89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/* Copyright (C) 2017-2019 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 <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/wait.h>
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#include <support/check.h>
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/* Try executing "/bin/sh -c true", using FD opened on /bin/sh. */
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static int
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try_fexecve (int fd)
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{
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pid_t pid = fork ();
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if (pid == 0)
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{
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static const char *const argv[] = {
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"/bin/sh", "-c", "true", NULL
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};
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fexecve (fd, (char *const *) argv, environ);
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_exit (errno);
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}
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if (pid < 0)
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FAIL_RET ("fork failed: %m");
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pid_t termpid;
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int status;
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termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
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if (termpid == -1)
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FAIL_RET ("waitpid failed: %m");
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if (termpid != pid)
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FAIL_RET ("waitpid returned %ld != %ld",
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(long int) termpid, (long int) pid);
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if (!WIFEXITED (status))
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FAIL_RET ("child hasn't exited normally");
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/* If fexecve is unimplemented mark this test as UNSUPPORTED. */
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if (WEXITSTATUS (status) == ENOSYS)
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FAIL_UNSUPPORTED ("fexecve is unimplemented");
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if (WEXITSTATUS (status) != 0)
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{
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errno = WEXITSTATUS (status);
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FAIL_RET ("fexecve failed: %m");
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}
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return 0;
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}
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static int
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do_test (void)
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{
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int fd;
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int ret;
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fd = open ("/bin/sh", O_RDONLY);
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if (fd < 0)
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FAIL_UNSUPPORTED ("/bin/sh cannot be opened: %m");
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ret = try_fexecve (fd);
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close (fd);
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#ifdef O_PATH
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fd = open ("/bin/sh", O_RDONLY | O_PATH);
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if (fd < 0)
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FAIL_UNSUPPORTED ("/bin/sh cannot be opened (O_PATH): %m");
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ret |= try_fexecve (fd);
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close (fd);
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#endif
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return ret;
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}
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#include <support/test-driver.c>
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