mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
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.
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
/* Capture output from a subprocess.
|
|
Copyright (C) 2017-2018 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef SUPPORT_CAPTURE_SUBPROCESS_H
|
|
#define SUPPORT_CAPTURE_SUBPROCESS_H
|
|
|
|
#include <support/xmemstream.h>
|
|
|
|
struct support_capture_subprocess
|
|
{
|
|
struct xmemstream out;
|
|
struct xmemstream err;
|
|
int status;
|
|
};
|
|
|
|
/* Invoke CALLBACK (CLOSURE) in a subprocess and capture standard
|
|
output, standard error, and the exit status. The out.buffer and
|
|
err.buffer members in the result are null-terminated strings which
|
|
can be examined by the caller (out.out and err.out are NULL). */
|
|
struct support_capture_subprocess support_capture_subprocess
|
|
(void (*callback) (void *), void *closure);
|
|
|
|
/* Deallocate the subprocess data captured by
|
|
support_capture_subprocess. */
|
|
void support_capture_subprocess_free (struct support_capture_subprocess *);
|
|
|
|
enum support_capture_allow
|
|
{
|
|
/* No output is allowed. */
|
|
sc_allow_none = 0x01,
|
|
/* Output to stdout is permitted. */
|
|
sc_allow_stdout = 0x02,
|
|
/* Output to standard error is permitted. */
|
|
sc_allow_stderr = 0x04,
|
|
};
|
|
|
|
/* Check that the subprocess exited and that only the allowed outputs
|
|
happened. If STATUS_OR_SIGNAL is nonnegative, it is the expected
|
|
(decoded) exit status of the process, as returned by WEXITSTATUS.
|
|
If STATUS_OR_SIGNAL is negative, -STATUS_OR_SIGNAL is the expected
|
|
termination signal, as returned by WTERMSIG. ALLOWED is a
|
|
combination of support_capture_allow flags. Report errors under
|
|
the CONTEXT message. */
|
|
void support_capture_subprocess_check (struct support_capture_subprocess *,
|
|
const char *context,
|
|
int status_or_signal, int allowed)
|
|
__attribute__ ((nonnull (1, 2)));
|
|
|
|
#endif /* SUPPORT_CAPTURE_SUBPROCESS_H */
|