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- #ifndef _SIGNAL_H
- # error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
- #endif
- 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;
- };
- #define SA_NOCLDSTOP 0x00000008
- #define SA_NOCLDWAIT 0x00000100
- #define SA_SIGINFO 0x00000200
- #if defined __USE_UNIX98 || defined __USE_MISC
- # define SA_ONSTACK 0x00000001
- # define SA_RESTART 0x00000002
- # define SA_INTERRUPT 0x00000010
- # define SA_NOMASK 0x00000020
- # define SA_ONESHOT 0x00000004
- # define SA_NODEFER SA_NOMASK
- # define SA_RESETHAND SA_ONESHOT
- # define SA_STACK SA_ONSTACK
- #endif
- #define SIG_BLOCK 1
- #define SIG_UNBLOCK 2
- #define SIG_SETMASK 4
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