xnu-344.tar.gz

[apple/xnu.git] / bsd / sys / signal.h

diff --git a/bsd/sys/signal.h b/bsd/sys/signal.h
index 136b3d1f0779754e281f96080b36b86b7547d5d7..36d5872eb4afbeeaac8a62e2d48f09f7ee8ce00f 100644 (file)
--- a/bsd/sys/signal.h
+++ b/bsd/sys/signal.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.

  *
  * @APPLE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_LICENSE_HEADER_START@
  * 


@@ -63,6 +63,8 @@
 #ifndef        _SYS_SIGNAL_H_
 #define        _SYS_SIGNAL_H_
 
 #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
 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
 #define NSIG   32              /* counting 0; could be 33 (mask is 1-32) */
 #endif


@@ -131,22 +133,113 @@
 #ifndef _ANSI_SOURCE
 typedef unsigned int sigset_t;
 
 #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 {
 /*
  * 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 */
 };
        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 */
 #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        SA_USERTRAMP    0x0100  /* do not bounce off kernel's sigtramp */
 #endif
 #define SA_NOCLDSTOP   0x0008  /* do not generate SIGCHLD on child stop */


@@ -158,6 +251,13 @@ struct     sigaction {
 #define        SIG_UNBLOCK     2       /* unblock specified signal set */
 #define        SIG_SETMASK     3       /* set specified signal set */
 
 #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 */
 #if !defined(_POSIX_SOURCE)
 #include <sys/cdefs.h>
 typedef        void (*sig_t) __P((int));       /* type of signal function */


@@ -170,6 +270,11 @@ struct     sigaltstack {
        int     ss_size;                /* signal stack length */
        int     ss_flags;               /* SA_DISABLE and/or SA_ONSTACK */
 };
        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 */
 
 #define        MINSIGSTKSZ     8192                    /* minimum allowable stack */
 #define        SIGSTKSZ        (MINSIGSTKSZ + 32768)   /* recommended stack size */
 


@@ -178,13 +283,18 @@ struct    sigaltstack {
  * Signal vector "template" used in sigvec call.
  */
 struct sigvec {
  * 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 */
        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 sv_onstack sv_flags    /* isn't compatibility wonderful! */
 
 /*


@@ -202,14 +312,16 @@ struct    sigstack {
 #define sigmask(m)     (1 << ((m)-1))
 
 #ifdef KERNEL
 #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
 #endif /* KERNEL */
 
 #define        BADSIG          SIG_ERR