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688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/* Common definitions for preadv and pwritev.
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Copyright (C) 2016-2018 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 <stdio.h>
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#include <stdint.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <support/check.h>
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#include <support/temp_file.h>
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static char *temp_filename;
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static int temp_fd;
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static int do_test (void);
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static void
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do_prepare (int argc, char **argv)
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{
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temp_fd = create_temp_file ("tst-preadvwritev.", &temp_filename);
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if (temp_fd == -1)
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FAIL_EXIT1 ("cannot create temporary file");
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}
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#define PREPARE do_prepare
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#ifndef PREADV
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# define PREADV(__fd, __iov, __iovcnt, __offset) \
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preadv (__fd, __iov, __iovcnt, __offset)
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#endif
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#ifndef PWRITEV
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# define PWRITEV(__fd, __iov, __iovcnt, __offset) \
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pwritev (__fd, __iov, __iovcnt, __offset)
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#endif
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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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struct iovec iov[2];
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ssize_t ret;
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char buf1[32];
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char buf2[64];
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memset (buf1, 0xf0, sizeof buf1);
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memset (buf2, 0x0f, sizeof buf2);
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/* Write two buffer with 32 and 64 bytes respectively. */
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memset (iov, 0, sizeof iov);
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iov[0].iov_base = buf1;
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iov[0].iov_len = sizeof buf1;
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iov[1].iov_base = buf2;
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iov[1].iov_len = sizeof buf2;
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ret = PWRITEV (temp_fd, iov, 2, offset);
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if (ret == -1)
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FAIL_RET ("first pwritev returned -1");
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if (ret != (sizeof buf1 + sizeof buf2))
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FAIL_RET ("first pwritev returned an unexpected value");
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ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
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if (ret == -1)
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FAIL_RET ("second pwritev returned -1");
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if (ret != (sizeof buf1 + sizeof buf2))
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FAIL_RET ("second pwritev returned an unexpected value");
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char buf3[32];
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char buf4[64];
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memset (buf3, 0x0f, sizeof buf3);
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memset (buf4, 0xf0, sizeof buf4);
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iov[0].iov_base = buf3;
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iov[0].iov_len = sizeof buf3;
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iov[1].iov_base = buf4;
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iov[1].iov_len = sizeof buf4;
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/* Now read two buffer with 32 and 64 bytes respectively. */
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ret = PREADV (temp_fd, iov, 2, offset);
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if (ret == -1)
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FAIL_RET ("first preadv returned -1");
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if (ret != (sizeof buf3 + sizeof buf4))
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FAIL_RET ("first preadv returned an unexpected value");
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if (memcmp (buf1, buf3, sizeof buf1) != 0)
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FAIL_RET ("first buffer from first preadv different than expected");
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if (memcmp (buf2, buf4, sizeof buf2) != 0)
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FAIL_RET ("second buffer from first preadv different than expected");
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ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
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if (ret == -1)
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FAIL_RET ("second preadv returned -1");
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if (ret != (sizeof buf3 + sizeof buf4))
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FAIL_RET ("second preadv returned an unexpected value");
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/* And compare the buffers read and written to check if there are equal. */
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if (memcmp (buf1, buf3, sizeof buf1) != 0)
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FAIL_RET ("first buffer from second preadv different than expected");
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if (memcmp (buf2, buf4, sizeof buf2) != 0)
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FAIL_RET ("second buffer from second preadv different than expected");
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return 0;
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}
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#include <support/test-driver.c>
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