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fs: Move ls and read methods into ext4, fat

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It doesn't make a lot of sense to have these methods in fs.c. They are
filesystem-specific, not generic code. Add each to the relevant
filesystem and remove the associated #ifdefs in fs.c.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
This commit is contained in:
Simon Glass 2012-12-26 09:53:33 +00:00 • committed by Tom Rini
parent 117e050727
commit e6d5241534
5 changed files with 67 additions and 110 deletions
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37
fs/ext4/ext4fs.c
View file

@ -191,3 +191,40 @@ int ext4fs_read(char *buf, unsigned len)
return ext4fs_read_file(ext4fs_file, 0, len, buf);
}
int ext4fs_probe(block_dev_desc_t *fs_dev_desc,
disk_partition_t *fs_partition)
{
ext4fs_set_blk_dev(fs_dev_desc, fs_partition);
if (!ext4fs_mount(fs_partition->size)) {
ext4fs_close();
return -1;
}
return 0;
}
int ext4_read_file(const char *filename, void *buf, int offset, int len)
{
int file_len;
int len_read;
if (offset != 0) {
printf("** Cannot support non-zero offset **\n");
return -1;
}
file_len = ext4fs_open(filename);
if (file_len < 0) {
printf("** File not found %s **\n", filename);
return -1;
}
if (len == 0)
len = file_len;
len_read = ext4fs_read(buf, len);
return len_read;
}

17
fs/fat/fat.c
View file

@ -1260,3 +1260,20 @@ long file_fat_read(const char *filename, void *buffer, unsigned long maxsize)
{
return file_fat_read_at(filename, 0, buffer, maxsize);
}
int fat_read_file(const char *filename, void *buf, int offset, int len)
{
int len_read;
len_read = file_fat_read_at(filename, offset, buf, len);
if (len_read == -1) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
return len_read;
}
void fat_close(void)
{
}

118
fs/fs.c
View file

@ -50,110 +50,6 @@ static inline void fs_close_unsupported(void)
{
}
#ifdef CONFIG_FS_FAT
static int fs_probe_fat(block_dev_desc_t *fs_dev_desc,
disk_partition_t *fs_partition)
{
return fat_set_blk_dev(fs_dev_desc, fs_partition);
}
static void fs_close_fat(void)
{
}
#define fs_ls_fat file_fat_ls
static int fs_read_fat(const char *filename, void *buf, int offset, int len)
{
int len_read;
len_read = file_fat_read_at(filename, offset, buf, len);
if (len_read == -1) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
return len_read;
}
#else
static inline int fs_probe_fat(void)
{
return -1;
}
static inline void fs_close_fat(void)
{
}
#define fs_ls_fat fs_ls_unsupported
#define fs_read_fat fs_read_unsupported
#endif
#ifdef CONFIG_FS_EXT4
static int fs_probe_ext(block_dev_desc_t *fs_dev_desc,
disk_partition_t *fs_partition)
{
ext4fs_set_blk_dev(fs_dev_desc, fs_partition);
if (!ext4fs_mount(fs_partition->size)) {
ext4fs_close();
return -1;
}
return 0;
}
static void fs_close_ext(void)
{
ext4fs_close();
}
#define fs_ls_ext ext4fs_ls
static int fs_read_ext(const char *filename, void *buf, int offset, int len)
{
int file_len;
int len_read;
if (offset != 0) {
printf("** Cannot support non-zero offset **\n");
return -1;
}
file_len = ext4fs_open(filename);
if (file_len < 0) {
printf("** File not found %s **\n", filename);
ext4fs_close();
return -1;
}
if (len == 0)
len = file_len;
len_read = ext4fs_read(buf, len);
ext4fs_close();
if (len_read != len) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
return len_read;
}
#else
static inline int fs_probe_ext(void)
{
return -1;
}
static inline void fs_close_ext(void)
{
}
#define fs_ls_ext fs_ls_unsupported
#define fs_read_ext fs_read_unsupported
#endif
struct fstype_info {
int fstype;
int (*probe)(block_dev_desc_t *fs_dev_desc,
@ -167,19 +63,19 @@ static struct fstype_info fstypes[] = {
#ifdef CONFIG_FS_FAT
{
.fstype = FS_TYPE_FAT,
.probe = fs_probe_fat,
.close = fs_close_fat,
.probe = fat_set_blk_dev,
.close = fat_close,
.ls = file_fat_ls,
.read = fs_read_fat,
.read = fat_read_file,
},
#endif
#ifdef CONFIG_FS_EXT4
{
.fstype = FS_TYPE_EXT,
.probe = fs_probe_ext,
.close = fs_close_ext,
.probe = ext4fs_probe,
.close = ext4fs_close,
.ls = ext4fs_ls,
.read = fs_read_ext,
.read = ext4_read_file,
},
#endif
{
@ -248,6 +144,7 @@ static void fs_close(void)
struct fstype_info *info = fs_get_info(fs_type);
info->close();
fs_type = FS_TYPE_ANY;
}
@ -259,6 +156,7 @@ int fs_ls(const char *dirname)
ret = info->ls(dirname);
fs_type = FS_TYPE_ANY;
fs_close();
return ret;

3
include/ext4fs.h
View file

@ -138,4 +138,7 @@ void ext4fs_free_node(struct ext2fs_node *node, struct ext2fs_node *currroot);
int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf);
void ext4fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
long int read_allocated_block(struct ext2_inode *inode, int fileblock);
int ext4fs_probe(block_dev_desc_t *fs_dev_desc,
disk_partition_t *fs_partition);
int ext4_read_file(const char *filename, void *buf, int offset, int len);
#endif

2
include/fat.h
View file

@ -213,4 +213,6 @@ int fat_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
int fat_register_device(block_dev_desc_t *dev_desc, int part_no);
int file_fat_write(const char *filename, void *buffer, unsigned long maxsize);
int fat_read_file(const char *filename, void *buf, int offset, int len);
void fat_close(void);
#endif /* _FAT_H_ */