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fs: implement size/fatsize/ext4size

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These commands may be used to determine the size of a file without
actually reading the whole file content into memory. This may be used
to determine if the file will fit into the memory buffer that will
contain it. In particular, the DFU code will use it for this purpose
in the next commit.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Stephen Warren 2014-06-11 12:47:26 -06:00 • committed by Tom Rini
parent e76b933e02
commit cf6598193a
11 changed files with 110 additions and 0 deletions
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14
common/cmd_ext4.c
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@ -42,6 +42,12 @@
#include <usb.h>
#endif
int do_ext4_size(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
return do_size(cmdtp, flag, argc, argv, FS_TYPE_EXT);
}
int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
@ -113,6 +119,14 @@ U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
#endif
U_BOOT_CMD(
ext4size, 4, 0, do_ext4_size,
"determine a file's size",
"<interface> <dev[:part]> <filename>\n"
" - Find file 'filename' from 'dev' on 'interface'\n"
" and determine its size."
);
U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
"list files in a directory (default /)",
"<interface> <dev[:part]> [directory]\n"