blob: c243ae40bf61bf65923bb3474216df4e70d03b7b [file] [log] [blame]
/*
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
* Copyright (c) 2016-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <asm/unistd.h>
#ifdef HAVE_READAHEAD
/* Check for glibc readahead argument passing bugs. */
# ifdef __GLIBC__
/*
* glibc < 2.8 had an incorrect order of higher and lower parts of offset,
* see https://sourceware.org/bugzilla/show_bug.cgi?id=5208
*/
# if !(defined __GLIBC_MINOR__ && \
(__GLIBC__ << 16) + __GLIBC_MINOR__ >= (2 << 16) + 8)
# undef HAVE_READAHEAD
# endif /* glibc < 2.8 */
/*
* glibc < 2.25 had an incorrect implementation on mips n64,
* see https://sourceware.org/bugzilla/show_bug.cgi?id=21026
*/
# if defined LINUX_MIPSN64 && !(defined __GLIBC_MINOR__ && \
(__GLIBC__ << 16) + __GLIBC_MINOR__ >= (2 << 16) + 25)
# undef HAVE_READAHEAD
# endif /* LINUX_MIPSN64 && glibc < 2.25 */
# endif /* __GLIBC__ */
#endif /* HAVE_READAHEAD */
#ifdef HAVE_READAHEAD
# include <fcntl.h>
# include <stdio.h>
static const int fds[] = {
-0x80000000,
-100,
-1,
0,
1,
2,
0x7fffffff,
};
static const off64_t offsets[] = {
-0x8000000000000000LL,
-0x5060708090a0b0c0LL,
-1LL,
0,
1,
0xbadfaced,
0x7fffffffffffffffLL,
};
static const unsigned long counts[] = {
0UL,
0xdeadca75,
(unsigned long) 0xface1e55beeff00dULL,
(unsigned long) 0xffffffffffffffffULL,
};
int
main(void)
{
unsigned i;
unsigned j;
unsigned k;
ssize_t rc;
for (i = 0; i < ARRAY_SIZE(fds); i++)
for (j = 0; j < ARRAY_SIZE(offsets); j++)
for (k = 0; k < ARRAY_SIZE(counts); k++) {
rc = readahead(fds[i], offsets[j], counts[k]);
printf("readahead(%d, %lld, %lu) = %s\n",
fds[i], (long long) offsets[j],
counts[k], sprintrc(rc));
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("HAVE_READAHEAD")
#endif