| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _LINUX_SIGNAL_TYPES_H |
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| 3 | #define _LINUX_SIGNAL_TYPES_H |
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| 4 | |
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| 5 | /* |
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| 6 | * Basic signal handling related data type definitions: |
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| 7 | */ |
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| 8 | |
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| 9 | #include <linux/types.h> |
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| 10 | #include <uapi/linux/signal.h> |
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| 11 | |
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| 12 | typedef struct kernel_siginfo { |
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| 13 | __SIGINFO; |
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| 14 | } kernel_siginfo_t; |
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| 15 | |
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| 16 | struct ucounts; |
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| 17 | |
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| 18 | /* |
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| 19 | * Real Time signals may be queued. |
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| 20 | */ |
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| 21 | |
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| 22 | struct sigqueue { |
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| 23 | struct list_head list; |
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| 24 | int flags; |
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| 25 | kernel_siginfo_t info; |
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| 26 | struct ucounts *ucounts; |
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| 27 | }; |
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| 28 | |
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| 29 | /* flags values. */ |
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| 30 | #define SIGQUEUE_PREALLOC 1 |
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| 31 | |
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| 32 | struct sigpending { |
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| 33 | struct list_head list; |
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| 34 | sigset_t signal; |
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| 35 | }; |
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| 36 | |
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| 37 | struct sigaction { |
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| 38 | #ifndef __ARCH_HAS_IRIX_SIGACTION |
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| 39 | __sighandler_t sa_handler; |
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| 40 | unsigned long sa_flags; |
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| 41 | #else |
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| 42 | unsigned int sa_flags; |
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| 43 | __sighandler_t sa_handler; |
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| 44 | #endif |
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| 45 | #ifdef __ARCH_HAS_SA_RESTORER |
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| 46 | __sigrestore_t sa_restorer; |
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| 47 | #endif |
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| 48 | sigset_t sa_mask; /* mask last for extensibility */ |
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| 49 | }; |
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| 50 | |
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| 51 | struct k_sigaction { |
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| 52 | struct sigaction sa; |
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| 53 | #ifdef __ARCH_HAS_KA_RESTORER |
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| 54 | __sigrestore_t ka_restorer; |
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| 55 | #endif |
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| 56 | }; |
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| 57 | |
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| 58 | #ifdef CONFIG_OLD_SIGACTION |
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| 59 | struct old_sigaction { |
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| 60 | __sighandler_t sa_handler; |
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| 61 | old_sigset_t sa_mask; |
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| 62 | unsigned long sa_flags; |
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| 63 | __sigrestore_t sa_restorer; |
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| 64 | }; |
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| 65 | #endif |
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| 66 | |
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| 67 | struct ksignal { |
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| 68 | struct k_sigaction ka; |
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| 69 | kernel_siginfo_t info; |
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| 70 | int sig; |
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| 71 | }; |
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| 72 | |
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| 73 | /* Used to kill the race between sigaction and forced signals */ |
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| 74 | #define SA_IMMUTABLE 0x00800000 |
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| 75 | |
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| 76 | #ifndef __ARCH_UAPI_SA_FLAGS |
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| 77 | #ifdef SA_RESTORER |
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| 78 | #define __ARCH_UAPI_SA_FLAGS SA_RESTORER |
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| 79 | #else |
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| 80 | #define __ARCH_UAPI_SA_FLAGS 0 |
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| 81 | #endif |
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| 82 | #endif |
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| 83 | |
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| 84 | #define UAPI_SA_FLAGS \ |
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| 85 | (SA_NOCLDSTOP | SA_NOCLDWAIT | SA_SIGINFO | SA_ONSTACK | SA_RESTART | \ |
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| 86 | SA_NODEFER | SA_RESETHAND | SA_EXPOSE_TAGBITS | __ARCH_UAPI_SA_FLAGS) |
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| 87 | |
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| 88 | #endif /* _LINUX_SIGNAL_TYPES_H */ |
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| 89 | |
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