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locking: validate locking mode

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Ensure 'ret' is always defined and validate 'mode'.
This commit is contained in:
Zdenek Kabelac 2019-05-03 13:01:02 +02:00
parent 3c70ae1803
commit a520b3002c
1 changed files with 3 additions and 0 deletions
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3
lib/locking/locking.c
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@ -361,6 +361,9 @@ static int _lockf_global(struct cmd_context *cmd, const char *mode, int convert)
} else if (!strcmp(mode, "un")) {
ret = lock_vol(cmd, VG_GLOBAL, LCK_UNLOCK, NULL);
cmd->lockf_global_ex = 0;
} else {
log_error(INTERNAL_ERROR "Unknown locking mode %s.", mode);
return 0;
}
return ret;