From 6152916a95af299e5b3061bbd43418e2b73295d0 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 3 Feb 2014 13:21:00 -0700 Subject: fs: implement infrastructure for an 'exists' function This could be used in scripts such as: if test -e mmc 0:1 /boot/boot.scr; then load mmc 0:1 ${scriptaddr} /boot/boot.scr source ${scriptaddr} fi rather than: if load mmc 0:1 ${scriptaddr} /boot/boot.scr; then source ${scriptaddr} fi This prevents errors being printed by attempts to load non-existent files, which can be important when checking for a large set of files, such as /boot/boot.scr.uimg, /boot/boot.scr, /boot/extlinux.conf, /boot.scr.uimg, /boot.scr, /extlinux.conf. Signed-off-by: Stephen Warren Acked-by: Simon Glass --- include/fs.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include') diff --git a/include/fs.h b/include/fs.h index 97b0094..26de053 100644 --- a/include/fs.h +++ b/include/fs.h @@ -44,6 +44,13 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype); int fs_ls(const char *dirname); /* + * Determine whether a file exists + * + * Returns 1 if the file exists, 0 if it doesn't exist. + */ +int fs_exists(const char *filename); + +/* * Read file "filename" from the partition previously set by fs_set_blk_dev(), * to address "addr", starting at byte offset "offset", and reading "len" * bytes. "offset" may be 0 to read from the start of the file. "len" may be @@ -72,6 +79,8 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); +int file_exists(const char *dev_type, const char *dev_part, const char *file, + int fstype); int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype); -- cgit v1.1