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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
#if !defined(__linux__)
# errno "Don't know how to implement mmap(3), mumap(3), and mremap(3)"
#endif
#ifdef SYS_mmap2
# define IF_MMAP2(A) do { A; } while (0)
#else
# define IF_MMAP2(A) ((void)0)
#endif
#if defined(__x86_64__) && defined(__ILP32__) /* x32 */
# define SYSCALL_ARG_MAX LLONG_MAX
#else
# define SYSCALL_ARG_MAX LONG_MAX
#endif
void *
libtest_real_mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off)
{
size_t pagesize = libtest_get_pagesize();
uintptr_t ret;
IF_MMAP2(assert(pagesize == 4096u));
if (off < 0 || off % (off_t)pagesize)
goto einval;
IF_MMAP2(off /= (off_t)pagesize);
if (off > SYSCALL_ARG_MAX)
goto einval;
#ifdef SYS_mmap2
ret = (uintptr_t)syscall(SYS_mmap2, addr, len, prot, flags, fd, off);
#else
ret = (uintptr_t)syscall(SYS_mmap, addr, len, prot, flags, fd, off);
#endif
return (void *)ret;
einval:
errno = EINVAL;
return MAP_FAILED;
}
int
libtest_real_munmap(void *addr, size_t len)
{
return (int)syscall(SYS_munmap, addr, len);
}
void *
libtest_real_mremap(void *old_addr, size_t old_len, size_t new_len, int flags, ...)
{
va_list args;
void *new_addr = NULL;
uintptr_t ret;
if (flags & MREMAP_FIXED) {
va_start(args, flags);
new_addr = va_arg(args, void *);
va_end(args);
}
ret = (uintptr_t)syscall(SYS_mremap, old_addr, old_len, new_len, flags, new_addr);
return (void *)ret;
}
#else
CONST int
main(void)
{
/* TODO maybe test */
return 0;
}
#endif
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