1 /* 2 * $NetBSD: ls.c,v 1.3 2009/07/20 04:59:03 kiyohara 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: src/sys/boot/common/ls.c,v 1.11 2003/08/25 23:30:41 obrien Exp $"); */ 42 43 44 #include <sys/param.h> 45 #include <ufs/ufs/dinode.h> 46 #include <ufs/ufs/dir.h> 47 #include <sys/dirent.h> 48 49 #include <lib/libsa/stand.h> 50 #include <lib/libsa/loadfile.h> 51 52 #include "bootstrap.h" 53 54 static char typestr[] = "?fc?d?b? ?l?s?w"; 55 56 static int ls_getdir(char **pathp); 57 58 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 fd = ls_getdir(&path); 95 if (fd == -1) { 96 result = CMD_ERROR; 97 goto out; 98 } 99 100 pager_open(); 101 pager_output(path); 102 pager_output("\n"); 103 104 while ((d = readdirfd(fd)) != NULL) { 105 /* if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) { */ 106 if (verbose) { 107 /* stat the file, if possible */ 108 sb.st_size = 0; 109 buf = alloc(strlen(path) + strlen(d->d_name) + 2); 110 sprintf(buf, "%s/%s", path, d->d_name); 111 /* ignore return, could be symlink, etc. */ 112 if (stat(buf, &sb)) 113 sb.st_size = 0; 114 free(buf); 115 sprintf(lbuf, " %c %8d %s\n", typestr[d->d_type], 116 (int)sb.st_size, d->d_name); 117 } else { 118 sprintf(lbuf, " %c %s\n", typestr[d->d_type], d->d_name); 119 } 120 if (pager_output(lbuf)) 121 goto out; 122 /* } */ 123 } 124 out: 125 pager_close(); 126 if (fd != -1) 127 close(fd); 128 if (path != NULL) 129 free(path); 130 return(result); 131 } 132 133 /* 134 * Given (path) containing a vaguely reasonable path specification, return an fd 135 * on the directory, and an allocated copy of the path to the directory. 136 */ 137 static int 138 ls_getdir(char **pathp) 139 { 140 struct stat sb; 141 int fd; 142 const char *cp; 143 char *path, *tail; 144 145 tail = NULL; 146 fd = -1; 147 148 /* one extra byte for a possible trailing slash required */ 149 path = alloc(strlen(*pathp) + 2); 150 strcpy(path, *pathp); 151 152 /* Make sure the path is respectable to begin with */ 153 if (archsw.arch_getdev(NULL, path, &cp)) { 154 sprintf(command_errbuf, "bad path '%s'", path); 155 goto out; 156 } 157 158 /* If there's no path on the device, assume '/' */ 159 if (*cp == 0) 160 strcat(path, "/"); 161 fd = open(path, O_RDONLY); 162 if (fd < 0) { 163 sprintf(command_errbuf, "open '%s' failed: %s", path, strerror(errno)); 164 goto out; 165 } 166 if (fstat(fd, &sb) < 0) { 167 sprintf(command_errbuf, "stat failed: %s", strerror(errno)); 168 goto out; 169 } 170 if (!S_ISDIR(sb.st_mode)) { 171 sprintf(command_errbuf, "%s: %s", path, strerror(ENOTDIR)); 172 goto out; 173 } 174 175 *pathp = path; 176 return(fd); 177 178 out: 179 free(path); 180 *pathp = NULL; 181 if (fd != -1) 182 close(fd); 183 return(-1); 184 } 185