aboutsummaryrefslogtreecommitdiff
path: root/lib/sqfs
diff options
context:
space:
mode:
Diffstat (limited to 'lib/sqfs')
-rw-r--r--lib/sqfs/Makemodule.am4
-rw-r--r--lib/sqfs/io.c146
-rw-r--r--lib/sqfs/io_file.c151
3 files changed, 170 insertions, 131 deletions
diff --git a/lib/sqfs/Makemodule.am b/lib/sqfs/Makemodule.am
index b58a28b..7d228a4 100644
--- a/lib/sqfs/Makemodule.am
+++ b/lib/sqfs/Makemodule.am
@@ -7,14 +7,14 @@ LIBSQFS_HEARDS = include/sqfs/data.h include/sqfs/meta_writer.h \
include/sqfs/error.h include/sqfs/io.h
libsquashfs_la_SOURCES = $(LIBSQFS_HEARDS) lib/sqfs/id_table.c lib/sqfs/super.c
-libsquashfs_la_SOURCES += lib/sqfs/readdir.c lib/sqfs/io.c lib/sqfs/xattr.c
+libsquashfs_la_SOURCES += lib/sqfs/readdir.c lib/sqfs/io_file.c lib/sqfs/xattr.c
libsquashfs_la_SOURCES += lib/sqfs/write_table.c lib/sqfs/meta_writer.c
libsquashfs_la_SOURCES += lib/sqfs/read_super.c lib/sqfs/meta_reader.c
libsquashfs_la_SOURCES += lib/sqfs/read_inode.c lib/sqfs/write_inode.c
libsquashfs_la_SOURCES += lib/sqfs/dir_writer.c lib/sqfs/xattr_reader.c
libsquashfs_la_SOURCES += lib/sqfs/read_table.c lib/sqfs/comp/compressor.c
libsquashfs_la_SOURCES += lib/sqfs/io_stdin.c lib/sqfs/comp/internal.h
-libsquashfs_la_SOURCES += lib/sqfs/blk_proc/process_block.c
+libsquashfs_la_SOURCES += lib/sqfs/blk_proc/process_block.c lib/sqfs/io.c
libsquashfs_la_SOURCES += lib/sqfs/blk_proc/internal.h
libsquashfs_la_CPPFLAGS = $(AM_CPPFLAGS)
libsquashfs_la_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) $(ZLIB_CFLAGS)
diff --git a/lib/sqfs/io.c b/lib/sqfs/io.c
index f8773d0..4afb489 100644
--- a/lib/sqfs/io.c
+++ b/lib/sqfs/io.c
@@ -9,143 +9,31 @@
#include "sqfs/io.h"
#include "sqfs/error.h"
+#include "sqfs/block_processor.h"
+#include "util.h"
#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-
-typedef struct {
- sqfs_file_t base;
-
- uint64_t size;
- int fd;
-} sqfs_file_stdio_t;
-
-
-static void stdio_destroy(sqfs_file_t *base)
-{
- sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
-
- close(file->fd);
- free(file);
-}
-
-static int stdio_read_at(sqfs_file_t *base, uint64_t offset,
- void *buffer, size_t size)
-{
- sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
- ssize_t ret;
-
- while (size > 0) {
- ret = pread(file->fd, buffer, size, offset);
-
- if (ret < 0) {
- if (errno == EINTR)
- continue;
- return SQFS_ERROR_IO;
- }
-
- if (ret == 0)
- return SQFS_ERROR_OUT_OF_BOUNDS;
-
- buffer = (char *)buffer + ret;
- size -= ret;
- offset += ret;
- }
-
- return 0;
-}
-
-static int stdio_write_at(sqfs_file_t *base, uint64_t offset,
- const void *buffer, size_t size)
+int sqfs_file_create_block(sqfs_file_t *file, uint64_t offset,
+ size_t size, void *user, uint32_t flags,
+ sqfs_block_t **out)
{
- sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
- ssize_t ret;
-
- while (size > 0) {
- ret = pwrite(file->fd, buffer, size, offset);
-
- if (ret < 0) {
- if (errno == EINTR)
- continue;
- return SQFS_ERROR_IO;
- }
+ sqfs_block_t *blk = alloc_flex(sizeof(*blk), 1, size);
+ int err;
- if (ret == 0)
- return SQFS_ERROR_OUT_OF_BOUNDS;
+ if (blk == NULL)
+ return SQFS_ERROR_ALLOC;
- buffer = (const char *)buffer + ret;
- size -= ret;
- offset += ret;
+ err = file->read_at(file, offset, blk->data, size);
+ if (err) {
+ free(blk);
+ return err;
}
- if (offset >= file->size)
- file->size = offset;
+ blk->user = user;
+ blk->size = size;
+ blk->flags = flags;
+ *out = blk;
return 0;
}
-
-static uint64_t stdio_get_size(const sqfs_file_t *base)
-{
- const sqfs_file_stdio_t *file = (const sqfs_file_stdio_t *)base;
-
- return file->size;
-}
-
-static int stdio_truncate(sqfs_file_t *base, uint64_t size)
-{
- sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
-
- if (ftruncate(file->fd, size))
- return SQFS_ERROR_IO;
-
- file->size = size;
- return 0;
-}
-
-
-sqfs_file_t *sqfs_open_file(const char *filename, int flags)
-{
- sqfs_file_stdio_t *file;
- int open_mode, temp;
- sqfs_file_t *base;
-
- if (flags & ~SQFS_FILE_OPEN_ALL_FLAGS) {
- errno = EINVAL;
- return NULL;
- }
-
- file = calloc(1, sizeof(*file));
- base = (sqfs_file_t *)file;
- if (file == NULL)
- return NULL;
-
- if (flags & SQFS_FILE_OPEN_READ_ONLY) {
- open_mode = O_RDONLY;
- } else {
- open_mode = O_CREAT | O_RDWR;
-
- if (flags & SQFS_FILE_OPEN_OVERWRITE) {
- open_mode |= O_TRUNC;
- } else {
- open_mode |= O_EXCL;
- }
- }
-
- file->fd = open(filename, open_mode, 0600);
- if (file->fd < 0) {
- temp = errno;
- free(file);
- errno = temp;
- return NULL;
- }
-
- base->destroy = stdio_destroy;
- base->read_at = stdio_read_at;
- base->write_at = stdio_write_at;
- base->get_size = stdio_get_size;
- base->truncate = stdio_truncate;
- return base;
-}
diff --git a/lib/sqfs/io_file.c b/lib/sqfs/io_file.c
new file mode 100644
index 0000000..b57eddd
--- /dev/null
+++ b/lib/sqfs/io_file.c
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * io_file.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#define SQFS_BUILDING_DLL
+#include "config.h"
+
+#include "sqfs/io.h"
+#include "sqfs/error.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+
+
+typedef struct {
+ sqfs_file_t base;
+
+ uint64_t size;
+ int fd;
+} sqfs_file_stdio_t;
+
+
+static void stdio_destroy(sqfs_file_t *base)
+{
+ sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
+
+ close(file->fd);
+ free(file);
+}
+
+static int stdio_read_at(sqfs_file_t *base, uint64_t offset,
+ void *buffer, size_t size)
+{
+ sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
+ ssize_t ret;
+
+ while (size > 0) {
+ ret = pread(file->fd, buffer, size, offset);
+
+ if (ret < 0) {
+ if (errno == EINTR)
+ continue;
+ return SQFS_ERROR_IO;
+ }
+
+ if (ret == 0)
+ return SQFS_ERROR_OUT_OF_BOUNDS;
+
+ buffer = (char *)buffer + ret;
+ size -= ret;
+ offset += ret;
+ }
+
+ return 0;
+}
+
+static int stdio_write_at(sqfs_file_t *base, uint64_t offset,
+ const void *buffer, size_t size)
+{
+ sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
+ ssize_t ret;
+
+ while (size > 0) {
+ ret = pwrite(file->fd, buffer, size, offset);
+
+ if (ret < 0) {
+ if (errno == EINTR)
+ continue;
+ return SQFS_ERROR_IO;
+ }
+
+ if (ret == 0)
+ return SQFS_ERROR_OUT_OF_BOUNDS;
+
+ buffer = (const char *)buffer + ret;
+ size -= ret;
+ offset += ret;
+ }
+
+ if (offset >= file->size)
+ file->size = offset;
+
+ return 0;
+}
+
+static uint64_t stdio_get_size(const sqfs_file_t *base)
+{
+ const sqfs_file_stdio_t *file = (const sqfs_file_stdio_t *)base;
+
+ return file->size;
+}
+
+static int stdio_truncate(sqfs_file_t *base, uint64_t size)
+{
+ sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
+
+ if (ftruncate(file->fd, size))
+ return SQFS_ERROR_IO;
+
+ file->size = size;
+ return 0;
+}
+
+
+sqfs_file_t *sqfs_open_file(const char *filename, int flags)
+{
+ sqfs_file_stdio_t *file;
+ int open_mode, temp;
+ sqfs_file_t *base;
+
+ if (flags & ~SQFS_FILE_OPEN_ALL_FLAGS) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ file = calloc(1, sizeof(*file));
+ base = (sqfs_file_t *)file;
+ if (file == NULL)
+ return NULL;
+
+ if (flags & SQFS_FILE_OPEN_READ_ONLY) {
+ open_mode = O_RDONLY;
+ } else {
+ open_mode = O_CREAT | O_RDWR;
+
+ if (flags & SQFS_FILE_OPEN_OVERWRITE) {
+ open_mode |= O_TRUNC;
+ } else {
+ open_mode |= O_EXCL;
+ }
+ }
+
+ file->fd = open(filename, open_mode, 0600);
+ if (file->fd < 0) {
+ temp = errno;
+ free(file);
+ errno = temp;
+ return NULL;
+ }
+
+ base->destroy = stdio_destroy;
+ base->read_at = stdio_read_at;
+ base->write_at = stdio_write_at;
+ base->get_size = stdio_get_size;
+ base->truncate = stdio_truncate;
+ return base;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 20:31:16 +0000