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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD: src/sys/boot/common/ls.c,v 1.11 2003/08/25 23:30:41 obrien Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <vfs/ufs/dinode.h> 40 #include <vfs/ufs/dir.h> 41 42 #include <stand.h> 43 #include <string.h> 44 45 #include "bootstrap.h" 46 47 static char typestr[] = "?fc?d?b? ?l?s?w"; 48 49 static int ls_getdir(char **pathp); 50 51 COMMAND_SET(ls, "ls", "list files", command_ls); 52 53 static int 54 command_ls(int argc, char *argv[]) 55 { 56 int fd; 57 struct stat sb; 58 struct dirent *d; 59 char *buf, *path; 60 char lbuf[128]; /* one line */ 61 int result, ch; 62 int verbose; 63 64 result = CMD_OK; 65 fd = -1; 66 verbose = 0; 67 optind = 1; 68 optreset = 1; 69 while ((ch = getopt(argc, argv, "l")) != -1) { 70 switch(ch) { 71 case 'l': 72 verbose = 1; 73 break; 74 case '?': 75 default: 76 /* getopt has already reported an error */ 77 return(CMD_OK); 78 } 79 } 80 argv += (optind - 1); 81 argc -= (optind - 1); 82 83 if (argc < 2) { 84 path = ""; 85 } else { 86 path = argv[1]; 87 } 88 89 fd = ls_getdir(&path); 90 if (fd == -1) { 91 result = CMD_ERROR; 92 goto out; 93 } 94 pager_open(); 95 pager_output(path); 96 pager_output("\n"); 97 98 while ((d = readdirfd(fd)) != NULL) { 99 if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) { 100 if (verbose) { 101 /* stat the file, if possible */ 102 sb.st_size = 0; 103 buf = malloc(strlen(path) + strlen(d->d_name) + 2); 104 if (strlen(path) == 0) 105 sprintf(buf, "%s", d->d_name); 106 else 107 sprintf(buf, "%s/%s", path, d->d_name); 108 /* ignore return, could be symlink, etc. */ 109 if (rel_stat(buf, &sb)) 110 sb.st_size = 0; 111 free(buf); 112 sprintf(lbuf, " %c %8d %s\n", typestr[d->d_type], 113 (int)sb.st_size, d->d_name); 114 } else { 115 sprintf(lbuf, " %c %s\n", typestr[d->d_type], d->d_name); 116 } 117 if (pager_output(lbuf)) 118 goto out; 119 } 120 } 121 out: 122 pager_close(); 123 if (fd != -1) 124 close(fd); 125 if (path != NULL) 126 free(path); 127 return(result); 128 } 129 130 /* 131 * Given (path) containing a vaguely reasonable path specification, return an fd 132 * on the directory, and an allocated copy of the path to the directory. 133 */ 134 static int 135 ls_getdir(char **pathp) 136 { 137 struct stat sb; 138 int fd; 139 const char *cp; 140 char *path; 141 142 fd = -1; 143 144 /* one extra byte for a possible trailing slash required */ 145 path = malloc(strlen(*pathp) + 2); 146 strcpy(path, *pathp); 147 148 /* Make sure the path is respectable to begin with */ 149 if (archsw.arch_getdev(NULL, path, &cp)) { 150 snprintf(command_errbuf, sizeof(command_errbuf), 151 "bad path '%s'", path); 152 goto out; 153 } 154 155 fd = rel_open(cp, NULL, O_RDONLY); 156 if (fd < 0) { 157 snprintf(command_errbuf, sizeof(command_errbuf), 158 "open '%s' failed: %s", path, strerror(errno)); 159 goto out; 160 } 161 if (fstat(fd, &sb) < 0) { 162 snprintf(command_errbuf, sizeof(command_errbuf), 163 "stat failed: %s", strerror(errno)); 164 goto out; 165 } 166 if (!S_ISDIR(sb.st_mode)) { 167 snprintf(command_errbuf, sizeof(command_errbuf), 168 "%s: %s", path, strerror(ENOTDIR)); 169 goto out; 170 } 171 172 *pathp = path; 173 return(fd); 174 175 out: 176 free(path); 177 *pathp = NULL; 178 if (fd != -1) 179 close(fd); 180 return(-1); 181 } 182