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Annotation of 43BSDTahoe/new/rcs/src/snoop.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  *                     Logging of RCS commands co and ci
                      3:  */
                      4: #ifndef lint
                      5:  static char rcsid[]=
                      6:  "$Header: /usr/src/local/bin/rcs/src/RCS/snoop.c,v 4.3 87/12/18 11:46:52 narten Exp $ Purdue CS";
                      7: #endif
                      8: /*******************************************************************
                      9:  * This program appends argv[1] to the file SNOOPFILE.
                     10:  * To avoid overlaps, it creates a lockfile with name lock in the same
                     11:  * directory as SNOOPFILE. SNOOPFILE must be defined in the cc command. 
                     12:  * Prints an error message if lockfile doesn't get deleted after
                     13:  * MAXTRIES tries.
                     14:  *******************************************************************
                     15:  *
                     16:  * Copyright (C) 1982 by Walter F. Tichy
                     17:  *                       Purdue University
                     18:  *                       Computer Science Department
                     19:  *                       West Lafayette, IN 47907
                     20:  *
                     21:  * All rights reserved. No part of this software may be sold or distributed
                     22:  * in any form or by any means without the prior written permission of the 
                     23:  * author.
                     24:  * Report problems and direct all inquiries to Tichy@purdue (ARPA net).
                     25:  */
                     26: 
                     27: 
                     28: /* $Log:       snoop.c,v $
                     29:  * Revision 4.3  87/12/18  11:46:52  narten
                     30:  * more lint cleanups (Guy Harris)
                     31:  * 
                     32:  * Revision 4.2  87/10/18  10:41:47  narten
                     33:  * Changing version numbers. Changes relative to 1.1 actually relative to 
                     34:  * 4.1
                     35:  * 
                     36:  * Revision 1.2  87/09/24  14:01:41  narten
                     37:  * Sources now pass through lint (if you ignore printf/sprintf/fprintf 
                     38:  * warnings)
                     39:  * 
                     40:  * Revision 1.1  84/01/23  14:50:49  kcs
                     41:  * Initial revision
                     42:  * 
                     43:  * Revision 4.1  83/03/28  13:23:42  wft
                     44:  * No change; just new revision number.
                     45:  * 
                     46:  * Revision 3.2  82/12/04  17:14:31  wft
                     47:  * Added rcsbase.h, changed SNOOPDIR to SNOOPFILE, reintroduced
                     48:  * error message in case of permanent locking.
                     49:  * 
                     50:  * Revision 3.1  82/10/18  21:22:03  wft
                     51:  * Number of polls now 20, no error message if critical section can't
                     52:  * be entered.
                     53:  * 
                     54:  * Revision 2.3  82/07/01  23:49:28  wft
                     55:  * changed copyright notice only.
                     56:  * 
                     57:  * Revision 2.2  82/06/03  20:00:10  wft
                     58:  * changed name from rcslog to snoop, replaced LOGDIR with SNOOPDIR.
                     59:  * 
                     60:  * Revision 2.1  82/05/06  17:55:54  wft
                     61:  * Initial revision
                     62:  *
                     63:  */
                     64: 
                     65: 
                     66: #include "rcsbase.h"
                     67: #define fflsbuf _flsbuf
                     68: /* undo redefinition of putc in rcsbase.h */
                     69: 
                     70: char  lockfname[NCPPN];
                     71: FILE * logfile;
                     72: int lockfile;
                     73: 
                     74: #define MAXTRIES 20
                     75: 
                     76: main(argc,argv)
                     77: int argc; char * argv[];
                     78: /* writes argv[1] to SNOOPFILE and appends a newline. Invoked as follows:
                     79:  * rcslog logmessage
                     80:  */
                     81: {       int tries;
                     82:         register char * lastslash, *sp;
                     83: 
                     84:         VOID strcpy(lockfname,(char *) SNOOPFILE);
                     85:         lastslash = sp = lockfname;
                     86:         while (*sp) if (*sp++ =='/') lastslash=sp; /* points beyond / */
                     87:         VOID strcpy(lastslash,",lockfile");
                     88:         tries=0;
                     89:         while (((lockfile=creat(lockfname, 000)) == -1) && (tries<=MAXTRIES)) {
                     90:                 tries++;
                     91:                 sleep(5);
                     92:         }
                     93:         if (tries<=MAXTRIES) {
                     94:                 VOID close(lockfile);
                     95:                 if ((logfile=fopen(SNOOPFILE,"a")) ==NULL) {
                     96:                         VOID fprintf(stderr,"Can't open logfile %s\n",SNOOPFILE);
                     97:                 } else {
                     98:                         VOID fputs(argv[1],logfile);
                     99:                         VOID putc('\n',logfile);
                    100:                         VOID fclose(logfile);
                    101:                 }
                    102:                 VOID unlink(lockfname);
                    103:         } else {
                    104:                 VOID fprintf(stderr,"RCS logfile %s seems permanently locked.\n",SNOOPFILE);
                    105:                 VOID fprintf(stderr,"Please alert system administrator\n");
                    106:         }
                    107: }

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