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Diffstat (limited to 'signal')
-rw-r--r--signal/signal.h35
1 files changed, 10 insertions, 25 deletions
diff --git a/signal/signal.h b/signal/signal.h
index 97656d8fd0..9cf9218a6d 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -81,14 +81,12 @@ extern __sighandler_t __REDIRECT (signal,
#ifdef __USE_XOPEN
/* The X/Open definition of `signal' conflicts with the BSD version.
So they defined another function `bsd_signal'. */
-extern __sighandler_t __bsd_signal __P ((int __sig, __sighandler_t __handler));
extern __sighandler_t bsd_signal __P ((int __sig, __sighandler_t __handler));
#endif
/* Send signal SIG to process number PID. If PID is zero,
send SIG to all processes in the current process's process group.
If PID is < -1, send SIG to all processes in process group - PID. */
-extern int __kill __P ((__pid_t __pid, int __sig));
#ifdef __USE_POSIX
extern int kill __P ((__pid_t __pid, int __sig));
#endif /* Use POSIX. */
@@ -115,13 +113,6 @@ extern void psignal __P ((int __sig, __const char *__s));
#endif /* Use misc. */
-/* Block signals in MASK, returning the old mask. */
-extern int __sigblock __P ((int __mask));
-
-/* Set the mask of blocked signals to MASK, returning the old mask. */
-extern int __sigsetmask __P ((int __mask));
-
-
/* The `sigpause' function has two different interfaces. The original
BSD definition defines the argument as a mask of the signal, while
the more modern interface in X/Open defines it as the signal
@@ -143,13 +134,21 @@ extern int sigpause __P ((int __mask));
#ifdef __USE_BSD
+/* None of the following functions should be used anymore. They are here
+ only for compatibility. A single word (`int') is not guaranteed to be
+ enough to hold a complete signal mask and therefore these functions
+ simply do not work in many situations. Use `sigprocmask' instead. */
+
+/* Compute mask for signal SIG. */
# define sigmask(sig) __sigmask(sig)
+/* Block signals in MASK, returning the old mask. */
extern int sigblock __P ((int __mask));
+
+/* Set the mask of blocked signals to MASK, returning the old mask. */
extern int sigsetmask __P ((int __mask));
-/* This function is here only for compatibility.
- Use `sigprocmask' instead. */
+/* Return currently selected signal mask. */
extern int siggetmask __P ((void));
#endif /* Use BSD. */
@@ -221,14 +220,11 @@ extern int sigorset __P ((sigset_t *__set, __const sigset_t *__left,
# include <bits/sigaction.h>
/* Get and/or change the set of blocked signals. */
-extern int __sigprocmask __P ((int __how,
- __const sigset_t *__set, sigset_t *__oset));
extern int sigprocmask __P ((int __how,
__const sigset_t *__set, sigset_t *__oset));
/* Change the set of blocked signals to SET,
wait until a signal arrives, and restore the set of blocked signals. */
-extern int __sigsuspend __P ((__const sigset_t *__set));
extern int sigsuspend __P ((__const sigset_t *__set));
/* Get and/or set the action for signal SIG. */
@@ -242,24 +238,18 @@ extern int sigpending __P ((sigset_t *__set));
/* Select any of pending signals from SET or wait for any to arrive. */
-extern int __sigwait __P ((__const sigset_t *__set, int *__sig));
extern int sigwait __P ((__const sigset_t *__set, int *__sig));
/* Select any of pending signals from SET and place information in INFO. */
-extern int __sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
extern int sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
/* Select any of pending signals from SET and place information in INFO.
Wait the imte specified by TIMEOUT if no signal is pending. */
-extern int __sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
- __const struct timespec *__timeout));
extern int sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
__const struct timespec *__timeout));
/* Send signal SIG to the process PID. Associate data in VAL with the
signal. */
-extern int __sigqueue __P ((__pid_t __pid, int __sig,
- __const union sigval __val));
extern int sigqueue __P ((__pid_t __pid, int __sig,
__const union sigval __val));
@@ -295,8 +285,6 @@ struct sigvec
If the SV_RESETHAND bit is set in `sv_flags', the handler for SIG will be
reset to SIG_DFL before `sv_handler' is entered. If OVEC is non-NULL,
it is filled in with the old information for SIG. */
-extern int __sigvec __P ((int __sig, __const struct sigvec *__vec,
- struct sigvec *__ovec));
extern int sigvec __P ((int __sig, __const struct sigvec *__vec,
struct sigvec *__ovec));
@@ -305,7 +293,6 @@ extern int sigvec __P ((int __sig, __const struct sigvec *__vec,
# include <bits/sigcontext.h>
/* Restore the state saved in SCP. */
-extern int __sigreturn __P ((struct sigcontext *__scp));
extern int sigreturn __P ((struct sigcontext *__scp));
#endif /* signal.h included and use BSD. */
@@ -331,8 +318,6 @@ extern int sigstack __P ((__const struct sigstack *__ss,
/* Alternate signal handler stack interface.
This interface should always be preferred over `sigstack'. */
-extern int __sigaltstack __P ((__const struct sigaltstack *__ss,
- struct sigaltstack *__oss));
extern int sigaltstack __P ((__const struct sigaltstack *__ss,
struct sigaltstack *__oss));