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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
-
- __sigset_t sa_mask;
-
- int sa_flags;
-
- void (*sa_restorer) (void);
- };
- #define SA_NOCLDSTOP 1
- #define SA_NOCLDWAIT 2
- #define SA_SIGINFO 4
- #if defined __USE_UNIX98 || defined __USE_MISC
- # define SA_ONSTACK 0x08000000
- # define SA_RESTART 0x10000000
- # define SA_NODEFER 0x40000000
- # define SA_RESETHAND 0x80000000
- #endif
- #ifdef __USE_MISC
- # define SA_INTERRUPT 0x20000000
- # define SA_NOMASK SA_NODEFER
- # define SA_ONESHOT SA_RESETHAND
- # define SA_STACK SA_ONSTACK
- #endif
- #define SIG_BLOCK 0
- #define SIG_UNBLOCK 1
- #define SIG_SETMASK 2
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