Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Weißschuh |
298 |
89.49% |
2 |
33.33% |
| Willy Tarreau |
31 |
9.31% |
2 |
33.33% |
| Sven Schnelle |
3 |
0.90% |
1 |
16.67% |
| Mark Brown |
1 |
0.30% |
1 |
16.67% |
| Total |
333 |
|
6 |
|
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* mm definition for NOLIBC
* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
*/
/* make sure to include all global symbols */
#include "../nolibc.h"
#ifndef _NOLIBC_SYS_MMAN_H
#define _NOLIBC_SYS_MMAN_H
#include "../arch.h"
#include "../sys.h"
#ifndef sys_mmap
static __attribute__((unused))
void *sys_mmap(void *addr, size_t length, int prot, int flags, int fd,
off_t offset)
{
int n;
#if defined(__NR_mmap2)
n = __NR_mmap2;
offset >>= 12;
#else
n = __NR_mmap;
#endif
return (void *)my_syscall6(n, addr, length, prot, flags, fd, offset);
}
#endif
/* Note that on Linux, MAP_FAILED is -1 so we can use the generic __sysret()
* which returns -1 upon error and still satisfy user land that checks for
* MAP_FAILED.
*/
static __attribute__((unused))
void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset)
{
void *ret = sys_mmap(addr, length, prot, flags, fd, offset);
if ((unsigned long)ret >= -4095UL) {
SET_ERRNO(-(long)ret);
ret = MAP_FAILED;
}
return ret;
}
static __attribute__((unused))
void *sys_mremap(void *old_address, size_t old_size, size_t new_size, int flags, void *new_address)
{
return (void *)my_syscall5(__NR_mremap, old_address, old_size,
new_size, flags, new_address);
}
static __attribute__((unused))
void *mremap(void *old_address, size_t old_size, size_t new_size, int flags, void *new_address)
{
void *ret = sys_mremap(old_address, old_size, new_size, flags, new_address);
if ((unsigned long)ret >= -4095UL) {
SET_ERRNO(-(long)ret);
ret = MAP_FAILED;
}
return ret;
}
static __attribute__((unused))
int sys_munmap(void *addr, size_t length)
{
return my_syscall2(__NR_munmap, addr, length);
}
static __attribute__((unused))
int munmap(void *addr, size_t length)
{
return __sysret(sys_munmap(addr, length));
}
#endif /* _NOLIBC_SYS_MMAN_H */