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Annotation of 43BSDReno/contrib/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 4.4 89/05/01 15:14:00 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: 
                     17: /* Copyright (C) 1982, 1988, 1989 Walter Tichy
                     18:  * All rights reserved.
                     19:  *
                     20:  * Redistribution and use in source and binary forms are permitted
                     21:  * provided that the above copyright notice and this paragraph are
                     22:  * duplicated in all such forms and that any documentation,
                     23:  * advertising materials, and other materials related to such
                     24:  * distribution and use acknowledge that the software was developed
                     25:  * by Walter Tichy.
                     26:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     27:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     28:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     29:  *
                     30:  * Report all problems and direct all questions to:
                     31:  *   [email protected]
                     32:  * 
                     33: 
                     34: 
                     35: 
                     36: 
                     37: 
                     38: 
                     39: 
                     40: */
                     41: 
                     42: 
                     43: /* $Log:       snoop.c,v $
                     44:  * Revision 4.4  89/05/01  15:14:00  narten
                     45:  * changed copyright header to reflect current distribution rules
                     46:  * 
                     47:  * Revision 4.3  87/12/18  11:46:52  narten
                     48:  * more lint cleanups (Guy Harris)
                     49:  * 
                     50:  * Revision 4.2  87/10/18  10:41:47  narten
                     51:  * Changing version numbers. Changes relative to 1.1 actually relative to 
                     52:  * 4.1
                     53:  * 
                     54:  * Revision 1.2  87/09/24  14:01:41  narten
                     55:  * Sources now pass through lint (if you ignore printf/sprintf/fprintf 
                     56:  * warnings)
                     57:  * 
                     58:  * Revision 1.1  84/01/23  14:50:49  kcs
                     59:  * Initial revision
                     60:  * 
                     61:  * Revision 4.1  83/03/28  13:23:42  wft
                     62:  * No change; just new revision number.
                     63:  * 
                     64:  * Revision 3.2  82/12/04  17:14:31  wft
                     65:  * Added rcsbase.h, changed SNOOPDIR to SNOOPFILE, reintroduced
                     66:  * error message in case of permanent locking.
                     67:  * 
                     68:  * Revision 3.1  82/10/18  21:22:03  wft
                     69:  * Number of polls now 20, no error message if critical section can't
                     70:  * be entered.
                     71:  * 
                     72:  * Revision 2.3  82/07/01  23:49:28  wft
                     73:  * changed copyright notice only.
                     74:  * 
                     75:  * Revision 2.2  82/06/03  20:00:10  wft
                     76:  * changed name from rcslog to snoop, replaced LOGDIR with SNOOPDIR.
                     77:  * 
                     78:  * Revision 2.1  82/05/06  17:55:54  wft
                     79:  * Initial revision
                     80:  *
                     81:  */
                     82: 
                     83: 
                     84: #include "rcsbase.h"
                     85: #define fflsbuf _flsbuf
                     86: /* undo redefinition of putc in rcsbase.h */
                     87: 
                     88: char  lockfname[NCPPN];
                     89: FILE * logfile;
                     90: int lockfile;
                     91: 
                     92: #define MAXTRIES 20
                     93: 
                     94: main(argc,argv)
                     95: int argc; char * argv[];
                     96: /* writes argv[1] to SNOOPFILE and appends a newline. Invoked as follows:
                     97:  * rcslog logmessage
                     98:  */
                     99: {       int tries;
                    100:         register char * lastslash, *sp;
                    101: 
                    102:         VOID strcpy(lockfname,(char *) SNOOPFILE);
                    103:         lastslash = sp = lockfname;
                    104:         while (*sp) if (*sp++ =='/') lastslash=sp; /* points beyond / */
                    105:         VOID strcpy(lastslash,",lockfile");
                    106:         tries=0;
                    107:         while (((lockfile=creat(lockfname, 000)) == -1) && (tries<=MAXTRIES)) {
                    108:                 tries++;
                    109:                 sleep(5);
                    110:         }
                    111:         if (tries<=MAXTRIES) {
                    112:                 VOID close(lockfile);
                    113:                 if ((logfile=fopen(SNOOPFILE,"a")) ==NULL) {
                    114:                         VOID fprintf(stderr,"Can't open logfile %s\n",SNOOPFILE);
                    115:                 } else {
                    116:                         VOID fputs(argv[1],logfile);
                    117:                         VOID putc('\n',logfile);
                    118:                         VOID fclose(logfile);
                    119:                 }
                    120:                 VOID unlink(lockfname);
                    121:         } else {
                    122:                 VOID fprintf(stderr,"RCS logfile %s seems permanently locked.\n",SNOOPFILE);
                    123:                 VOID fprintf(stderr,"Please alert system administrator\n");
                    124:         }
                    125: }

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