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| author | Patrick Georgi <patrick@georgi-clan.de> | 2014-08-09 17:02:00 +0200 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2014-08-10 08:20:09 +0200 |
| commit | c5d179123df5e7d8b72e613935b9e1bd278886f9 (patch) | |
| tree | 1022f0d6efceef1b0aee25e80f8b8ea86b1ed4f8 /util/nvramtool/cli | |
| parent | b6239b81aa3a3ac9cb08aa70d1f1179e1619f429 (diff) | |
nvramtool: check for successful seek
Otherwise the following write might end up anywhere.
Change-Id: Ie42d984824e9308bd58b8bb905b6ea823543adf0
Found-by: Coverity Scan
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6560
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'util/nvramtool/cli')
| -rw-r--r-- | util/nvramtool/cli/nvramtool.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/util/nvramtool/cli/nvramtool.c b/util/nvramtool/cli/nvramtool.c index d5acc5838e..bdfaaff26d 100644 --- a/util/nvramtool/cli/nvramtool.c +++ b/util/nvramtool/cli/nvramtool.c @@ -163,8 +163,8 @@ int main(int argc, char *argv[]) } if (fd_stat.st_size < CMOS_SIZE) { - lseek(fd, CMOS_SIZE - 1, SEEK_SET); - if (write(fd, "\0", 1) != 1) { + if ((lseek(fd, CMOS_SIZE - 1, SEEK_SET) == -1) || + (write(fd, "\0", 1) != 1)) { fprintf(stderr, "Unable to extended '%s' to its full size.\n", nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param); exit(1); |