From 885f507317b6c8576ba2e298c2249d27ea6f8404 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Mon, 15 Dec 2008 09:29:33 +0000 Subject: sigaction overhaul as described in docs/sigaction.txt Run tested on i386. --- libc/sysdeps/linux/common/bits/sigaction.h | 42 ++++++++++++------------------ 1 file changed, 17 insertions(+), 25 deletions(-) (limited to 'libc/sysdeps/linux/common/bits/sigaction.h') diff --git a/libc/sysdeps/linux/common/bits/sigaction.h b/libc/sysdeps/linux/common/bits/sigaction.h index 48cc5312f..7489aa878 100644 --- a/libc/sysdeps/linux/common/bits/sigaction.h +++ b/libc/sysdeps/linux/common/bits/sigaction.h @@ -21,34 +21,26 @@ # error "Never include directly; use instead." #endif -/* Structure describing the action to be taken when a signal arrives. */ -struct sigaction - { - /* Signal handler. */ +/* Structure describing the action to be taken when a signal arrives. + * In uclibc, it is identical to "new" struct kernel_sigaction + * (one from the Linux 2.1.68 kernel). + * This minimizes amount of translation in sigaction(). + */ +struct sigaction { #ifdef __USE_POSIX199309 - union - { - /* Used if SA_SIGINFO is not set. */ - __sighandler_t sa_handler; - /* Used if SA_SIGINFO is set. */ - void (*sa_sigaction) (int, siginfo_t *, void *); - } - __sigaction_handler; -# define sa_handler __sigaction_handler.sa_handler -# define sa_sigaction __sigaction_handler.sa_sigaction + union { + __sighandler_t sa_handler; + void (*sa_sigaction)(int, siginfo_t *, void *); + } __sigaction_handler; +# define sa_handler __sigaction_handler.sa_handler +# define sa_sigaction __sigaction_handler.sa_sigaction #else - __sighandler_t sa_handler; + __sighandler_t sa_handler; #endif - - /* Additional set of signals to be blocked. */ - __sigset_t sa_mask; - - /* Special flags. */ - int sa_flags; - - /* Restore handler. */ - void (*sa_restorer) (void); - }; + unsigned long sa_flags; + void (*sa_restorer)(void); + sigset_t sa_mask; +}; /* Bits in `sa_flags'. */ #define SA_NOCLDSTOP 1 /* Don't send SIGCHLD when children stop. */ -- cgit v1.2.3