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/* Verify capture output from a subprocess.
Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdbool.h>
#include <stdio.h>
#include <support/capture_subprocess.h>
#include <support/check.h>
#include <sys/wait.h>
static void
print_context (const char *context, bool *failed)
{
if (*failed)
/* Do not duplicate message. */
return;
support_record_failure ();
printf ("error: subprocess failed: %s\n", context);
}
static void
print_actual_status (struct support_capture_subprocess *proc)
{
if (WIFEXITED (proc->status))
printf ("error: actual exit status: %d [0x%x]\n",
WEXITSTATUS (proc->status), proc->status);
else if (WIFSIGNALED (proc->status))
printf ("error: actual termination signal: %d [0x%x]\n",
WTERMSIG (proc->status), proc->status);
else
printf ("error: actual undecoded exit status: [0x%x]\n", proc->status);
}
void
support_capture_subprocess_check (struct support_capture_subprocess *proc,
const char *context, int status_or_signal,
int allowed)
{
TEST_VERIFY ((allowed & sc_allow_none)
|| (allowed & sc_allow_stdout)
|| (allowed & sc_allow_stderr));
TEST_VERIFY (!((allowed & sc_allow_none)
&& ((allowed & sc_allow_stdout)
|| (allowed & sc_allow_stderr))));
bool failed = false;
if (status_or_signal >= 0)
{
/* Expect regular termination. */
if (!(WIFEXITED (proc->status)
&& WEXITSTATUS (proc->status) == status_or_signal))
{
print_context (context, &failed);
printf ("error: expected exit status: %d\n", status_or_signal);
print_actual_status (proc);
}
}
else
{
/* status_or_signal < 0. Expect termination by signal. */
if (!(WIFSIGNALED (proc->status)
&& WTERMSIG (proc->status) == -status_or_signal))
{
print_context (context, &failed);
printf ("error: expected termination signal: %d\n",
-status_or_signal);
print_actual_status (proc);
}
}
if (!(allowed & sc_allow_stdout) && proc->out.length != 0)
{
print_context (context, &failed);
printf ("error: unexpected output from subprocess\n");
fwrite (proc->out.buffer, proc->out.length, 1, stdout);
puts ("\n");
}
if (!(allowed & sc_allow_stderr) && proc->err.length != 0)
{
print_context (context, &failed);
printf ("error: unexpected error output from subprocess\n");
fwrite (proc->err.buffer, proc->err.length, 1, stdout);
puts ("\n");
}
}
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