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Some improvements to signals.

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- Add sigprocmask() and sigpending().
- Forked children inherit signal dispositions and masks.
- Exec clears signal dispositions and masks.
This commit is contained in:
Andreas Kling 2018-11-10 23:29:07 +01:00
parent c97a5862ce
commit 6a0a2c9ab4
7 changed files with 60 additions and 4 deletions
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13
LibC/signal.cpp
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@ -71,6 +71,18 @@ int sigismember(const sigset_t* set, int sig)
return 0;
}
int sigprocmask(int how, const sigset_t* set, sigset_t* old_set)
{
int rc = Syscall::invoke(Syscall::SC_sigprocmask, (dword)how, (dword)set, (dword)old_set);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int sigpending(sigset_t* set)
{
int rc = Syscall::invoke(Syscall::SC_sigpending, (dword)set);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
const char* sys_siglist[NSIG] = {
#undef __SIGNAL
#define __SIGNAL(a, b) b,
@ -78,5 +90,4 @@ const char* sys_siglist[NSIG] = {
#undef __SIGNAL
};
}

2
LibC/signal.h
View file

@ -29,6 +29,8 @@ int sigfillset(sigset_t*);
int sigaddset(sigset_t*, int sig);
int sigdelset(sigset_t*, int sig);
int sigismember(const sigset_t*, int sig);
int sigprocmask(int how, const sigset_t* set, sigset_t* old_set);
int sigpending(sigset_t*);
#define NSIG 32
extern const char* sys_siglist[NSIG];

2
LibC/sys/cdefs.h
View file

@ -17,5 +17,7 @@
#undef __P
#define __P(a) a
#ifdef __cplusplus
extern "C" int main(int, char**);
#endif