return -EACCES;
}
+static inline int fs_unlink_unsupported(const char *filename)
+{
+ return -1;
+}
+
+static inline int fs_mkdir_unsupported(const char *dirname)
+{
+ return -1;
+}
+
struct fstype_info {
int fstype;
char *name;
* Is it legal to pass NULL as .probe()'s fs_dev_desc parameter? This
* should be false in most cases. For "virtual" filesystems which
* aren't based on a U-Boot block device (e.g. sandbox), this can be
- * set to true. This should also be true for the dumm entry at the end
+ * set to true. This should also be true for the dummy entry at the end
* of fstypes[], since that is essentially a "virtual" (non-existent)
* filesystem.
*/
int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
/* see fs_closedir() */
void (*closedir)(struct fs_dir_stream *dirs);
+ int (*unlink)(const char *filename);
+ int (*mkdir)(const char *dirname);
};
static struct fstype_info fstypes[] = {
.exists = fat_exists,
.size = fat_size,
.read = fat_read_file,
-#ifdef CONFIG_FAT_WRITE
+#if CONFIG_IS_ENABLED(FAT_WRITE)
.write = file_fat_write,
+ .unlink = fat_unlink,
+ .mkdir = fat_mkdir,
#else
.write = fs_write_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
#endif
.uuid = fs_uuid_unsupported,
.opendir = fat_opendir,
.closedir = fat_closedir,
},
#endif
-#ifdef CONFIG_FS_EXT4
+
+#if CONFIG_IS_ENABLED(FS_EXT4)
{
.fstype = FS_TYPE_EXT,
.name = "ext4",
#endif
.uuid = ext4fs_uuid,
.opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
},
#endif
#ifdef CONFIG_SANDBOX
.write = fs_write_sandbox,
.uuid = fs_uuid_unsupported,
.opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
},
#endif
#ifdef CONFIG_CMD_UBIFS
.write = fs_write_unsupported,
.uuid = fs_uuid_unsupported,
.opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
},
#endif
#ifdef CONFIG_FS_BTRFS
.write = fs_write_unsupported,
.uuid = btrfs_uuid,
.opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
},
#endif
{
.write = fs_write_unsupported,
.uuid = fs_uuid_unsupported,
.opendir = fs_opendir_unsupported,
+ .unlink = fs_unlink_unsupported,
+ .mkdir = fs_mkdir_unsupported,
},
};
for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
if (!info->probe(fs_dev_desc, &fs_partition)) {
fs_type = info->fstype;
+ fs_dev_part = part;
return 0;
}
}
return ret;
}
-int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
- loff_t *actread)
+#ifdef CONFIG_LMB
+/* Check if a file may be read to the given address */
+static int fs_read_lmb_check(const char *filename, ulong addr, loff_t offset,
+ loff_t len, struct fstype_info *info)
+{
+ struct lmb lmb;
+ int ret;
+ loff_t size;
+ loff_t read_len;
+
+ /* get the actual size of the file */
+ ret = info->size(filename, &size);
+ if (ret)
+ return ret;
+ if (offset >= size) {
+ /* offset >= EOF, no bytes will be written */
+ return 0;
+ }
+ read_len = size - offset;
+
+ /* limit to 'len' if it is smaller */
+ if (len && len < read_len)
+ read_len = len;
+
+ lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
+ lmb_dump_all(&lmb);
+
+ if (lmb_alloc_addr(&lmb, addr, read_len) == addr)
+ return 0;
+
+ printf("** Reading file would overwrite reserved memory **\n");
+ return -ENOSPC;
+}
+#endif
+
+static int _fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
+ int do_lmb_check, loff_t *actread)
{
struct fstype_info *info = fs_get_info(fs_type);
void *buf;
int ret;
+#ifdef CONFIG_LMB
+ if (do_lmb_check) {
+ ret = fs_read_lmb_check(filename, addr, offset, len, info);
+ if (ret)
+ return ret;
+ }
+#endif
+
/*
* We don't actually know how many bytes are being read, since len==0
* means read the whole file.
return ret;
}
+int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
+ loff_t *actread)
+{
+ return _fs_read(filename, addr, offset, len, 0, actread);
+}
+
int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
loff_t *actwrite)
{
fs_close();
}
+int fs_unlink(const char *filename)
+{
+ int ret;
+
+ struct fstype_info *info = fs_get_info(fs_type);
+
+ ret = info->unlink(filename);
+
+ fs_type = FS_TYPE_ANY;
+ fs_close();
+
+ return ret;
+}
+
+int fs_mkdir(const char *dirname)
+{
+ int ret;
+
+ struct fstype_info *info = fs_get_info(fs_type);
+
+ ret = info->mkdir(dirname);
+
+ fs_type = FS_TYPE_ANY;
+ fs_close();
+
+ return ret;
+}
int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype)
pos = 0;
time = get_timer(0);
- ret = fs_read(filename, addr, pos, bytes, &len_read);
+ ret = _fs_read(filename, addr, pos, bytes, 1, &len_read);
time = get_timer(time);
if (ret < 0)
return 1;
else
printf("%s\n", info->name);
+ fs_close();
+
return CMD_RET_SUCCESS;
}
+int do_rm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype)
+{
+ if (argc != 4)
+ return CMD_RET_USAGE;
+
+ if (fs_set_blk_dev(argv[1], argv[2], fstype))
+ return 1;
+
+ if (fs_unlink(argv[3]))
+ return 1;
+
+ return 0;
+}
+
+int do_mkdir(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype)
+{
+ int ret;
+
+ if (argc != 4)
+ return CMD_RET_USAGE;
+
+ if (fs_set_blk_dev(argv[1], argv[2], fstype))
+ return 1;
+
+ ret = fs_mkdir(argv[3]);
+ if (ret) {
+ printf("** Unable to create a directory \"%s\" **\n", argv[3]);
+ return 1;
+ }
+
+ return 0;
+}