blob: cc6991a635e1d2e2eb82f8f24fc39534901d6502 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
#define _GNU_SOURCE
#include <unistd.h>
#include <sys/mman.h>
#include <errno.h>
#include <stdint.h>
#include <stdarg.h>
#include "syscall.h"
static void dummy(void) { }
weak_alias(dummy, __vm_wait);
void *__mremap(void *old_addr, size_t old_len, size_t new_len, int flags, ...)
{
va_list ap;
void *new_addr = 0;
if (new_len >= PTRDIFF_MAX) {
errno = ENOMEM;
return MAP_FAILED;
}
if (flags & MREMAP_FIXED) {
__vm_wait();
va_start(ap, flags);
new_addr = va_arg(ap, void *);
va_end(ap);
}
return (void *)syscall(SYS_mremap, old_addr, old_len, new_len, flags, new_addr);
}
weak_alias(__mremap, mremap);
|
