1 /* 2 * $NetBSD: ls.c,v 1.3 1997/06/13 13:48:47 drochner Exp $ 3 */ 4 5 /*- 6 * Copyright (c) 1993 7 * The Regents of the University of California. All rights reserved. 8 * Copyright (c) 1996 9 * Matthias Drochner. All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <sys/param.h> 44 #include <ufs/ufs/dinode.h> 45 #include <ufs/ufs/dir.h> 46 47 #include <stand.h> 48 #include <string.h> 49 50 #include "bootstrap.h" 51 52 static char typestr[] = "?fc?d?b? ?l?s?w"; 53 54 static int ls_getdir(char **pathp); 55 56 COMMAND_SET(ls, "ls", "list files", command_ls); 57 58 static int 59 command_ls(int argc, char *argv[]) 60 { 61 int fd; 62 struct stat sb; 63 struct dirent *d; 64 char *buf, *path; 65 char lbuf[128]; /* one line */ 66 int result, ch; 67 int verbose; 68 69 result = CMD_OK; 70 fd = -1; 71 verbose = 0; 72 optind = 1; 73 optreset = 1; 74 while ((ch = getopt(argc, argv, "l")) != -1) { 75 switch (ch) { 76 case 'l': 77 verbose = 1; 78 break; 79 case '?': 80 default: 81 /* getopt has already reported an error */ 82 return (CMD_OK); 83 } 84 } 85 argv += (optind - 1); 86 argc -= (optind - 1); 87 88 if (argc < 2) { 89 path = ""; 90 } else { 91 path = argv[1]; 92 } 93 94 if (stat(path, &sb) == 0 && !S_ISDIR(sb.st_mode)) { 95 if (verbose) { 96 printf(" %c %8d %s\n", 97 typestr[sb.st_mode >> 12], 98 (int)sb.st_size, path); 99 } else { 100 printf(" %c %s\n", 101 typestr[sb.st_mode >> 12], path); 102 } 103 return (CMD_OK); 104 } 105 106 fd = ls_getdir(&path); 107 if (fd == -1) { 108 result = CMD_ERROR; 109 goto out; 110 } 111 pager_open(); 112 pager_output(path); 113 pager_output("\n"); 114 115 while ((d = readdirfd(fd)) != NULL) { 116 if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) { 117 if (d->d_type == 0 || verbose) { 118 /* stat the file, if possible */ 119 sb.st_size = 0; 120 sb.st_mode = 0; 121 buf = malloc(strlen(path) + strlen(d->d_name) + 2); 122 if (buf != NULL) { 123 sprintf(buf, "%s/%s", path, d->d_name); 124 /* ignore return, could be symlink, etc. */ 125 if (stat(buf, &sb)) { 126 sb.st_size = 0; 127 sb.st_mode = 0; 128 } 129 free(buf); 130 } 131 } 132 if (verbose) { 133 snprintf(lbuf, sizeof(lbuf), " %c %8d %s\n", 134 typestr[d->d_type? d->d_type:sb.st_mode >> 12], 135 (int)sb.st_size, d->d_name); 136 } else { 137 snprintf(lbuf, sizeof(lbuf), " %c %s\n", 138 typestr[d->d_type? d->d_type:sb.st_mode >> 12], d->d_name); 139 } 140 if (pager_output(lbuf)) 141 goto out; 142 } 143 } 144 out: 145 pager_close(); 146 if (fd != -1) 147 close(fd); 148 free(path); /* ls_getdir() did allocate path */ 149 return (result); 150 } 151 152 /* 153 * Given (path) containing a vaguely reasonable path specification, return an fd 154 * on the directory, and an allocated copy of the path to the directory. 155 */ 156 static int 157 ls_getdir(char **pathp) 158 { 159 struct stat sb; 160 int fd; 161 const char *cp; 162 char *path; 163 164 fd = -1; 165 166 /* one extra byte for a possible trailing slash required */ 167 path = malloc(strlen(*pathp) + 2); 168 if (path == NULL) { 169 snprintf(command_errbuf, sizeof (command_errbuf), 170 "out of memory"); 171 goto out; 172 } 173 strcpy(path, *pathp); 174 175 /* Make sure the path is respectable to begin with */ 176 if (archsw.arch_getdev(NULL, path, &cp)) { 177 snprintf(command_errbuf, sizeof(command_errbuf), 178 "bad path '%s'", path); 179 goto out; 180 } 181 182 /* If there's no path on the device, assume '/' */ 183 if (*cp == 0) 184 strcat(path, "/"); 185 186 fd = open(path, O_RDONLY); 187 if (fd < 0) { 188 snprintf(command_errbuf, sizeof(command_errbuf), 189 "open '%s' failed: %s", path, strerror(errno)); 190 goto out; 191 } 192 if (fstat(fd, &sb) < 0) { 193 snprintf(command_errbuf, sizeof(command_errbuf), 194 "stat failed: %s", strerror(errno)); 195 goto out; 196 } 197 if (!S_ISDIR(sb.st_mode)) { 198 snprintf(command_errbuf, sizeof(command_errbuf), 199 "%s: %s", path, strerror(ENOTDIR)); 200 goto out; 201 } 202 203 *pathp = path; 204 return (fd); 205 206 out: 207 free(path); 208 *pathp = NULL; 209 if (fd != -1) 210 close(fd); 211 return (-1); 212 } 213