1*c9945492SAndroid Build Coastguard Worker #define _GNU_SOURCE
2*c9945492SAndroid Build Coastguard Worker #include <unistd.h>
3*c9945492SAndroid Build Coastguard Worker #include <sys/mman.h>
4*c9945492SAndroid Build Coastguard Worker #include <errno.h>
5*c9945492SAndroid Build Coastguard Worker #include <stdint.h>
6*c9945492SAndroid Build Coastguard Worker #include <stdarg.h>
7*c9945492SAndroid Build Coastguard Worker #include "syscall.h"
8*c9945492SAndroid Build Coastguard Worker
dummy(void)9*c9945492SAndroid Build Coastguard Worker static void dummy(void) { }
10*c9945492SAndroid Build Coastguard Worker weak_alias(dummy, __vm_wait);
11*c9945492SAndroid Build Coastguard Worker
__mremap(void * old_addr,size_t old_len,size_t new_len,int flags,...)12*c9945492SAndroid Build Coastguard Worker void *__mremap(void *old_addr, size_t old_len, size_t new_len, int flags, ...)
13*c9945492SAndroid Build Coastguard Worker {
14*c9945492SAndroid Build Coastguard Worker va_list ap;
15*c9945492SAndroid Build Coastguard Worker void *new_addr = 0;
16*c9945492SAndroid Build Coastguard Worker
17*c9945492SAndroid Build Coastguard Worker if (new_len >= PTRDIFF_MAX) {
18*c9945492SAndroid Build Coastguard Worker errno = ENOMEM;
19*c9945492SAndroid Build Coastguard Worker return MAP_FAILED;
20*c9945492SAndroid Build Coastguard Worker }
21*c9945492SAndroid Build Coastguard Worker
22*c9945492SAndroid Build Coastguard Worker if (flags & MREMAP_FIXED) {
23*c9945492SAndroid Build Coastguard Worker __vm_wait();
24*c9945492SAndroid Build Coastguard Worker va_start(ap, flags);
25*c9945492SAndroid Build Coastguard Worker new_addr = va_arg(ap, void *);
26*c9945492SAndroid Build Coastguard Worker va_end(ap);
27*c9945492SAndroid Build Coastguard Worker }
28*c9945492SAndroid Build Coastguard Worker
29*c9945492SAndroid Build Coastguard Worker return (void *)syscall(SYS_mremap, old_addr, old_len, new_len, flags, new_addr);
30*c9945492SAndroid Build Coastguard Worker }
31*c9945492SAndroid Build Coastguard Worker
32*c9945492SAndroid Build Coastguard Worker weak_alias(__mremap, mremap);
33