4.3BSD - /usr/src/usr.bin/uucp/gnxseq.c

   1: #ifndef lint
   2: static char sccsid[] = "@(#)gnxseq.c	5.4 (Berkeley) 6/20/85";
   3: #endif
   4: 
   5: #include "uucp.h"
   6: #ifdef BSD4_2
   7: #include <sys/time.h>
   8: #else sane
   9: #include <time.h>
  10: #endif sane
  11: 
  12: /*LINTLIBRARY*/
  13: 
  14: #ifdef GNXSEQ
  15: 
  16: /*
  17:  *	get next conversation sequence number
  18:  *
  19:  *	return - 0 no entry | >0 sequence number
  20:  */
  21: 
  22: gnxseq(rmtname)
  23: char *rmtname;
  24: {
  25:     int count = 0, ct, ret, i;
  26:     register struct tm *tp;
  27:     extern struct tm *localtime();
  28:     time_t clock;
  29:     register FILE *fp0, *fp1;
  30:     char buf[BUFSIZ], name[NAMESIZE];
  31: 
  32:     if (access(SQFILE, 0) != 0) /* nothing to do here */
  33:         return(0);
  34: 
  35:     for (i = 0; i < 5; i++) {
  36:         if ((ret = ulockf(SQLOCK, (time_t)  SQTIME)) == 0)
  37:             break;
  38:         sleep(5);
  39:     }
  40:     if (ret != 0) {
  41:         logent("CAN'T LOCK", SQLOCK);
  42:         DEBUG(4, "can't lock %s\n", SQLOCK);
  43:         return(0);
  44:     }
  45:     if ((fp0 = fopen(SQFILE, "r")) == NULL)
  46:         return(0);
  47:     if ((fp1 = fopen(SQTMP, "w")) == NULL) {
  48:         fclose(fp0);
  49:         return(0);
  50:     }
  51:     chmod(SQTMP, 0400);
  52: 
  53:     while (fgets(buf, BUFSIZ, fp0) != NULL) {
  54:         ret = sscanf(buf, "%s%d", name, &ct);
  55:         if (ret < 2)
  56:             ct = 0;
  57:         name[MAXBASENAME] = '\0';
  58:         if (ct > 9998)
  59:             ct = 0;
  60:         if (strncmp(rmtname, name, MAXBASENAME) != SAME) {
  61:             fputs(buf, fp1);
  62:             continue;
  63:         }
  64: 
  65:         /*  found name  */
  66:         count = ++ct;
  67:         time(&clock);
  68:         tp = localtime(&clock);
  69: #ifdef USG
  70:         fprintf(fp1, "%s %d %d/%d-%2.2d:%2.2d\n", name, ct,
  71:           tp->tm_mon + 1, tp->tm_mday, tp->tm_hour,
  72:           tp->tm_min);
  73: #endif
  74: #ifndef USG
  75:         fprintf(fp1, "%s %d %d/%d-%02d:%02d\n", name, ct,
  76:           tp->tm_mon + 1, tp->tm_mday, tp->tm_hour,
  77:           tp->tm_min);
  78: #endif
  79:         while (fgets(buf, BUFSIZ, fp0) != NULL)
  80:             fputs(buf, fp1);
  81:     }
  82:     fclose(fp0);
  83:     fclose(fp1);
  84:     if (count == 0) {
  85:         rmlock(SQLOCK);
  86:         unlink(SQTMP);
  87:     }
  88:     return(count);
  89: }
  90: 
  91: 
  92: /***
  93:  *	cmtseq()	commit sequence update
  94:  *
  95:  *	return  0  ok | other - link failed
  96:  */
  97: 
  98: cmtseq()
  99: {
 100:     register int ret;
 101: 
 102:     if ((ret = access(SQTMP, 04)) != 0) {
 103:         rmlock(SQLOCK);
 104:         return(0);
 105:     }
 106:     unlink(SQFILE);
 107:     ret = link(SQTMP, SQFILE);
 108:     unlink(SQTMP);
 109:     rmlock(SQLOCK);
 110:     return(ret);
 111: }
 112: 
 113: /***
 114:  *	ulkseq()	unlock sequence file
 115:  */
 116: 
 117: ulkseq()
 118: {
 119:     unlink(SQTMP);
 120:     rmlock(SQLOCK);
 121: }
 122: #endif GNXSEQ

Defined functions

Defined variables