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Annotation of 43BSDReno/contrib/mh/sbr/pidwait.c, revision 1.1.1.1

1.1       root        1: /* pidwait.c - wait for child to exit */
                      2: 
                      3: #include "../h/mh.h"
                      4: #include <signal.h>
                      5: #include <stdio.h>
                      6: #if defined(POSIX) || defined(BSD42)
                      7: #include <sys/wait.h>
                      8: #endif POSIX or BSD42
                      9: 
                     10: 
                     11: pidwait(id, sigsok)
                     12:        register int id, sigsok;
                     13: {
                     14:     register int    pid;
                     15:     SIGDECL (*hstat)(), (*istat)(), (*qstat)(), (*tstat)();
                     16: #ifndef        BSD42
                     17:     int     status;
                     18: #else  BSD42
                     19:     union wait status;
                     20: #endif BSD42
                     21: 
                     22:     if (sigsok == NOTOK) {
                     23:        hstat = signal (SIGHUP, SIG_IGN);
                     24:        istat = signal (SIGINT, SIG_IGN);
                     25:        qstat = signal (SIGQUIT, SIG_IGN);
                     26:        tstat = signal (SIGTERM, SIG_IGN);
                     27:     }
                     28: 
                     29: #ifdef POSIX
                     30:     pid = waitpid(id, &status, 0);
                     31: #else
                     32:     while ((pid = wait (&status)) != NOTOK && pid != id)
                     33:        continue;
                     34: #endif
                     35: 
                     36:     if (sigsok == NOTOK) {
                     37:        (void) signal (SIGHUP, hstat);
                     38:        (void) signal (SIGINT, istat);
                     39:        (void) signal (SIGQUIT, qstat);
                     40:        (void) signal (SIGTERM, tstat);
                     41:     }
                     42: 
                     43: #if defined(POSIX) || !defined(BSD42)
                     44:     return (pid == NOTOK ? NOTOK : status);
                     45: #else
                     46:     return (pid == NOTOK ? NOTOK : status.w_status);
                     47: #endif
                     48: }
                     49: 
                     50: 

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