1 /* libc/sys/linux/signal.c - Signal handling functions */
2
3 /* Written 2000 by Werner Almesberger */
4
5
6 #include <signal.h>
7 #include <unistd.h>
8 #include <sys/types.h>
9 #include <machine/syscall.h>
10
11 /* avoid name space pollution */
12 #define __NR___sgetmask __NR_sgetmask
13 #define __NR___ssetmask __NR_ssetmask
14 #define __NR___rt_sigtimedwait __NR_rt_sigtimedwait
15 #define __NR___rt_sigpending __NR_rt_sigpending
16 #define __NR___rt_sigprocmask __NR_rt_sigprocmask
17 #define __NR___rt_sigsuspend __NR_rt_sigsuspend
18
_syscall2(int,kill,pid_t,pid,int,sig)19 _syscall2(int,kill,pid_t,pid,int,sig)
20 _syscall2(__sighandler_t,signal,int,signum,__sighandler_t,handler)
21 _syscall0(int,pause)
22 _syscall1(unsigned int,alarm,unsigned int,seconds)
23
24 static _syscall2(int,__rt_sigpending,sigset_t *,set,size_t,size)
25 static _syscall4(int,__rt_sigprocmask,int,how,const sigset_t *,set,sigset_t *,oldset,size_t,size)
26 static _syscall2(int,__rt_sigsuspend,const sigset_t *,mask,size_t,size)
27 static _syscall4(int,__rt_sigtimedwait,const sigset_t *,set,siginfo_t *,info,struct timespec *,timeout,size_t,size)
28
29 int __sigsuspend (const sigset_t *mask)
30 {
31 return __rt_sigsuspend(mask, NSIG/8);
32 }
weak_alias(__sigsuspend,sigsuspend)33 weak_alias(__sigsuspend,sigsuspend)
34
35 int sigmask(int signum) /* BSD */
36 {
37 return 1 << signum;
38 }
39
__libc_raise(int sig)40 int __libc_raise(int sig)
41 {
42 return kill(getpid(),sig);
43 }
weak_alias(__libc_raise,raise)44 weak_alias(__libc_raise,raise)
45
46 int __sigpending(sigset_t *set)
47 {
48 return __rt_sigpending(set, NSIG/8);
49 }
weak_alias(__sigpending,sigpending)50 weak_alias(__sigpending,sigpending)
51
52 int __sigprocmask (int how,const sigset_t *set,sigset_t *oldset)
53 {
54 return __rt_sigprocmask(how, set, oldset, NSIG/8);
55 }
weak_alias(__sigprocmask,sigprocmask)56 weak_alias(__sigprocmask,sigprocmask)
57
58 int sigtimedwait(const sigset_t *set, siginfo_t *info,
59 struct timespec *timeout)
60 {
61 return __rt_sigtimedwait(set, info, timeout, NSIG/8);
62 }
63
sigwaitinfo(const sigset_t * set,siginfo_t * info)64 int sigwaitinfo(const sigset_t *set, siginfo_t *info)
65 {
66 return __rt_sigtimedwait(set, info, NULL, NSIG/8);
67 }
68
69 #if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4
70
_syscall1(int,__ssetmask,int,newmask)71 static _syscall1(int,__ssetmask,int,newmask)
72 static _syscall0(int,__sgetmask)
73
74 int sigblock(int mask) /* BSD */
75 {
76 return __ssetmask(mask | __sgetmask());
77 }
78
sigsetmask(int newmask)79 int sigsetmask(int newmask) /* BSD */
80 {
81 return __ssetmask(newmask);
82 }
83 #endif
84
85 const char *const sys_siglist[] = {
86 #include "siglist.inc"
87 };
88