mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-27 21:10:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Improve pledge() usability and consistency

Browse source 
- We now kill the program on violations like OpenBSD
- We now print a message explaining which promise is needed
- This change also fixes a linkage bug with thread local storage
- Your sigaction() handlers should now be more thread safe

A new `__pledge_mode` global has been introduced to make pledge() more
customizable on Linux. For example:

    __attribute__((__constructor__)) static void init(void) {
      __pledge_mode = SECCOMP_RET_ERRNO | EPERM;
    }

Can be used to restore our old permissive pledge() behavior.
This commit is contained in:
Justine Tunney 2022-08-07 16:18:33 -07:00
parent 13c1c45075
commit 5546559034
30 changed files with 713 additions and 86 deletions
Download patch file Download diff file Expand all files Collapse all files

16
libc/calls/g_sighandrvas.c
View file

@ -19,17 +19,5 @@
#include "libc/calls/state.internal.h"
#include "libc/intrin/pthread.h"
unsigned __sighandrvas[NSIG];
unsigned __sighandflags[NSIG];
static pthread_mutex_t __sig_lock_obj;
void(__sig_lock)(void) {
__sig_lock_obj.attr = PTHREAD_MUTEX_RECURSIVE;
pthread_mutex_lock(&__sig_lock_obj);
}
void(__sig_unlock)(void) {
__sig_lock_obj.attr = PTHREAD_MUTEX_RECURSIVE;
pthread_mutex_unlock(&__sig_lock_obj);
}
_Thread_local unsigned __sighandrvas[NSIG];
_Thread_local unsigned __sighandflags[NSIG];