diff options
Diffstat (limited to 'posix')
-rw-r--r-- | posix/Makefile | 2 | ||||
-rw-r--r-- | posix/tst-fexecve.c | 88 |
2 files changed, 89 insertions, 1 deletions
diff --git a/posix/Makefile b/posix/Makefile index 7188cba04c..7f77b07dfa 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -93,7 +93,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \ tst-fnmatch3 bug-regex36 tst-getaddrinfo5 \ tst-posix_spawn-fd tst-posix_spawn-setsid \ tst-posix_fadvise tst-posix_fadvise64 \ - tst-sysconf-empty-chroot tst-glob_symlinks + tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve tests-internal := bug-regex5 bug-regex20 bug-regex33 \ tst-rfc3484 tst-rfc3484-2 tst-rfc3484-3 xtests := bug-ga2 diff --git a/posix/tst-fexecve.c b/posix/tst-fexecve.c new file mode 100644 index 0000000000..2409102e21 --- /dev/null +++ b/posix/tst-fexecve.c @@ -0,0 +1,88 @@ +/* Copyright (C) 2017 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/>. */ + +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> +#include <sys/wait.h> + +#include <support/check.h> + +/* Try executing "/bin/sh -c true", using FD opened on /bin/sh. */ +static int +try_fexecve (int fd) +{ + pid_t pid = fork (); + + if (pid == 0) + { + static const char *const argv[] = { + "/bin/sh", "-c", "true", NULL + }; + fexecve (fd, (char *const *) argv, environ); + _exit (errno); + } + if (pid < 0) + FAIL_RET ("fork failed: %m"); + + pid_t termpid; + int status; + termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)); + if (termpid == -1) + FAIL_RET ("waitpid failed: %m"); + if (termpid != pid) + FAIL_RET ("waitpid returned %ld != %ld", + (long int) termpid, (long int) pid); + if (!WIFEXITED (status)) + FAIL_RET ("child hasn't exited normally"); + + /* If fexecve is unimplemented mark this test as UNSUPPORTED. */ + if (WEXITSTATUS (status) == ENOSYS) + FAIL_UNSUPPORTED ("fexecve is unimplemented"); + + if (WEXITSTATUS (status) != 0) + { + errno = WEXITSTATUS (status); + FAIL_RET ("fexecve failed: %m"); + } + return 0; +} + +static int +do_test (void) +{ + int fd; + int ret; + + fd = open ("/bin/sh", O_RDONLY); + if (fd < 0) + FAIL_UNSUPPORTED ("/bin/sh cannot be opened: %m"); + ret = try_fexecve (fd); + close (fd); + +#ifdef O_PATH + fd = open ("/bin/sh", O_RDONLY | O_PATH); + if (fd < 0) + FAIL_UNSUPPORTED ("/bin/sh cannot be opened (O_PATH): %m"); + ret |= try_fexecve (fd); + close (fd); +#endif + + return ret; +} + +#include <support/test-driver.c> |