Mercurial > gnulib
view tests/test-read.c @ 17292:3a09cc104f4c
tests: don't assume fd 99 is closed
* tests/test-accept.c, tests/test-accept4.c, tests/test-bind.c:
* tests/test-close.c, tests/test-connect.c, tests/test-dprintf.c:
* tests/test-dup.c, tests/test-dup2.c, tests/test-faccessat.c:
* tests/test-fchdir.c, tests/test-fchmod.c, tests/test-fchmodat.c:
* tests/test-fchown.c, tests/test-fchownat.c, tests/test-fclose.c:
* tests/test-fdatasync.c, tests/test-fdopen.c, tests/test-fdopendir.c:
* tests/test-fflush.c, tests/test-fgetc.c, tests/test-fputc.c:
* tests/test-fread.c, tests/test-freopen.c, tests/test-fseeko4.c:
* tests/test-fstat.c, tests/test-fstatat.c, tests/test-fsync.c:
* tests/test-ftello4.c, tests/test-ftruncate.c, tests/test-futimens.h:
* tests/test-fwrite.c, tests/test-getpeername.c:
* tests/test-getsockname.c, tests/test-getsockopt.c:
* tests/test-grantpt.c, tests/test-ioctl.c, tests/test-isatty.c:
* tests/test-linkat.c, tests/test-listen.c, tests/test-lseek.c:
* tests/test-mkdirat.c, tests/test-mkfifoat.c, tests/test-openat.c:
* tests/test-pread.c, tests/test-pwrite.c, tests/test-read.c:
* tests/test-readlinkat.c, tests/test-recv.c, tests/test-recvfrom.c:
* tests/test-renameat.c, tests/test-select.h, tests/test-send.c:
* tests/test-sendto.c, tests/test-setsockopt.c, tests/test-shutdown.c:
* tests/test-symlinkat.c, tests/test-ttyname_r.c:
* tests/test-unlinkat.c, tests/test-unlockpt.c:
* tests/test-utimensat.c, tests/test-vdprintf.c, tests/test-write.c:
Close file descriptor 99, instead of assuming it's already closed.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 22 Jan 2013 09:43:22 -0800 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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/* Test the read() function. Copyright (C) 2011-2013 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 (read, ssize_t, (int, void *, size_t)); #include <errno.h> #include <fcntl.h> #include <string.h> #include "macros.h" int main (void) { const char *filename = "test-read.tmp"; int fd; /* Create a file with a simple contents. */ fd = open (filename, O_CREAT | O_WRONLY, 0600); ASSERT (fd >= 0); ASSERT (write (fd, "Hello World", 11) == 11); ASSERT (close (fd) == 0); /* Read from the middle of the file. */ fd = open (filename, O_RDONLY); ASSERT (fd >= 0); ASSERT (lseek (fd, 6, SEEK_SET) == 6); { char buf[10]; ssize_t ret = read (fd, buf, 10); ASSERT (ret == 5); ASSERT (memcmp (buf, "World", 5) == 0); } ASSERT (close (fd) == 0); /* Test behaviour for invalid file descriptors. */ { char byte; errno = 0; ASSERT (read (-1, &byte, 1) == -1); ASSERT (errno == EBADF); } { char byte; close (99); errno = 0; ASSERT (read (99, &byte, 1) == -1); ASSERT (errno == EBADF); } /* Clean up. */ unlink (filename); return 0; }