mirror of
https://github.com/morgan9e/systemd
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39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "exec-util.h"
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#include "fd-util.h"
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#include "log.h"
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#include "main-func.h"
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#include "strv.h"
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#include "tests.h"
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/* This program can be used to call programs through fexecve / execveat(…, "", …, AT_EMPTY_PATH),
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* when compiled with -Dfexecve=true, and the fallback paths, when -Dfexecve=false.
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*
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* Example:
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* $ strace -e execveat build/test-execve /bin/grep Name /proc/self/status
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* execveat(3, "", ["/bin/grep", "Name", "/proc/self/status"], NULL, AT_EMPTY_PATH) = 0
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* Name: 3
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*
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* FIXME: use the new kernel api to set COMM properly when the kernel makes that available.
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* C.f. ceedbf8185fc7593366679f02d31da63af8c4bd1.
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*/
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static int run(int argc, char **argv) {
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int r;
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test_setup_logging(LOG_DEBUG);
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char **args = strv_skip(argv, 1) ?: STRV_MAKE("/bin/true");
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_cleanup_close_ int fd = open(args[0], O_RDONLY | O_CLOEXEC);
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if (fd < 0)
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return log_error_errno(errno, "open(%s) failed: %m", args[0]);
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r = fexecve_or_execve(fd, args[0], args, NULL);
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assert_se(r < 0);
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return log_error_errno(r, "fexecve_or_execve(%s) failed: %m", args[0]);
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}
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DEFINE_MAIN_FUNCTION(run);
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