1 /* $OpenBSD: ls.c,v 1.18 2019/02/05 02:17:32 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/stat.h> 33 34 #include <err.h> 35 #include <errno.h> 36 #include <stdio.h> 37 #include <string.h> 38 #include <time.h> 39 #include <unistd.h> 40 #include <limits.h> 41 #include <utmp.h> 42 #include <pwd.h> 43 #include <grp.h> 44 #include <fts.h> 45 #include "find.h" 46 #include "extern.h" 47 48 /* Derived from the print routines in the ls(1) source code. */ 49 50 static void printlink(char *); 51 static void printtime(time_t); 52 53 #define NAME_WIDTH 8 54 #define DATELEN 64 55 56 void 57 printlong(char *name, char *accpath, struct stat *sb) 58 { 59 char modep[15]; 60 61 (void)printf("%6llu %4lld ", (unsigned long long)sb->st_ino, 62 (long long)sb->st_blocks); 63 (void)strmode(sb->st_mode, modep); 64 (void)printf("%s %3u %-*.*s %-*.*s ", modep, sb->st_nlink, 65 NAME_WIDTH, UT_NAMESIZE, user_from_uid(sb->st_uid, 0), 66 NAME_WIDTH, UT_NAMESIZE, group_from_gid(sb->st_gid, 0)); 67 68 if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode)) 69 (void)printf("%3u, %3u ", major(sb->st_rdev), 70 minor(sb->st_rdev)); 71 else 72 (void)printf("%8lld ", (long long)sb->st_size); 73 printtime(sb->st_mtime); 74 (void)printf("%s", name); 75 if (S_ISLNK(sb->st_mode)) 76 printlink(accpath); 77 (void)putchar('\n'); 78 } 79 80 static void 81 printtime(time_t ftime) 82 { 83 char f_date[DATELEN]; 84 static time_t now; 85 static int now_set = 0; 86 87 if (! now_set) { 88 now = time(NULL); 89 now_set = 1; 90 } 91 92 /* 93 * convert time to string, and print 94 */ 95 if (strftime(f_date, sizeof(f_date), 96 (ftime + SIXMONTHS <= now || ftime > now) ? "%b %e %Y" : 97 "%b %e %H:%M", localtime(&ftime)) == 0) 98 f_date[0] = '\0'; 99 100 printf("%s ", f_date); 101 } 102 103 static void 104 printlink(char *name) 105 { 106 int lnklen; 107 char path[PATH_MAX]; 108 109 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 110 warn("%s", name); 111 return; 112 } 113 path[lnklen] = '\0'; 114 (void)printf(" -> %s", path); 115 } 116