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Diffstat (limited to 'io/tst-fcntl.c')
| -rw-r--r-- | io/tst-fcntl.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/io/tst-fcntl.c b/io/tst-fcntl.c new file mode 100644 index 0000000..eeb21e3 --- /dev/null +++ b/io/tst-fcntl.c @@ -0,0 +1,196 @@ +/* Tests for fcntl. + 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 <fcntl.h> +#include <paths.h> +#include <string.h> +#include <unistd.h> +#include <sys/stat.h> + + +/* 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 *name; + +void +do_prepare (int argc, char *argv[]) +{ + char name_len; + + name_len = strlen (test_dir); + name = malloc (name_len + sizeof ("/fcntlXXXXXX")); + mempcpy (mempcpy (name, test_dir, name_len), + "/fcntlXXXXXX", sizeof ("/fcntlXXXXXX")); + add_temp_file (name); +} + + +int +do_test (int argc, char *argv[]) +{ + int fd; + int fd2; + int fd3; + struct stat64 st; + int val; + int result = 0; + + /* Create the temporary file. */ + fd = mkstemp (name); + if (fd == -1) + { + printf ("cannot open temporary file: %m\n"); + return 1; + } + if (fstat64 (fd, &st) != 0) + { + printf ("cannot stat test file: %m\n"); + return 1; + } + if (! S_ISREG (st.st_mode) || st.st_size != 0) + { + puts ("file not created correctly"); + return 1; + } + + /* Get the flags with fcntl(). */ + val = fcntl (fd, F_GETFL); + if (val == -1) + { + printf ("fcntl(fd, F_GETFL) failed: %m\n"); + result = 1; + } + else if ((val & O_ACCMODE) != O_RDWR) + { + puts ("temporary file not opened for read and write"); + result = 1; + } + + /* Set the flags to something else. */ + if (fcntl (fd, F_SETFL, O_RDONLY) == -1) + { + printf ("fcntl(fd, F_SETFL, O_RDONLY) failed: %m\n"); + result = 1; + } + + val = fcntl (fd, F_GETFL); + if (val == -1) + { + printf ("fcntl(fd, F_GETFL) after F_SETFL failed: %m\n"); + result = 1; + } + else if ((val & O_ACCMODE) != O_RDWR) + { + puts ("temporary file access mode changed"); + result = 1; + } + + /* Set the flags to something else. */ + if (fcntl (fd, F_SETFL, O_APPEND) == -1) + { + printf ("fcntl(fd, F_SETFL, O_APPEND) failed: %m\n"); + result = 1; + } + + val = fcntl (fd, F_GETFL); + if (val == -1) + { + printf ("fcntl(fd, F_GETFL) after second F_SETFL failed: %m\n"); + result = 1; + } + else if ((val & O_APPEND) == 0) + { + puts ("O_APPEND not set"); + result = 1; + } + + val = fcntl (fd, F_GETFD); + if (val == -1) + { + printf ("fcntl(fd, F_GETFD) failed: %m\n"); + result = 1; + } + else if (fcntl (fd, F_SETFD, val | FD_CLOEXEC) == -1) + { + printf ("fcntl(fd, F_SETFD, FD_CLOEXEC) failed: %m\n"); + result = 1; + } + else + { + val = fcntl (fd, F_GETFD); + if (val == -1) + { + printf ("fcntl(fd, F_GETFD) after F_SETFD failed: %m\n"); + result = 1; + } + else if ((val & FD_CLOEXEC) == 0) + { + puts ("FD_CLOEXEC not set"); + result = 1; + } + } + + /* Get a number of a free descriptor. If /dev/null is not available + don't continue testing. */ + fd2 = open (_PATH_DEVNULL, O_RDWR); + if (fd2 == -1) + return result; + close (fd2); + + fd3 = fcntl (fd, F_DUPFD, fd2 + 1); + if (fd3 == -1) + { + printf ("fcntl(fd, F_DUPFD, %d) failed: %m\n", fd2 + 1); + result = 1; + } + else if (fd3 <= fd2) + { + printf ("F_DUPFD returned %d which is not larger than %d\n", fd3, fd2); + result = 1; + } + + if (fd3 != -1) + { + val = fcntl (fd3, F_GETFD); + if (val == -1) + { + printf ("fcntl(fd3, F_GETFD) after F_DUPFD failed: %m\n"); + result = 1; + } + else if ((val & FD_CLOEXEC) != 0) + { + puts ("FD_CLOEXEC still set"); + result = 1; + } + + close (fd3); + } + + return result; +} |