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/*
* Check decoding of remap_file_pages syscall.
*
* Copyright (c) 2016-2017 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <asm/unistd.h>
#include "scno.h"
#ifdef __NR_remap_file_pages
# include <stdio.h>
# include <stdint.h>
# include <unistd.h>
# include <linux/mman.h>
static const char *errstr;
static long
k_remap_file_pages(const kernel_ulong_t addr,
const kernel_ulong_t size,
const kernel_ulong_t prot,
const kernel_ulong_t pgoff,
const kernel_ulong_t flags)
{
const long rc = syscall(__NR_remap_file_pages,
addr, size, prot, pgoff, flags);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
kernel_ulong_t addr = (kernel_ulong_t) 0xfacefeeddeadbeefULL;
kernel_ulong_t size = (kernel_ulong_t) 0xdefaced1bad2f00dULL;
kernel_ulong_t prot = PROT_READ|PROT_WRITE|PROT_EXEC;
kernel_ulong_t pgoff = (kernel_ulong_t) 0xcaf3babebad4deedULL;
kernel_ulong_t flags = MAP_PRIVATE|MAP_ANONYMOUS;
# define prot1_str "PROT_READ|PROT_WRITE|PROT_EXEC"
# define flags1_str "MAP_PRIVATE|MAP_ANONYMOUS"
k_remap_file_pages(addr, size, prot, pgoff, flags);
# if XLAT_RAW
printf("remap_file_pages(%#jx, %ju, %#jx, %ju, %#jx) = %s\n",
(uintmax_t) addr, (uintmax_t) size, (uintmax_t) prot,
(uintmax_t) pgoff, (uintmax_t) flags, errstr);
# elif XLAT_VERBOSE
printf("remap_file_pages(%#jx, %ju, %#jx /* %s */, %ju, %#jx /* %s */)"
" = %s\n",
(uintmax_t) addr, (uintmax_t) size, (uintmax_t) prot, prot1_str,
(uintmax_t) pgoff, (uintmax_t) flags,
flags1_str, errstr);
# else /* XLAT_ABBREV */
printf("remap_file_pages(%#jx, %ju, %s, %ju, %s) = %s\n",
(uintmax_t) addr, (uintmax_t) size, prot1_str,
(uintmax_t) pgoff, flags1_str, errstr);
# endif
#ifdef MAP_HUGETLB
# ifndef MAP_HUGE_2MB
# ifndef MAP_HUGE_SHIFT
# define MAP_HUGE_SHIFT 26
# endif
# define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT)
# endif /* !MAP_HUGE_2MB */
addr = (kernel_ulong_t) 0xfacefeeddeadf00dULL;
size = (kernel_ulong_t) 0xdefaced1bad2beefULL;
prot = (kernel_ulong_t) 0xdefaced00000000ULL | PROT_NONE;
flags = MAP_TYPE | MAP_FIXED | MAP_NORESERVE | MAP_HUGETLB | MAP_HUGE_2MB;
k_remap_file_pages(addr, size, prot, pgoff, flags);
/*
* HP PA-RISC is the only architecture that has MAP_TYPE defined to 0x3, which
* is also used for MAP_SHARED_VALIDATE since Linux commit v4.15-rc1~71^2^2~23.
*/
# ifdef __hppa__
# define MAP_TYPE_str "MAP_SHARED_VALIDATE"
# else
# define MAP_TYPE_str "0xf /* MAP_??? */"
# endif
# define flags2_str \
MAP_TYPE_str "|MAP_FIXED|MAP_NORESERVE|MAP_HUGETLB|21<<MAP_HUGE_SHIFT"
# if XLAT_RAW
printf("remap_file_pages(%#jx, %ju, %#jx, %ju, %#jx) = %s\n",
(uintmax_t) addr, (uintmax_t) size, (uintmax_t) prot,
(uintmax_t) pgoff, (uintmax_t) flags, errstr);
# elif XLAT_VERBOSE
printf("remap_file_pages(%#jx, %ju, %#jx /* %s */, %ju, %#jx /* %s */)"
" = %s\n",
(uintmax_t) addr, (uintmax_t) size, (uintmax_t) prot,
prot == PROT_NONE ? "PROT_NONE" : "PROT_???",
(uintmax_t) pgoff, (uintmax_t) flags, flags2_str, errstr);
# else /* XLAT_ABBREV */
printf("remap_file_pages(%#jx, %ju, %s, %ju, %s) = %s\n",
(uintmax_t) addr, (uintmax_t) size,
prot == PROT_NONE ? "PROT_NONE" :
"0xdefaced00000000 /* PROT_??? */",
(uintmax_t) pgoff, flags2_str, errstr);
# endif
#endif /* MAP_HUGETLB */
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_remap_file_pages")
#endif
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