1 /* 2 * ls.c --- list directories 3 * 4 * Copyright (C) 1997 Theodore Ts'o. This file may be redistributed 5 * under the terms of the GNU Public License. 6 */ 7 8 #include "config.h" 9 #include <stdio.h> 10 #include <unistd.h> 11 #include <stdlib.h> 12 #include <ctype.h> 13 #include <string.h> 14 #include <time.h> 15 #ifdef HAVE_ERRNO_H 16 #include <errno.h> 17 #endif 18 #include <sys/types.h> 19 #ifdef HAVE_GETOPT_H 20 #include <getopt.h> 21 #else 22 extern int optind; 23 extern char *optarg; 24 #endif 25 26 #include "debugfs.h" 27 28 /* 29 * list directory 30 */ 31 32 #define LONG_OPT 0x0001 33 #define PARSE_OPT 0x0002 34 #define RAW_OPT 0x0004 35 #define ENCRYPT_OPT 0x8000 36 37 struct list_dir_struct { 38 FILE *f; 39 int col; 40 int options; 41 int state; 42 }; 43 44 static const char *monstr[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", 45 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; 46 47 static int print_filename(FILE *f, struct ext2_dir_entry *dirent, int options) 48 { 49 unsigned char ch; 50 const char *cp = dirent->name; 51 int len = ext2fs_dirent_name_len(dirent); 52 int retlen = 0; 53 54 if ((options & ENCRYPT_OPT) && !(options & RAW_OPT)) { 55 if (f) 56 return fprintf(f, "<encrypted (%d)>", len); 57 else { 58 char tmp[1]; 59 return snprintf(tmp, sizeof(tmp), 60 "<encrypted (%d)>", len); 61 } 62 } 63 while (len--) { 64 ch = *cp++; 65 if (ch > 128) { 66 if (f) 67 fputs("M-", f); 68 ch -= 128; 69 retlen += 2; 70 } 71 if ((ch < 32) || (ch == 0x7f)) { 72 if (f) 73 fputc('^', f); 74 ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */ 75 retlen++; 76 } 77 if (f) 78 fputc(ch, f); 79 retlen++; 80 } 81 return retlen; 82 } 83 84 static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)), 85 int entry, 86 struct ext2_dir_entry *dirent, 87 int offset EXT2FS_ATTR((unused)), 88 int blocksize EXT2FS_ATTR((unused)), 89 char *buf EXT2FS_ATTR((unused)), 90 void *private) 91 { 92 struct ext2_inode inode; 93 ext2_ino_t ino; 94 struct tm *tm_p; 95 time_t modtime; 96 char tmp[EXT2_NAME_LEN + 16]; 97 char datestr[80]; 98 char lbr, rbr; 99 int thislen; 100 int options; 101 struct list_dir_struct *ls = (struct list_dir_struct *) private; 102 struct ext2_dir_entry_tail *t = (struct ext2_dir_entry_tail *) dirent; 103 104 thislen = ext2fs_dirent_name_len(dirent); 105 ino = dirent->inode; 106 options = ls->options; 107 if (ls->state < 2) { 108 ls->state++; 109 options |= RAW_OPT; 110 } 111 112 if (entry == DIRENT_DELETED_FILE) { 113 lbr = '<'; 114 rbr = '>'; 115 ino = 0; 116 } else { 117 lbr = rbr = ' '; 118 } 119 if (options & PARSE_OPT) { 120 if (ino) { 121 if (debugfs_read_inode(ino, &inode, "ls")) 122 return 0; 123 } else 124 memset(&inode, 0, sizeof(struct ext2_inode)); 125 fprintf(ls->f,"/%u/%06o/%d/%d/%*s/", ino, inode.i_mode, 126 inode.i_uid, inode.i_gid, thislen, dirent->name); 127 if (LINUX_S_ISDIR(inode.i_mode)) 128 fprintf(ls->f, "/"); 129 else 130 fprintf(ls->f, "%lld/", EXT2_I_SIZE(&inode)); 131 fprintf(ls->f, "\n"); 132 } else if (options & LONG_OPT) { 133 if (ino) { 134 if (debugfs_read_inode(ino, &inode, "ls")) 135 return 0; 136 modtime = inode.i_mtime; 137 tm_p = localtime(&modtime); 138 sprintf(datestr, "%2d-%s-%4d %02d:%02d", 139 tm_p->tm_mday, monstr[tm_p->tm_mon], 140 1900 + tm_p->tm_year, tm_p->tm_hour, 141 tm_p->tm_min); 142 } else { 143 strcpy(datestr, " "); 144 memset(&inode, 0, sizeof(struct ext2_inode)); 145 } 146 fprintf(ls->f, "%c%6u%c %6o ", lbr, ino, rbr, inode.i_mode); 147 if (entry == DIRENT_CHECKSUM) { 148 fprintf(ls->f, "(dirblock checksum: 0x%08x)\n", 149 t->det_checksum); 150 return 0; 151 } 152 fprintf(ls->f, "(%d) %5d %5d ", 153 ext2fs_dirent_file_type(dirent), 154 inode_uid(inode), inode_gid(inode)); 155 if (LINUX_S_ISDIR(inode.i_mode)) 156 fprintf(ls->f, "%5d", inode.i_size); 157 else 158 fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode)); 159 fputs(datestr, ls->f); 160 fputc(' ', ls->f); 161 print_filename(ls->f, dirent, options); 162 fputc('\n', ls->f); 163 } else { 164 if (entry == DIRENT_CHECKSUM) { 165 sprintf(tmp, "%c%u%c (dirblock checksum: 0x%08x) ", 166 lbr, dirent->inode, rbr, t->det_checksum); 167 thislen = strlen(tmp); 168 if (ls->col + thislen > 80) { 169 fputc('\n', ls->f); 170 ls->col = 0; 171 } 172 fprintf(ls->f, "%s", tmp); 173 ls->col += thislen; 174 return 0; 175 } 176 sprintf(tmp, "%c%u%c (%d) ", lbr, dirent->inode, rbr, 177 dirent->rec_len); 178 thislen = strlen(tmp) + 3; 179 thislen += print_filename(NULL, dirent, options); 180 181 if (ls->col + thislen > 80) { 182 fputc('\n', ls->f); 183 ls->col = 0; 184 } 185 fprintf(ls->f, "%s", tmp); 186 print_filename(ls->f, dirent, options); 187 fputs(" ", ls->f); 188 ls->col += thislen; 189 } 190 return 0; 191 } 192 193 void do_list_dir(int argc, char *argv[]) 194 { 195 struct ext2_inode inode; 196 ext2_ino_t ino; 197 int retval; 198 int c; 199 int flags = DIRENT_FLAG_INCLUDE_EMPTY; 200 struct list_dir_struct ls; 201 202 ls.options = 0; 203 ls.state = 0; 204 if (check_fs_open(argv[0])) 205 return; 206 207 reset_getopt(); 208 while ((c = getopt (argc, argv, "cdlpr")) != EOF) { 209 switch (c) { 210 case 'c': 211 flags |= DIRENT_FLAG_INCLUDE_CSUM; 212 break; 213 case 'l': 214 ls.options |= LONG_OPT; 215 break; 216 case 'd': 217 flags |= DIRENT_FLAG_INCLUDE_REMOVED; 218 break; 219 case 'p': 220 ls.options |= PARSE_OPT; 221 break; 222 case 'r': 223 ls.options |= RAW_OPT; 224 break; 225 default: 226 goto print_usage; 227 } 228 } 229 230 if (argc > optind+1) { 231 print_usage: 232 com_err(0, 0, "Usage: ls [-l] [-d] [-p] file"); 233 return; 234 } 235 236 if (argc == optind) 237 ino = cwd; 238 else 239 ino = string_to_inode(argv[optind]); 240 if (!ino) 241 return; 242 243 ls.f = open_pager(); 244 ls.col = 0; 245 246 if (debugfs_read_inode(ino, &inode, argv[0])) 247 return; 248 249 if (inode.i_flags & EXT4_ENCRYPT_FL) 250 ls.options |= ENCRYPT_OPT; 251 252 retval = ext2fs_dir_iterate2(current_fs, ino, flags, 253 0, list_dir_proc, &ls); 254 fprintf(ls.f, "\n"); 255 close_pager(ls.f); 256 if (retval) 257 com_err(argv[1], retval, 0); 258 259 return; 260 } 261 262 263
