include/sys/sigtypes.h

   1 #ifndef _SYS_SIGTYPES_H_
   2 #define _SYS_SIGTYPES_H_
   3
   4 /*
   5  * This header file defines various signal-related types.  We also keep
   6  * the macros to manipulate sigset_t here, to encapsulate knowledge of
   7  * its internals.
   8  */
   9
  10 #include <sys/featuretest.h>
  11 #include <machine/int_types.h>
  12 #include <machine/ansi.h>
  13
  14 #ifdef  _BSD_SIZE_T_
  15 typedef _BSD_SIZE_T_    size_t;
  16 #undef  _BSD_SIZE_T_
  17 #endif
  18
  19 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
  20     defined(_NETBSD_SOURCE)
  21 typedef unsigned long sigset_t;
  22
  23 /*
  24  * Macro for manipulating signal masks.
  25  */
  26 #ifndef __minix
  27 #define __sigmask(n)            (1 << (((unsigned int)(n) - 1)))
  28 #else /* __minix */
  29 #define __sigmask(n)            (1 << (unsigned int)(n))
  30 #endif /* !__minix */
  31 #define __sigaddset(s, n)                                       \
  32         do {                                                    \
  33                 *(s) = *(unsigned long *)(s) | __sigmask(n);    \
  34         } while(0)
  35 #define __sigdelset(s, n)                                       \
  36         do {                                                    \
  37                 *(s) = *(unsigned long *)(s) & ~__sigmask(n);   \
  38         } while (0)
  39
  40 #define __sigismember(s, n)     (((*(const unsigned long *)(s)) & __sigmask(n)) != 0)
  41 #define __sigemptyset(s)        (*(unsigned long *)(s) = 0)
  42 #define __sigsetequal(s1, s2)   (*(unsigned long *)(s1) = *(unsigned long *)(s2))
  43 #define __sigfillset(s)         (*(long *)(s) = -1L)
  44 #define __sigplusset(s, t)                                              \
  45         do {                                                            \
  46                 *(t) = *(unsigned long *)(t) | *(unsigned long *)(s);   \
  47         } while (0)
  48 #define __sigminusset(s, t)                                     \
  49         do {                                                    \
  50                 *(t) = *(unsigned long *)(t) & ~*(unsigned long *)(s);  \
  51         } while (0)
  52 #define __sigandset(s, t)                                       \
  53         do {                                                    \
  54                 *(t) = *(unsigned long *)(t) & *(unsigned long *)(s);   \
  55         } while (0)
  56
  57 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
  58     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
  59 typedef struct
  60 #if defined(_NETBSD_SOURCE)
  61                sigaltstack
  62 #endif /* _NETBSD_SOURCE */
  63                            {
  64         void    *ss_sp;                 /* signal stack base */
  65         size_t  ss_size;                /* signal stack length */
  66         int     ss_flags;               /* SS_DISABLE and/or SS_ONSTACK */
  67 } stack_t;
  68
  69 #endif /* _XOPEN_SOURCE_EXTENDED || XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
  70
  71 #endif  /* _POSIX_C_SOURCE || _XOPEN_SOURCE || ... */
  72 #endif  /* !_SYS_SIGTYPES_H_ */