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-rw-r--r--fs/fs.c60
1 files changed, 26 insertions, 34 deletions
diff --git a/fs/fs.c b/fs/fs.c
index 66835e2..856d8ba 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -35,14 +35,12 @@ static inline int fs_probe_unsupported(void)
static inline int fs_ls_unsupported(const char *dirname)
{
- printf("** Unrecognized filesystem type **\n");
return -1;
}
static inline int fs_read_unsupported(const char *filename, ulong addr,
int offset, int len)
{
- printf("** Unrecognized filesystem type **\n");
return -1;
}
@@ -189,6 +187,20 @@ static struct fstype_info fstypes[] = {
},
};
+static struct fstype_info *fs_get_info(int fstype)
+{
+ struct fstype_info *info;
+ int i;
+
+ for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
+ if (fstype == info->fstype)
+ return info;
+ }
+
+ /* Return the 'unsupported' sentinel */
+ return info;
+}
+
int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
{
struct fstype_info *info;
@@ -229,17 +241,9 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
static void fs_close(void)
{
- switch (fs_type) {
- case FS_TYPE_FAT:
- fs_close_fat();
- break;
- case FS_TYPE_EXT:
- fs_close_ext();
- break;
- default:
- break;
- }
+ struct fstype_info *info = fs_get_info(fs_type);
+ info->close();
fs_type = FS_TYPE_ANY;
}
@@ -247,17 +251,9 @@ int fs_ls(const char *dirname)
{
int ret;
- switch (fs_type) {
- case FS_TYPE_FAT:
- ret = fs_ls_fat(dirname);
- break;
- case FS_TYPE_EXT:
- ret = fs_ls_ext(dirname);
- break;
- default:
- ret = fs_ls_unsupported(dirname);
- break;
- }
+ struct fstype_info *info = fs_get_info(fs_type);
+
+ ret = info->ls(dirname);
fs_close();
@@ -266,20 +262,16 @@ int fs_ls(const char *dirname)
int fs_read(const char *filename, ulong addr, int offset, int len)
{
+ struct fstype_info *info = fs_get_info(fs_type);
int ret;
- switch (fs_type) {
- case FS_TYPE_FAT:
- ret = fs_read_fat(filename, addr, offset, len);
- break;
- case FS_TYPE_EXT:
- ret = fs_read_ext(filename, addr, offset, len);
- break;
- default:
- ret = fs_read_unsupported(filename, addr, offset, len);
- break;
- }
+ ret = info->read(filename, addr, offset, len);
+ /* If we requested a specific number of bytes, check we got it */
+ if (ret >= 0 && len && ret != len) {
+ printf("** Unable to read file %s **\n", filename);
+ ret = -1;
+ }
fs_close();
return ret;