Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Benjamin Berg |
268 |
91.78% |
1 |
12.50% |
| Jeff Dike |
14 |
4.79% |
4 |
50.00% |
| Bodo Stroesser |
8 |
2.74% |
1 |
12.50% |
| Al Viro |
1 |
0.34% |
1 |
12.50% |
| Alex Dewar |
1 |
0.34% |
1 |
12.50% |
| Total |
292 |
|
8 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Benjamin Berg <benjamin@sipsolutions.net>
*/
#include <sysdep/stub.h>
static __always_inline int syscall_handler(struct stub_data *d)
{
int i;
unsigned long res;
for (i = 0; i < d->syscall_data_len; i++) {
struct stub_syscall *sc = &d->syscall_data[i];
switch (sc->syscall) {
case STUB_SYSCALL_MMAP:
res = stub_syscall6(STUB_MMAP_NR,
sc->mem.addr, sc->mem.length,
sc->mem.prot,
MAP_SHARED | MAP_FIXED,
sc->mem.fd, sc->mem.offset);
if (res != sc->mem.addr) {
d->err = res;
d->syscall_data_len = i;
return -1;
}
break;
case STUB_SYSCALL_MUNMAP:
res = stub_syscall2(__NR_munmap,
sc->mem.addr, sc->mem.length);
if (res) {
d->err = res;
d->syscall_data_len = i;
return -1;
}
break;
case STUB_SYSCALL_MPROTECT:
res = stub_syscall3(__NR_mprotect,
sc->mem.addr, sc->mem.length,
sc->mem.prot);
if (res) {
d->err = res;
d->syscall_data_len = i;
return -1;
}
break;
default:
d->err = -95; /* EOPNOTSUPP */
d->syscall_data_len = i;
return -1;
}
}
d->err = 0;
d->syscall_data_len = 0;
return 0;
}
void __section(".__syscall_stub")
stub_syscall_handler(void)
{
struct stub_data *d = get_stub_data();
syscall_handler(d);
trap_myself();
}