16f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 28a1ab315SDavid Howells #ifndef __ASM_GENERIC_SIGNAL_DEFS_H 38a1ab315SDavid Howells #define __ASM_GENERIC_SIGNAL_DEFS_H 48a1ab315SDavid Howells 58a1ab315SDavid Howells #include <linux/compiler.h> 68a1ab315SDavid Howells 71d82b789SPeter Collingbourne /* 81d82b789SPeter Collingbourne * SA_FLAGS values: 91d82b789SPeter Collingbourne * 101d82b789SPeter Collingbourne * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 111d82b789SPeter Collingbourne * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 121d82b789SPeter Collingbourne * SA_SIGINFO delivers the signal with SIGINFO structs. 131d82b789SPeter Collingbourne * SA_ONSTACK indicates that a registered stack_t will be used. 141d82b789SPeter Collingbourne * SA_RESTART flag to get restarting signals (which were the default long ago) 151d82b789SPeter Collingbourne * SA_NODEFER prevents the current signal from being masked in the handler. 161d82b789SPeter Collingbourne * SA_RESETHAND clears the handler when the signal is delivered. 17a54f0dfdSPeter Collingbourne * SA_UNSUPPORTED is a flag bit that will never be supported. Kernels from 18a54f0dfdSPeter Collingbourne * before the introduction of SA_UNSUPPORTED did not clear unknown bits from 19a54f0dfdSPeter Collingbourne * sa_flags when read using the oldact argument to sigaction and rt_sigaction, 20a54f0dfdSPeter Collingbourne * so this bit allows flag bit support to be detected from userspace while 21a54f0dfdSPeter Collingbourne * allowing an old kernel to be distinguished from a kernel that supports every 22a54f0dfdSPeter Collingbourne * flag bit. 236ac05e83SPeter Collingbourne * SA_EXPOSE_TAGBITS exposes an architecture-defined set of tag bits in 246ac05e83SPeter Collingbourne * siginfo.si_addr. 251d82b789SPeter Collingbourne * 261d82b789SPeter Collingbourne * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 271d82b789SPeter Collingbourne * Unix names RESETHAND and NODEFER respectively. 281d82b789SPeter Collingbourne */ 291d82b789SPeter Collingbourne #ifndef SA_NOCLDSTOP 301d82b789SPeter Collingbourne #define SA_NOCLDSTOP 0x00000001 311d82b789SPeter Collingbourne #endif 321d82b789SPeter Collingbourne #ifndef SA_NOCLDWAIT 331d82b789SPeter Collingbourne #define SA_NOCLDWAIT 0x00000002 341d82b789SPeter Collingbourne #endif 351d82b789SPeter Collingbourne #ifndef SA_SIGINFO 361d82b789SPeter Collingbourne #define SA_SIGINFO 0x00000004 371d82b789SPeter Collingbourne #endif 387da5082aSPeter Collingbourne /* 0x00000008 used on alpha, mips, parisc */ 397da5082aSPeter Collingbourne /* 0x00000010 used on alpha, parisc */ 407da5082aSPeter Collingbourne /* 0x00000020 used on alpha, parisc, sparc */ 417da5082aSPeter Collingbourne /* 0x00000040 used on alpha, parisc */ 427da5082aSPeter Collingbourne /* 0x00000080 used on parisc */ 437da5082aSPeter Collingbourne /* 0x00000100 used on sparc */ 447da5082aSPeter Collingbourne /* 0x00000200 used on sparc */ 45a54f0dfdSPeter Collingbourne #define SA_UNSUPPORTED 0x00000400 466ac05e83SPeter Collingbourne #define SA_EXPOSE_TAGBITS 0x00000800 477da5082aSPeter Collingbourne /* 0x00010000 used on mips */ 48*00b06da2SEric W. Biederman /* 0x00800000 used for internal SA_IMMUTABLE */ 497da5082aSPeter Collingbourne /* 0x01000000 used on x86 */ 507da5082aSPeter Collingbourne /* 0x02000000 used on x86 */ 517da5082aSPeter Collingbourne /* 527da5082aSPeter Collingbourne * New architectures should not define the obsolete 537da5082aSPeter Collingbourne * SA_RESTORER 0x04000000 547da5082aSPeter Collingbourne */ 551d82b789SPeter Collingbourne #ifndef SA_ONSTACK 561d82b789SPeter Collingbourne #define SA_ONSTACK 0x08000000 571d82b789SPeter Collingbourne #endif 581d82b789SPeter Collingbourne #ifndef SA_RESTART 591d82b789SPeter Collingbourne #define SA_RESTART 0x10000000 601d82b789SPeter Collingbourne #endif 611d82b789SPeter Collingbourne #ifndef SA_NODEFER 621d82b789SPeter Collingbourne #define SA_NODEFER 0x40000000 631d82b789SPeter Collingbourne #endif 641d82b789SPeter Collingbourne #ifndef SA_RESETHAND 651d82b789SPeter Collingbourne #define SA_RESETHAND 0x80000000 661d82b789SPeter Collingbourne #endif 671d82b789SPeter Collingbourne 681d82b789SPeter Collingbourne #define SA_NOMASK SA_NODEFER 691d82b789SPeter Collingbourne #define SA_ONESHOT SA_RESETHAND 701d82b789SPeter Collingbourne 718a1ab315SDavid Howells #ifndef SIG_BLOCK 728a1ab315SDavid Howells #define SIG_BLOCK 0 /* for blocking signals */ 738a1ab315SDavid Howells #endif 748a1ab315SDavid Howells #ifndef SIG_UNBLOCK 758a1ab315SDavid Howells #define SIG_UNBLOCK 1 /* for unblocking signals */ 768a1ab315SDavid Howells #endif 778a1ab315SDavid Howells #ifndef SIG_SETMASK 788a1ab315SDavid Howells #define SIG_SETMASK 2 /* for setting the signal mask */ 798a1ab315SDavid Howells #endif 808a1ab315SDavid Howells 818a1ab315SDavid Howells #ifndef __ASSEMBLY__ 828a1ab315SDavid Howells typedef void __signalfn_t(int); 838a1ab315SDavid Howells typedef __signalfn_t __user *__sighandler_t; 848a1ab315SDavid Howells 858a1ab315SDavid Howells typedef void __restorefn_t(void); 868a1ab315SDavid Howells typedef __restorefn_t __user *__sigrestore_t; 878a1ab315SDavid Howells 888a1ab315SDavid Howells #define SIG_DFL ((__force __sighandler_t)0) /* default signal handling */ 898a1ab315SDavid Howells #define SIG_IGN ((__force __sighandler_t)1) /* ignore signal */ 908a1ab315SDavid Howells #define SIG_ERR ((__force __sighandler_t)-1) /* error return from signal */ 918a1ab315SDavid Howells #endif 928a1ab315SDavid Howells 938a1ab315SDavid Howells #endif /* __ASM_GENERIC_SIGNAL_DEFS_H */ 94