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Signals: Correct implementation of sigset(). It is not just signal() with a different name; it has some additional signal mask handling functionality

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This commit is contained in:
Gregory Nutt
2016-04-11 09:04:54 -06:00
parent fec1931def
commit 6653c5cbf3
8 changed files with 188 additions and 81 deletions
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include/signal.h
+16 -22
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@@ -181,17 +181,10 @@
* functions that deal with signal disposition.
*/
#define SIG_ERR ((CODE void*)-1)
#define SIG_DFL ((CODE void*)0)
#define SIG_IGN ((CODE void*)0)
#if 0 /* Not yet supported */
# define SIG_HOLD ((CODE void*)0)
#endif
/* System V name compatibility */
#define sigset(s,f) signal(s,f)
#define SIG_ERR ((CODE void *)-1) /* And error occurred */
#define SIG_DFL ((CODE void *)0) /* Default is SIG_IGN for all signals */
#define SIG_IGN ((CODE void *)0) /* Ignore the signal */
#define SIG_HOLD ((CODE void *)1) /* Used only with sigset() */
/********************************************************************************
* Public Type Definitions
@@ -289,29 +282,30 @@ extern "C"
#endif
int kill(pid_t, int);
int sigemptyset(FAR sigset_t *set);
int sigfillset(FAR sigset_t *set);
int sigaddset(FAR sigset_t *set, int signo);
int sigdelset(FAR sigset_t *set, int signo);
int sigismember(FAR const sigset_t *set, int signo);
int sigaction(int sig, FAR const struct sigaction *act,
FAR struct sigaction *oact);
int sigaddset(FAR sigset_t *set, int signo);
int sigdelset(FAR sigset_t *set, int signo);
int sigemptyset(FAR sigset_t *set);
int sigfillset(FAR sigset_t *set);
int sighold(int signo);
int sigismember(FAR const sigset_t *set, int signo);
int sigignore(int signo);
CODE void (*signal(int sig, CODE void (*func)(int signo)))(int signo);
int sigprocmask(int how, FAR const sigset_t *set, FAR sigset_t *oset);
int sigpause(int signo);
int sigrelse(int signo);
int sigpending(FAR sigset_t *set);
int sighold(int signo);
int sigsuspend(FAR const sigset_t *sigmask);
int sigwaitinfo(FAR const sigset_t *set, FAR struct siginfo *value);
int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *value,
FAR const struct timespec *timeout);
#ifdef CONFIG_CAN_PASS_STRUCTS
int sigqueue(int pid, int signo, union sigval value);
#else
int sigqueue(int pid, int signo, FAR void *sival_ptr);
#endif
int sigrelse(int signo);
CODE void (*sigset(int sig, CODE void (*func)(int signo)))(int signo);
int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *value,
FAR const struct timespec *timeout);
int sigsuspend(FAR const sigset_t *sigmask);
int sigwaitinfo(FAR const sigset_t *set, FAR struct siginfo *value);
#undef EXTERN
#ifdef __cplusplus