/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#ifndef _SYS_SIGNAL_H_
#define _SYS_SIGNAL_H_
+#include <sys/appleapiopts.h>
+
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
#define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
#endif
#ifndef _ANSI_SOURCE
typedef unsigned int sigset_t;
+union sigval {
+ /* Members as suggested by Annex C of POSIX 1003.1b. */
+ int sigval_int;
+ void *sigval_ptr;
+};
+
+#define SIGEV_NONE 0 /* No async notification */
+#ifdef __APPLE_API_PRIVATE
+#define SIGEV_SIGNAL 1 /* Generate a queued signal */
+#define SIGEV_THREAD 3 /* A notification function will be called to perfrom notification */
+#endif /*__APPLE_API_PRIVATE */
+
+typedef struct __siginfo {
+ int si_signo; /* signal number */
+ int si_errno; /* errno association */
+ int si_code; /* signal code */
+ int si_pid; /* sending process */
+ unsigned int si_uid; /* sender's ruid */
+ int si_status; /* exit value */
+ void *si_addr; /* faulting instruction */
+ union sigval si_value; /* signal value */
+ long si_band; /* band event for SIGPOLL */
+ int pad[7]; /* RFU */
+} siginfo_t;
+
+/*
+ * Incase of SIGILL and SIGFPE, si_addr contains the address of
+ * faulting instruction.
+ * Incase of SIGSEGV and SIGBUS, si_addr contains address of
+ * faulting memory reference.
+ * Incase of SIGCHLD, si_pid willhave child process ID,
+ * si_status will contain exit value or signal.
+ * si_uid contains real user ID of the process that sent the signal
+ */
+
+/* Values for si_code */
+
+/* Codes for SIGILL */
+#define ILL_NOOP 0 /* if only I knew... */
+#define ILL_ILLOPC 1 /* illegal opcode */
+#define ILL_ILLTRP 2 /* illegal trap */
+#define ILL_PRVOPC 3 /* privileged opcode */
+
+/* Codes for SIGFPE */
+#define FPE_NOOP 0 /* if only I knew... */
+#define FPE_FLTDIV 1 /* floating point divide by zero */
+#define FPE_FLTOVF 2 /* floating point overflow */
+#define FPE_FLTUND 3 /* floating point underflow */
+#define FPE_FLTRES 4 /* floating point inexact result */
+#define FPE_FLTINV 5 /* invalid floating point operation */
+
+/* Codes for SIGSEGV */
+#define SEGV_NOOP 0 /* if only I knew... */
+#define SEGV_MAPERR 1 /* address not mapped to object */
+#define SEGV_ACCERR 2 /* invalid permissions for mapped to object */
+
+/* Codes for SIGBUS */
+#define BUS_NOOP 0 /* if only I knew... */
+#define BUS_ADRALN 1 /* invalid address alignment */
+
+/* Codes for SIGCHLD */
+#define CLD_NOOP 0 /* if only I knew... */
+#define CLD_EXITED 1 /* child has exited */
+#define CLD_KILLED 2
+ /* child has terminated abnormally and did not create a core file */
+#define CLD_DUMPED 3
+ /* child has terminated abnormally and create a core file */
+#define CLD_TRAPPED 4 /* traced child has trapped */
+#define CLD_STOPPED 5 /* child has stopped */
+#define CLD_CONTINUED 6 /* stopped child has continued */
+
+/* union for signal handlers */
+union __sigaction_u {
+ void (*__sa_handler)(int);
+ void (*__sa_sigaction)(int, struct __siginfo *,
+ void *);
+};
+
+/* Signal vector template for Kernel user boundary */
+struct __sigaction {
+ union __sigaction_u __sigaction_u; /* signal handler */
+ void (*sa_tramp)(void *, int, int, siginfo_t *, void *);
+ sigset_t sa_mask; /* signal mask to apply */
+ int sa_flags; /* see signal options below */
+};
+
/*
* Signal vector "template" used in sigaction call.
*/
struct sigaction {
-#if defined(__cplusplus)
- void (*sa_handler)(int); /* signal handler */
-#else
- void (*sa_handler)(); /* signal handler */
-#endif /* __cplusplus */
+ union __sigaction_u __sigaction_u; /* signal handler */
sigset_t sa_mask; /* signal mask to apply */
int sa_flags; /* see signal options below */
};
+/* if SA_SIGINFO is set, sa_sigaction is to be used instead of sa_handler. */
+#define sa_handler __sigaction_u.__sa_handler
+#define sa_sigaction __sigaction_u.__sa_sigaction
+
+
#if !defined(_POSIX_SOURCE)
#define SA_ONSTACK 0x0001 /* take signal on signal stack */
#define SA_RESTART 0x0002 /* restart system on signal return */
#define SA_DISABLE 0x0004 /* disable taking signals on alternate stack */
+#define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */
+#define SA_NODEFER 0x0010 /* don't mask the signal we're delivering */
+#define SA_NOCLDWAIT 0x0020 /* don't keep zombies around */
+#define SA_SIGINFO 0x0040 /* signal handler with SA_SIGINFO args */
#define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */
#endif
#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
#define SIG_UNBLOCK 2 /* unblock specified signal set */
#define SIG_SETMASK 3 /* set specified signal set */
+/* POSIX 1003.1b required values. */
+#define SI_USER 0x10001
+#define SI_QUEUE 0x10002
+#define SI_TIMER 0x10003
+#define SI_ASYNCIO 0x10004
+#define SI_MESGQ 0x10005
+
#if !defined(_POSIX_SOURCE)
#include <sys/cdefs.h>
typedef void (*sig_t) __P((int)); /* type of signal function */
int ss_size; /* signal stack length */
int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */
};
+
+typedef struct sigaltstack stack_t;
+
+#define SS_ONSTACK 0x0001 /* take signal on signal stack */
+#define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
#define MINSIGSTKSZ 8192 /* minimum allowable stack */
#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
* Signal vector "template" used in sigvec call.
*/
struct sigvec {
- void (*sv_handler)(); /* signal handler */
+ void (*sv_handler)(int); /* signal handler */
int sv_mask; /* signal mask to apply */
int sv_flags; /* see signal options below */
};
#define SV_ONSTACK SA_ONSTACK
#define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
+#define SV_RESETHAND SA_RESETHAND
+#define SV_NODEFER SA_NODEFER
+#define SV_NOCLDSTOP SA_NOCLDSTOP
+#define SV_SIGINFO SA_SIGINFO
+
#define sv_onstack sv_flags /* isn't compatibility wonderful! */
/*
#define sigmask(m) (1 << ((m)-1))
#ifdef KERNEL
- /*
- * signals delivered on a per-thread basis.
- */
- #define threadmask (sigmask(SIGILL)|sigmask(SIGTRAP)|\
- sigmask(SIGIOT)|sigmask(SIGEMT)|\
- sigmask(SIGFPE)|sigmask(SIGBUS)|\
- sigmask(SIGSEGV)|sigmask(SIGSYS)|\
- sigmask(SIGPIPE))
+#ifdef __APPLE_API_PRIVATE
+/*
+ * signals delivered on a per-thread basis.
+ */
+#define threadmask (sigmask(SIGILL)|sigmask(SIGTRAP)|\
+ sigmask(SIGIOT)|sigmask(SIGEMT)|\
+ sigmask(SIGFPE)|sigmask(SIGBUS)|\
+ sigmask(SIGSEGV)|sigmask(SIGSYS)|\
+ sigmask(SIGPIPE))
+#endif /* __APPLE_API_PRIVATE */
#endif /* KERNEL */
#define BADSIG SIG_ERR
projects / apple / xnu.git / blobdiff