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Side by Side Diff: fusl/src/signal/sigaction.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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1 #include <signal.h> 1 #include <signal.h>
2 #include <errno.h> 2 #include <errno.h>
3 #include <string.h> 3 #include <string.h>
4 #include "syscall.h" 4 #include "syscall.h"
5 #include "pthread_impl.h" 5 #include "pthread_impl.h"
6 #include "libc.h" 6 #include "libc.h"
7 #include "ksigaction.h" 7 #include "ksigaction.h"
8 8
9 static int unmask_done; 9 static int unmask_done;
10 static unsigned long handler_set[_NSIG/(8*sizeof(long))]; 10 static unsigned long handler_set[_NSIG / (8 * sizeof(long))];
11 11
12 void __get_handler_set(sigset_t *set) 12 void __get_handler_set(sigset_t* set) {
13 { 13 memcpy(set, handler_set, sizeof handler_set);
14 » memcpy(set, handler_set, sizeof handler_set);
15 } 14 }
16 15
17 int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigact ion *restrict old) 16 int __libc_sigaction(int sig,
18 { 17 const struct sigaction* restrict sa,
19 » struct k_sigaction ksa, ksa_old; 18 struct sigaction* restrict old) {
20 » if (sa) { 19 struct k_sigaction ksa, ksa_old;
21 » » if ((uintptr_t)sa->sa_handler > 1UL) { 20 if (sa) {
22 » » » a_or_l(handler_set+(sig-1)/(8*sizeof(long)), 21 if ((uintptr_t)sa->sa_handler > 1UL) {
23 » » » » 1UL<<(sig-1)%(8*sizeof(long))); 22 a_or_l(handler_set + (sig - 1) / (8 * sizeof(long)),
23 1UL << (sig - 1) % (8 * sizeof(long)));
24 24
25 » » » /* If pthread_create has not yet been called, 25 /* If pthread_create has not yet been called,
26 » » » * implementation-internal signals might not 26 * implementation-internal signals might not
27 » » » * yet have been unblocked. They must be 27 * yet have been unblocked. They must be
28 » » » * unblocked before any signal handler is 28 * unblocked before any signal handler is
29 » » » * installed, so that an application cannot 29 * installed, so that an application cannot
30 » » » * receive an illegal sigset_t (with them 30 * receive an illegal sigset_t (with them
31 » » » * blocked) as part of the ucontext_t passed 31 * blocked) as part of the ucontext_t passed
32 » » » * to the signal handler. */ 32 * to the signal handler. */
33 » » » if (!libc.threaded && !unmask_done) { 33 if (!libc.threaded && !unmask_done) {
34 » » » » __syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, 34 __syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, SIGPT_SET, 0, _NSIG / 8);
35 » » » » » SIGPT_SET, 0, _NSIG/8); 35 unmask_done = 1;
36 » » » » unmask_done = 1; 36 }
37 » » » } 37 }
38 » » } 38 ksa.handler = sa->sa_handler;
39 » » ksa.handler = sa->sa_handler; 39 ksa.flags = sa->sa_flags | SA_RESTORER;
40 » » ksa.flags = sa->sa_flags | SA_RESTORER; 40 ksa.restorer = (sa->sa_flags & SA_SIGINFO) ? __restore_rt : __restore;
41 » » ksa.restorer = (sa->sa_flags & SA_SIGINFO) ? __restore_rt : __re store; 41 memcpy(&ksa.mask, &sa->sa_mask, sizeof ksa.mask);
42 » » memcpy(&ksa.mask, &sa->sa_mask, sizeof ksa.mask); 42 }
43 » } 43 if (syscall(SYS_rt_sigaction, sig, sa ? &ksa : 0, old ? &ksa_old : 0,
44 » if (syscall(SYS_rt_sigaction, sig, sa?&ksa:0, old?&ksa_old:0, sizeof ksa .mask)) 44 sizeof ksa.mask))
45 » » return -1; 45 return -1;
46 » if (old) { 46 if (old) {
47 » » old->sa_handler = ksa_old.handler; 47 old->sa_handler = ksa_old.handler;
48 » » old->sa_flags = ksa_old.flags; 48 old->sa_flags = ksa_old.flags;
49 » » memcpy(&old->sa_mask, &ksa_old.mask, sizeof ksa_old.mask); 49 memcpy(&old->sa_mask, &ksa_old.mask, sizeof ksa_old.mask);
50 » } 50 }
51 » return 0; 51 return 0;
52 } 52 }
53 53
54 int __sigaction(int sig, const struct sigaction *restrict sa, struct sigaction * restrict old) 54 int __sigaction(int sig,
55 { 55 const struct sigaction* restrict sa,
56 » if (sig-32U < 3 || sig-1U >= _NSIG-1) { 56 struct sigaction* restrict old) {
57 » » errno = EINVAL; 57 if (sig - 32U < 3 || sig - 1U >= _NSIG - 1) {
58 » » return -1; 58 errno = EINVAL;
59 » } 59 return -1;
60 » return __libc_sigaction(sig, sa, old); 60 }
61 return __libc_sigaction(sig, sa, old);
61 } 62 }
62 63
63 weak_alias(__sigaction, sigaction); 64 weak_alias(__sigaction, sigaction);
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