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92 lines
2.9 KiB
92 lines
2.9 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef __ASM_GENERIC_SIGNAL_DEFS_H |
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#define __ASM_GENERIC_SIGNAL_DEFS_H |
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#include <linux/compiler.h> |
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/* |
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* SA_FLAGS values: |
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* |
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* SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. |
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* SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. |
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* SA_SIGINFO delivers the signal with SIGINFO structs. |
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* SA_ONSTACK indicates that a registered stack_t will be used. |
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* SA_RESTART flag to get restarting signals (which were the default long ago) |
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* SA_NODEFER prevents the current signal from being masked in the handler. |
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* SA_RESETHAND clears the handler when the signal is delivered. |
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* SA_UNSUPPORTED is a flag bit that will never be supported. Kernels from |
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* before the introduction of SA_UNSUPPORTED did not clear unknown bits from |
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* sa_flags when read using the oldact argument to sigaction and rt_sigaction, |
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* so this bit allows flag bit support to be detected from userspace while |
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* allowing an old kernel to be distinguished from a kernel that supports every |
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* flag bit. |
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* SA_EXPOSE_TAGBITS exposes an architecture-defined set of tag bits in |
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* siginfo.si_addr. |
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* |
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* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single |
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* Unix names RESETHAND and NODEFER respectively. |
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*/ |
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#ifndef SA_NOCLDSTOP |
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#define SA_NOCLDSTOP 0x00000001 |
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#endif |
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#ifndef SA_NOCLDWAIT |
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#define SA_NOCLDWAIT 0x00000002 |
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#endif |
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#ifndef SA_SIGINFO |
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#define SA_SIGINFO 0x00000004 |
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#endif |
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/* 0x00000008 used on alpha, mips, parisc */ |
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/* 0x00000010 used on alpha, parisc */ |
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/* 0x00000020 used on alpha, parisc, sparc */ |
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/* 0x00000040 used on alpha, parisc */ |
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/* 0x00000080 used on parisc */ |
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/* 0x00000100 used on sparc */ |
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/* 0x00000200 used on sparc */ |
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#define SA_UNSUPPORTED 0x00000400 |
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#define SA_EXPOSE_TAGBITS 0x00000800 |
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/* 0x00010000 used on mips */ |
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/* 0x01000000 used on x86 */ |
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/* 0x02000000 used on x86 */ |
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/* |
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* New architectures should not define the obsolete |
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* SA_RESTORER 0x04000000 |
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*/ |
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#ifndef SA_ONSTACK |
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#define SA_ONSTACK 0x08000000 |
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#endif |
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#ifndef SA_RESTART |
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#define SA_RESTART 0x10000000 |
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#endif |
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#ifndef SA_NODEFER |
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#define SA_NODEFER 0x40000000 |
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#endif |
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#ifndef SA_RESETHAND |
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#define SA_RESETHAND 0x80000000 |
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#endif |
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#define SA_NOMASK SA_NODEFER |
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#define SA_ONESHOT SA_RESETHAND |
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#ifndef SIG_BLOCK |
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#define SIG_BLOCK 0 /* for blocking signals */ |
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#endif |
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#ifndef SIG_UNBLOCK |
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#define SIG_UNBLOCK 1 /* for unblocking signals */ |
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#endif |
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#ifndef SIG_SETMASK |
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#define SIG_SETMASK 2 /* for setting the signal mask */ |
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#endif |
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#ifndef __ASSEMBLY__ |
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typedef void __signalfn_t(int); |
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typedef __signalfn_t __user *__sighandler_t; |
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typedef void __restorefn_t(void); |
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typedef __restorefn_t __user *__sigrestore_t; |
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#define SIG_DFL ((__force __sighandler_t)0) /* default signal handling */ |
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#define SIG_IGN ((__force __sighandler_t)1) /* ignore signal */ |
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#define SIG_ERR ((__force __sighandler_t)-1) /* error return from signal */ |
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#endif |
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#endif /* __ASM_GENERIC_SIGNAL_DEFS_H */
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