1 /* 2 * include/asm-s390/signal.h 3 * 4 * S390 version 5 * 6 * Derived from "include/asm-i386/signal.h" 7 */ 8 9 #ifndef _ASMS390_SIGNAL_H 10 #define _ASMS390_SIGNAL_H 11 12 #include <linux/types.h> 13 14 /* Avoid too many header ordering problems. */ 15 struct siginfo; 16 17 #ifdef __KERNEL__ 18 /* Most things should be clean enough to redefine this at will, if care 19 is taken to make libc match. */ 20 #include <asm/sigcontext.h> 21 #define _NSIG _SIGCONTEXT_NSIG 22 #define _NSIG_BPW _SIGCONTEXT_NSIG_BPW 23 #define _NSIG_WORDS _SIGCONTEXT_NSIG_WORDS 24 25 typedef unsigned long old_sigset_t; /* at least 32 bits */ 26 27 typedef struct { 28 unsigned long sig[_NSIG_WORDS]; 29 } sigset_t; 30 31 #else 32 /* Here we must cater to libcs that poke about in kernel headers. */ 33 34 #define NSIG 32 35 typedef unsigned long sigset_t; 36 37 #endif /* __KERNEL__ */ 38 39 #define SIGHUP 1 40 #define SIGINT 2 41 #define SIGQUIT 3 42 #define SIGILL 4 43 #define SIGTRAP 5 44 #define SIGABRT 6 45 #define SIGIOT 6 46 #define SIGBUS 7 47 #define SIGFPE 8 48 #define SIGKILL 9 49 #define SIGUSR1 10 50 #define SIGSEGV 11 51 #define SIGUSR2 12 52 #define SIGPIPE 13 53 #define SIGALRM 14 54 #define SIGTERM 15 55 #define SIGSTKFLT 16 56 #define SIGCHLD 17 57 #define SIGCONT 18 58 #define SIGSTOP 19 59 #define SIGTSTP 20 60 #define SIGTTIN 21 61 #define SIGTTOU 22 62 #define SIGURG 23 63 #define SIGXCPU 24 64 #define SIGXFSZ 25 65 #define SIGVTALRM 26 66 #define SIGPROF 27 67 #define SIGWINCH 28 68 #define SIGIO 29 69 #define SIGPOLL SIGIO 70 /* 71 #define SIGLOST 29 72 */ 73 #define SIGPWR 30 74 #define SIGSYS 31 75 #define SIGUNUSED 31 76 77 /* These should not be considered constants from userland. */ 78 #define SIGRTMIN 32 79 #define SIGRTMAX (_NSIG-1) 80 81 /* 82 * SA_FLAGS values: 83 * 84 * SA_ONSTACK indicates that a registered stack_t will be used. 85 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the 86 * SA_RESTART flag to get restarting signals (which were the default long ago) 87 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. 88 * SA_RESETHAND clears the handler when the signal is delivered. 89 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. 90 * SA_NODEFER prevents the current signal from being masked in the handler. 91 * 92 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single 93 * Unix names RESETHAND and NODEFER respectively. 94 */ 95 #define SA_NOCLDSTOP 0x00000001 96 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */ 97 #define SA_SIGINFO 0x00000004 98 #define SA_ONSTACK 0x08000000 99 #define SA_RESTART 0x10000000 100 #define SA_NODEFER 0x40000000 101 #define SA_RESETHAND 0x80000000 102 103 #define SA_NOMASK SA_NODEFER 104 #define SA_ONESHOT SA_RESETHAND 105 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */ 106 107 #define SA_RESTORER 0x04000000 108 109 /* 110 * sigaltstack controls 111 */ 112 #define SS_ONSTACK 1 113 #define SS_DISABLE 2 114 115 #define MINSIGSTKSZ 2048 116 #define SIGSTKSZ 8192 117 118 #ifdef __KERNEL__ 119 120 /* 121 * These values of sa_flags are used only by the kernel as part of the 122 * irq handling routines. 123 * 124 * SA_INTERRUPT is also used by the irq handling routines. 125 * SA_SHIRQ is for shared interrupt support on PCI and EISA. 126 */ 127 #define SA_PROBE SA_ONESHOT 128 #define SA_SAMPLE_RANDOM SA_RESTART 129 #define SA_SHIRQ 0x04000000 130 #define SA_DOPATHGROUP 0x00100000 131 #define SA_FORCE 0x00200000 132 #endif 133 134 #define SIG_BLOCK 0 /* for blocking signals */ 135 #define SIG_UNBLOCK 1 /* for unblocking signals */ 136 #define SIG_SETMASK 2 /* for setting the signal mask */ 137 138 /* Type of a signal handler. */ 139 typedef void (*__sighandler_t)(int); 140 141 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ 142 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ 143 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ 144 145 #ifdef __KERNEL__ 146 struct old_sigaction { 147 __sighandler_t sa_handler; 148 old_sigset_t sa_mask; 149 unsigned long sa_flags; 150 void (*sa_restorer)(void); 151 }; 152 153 struct sigaction { 154 __sighandler_t sa_handler; 155 unsigned long sa_flags; 156 void (*sa_restorer)(void); 157 sigset_t sa_mask; /* mask last for extensibility */ 158 }; 159 160 struct k_sigaction { 161 struct sigaction sa; 162 }; 163 #else 164 /* Here we must cater to libcs that poke about in kernel headers. */ 165 166 struct sigaction { 167 union { 168 __sighandler_t _sa_handler; 169 void (*_sa_sigaction)(int, struct siginfo *, void *); 170 } _u; 171 sigset_t sa_mask; 172 unsigned long sa_flags; 173 void (*sa_restorer)(void); 174 }; 175 176 #define sa_handler _u._sa_handler 177 #define sa_sigaction _u._sa_sigaction 178 179 #endif /* __KERNEL__ */ 180 181 typedef struct sigaltstack { 182 void *ss_sp; 183 int ss_flags; 184 size_t ss_size; 185 } stack_t; 186 187 188 #endif 189