#include <signal.h>
#include <errno.h>
+#include <stdint.h>
#include "syscall.h"
int raise(int sig)
{
int pid, tid, ret;
- /* Getting the pid/tid pair is not atomic, and could give wrong
- * result if a fork occurs in a signal handler between the two
- * syscalls. Use the tgkill syscall's ESRCH semantics to detect
- * this condition and retry. */
- do {
- tid = syscall0(__NR_gettid);
- pid = syscall0(__NR_getpid);
- ret = syscall3(__NR_tgkill, pid, tid, sig);
- } while (ret<0 && errno == ESRCH);
+ sigset_t set;
+ __syscall(SYS_rt_sigprocmask, SIG_BLOCK, (uint64_t[]){-1}, &set, 8);
+ tid = syscall(SYS_gettid);
+ pid = syscall(SYS_getpid);
+ ret = syscall(SYS_tgkill, pid, tid, sig);
+ __syscall(SYS_rt_sigprocmask, SIG_SETMASK, &set, 0, 8);
return ret;
}