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 42 #include <sys/param.h> 43 #include <ufs/ufs/dinode.h> 44 #include <ufs/ufs/dir.h> 45 46 #include <stand.h> 47 #include <string.h> 48 49 #include "bootstrap.h" 50 51 static char typestr[] = "?fc?d?b? ?l?s?w"; 52 53 static int ls_getdir(char **pathp); 54 55 COMMAND_SET(ls, "ls", "list files", command_ls); 56 57 static int 58 command_ls(int argc, char *argv[]) 59 { 60 int fd; 61 struct stat sb; 62 struct dirent *d; 63 char *buf, *path; 64 char lbuf[128]; /* one line */ 65 int result, ch; 66 int verbose; 67 68 result = CMD_OK; 69 fd = -1; 70 verbose = 0; 71 optind = 1; 72 optreset = 1; 73 while ((ch = getopt(argc, argv, "l")) != -1) { 74 switch (ch) { 75 case 'l': 76 verbose = 1; 77 break; 78 case '?': 79 default: 80 /* getopt has already reported an error */ 81 return (CMD_OK); 82 } 83 } 84 argv += (optind - 1); 85 argc -= (optind - 1); 86 87 if (argc < 2) { 88 path = ""; 89 } else { 90 path = argv[1]; 91 } 92 93 if (stat(path, &sb) == 0 && !S_ISDIR(sb.st_mode)) { 94 if (verbose) { 95 printf(" %c %8d %s\n", 96 typestr[sb.st_mode >> 12], 97 (int)sb.st_size, path); 98 } else { 99 printf(" %c %s\n", 100 typestr[sb.st_mode >> 12], path); 101 } 102 return (CMD_OK); 103 } 104 105 fd = ls_getdir(&path); 106 if (fd == -1) { 107 result = CMD_ERROR; 108 goto out; 109 } 110 pager_open(); 111 pager_output(path); 112 pager_output("\n"); 113 114 while ((d = readdirfd(fd)) != NULL) { 115 if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) { 116 if (d->d_type == 0 || verbose) { 117 /* stat the file, if possible */ 118 sb.st_size = 0; 119 sb.st_mode = 0; 120 /* Avoid double '/' */ 121 if (strcmp(path, "/") == 0) { 122 (void) asprintf(&buf, "/%s", d->d_name); 123 } else { 124 (void) asprintf(&buf, "%s/%s", path, 125 d->d_name); 126 } 127 128 if (buf != NULL) { 129 /* 130 * ignore return, could be symlink, etc. 131 */ 132 if (stat(buf, &sb) != 0) { 133 sb.st_size = 0; 134 sb.st_mode = 0; 135 } 136 free(buf); 137 } 138 } 139 if (verbose) { 140 snprintf(lbuf, sizeof (lbuf), " %c %8d %s\n", 141 typestr[d->d_type ? 142 d->d_type:sb.st_mode >> 12], 143 (int)sb.st_size, d->d_name); 144 } else { 145 snprintf(lbuf, sizeof (lbuf), " %c %s\n", 146 typestr[d->d_type ? 147 d->d_type:sb.st_mode >> 12], d->d_name); 148 } 149 if (pager_output(lbuf)) 150 goto out; 151 } 152 } 153 out: 154 pager_close(); 155 if (fd != -1) 156 close(fd); 157 free(path); /* ls_getdir() did allocate path */ 158 return (result); 159 } 160 161 /* 162 * Given (path) containing a vaguely reasonable path specification, return an fd 163 * on the directory, and an allocated copy of the path to the directory. 164 */ 165 static int 166 ls_getdir(char **pathp) 167 { 168 struct stat sb; 169 int fd; 170 const char *cp; 171 char *path; 172 173 fd = -1; 174 175 /* one extra byte for a possible trailing slash required */ 176 path = malloc(strlen(*pathp) + 2); 177 if (path == NULL) { 178 snprintf(command_errbuf, sizeof (command_errbuf), 179 "out of memory"); 180 goto out; 181 } 182 183 strcpy(path, *pathp); 184 185 /* Make sure the path is respectable to begin with */ 186 if (archsw.arch_getdev(NULL, path, &cp)) { 187 snprintf(command_errbuf, sizeof (command_errbuf), 188 "bad path '%s'", path); 189 goto out; 190 } 191 192 /* If there's no path on the device, assume '/' */ 193 if (*cp == 0) 194 strcat(path, "/"); 195 196 fd = open(path, O_RDONLY); 197 if (fd < 0) { 198 snprintf(command_errbuf, sizeof (command_errbuf), 199 "open '%s' failed: %s", path, strerror(errno)); 200 goto out; 201 } 202 if (fstat(fd, &sb) < 0) { 203 snprintf(command_errbuf, sizeof (command_errbuf), 204 "stat failed: %s", strerror(errno)); 205 goto out; 206 } 207 if (!S_ISDIR(sb.st_mode)) { 208 snprintf(command_errbuf, sizeof (command_errbuf), 209 "%s: %s", path, strerror(ENOTDIR)); 210 goto out; 211 } 212 213 *pathp = path; 214 return (fd); 215 216 out: 217 free(path); 218 *pathp = NULL; 219 if (fd != -1) 220 close(fd); 221 return (-1); 222 } 223