Mercurial > gnulib
view tests/test-pwrite.c @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | 3a09cc104f4c |
children | 344018b6e5d7 |
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/* Test the pwrite function. Copyright (C) 2009-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <unistd.h> #include "signature.h" SIGNATURE_CHECK (pwrite, ssize_t, (int, const void *, size_t, off_t)); #include <sys/types.h> #include <fcntl.h> #include <errno.h> #include <string.h> #include "macros.h" #define N (sizeof buf - 1) int main (void) { char const *file = "out"; int fd; char buf[] = "0123456789"; off_t pos = 2; size_t i; off_t init_pos; ASSERT (file); fd = open (file, O_CREAT | O_WRONLY, 0600); ASSERT (0 <= fd); ASSERT (write (fd, buf, N) == N); ASSERT (close (fd) == 0); fd = open (file, O_WRONLY, 0600); ASSERT (0 <= fd); init_pos = lseek (fd, pos, SEEK_SET); ASSERT (init_pos == pos); for (i = 0; i < N; i+=2) { const char byte = 'W'; ASSERT (pwrite (fd, &byte, 1, i) == 1); ASSERT (lseek (fd, 0, SEEK_CUR) == init_pos); } { /* Invalid offset must evoke failure with EINVAL. */ const char byte = 'b'; ASSERT (pwrite (fd, &byte, 1, (off_t) -1) == -1); ASSERT (errno == EINVAL); } ASSERT (close (fd) == 0); { fd = open (file, O_RDONLY); ASSERT (0 <= fd); ASSERT (read (fd, buf, N) == N); ASSERT (close (fd) == 0); ASSERT (strcmp ("W1W3W5W7W9",buf) == 0); } /* Test behaviour for invalid file descriptors. */ { char byte = 'x'; errno = 0; ASSERT (pwrite (-1, &byte, 1, 0) == -1); ASSERT (errno == EBADF); } { char byte = 'x'; close (99); errno = 0; ASSERT (pwrite (99, &byte, 1, 0) == -1); ASSERT (errno == EBADF); } return 0; }