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common: Fix gnupg_wait_processes.

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* common/exechelp-posix.c (gnupg_wait_processes): Loop for r_exitcodes
even if we already see an error.

--

Cherry-picked master commit of:
	eeb3da6eb717ed6a1a1069a7611eb37503e8672d

The value stored by waitpid for exit code is encoded;  It requires
decoded by WEXITSTATUS macro, regardless of an error.

For example, when one of processes is already exited and another is
still running, it resulted wrong value of in r_exitcodes[n].

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2017-09-19 12:28:43 +09:00
parent a09bba976d
commit 6e422b5135
1 changed files with 26 additions and 24 deletions
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4
common/exechelp-posix.c
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@ -784,9 +784,11 @@ gnupg_wait_processes (const char **pgmnames, pid_t *pids, size_t count,
}
}
if (ec == 0)
for (i = 0; i < count; i++)
{
if (r_exitcodes[i] == -1)
continue;
if (WIFEXITED (r_exitcodes[i]) && WEXITSTATUS (r_exitcodes[i]) == 127)
{
log_error (_("error running '%s': probably not installed\n"),