ksh_wait.h

   1 /* Wrapper around the ugly sys/wait includes/ifdefs */
   2 /* $Id$ */
   3
   4 #ifdef HAVE_SYS_WAIT_H
   5 # include <sys/wait.h>
   6 #endif
   7
   8 #ifndef POSIX_SYS_WAIT
   9 /* Get rid of system macros (which probably use union wait) */
  10 # undef WIFCORED
  11 # undef WIFEXITED
  12 # undef WEXITSTATUS
  13 # undef WIFSIGNALED
  14 # undef WTERMSIG
  15 # undef WIFSTOPPED
  16 # undef WSTOPSIG
  17 #endif /* POSIX_SYS_WAIT */
  18
  19 #ifndef WIFCORED
  20 # define WIFCORED(s)    ((s) & 0x80)
  21 #endif
  22 #define WSTATUS(s)      (s)
  23
  24 #ifndef WIFEXITED
  25 # define WIFEXITED(s)   (((s) & 0xff) == 0)
  26 #endif
  27 #ifndef WEXITSTATUS
  28 # define WEXITSTATUS(s) (((s) >> 8) & 0xff)
  29 #endif
  30 #ifndef WIFSIGNALED
  31 # define WIFSIGNALED(s) (((s) & 0xff) != 0 && ((s) & 0xff) != 0x7f)
  32 #endif
  33 #ifndef WTERMSIG
  34 # define WTERMSIG(s)    ((s) & 0x7f)
  35 #endif
  36 #ifndef WIFSTOPPED
  37 # define WIFSTOPPED(s)  (((s) & 0xff) == 0x7f)
  38 #endif
  39 #ifndef WSTOPSIG
  40 # define WSTOPSIG(s)    (((s) >> 8) & 0xff)
  41 #endif
  42
  43 #if !defined(HAVE_WAITPID) && defined(HAVE_WAIT3)
  44   /* always used with p == -1 */
  45 # define ksh_waitpid(p, s, o)   wait3((s), (o), (struct rusage *) 0)
  46 #else /* !HAVE_WAITPID && HAVE_WAIT3 */
  47 # define ksh_waitpid(p, s, o)   waitpid((p), (s), (o))
  48 #endif /* !HAVE_WAITPID && HAVE_WAIT3 */