ls.c revision 302408
1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#ifndef lint 31#if 0 32static char sccsid[] = "@(#)ls.c 8.1 (Berkeley) 6/6/93"; 33#endif 34#endif /* not lint */ 35 36#include <sys/cdefs.h> 37__FBSDID("$FreeBSD: stable/11/usr.bin/find/ls.c 241015 2012-09-27 23:31:19Z mdf $"); 38 39#include <sys/param.h> 40#include <sys/stat.h> 41 42#include <err.h> 43#include <errno.h> 44#include <fts.h> 45#include <grp.h> 46#include <inttypes.h> 47#include <langinfo.h> 48#include <pwd.h> 49#include <stdio.h> 50#include <string.h> 51#include <time.h> 52#include <unistd.h> 53 54#include "find.h" 55 56/* Derived from the print routines in the ls(1) source code. */ 57 58static void printlink(char *); 59static void printtime(time_t); 60 61void 62printlong(char *name, char *accpath, struct stat *sb) 63{ 64 char modep[15]; 65 66 (void)printf("%6ju %8"PRId64" ", (uintmax_t)sb->st_ino, sb->st_blocks); 67 (void)strmode(sb->st_mode, modep); 68 (void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, MAXLOGNAME - 1, 69 user_from_uid(sb->st_uid, 0), MAXLOGNAME - 1, 70 group_from_gid(sb->st_gid, 0)); 71 72 if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode)) 73 (void)printf("%#8jx ", (uintmax_t)sb->st_rdev); 74 else 75 (void)printf("%8"PRId64" ", sb->st_size); 76 printtime(sb->st_mtime); 77 (void)printf("%s", name); 78 if (S_ISLNK(sb->st_mode)) 79 printlink(accpath); 80 (void)putchar('\n'); 81} 82 83static void 84printtime(time_t ftime) 85{ 86 char longstring[80]; 87 static time_t lnow; 88 const char *format; 89 static int d_first = -1; 90 91 if (d_first < 0) 92 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 93 if (lnow == 0) 94 lnow = time(NULL); 95 96#define SIXMONTHS ((365 / 2) * 86400) 97 if (ftime + SIXMONTHS > lnow && ftime < lnow + SIXMONTHS) 98 /* mmm dd hh:mm || dd mmm hh:mm */ 99 format = d_first ? "%e %b %R " : "%b %e %R "; 100 else 101 /* mmm dd yyyy || dd mmm yyyy */ 102 format = d_first ? "%e %b %Y " : "%b %e %Y "; 103 strftime(longstring, sizeof(longstring), format, localtime(&ftime)); 104 fputs(longstring, stdout); 105} 106 107static void 108printlink(char *name) 109{ 110 int lnklen; 111 char path[MAXPATHLEN]; 112 113 if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) { 114 warn("%s", name); 115 return; 116 } 117 path[lnklen] = '\0'; 118 (void)printf(" -> %s", path); 119} 120