| /* The proper definitions for Linux's sigaction. |
| Copyright (C) 1993-1999, 2000 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef _SIGNAL_H |
| # error "Never include <bits/sigaction.h> directly; use <signal.h> instead." |
| #endif |
| |
| /* 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 { |
| __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; |
| #endif |
| 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. */ |
| #define SA_NOCLDWAIT 2 /* Don't create zombie on child death. */ |
| #define SA_SIGINFO 4 /* Invoke signal-catching function with |
| three arguments instead of one. */ |
| #if defined __USE_UNIX98 || defined __USE_MISC |
| # define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */ |
| # define SA_RESTART 0x10000000 /* Restart syscall on signal return. */ |
| # define SA_NODEFER 0x40000000 /* Don't automatically block the signal when |
| its handler is being executed. */ |
| # define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */ |
| #endif |
| #ifdef __USE_MISC |
| # define SA_INTERRUPT 0x20000000 /* Historical no-op. */ |
| |
| /* Some aliases for the SA_ constants. */ |
| # define SA_NOMASK SA_NODEFER |
| # define SA_ONESHOT SA_RESETHAND |
| # define SA_STACK SA_ONSTACK |
| #endif |
| |
| /* Values for the HOW argument to `sigprocmask'. */ |
| #define SIG_BLOCK 0 /* Block signals. */ |
| #define SIG_UNBLOCK 1 /* Unblock signals. */ |
| #define SIG_SETMASK 2 /* Set the set of blocked signals. */ |
