diplodocus.org Git - nmh/blob - docs/historical/mh-6.8.5/sbr/m_sync.c

   1 /* m_sync.c - synchronize message sequences */
   2 #ifndef lint
   3 static char ident[] = "@(#)$Id: m_sync.c,v 1.8 1992/12/15 00:20:22 jromine Exp $";
   4 #endif  /* lint */
   5
   6 #include "../h/mh.h"
   7 #include <stdio.h>
   8 #include <signal.h>
   9 #ifndef sigmask
  10 #define sigmask(s)      (1 << ((s) - 1))
  11 #endif  /* not sigmask */
  12
  13
  14 /* decision logic
  15     1.  public and folder readonly: make it private
  16     2a. public: add it to the sequences file
  17     2b. private: add it to the profile
  18  */
  19
  20
  21 void m_sync (mp)
  22 register struct msgs *mp;
  23 {
  24     int     bits;
  25     register int    i;
  26     register char  *cp;
  27     char    flags,
  28             attr[BUFSIZ],
  29             seq[BUFSIZ * 2];
  30     register FILE  *fp;
  31 #ifndef BSD42
  32     TYPESIG (*hstat) (), (*istat) (), (*qstat) (), (*tstat) ();
  33 #else   /* BSD42 */
  34     int     smask;
  35 #endif  /* BSD42 */
  36
  37     if (!(mp -> msgflags & SEQMOD))
  38         return;
  39     mp -> msgflags &= ~SEQMOD;
  40
  41     m_getdefs ();
  42     (void) sprintf (seq, "%s/%s", mp -> foldpath, mh_seq);
  43     bits = FFATTRSLOT;
  44     fp = NULL;
  45
  46     flags = mp -> msgflags;
  47     if (mh_seq == NULL || *mh_seq == 0)
  48         mp -> msgflags |= READONLY;
  49
  50     for (i = 0; mp -> msgattrs[i]; i++) {
  51         (void) sprintf (attr, "atr-%s-%s", mp -> msgattrs[i], mp -> foldpath);
  52         if (mp -> msgflags & READONLY
  53                 || mp -> attrstats & (1 << (bits + i))) {
  54     priv: ;
  55             if (cp = m_seq (mp, mp -> msgattrs[i]))
  56                 m_replace (attr, cp);
  57             else
  58                 (void) m_delete (attr);
  59         }
  60         else {
  61             (void) m_delete (attr);
  62             if ((cp = m_seq (mp, mp -> msgattrs[i])) == NULL)
  63                 continue;
  64             if (fp == NULL) {
  65                 if ((fp = fopen (seq, "w")) == NULL
  66                         && (unlink (seq) == NOTOK ||
  67                             (fp = fopen (seq, "w")) == NULL)) {
  68                     admonish (attr, "unable to write");
  69                     goto priv;
  70                 }
  71 #ifndef BSD42
  72                 hstat = signal (SIGHUP, SIG_IGN);
  73                 istat = signal (SIGINT, SIG_IGN);
  74                 qstat = signal (SIGQUIT, SIG_IGN);
  75                 tstat = signal (SIGTERM, SIG_IGN);
  76 #else   /* BSD42 */
  77                 smask = sigblock (sigmask (SIGHUP) | sigmask (SIGINT)
  78                                     | sigmask (SIGQUIT) | sigmask (SIGTERM));
  79 #endif  /* BSD42 */
  80             }
  81             fprintf (fp, "%s: %s\n", mp -> msgattrs[i], cp);
  82         }
  83     }
  84
  85     if (fp) {
  86         (void) fclose (fp);
  87 #ifndef BSD42
  88         (void) signal (SIGHUP, hstat);
  89         (void) signal (SIGINT, istat);
  90         (void) signal (SIGQUIT, qstat);
  91         (void) signal (SIGTERM, tstat);
  92 #else   /* BSD42 */
  93         (void) sigsetmask (smask);
  94 #endif  /* BSD42 */
  95     }
  96     else
  97         if (!(mp -> msgflags & READONLY))
  98             (void) unlink (seq);
  99
 100     mp -> msgflags = flags;
 101 }