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Diffstat (limited to 'posix/tst-spawn.c')
| -rw-r--r-- | posix/tst-spawn.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/posix/tst-spawn.c b/posix/tst-spawn.c new file mode 100644 index 0000000000..4bc94e0544 --- /dev/null +++ b/posix/tst-spawn.c @@ -0,0 +1,275 @@ +/* Tests for spawn. + Copyright (C) 2000 Free Software Foundation, Inc. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <spawn.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wait.h> +#include <sys/param.h> + + +/* Nonzero if the program gets called via `exec'. */ +static int restart; + + +#define CMDLINE_OPTIONS \ + { "restart", no_argument, &restart, 1 }, + +/* Prototype for our test function. */ +extern void do_prepare (int argc, char *argv[]); +extern int do_test (int argc, char *argv[]); + +/* We have a preparation function. */ +#define PREPARE do_prepare + +#include "../test-skeleton.c" + + +/* Name of the temporary files. */ +static char *name1; +static char *name2; +static char *name3; + +/* The contents of our files. */ +static const char fd1string[] = "This file should get closed"; +static const char fd2string[] = "This file should stay opened"; +static const char fd3string[] = "This file will be opened"; + + +/* We have a preparation function. */ +void +do_prepare (int argc, char *argv[]) +{ + char name_len; + + name_len = strlen (test_dir); + name1 = (char *) malloc (name_len + sizeof ("/spawnXXXXXX")); + mempcpy (mempcpy (name1, test_dir, name_len), + "/spawnXXXXXX", sizeof ("/spawnXXXXXX")); + add_temp_file (name1); + + name2 = (char *) malloc (name_len + sizeof ("/spawnXXXXXX")); + mempcpy (mempcpy (name2, test_dir, name_len), + "/spawnXXXXXX", sizeof ("/spawnXXXXXX")); + add_temp_file (name2); + + name3 = (char *) malloc (name_len + sizeof ("/spawnXXXXXX")); + mempcpy (mempcpy (name3, test_dir, name_len), + "/spawnXXXXXX", sizeof ("/spawnXXXXXX")); + add_temp_file (name3); +} + + +static int +handle_restart (const char *fd1s, const char *fd2s, const char *fd3s, + const char *fd4s, const char *name) +{ + char buf[100]; + int fd1; + int fd2; + int fd3; + int fd4; + + /* First get the descriptors. */ + fd1 = atol (fd1s); + fd2 = atol (fd2s); + fd3 = atol (fd3s); + fd4 = atol (fd4s); + + /* Sanity check. */ + if (fd1 == fd2) + error (EXIT_FAILURE, 0, "value of fd1 and fd2 is the same"); + if (fd1 == fd3) + error (EXIT_FAILURE, 0, "value of fd1 and fd3 is the same"); + if (fd1 == fd4) + error (EXIT_FAILURE, 0, "value of fd1 and fd4 is the same"); + if (fd2 == fd3) + error (EXIT_FAILURE, 0, "value of fd2 and fd3 is the same"); + if (fd2 == fd4) + error (EXIT_FAILURE, 0, "value of fd2 and fd4 is the same"); + if (fd3 == fd4) + error (EXIT_FAILURE, 0, "value of fd3 and fd4 is the same"); + + /* First the easy part: read from the file descriptor which is + supposed to be open. */ + if (lseek (fd2, 0, SEEK_CUR) != strlen (fd2string)) + error (EXIT_FAILURE, errno, "file 2 not in right position"); + /* The duped descriptor must have the same position. */ + if (lseek (fd4, 0, SEEK_CUR) != strlen (fd2string)) + error (EXIT_FAILURE, errno, "file 4 not in right position"); + if (lseek (fd2, 0, SEEK_SET) != 0) + error (EXIT_FAILURE, 0, "cannot reset position in file 2"); + if (lseek (fd4, 0, SEEK_CUR) != 0) + error (EXIT_FAILURE, errno, "file 4 not set back, too"); + if (read (fd2, buf, sizeof buf) != strlen (fd2string)) + error (EXIT_FAILURE, 0, "cannot read file 2"); + if (memcmp (fd2string, buf, strlen (fd2string)) != 0) + error (EXIT_FAILURE, 0, "file 2 does not match"); + + /* Now read from the third file. */ + if (read (fd3, buf, sizeof buf) != strlen (fd3string)) + error (EXIT_FAILURE, 0, "cannot read file 3"); + if (memcmp (fd3string, buf, strlen (fd3string)) != 0) + error (EXIT_FAILURE, 0, "file 3 does not match"); + /* Try to write to the file. This should not be allowed. */ + if (write (fd3, "boo!", 4) != -1 || errno != EBADF) + error (EXIT_FAILURE, 0, "file 3 is writable"); + + /* Now try to read the first file. First make sure it is not opened. */ + if (lseek (fd1, 0, SEEK_CUR) != (off_t) -1 || errno != EBADF) + error (EXIT_FAILURE, 0, "file 1 (%d) is not closed", fd1); + + /* Now open the file and read it. */ + fd1 = open (name, O_RDONLY); + if (fd1 == -1) + error (EXIT_FAILURE, errno, + "cannot open first file \"%s\" for verification", name); + + if (read (fd1, buf, sizeof buf) != strlen (fd1string)) + error (EXIT_FAILURE, errno, "cannot read file 1"); + if (memcmp (fd1string, buf, strlen (fd1string)) != 0) + error (EXIT_FAILURE, 0, "file 1 does not match"); + + return 0; +} + + +int +do_test (int argc, char *argv[]) +{ + pid_t pid; + int fd1; + int fd2; + int fd3; + int fd4; + int status; + posix_spawn_file_actions_t actions; + char fd1name[18]; + char fd2name[18]; + char fd3name[18]; + char fd4name[18]; + char *spargv[12]; + + /* We must have + - five parameters left of called initially + + -- + + path for ld.so + + "--library-path" + + the library path + + the application name + - seven parameters left if called through re-execution + + --direct + + --restart + + file descriptor number which is supposed to be closed + + the open file descriptor + + the newly opened file descriptor + + thhe duped second descriptor + + the name of the closed descriptor + */ + if (argc != (restart ? 8 : 6)) + error (EXIT_FAILURE, 0, "wrong number of arguments (%d)", argc); + + if (restart) + return handle_restart (argv[3], argv[4], argv[5], argv[6], argv[7]); + + /* Prepare the test. We are creating two files: one which file descriptor + will be marked with FD_CLOEXEC, another which is not. */ + + /* Open our test files. */ + fd1 = mkstemp (name1); + if (fd1 == -1) + error (EXIT_FAILURE, errno, "cannot open test file `%s'", name1); + fd2 = mkstemp (name2); + if (fd2 == -1) + error (EXIT_FAILURE, errno, "cannot open test file `%s'", name2); + fd3 = mkstemp (name3); + if (fd3 == -1) + error (EXIT_FAILURE, errno, "cannot open test file `%s'", name3); + + /* Write something in the files. */ + if (write (fd1, fd1string, strlen (fd1string)) != strlen (fd1string)) + error (EXIT_FAILURE, errno, "cannot write to first file"); + if (write (fd2, fd2string, strlen (fd2string)) != strlen (fd2string)) + error (EXIT_FAILURE, errno, "cannot write to second file"); + if (write (fd3, fd3string, strlen (fd3string)) != strlen (fd3string)) + error (EXIT_FAILURE, errno, "cannot write to third file"); + + /* Close the third file. It'll be opened by `spawn'. */ + close (fd3); + + /* Tell `spawn' what to do. */ + if (posix_spawn_file_actions_init (&actions) != 0) + error (EXIT_FAILURE, errno, "posix_spawn_file_actions_init"); + /* Close `fd1'. */ + if (posix_spawn_file_actions_addclose (&actions, fd1) != 0) + error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addclose"); + /* We want to open the third file. */ + if (posix_spawn_file_actions_addopen (&actions, fd3, name3, + O_RDONLY, 0666) != 0) + error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addopen"); + /* We dup the second descriptor. */ + fd4 = MAX (2, MAX (fd1, MAX (fd2, fd3))) + 1; + if (posix_spawn_file_actions_adddup2 (&actions, fd2, fd4) != 0) + error (EXIT_FAILURE, errno, "posix_spawn_file_actions_adddup2"); + + /* Now spawn the process. */ + snprintf (fd1name, sizeof fd1name, "%d", fd1); + snprintf (fd2name, sizeof fd2name, "%d", fd2); + snprintf (fd3name, sizeof fd3name, "%d", fd3); + snprintf (fd4name, sizeof fd4name, "%d", fd4); + + spargv[0] = argv[2]; + spargv[1] = argv[3]; + spargv[2] = argv[4]; + spargv[3] = argv[5]; + spargv[4] = (char *) "--direct"; + spargv[5] = (char *) "--restart"; + spargv[6] = fd1name; + spargv[7] = fd2name; + spargv[8] = fd3name; + spargv[9] = fd4name; + spargv[10] = name1; + spargv[11] = NULL; + + if (posix_spawn (&pid, argv[2], &actions, NULL, spargv, environ) != 0) + error (EXIT_FAILURE, errno, "posix_spawn"); + + /* Cleanup. */ + if (posix_spawn_file_actions_destroy (&actions) != 0) + error (EXIT_FAILURE, errno, "posix_spawn_file_actions_destroy"); + + /* Wait for the child. */ + if (waitpid (pid, &status, 0) != pid) + error (EXIT_FAILURE, errno, "wrong child"); + + if (WTERMSIG (status) != 0) + error (EXIT_FAILURE, 0, "Child terminated incorrectly"); + status = WEXITSTATUS (status); + + /* Remove the test files. */ + unlink (name1); + unlink (name2); + unlink (name3); + + return status; +} |