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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-04-30 20:35:37 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-05-02 12:40:06 +0200
commit2196bc61b8ba67c91927ba28538538b89ccf73f1 (patch)
tree7ef4006d078908bef8477adc7844ae015501c5f7 /mkfs/super.c
parent76267654ebd43c1dfa28aa290b0d320df9781b2d (diff)
Move super block init/write code to libsquashfs.a
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'mkfs/super.c')
-rw-r--r--mkfs/super.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/mkfs/super.c b/mkfs/super.c
deleted file mode 100644
index c924b6c..0000000
--- a/mkfs/super.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-#include "mksquashfs.h"
-#include "util.h"
-
-#include <endian.h>
-
-int sqfs_super_init(sqfs_info_t *info)
-{
- unsigned int i;
-
- if (info->opt.blksz & (info->opt.blksz - 1)) {
- fputs("Block size must be a power of 2!\n", stderr);
- return -1;
- }
-
- if (info->opt.blksz < 8192 || info->opt.blksz >= (1 << 24)) {
- fputs("Block size must be between 8k and 1M\n", stderr);
- return -1;
- }
-
- memset(&info->super, 0, sizeof(info->super));
- info->super.magic = SQFS_MAGIC;
- info->super.modification_time = info->opt.def_mtime;
- info->super.block_size = info->opt.blksz;
- info->super.compression_id = info->opt.compressor;
- info->super.flags = SQFS_FLAG_NO_FRAGMENTS | SQFS_FLAG_NO_XATTRS;
- info->super.version_major = SQFS_VERSION_MAJOR;
- info->super.version_minor = SQFS_VERSION_MINOR;
- info->super.bytes_used = sizeof(info->super);
- info->super.id_table_start = 0xFFFFFFFFFFFFFFFFUL;
- info->super.xattr_id_table_start = 0xFFFFFFFFFFFFFFFFUL;
- info->super.inode_table_start = 0xFFFFFFFFFFFFFFFFUL;
- info->super.directory_table_start = 0xFFFFFFFFFFFFFFFFUL;
- info->super.fragment_table_start = 0xFFFFFFFFFFFFFFFFUL;
- info->super.export_table_start = 0xFFFFFFFFFFFFFFFFUL;
-
- for (i = info->opt.blksz; i != 0x01; i >>= 1)
- info->super.block_log += 1;
-
- return 0;
-}
-
-int sqfs_padd_file(sqfs_info_t *info)
-{
- size_t padd_sz = info->super.bytes_used % info->opt.devblksz;
- uint8_t *buffer;
- ssize_t ret;
-
- if (padd_sz == 0)
- return 0;
-
- padd_sz = info->opt.devblksz - padd_sz;
-
- buffer = calloc(1, padd_sz);
- if (buffer == NULL) {
- perror("padding output file to block size");
- return -1;
- }
-
- ret = write_retry(info->outfd, buffer, padd_sz);
-
- if (ret < 0) {
- perror("Error padding squashfs image to page size");
- free(buffer);
- return -1;
- }
-
- if ((size_t)ret < padd_sz) {
- fputs("Truncated write trying to padd squashfs image\n",
- stderr);
- return -1;
- }
-
- free(buffer);
- return 0;
-}
-
-int sqfs_super_write(sqfs_info_t *info)
-{
- sqfs_super_t copy;
- ssize_t ret;
-
- copy.magic = htole32(info->super.magic);
- copy.inode_count = htole32(info->super.inode_count);
- copy.modification_time = htole32(info->super.modification_time);
- copy.block_size = htole32(info->super.block_size);
- copy.fragment_entry_count = htole32(info->super.fragment_entry_count);
- copy.compression_id = htole16(info->super.compression_id);
- copy.block_log = htole16(info->super.block_log);
- copy.flags = htole16(info->super.flags);
- copy.id_count = htole16(info->super.id_count);
- copy.version_major = htole16(info->super.version_major);
- copy.version_minor = htole16(info->super.version_minor);
- copy.root_inode_ref = htole64(info->super.root_inode_ref);
- copy.bytes_used = htole64(info->super.bytes_used);
- copy.id_table_start = htole64(info->super.id_table_start);
- copy.xattr_id_table_start = htole64(info->super.xattr_id_table_start);
- copy.inode_table_start = htole64(info->super.inode_table_start);
- copy.directory_table_start = htole64(info->super.directory_table_start);
- copy.fragment_table_start = htole64(info->super.fragment_table_start);
- copy.export_table_start = htole64(info->super.export_table_start);
-
- if (lseek(info->outfd, 0, SEEK_SET) == (off_t)-1)
- goto fail_seek;
-
- ret = write_retry(info->outfd, &copy, sizeof(copy));
-
- if (ret < 0) {
- perror("squashfs writing super block");
- return -1;
- }
-
- if ((size_t)ret < sizeof(copy)) {
- fputs("squashfs writing super block: truncated write\n",
- stderr);
- return -1;
- }
-
- if (lseek(info->outfd, 0, SEEK_END) == (off_t)-1)
- goto fail_seek;
-
- return 0;
-fail_seek:
- perror("squashfs writing super block: seek on output file");
- return -1;
-}