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a9bfffe593
The fallocate syscall might fail on Linux due missing support from
underlying filesystem (for instance some NFS versions). This patch
adds this check for fallocate tests. It also moves tst-fallocate{64}
to 'io' folder (since it is on fallocate{64} is built).
Checked on x86_64.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) = math] (tests): Move
tst-fallocate{64}.
* sysdeps/unix/sysv/linux/tst-fallocate-common.c: Check for EOPNOTSUPP
on syscall return.
94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/* Basic fallocate test (no specific flags is checked).
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Copyright (C) 2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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static void do_prepare (void);
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#define PREPARE(argc, argv) do_prepare ()
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static int do_test (void);
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#define TEST_FUNCTION do_test ()
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#define TIMEOUT 20 /* sec. */
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#define XSTR(s) STR(S)
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#define STR(s) #s
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#include <test-skeleton.c>
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static char *temp_filename;
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static int temp_fd;
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void
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do_prepare (void)
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{
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temp_fd = create_temp_file ("tst-fallocate.", &temp_filename);
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if (temp_fd == -1)
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FAIL_EXIT1 ("cannot create temporary file: %m");
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}
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static int
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do_test_with_offset (off_t offset)
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{
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int ret;
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struct stat finfo;
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#define BLK_SIZE 1024
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char bwrite[BLK_SIZE] = { 0xf0 };
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char bread[BLK_SIZE];
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/* It tries to fallocate 1024 bytes from 'offset' and then write 1024 bytes.
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After both operation rewind the file descriptor and read 1024 bytes
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and check if both buffer have the same contents. */
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ret = fallocate (temp_fd, 0, offset, BLK_SIZE);
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if (ret == -1)
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{
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/* fallocate might not be fully supported by underlying filesystem (for
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instance some NFS versions). */
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if (errno == EOPNOTSUPP)
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FAIL_EXIT (77, "fallocate not supported");
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FAIL_EXIT1 ("fallocate failed");
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}
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ret = fstat (temp_fd, &finfo);
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if (ret == -1)
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FAIL_EXIT1 ("fstat failed");
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if (finfo.st_size < (offset + BLK_SIZE))
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FAIL_EXIT1 ("size of first fallocate less than expected (%llu)",
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(long long unsigned int)offset + BLK_SIZE);
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if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
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FAIL_EXIT1 ("fseek (0, SEEK_SET) failed");
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if (write (temp_fd, bwrite, BLK_SIZE) != BLK_SIZE)
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FAIL_EXIT1 ("fail trying to write " XSTR (BLK_SIZE) " bytes");
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if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
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FAIL_EXIT1 ("fseek (0, SEEK_SET) failed");
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if (read (temp_fd, bread, BLK_SIZE) != BLK_SIZE)
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FAIL_EXIT1 ("fail trying to read " XSTR (BLK_SIZE) " bytes");
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if (memcmp (bwrite, bread, BLK_SIZE) != 0)
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FAIL_EXIT1 ("buffer written different than buffer readed");
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return 0;
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}
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