fs: implement infrastructure for an 'exists' function
authorStephen Warren <swarren@nvidia.com>
Mon, 3 Feb 2014 20:21:00 +0000 (13:21 -0700)
committerTom Rini <trini@ti.com>
Wed, 19 Feb 2014 14:47:33 +0000 (09:47 -0500)
commit6152916a95af299e5b3061bbd43418e2b73295d0
tree0d3d5765d342e98e7fff104168144f1050bf16c5
parentbd6fb31fab1523ecac1aaf7af574868a26169dc6
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 <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
fs/fs.c
include/fs.h