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cgpt_wrapper: Print error if execv() fails.

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This shows an error message when cgpt.bin failed to run, with its
reason. Without this patch, "cgpt" would just fail and return -1 in
that case making it difficult to know the reason of the failure.

BUG=chrome-os-partner:36061
TEST=replaced this binary in storm recovery initramfs 6699.0.0 and it
shows the error message if cgpt.bin is not installed.
BRANCH=None

Change-Id: I3ffaba5a63c491ac7d5b16086d5ae21005f40317
Reviewed-on: https://chromium-review.googlesource.com/251868
Reviewed-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
Trybot-Ready: Alex Deymo <deymo@chromium.org>
Tested-by: Alex Deymo <deymo@chromium.org>
This commit is contained in:
Alex Deymo
2015-02-21 01:10:30 -08:00
committed by ChromeOS Commit Bot
parent 317bb498a6
commit 3fec0e47bd
1 changed files with 5 additions and 1 deletions
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6
cgpt/cgpt_wrapper.c
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@@ -6,6 +6,7 @@
* device is an MTD device, this utility will read the GPT structures from
* FMAP, invokes "cgpt" on that, and writes the result back to NOR flash. */
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
@@ -171,5 +172,8 @@ int main(int argc, const char *argv[]) {
return -1;
}
argv[0] = real_cgpt;
return execv(argv[0], (char * const *)argv);
if (execv(argv[0], (char * const *)argv) == -1) {
err(-2, "execv(%s) failed", real_cgpt);
}
return -2;
}