usr/src/cmd/streams/log/strclean.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #ident  "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.2.1.2       */
  27
  28 #include <stdio.h>
  29 #include <fcntl.h>
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33 #include <stropts.h>
  34 #include <ftw.h>
  35 #include "sys/types.h"
  36 #include "sys/stat.h"
  37 #include "sys/stropts.h"
  38 #include "sys/strlog.h"
  39
  40 #define MSGSIZE 128
  41 #define NSECDAY (60*60*24)
  42 #define LOGDELAY 2
  43 #define LOGDEFAULT "/var/log/streams"
  44 #define AGEDEFAULT 3
  45 #define DIRECTORY 040000
  46 #define ACCESS 07
  47
  48 static char prefix[128];
  49 static time_t cutoff;
  50
  51
  52 static int clean(const char *name, const struct stat *stp, int info);
  53
  54 int
  55 main(int ac, char *av[])
  56 {
  57         int age;
  58         int c, errflg;
  59         int fd;
  60         struct stat stbuf;
  61         struct strbuf ctl, dat;
  62         struct log_ctl lctl;
  63         char msg[MSGSIZE];
  64         char *logname;
  65
  66         logname = LOGDEFAULT;
  67         age = AGEDEFAULT;
  68         errflg = 0;
  69
  70         while ((c = getopt(ac, av, "d:a:")) != EOF) {
  71                 switch (c) {
  72                 case 'd':
  73                         if (*optarg == '\0')
  74                                 errflg++;
  75                         else
  76                                 logname = optarg;
  77                         break;
  78
  79                 case 'a':
  80                         if (*optarg == '\0')
  81                                 errflg++;
  82                         else
  83                                 age = atoi(optarg);
  84                         break;
  85
  86                 default:
  87                         errflg++;
  88                         break;
  89                 }
  90         }
  91
  92         if (errflg) {
  93                 fprintf(stderr, "Usage: strclean [-d <logdir>] [-a <age>]\n");
  94                 return (1);
  95         }
  96
  97         if (age < 1) {
  98                 fprintf(stderr, "strclean: <age> must be at least 1\n");
  99                 return (2);
 100         }
 101
 102         if ((stat(logname, &stbuf) < 0) || !(stbuf.st_mode & DIRECTORY)) {
 103                 fprintf(stderr, "strclean: %s not a directory\n", logname);
 104                 return (3);
 105         }
 106
 107         if (access(logname, ACCESS) < 0) {
 108                 fprintf(stderr, "strclean: cannot access directory %s\n",
 109                     logname);
 110                 return (4);
 111         }
 112
 113         cutoff = time(NULL) - age * NSECDAY;
 114
 115         ctl.len = sizeof (struct log_ctl);
 116         ctl.maxlen = sizeof (struct log_ctl);
 117         ctl.buf = (caddr_t)&lctl;
 118         lctl.level = 0;
 119         lctl.flags = SL_ERROR|SL_NOTIFY;
 120         dat.buf = msg;
 121         dat.maxlen = MSGSIZE;
 122         sprintf(dat.buf,
 123             "strclean - removing log files more than %d days old", age);
 124         dat.len = strlen(dat.buf) + 1;
 125
 126         if ((fd = open("/dev/log", O_RDWR)) >= 0) {
 127                 putmsg(fd, &ctl, &dat, 0);
 128                 close(fd);
 129                 sleep(LOGDELAY);
 130         }
 131
 132         strcpy(prefix, logname);
 133         strcat(prefix, "/error.");
 134
 135         ftw(logname, clean, 1);
 136
 137         return (0);
 138 }
 139
 140 /*
 141  * clean out all files in the log directory prefixed by 'prefix'
 142  * and that are older than 'cutoff' (these are globals above).
 143  */
 144 static int
 145 clean(const char *name, const struct stat *stp, int info)
 146 {
 147         if (info != FTW_F)
 148                 return (0);
 149
 150         if (strncmp(name, prefix, strlen(prefix)) != 0)
 151                 return (0);
 152
 153         if (stp->st_mtime >= cutoff)
 154                 return (0);
 155
 156         if (unlink(name) < 0)
 157                 fprintf(stderr, "strclean: unable to unlink file %s\n", name);
 158
 159         return (0);
 160 }