jhead_cnt + 2),
+ c->min_io_size);
+ log_lebs = (log_size + c->leb_size - 1) / c->leb_size;
+ log_lebs += 1;
+ return log_lebs;
+}
+
+/**
+ * add_space_overhead - add UBIFS overhead.
+ * @size: flash space which should be visible to the user
+ *
+ * UBIFS has overhead, and if we need to reserve @size bytes for the user data,
+ * we have to reserve more flash space, to compensate the overhead. This
+ * function calculates and returns the amount of physical flash space which
+ * should be reserved to provide @size bytes for the user.
+ */
+static long long add_space_overhead(long long size)
+{
+ int divisor, factor, f, max_idx_node_sz;
+
+ /*
+ * Do the opposite to what the 'ubifs_reported_space()' kernel UBIFS
+ * function does.
+ */
+ max_idx_node_sz = ubifs_idx_node_sz(c, c->fanout);
+ f = c->fanout > 3 ? c->fanout >> 1 : 2;
+ divisor = UBIFS_BLOCK_SIZE;
+ factor = UBIFS_MAX_DATA_NODE_SZ;
+ factor += (max_idx_node_sz * 3) / (f - 1);
+ size *= factor;
+ return size / divisor;
+}
+
+static int validate_options(void)
+{
+ int tmp;
+
+ if (!output)
+ return err_msg("no output file or UBI volume specified");
+ if (root) {
+ tmp = is_contained(output, root);
+ if (tmp < 0)
+ return err_msg("failed to perform output file root check");
+ else if (tmp)
+ return err_msg("output file cannot be in the UBIFS root "
+ "directory");
+ }
+ if (!is_power_of_2(c->min_io_size))
+ return err_msg("min. I/O unit size should be power of 2");
+ if (c->leb_size < c->min_io_size)
+ return err_msg("min. I/O unit cannot be larger than LEB size");
+ if (c->leb_size < UBIFS_MIN_LEB_SZ)
+ return err_msg("too small LEB size %d, minimum is %d",
+ c->leb_size, UBIFS_MIN_LEB_SZ);
+ if (c->leb_size % c->min_io_size)
+ return err_msg("LEB should be multiple of min. I/O units");
+ if (c->leb_size % 8)
+ return err_msg("LEB size has to be multiple of 8");
+ if (c->leb_size > UBIFS_MAX_LEB_SZ)
+ return err_msg("too large LEB size %d, maximum is %d",
+ c->leb_size, UBIFS_MAX_LEB_SZ);
+ if (c->max_leb_cnt < UBIFS_MIN_LEB_CNT)
+ return err_msg("too low max. count of LEBs, minimum is %d",
+ UBIFS_MIN_LEB_CNT);
+ if (c->fanout < UBIFS_MIN_FANOUT)
+ return err_msg("too low fanout, minimum is %d",
+ UBIFS_MIN_FANOUT);
+ tmp = c->leb_size - UBIFS_IDX_NODE_SZ;
+ tmp /= UBIFS_BRANCH_SZ + UBIFS_MAX_KEY_LEN;
+ if (c->fanout > tmp)
+ return err_msg("too high fanout, maximum is %d", tmp);
+ if (c->log_lebs < UBIFS_MIN_LOG_LEBS)
+ return err_msg("too few log LEBs, minimum is %d",
+ UBIFS_MIN_LOG_LEBS);
+ if (c->log_lebs >= c->max_leb_cnt - UBIFS_MIN_LEB_CNT)
+ return err_msg("too many log LEBs, maximum is %d",
+ c->max_leb_cnt - UBIFS_MIN_LEB_CNT);
+ if (c->orph_lebs < UBIFS_MIN_ORPH_LEBS)
+ return err_msg("too few orphan LEBs, minimum is %d",
+ UBIFS_MIN_ORPH_LEBS);
+ if (c->orph_lebs >= c->max_leb_cnt - UBIFS_MIN_LEB_CNT)
+ return err_msg("too many orphan LEBs, maximum is %d",
+ c->max_leb_cnt - UBIFS_MIN_LEB_CNT);
+ tmp = UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs + c->lpt_lebs;
+ tmp += c->orph_lebs + 4;
+ if (tmp > c->max_leb_cnt)
+ return err_msg("too low max. count of LEBs, expected at "
+ "least %d", tmp);
+ tmp = calc_min_log_lebs(c->max_bud_bytes);
+ if (c->log_lebs < calc_min_log_lebs(c->max_bud_bytes))
+ return err_msg("too few log LEBs, expected at least %d", tmp);
+ if (c->rp_size >= ((long long)c->leb_size * c->max_leb_cnt) / 2)
+ return err_msg("too much reserved space %lld", c->rp_size);
+ return 0;
+}
+
+/**
+ * get_multiplier - convert size specifier to an integer multiplier.
+ * @str: the size specifier string
+ *
+ * This function parses the @str size specifier, which may be one of
+ * 'KiB', 'MiB', or 'GiB' into an integer multiplier. Returns positive
+ * size multiplier in case of success and %-1 in case of failure.
+ */
+static int get_multiplier(const char *str)
+{
+ if (!str)
+ return 1;
+
+ /* Remove spaces before the specifier */
+ while (*str == ' ' || *str == '\t')
+ str += 1;
+
+ if (!strcmp(str, "KiB"))
+ return 1024;
+ if (!strcmp(str, "MiB"))
+ return 1024 * 1024;
+ if (!strcmp(str, "GiB"))
+ return 1024 * 1024 * 1024;
+
+ return -1;
+}
+
+/**
+ * get_bytes - convert a string containing amount of bytes into an
+ * integer.
+ * @str: string to convert
+ *
+ * This function parses @str which may have one of 'KiB', 'MiB', or 'GiB' size
+ * specifiers. Returns positive amount of bytes in case of success and %-1 in
+ * case of failure.
+ */
+static long long get_bytes(const char *str)
+{
+ char *endp;
+ long long bytes = strtoull(str, &endp, 0);
+
+ if (endp == str || bytes < 0)
+ return err_msg("incorrect amount of bytes: \"%s\"", str);
+
+ if (*endp != '\0') {
+ int mult = get_multiplier(endp);
+
+ if (mult == -1)
+ return err_msg("bad size specifier: \"%s\" - "
+ "should be 'KiB', 'MiB' or 'GiB'", endp);
+ bytes *= mult;
+ }
+
+ return bytes;
+}
+/**
+ * open_ubi - open the UBI volume.
+ * @node: name of the UBI volume character device to fetch information about
+ *
+ * Returns %0 in case of success and %-1 in case of failure
+ */
+static int open_ubi(const char *node)
+{
+ struct stat st;
+
+ if (stat(node, &st) || !S_ISCHR(st.st_mode))
+ return -1;
+
+ ubi = libubi_open();
+ if (!ubi)
+ return -1;
+ if (ubi_get_vol_info(ubi, node, &c->vi))
+ return -1;
+ if (ubi_get_dev_info1(ubi, c->vi.dev_num, &c->di))
+ return -1;
+ return 0;
+}
+
+static int get_options(int argc, char**argv)
+{
+ int opt, i;
+ const char *tbl_file = NULL;
+ struct stat st;
+ char *endp;
+
+ c->fanout = 8;
+ c->orph_lebs = 1;
+ c->key_hash = key_r5_hash;
+ c->key_len = UBIFS_SK_LEN;
+ c->default_compr = UBIFS_COMPR_LZO;
+ c->favor_percent = 20;
+ c->lsave_cnt = 256;
+ c->leb_size = -1;
+ c->min_io_size = -1;
+ c->max_leb_cnt = -1;
+ c->max_bud_bytes = -1;
+ c->log_lebs = -1;
+
+ while (1) {
+ opt = getopt_long(argc, argv, optstring, longopts, &i);
+ if (opt == -1)
+ break;
+ switch (opt) {
+ case 'r':
+ case 'd':
+ root_len = strlen(optarg);
+ root = malloc(root_len + 2);
+ if (!root)
+ return err_msg("cannot allocate memory");
+
+ /*
+ * The further code expects '/' at the end of the root
+ * UBIFS directory on the host.
+ */
+ memcpy(root, optarg, root_len);
+ if (root[root_len - 1] != '/')
+ root[root_len++] = '/';
+ root[root_len] = 0;
+
+ /* Make sure the root directory exists */
+ if (stat(root, &st))
+ return sys_err_msg("bad root directory '%s'",
+ root);
+ break;
+ case 'm':
+ c->min_io_size = get_bytes(optarg);
+ if (c->min_io_size <= 0)
+ return err_msg("bad min. I/O size");
+ break;
+ case 'e':
+ c->leb_size = get_bytes(optarg);
+ if (c->leb_size <= 0)
+ return err_msg("bad LEB size");
+ break;
+ case 'c':
+ c->max_leb_cnt = get_bytes(optarg);
+ if (c->max_leb_cnt <= 0)
+ return err_msg("bad maximum LEB count");
+ break;
+ case 'o':
+ output = xstrdup(optarg);
+ break;
+ case 'D':
+ tbl_file = optarg;
+ if (stat(tbl_file, &st) < 0)
+ return sys_err_msg("bad device table file '%s'",
+ tbl_file);
+ break;
+ case 'y':
+ yes = 1;
+ break;
+ case 'h':
+ case '?':
+ printf("%s", helptext);
+ exit(0);
+ case 'v':
+ verbose = 1;
+ break;
+ case 'V':
+ common_print_version();
+ exit(0);
+ case 'g':
+ debug_level = strtol(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg ||
+ debug_level < 0 || debug_level > 3)
+ return err_msg("bad debugging level '%s'",
+ optarg);
+ break;
+ case 'f':
+ c->fanout = strtol(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg || c->fanout <= 0)
+ return err_msg("bad fanout %s", optarg);
+ break;
+ case 'F':
+ c->space_fixup = 1;
+ break;
+ case 'l':
+ c->log_lebs = strtol(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg || c->log_lebs <= 0)
+ return err_msg("bad count of log LEBs '%s'",
+ optarg);
+ break;
+ case 'p':
+ c->orph_lebs = strtol(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg ||
+ c->orph_lebs <= 0)
+ return err_msg("bad orphan LEB count '%s'",
+ optarg);
+ break;
+ case 'k':
+ if (strcmp(optarg, "r5") == 0) {
+ c->key_hash = key_r5_hash;
+ c->key_hash_type = UBIFS_KEY_HASH_R5;
+ } else if (strcmp(optarg, "test") == 0) {
+ c->key_hash = key_test_hash;
+ c->key_hash_type = UBIFS_KEY_HASH_TEST;
+ } else
+ return err_msg("bad key hash");
+ break;
+ case 'x':
+ if (strcmp(optarg, "favor_lzo") == 0)
+ c->favor_lzo = 1;
+ else if (strcmp(optarg, "zlib") == 0)
+ c->default_compr = UBIFS_COMPR_ZLIB;
+ else if (strcmp(optarg, "none") == 0)
+ c->default_compr = UBIFS_COMPR_NONE;
+ else if (strcmp(optarg, "lzo") != 0)
+ return err_msg("bad compressor name");
+ break;
+ case 'X':
+ c->favor_percent = strtol(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg ||
+ c->favor_percent <= 0 || c->favor_percent >= 100)
+ return err_msg("bad favor LZO percent '%s'",
+ optarg);
+ break;
+ case 'j':
+ c->max_bud_bytes = get_bytes(optarg);
+ if (c->max_bud_bytes <= 0)
+ return err_msg("bad maximum amount of buds");
+ break;
+ case 'R':
+ c->rp_size = get_bytes(optarg);
+ if (c->rp_size < 0)
+ return err_msg("bad reserved bytes count");
+ break;
+ case 'U':
+ squash_owner = 1;
+ break;
+ }
+ }
+
+ if (optind != argc && !output)
+ output = xstrdup(argv[optind]);
+
+ if (!output)
+ return err_msg("not output device or file specified");
+
+ out_ubi = !open_ubi(output);
+
+ if (out_ubi) {
+ c->min_io_size = c->di.min_io_size;
+ c->leb_size = c->vi.leb_size;
+ if (c->max_leb_cnt == -1)
+ c->max_leb_cnt = c->vi.rsvd_lebs;
+ }
+
+ if (c->min_io_size == -1)
+ return err_msg("min. I/O unit was not specified "
+ "(use -h for help)");
+
+ if (c->leb_size == -1)
+ return err_msg("LEB size was not specified (use -h for help)");
+
+ if (c->max_leb_cnt == -1)
+ return err_msg("Maximum count of LEBs was not specified "
+ "(use -h for help)");
+
+ if (c->max_bud_bytes == -1) {
+ int lebs;
+
+ lebs = c->max_leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS;
+ lebs -= c->orph_lebs;
+ if (c->log_lebs != -1)
+ lebs -= c->log_lebs;
+ else
+ lebs -= UBIFS_MIN_LOG_LEBS;
+ /*
+ * We do not know lprops geometry so far, so assume minimum
+ * count of lprops LEBs.
+ */
+ lebs -= UBIFS_MIN_LPT_LEBS;
+ /* Make the journal about 12.5% of main area lebs */
+ c->max_bud_bytes = (lebs / 8) * (long long)c->leb_size;
+ /* Make the max journal size 8MiB */
+ if (c->max_bud_bytes > 8 * 1024 * 1024)
+ c->max_bud_bytes = 8 * 1024 * 1024;
+ if (c->max_bud_bytes < 4 * c->leb_size)
+ c->max_bud_bytes = 4 * c->leb_size;
+ }
+
+ if (c->log_lebs == -1) {
+ c->log_lebs = calc_min_log_lebs(c->max_bud_bytes);
+ c->log_lebs += 2;
+ }
+
+ if (c->min_io_size < 8)
+ c->min_io_size = 8;
+ c->rp_size = add_space_overhead(c->rp_size);
+
+ if (verbose) {
+ printf("mkfs.ubifs\n");
+ printf("\troot: %s\n", root);
+ printf("\tmin_io_size: %d\n", c->min_io_size);
+ printf("\tleb_size: %d\n", c->leb_size);
+ printf("\tmax_leb_cnt: %d\n", c->max_leb_cnt);
+ printf("\toutput: %s\n", output);
+ printf("\tjrn_size: %llu\n", c->max_bud_bytes);
+ printf("\treserved: %llu\n", c->rp_size);
+ switch (c->default_compr) {
+ case UBIFS_COMPR_LZO:
+ printf("\tcompr: lzo\n");
+ break;
+ case UBIFS_COMPR_ZLIB:
+ printf("\tcompr: zlib\n");
+ break;
+ case UBIFS_COMPR_NONE:
+ printf("\tcompr: none\n");
+ break;
+ }
+ printf("\tkeyhash: %s\n", (c->key_hash == key_r5_hash) ?
+ "r5" : "test");
+ printf("\tfanout: %d\n", c->fanout);
+ printf("\torph_lebs: %d\n", c->orph_lebs);
+ printf("\tspace_fixup: %d\n", c->space_fixup);
+ }
+
+ if (validate_options())
+ return -1;
+
+ if (tbl_file && parse_devtable(tbl_file))
+ return err_msg("cannot parse device table file '%s'", tbl_file);
+
+ return 0;
+}
+
+/**
+ * prepare_node - fill in the common header.
+ * @node: node
+ * @len: node length
+ */
+static void prepare_node(void *node, int len)
+{
+ uint32_t crc;
+ struct ubifs_ch *ch = node;
+
+ ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
+ ch->len = cpu_to_le32(len);
+ ch->group_type = UBIFS_NO_NODE_GROUP;
+ ch->sqnum = cpu_to_le64(++c->max_sqnum);
+ ch->padding[0] = ch->padding[1] = 0;
+ crc = mtd_crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
+ ch->crc = cpu_to_le32(crc);
+}
+
+/**
+ * write_leb - copy the image of a LEB to the output target.
+ * @lnum: LEB number
+ * @len: length of data in the buffer
+ * @buf: buffer (must be at least c->leb_size bytes)
+ */
+int write_leb(int lnum, int len, void *buf)
+{
+ off_t pos = (off_t)lnum * c->leb_size;
+
+ dbg_msg(3, "LEB %d len %d", lnum, len);
+ memset(buf + len, 0xff, c->leb_size - len);
+ if (out_ubi)
+ if (ubi_leb_change_start(ubi, out_fd, lnum, c->leb_size))
+ return sys_err_msg("ubi_leb_change_start failed");
+
+ if (lseek(out_fd, pos, SEEK_SET) != pos)
+ return sys_err_msg("lseek failed seeking %"PRIdoff_t, pos);
+
+ if (write(out_fd, buf, c->leb_size) != c->leb_size)
+ return sys_err_msg("write failed writing %d bytes at pos %"PRIdoff_t,
+ c->leb_size, pos);
+
+ return 0;
+}
+
+/**
+ * write_empty_leb - copy the image of an empty LEB to the output target.
+ * @lnum: LEB number
+ */
+static int write_empty_leb(int lnum)
+{
+ return write_leb(lnum, 0, leb_buf);
+}
+
+/**
+ * do_pad - pad a buffer to the minimum I/O size.
+ * @buf: buffer
+ * @len: buffer length
+ */
+static int do_pad(void *buf, int len)
+{
+ int pad_len, alen = ALIGN(len, 8), wlen = ALIGN(alen, c->min_io_size);
+ uint32_t crc;
+
+ memset(buf + len, 0xff, alen - len);
+ pad_len = wlen - alen;
+ dbg_msg(3, "len %d pad_len %d", len, pad_len);
+ buf += alen;
+ if (pad_len >= (int)UBIFS_PAD_NODE_SZ) {
+ struct ubifs_ch *ch = buf;
+ struct ubifs_pad_node *pad_node = buf;
+
+ ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
+ ch->node_type = UBIFS_PAD_NODE;
+ ch->group_type = UBIFS_NO_NODE_GROUP;
+ ch->padding[0] = ch->padding[1] = 0;
+ ch->sqnum = cpu_to_le64(0);
+ ch->len = cpu_to_le32(UBIFS_PAD_NODE_SZ);
+
+ pad_len -= UBIFS_PAD_NODE_SZ;
+ pad_node->pad_len = cpu_to_le32(pad_len);
+
+ crc = mtd_crc32(UBIFS_CRC32_INIT, buf + 8,
+ UBIFS_PAD_NODE_SZ - 8);
+ ch->crc = cpu_to_le32(crc);
+
+ memset(buf + UBIFS_PAD_NODE_SZ, 0, pad_len);
+ } else if (pad_len > 0)
+ memset(buf, UBIFS_PADDING_BYTE, pad_len);
+
+ return wlen;
+}
+
+/**
+ * write_node - write a node to a LEB.
+ * @node: node
+ * @len: node length
+ * @lnum: LEB number
+ */
+static int write_node(void *node, int len, int lnum)
+{
+ prepare_node(node, len);
+
+ memcpy(leb_buf, node, len);
+
+ len = do_pad(leb_buf, len);
+
+ return write_leb(lnum, len, leb_buf);
+}
+
+/**
+ * calc_dark - calculate LEB dark space size.
+ * @c: the UBIFS file-system description object
+ * @spc: amount of free and dirty space in the LEB
+ *
+ * This function calculates amount of dark space in an LEB which has @spc bytes
+ * of free and dirty space. Returns the calculations result.
+ *
+ * Dark space is the space which is not always usable - it depends on which
+ * nodes are written in which order. E.g., if an LEB has only 512 free bytes,
+ * it is dark space, because it cannot fit a large data node. So UBIFS cannot
+ * count on this LEB and treat these 512 bytes as usable because it is not true
+ * if, for example, only big chunks of uncompressible data will be written to
+ * the FS.
+ */
+static int calc_dark(struct ubifs_info *c, int spc)
+{
+ if (spc < c->dark_wm)
+ return spc;
+
+ /*
+ * If we have slightly more space then the dark space watermark, we can
+ * anyway safely assume it we'll be able to write a node of the
+ * smallest size there.
+ */
+ if (spc - c->dark_wm < (int)MIN_WRITE_SZ)
+ return spc - MIN_WRITE_SZ;
+
+ return c->dark_wm;
+}
+
+/**
+ * set_lprops - set the LEB property values for a LEB.
+ * @lnum: LEB number
+ * @offs: end offset of data in the LEB
+ * @flags: LEB property flags
+ */
+static void set_lprops(int lnum, int offs, int flags)
+{
+ int i = lnum - c->main_first, free, dirty;
+ int a = max_t(int, c->min_io_size, 8);
+
+ free = c->leb_size - ALIGN(offs, a);
+ dirty = c->leb_size - free - ALIGN(offs, 8);
+ dbg_msg(3, "LEB %d free %d dirty %d flags %d", lnum, free, dirty,
+ flags);
+ if (i < c->main_lebs) {
+ c->lpt[i].free = free;
+ c->lpt[i].dirty = dirty;
+ c->lpt[i].flags = flags;
+ }
+ c->lst.total_free += free;
+ c->lst.total_dirty += dirty;
+ if (flags & LPROPS_INDEX)
+ c->lst.idx_lebs += 1;
+ else {
+ int spc;
+
+ spc = free + dirty;
+ if (spc < c->dead_wm)
+ c->lst.total_dead += spc;
+ else
+ c->lst.total_dark += calc_dark(c, spc);
+ c->lst.total_used += c->leb_size - spc;
+ }
+}
+
+/**
+ * add_to_index - add a node key and position to the index.
+ * @key: node key
+ * @lnum: node LEB number
+ * @offs: node offset
+ * @len: node length
+ */
+static int add_to_index(union ubifs_key *key, char *name, int lnum, int offs,
+ int len)
+{
+ struct idx_entry *e;
+
+ dbg_msg(3, "LEB %d offs %d len %d", lnum, offs, len);
+ e = malloc(sizeof(struct idx_entry));
+ if (!e)
+ return err_msg("out of memory");
+ e->next = NULL;
+ e->prev = idx_list_last;
+ e->key = *key;
+ e->name = name;
+ e->lnum = lnum;
+ e->offs = offs;
+ e->len = len;
+ if (!idx_list_first)
+ idx_list_first = e;
+ if (idx_list_last)
+ idx_list_last->next = e;
+ idx_list_last = e;
+ idx_cnt += 1;
+ return 0;
+}
+
+/**
+ * flush_nodes - write the current head and move the head to the next LEB.
+ */
+static int flush_nodes(void)
+{
+ int len, err;
+
+ if (!head_offs)
+ return 0;
+ len = do_pad(leb_buf, head_offs);
+ err = write_leb(head_lnum, len, leb_buf);
+ if (err)
+ return err;
+ set_lprops(head_lnum, head_offs, head_flags);
+ head_lnum += 1;
+ head_offs = 0;
+ return 0;
+}
+
+/**
+ * reserve_space - reserve space for a node on the head.
+ * @len: node length
+ * @lnum: LEB number is returned here
+ * @offs: offset is returned here
+ */
+static int reserve_space(int len, int *lnum, int *offs)
+{
+ int err;
+
+ if (len > c->leb_size - head_offs) {
+ err = flush_nodes();
+ if (err)
+ return err;
+ }
+ *lnum = head_lnum;
+ *offs = head_offs;
+ head_offs += ALIGN(len, 8);
+ return 0;
+}
+
+/**
+ * add_node - write a node to the head.
+ * @key: node key
+ * @node: node
+ * @len: node length
+ */
+static int add_node(union ubifs_key *key, char *name, void *node, int len)
+{
+ int err, lnum, offs;
+
+ prepare_node(node, len);
+
+ err = reserve_space(len, &lnum, &offs);
+ if (err)
+ return err;
+
+ memcpy(leb_buf + offs, node, len);
+ memset(leb_buf + offs + len, 0xff, ALIGN(len, 8) - len);
+
+ add_to_index(key, name, lnum, offs, len);
+
+ return 0;
+}
+
+/**
+ * add_inode_with_data - write an inode.
+ * @st: stat information of source inode
+ * @inum: target inode number
+ * @data: inode data (for special inodes e.g. symlink path etc)
+ * @data_len: inode data length
+ * @flags: source inode flags
+ */
+static int add_inode_with_data(struct stat *st, ino_t inum, void *data,
+ unsigned int data_len, int flags)
+{
+ struct ubifs_ino_node *ino = node_buf;
+ union ubifs_key key;
+ int len, use_flags = 0;
+
+ if (c->default_compr != UBIFS_COMPR_NONE)
+ use_flags |= UBIFS_COMPR_FL;
+ if (flags & FS_COMPR_FL)
+ use_flags |= UBIFS_COMPR_FL;
+ if (flags & FS_SYNC_FL)
+ use_flags |= UBIFS_SYNC_FL;
+ if (flags & FS_IMMUTABLE_FL)
+ use_flags |= UBIFS_IMMUTABLE_FL;
+ if (flags & FS_APPEND_FL)
+ use_flags |= UBIFS_APPEND_FL;
+ if (flags & FS_DIRSYNC_FL && S_ISDIR(st->st_mode))
+ use_flags |= UBIFS_DIRSYNC_FL;
+
+ memset(ino, 0, UBIFS_INO_NODE_SZ);
+
+ ino_key_init(&key, inum);
+ ino->ch.node_type = UBIFS_INO_NODE;
+ key_write(&key, &ino->key);
+ ino->creat_sqnum = cpu_to_le64(creat_sqnum);
+ ino->size = cpu_to_le64(st->st_size);
+ ino->nlink = cpu_to_le32(st->st_nlink);
+ /*
+ * The time fields are updated assuming the default time granularity
+ * of 1 second. To support finer granularities, utime() would be needed.
+ */
+ ino->atime_sec = cpu_to_le64(st->st_atime);
+ ino->ctime_sec = cpu_to_le64(st->st_ctime);
+ ino->mtime_sec = cpu_to_le64(st->st_mtime);
+ ino->atime_nsec = 0;
+ ino->ctime_nsec = 0;
+ ino->mtime_nsec = 0;
+ ino->uid = cpu_to_le32(st->st_uid);
+ ino->gid = cpu_to_le32(st->st_gid);
+ ino->mode = cpu_to_le32(st->st_mode);
+ ino->flags = cpu_to_le32(use_flags);
+ ino->data_len = cpu_to_le32(data_len);
+ ino->compr_type = cpu_to_le16(c->default_compr);
+ if (data_len)
+ memcpy(&ino->data, data, data_len);
+
+ len = UBIFS_INO_NODE_SZ + data_len;
+
+ return add_node(&key, NULL, ino, len);
+}
+
+/**
+ * add_inode - write an inode.
+ * @st: stat information of source inode
+ * @inum: target inode number
+ * @flags: source inode flags
+ */
+static int add_inode(struct stat *st, ino_t inum, int flags)
+{
+ return add_inode_with_data(st, inum, NULL, 0, flags);
+}
+
+/**
+ * add_dir_inode - write an inode for a directory.
+ * @dir: source directory
+ * @inum: target inode number
+ * @size: target directory size
+ * @nlink: target directory link count
+ * @st: struct stat object describing attributes (except size and nlink) of the
+ * target inode to create
+ *
+ * Note, this function may be called with %NULL @dir, when the directory which
+ * is being created does not exist at the host file system, but is defined by
+ * the device table.
+ */
+static int add_dir_inode(DIR *dir, ino_t inum, loff_t size, unsigned int nlink,
+ struct stat *st)
+{
+ int fd, flags = 0;
+
+ st->st_size = size;
+ st->st_nlink = nlink;
+
+ if (dir) {
+ fd = dirfd(dir);
+ if (fd == -1)
+ return sys_err_msg("dirfd failed");
+ if (ioctl(fd, FS_IOC_GETFLAGS, &flags) == -1)
+ flags = 0;
+ }
+
+ return add_inode(st, inum, flags);
+}
+
+/**
+ * add_dev_inode - write an inode for a character or block device.
+ * @st: stat information of source inode
+ * @inum: target inode number
+ * @flags: source inode flags
+ */
+static int add_dev_inode(struct stat *st, ino_t inum, int flags)
+{
+ union ubifs_dev_desc dev;
+
+ dev.huge = cpu_to_le64(makedev(major(st->st_rdev), minor(st->st_rdev)));
+ return add_inode_with_data(st, inum, &dev, 8, flags);
+}
+
+/**
+ * add_symlink_inode - write an inode for a symbolic link.
+ * @path_name: path name of symbolic link inode itself (not the link target)
+ * @st: stat information of source inode
+ * @inum: target inode number
+ * @flags: source inode flags
+ */
+static int add_symlink_inode(const char *path_name, struct stat *st, ino_t inum,
+ int flags)
+{
+ char buf[UBIFS_MAX_INO_DATA + 2];
+ ssize_t len;
+
+ /* Take the symlink as is */
+ len = readlink(path_name, buf, UBIFS_MAX_INO_DATA + 1);
+ if (len <= 0)
+ return sys_err_msg("readlink failed for %s", path_name);
+ if (len > UBIFS_MAX_INO_DATA)
+ return err_msg("symlink too long for %s", path_name);
+
+ return add_inode_with_data(st, inum, buf, len, flags);
+}
+
+/**
+ * add_dent_node - write a directory entry node.
+ * @dir_inum: target inode number of directory
+ * @name: directory entry name
+ * @inum: target inode number of the directory entry
+ * @type: type of the target inode
+ */
+static int add_dent_node(ino_t dir_inum, const char *name, ino_t inum,
+ unsigned char type)
+{
+ struct ubifs_dent_node *dent = node_buf;
+ union ubifs_key key;
+ struct qstr dname;
+ char *kname;
+ int len;
+
+ dbg_msg(3, "%s ino %lu type %u dir ino %lu", name, (unsigned long)inum,
+ (unsigned int)type, (unsigned long)dir_inum);
+ memset(dent, 0, UBIFS_DENT_NODE_SZ);
+
+ dname.name = (void *)name;
+ dname.len = strlen(name);
+
+ dent->ch.node_type = UBIFS_DENT_NODE;
+
+ dent_key_init(c, &key, dir_inum, &dname);
+ key_write(&key, dent->key);
+ dent->inum = cpu_to_le64(inum);
+ dent->padding1 = 0;
+ dent->type = type;
+ dent->nlen = cpu_to_le16(dname.len);
+ memcpy(dent->name, dname.name, dname.len);
+ dent->name[dname.len] = '\0';
+
+ len = UBIFS_DENT_NODE_SZ + dname.len + 1;
+
+ kname = strdup(name);
+ if (!kname)
+ return err_msg("cannot allocate memory");
+
+ return add_node(&key, kname, dent, len);
+}
+
+/**
+ * lookup_inum_mapping - add an inode mapping for link counting.
+ * @dev: source device on which source inode number resides
+ * @inum: source inode number
+ */
+static struct inum_mapping *lookup_inum_mapping(dev_t dev, ino_t inum)
+{
+ struct inum_mapping *im;
+ unsigned int k;
+
+ k = inum % HASH_TABLE_SIZE;
+ im = hash_table[k];
+ while (im) {
+ if (im->dev == dev && im->inum == inum)
+ return im;
+ im = im->next;
+ }
+ im = malloc(sizeof(struct inum_mapping));
+ if (!im)
+ return NULL;
+ im->next = hash_table[k];
+ im->prev = NULL;
+ im->dev = dev;
+ im->inum = inum;
+ im->use_inum = 0;
+ im->use_nlink = 0;
+ if (hash_table[k])
+ hash_table[k]->prev = im;
+ hash_table[k] = im;
+ return im;
+}
+
+/**
+ * all_zero - does a buffer contain only zero bytes.
+ * @buf: buffer
+ * @len: buffer length
+ */
+static int all_zero(void *buf, int len)
+{
+ unsigned char *p = buf;
+
+ while (len--)
+ if (*p++ != 0)
+ return 0;
+ return 1;
+}
+
+/**
+ * add_file - write the data of a file and its inode to the output file.
+ * @path_name: source path name
+ * @st: source inode stat information
+ * @inum: target inode number
+ * @flags: source inode flags
+ */
+static int add_file(const char *path_name, struct stat *st, ino_t inum,
+ int flags)
+{
+ struct ubifs_data_node *dn = node_buf;
+ void *buf = block_buf;
+ loff_t file_size = 0;
+ ssize_t ret, bytes_read;
+ union ubifs_key key;
+ int fd, dn_len, err, compr_type, use_compr;
+ unsigned int block_no = 0;
+ size_t out_len;
+
+ fd = open(path_name, O_RDONLY | O_LARGEFILE);
+ if (fd == -1)
+ return sys_err_msg("failed to open file '%s'", path_name);
+ do {
+ /* Read next block */
+ bytes_read = 0;
+ do {
+ ret = read(fd, buf + bytes_read,
+ UBIFS_BLOCK_SIZE - bytes_read);
+ if (ret == -1) {
+ sys_err_msg("failed to read file '%s'",
+ path_name);
+ close(fd);
+ return 1;
+ }
+ bytes_read += ret;
+ } while (ret != 0 && bytes_read != UBIFS_BLOCK_SIZE);
+ if (bytes_read == 0)
+ break;
+ file_size += bytes_read;
+ /* Skip holes */
+ if (all_zero(buf, bytes_read)) {
+ block_no += 1;
+ continue;
+ }
+ /* Make data node */
+ memset(dn, 0, UBIFS_DATA_NODE_SZ);
+ data_key_init(&key, inum, block_no++);
+ dn->ch.node_type = UBIFS_DATA_NODE;
+ key_write(&key, &dn->key);
+ dn->size = cpu_to_le32(bytes_read);
+ out_len = NODE_BUFFER_SIZE - UBIFS_DATA_NODE_SZ;
+ if (c->default_compr == UBIFS_COMPR_NONE &&
+ (flags & FS_COMPR_FL))
+ use_compr = UBIFS_COMPR_LZO;
+ else
+ use_compr = c->default_compr;
+ compr_type = compress_data(buf, bytes_read, &dn->data,
+ &out_len, use_compr);
+ dn->compr_type = cpu_to_le16(compr_type);
+ dn_len = UBIFS_DATA_NODE_SZ + out_len;
+ /* Add data node to file system */
+ err = add_node(&key, NULL, dn, dn_len);
+ if (err) {
+ close(fd);
+ return err;
+ }
+ } while (ret != 0);
+ if (close(fd) == -1)
+ return sys_err_msg("failed to close file '%s'", path_name);
+ if (file_size != st->st_size)
+ return err_msg("file size changed during writing file '%s'",
+ path_name);
+ return add_inode(st, inum, flags);
+}
+
+/**
+ * add_non_dir - write a non-directory to the output file.
+ * @path_name: source path name
+ * @inum: target inode number is passed and returned here (due to link counting)
+ * @nlink: number of links if known otherwise zero
+ * @type: UBIFS inode type is returned here
+ * @st: struct stat object containing inode attributes which should be use when
+ * creating the UBIFS inode
+ */
+static int add_non_dir(const char *path_name, ino_t *inum, unsigned int nlink,
+ unsigned char *type, struct stat *st)
+{
+ int fd, flags = 0;
+
+ dbg_msg(2, "%s", path_name);
+
+ if (S_ISREG(st->st_mode)) {
+ fd = open(path_name, O_RDONLY);
+ if (fd == -1)
+ return sys_err_msg("failed to open file '%s'",
+ path_name);
+ if (ioctl(fd, FS_IOC_GETFLAGS, &flags) == -1)
+ flags = 0;
+ if (close(fd) == -1)
+ return sys_err_msg("failed to close file '%s'",
+ path_name);
+ *type = UBIFS_ITYPE_REG;
+ } else if (S_ISCHR(st->st_mode))
+ *type = UBIFS_ITYPE_CHR;
+ else if (S_ISBLK(st->st_mode))
+ *type = UBIFS_ITYPE_BLK;
+ else if (S_ISLNK(st->st_mode))
+ *type = UBIFS_ITYPE_LNK;
+ else if (S_ISSOCK(st->st_mode))
+ *type = UBIFS_ITYPE_SOCK;
+ else if (S_ISFIFO(st->st_mode))
+ *type = UBIFS_ITYPE_FIFO;
+ else
+ return err_msg("file '%s' has unknown inode type", path_name);
+
+ if (nlink)
+ st->st_nlink = nlink;
+ else if (st->st_nlink > 1) {
+ /*
+ * If the number of links is greater than 1, then add this file
+ * later when we know the number of links that we actually have.
+ * For now, we just put the inode mapping in the hash table.
+ */
+ struct inum_mapping *im;
+
+ im = lookup_inum_mapping(st->st_dev, st->st_ino);
+ if (!im)
+ return err_msg("out of memory");
+ if (im->use_nlink == 0) {
+ /* New entry */
+ im->use_inum = *inum;
+ im->use_nlink = 1;
+ im->path_name = malloc(strlen(path_name) + 1);
+ if (!im->path_name)
+ return err_msg("out of memory");
+ strcpy(im->path_name, path_name);
+ } else {
+ /* Existing entry */
+ *inum = im->use_inum;
+ im->use_nlink += 1;
+ /* Return unused inode number */
+ c->highest_inum -= 1;
+ }
+
+ memcpy(&im->st, st, sizeof(struct stat));
+ return 0;
+ } else
+ st->st_nlink = 1;
+
+ creat_sqnum = ++c->max_sqnum;
+
+ if (S_ISREG(st->st_mode))
+ return add_file(path_name, st, *inum, flags);
+ if (S_ISCHR(st->st_mode))
+ return add_dev_inode(st, *inum, flags);
+ if (S_ISBLK(st->st_mode))
+ return add_dev_inode(st, *inum, flags);
+ if (S_ISLNK(st->st_mode))
+ return add_symlink_inode(path_name, st, *inum, flags);
+ if (S_ISSOCK(st->st_mode))
+ return add_inode(st, *inum, flags);
+ if (S_ISFIFO(st->st_mode))
+ return add_inode(st, *inum, flags);
+
+ return err_msg("file '%s' has unknown inode type", path_name);
+}
+
+/**
+ * add_directory - write a directory tree to the output file.
+ * @dir_name: directory path name
+ * @dir_inum: UBIFS inode number of directory
+ * @st: directory inode statistics
+ * @non_existing: non-zero if this function is called for a directory which
+ * does not exist on the host file-system and it is being
+ * created because it is defined in the device table file.
+ */
+static int add_directory(const char *dir_name, ino_t dir_inum, struct stat *st,
+ int non_existing)
+{
+ struct dirent *entry;
+ DIR *dir = NULL;
+ int err = 0;
+ loff_t size = UBIFS_INO_NODE_SZ;
+ char *name = NULL;
+ unsigned int nlink = 2;
+ struct path_htbl_element *ph_elt;
+ struct name_htbl_element *nh_elt = NULL;
+ struct hashtable_itr *itr;
+ ino_t inum;
+ unsigned char type;
+ unsigned long long dir_creat_sqnum = ++c->max_sqnum;
+
+ dbg_msg(2, "%s", dir_name);
+ if (!non_existing) {
+ dir = opendir(dir_name);
+ if (dir == NULL)
+ return sys_err_msg("cannot open directory '%s'",
+ dir_name);
+ }
+
+ /*
+ * Check whether this directory contains files which should be
+ * added/changed because they were specified in the device table.
+ * @ph_elt will be non-zero if yes.
+ */
+ ph_elt = devtbl_find_path(dir_name + root_len - 1);
+
+ /*
+ * Before adding the directory itself, we have to iterate over all the
+ * entries the device table adds to this directory and create them.
+ */
+ for (; !non_existing;) {
+ struct stat dent_st;
+
+ errno = 0;
+ entry = readdir(dir);
+ if (!entry) {
+ if (errno == 0)
+ break;
+ sys_err_msg("error reading directory '%s'", dir_name);
+ err = -1;
+ break;
+ }
+
+ if (strcmp(".", entry->d_name) == 0)
+ continue;
+ if (strcmp("..", entry->d_name) == 0)
+ continue;
+
+ if (ph_elt)
+ /*
+ * This directory was referred to at the device table
+ * file. Check if this directory entry is referred at
+ * too.
+ */
+ nh_elt = devtbl_find_name(ph_elt, entry->d_name);
+
+ /*
+ * We are going to create the file corresponding to this
+ * directory entry (@entry->d_name). We use 'struct stat'
+ * object to pass information about file attributes (actually
+ * only about UID, GID, mode, major, and minor). Get attributes
+ * for this file from the UBIFS rootfs on the host.
+ */
+ free(name);
+ name = make_path(dir_name, entry->d_name);
+ if (lstat(name, &dent_st) == -1) {
+ sys_err_msg("lstat failed for file '%s'", name);
+ goto out_free;
+ }
+
+ if (squash_owner)
+ /*
+ * Squash UID/GID. But the device table may override
+ * this.
+ */
+ dent_st.st_uid = dent_st.st_gid = 0;
+
+ /*
+ * And if the device table describes the same file, override
+ * the attributes. However, this is not allowed for device node
+ * files.
+ */
+ if (nh_elt && override_attributes(&dent_st, ph_elt, nh_elt))
+ goto out_free;
+
+ inum = ++c->highest_inum;
+
+ if (S_ISDIR(dent_st.st_mode)) {
+ err = add_directory(name, inum, &dent_st, 0);
+ if (err)
+ goto out_free;
+ nlink += 1;
+ type = UBIFS_ITYPE_DIR;
+ } else {
+ err = add_non_dir(name, &inum, 0, &type, &dent_st);
+ if (err)
+ goto out_free;
+ }
+
+ err = add_dent_node(dir_inum, entry->d_name, inum, type);
+ if (err)
+ goto out_free;
+ size += ALIGN(UBIFS_DENT_NODE_SZ + strlen(entry->d_name) + 1,
+ 8);
+ }
+
+ /*
+ * OK, we have created all files in this directory (recursively), let's
+ * also create all files described in the device table. All t
+ */
+ nh_elt = first_name_htbl_element(ph_elt, &itr);
+ while (nh_elt) {
+ struct stat fake_st;
+
+ /*
+ * We prohibit creating regular files using the device table,
+ * the device table may only re-define attributes of regular
+ * files.
+ */
+ if (S_ISREG(nh_elt->mode)) {
+ err_msg("Bad device table entry %s/%s - it is "
+ "prohibited to create regular files "
+ "via device table",
+ strcmp(ph_elt->path, "/") ? ph_elt->path : "",
+ nh_elt->name);
+ goto out_free;
+ }
+
+ memcpy(&fake_st, &root_st, sizeof(struct stat));
+ fake_st.st_uid = nh_elt->uid;
+ fake_st.st_uid = nh_elt->uid;
+ fake_st.st_mode = nh_elt->mode;
+ fake_st.st_rdev = nh_elt->dev;
+ fake_st.st_nlink = 1;
+
+ free(name);
+ name = make_path(dir_name, nh_elt->name);
+ inum = ++c->highest_inum;
+
+ if (S_ISDIR(nh_elt->mode)) {
+ err = add_directory(name, inum, &fake_st, 1);
+ if (err)
+ goto out_free;
+ nlink += 1;
+ type = UBIFS_ITYPE_DIR;
+ } else {
+ err = add_non_dir(name, &inum, 0, &type, &fake_st);
+ if (err)
+ goto out_free;
+ }
+
+ err = add_dent_node(dir_inum, nh_elt->name, inum, type);
+ if (err)
+ goto out_free;
+ size += ALIGN(UBIFS_DENT_NODE_SZ + strlen(nh_elt->name) + 1, 8);
+
+ nh_elt = next_name_htbl_element(ph_elt, &itr);
+ }
+
+ creat_sqnum = dir_creat_sqnum;
+
+ err = add_dir_inode(dir, dir_inum, size, nlink, st);
+ if (err)
+ goto out_free;
+
+ free(name);
+ if (!non_existing && closedir(dir) == -1)
+ return sys_err_msg("error closing directory '%s'", dir_name);
+
+ return 0;
+
+out_free:
+ free(name);
+ if (!non_existing)
+ closedir(dir);
+ return -1;
+}
+
+/**
+ * add_multi_linked_files - write all the files for which we counted links.
+ */
+static int add_multi_linked_files(void)
+{
+ int i, err;
+
+ for (i = 0; i < HASH_TABLE_SIZE; i++) {
+ struct inum_mapping *im;
+ unsigned char type = 0;
+
+ for (im = hash_table[i]; im; im = im->next) {
+ dbg_msg(2, "%s", im->path_name);
+ err = add_non_dir(im->path_name, &im->use_inum,
+ im->use_nlink, &type, &im->st);
+ if (err)
+ return err;
+ }
+ }
+ return 0;
+}
+
+/**
+ * write_data - write the files and directories.
+ */
+static int write_data(void)
+{
+ int err;
+ mode_t mode = S_IFDIR | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
+
+ if (root) {
+ err = stat(root, &root_st);
+ if (err)
+ return sys_err_msg("bad root file-system directory '%s'",
+ root);
+ } else {
+ root_st.st_mtime = time(NULL);
+ root_st.st_atime = root_st.st_ctime = root_st.st_mtime;
+ root_st.st_mode = mode;
+ }
+
+ head_flags = 0;
+ err = add_directory(root, UBIFS_ROOT_INO, &root_st, !root);
+ if (err)
+ return err;
+ err = add_multi_linked_files();
+ if (err)
+ return err;
+ return flush_nodes();
+}
+
+static int namecmp(const char *name1, const char *name2)
+{
+ size_t len1 = strlen(name1), len2 = strlen(name2);
+ size_t clen = (len1 < len2) ? len1 : len2;
+ int cmp;
+
+ cmp = memcmp(name1, name2, clen);
+ if (cmp)
+ return cmp;
+ return (len1 < len2) ? -1 : 1;
+}
+
+static int cmp_idx(const void *a, const void *b)
+{
+ const struct idx_entry *e1 = *(const struct idx_entry **)a;
+ const struct idx_entry *e2 = *(const struct idx_entry **)b;
+ int cmp;
+
+ cmp = keys_cmp(&e1->key, &e2->key);
+ if (cmp)
+ return cmp;
+ return namecmp(e1->name, e2->name);
+}
+
+/**
+ * add_idx_node - write an index node to the head.
+ * @node: index node
+ * @child_cnt: number of children of this index node
+ */
+static int add_idx_node(void *node, int child_cnt)
+{
+ int err, lnum, offs, len;
+
+ len = ubifs_idx_node_sz(c, child_cnt);
+
+ prepare_node(node, len);
+
+ err = reserve_space(len, &lnum, &offs);
+ if (err)
+ return err;
+
+ memcpy(leb_buf + offs, node, len);
+ memset(leb_buf + offs + len, 0xff, ALIGN(len, 8) - len);
+
+ c->old_idx_sz += ALIGN(len, 8);
+
+ dbg_msg(3, "at %d:%d len %d index size %llu", lnum, offs, len,
+ c->old_idx_sz);
+
+ /* The last index node written will be the root */
+ c->zroot.lnum = lnum;
+ c->zroot.offs = offs;
+ c->zroot.len = len;
+
+ return 0;
+}
+
+/**
+ * write_index - write out the index.
+ */
+static int write_index(void)
+{
+ size_t sz, i, cnt, idx_sz, pstep, bcnt;
+ struct idx_entry **idx_ptr, **p;
+ struct ubifs_idx_node *idx;
+ struct ubifs_branch *br;
+ int child_cnt = 0, j, level, blnum, boffs, blen, blast_len, err;
+
+ dbg_msg(1, "leaf node count: %zd", idx_cnt);
+
+ /* Reset the head for the index */
+ head_flags = LPROPS_INDEX;
+ /* Allocate index node */
+ idx_sz = ubifs_idx_node_sz(c, c->fanout);
+ idx = malloc(idx_sz);
+ if (!idx)
+ return err_msg("out of memory");
+ /* Make an array of pointers to sort the index list */
+ sz = idx_cnt * sizeof(struct idx_entry *);
+ if (sz / sizeof(struct idx_entry *) != idx_cnt) {
+ free(idx);
+ return err_msg("index is too big (%zu entries)", idx_cnt);
+ }
+ idx_ptr = malloc(sz);
+ if (!idx_ptr) {
+ free(idx);
+ return err_msg("out of memory - needed %zu bytes for index",
+ sz);
+ }
+ idx_ptr[0] = idx_list_first;
+ for (i = 1; i < idx_cnt; i++)
+ idx_ptr[i] = idx_ptr[i - 1]->next;
+ qsort(idx_ptr, idx_cnt, sizeof(struct idx_entry *), cmp_idx);
+ /* Write level 0 index nodes */
+ cnt = idx_cnt / c->fanout;
+ if (idx_cnt % c->fanout)
+ cnt += 1;
+ p = idx_ptr;
+ blnum = head_lnum;
+ boffs = head_offs;
+ for (i = 0; i < cnt; i++) {
+ /*
+ * Calculate the child count. All index nodes are created full
+ * except for the last index node on each row.
+ */
+ if (i == cnt - 1) {
+ child_cnt = idx_cnt % c->fanout;
+ if (child_cnt == 0)
+ child_cnt = c->fanout;
+ } else
+ child_cnt = c->fanout;
+ memset(idx, 0, idx_sz);
+ idx->ch.node_type = UBIFS_IDX_NODE;
+ idx->child_cnt = cpu_to_le16(child_cnt);
+ idx->level = cpu_to_le16(0);
+ for (j = 0; j < child_cnt; j++, p++) {
+ br = ubifs_idx_branch(c, idx, j);
+ key_write_idx(&(*p)->key, &br->key);
+ br->lnum = cpu_to_le32((*p)->lnum);
+ br->offs = cpu_to_le32((*p)->offs);
+ br->len = cpu_to_le32((*p)->len);
+ }
+ add_idx_node(idx, child_cnt);
+ }
+ /* Write level 1 index nodes and above */
+ level = 0;
+ pstep = 1;
+ while (cnt > 1) {
+ /*
+ * 'blast_len' is the length of the last index node in the level
+ * below.
+ */
+ blast_len = ubifs_idx_node_sz(c, child_cnt);
+ /* 'bcnt' is the number of index nodes in the level below */
+ bcnt = cnt;
+ /* 'cnt' is the number of index nodes in this level */
+ cnt = (cnt + c->fanout - 1) / c->fanout;
+ if (cnt == 0)
+ cnt = 1;
+ level += 1;
+ /*
+ * The key of an index node is the same as the key of its first
+ * child. Thus we can get the key by stepping along the bottom
+ * level 'p' with an increasing large step 'pstep'.
+ */
+ p = idx_ptr;
+ pstep *= c->fanout;
+ for (i = 0; i < cnt; i++) {
+ /*
+ * Calculate the child count. All index nodes are
+ * created full except for the last index node on each
+ * row.
+ */
+ if (i == cnt - 1) {
+ child_cnt = bcnt % c->fanout;
+ if (child_cnt == 0)
+ child_cnt = c->fanout;
+ } else
+ child_cnt = c->fanout;
+ memset(idx, 0, idx_sz);
+ idx->ch.node_type = UBIFS_IDX_NODE;
+ idx->child_cnt = cpu_to_le16(child_cnt);
+ idx->level = cpu_to_le16(level);
+ for (j = 0; j < child_cnt; j++) {
+ size_t bn = i * c->fanout + j;
+
+ /*
+ * The length of the index node in the level
+ * below is 'idx_sz' except when it is the last
+ * node on the row. i.e. all the others on the
+ * row are full.
+ */
+ if (bn == bcnt - 1)
+ blen = blast_len;
+ else
+ blen = idx_sz;
+ /*
+ * 'blnum' and 'boffs' hold the position of the
+ * index node on the level below.
+ */
+ if (boffs + blen > c->leb_size) {
+ blnum += 1;
+ boffs = 0;
+ }
+ /*
+ * Fill in the branch with the key and position
+ * of the index node from the level below.
+ */
+ br = ubifs_idx_branch(c, idx, j);
+ key_write_idx(&(*p)->key, &br->key);
+ br->lnum = cpu_to_le32(blnum);
+ br->offs = cpu_to_le32(boffs);
+ br->len = cpu_to_le32(blen);
+ /*
+ * Step to the next index node on the level
+ * below.
+ */
+ boffs += ALIGN(blen, 8);
+ p += pstep;
+ }
+ add_idx_node(idx, child_cnt);
+ }
+ }
+
+ /* Free stuff */
+ for (i = 0; i < idx_cnt; i++)
+ free(idx_ptr[i]);
+ free(idx_ptr);
+ free(idx);
+
+ dbg_msg(1, "zroot is at %d:%d len %d", c->zroot.lnum, c->zroot.offs,
+ c->zroot.len);
+
+ /* Set the index head */
+ c->ihead_lnum = head_lnum;
+ c->ihead_offs = ALIGN(head_offs, c->min_io_size);
+ dbg_msg(1, "ihead is at %d:%d", c->ihead_lnum, c->ihead_offs);
+
+ /* Flush the last index LEB */
+ err = flush_nodes();
+ if (err)
+ return err;
+
+ return 0;
+}
+
+/**
+ * set_gc_lnum - set the LEB number reserved for the garbage collector.
+ */
+static int set_gc_lnum(void)
+{
+ int err;
+
+ c->gc_lnum = head_lnum++;
+ err = write_empty_leb(c->gc_lnum);
+ if (err)
+ return err;
+ set_lprops(c->gc_lnum, 0, 0);
+ c->lst.empty_lebs += 1;
+ return 0;
+}
+
+/**
+ * finalize_leb_cnt - now that we know how many LEBs we used.
+ */
+static int finalize_leb_cnt(void)
+{
+ c->leb_cnt = head_lnum;
+ if (c->leb_cnt > c->max_leb_cnt)
+ return err_msg("max_leb_cnt too low (%d needed)", c->leb_cnt);
+ c->main_lebs = c->leb_cnt - c->main_first;
+ if (verbose) {
+ printf("\tsuper lebs: %d\n", UBIFS_SB_LEBS);
+ printf("\tmaster lebs: %d\n", UBIFS_MST_LEBS);
+ printf("\tlog_lebs: %d\n", c->log_lebs);
+ printf("\tlpt_lebs: %d\n", c->lpt_lebs);
+ printf("\torph_lebs: %d\n", c->orph_lebs);
+ printf("\tmain_lebs: %d\n", c->main_lebs);
+ printf("\tgc lebs: %d\n", 1);
+ printf("\tindex lebs: %d\n", c->lst.idx_lebs);
+ printf("\tleb_cnt: %d\n", c->leb_cnt);
+ }
+ dbg_msg(1, "total_free: %llu", c->lst.total_free);
+ dbg_msg(1, "total_dirty: %llu", c->lst.total_dirty);
+ dbg_msg(1, "total_used: %llu", c->lst.total_used);
+ dbg_msg(1, "total_dead: %llu", c->lst.total_dead);
+ dbg_msg(1, "total_dark: %llu", c->lst.total_dark);
+ dbg_msg(1, "index size: %llu", c->old_idx_sz);
+ dbg_msg(1, "empty_lebs: %d", c->lst.empty_lebs);
+ return 0;
+}
+
+/**
+ * write_super - write the super block.
+ */
+static int write_super(void)
+{
+ struct ubifs_sb_node sup;
+
+ memset(&sup, 0, UBIFS_SB_NODE_SZ);
+
+ sup.ch.node_type = UBIFS_SB_NODE;
+ sup.key_hash = c->key_hash_type;
+ sup.min_io_size = cpu_to_le32(c->min_io_size);
+ sup.leb_size = cpu_to_le32(c->leb_size);
+ sup.leb_cnt = cpu_to_le32(c->leb_cnt);
+ sup.max_leb_cnt = cpu_to_le32(c->max_leb_cnt);
+ sup.max_bud_bytes = cpu_to_le64(c->max_bud_bytes);
+ sup.log_lebs = cpu_to_le32(c->log_lebs);
+ sup.lpt_lebs = cpu_to_le32(c->lpt_lebs);
+ sup.orph_lebs = cpu_to_le32(c->orph_lebs);
+ sup.jhead_cnt = cpu_to_le32(c->jhead_cnt);
+ sup.fanout = cpu_to_le32(c->fanout);
+ sup.lsave_cnt = cpu_to_le32(c->lsave_cnt);
+ sup.fmt_version = cpu_to_le32(UBIFS_FORMAT_VERSION);
+ sup.default_compr = cpu_to_le16(c->default_compr);
+ sup.rp_size = cpu_to_le64(c->rp_size);
+ sup.time_gran = cpu_to_le32(DEFAULT_TIME_GRAN);
+ uuid_generate_random(sup.uuid);
+ if (verbose) {
+ char s[40];
+
+ uuid_unparse_upper(sup.uuid, s);
+ printf("\tUUID: %s\n", s);
+ }
+ if (c->big_lpt)
+ sup.flags |= cpu_to_le32(UBIFS_FLG_BIGLPT);
+ if (c->space_fixup)
+ sup.flags |= cpu_to_le32(UBIFS_FLG_SPACE_FIXUP);
+
+ return write_node(&sup, UBIFS_SB_NODE_SZ, UBIFS_SB_LNUM);
+}
+
+/**
+ * write_master - write the master node.
+ */
+static int write_master(void)
+{
+ struct ubifs_mst_node mst;
+ int err;
+
+ memset(&mst, 0, UBIFS_MST_NODE_SZ);
+
+ mst.ch.node_type = UBIFS_MST_NODE;
+ mst.log_lnum = cpu_to_le32(UBIFS_LOG_LNUM);
+ mst.highest_inum = cpu_to_le64(c->highest_inum);
+ mst.cmt_no = cpu_to_le64(0);
+ mst.flags = cpu_to_le32(UBIFS_MST_NO_ORPHS);
+ mst.root_lnum = cpu_to_le32(c->zroot.lnum);
+ mst.root_offs = cpu_to_le32(c->zroot.offs);
+ mst.root_len = cpu_to_le32(c->zroot.len);
+ mst.gc_lnum = cpu_to_le32(c->gc_lnum);
+ mst.ihead_lnum = cpu_to_le32(c->ihead_lnum);
+ mst.ihead_offs = cpu_to_le32(c->ihead_offs);
+ mst.index_size = cpu_to_le64(c->old_idx_sz);
+ mst.lpt_lnum = cpu_to_le32(c->lpt_lnum);
+ mst.lpt_offs = cpu_to_le32(c->lpt_offs);
+ mst.nhead_lnum = cpu_to_le32(c->nhead_lnum);
+ mst.nhead_offs = cpu_to_le32(c->nhead_offs);
+ mst.ltab_lnum = cpu_to_le32(c->ltab_lnum);
+ mst.ltab_offs = cpu_to_le32(c->ltab_offs);
+ mst.lsave_lnum = cpu_to_le32(c->lsave_lnum);
+ mst.lsave_offs = cpu_to_le32(c->lsave_offs);
+ mst.lscan_lnum = cpu_to_le32(c->lscan_lnum);
+ mst.empty_lebs = cpu_to_le32(c->lst.empty_lebs);
+ mst.idx_lebs = cpu_to_le32(c->lst.idx_lebs);
+ mst.total_free = cpu_to_le64(c->lst.total_free);
+ mst.total_dirty = cpu_to_le64(c->lst.total_dirty);
+ mst.total_used = cpu_to_le64(c->lst.total_used);
+ mst.total_dead = cpu_to_le64(c->lst.total_dead);
+ mst.total_dark = cpu_to_le64(c->lst.total_dark);
+ mst.leb_cnt = cpu_to_le32(c->leb_cnt);
+
+ err = write_node(&mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM);
+ if (err)
+ return err;
+
+ err = write_node(&mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+/**
+ * write_log - write an empty log.
+ */
+static int write_log(void)
+{
+ struct ubifs_cs_node cs;
+ int err, i, lnum;
+
+ lnum = UBIFS_LOG_LNUM;
+
+ cs.ch.node_type = UBIFS_CS_NODE;
+ cs.cmt_no = cpu_to_le64(0);
+
+ err = write_node(&cs, UBIFS_CS_NODE_SZ, lnum);
+ if (err)
+ return err;
+
+ lnum += 1;
+
+ for (i = 1; i < c->log_lebs; i++, lnum++) {
+ err = write_empty_leb(lnum);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * write_lpt - write the LEB properties tree.
+ */
+static int write_lpt(void)
+{
+ int err, lnum;
+
+ err = create_lpt(c);
+ if (err)
+ return err;
+
+ lnum = c->nhead_lnum + 1;
+ while (lnum <= c->lpt_last) {
+ err = write_empty_leb(lnum++);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * write_orphan_area - write an empty orphan area.
+ */
+static int write_orphan_area(void)
+{
+ int err, i, lnum;
+
+ lnum = UBIFS_LOG_LNUM + c->log_lebs + c->lpt_lebs;
+ for (i = 0; i < c->orph_lebs; i++, lnum++) {
+ err = write_empty_leb(lnum);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+/**
+ * check_volume_empty - check if the UBI volume is empty.
+ *
+ * This function checks if the UBI volume is empty by looking if its LEBs are
+ * mapped or not.
+ *
+ * Returns %0 in case of success, %1 is the volume is not empty,
+ * and a negative error code in case of failure.
+ */
+static int check_volume_empty(void)
+{
+ int lnum, err;
+
+ for (lnum = 0; lnum < c->vi.rsvd_lebs; lnum++) {
+ err = ubi_is_mapped(out_fd, lnum);
+ if (err < 0)
+ return err;
+ if (err == 1)
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * open_target - open the output target.
+ *
+ * Open the output target. The target can be an UBI volume
+ * or a file.
+ *
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
+static int open_target(void)
+{
+ if (out_ubi) {
+ out_fd = open(output, O_RDWR | O_EXCL);
+
+ if (out_fd == -1)
+ return sys_err_msg("cannot open the UBI volume '%s'",
+ output);
+ if (ubi_set_property(out_fd, UBI_VOL_PROP_DIRECT_WRITE, 1))
+ return sys_err_msg("ubi_set_property failed");
+
+ if (!yes && check_volume_empty()) {
+ if (!prompt("UBI volume is not empty. Format anyways?", false))
+ return err_msg("UBI volume is not empty");
+ }
+ } else {
+ out_fd = open(output, O_CREAT | O_RDWR | O_TRUNC,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
+ if (out_fd == -1)
+ return sys_err_msg("cannot create output file '%s'",
+ output);
+ }
+ return 0;
+}
+
+
+/**
+ * close_target - close the output target.
+ *
+ * Close the output target. If the target was an UBI
+ * volume, also close libubi.
+ *
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
+static int close_target(void)
+{
+ if (ubi)
+ libubi_close(ubi);
+ if (out_fd >= 0 && close(out_fd) == -1)
+ return sys_err_msg("cannot close the target '%s'", output);
+ if (output)
+ free(output);
+ return 0;
+}
+
+/**
+ * init - initialize things.
+ */
+static int init(void)
+{
+ int err, i, main_lebs, big_lpt = 0, sz;
+
+ c->highest_inum = UBIFS_FIRST_INO;
+
+ c->jhead_cnt = 1;
+
+ main_lebs = c->max_leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS;
+ main_lebs -= c->log_lebs + c->orph_lebs;
+
+ err = calc_dflt_lpt_geom(c, &main_lebs, &big_lpt);
+ if (err)
+ return err;
+
+ c->main_first = UBIFS_LOG_LNUM + c->log_lebs + c->lpt_lebs +
+ c->orph_lebs;
+ head_lnum = c->main_first;
+ head_offs = 0;
+
+ c->lpt_first = UBIFS_LOG_LNUM + c->log_lebs;
+ c->lpt_last = c->lpt_first + c->lpt_lebs - 1;
+
+ c->lpt = malloc(c->main_lebs * sizeof(struct ubifs_lprops));
+ if (!c->lpt)
+ return err_msg("unable to allocate LPT");
+
+ c->ltab = malloc(c->lpt_lebs * sizeof(struct ubifs_lprops));
+ if (!c->ltab)
+ return err_msg("unable to allocate LPT ltab");
+
+ /* Initialize LPT's own lprops */
+ for (i = 0; i < c->lpt_lebs; i++) {
+ c->ltab[i].free = c->leb_size;
+ c->ltab[i].dirty = 0;
+ }
+
+ c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size);
+ c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size);
+ dbg_msg(1, "dead_wm %d dark_wm %d", c->dead_wm, c->dark_wm);
+
+ leb_buf = malloc(c->leb_size);
+ if (!leb_buf)
+ return err_msg("out of memory");
+
+ node_buf = malloc(NODE_BUFFER_SIZE);
+ if (!node_buf)
+ return err_msg("out of memory");
+
+ block_buf = malloc(UBIFS_BLOCK_SIZE);
+ if (!block_buf)
+ return err_msg("out of memory");
+
+ sz = sizeof(struct inum_mapping *) * HASH_TABLE_SIZE;
+ hash_table = malloc(sz);
+ if (!hash_table)
+ return err_msg("out of memory");
+ memset(hash_table, 0, sz);
+
+ err = init_compression();
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static void destroy_hash_table(void)
+{
+ int i;
+
+ for (i = 0; i < HASH_TABLE_SIZE; i++) {
+ struct inum_mapping *im, *q;
+
+ for (im = hash_table[i]; im; ) {
+ q = im;
+ im = im->next;
+ free(q->path_name);
+ free(q);
+ }
+ }
+}
+
+/**
+ * deinit - deinitialize things.
+ */
+static void deinit(void)
+{
+ free(c->lpt);
+ free(c->ltab);
+ free(leb_buf);
+ free(node_buf);
+ free(block_buf);
+ destroy_hash_table();
+ free(hash_table);
+ destroy_compression();
+ free_devtable_info();
+}
+
+/**
+ * mkfs - make the file system.
+ *
+ * Each on-flash area has a corresponding function to create it. The order of
+ * the functions reflects what information must be known to complete each stage.
+ * As a consequence the output file is not written sequentially. No effort has
+ * been made to make efficient use of memory or to allow for the possibility of
+ * incremental updates to the output file.
+ */
+static int mkfs(void)
+{
+ int err = 0;
+
+ err = init();
+ if (err)
+ goto out;
+
+ err = write_data();
+ if (err)
+ goto out;
+
+ err = set_gc_lnum();
+ if (err)
+ goto out;
+
+ err = write_index();
+ if (err)
+ goto out;
+
+ err = finalize_leb_cnt();
+ if (err)
+ goto out;
+
+ err = write_lpt();
+ if (err)
+ goto out;
+
+ err = write_super();
+ if (err)
+ goto out;
+
+ err = write_master();
+ if (err)
+ goto out;
+
+ err = write_log();
+ if (err)
+ goto out;
+
+ err = write_orphan_area();
+
+out:
+ deinit();
+ return err;
+}
+
+int main(int argc, char *argv[])
+{
+ int err;
+
+ err = get_options(argc, argv);
+ if (err)
+ return err;
+
+ err = open_target();
+ if (err)
+ return err;
+
+ err = mkfs();
+ if (err) {
+ close_target();
+ return err;
+ }
+
+ err = close_target();
+ if (err)
+ return err;
+
+ if (verbose)
+ printf("Success!\n");
+
+ return 0;
+}
diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.h b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.h
new file mode 100644
index 0000000..944a159
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.h
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2008 Nokia Corporation.
+ * Copyright (C) 2008 University of Szeged, Hungary
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy
+ * Adrian Hunter
+ * Zoltan Sogor
+ */
+
+#ifndef __MKFS_UBIFS_H__
+#define __MKFS_UBIFS_H__
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <limits.h>
+#include <string.h>
+#include <stdint.h>
+#include <endian.h>
+#include <byteswap.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <libgen.h>
+#include <ctype.h>
+#include <uuid/uuid.h>
+#include <sys/file.h>
+
+#include <mtd/ubifs-media.h>
+
+/* common.h requires the PROGRAM_NAME macro */
+#define PROGRAM_NAME "mkfs.ubifs"
+#include "common.h"
+
+#include "libubi.h"
+#include "defs.h"
+#include "crc16.h"
+#include "ubifs.h"
+#include "key.h"
+#include "lpt.h"
+#include "compr.h"
+
+/*
+ * Compression flags are duplicated so that compr.c can compile without ubifs.h.
+ * Here we make sure they are the same.
+ */
+#if MKFS_UBIFS_COMPR_NONE != UBIFS_COMPR_NONE
+#error MKFS_UBIFS_COMPR_NONE != UBIFS_COMPR_NONE
+#endif
+#if MKFS_UBIFS_COMPR_LZO != UBIFS_COMPR_LZO
+#error MKFS_UBIFS_COMPR_LZO != UBIFS_COMPR_LZO
+#endif
+#if MKFS_UBIFS_COMPR_ZLIB != UBIFS_COMPR_ZLIB
+#error MKFS_UBIFS_COMPR_ZLIB != UBIFS_COMPR_ZLIB
+#endif
+
+extern int verbose;
+extern int debug_level;
+
+#define dbg_msg(lvl, fmt, ...) do {if (debug_level >= lvl) \
+ printf("mkfs.ubifs: %s: " fmt "\n", __FUNCTION__, ##__VA_ARGS__); \
+} while(0)
+
+#define err_msg(fmt, ...) ({ \
+ fprintf(stderr, "Error: " fmt "\n", ##__VA_ARGS__); \
+ -1; \
+})
+
+#define sys_err_msg(fmt, ...) ({ \
+ int err_ = errno; \
+ fprintf(stderr, "Error: " fmt "\n", ##__VA_ARGS__); \
+ fprintf(stderr, " %s (error %d)\n", strerror(err_), err_); \
+ -1; \
+})
+
+/**
+ * struct path_htbl_element - an element of the path hash table.
+ * @path: the UBIFS path the element describes (the key of the element)
+ * @name_htbl: one more (nested) hash table containing names of all
+ * files/directories/device nodes which should be created at this
+ * path
+ *
+ * See device table handling for more information.
+ */
+struct path_htbl_element {
+ const char *path;
+ struct hashtable *name_htbl;
+};
+
+/**
+ * struct name_htbl_element - an element in the name hash table
+ * @name: name of the file/directory/device node (the key of the element)
+ * @mode: accsess rights and file type
+ * @uid: user ID
+ * @gid: group ID
+ * @major: device node major number
+ * @minor: device node minor number
+ *
+ * This is an element of the name hash table. Name hash table sits in the path
+ * hash table elements and describes file names which should be created/changed
+ * at this path.
+ */
+struct name_htbl_element {
+ const char *name;
+ unsigned int mode;
+ unsigned int uid;
+ unsigned int gid;
+ dev_t dev;
+};
+
+extern struct ubifs_info info_;
+
+struct hashtable_itr;
+
+int write_leb(int lnum, int len, void *buf);
+int parse_devtable(const char *tbl_file);
+struct path_htbl_element *devtbl_find_path(const char *path);
+struct name_htbl_element *devtbl_find_name(struct path_htbl_element *ph_elt,
+ const char *name);
+int override_attributes(struct stat *st, struct path_htbl_element *ph_elt,
+ struct name_htbl_element *nh_elt);
+struct name_htbl_element *
+first_name_htbl_element(struct path_htbl_element *ph_elt,
+ struct hashtable_itr **itr);
+struct name_htbl_element *
+next_name_htbl_element(struct path_htbl_element *ph_elt,
+ struct hashtable_itr **itr);
+void free_devtable_info(void);
+
+#endif
diff --git a/ubifs-utils/mkfs.ubifs/ubifs.h b/ubifs-utils/mkfs.ubifs/ubifs.h
new file mode 100644
index 0000000..434b651
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/ubifs.h
@@ -0,0 +1,441 @@
+/*
+ * This file is part of UBIFS.
+ *
+ * Copyright (C) 2008 Nokia Corporation.
+ * Copyright (C) 2008 University of Szeged, Hungary
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Artem Bityutskiy
+ * Adrian Hunter
+ * Zoltan Sogor
+ */
+
+#ifndef __UBIFS_H__
+#define __UBIFS_H__
+
+/* Maximum logical eraseblock size in bytes */
+#define UBIFS_MAX_LEB_SZ (2*1024*1024)
+
+/* Minimum amount of data UBIFS writes to the flash */
+#define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8)
+
+/* Largest key size supported in this implementation */
+#define CUR_MAX_KEY_LEN UBIFS_SK_LEN
+
+/*
+ * There is no notion of truncation key because truncation nodes do not exist
+ * in TNC. However, when replaying, it is handy to introduce fake "truncation"
+ * keys for truncation nodes because the code becomes simpler. So we define
+ * %UBIFS_TRUN_KEY type.
+ */
+#define UBIFS_TRUN_KEY UBIFS_KEY_TYPES_CNT
+
+/* The below union makes it easier to deal with keys */
+union ubifs_key
+{
+ uint8_t u8[CUR_MAX_KEY_LEN];
+ uint32_t u32[CUR_MAX_KEY_LEN/4];
+ uint64_t u64[CUR_MAX_KEY_LEN/8];
+ __le32 j32[CUR_MAX_KEY_LEN/4];
+};
+
+/*
+ * LEB properties flags.
+ *
+ * LPROPS_UNCAT: not categorized
+ * LPROPS_DIRTY: dirty > 0, not index
+ * LPROPS_DIRTY_IDX: dirty + free > UBIFS_CH_SZ and index
+ * LPROPS_FREE: free > 0, not empty, not index
+ * LPROPS_HEAP_CNT: number of heaps used for storing categorized LEBs
+ * LPROPS_EMPTY: LEB is empty, not taken
+ * LPROPS_FREEABLE: free + dirty == leb_size, not index, not taken
+ * LPROPS_FRDI_IDX: free + dirty == leb_size and index, may be taken
+ * LPROPS_CAT_MASK: mask for the LEB categories above
+ * LPROPS_TAKEN: LEB was taken (this flag is not saved on the media)
+ * LPROPS_INDEX: LEB contains indexing nodes (this flag also exists on flash)
+ */
+enum {
+ LPROPS_UNCAT = 0,
+ LPROPS_DIRTY = 1,
+ LPROPS_DIRTY_IDX = 2,
+ LPROPS_FREE = 3,
+ LPROPS_HEAP_CNT = 3,
+ LPROPS_EMPTY = 4,
+ LPROPS_FREEABLE = 5,
+ LPROPS_FRDI_IDX = 6,
+ LPROPS_CAT_MASK = 15,
+ LPROPS_TAKEN = 16,
+ LPROPS_INDEX = 32,
+};
+
+/**
+ * struct ubifs_lprops - logical eraseblock properties.
+ * @free: amount of free space in bytes
+ * @dirty: amount of dirty space in bytes
+ * @flags: LEB properties flags (see above)
+ */
+struct ubifs_lprops
+{
+ int free;
+ int dirty;
+ int flags;
+};
+
+/**
+ * struct ubifs_lpt_lprops - LPT logical eraseblock properties.
+ * @free: amount of free space in bytes
+ * @dirty: amount of dirty space in bytes
+ */
+struct ubifs_lpt_lprops
+{
+ int free;
+ int dirty;
+};
+
+struct ubifs_nnode;
+
+/**
+ * struct ubifs_cnode - LEB Properties Tree common node.
+ * @parent: parent nnode
+ * @cnext: next cnode to commit
+ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
+ * @iip: index in parent
+ * @level: level in the tree (zero for pnodes, greater than zero for nnodes)
+ * @num: node number
+ */
+struct ubifs_cnode
+{
+ struct ubifs_nnode *parent;
+ struct ubifs_cnode *cnext;
+ unsigned long flags;
+ int iip;
+ int level;
+ int num;
+};
+
+/**
+ * struct ubifs_pnode - LEB Properties Tree leaf node.
+ * @parent: parent nnode
+ * @cnext: next cnode to commit
+ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
+ * @iip: index in parent
+ * @level: level in the tree (always zero for pnodes)
+ * @num: node number
+ * @lprops: LEB properties array
+ */
+struct ubifs_pnode
+{
+ struct ubifs_nnode *parent;
+ struct ubifs_cnode *cnext;
+ unsigned long flags;
+ int iip;
+ int level;
+ int num;
+ struct ubifs_lprops lprops[UBIFS_LPT_FANOUT];
+};
+
+/**
+ * struct ubifs_nbranch - LEB Properties Tree internal node branch.
+ * @lnum: LEB number of child
+ * @offs: offset of child
+ * @nnode: nnode child
+ * @pnode: pnode child
+ * @cnode: cnode child
+ */
+struct ubifs_nbranch
+{
+ int lnum;
+ int offs;
+ union
+ {
+ struct ubifs_nnode *nnode;
+ struct ubifs_pnode *pnode;
+ struct ubifs_cnode *cnode;
+ };
+};
+
+/**
+ * struct ubifs_nnode - LEB Properties Tree internal node.
+ * @parent: parent nnode
+ * @cnext: next cnode to commit
+ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
+ * @iip: index in parent
+ * @level: level in the tree (always greater than zero for nnodes)
+ * @num: node number
+ * @nbranch: branches to child nodes
+ */
+struct ubifs_nnode
+{
+ struct ubifs_nnode *parent;
+ struct ubifs_cnode *cnext;
+ unsigned long flags;
+ int iip;
+ int level;
+ int num;
+ struct ubifs_nbranch nbranch[UBIFS_LPT_FANOUT];
+};
+
+/**
+ * struct ubifs_lp_stats - statistics of eraseblocks in the main area.
+ * @empty_lebs: number of empty LEBs
+ * @taken_empty_lebs: number of taken LEBs
+ * @idx_lebs: number of indexing LEBs
+ * @total_free: total free space in bytes
+ * @total_dirty: total dirty space in bytes
+ * @total_used: total used space in bytes (includes only data LEBs)
+ * @total_dead: total dead space in bytes (includes only data LEBs)
+ * @total_dark: total dark space in bytes (includes only data LEBs)
+ */
+struct ubifs_lp_stats {
+ int empty_lebs;
+ int taken_empty_lebs;
+ int idx_lebs;
+ long long total_free;
+ long long total_dirty;
+ long long total_used;
+ long long total_dead;
+ long long total_dark;
+};
+
+/**
+ * struct ubifs_zbranch - key/coordinate/length branch stored in znodes.
+ * @key: key
+ * @znode: znode address in memory
+ * @lnum: LEB number of the indexing node
+ * @offs: offset of the indexing node within @lnum
+ * @len: target node length
+ */
+struct ubifs_zbranch
+{
+ union ubifs_key key;
+ struct ubifs_znode *znode;
+ int lnum;
+ int offs;
+ int len;
+};
+
+/**
+ * struct ubifs_znode - in-memory representation of an indexing node.
+ * @parent: parent znode or NULL if it is the root
+ * @cnext: next znode to commit
+ * @flags: flags
+ * @time: last access time (seconds)
+ * @level: level of the entry in the TNC tree
+ * @child_cnt: count of child znodes
+ * @iip: index in parent's zbranch array
+ * @alt: lower bound of key range has altered i.e. child inserted at slot 0
+ * @zbranch: array of znode branches (@c->fanout elements)
+ */
+struct ubifs_znode
+{
+ struct ubifs_znode *parent;
+ struct ubifs_znode *cnext;
+ unsigned long flags;
+ unsigned long time;
+ int level;
+ int child_cnt;
+ int iip;
+ int alt;
+#ifdef CONFIG_UBIFS_FS_DEBUG
+ int lnum, offs, len;
+#endif
+ struct ubifs_zbranch zbranch[];
+};
+
+/**
+ * struct ubifs_info - UBIFS file-system description data structure
+ * (per-superblock).
+ *
+ * @highest_inum: highest used inode number
+ * @max_sqnum: current global sequence number
+ *
+ * @jhead_cnt: count of journal heads
+ * @max_bud_bytes: maximum number of bytes allowed in buds
+ *
+ * @zroot: zbranch which points to the root index node and znode
+ * @ihead_lnum: LEB number of index head
+ * @ihead_offs: offset of index head
+ *
+ * @log_lebs: number of logical eraseblocks in the log
+ * @lpt_lebs: number of LEBs used for lprops table
+ * @lpt_first: first LEB of the lprops table area
+ * @lpt_last: last LEB of the lprops table area
+ * @main_lebs: count of LEBs in the main area
+ * @main_first: first LEB of the main area
+ * @default_compr: default compression type
+ * @favor_lzo: favor LZO compression method
+ * @favor_percent: lzo vs. zlib threshold used in case favor LZO
+ *
+ * @key_hash_type: type of the key hash
+ * @key_hash: direntry key hash function
+ * @key_fmt: key format
+ * @key_len: key length
+ * @fanout: fanout of the index tree (number of links per indexing node)
+ *
+ * @min_io_size: minimal input/output unit size
+ * @leb_size: logical eraseblock size in bytes
+ * @leb_cnt: count of logical eraseblocks
+ * @max_leb_cnt: maximum count of logical eraseblocks
+ *
+ * @old_idx_sz: size of index on flash
+ * @lst: lprops statistics
+ *
+ * @dead_wm: LEB dead space watermark
+ * @dark_wm: LEB dark space watermark
+ *
+ * @di: UBI device information
+ * @vi: UBI volume information
+ *
+ * @gc_lnum: LEB number used for garbage collection
+ * @rp_size: reserved pool size
+ *
+ * @space_bits: number of bits needed to record free or dirty space
+ * @lpt_lnum_bits: number of bits needed to record a LEB number in the LPT
+ * @lpt_offs_bits: number of bits needed to record an offset in the LPT
+ * @lpt_spc_bits: number of bits needed to space in the LPT
+ * @pcnt_bits: number of bits needed to record pnode or nnode number
+ * @lnum_bits: number of bits needed to record LEB number
+ * @nnode_sz: size of on-flash nnode
+ * @pnode_sz: size of on-flash pnode
+ * @ltab_sz: size of on-flash LPT lprops table
+ * @lsave_sz: size of on-flash LPT save table
+ * @pnode_cnt: number of pnodes
+ * @nnode_cnt: number of nnodes
+ * @lpt_hght: height of the LPT
+ *
+ * @lpt_lnum: LEB number of the root nnode of the LPT
+ * @lpt_offs: offset of the root nnode of the LPT
+ * @nhead_lnum: LEB number of LPT head
+ * @nhead_offs: offset of LPT head
+ * @big_lpt: flag that LPT is too big to write whole during commit
+ * @space_fixup: flag indicating that free space in LEBs needs to be cleaned up
+ * @lpt_sz: LPT size
+ *
+ * @ltab_lnum: LEB number of LPT's own lprops table
+ * @ltab_offs: offset of LPT's own lprops table
+ * @lpt: lprops table
+ * @ltab: LPT's own lprops table
+ * @lsave_cnt: number of LEB numbers in LPT's save table
+ * @lsave_lnum: LEB number of LPT's save table
+ * @lsave_offs: offset of LPT's save table
+ * @lsave: LPT's save table
+ * @lscan_lnum: LEB number of last LPT scan
+ */
+struct ubifs_info
+{
+ ino_t highest_inum;
+ unsigned long long max_sqnum;
+
+ int jhead_cnt;
+ long long max_bud_bytes;
+
+ struct ubifs_zbranch zroot;
+ int ihead_lnum;
+ int ihead_offs;
+
+ int log_lebs;
+ int lpt_lebs;
+ int lpt_first;
+ int lpt_last;
+ int orph_lebs;
+ int main_lebs;
+ int main_first;
+ int default_compr;
+ int favor_lzo;
+ int favor_percent;
+
+ uint8_t key_hash_type;
+ uint32_t (*key_hash)(const char *str, int len);
+ int key_fmt;
+ int key_len;
+ int fanout;
+
+ int min_io_size;
+ int leb_size;
+ int leb_cnt;
+ int max_leb_cnt;
+
+ unsigned long long old_idx_sz;
+ struct ubifs_lp_stats lst;
+
+ int dead_wm;
+ int dark_wm;
+
+ struct ubi_dev_info di;
+ struct ubi_vol_info vi;
+
+ int gc_lnum;
+ long long rp_size;
+
+ int space_bits;
+ int lpt_lnum_bits;
+ int lpt_offs_bits;
+ int lpt_spc_bits;
+ int pcnt_bits;
+ int lnum_bits;
+ int nnode_sz;
+ int pnode_sz;
+ int ltab_sz;
+ int lsave_sz;
+ int pnode_cnt;
+ int nnode_cnt;
+ int lpt_hght;
+
+ int lpt_lnum;
+ int lpt_offs;
+ int nhead_lnum;
+ int nhead_offs;
+ int big_lpt;
+ int space_fixup;
+ long long lpt_sz;
+
+ int ltab_lnum;
+ int ltab_offs;
+ struct ubifs_lprops *lpt;
+ struct ubifs_lpt_lprops *ltab;
+ int lsave_cnt;
+ int lsave_lnum;
+ int lsave_offs;
+ int *lsave;
+ int lscan_lnum;
+
+};
+
+/**
+ * ubifs_idx_node_sz - return index node size.
+ * @c: the UBIFS file-system description object
+ * @child_cnt: number of children of this index node
+ */
+static inline int ubifs_idx_node_sz(const struct ubifs_info *c, int child_cnt)
+{
+ return UBIFS_IDX_NODE_SZ + (UBIFS_BRANCH_SZ + c->key_len) * child_cnt;
+}
+
+/**
+ * ubifs_idx_branch - return pointer to an index branch.
+ * @c: the UBIFS file-system description object
+ * @idx: index node
+ * @bnum: branch number
+ */
+static inline
+struct ubifs_branch *ubifs_idx_branch(const struct ubifs_info *c,
+ const struct ubifs_idx_node *idx,
+ int bnum)
+{
+ return (struct ubifs_branch *)((void *)idx->branches +
+ (UBIFS_BRANCH_SZ + c->key_len) * bnum);
+}
+
+#endif /* __UBIFS_H__ */