1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1990 The Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)dev_mkdb.c 5.12 (Berkeley) 11/02/92"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/stat.h> 20 21 #include <fcntl.h> 22 #undef DIRBLKSIZ 23 #include <dirent.h> 24 #include <nlist.h> 25 #include <kvm.h> 26 #include <db.h> 27 #include <errno.h> 28 #include <unistd.h> 29 #include <stdio.h> 30 #include <paths.h> 31 #include <stdlib.h> 32 #include <string.h> 33 34 void err __P((const char *, ...)); 35 void usage __P((void)); 36 37 int 38 main(argc, argv) 39 int argc; 40 char *argv[]; 41 { 42 register DIR *dirp; 43 register struct dirent *dp; 44 struct stat sb; 45 struct { 46 mode_t type; 47 dev_t dev; 48 } bkey; 49 DB *db; 50 DBT data, key; 51 int ch; 52 u_char buf[MAXNAMLEN + 1]; 53 char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1]; 54 55 while ((ch = getopt(argc, argv, "")) != EOF) 56 switch((char)ch) { 57 case '?': 58 default: 59 usage(); 60 } 61 argc -= optind; 62 argv += optind; 63 64 if (argc > 0) 65 usage(); 66 67 if (chdir(_PATH_DEV)) 68 err("%s: %s", _PATH_DEV, strerror(errno)); 69 70 dirp = opendir("."); 71 72 (void)snprintf(dbtmp, sizeof(dbtmp), "%sdev.tmp", _PATH_VARRUN); 73 (void)snprintf(dbname, sizeof(dbtmp), "%sdev.db", _PATH_VARRUN); 74 db = dbopen(dbtmp, O_CREAT|O_EXLOCK|O_RDWR|O_TRUNC, 75 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, DB_HASH, NULL); 76 if (db == NULL) 77 err("%s: %s", dbtmp, strerror(errno)); 78 79 /* 80 * Keys are a mode_t followed by a dev_t. The former is the type of 81 * the file (mode & S_IFMT), the latter is the st_rdev field. 82 */ 83 key.data = &bkey; 84 key.size = sizeof(bkey); 85 data.data = buf; 86 while (dp = readdir(dirp)) { 87 if (stat(dp->d_name, &sb)) { 88 (void)fprintf(stderr, 89 "dev_mkdb: %s: %s\n", dp->d_name, strerror(errno)); 90 continue; 91 } 92 93 /* Create the key. */ 94 if (S_ISCHR(sb.st_mode)) 95 bkey.type = S_IFCHR; 96 else if (S_ISBLK(sb.st_mode)) 97 bkey.type = S_IFBLK; 98 else 99 continue; 100 bkey.dev = sb.st_rdev; 101 102 /* 103 * Create the data; nul terminate the name so caller doesn't 104 * have to. 105 */ 106 bcopy(dp->d_name, buf, dp->d_namlen); 107 buf[dp->d_namlen] = '\0'; 108 data.size = dp->d_namlen + 1; 109 if ((db->put)(db, &key, &data, 0)) 110 err("dbput %s: %s\n", dbtmp, strerror(errno)); 111 } 112 (void)(db->close)(db); 113 if (rename(dbtmp, dbname)) 114 err("rename %s to %s: %s", dbtmp, dbname, strerror(errno)); 115 exit(0); 116 } 117 118 void 119 usage() 120 { 121 (void)fprintf(stderr, "usage: dev_mkdb\n"); 122 exit(1); 123 } 124 125 #if __STDC__ 126 #include <stdarg.h> 127 #else 128 #include <varargs.h> 129 #endif 130 131 void 132 #if __STDC__ 133 err(const char *fmt, ...) 134 #else 135 err(fmt, va_alist) 136 char *fmt; 137 va_dcl 138 #endif 139 { 140 va_list ap; 141 #if __STDC__ 142 va_start(ap, fmt); 143 #else 144 va_start(ap); 145 #endif 146 (void)fprintf(stderr, "dev_mkdb: "); 147 (void)vfprintf(stderr, fmt, ap); 148 va_end(ap); 149 (void)fprintf(stderr, "\n"); 150 exit(1); 151 /* NOTREACHED */ 152 } 153