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-rw-r--r--fs/fs.c241
1 files changed, 94 insertions, 147 deletions
diff --git a/fs/fs.c b/fs/fs.c
index 023e7ef16a..6f5063c3af 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -20,6 +20,8 @@
#include <ext4fs.h>
#include <fat.h>
#include <fs.h>
+#include <sandboxfs.h>
+#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -27,145 +29,103 @@ static block_dev_desc_t *fs_dev_desc;
static disk_partition_t fs_partition;
static int fs_type = FS_TYPE_ANY;
-static inline int fs_ls_unsupported(const char *dirname)
+static inline int fs_probe_unsupported(block_dev_desc_t *fs_dev_desc,
+ disk_partition_t *fs_partition)
{
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;
-}
-
-#ifdef CONFIG_FS_FAT
-static int fs_probe_fat(void)
-{
- 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, ulong addr, int offset, int len)
-{
- int len_read;
-
- len_read = file_fat_read_at(filename, offset,
- (unsigned char *)addr, 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)
+static inline int fs_ls_unsupported(const char *dirname)
{
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(void)
-{
- 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, ulong addr, 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((char *)addr, 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)
+static inline int fs_read_unsupported(const char *filename, void *buf,
+ int offset, int len)
{
return -1;
}
-static inline void fs_close_ext(void)
+static inline void fs_close_unsupported(void)
{
}
-#define fs_ls_ext fs_ls_unsupported
-#define fs_read_ext fs_read_unsupported
-#endif
-
-static struct {
+struct fstype_info {
int fstype;
- int (*probe)(void);
-} fstypes[] = {
+ int (*probe)(block_dev_desc_t *fs_dev_desc,
+ disk_partition_t *fs_partition);
+ int (*ls)(const char *dirname);
+ int (*read)(const char *filename, void *buf, int offset, int len);
+ void (*close)(void);
+};
+
+static struct fstype_info fstypes[] = {
+#ifdef CONFIG_FS_FAT
{
.fstype = FS_TYPE_FAT,
- .probe = fs_probe_fat,
+ .probe = fat_set_blk_dev,
+ .close = fat_close,
+ .ls = file_fat_ls,
+ .read = fat_read_file,
},
+#endif
+#ifdef CONFIG_FS_EXT4
{
.fstype = FS_TYPE_EXT,
- .probe = fs_probe_ext,
+ .probe = ext4fs_probe,
+ .close = ext4fs_close,
+ .ls = ext4fs_ls,
+ .read = ext4_read_file,
+ },
+#endif
+#ifdef CONFIG_SANDBOX
+ {
+ .fstype = FS_TYPE_SANDBOX,
+ .probe = sandbox_fs_set_blk_dev,
+ .close = sandbox_fs_close,
+ .ls = sandbox_fs_ls,
+ .read = fs_read_sandbox,
+ },
+#endif
+ {
+ .fstype = FS_TYPE_ANY,
+ .probe = fs_probe_unsupported,
+ .close = fs_close_unsupported,
+ .ls = fs_ls_unsupported,
+ .read = fs_read_unsupported,
},
};
+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;
int part, i;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
static int relocated;
if (!relocated) {
- for (i = 0; i < ARRAY_SIZE(fstypes); i++)
- fstypes[i].probe += gd->reloc_off;
+ for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
+ i++, info++) {
+ info->probe += gd->reloc_off;
+ info->close += gd->reloc_off;
+ info->ls += gd->reloc_off;
+ info->read += gd->reloc_off;
+ }
relocated = 1;
}
#endif
@@ -175,32 +135,25 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
if (part < 0)
return -1;
- for (i = 0; i < ARRAY_SIZE(fstypes); i++) {
- if ((fstype != FS_TYPE_ANY) && (fstype != fstypes[i].fstype))
+ for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
+ if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
+ fstype != info->fstype)
continue;
- if (!fstypes[i].probe()) {
- fs_type = fstypes[i].fstype;
+ if (!info->probe(fs_dev_desc, &fs_partition)) {
+ fs_type = info->fstype;
return 0;
}
}
- printf("** Unrecognized filesystem type **\n");
return -1;
}
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;
}
@@ -209,18 +162,11 @@ 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_type = FS_TYPE_ANY;
fs_close();
return ret;
@@ -228,20 +174,23 @@ 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);
+ void *buf;
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;
- }
+ /*
+ * We don't actually know how many bytes are being read, since len==0
+ * means read the whole file.
+ */
+ buf = map_sysmem(addr, len);
+ ret = info->read(filename, buf, offset, len);
+ unmap_sysmem(buf);
+ /* 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;
@@ -256,7 +205,6 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
unsigned long bytes;
unsigned long pos;
int len_read;
- char buf[12];
unsigned long time;
if (argc < 2)
@@ -308,8 +256,7 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
}
puts("\n");
- sprintf(buf, "0x%x", len_read);
- setenv("filesize", buf);
+ setenv_hex("filesize", len_read);
return 0;
}
generated by cgit (git 2.34.1) at 2025-01-03 22:33:03 +0000