external/ibm-public/postfix/dist/src/global/mark_corrupt.c

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      mark_corrupt 3
   6 /* SUMMARY
   7 /*      mark queue file as corrupt
   8 /* SYNOPSIS
   9 /*      #include <mark_corrupt.h>
  10 /*
  11 /*      char    *mark_corrupt(src)
  12 /*      VSTREAM *src;
  13 /* DESCRIPTION
  14 /*      The \fBmark_corrupt\fR() routine marks the specified open
  15 /*      queue file as corrupt, and returns a suitable delivery status
  16 /*      so that the queue manager will do the right thing.
  17 /* LICENSE
  18 /* .ad
  19 /* .fi
  20 /*      The Secure Mailer license must be distributed with this software.
  21 /* AUTHOR(S)
  22 /*      Wietse Venema
  23 /*      IBM T.J. Watson Research
  24 /*      P.O. Box 704
  25 /*      Yorktown Heights, NY 10598, USA
  26 /*--*/
  27
  28 /* System library. */
  29
  30 #include <sys_defs.h>
  31 #include <sys/stat.h>
  32 #include <unistd.h>
  33
  34 /* Utility library. */
  35
  36 #include <msg.h>
  37 #include <vstream.h>
  38 #include <set_eugid.h>
  39
  40 /* Global library. */
  41
  42 #include <mail_queue.h>
  43 #include <mail_params.h>
  44 #include <deliver_request.h>
  45 #include <mark_corrupt.h>
  46
  47 /* mark_corrupt - mark queue file as corrupt */
  48
  49 int     mark_corrupt(VSTREAM *src)
  50 {
  51     const char *myname = "mark_corrupt";
  52     uid_t   saved_uid;
  53     gid_t   saved_gid;
  54
  55     /*
  56      * If not running as the mail system, change privileges first.
  57      */
  58     if ((saved_uid = geteuid()) != var_owner_uid) {
  59         saved_gid = getegid();
  60         set_eugid(var_owner_uid, var_owner_gid);
  61     }
  62
  63     /*
  64      * For now, the result value is -1; this may become a bit mask, or
  65      * something even more advanced than that, when the delivery status
  66      * becomes more than just done/deferred.
  67      */
  68     msg_warn("corrupted queue file: %s", VSTREAM_PATH(src));
  69     if (fchmod(vstream_fileno(src), MAIL_QUEUE_STAT_CORRUPT))
  70         msg_fatal("%s: fchmod %s: %m", myname, VSTREAM_PATH(src));
  71
  72     /*
  73      * Restore privileges.
  74      */
  75     if (saved_uid != var_owner_uid)
  76         set_eugid(saved_uid, saved_gid);
  77
  78     return (DEL_STAT_DEFER);
  79 }