wstat(5)                                                    wstat(5)


       NAME
             wstat - wait status

       SYNOPSIS
             #include <sys/wait.h>

       DESCRIPTION
             When a process waits for status from its children via either
             the wait or waitpid function, the status returned may be
             evaluated with the following macros, defined in sys/wait.h.
             These macros evaluate to integral expressions.  The stat
             argument to these macros is the integer value returned from
             wait or waitpid.

                   WIFEXITED(stat)     Evaluates to a non-zero value if
                                       status was returned for a child
                                       process that terminated normally.

                   WEXITSTATUS(stat)   If the value of WIFEXITED(stat) is
                                       non-zero, this macro evaluates to
                                       the exit code that the child process
                                       passed to _exit or exit, or the
                                       value that the child process
                                       returned from main.

                   WIFSIGNALED(stat)   Evaluates to a non-zero value if
                                       status was returned for a child
                                       process that terminated due to the
                                       receipt of a signal.

                   WTERMSIG(stat)      If the value of WIFSIGNALED(stat) is
                                       non-zero, this macro evaluates to
                                       the number of the signal that caused
                                       the termination of the child
                                       process.

                   WIFSTOPPED(stat)    Evaluates to a non-zero value if
                                       status was returned for a child
                                       process that is currently stopped.

                   WSTOPSIG(stat)      If the value of WIFSTOPPED(stat) is
                                       non-zero, this macro evaluates to
                                       the number of the signal that caused
                                       the child process to stop.




                           Copyright 1994 Novell, Inc.               Page 1

      wstat(5)                                                    wstat(5)


                  WIFCONTINUED(stat)  Evaluates to a non-zero value if
                                      status was returned for a child
                                      process that has continued.

                  WCOREDUMP(stat)     If the value of WIFSIGNALED(stat) is
                                      non-zero, this macro evaluates to a
                                      non-zero value if a core image of
                                      the terminated child was created.

      REFERENCES
            exit(2), wait(2), waitpid(2)





































                          Copyright 1994 Novell, Inc.               Page 2