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author | Ulrich Drepper <drepper@redhat.com> | 2002-07-10 23:09:16 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2002-07-10 23:09:16 +0000 |
commit | 81c64d407c82933f18dc09de9bf58cc76d6a6148 (patch) | |
tree | 25a6b5492c2edae9d761ca208d147d726d516804 /libio/tst-freopen.c | |
parent | f4741da2e730191150e4394237716fb29d61845c (diff) | |
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Update.
2002-07-10 Ulrich Drepper <drepper@redhat.com>
* Versions.def [libpthread]: Add GLIBC_2.2.6.
* posix/Versions [libc] (GLIBC_2.2.6): Add __nanosleep.
2002-07-06 Bruno Haible <bruno@clisp.org>
* sysdeps/unix/sysv/sysv4/bits/sigset.h (__NSSBITS): Correct value.
* sysdeps/unix/sysv/linux/bits/statvfs.h (ST_NODIRATIME): Set to 2048.
Diffstat (limited to 'libio/tst-freopen.c')
-rw-r--r-- | libio/tst-freopen.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/libio/tst-freopen.c b/libio/tst-freopen.c new file mode 100644 index 0000000000..20e5f2f874 --- /dev/null +++ b/libio/tst-freopen.c @@ -0,0 +1,103 @@ +/* Test freopen with mmap stdio. + Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2002. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +int main (void) +{ + char name[] = "/tmp/tst-freopen.XXXXXX"; + char buf[4096]; + const char * const test = "Let's test freopen.\n"; + char temp[strlen (test) + 1]; + int fd = mkstemp (name); + FILE *f; + + if (fd == -1) + { + printf ("%Zd: cannot open temporary file: %m\n", __LINE__); + exit (1); + } + + f = fdopen (fd, "w"); + if (f == NULL) + { + printf ("%Zd: cannot fdopen temporary file: %m\n", __LINE__); + exit (1); + } + + fputs (test, f); + fclose (f); + + f = fopen (name, "r"); + if (f == NULL) + { + printf ("%Zd: cannot fopen temporary file: %m\n", __LINE__); + exit (1); + } + + if (fread (temp, 1, strlen (test), f) != strlen (test)) + { + printf ("%Zd: couldn't read the file back: %m\n", __LINE__); + exit (1); + } + temp [strlen (test)] = '\0'; + + if (strcmp (test, temp)) + { + printf ("%Zd: read different string than was written:\n%s%s", + __LINE__, test, temp); + exit (1); + } + + f = freopen (name, "r+", f); + if (f == NULL) + { + printf ("%Zd: cannot freopen temporary file: %m\n", __LINE__); + exit (1); + } + + if (fseek (f, 0, SEEK_SET) != 0) + { + printf ("%Zd: couldn't fseek to start: %m\n", __LINE__); + exit (1); + } + + if (fread (temp, 1, strlen (test), f) != strlen (test)) + { + printf ("%Zd: couldn't read the file back: %m\n", __LINE__); + exit (1); + } + temp [strlen (test)] = '\0'; + + if (strcmp (test, temp)) + { + printf ("%Zd: read different string than was written:\n%s%s", + __LINE__, test, temp); + exit (1); + } + + fclose (f); + + unlink (name); + exit (0); +} |