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96cd0558bc
Signal zero does not terminate a process, so it is safe to use negative values for signal numbers. Adjust libio/tst-vtables-common.c to use this new functionality, instead of determining the termination status for a signal indirectly.
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/* Verify capture output from a subprocess.
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Copyright (C) 2017-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdbool.h>
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#include <stdio.h>
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#include <support/capture_subprocess.h>
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#include <support/check.h>
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#include <sys/wait.h>
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static void
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print_context (const char *context, bool *failed)
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{
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if (*failed)
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/* Do not duplicate message. */
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return;
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support_record_failure ();
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printf ("error: subprocess failed: %s\n", context);
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}
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static void
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print_actual_status (struct support_capture_subprocess *proc)
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{
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if (WIFEXITED (proc->status))
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printf ("error: actual exit status: %d [0x%x]\n",
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WEXITSTATUS (proc->status), proc->status);
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else if (WIFSIGNALED (proc->status))
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printf ("error: actual termination signal: %d [0x%x]\n",
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WTERMSIG (proc->status), proc->status);
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else
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printf ("error: actual undecoded exit status: [0x%x]\n", proc->status);
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}
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void
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support_capture_subprocess_check (struct support_capture_subprocess *proc,
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const char *context, int status_or_signal,
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int allowed)
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{
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TEST_VERIFY ((allowed & sc_allow_none)
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|| (allowed & sc_allow_stdout)
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|| (allowed & sc_allow_stderr));
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TEST_VERIFY (!((allowed & sc_allow_none)
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&& ((allowed & sc_allow_stdout)
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|| (allowed & sc_allow_stderr))));
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bool failed = false;
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if (status_or_signal >= 0)
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{
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/* Expect regular termination. */
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if (!(WIFEXITED (proc->status)
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&& WEXITSTATUS (proc->status) == status_or_signal))
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{
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print_context (context, &failed);
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printf ("error: expected exit status: %d\n", status_or_signal);
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print_actual_status (proc);
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}
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}
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else
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{
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/* status_or_signal < 0. Expect termination by signal. */
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if (!(WIFSIGNALED (proc->status)
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&& WTERMSIG (proc->status) == -status_or_signal))
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{
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print_context (context, &failed);
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printf ("error: expected termination signal: %d\n",
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-status_or_signal);
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print_actual_status (proc);
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}
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}
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if (!(allowed & sc_allow_stdout) && proc->out.length != 0)
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{
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print_context (context, &failed);
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printf ("error: unexpected output from subprocess\n");
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fwrite (proc->out.buffer, proc->out.length, 1, stdout);
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puts ("\n");
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}
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if (!(allowed & sc_allow_stderr) && proc->err.length != 0)
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{
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print_context (context, &failed);
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printf ("error: unexpected error output from subprocess\n");
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fwrite (proc->err.buffer, proc->err.length, 1, stdout);
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puts ("\n");
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}
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}
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