mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-04 10:18:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Strengthen the pledge() polyfill

Browse source
This commit is contained in:
Justine Tunney 2022-06-27 13:01:58 -07:00
parent a6f65eea7c
commit 3c92adfd6e
79 changed files with 1457 additions and 357 deletions
Download patch file Download diff file Expand all files Collapse all files

19
libc/calls/fcntl-sysv.c
View file

@ -19,14 +19,27 @@
#include "libc/calls/struct/flock.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/calls/syscall_support-sysv.internal.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/sysv/consts/f.h"
#include "libc/sysv/errfuns.h"
int sys_fcntl(int fd, int cmd, uintptr_t arg) {
int rc;
bool islock;
islock = cmd == F_SETLK || cmd == F_SETLKW || cmd == F_GETLK;
if (islock) cosmo2flock(arg);
if ((islock = cmd == F_GETLK || //
cmd == F_SETLK || //
cmd == F_SETLKW)) {
if ((!IsAsan() && !arg) ||
(IsAsan() &&
!__asan_is_valid((struct flock *)arg, sizeof(struct flock)))) {
return efault();
}
cosmo2flock(arg);
}
rc = __sys_fcntl(fd, cmd, arg);
if (islock) flock2cosmo(arg);
if (islock) {
flock2cosmo(arg);
}
return rc;
}