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authorSimon Glass <sjg@chromium.org>2013-04-20 08:42:50 +0000
committerTom Rini <trini@ti.com>2013-05-01 11:17:21 -0400
commita8f6ab5229fb4cd8299df84c8698e128b5125a8e (patch)
tree24212cc0526acebfb6ddfeb08781aa01e019cb90 /fs
parent4ca30d60248b42ac6f949b3e797fbec939387cb0 (diff)
downloadtalos-obmc-uboot-a8f6ab5229fb4cd8299df84c8698e128b5125a8e.tar.gz
talos-obmc-uboot-a8f6ab5229fb4cd8299df84c8698e128b5125a8e.zip
fs: Add support for saving data to filesystems
Add a new method for saving that filesystems can implement. This mirrors the existing load method. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/fs.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/fs/fs.c b/fs/fs.c
index 6f5063c3af..eee7e23392 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -47,6 +47,12 @@ static inline int fs_read_unsupported(const char *filename, void *buf,
return -1;
}
+static inline int fs_write_unsupported(const char *filename, void *buf,
+ int offset, int len)
+{
+ return -1;
+}
+
static inline void fs_close_unsupported(void)
{
}
@@ -57,6 +63,7 @@ struct fstype_info {
disk_partition_t *fs_partition);
int (*ls)(const char *dirname);
int (*read)(const char *filename, void *buf, int offset, int len);
+ int (*write)(const char *filename, void *buf, int offset, int len);
void (*close)(void);
};
@@ -94,6 +101,7 @@ static struct fstype_info fstypes[] = {
.close = fs_close_unsupported,
.ls = fs_ls_unsupported,
.read = fs_read_unsupported,
+ .write = fs_write_unsupported,
},
};
@@ -125,6 +133,7 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
info->close += gd->reloc_off;
info->ls += gd->reloc_off;
info->read += gd->reloc_off;
+ info->write += gd->reloc_off;
}
relocated = 1;
}
@@ -196,6 +205,30 @@ int fs_read(const char *filename, ulong addr, int offset, int len)
return ret;
}
+int fs_write(const char *filename, ulong addr, int offset, int len)
+{
+ struct fstype_info *info = fs_get_info(fs_type);
+ void *buf;
+ int ret;
+
+ /*
+ * 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->write(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 write file %s **\n", filename);
+ ret = -1;
+ }
+ fs_close();
+
+ return ret;
+}
+
int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype, int cmdline_base)
{
@@ -277,3 +310,44 @@ int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
return 0;
}
+
+int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype, int cmdline_base)
+{
+ unsigned long addr;
+ const char *filename;
+ unsigned long bytes;
+ unsigned long pos;
+ int len;
+ unsigned long time;
+
+ if (argc < 6 || argc > 7)
+ return CMD_RET_USAGE;
+
+ if (fs_set_blk_dev(argv[1], argv[2], fstype))
+ return 1;
+
+ filename = argv[3];
+ addr = simple_strtoul(argv[4], NULL, cmdline_base);
+ bytes = simple_strtoul(argv[5], NULL, cmdline_base);
+ if (argc >= 7)
+ pos = simple_strtoul(argv[6], NULL, cmdline_base);
+ else
+ pos = 0;
+
+ time = get_timer(0);
+ len = fs_write(filename, addr, pos, bytes);
+ time = get_timer(time);
+ if (len <= 0)
+ return 1;
+
+ printf("%d bytes written in %lu ms", len, time);
+ if (time > 0) {
+ puts(" (");
+ print_size(len / time * 1000, "/s");
+ puts(")");
+ }
+ puts("\n");
+
+ return 0;
+}
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