The ls(1) (with -l option) and find(1) (with -ls option) utilties segment fault when operating on files with very large modification times. A recent disk corruption set a spurious bit in the mtime field of one of my files to 0x8000000630b0167 (576460753965089127) which is in year 18,266,940,962. I discovered the problem when running fsck_ffs(8) which uses ctime(3) to convert it to a readable format. Ctime cannot fit the year into its four character field, so returns ??? ??? ?? ??:??:?? ???? (typically Thu Nov 24 18:22:48 2021). With the filesystem mounted, I used `ls -l' to see how it would report the modification time and it segment faulted. The find(1) program also segment faulted (see script below). Both these utilities call the localtime(3) function to decode the modification time. Localtime(3) returns a pointer to a struct tm (which breaks things out into its component pieces: year, month, day, hour, minute, second). The ls(1) and find(1) utilities then print out the date based on the appropriate fields in the returned tm structure. Although not documented in the localtime(3) manual page, localtime(3) returns a NULL pointer if the passed in time translates to a year that will not fit in an "int" (which if "int" is 32-bits cannot hold the year 18,266,940,962). Since ls(1) and find(1) do not check for a NULL struct tm * return from localtime(3), they segment fault when they try to dereference it. When localtime(3) returns NULL, the attached patches produce a date string of "bad date val". This string is chosen because it has the same number of characters (12) and white spaces (2) as the usual date string, for example "Sep 3 22:06" or "May 15 2017". The most recent ANSI standard for localtime(3) does say that localtime(3) can return NULL (see https://pubs.opengroup.org/onlinepubs/9699919799/ and enter localtime in the search box). Our localtime(3) man page should be updated to indicate that NULL is a possible return. More importantly, there are over 100 uses of localtime(3) in the FreeBSD source tree (see Differential Revision D36474 for the list). Most do not check for a NULL return from localtime(3). Reported by: Peter Holm Reviewed by: kib, Chuck Silvers, Warner Losh MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D36474
840 lines
18 KiB
C
840 lines
18 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Michael Fischbein.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)print.c 8.4 (Berkeley) 4/17/94";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/acl.h>
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#include <err.h>
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#include <errno.h>
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#include <fts.h>
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#include <langinfo.h>
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#include <libutil.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <wchar.h>
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#ifdef COLORLS
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#include <ctype.h>
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#include <termcap.h>
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#include <signal.h>
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#endif
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#include "ls.h"
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#include "extern.h"
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static int printaname(const FTSENT *, u_long, u_long);
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static void printdev(size_t, dev_t);
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static void printlink(const FTSENT *);
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static void printtime(time_t);
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static int printtype(u_int);
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static void printsize(size_t, off_t);
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#ifdef COLORLS
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static void endcolor_termcap(int);
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static void endcolor_ansi(void);
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static void endcolor(int);
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static int colortype(mode_t);
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#endif
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static void aclmode(char *, const FTSENT *);
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#define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT)
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#ifdef COLORLS
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/* Most of these are taken from <sys/stat.h> */
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typedef enum Colors {
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C_DIR, /* directory */
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C_LNK, /* symbolic link */
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C_SOCK, /* socket */
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C_FIFO, /* pipe */
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C_EXEC, /* executable */
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C_BLK, /* block special */
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C_CHR, /* character special */
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C_SUID, /* setuid executable */
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C_SGID, /* setgid executable */
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C_WSDIR, /* directory writeble to others, with sticky
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* bit */
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C_WDIR, /* directory writeble to others, without
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* sticky bit */
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C_NUMCOLORS /* just a place-holder */
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} Colors;
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static const char *defcolors = "exfxcxdxbxegedabagacad";
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/* colors for file types */
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static struct {
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int num[2];
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bool bold;
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bool underline;
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} colors[C_NUMCOLORS];
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#endif
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static size_t padding_for_month[12];
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static size_t month_max_size = 0;
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void
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printscol(const DISPLAY *dp)
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{
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FTSENT *p;
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for (p = dp->list; p; p = p->fts_link) {
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if (IS_NOPRINT(p))
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continue;
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(void)printaname(p, dp->s_inode, dp->s_block);
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(void)putchar('\n');
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}
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}
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/*
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* print name in current style
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*/
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int
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printname(const char *name)
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{
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if (f_octal || f_octal_escape)
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return prn_octal(name);
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else if (f_nonprint)
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return prn_printable(name);
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else
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return prn_normal(name);
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}
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static const char *
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get_abmon(int mon)
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{
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switch (mon) {
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case 0: return (nl_langinfo(ABMON_1));
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case 1: return (nl_langinfo(ABMON_2));
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case 2: return (nl_langinfo(ABMON_3));
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case 3: return (nl_langinfo(ABMON_4));
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case 4: return (nl_langinfo(ABMON_5));
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case 5: return (nl_langinfo(ABMON_6));
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case 6: return (nl_langinfo(ABMON_7));
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case 7: return (nl_langinfo(ABMON_8));
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case 8: return (nl_langinfo(ABMON_9));
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case 9: return (nl_langinfo(ABMON_10));
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case 10: return (nl_langinfo(ABMON_11));
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case 11: return (nl_langinfo(ABMON_12));
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}
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/* should never happen */
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abort();
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}
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static size_t
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mbswidth(const char *month)
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{
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wchar_t wc;
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size_t width, donelen, clen, w;
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width = donelen = 0;
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while ((clen = mbrtowc(&wc, month + donelen, MB_LEN_MAX, NULL)) != 0) {
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if (clen == (size_t)-1 || clen == (size_t)-2)
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return (-1);
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donelen += clen;
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if ((w = wcwidth(wc)) == (size_t)-1)
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return (-1);
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width += w;
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}
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return (width);
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}
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static void
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compute_abbreviated_month_size(void)
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{
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int i;
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size_t width;
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size_t months_width[12];
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for (i = 0; i < 12; i++) {
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width = mbswidth(get_abmon(i));
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if (width == (size_t)-1) {
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month_max_size = -1;
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return;
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}
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months_width[i] = width;
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if (width > month_max_size)
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month_max_size = width;
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}
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for (i = 0; i < 12; i++)
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padding_for_month[i] = month_max_size - months_width[i];
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}
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void
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printlong(const DISPLAY *dp)
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{
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struct stat *sp;
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FTSENT *p;
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NAMES *np;
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char buf[20];
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#ifdef COLORLS
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int color_printed = 0;
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#endif
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if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) &&
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(f_longform || f_size)) {
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(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
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}
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for (p = dp->list; p; p = p->fts_link) {
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if (IS_NOPRINT(p))
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continue;
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sp = p->fts_statp;
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if (f_inode)
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(void)printf("%*ju ",
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dp->s_inode, (uintmax_t)sp->st_ino);
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if (f_size)
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(void)printf("%*jd ",
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dp->s_block, howmany(sp->st_blocks, blocksize));
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strmode(sp->st_mode, buf);
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aclmode(buf, p);
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np = p->fts_pointer;
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(void)printf("%s %*ju %-*s %-*s ", buf, dp->s_nlink,
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(uintmax_t)sp->st_nlink, dp->s_user, np->user, dp->s_group,
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np->group);
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if (f_flags)
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(void)printf("%-*s ", dp->s_flags, np->flags);
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if (f_label)
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(void)printf("%-*s ", dp->s_label, np->label);
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if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
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printdev(dp->s_size, sp->st_rdev);
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else
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printsize(dp->s_size, sp->st_size);
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if (f_accesstime)
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printtime(sp->st_atime);
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else if (f_birthtime)
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printtime(sp->st_birthtime);
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else if (f_statustime)
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printtime(sp->st_ctime);
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else
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printtime(sp->st_mtime);
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#ifdef COLORLS
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if (f_color)
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color_printed = colortype(sp->st_mode);
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#endif
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(void)printname(p->fts_name);
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#ifdef COLORLS
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if (f_color && color_printed)
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endcolor(0);
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#endif
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if (f_type)
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(void)printtype(sp->st_mode);
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if (S_ISLNK(sp->st_mode))
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printlink(p);
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(void)putchar('\n');
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}
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}
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void
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printstream(const DISPLAY *dp)
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{
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FTSENT *p;
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int chcnt;
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for (p = dp->list, chcnt = 0; p; p = p->fts_link) {
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if (p->fts_number == NO_PRINT)
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continue;
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/* XXX strlen does not take octal escapes into account. */
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if (strlen(p->fts_name) + chcnt +
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(p->fts_link ? 2 : 0) >= (unsigned)termwidth) {
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putchar('\n');
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chcnt = 0;
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}
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chcnt += printaname(p, dp->s_inode, dp->s_block);
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if (p->fts_link) {
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printf(", ");
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chcnt += 2;
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}
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}
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if (chcnt)
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putchar('\n');
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}
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void
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printcol(const DISPLAY *dp)
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{
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static FTSENT **array;
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static int lastentries = -1;
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FTSENT *p;
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FTSENT **narray;
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int base;
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int chcnt;
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int cnt;
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int col;
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int colwidth;
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int endcol;
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int num;
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int numcols;
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int numrows;
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int row;
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int tabwidth;
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if (f_notabs)
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tabwidth = 1;
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else
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tabwidth = 8;
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/*
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* Have to do random access in the linked list -- build a table
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* of pointers.
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*/
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if (dp->entries > lastentries) {
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if ((narray =
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realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
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warn(NULL);
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printscol(dp);
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return;
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}
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lastentries = dp->entries;
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array = narray;
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}
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for (p = dp->list, num = 0; p; p = p->fts_link)
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if (p->fts_number != NO_PRINT)
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array[num++] = p;
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colwidth = dp->maxlen;
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if (f_inode)
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colwidth += dp->s_inode + 1;
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if (f_size)
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colwidth += dp->s_block + 1;
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if (f_type)
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colwidth += 1;
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colwidth = (colwidth + tabwidth) & ~(tabwidth - 1);
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if (termwidth < 2 * colwidth) {
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printscol(dp);
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return;
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}
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numcols = termwidth / colwidth;
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numrows = num / numcols;
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if (num % numcols)
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++numrows;
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if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) &&
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(f_longform || f_size)) {
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(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
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}
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base = 0;
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for (row = 0; row < numrows; ++row) {
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endcol = colwidth;
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if (!f_sortacross)
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base = row;
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for (col = 0, chcnt = 0; col < numcols; ++col) {
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chcnt += printaname(array[base], dp->s_inode,
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dp->s_block);
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if (f_sortacross)
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base++;
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else
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base += numrows;
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if (base >= num)
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break;
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while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1)))
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<= endcol) {
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if (f_sortacross && col + 1 >= numcols)
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break;
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(void)putchar(f_notabs ? ' ' : '\t');
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chcnt = cnt;
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}
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endcol += colwidth;
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}
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(void)putchar('\n');
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}
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}
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/*
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* print [inode] [size] name
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* return # of characters printed, no trailing characters.
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*/
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static int
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printaname(const FTSENT *p, u_long inodefield, u_long sizefield)
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{
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struct stat *sp;
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int chcnt;
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#ifdef COLORLS
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int color_printed = 0;
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#endif
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sp = p->fts_statp;
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chcnt = 0;
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if (f_inode)
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chcnt += printf("%*ju ",
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(int)inodefield, (uintmax_t)sp->st_ino);
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if (f_size)
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chcnt += printf("%*jd ",
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(int)sizefield, howmany(sp->st_blocks, blocksize));
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#ifdef COLORLS
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if (f_color)
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color_printed = colortype(sp->st_mode);
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#endif
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chcnt += printname(p->fts_name);
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#ifdef COLORLS
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if (f_color && color_printed)
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endcolor(0);
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#endif
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if (f_type)
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chcnt += printtype(sp->st_mode);
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return (chcnt);
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}
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/*
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* Print device special file major and minor numbers.
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*/
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static void
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printdev(size_t width, dev_t dev)
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{
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(void)printf("%#*jx ", (u_int)width, (uintmax_t)dev);
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}
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static void
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ls_strftime(char *str, size_t len, const char *fmt, const struct tm *tm)
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{
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char *posb, nfmt[BUFSIZ];
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const char *format = fmt;
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if ((posb = strstr(fmt, "%b")) != NULL) {
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if (month_max_size == 0) {
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compute_abbreviated_month_size();
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}
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if (month_max_size > 0 && tm != NULL) {
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snprintf(nfmt, sizeof(nfmt), "%.*s%s%*s%s",
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(int)(posb - fmt), fmt,
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get_abmon(tm->tm_mon),
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(int)padding_for_month[tm->tm_mon],
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"",
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posb + 2);
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format = nfmt;
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}
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}
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if (tm != NULL)
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strftime(str, len, format, tm);
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else
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strlcpy(str, "bad date val", len);
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}
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static void
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printtime(time_t ftime)
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{
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char longstring[80];
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static time_t now = 0;
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const char *format;
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static int d_first = -1;
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if (d_first < 0)
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d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
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if (now == 0)
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now = time(NULL);
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#define SIXMONTHS ((365 / 2) * 86400)
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if (f_timeformat) /* user specified format */
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format = f_timeformat;
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else if (f_sectime)
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/* mmm dd hh:mm:ss yyyy || dd mmm hh:mm:ss yyyy */
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format = d_first ? "%e %b %T %Y" : "%b %e %T %Y";
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else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
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/* mmm dd hh:mm || dd mmm hh:mm */
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format = d_first ? "%e %b %R" : "%b %e %R";
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else
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/* mmm dd yyyy || dd mmm yyyy */
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format = d_first ? "%e %b %Y" : "%b %e %Y";
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ls_strftime(longstring, sizeof(longstring), format, localtime(&ftime));
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fputs(longstring, stdout);
|
|
fputc(' ', stdout);
|
|
}
|
|
|
|
static int
|
|
printtype(u_int mode)
|
|
{
|
|
|
|
if (f_slash) {
|
|
if ((mode & S_IFMT) == S_IFDIR) {
|
|
(void)putchar('/');
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
switch (mode & S_IFMT) {
|
|
case S_IFDIR:
|
|
(void)putchar('/');
|
|
return (1);
|
|
case S_IFIFO:
|
|
(void)putchar('|');
|
|
return (1);
|
|
case S_IFLNK:
|
|
(void)putchar('@');
|
|
return (1);
|
|
case S_IFSOCK:
|
|
(void)putchar('=');
|
|
return (1);
|
|
case S_IFWHT:
|
|
(void)putchar('%');
|
|
return (1);
|
|
default:
|
|
break;
|
|
}
|
|
if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
|
|
(void)putchar('*');
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#ifdef COLORLS
|
|
static int
|
|
putch(int c)
|
|
{
|
|
(void)putchar(c);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
writech(int c)
|
|
{
|
|
char tmp = (char)c;
|
|
|
|
(void)write(STDOUT_FILENO, &tmp, 1);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
printcolor_termcap(Colors c)
|
|
{
|
|
char *ansiseq;
|
|
|
|
if (colors[c].bold)
|
|
tputs(enter_bold, 1, putch);
|
|
if (colors[c].underline)
|
|
tputs(enter_underline, 1, putch);
|
|
|
|
if (colors[c].num[0] != -1) {
|
|
ansiseq = tgoto(ansi_fgcol, 0, colors[c].num[0]);
|
|
if (ansiseq)
|
|
tputs(ansiseq, 1, putch);
|
|
}
|
|
if (colors[c].num[1] != -1) {
|
|
ansiseq = tgoto(ansi_bgcol, 0, colors[c].num[1]);
|
|
if (ansiseq)
|
|
tputs(ansiseq, 1, putch);
|
|
}
|
|
}
|
|
|
|
static void
|
|
printcolor_ansi(Colors c)
|
|
{
|
|
|
|
printf("\033[");
|
|
|
|
if (colors[c].bold)
|
|
printf("1");
|
|
if (colors[c].underline)
|
|
printf(";4");
|
|
if (colors[c].num[0] != -1)
|
|
printf(";3%d", colors[c].num[0]);
|
|
if (colors[c].num[1] != -1)
|
|
printf(";4%d", colors[c].num[1]);
|
|
printf("m");
|
|
}
|
|
|
|
static void
|
|
printcolor(Colors c)
|
|
{
|
|
|
|
if (explicitansi)
|
|
printcolor_ansi(c);
|
|
else
|
|
printcolor_termcap(c);
|
|
}
|
|
|
|
static void
|
|
endcolor_termcap(int sig)
|
|
{
|
|
|
|
tputs(ansi_coloff, 1, sig ? writech : putch);
|
|
tputs(attrs_off, 1, sig ? writech : putch);
|
|
}
|
|
|
|
static void
|
|
endcolor_ansi(void)
|
|
{
|
|
|
|
printf("\33[m");
|
|
}
|
|
|
|
static void
|
|
endcolor(int sig)
|
|
{
|
|
|
|
if (explicitansi)
|
|
endcolor_ansi();
|
|
else
|
|
endcolor_termcap(sig);
|
|
}
|
|
|
|
static int
|
|
colortype(mode_t mode)
|
|
{
|
|
switch (mode & S_IFMT) {
|
|
case S_IFDIR:
|
|
if (mode & S_IWOTH)
|
|
if (mode & S_ISTXT)
|
|
printcolor(C_WSDIR);
|
|
else
|
|
printcolor(C_WDIR);
|
|
else
|
|
printcolor(C_DIR);
|
|
return (1);
|
|
case S_IFLNK:
|
|
printcolor(C_LNK);
|
|
return (1);
|
|
case S_IFSOCK:
|
|
printcolor(C_SOCK);
|
|
return (1);
|
|
case S_IFIFO:
|
|
printcolor(C_FIFO);
|
|
return (1);
|
|
case S_IFBLK:
|
|
printcolor(C_BLK);
|
|
return (1);
|
|
case S_IFCHR:
|
|
printcolor(C_CHR);
|
|
return (1);
|
|
default:;
|
|
}
|
|
if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
|
|
if (mode & S_ISUID)
|
|
printcolor(C_SUID);
|
|
else if (mode & S_ISGID)
|
|
printcolor(C_SGID);
|
|
else
|
|
printcolor(C_EXEC);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
parsecolors(const char *cs)
|
|
{
|
|
int i;
|
|
int j;
|
|
size_t len;
|
|
char c[2];
|
|
short legacy_warn = 0;
|
|
|
|
if (cs == NULL)
|
|
cs = ""; /* LSCOLORS not set */
|
|
len = strlen(cs);
|
|
for (i = 0; i < (int)C_NUMCOLORS; i++) {
|
|
colors[i].bold = false;
|
|
colors[i].underline = false;
|
|
|
|
if (len <= 2 * (size_t)i) {
|
|
c[0] = defcolors[2 * i];
|
|
c[1] = defcolors[2 * i + 1];
|
|
} else {
|
|
c[0] = cs[2 * i];
|
|
c[1] = cs[2 * i + 1];
|
|
}
|
|
for (j = 0; j < 2; j++) {
|
|
/* Legacy colours used 0-7 */
|
|
if (c[j] >= '0' && c[j] <= '7') {
|
|
colors[i].num[j] = c[j] - '0';
|
|
if (!legacy_warn) {
|
|
warnx("LSCOLORS should use "
|
|
"characters a-h instead of 0-9 ("
|
|
"see the manual page)");
|
|
}
|
|
legacy_warn = 1;
|
|
} else if (c[j] >= 'a' && c[j] <= 'h')
|
|
colors[i].num[j] = c[j] - 'a';
|
|
else if (c[j] >= 'A' && c[j] <= 'H') {
|
|
colors[i].num[j] = c[j] - 'A';
|
|
if (j == 1)
|
|
colors[i].underline = true;
|
|
else
|
|
colors[i].bold = true;
|
|
} else if (tolower((unsigned char)c[j]) == 'x') {
|
|
if (j == 1 && c[j] == 'X')
|
|
colors[i].underline = true;
|
|
colors[i].num[j] = -1;
|
|
} else {
|
|
warnx("invalid character '%c' in LSCOLORS"
|
|
" env var", c[j]);
|
|
colors[i].num[j] = -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
colorquit(int sig)
|
|
{
|
|
endcolor(sig);
|
|
|
|
(void)signal(sig, SIG_DFL);
|
|
(void)kill(getpid(), sig);
|
|
}
|
|
|
|
#endif /* COLORLS */
|
|
|
|
static void
|
|
printlink(const FTSENT *p)
|
|
{
|
|
int lnklen;
|
|
char name[MAXPATHLEN + 1];
|
|
char path[MAXPATHLEN + 1];
|
|
|
|
if (p->fts_level == FTS_ROOTLEVEL)
|
|
(void)snprintf(name, sizeof(name), "%s", p->fts_name);
|
|
else
|
|
(void)snprintf(name, sizeof(name),
|
|
"%s/%s", p->fts_parent->fts_accpath, p->fts_name);
|
|
if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
|
|
(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
|
|
return;
|
|
}
|
|
path[lnklen] = '\0';
|
|
(void)printf(" -> ");
|
|
(void)printname(path);
|
|
}
|
|
|
|
static void
|
|
printsize(size_t width, off_t bytes)
|
|
{
|
|
|
|
if (f_humanval) {
|
|
/*
|
|
* Reserve one space before the size and allocate room for
|
|
* the trailing '\0'.
|
|
*/
|
|
char buf[HUMANVALSTR_LEN - 1 + 1];
|
|
|
|
humanize_number(buf, sizeof(buf), (int64_t)bytes, "",
|
|
HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
|
|
(void)printf("%*s ", (u_int)width, buf);
|
|
} else if (f_thousands) { /* with commas */
|
|
/* This format assignment needed to work round gcc bug. */
|
|
const char *format = "%*j'd ";
|
|
(void)printf(format, (u_int)width, bytes);
|
|
} else
|
|
(void)printf("%*jd ", (u_int)width, bytes);
|
|
}
|
|
|
|
/*
|
|
* Add a + after the standard rwxrwxrwx mode if the file has an
|
|
* ACL. strmode() reserves space at the end of the string.
|
|
*/
|
|
static void
|
|
aclmode(char *buf, const FTSENT *p)
|
|
{
|
|
char name[MAXPATHLEN + 1];
|
|
int ret, trivial;
|
|
static dev_t previous_dev = NODEV;
|
|
static int supports_acls = -1;
|
|
static int type = ACL_TYPE_ACCESS;
|
|
acl_t facl;
|
|
|
|
/*
|
|
* XXX: ACLs are not supported on whiteouts and device files
|
|
* residing on UFS.
|
|
*/
|
|
if (S_ISCHR(p->fts_statp->st_mode) || S_ISBLK(p->fts_statp->st_mode) ||
|
|
S_ISWHT(p->fts_statp->st_mode))
|
|
return;
|
|
|
|
if (previous_dev == p->fts_statp->st_dev && supports_acls == 0)
|
|
return;
|
|
|
|
if (p->fts_level == FTS_ROOTLEVEL)
|
|
snprintf(name, sizeof(name), "%s", p->fts_name);
|
|
else
|
|
snprintf(name, sizeof(name), "%s/%s",
|
|
p->fts_parent->fts_accpath, p->fts_name);
|
|
|
|
if (previous_dev != p->fts_statp->st_dev) {
|
|
previous_dev = p->fts_statp->st_dev;
|
|
supports_acls = 0;
|
|
|
|
ret = lpathconf(name, _PC_ACL_NFS4);
|
|
if (ret > 0) {
|
|
type = ACL_TYPE_NFS4;
|
|
supports_acls = 1;
|
|
} else if (ret < 0 && errno != EINVAL) {
|
|
warn("%s", name);
|
|
return;
|
|
}
|
|
if (supports_acls == 0) {
|
|
ret = lpathconf(name, _PC_ACL_EXTENDED);
|
|
if (ret > 0) {
|
|
type = ACL_TYPE_ACCESS;
|
|
supports_acls = 1;
|
|
} else if (ret < 0 && errno != EINVAL) {
|
|
warn("%s", name);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
if (supports_acls == 0)
|
|
return;
|
|
facl = acl_get_link_np(name, type);
|
|
if (facl == NULL) {
|
|
warn("%s", name);
|
|
return;
|
|
}
|
|
if (acl_is_trivial_np(facl, &trivial)) {
|
|
acl_free(facl);
|
|
warn("%s", name);
|
|
return;
|
|
}
|
|
if (!trivial)
|
|
buf[10] = '+';
|
|
acl_free(facl);
|
|
}
|