tar/read.c - third_party/libarchive - Git at Google

 /*-
  * Copyright (c) 2003-2007 Tim Kientzle
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "bsdtar_platform.h"
 __FBSDID("$FreeBSD: src/usr.bin/tar/read.c,v 1.40 2008/08/21 06:41:14 kientzle Exp $");

 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
 #ifdef MAJOR_IN_MKDEV
 #include <sys/mkdev.h>
 #elif defined(MAJOR_IN_SYSMACROS)
 #include <sys/sysmacros.h>
 #endif
 #ifdef HAVE_SYS_PARAM_H
 #include <sys/param.h>
 #endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif

 #ifdef HAVE_ERRNO_H
 #include <errno.h>
 #endif
 #ifdef HAVE_GRP_H
 #include <grp.h>
 #endif
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
 #endif
 #ifdef HAVE_PWD_H
 #include <pwd.h>
 #endif
 #include <stdio.h>
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif
 #ifdef HAVE_STRING_H
 #include <string.h>
 #endif
 #ifdef HAVE_TIME_H
 #include <time.h>
 #endif
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif

 #include "bsdtar.h"

 static void	list_item_verbose(struct bsdtar *, FILE *,
 		    struct archive_entry *);
 static void	read_archive(struct bsdtar *bsdtar, char mode);

 void
 tar_mode_t(struct bsdtar *bsdtar)
 {
 	read_archive(bsdtar, 't');
 	unmatched_inclusions_warn(bsdtar, "Not found in archive");
 }

 void
 tar_mode_x(struct bsdtar *bsdtar)
 {
 	/* We want to catch SIGINFO and SIGUSR1. */
 	siginfo_init(bsdtar);

 	read_archive(bsdtar, 'x');

 	unmatched_inclusions_warn(bsdtar, "Not found in archive");
 	/* Restore old SIGINFO + SIGUSR1 handlers. */
 	siginfo_done(bsdtar);
 }

 static void
 progress_func(void * cookie)
 {
 	struct bsdtar * bsdtar = cookie;

 	siginfo_printinfo(bsdtar, 0);
 }

 /*
  * Handle 'x' and 't' modes.
  */
 static void
 read_archive(struct bsdtar *bsdtar, char mode)
 {
 	FILE			 *out;
 	struct archive		 *a;
 	struct archive_entry	 *entry;
 	const struct stat	 *st;
 	int			  r;

 	while (*bsdtar->argv) {
 		include(bsdtar, *bsdtar->argv);
 		bsdtar->argv++;
 	}

 	if (bsdtar->names_from_file != NULL)
 		include_from_file(bsdtar, bsdtar->names_from_file);

 	a = archive_read_new();
 	if (bsdtar->compress_program != NULL)
 		archive_read_support_compression_program(a, bsdtar->compress_program);
 	else
 		archive_read_support_compression_all(a);
 	archive_read_support_format_all(a);
 	if (ARCHIVE_OK != archive_read_set_options(a, bsdtar->option_options))
 		bsdtar_errc(bsdtar, 1, 0, archive_error_string(a));
 	if (archive_read_open_file(a, bsdtar->filename,
 	    bsdtar->bytes_per_block != 0 ? bsdtar->bytes_per_block :
 	    DEFAULT_BYTES_PER_BLOCK))
 		bsdtar_errc(bsdtar, 1, 0, "Error opening archive: %s",
 		    archive_error_string(a));

 	do_chdir(bsdtar);

 	if (mode == 'x') {
 		/* Set an extract callback so that we can handle SIGINFO. */
 		archive_read_extract_set_progress_callback(a, progress_func,
 		    bsdtar);
 	}

 	if (mode == 'x' && bsdtar->option_chroot) {
 #if HAVE_CHROOT
 		if (chroot(".") != 0)
 			bsdtar_errc(bsdtar, 1, errno, "Can't chroot to \".\"");
 #else
 		bsdtar_errc(bsdtar, 1, 0,
 		    "chroot isn't supported on this platform");
 #endif
 	}

 	for (;;) {
 		/* Support --fast-read option */
 		if (bsdtar->option_fast_read &&
 		    unmatched_inclusions(bsdtar) == 0)
 			break;

 		r = archive_read_next_header(a, &entry);
 		if (r == ARCHIVE_EOF)
 			break;
 		if (r < ARCHIVE_OK)
 			bsdtar_warnc(bsdtar, 0, "%s", archive_error_string(a));
 		if (r <= ARCHIVE_WARN)
 			bsdtar->return_value = 1;
 		if (r == ARCHIVE_RETRY) {
 			/* Retryable error: try again */
 			bsdtar_warnc(bsdtar, 0, "Retrying...");
 			continue;
 		}
 		if (r == ARCHIVE_FATAL)
 			break;

 		if (bsdtar->option_numeric_owner) {
 			archive_entry_set_uname(entry, NULL);
 			archive_entry_set_gname(entry, NULL);
 		}

 		/*
 		 * Exclude entries that are too old.
 		 */
 		st = archive_entry_stat(entry);
 		if (bsdtar->newer_ctime_sec > 0) {
 			if (st->st_ctime < bsdtar->newer_ctime_sec)
 				continue; /* Too old, skip it. */
 			if (st->st_ctime == bsdtar->newer_ctime_sec
 			    && ARCHIVE_STAT_CTIME_NANOS(st)
 			    <= bsdtar->newer_ctime_nsec)
 				continue; /* Too old, skip it. */
 		}
 		if (bsdtar->newer_mtime_sec > 0) {
 			if (st->st_mtime < bsdtar->newer_mtime_sec)
 				continue; /* Too old, skip it. */
 			if (st->st_mtime == bsdtar->newer_mtime_sec
 			    && ARCHIVE_STAT_MTIME_NANOS(st)
 			    <= bsdtar->newer_mtime_nsec)
 				continue; /* Too old, skip it. */
 		}

 		/*
 		 * Note that pattern exclusions are checked before
 		 * pathname rewrites are handled.  This gives more
 		 * control over exclusions, since rewrites always lose
 		 * information.  (For example, consider a rewrite
 		 * s/foo[0-9]/foo/.  If we check exclusions after the
 		 * rewrite, there would be no way to exclude foo1/bar
 		 * while allowing foo2/bar.)
 		 */
 		if (excluded(bsdtar, archive_entry_pathname(entry)))
 			continue; /* Excluded by a pattern test. */

 		if (mode == 't') {
 			/* Perversely, gtar uses -O to mean "send to stderr"
 			 * when used with -t. */
 			out = bsdtar->option_stdout ? stderr : stdout;

 			/*
 			 * TODO: Provide some reasonable way to
 			 * preview rewrites.  gtar always displays
 			 * the unedited path in -t output, which means
 			 * you cannot easily preview rewrites.
 			 */
 			if (bsdtar->verbose < 2)
 				safe_fprintf(out, "%s",
 				    archive_entry_pathname(entry));
 			else
 				list_item_verbose(bsdtar, out, entry);
 			fflush(out);
 			r = archive_read_data_skip(a);
 			if (r == ARCHIVE_WARN) {
 				fprintf(out, "\n");
 				bsdtar_warnc(bsdtar, 0, "%s",
 				    archive_error_string(a));
 			}
 			if (r == ARCHIVE_RETRY) {
 				fprintf(out, "\n");
 				bsdtar_warnc(bsdtar, 0, "%s",
 				    archive_error_string(a));
 			}
 			if (r == ARCHIVE_FATAL) {
 				fprintf(out, "\n");
 				bsdtar_warnc(bsdtar, 0, "%s",
 				    archive_error_string(a));
 				bsdtar->return_value = 1;
 				break;
 			}
 			fprintf(out, "\n");
 		} else {
 			/* Note: some rewrite failures prevent extraction. */
 			if (edit_pathname(bsdtar, entry))
 				continue; /* Excluded by a rewrite failure. */

 			if (bsdtar->option_interactive &&
 			    !yes("extract '%s'", archive_entry_pathname(entry)))
 				continue;

 			/*
 			 * Format here is from SUSv2, including the
 			 * deferred '\n'.
 			 */
 			if (bsdtar->verbose) {
 				safe_fprintf(stderr, "x %s",
 				    archive_entry_pathname(entry));
 				fflush(stderr);
 			}

 			/* Tell the SIGINFO-handler code what we're doing. */
 			siginfo_setinfo(bsdtar, "extracting",
 			    archive_entry_pathname(entry), 0);
 			siginfo_printinfo(bsdtar, 0);

 			if (bsdtar->option_stdout)
 				r = archive_read_data_into_fd(a, 1);
 			else
 				r = archive_read_extract(a, entry,
 				    bsdtar->extract_flags);
 			if (r != ARCHIVE_OK) {
 				if (!bsdtar->verbose)
 					safe_fprintf(stderr, "%s",
 					    archive_entry_pathname(entry));
 				safe_fprintf(stderr, ": %s",
 				    archive_error_string(a));
 				if (!bsdtar->verbose)
 					fprintf(stderr, "\n");
 				bsdtar->return_value = 1;
 			}
 			if (bsdtar->verbose)
 				fprintf(stderr, "\n");
 			if (r == ARCHIVE_FATAL)
 				break;
 		}
 	}


 	r = archive_read_close(a);
 	if (r != ARCHIVE_OK)
 		bsdtar_warnc(bsdtar, 0, "%s", archive_error_string(a));
 	if (r <= ARCHIVE_WARN)
 		bsdtar->return_value = 1;

 	if (bsdtar->verbose > 2)
 		fprintf(stdout, "Archive Format: %s,  Compression: %s\n",
 		    archive_format_name(a), archive_compression_name(a));

 	archive_read_finish(a);
 }


 /*
  * Display information about the current file.
  *
  * The format here roughly duplicates the output of 'ls -l'.
  * This is based on SUSv2, where 'tar tv' is documented as
  * listing additional information in an "unspecified format,"
  * and 'pax -l' is documented as using the same format as 'ls -l'.
  */
 static void
 list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry)
 {
 	const struct stat	*st;
 	char			 tmp[100];
 	size_t			 w;
 	const char		*p;
 	const char		*fmt;
 	time_t			 tim;
 	static time_t		 now;

 	st = archive_entry_stat(entry);

 	/*
 	 * We avoid collecting the entire list in memory at once by
 	 * listing things as we see them.  However, that also means we can't
 	 * just pre-compute the field widths.  Instead, we start with guesses
 	 * and just widen them as necessary.  These numbers are completely
 	 * arbitrary.
 	 */
 	if (!bsdtar->u_width) {
 		bsdtar->u_width = 6;
 		bsdtar->gs_width = 13;
 	}
 	if (!now)
 		time(&now);
 	fprintf(out, "%s %d ",
 	    archive_entry_strmode(entry),
 	    (int)(st->st_nlink));

 	/* Use uname if it's present, else uid. */
 	p = archive_entry_uname(entry);
 	if ((p == NULL) || (*p == '\0')) {
 		sprintf(tmp, "%lu ", (unsigned long)st->st_uid);
 		p = tmp;
 	}
 	w = strlen(p);
 	if (w > bsdtar->u_width)
 		bsdtar->u_width = w;
 	fprintf(out, "%-*s ", (int)bsdtar->u_width, p);

 	/* Use gname if it's present, else gid. */
 	p = archive_entry_gname(entry);
 	if (p != NULL && p[0] != '\0') {
 		fprintf(out, "%s", p);
 		w = strlen(p);
 	} else {
 		sprintf(tmp, "%lu", (unsigned long)st->st_gid);
 		w = strlen(tmp);
 		fprintf(out, "%s", tmp);
 	}

 	/*
 	 * Print device number or file size, right-aligned so as to make
 	 * total width of group and devnum/filesize fields be gs_width.
 	 * If gs_width is too small, grow it.
 	 */
 	if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
 		sprintf(tmp, "%lu,%lu",
 		    (unsigned long)major(st->st_rdev),
 		    (unsigned long)minor(st->st_rdev)); /* ls(1) also casts here. */
 	} else {
 		/*
 		 * Note the use of platform-dependent macros to format
 		 * the filesize here.  We need the format string and the
 		 * corresponding type for the cast.
 		 */
 		sprintf(tmp, BSDTAR_FILESIZE_PRINTF,
 		    (BSDTAR_FILESIZE_TYPE)st->st_size);
 	}
 	if (w + strlen(tmp) >= bsdtar->gs_width)
 		bsdtar->gs_width = w+strlen(tmp)+1;
 	fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp);

 	/* Format the time using 'ls -l' conventions. */
 	tim = (time_t)st->st_mtime;
 #if defined(_WIN32) && !defined(__CYGWIN__)
 	/* Windows' strftime function does not support %e format. */
 	if (abs(tim - now) > (365/2)*86400)
 		fmt = bsdtar->day_first ? "%d %b  %Y" : "%b %d  %Y";
 	else
 		fmt = bsdtar->day_first ? "%d %b %H:%M" : "%b %d %H:%M";
 #else
 	if (abs(tim - now) > (365/2)*86400)
 		fmt = bsdtar->day_first ? "%e %b  %Y" : "%b %e  %Y";
 	else
 		fmt = bsdtar->day_first ? "%e %b %H:%M" : "%b %e %H:%M";
 #endif
 	strftime(tmp, sizeof(tmp), fmt, localtime(&tim));
 	fprintf(out, " %s ", tmp);
 	safe_fprintf(out, "%s", archive_entry_pathname(entry));

 	/* Extra information for links. */
 	if (archive_entry_hardlink(entry)) /* Hard link */
 		safe_fprintf(out, " link to %s",
 		    archive_entry_hardlink(entry));
 	else if (S_ISLNK(st->st_mode)) /* Symbolic link */
 		safe_fprintf(out, " -> %s", archive_entry_symlink(entry));
 }
	/*-
	* Copyright (c) 2003-2007 Tim Kientzle
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "bsdtar_platform.h"
	__FBSDID("$FreeBSD: src/usr.bin/tar/read.c,v 1.40 2008/08/21 06:41:14 kientzle Exp $");

	#ifdef HAVE_SYS_TYPES_H
	#include <sys/types.h>
	#endif
	#ifdef MAJOR_IN_MKDEV
	#include <sys/mkdev.h>
	#elif defined(MAJOR_IN_SYSMACROS)
	#include <sys/sysmacros.h>
	#endif
	#ifdef HAVE_SYS_PARAM_H
	#include <sys/param.h>
	#endif
	#ifdef HAVE_SYS_STAT_H
	#include <sys/stat.h>
	#endif

	#ifdef HAVE_ERRNO_H
	#include <errno.h>
	#endif
	#ifdef HAVE_GRP_H
	#include <grp.h>
	#endif
	#ifdef HAVE_LIMITS_H
	#include <limits.h>
	#endif
	#ifdef HAVE_PWD_H
	#include <pwd.h>
	#endif
	#include <stdio.h>
	#ifdef HAVE_STDLIB_H
	#include <stdlib.h>
	#endif
	#ifdef HAVE_STRING_H
	#include <string.h>
	#endif
	#ifdef HAVE_TIME_H
	#include <time.h>
	#endif
	#ifdef HAVE_UNISTD_H
	#include <unistd.h>
	#endif

	#include "bsdtar.h"

	static void list_item_verbose(struct bsdtar , FILE ,
	struct archive_entry *);
	static void read_archive(struct bsdtar *bsdtar, char mode);

	void
	tar_mode_t(struct bsdtar *bsdtar)
	{
	read_archive(bsdtar, 't');
	unmatched_inclusions_warn(bsdtar, "Not found in archive");
	}

	void
	tar_mode_x(struct bsdtar *bsdtar)
	{
	/* We want to catch SIGINFO and SIGUSR1. */
	siginfo_init(bsdtar);

	read_archive(bsdtar, 'x');

	unmatched_inclusions_warn(bsdtar, "Not found in archive");
	/* Restore old SIGINFO + SIGUSR1 handlers. */
	siginfo_done(bsdtar);
	}

	static void
	progress_func(void * cookie)
	{
	struct bsdtar * bsdtar = cookie;

	siginfo_printinfo(bsdtar, 0);
	}

	/*
	* Handle 'x' and 't' modes.
	*/
	static void
	read_archive(struct bsdtar *bsdtar, char mode)
	{
	FILE *out;
	struct archive *a;
	struct archive_entry *entry;
	const struct stat *st;
	int r;

	while (*bsdtar->argv) {
	include(bsdtar, *bsdtar->argv);
	bsdtar->argv++;
	}

	if (bsdtar->names_from_file != NULL)
	include_from_file(bsdtar, bsdtar->names_from_file);

	a = archive_read_new();
	if (bsdtar->compress_program != NULL)
	archive_read_support_compression_program(a, bsdtar->compress_program);
	else
	archive_read_support_compression_all(a);
	archive_read_support_format_all(a);
	if (ARCHIVE_OK != archive_read_set_options(a, bsdtar->option_options))
	bsdtar_errc(bsdtar, 1, 0, archive_error_string(a));
	if (archive_read_open_file(a, bsdtar->filename,
	bsdtar->bytes_per_block != 0 ? bsdtar->bytes_per_block :
	DEFAULT_BYTES_PER_BLOCK))
	bsdtar_errc(bsdtar, 1, 0, "Error opening archive: %s",
	archive_error_string(a));

	do_chdir(bsdtar);

	if (mode == 'x') {
	/* Set an extract callback so that we can handle SIGINFO. */
	archive_read_extract_set_progress_callback(a, progress_func,
	bsdtar);
	}

	if (mode == 'x' && bsdtar->option_chroot) {
	#if HAVE_CHROOT
	if (chroot(".") != 0)
	bsdtar_errc(bsdtar, 1, errno, "Can't chroot to \".\"");
	#else
	bsdtar_errc(bsdtar, 1, 0,
	"chroot isn't supported on this platform");
	#endif
	}

	for (;;) {
	/* Support --fast-read option */
	if (bsdtar->option_fast_read &&
	unmatched_inclusions(bsdtar) == 0)
	break;

	r = archive_read_next_header(a, &entry);
	if (r == ARCHIVE_EOF)
	break;
	if (r < ARCHIVE_OK)
	bsdtar_warnc(bsdtar, 0, "%s", archive_error_string(a));
	if (r <= ARCHIVE_WARN)
	bsdtar->return_value = 1;
	if (r == ARCHIVE_RETRY) {
	/* Retryable error: try again */
	bsdtar_warnc(bsdtar, 0, "Retrying...");
	continue;
	}
	if (r == ARCHIVE_FATAL)
	break;

	if (bsdtar->option_numeric_owner) {
	archive_entry_set_uname(entry, NULL);
	archive_entry_set_gname(entry, NULL);
	}

	/*
	* Exclude entries that are too old.
	*/
	st = archive_entry_stat(entry);
	if (bsdtar->newer_ctime_sec > 0) {
	if (st->st_ctime < bsdtar->newer_ctime_sec)
	continue; /* Too old, skip it. */
	if (st->st_ctime == bsdtar->newer_ctime_sec
	&& ARCHIVE_STAT_CTIME_NANOS(st)
	<= bsdtar->newer_ctime_nsec)
	continue; /* Too old, skip it. */
	}
	if (bsdtar->newer_mtime_sec > 0) {
	if (st->st_mtime < bsdtar->newer_mtime_sec)
	continue; /* Too old, skip it. */
	if (st->st_mtime == bsdtar->newer_mtime_sec
	&& ARCHIVE_STAT_MTIME_NANOS(st)
	<= bsdtar->newer_mtime_nsec)
	continue; /* Too old, skip it. */
	}

	/*
	* Note that pattern exclusions are checked before
	* pathname rewrites are handled. This gives more
	* control over exclusions, since rewrites always lose
	* information. (For example, consider a rewrite
	* s/foo[0-9]/foo/. If we check exclusions after the
	* rewrite, there would be no way to exclude foo1/bar
	* while allowing foo2/bar.)
	*/
	if (excluded(bsdtar, archive_entry_pathname(entry)))
	continue; /* Excluded by a pattern test. */

	if (mode == 't') {
	/* Perversely, gtar uses -O to mean "send to stderr"
	* when used with -t. */
	out = bsdtar->option_stdout ? stderr : stdout;

	/*
	* TODO: Provide some reasonable way to
	* preview rewrites. gtar always displays
	* the unedited path in -t output, which means
	* you cannot easily preview rewrites.
	*/
	if (bsdtar->verbose < 2)
	safe_fprintf(out, "%s",
	archive_entry_pathname(entry));
	else
	list_item_verbose(bsdtar, out, entry);
	fflush(out);
	r = archive_read_data_skip(a);
	if (r == ARCHIVE_WARN) {
	fprintf(out, "\n");
	bsdtar_warnc(bsdtar, 0, "%s",
	archive_error_string(a));
	}
	if (r == ARCHIVE_RETRY) {
	fprintf(out, "\n");
	bsdtar_warnc(bsdtar, 0, "%s",
	archive_error_string(a));
	}
	if (r == ARCHIVE_FATAL) {
	fprintf(out, "\n");
	bsdtar_warnc(bsdtar, 0, "%s",
	archive_error_string(a));
	bsdtar->return_value = 1;
	break;
	}
	fprintf(out, "\n");
	} else {
	/* Note: some rewrite failures prevent extraction. */
	if (edit_pathname(bsdtar, entry))
	continue; /* Excluded by a rewrite failure. */

	if (bsdtar->option_interactive &&
	!yes("extract '%s'", archive_entry_pathname(entry)))
	continue;

	/*
	* Format here is from SUSv2, including the
	* deferred '\n'.
	*/
	if (bsdtar->verbose) {
	safe_fprintf(stderr, "x %s",
	archive_entry_pathname(entry));
	fflush(stderr);
	}

	/* Tell the SIGINFO-handler code what we're doing. */
	siginfo_setinfo(bsdtar, "extracting",
	archive_entry_pathname(entry), 0);
	siginfo_printinfo(bsdtar, 0);

	if (bsdtar->option_stdout)
	r = archive_read_data_into_fd(a, 1);
	else
	r = archive_read_extract(a, entry,
	bsdtar->extract_flags);
	if (r != ARCHIVE_OK) {
	if (!bsdtar->verbose)
	safe_fprintf(stderr, "%s",
	archive_entry_pathname(entry));
	safe_fprintf(stderr, ": %s",
	archive_error_string(a));
	if (!bsdtar->verbose)
	fprintf(stderr, "\n");
	bsdtar->return_value = 1;
	}
	if (bsdtar->verbose)
	fprintf(stderr, "\n");
	if (r == ARCHIVE_FATAL)
	break;
	}
	}


	r = archive_read_close(a);
	if (r != ARCHIVE_OK)
	bsdtar_warnc(bsdtar, 0, "%s", archive_error_string(a));
	if (r <= ARCHIVE_WARN)
	bsdtar->return_value = 1;

	if (bsdtar->verbose > 2)
	fprintf(stdout, "Archive Format: %s, Compression: %s\n",
	archive_format_name(a), archive_compression_name(a));

	archive_read_finish(a);
	}


	/*
	* Display information about the current file.
	*
	* The format here roughly duplicates the output of 'ls -l'.
	* This is based on SUSv2, where 'tar tv' is documented as
	* listing additional information in an "unspecified format,"
	* and 'pax -l' is documented as using the same format as 'ls -l'.
	*/
	static void
	list_item_verbose(struct bsdtar bsdtar, FILE out, struct archive_entry *entry)
	{
	const struct stat *st;
	char tmp[100];
	size_t w;
	const char *p;
	const char *fmt;
	time_t tim;
	static time_t now;

	st = archive_entry_stat(entry);

	/*
	* We avoid collecting the entire list in memory at once by
	* listing things as we see them. However, that also means we can't
	* just pre-compute the field widths. Instead, we start with guesses
	* and just widen them as necessary. These numbers are completely
	* arbitrary.
	*/
	if (!bsdtar->u_width) {
	bsdtar->u_width = 6;
	bsdtar->gs_width = 13;
	}
	if (!now)
	time(&now);
	fprintf(out, "%s %d ",
	archive_entry_strmode(entry),
	(int)(st->st_nlink));

	/* Use uname if it's present, else uid. */
	p = archive_entry_uname(entry);
	if ((p == NULL) \|\| (*p == '\0')) {
	sprintf(tmp, "%lu ", (unsigned long)st->st_uid);
	p = tmp;
	}
	w = strlen(p);
	if (w > bsdtar->u_width)
	bsdtar->u_width = w;
	fprintf(out, "%-*s ", (int)bsdtar->u_width, p);

	/* Use gname if it's present, else gid. */
	p = archive_entry_gname(entry);
	if (p != NULL && p[0] != '\0') {
	fprintf(out, "%s", p);
	w = strlen(p);
	} else {
	sprintf(tmp, "%lu", (unsigned long)st->st_gid);
	w = strlen(tmp);
	fprintf(out, "%s", tmp);
	}

	/*
	* Print device number or file size, right-aligned so as to make
	* total width of group and devnum/filesize fields be gs_width.
	* If gs_width is too small, grow it.
	*/
	if (S_ISCHR(st->st_mode) \|\| S_ISBLK(st->st_mode)) {
	sprintf(tmp, "%lu,%lu",
	(unsigned long)major(st->st_rdev),
	(unsigned long)minor(st->st_rdev)); /* ls(1) also casts here. */
	} else {
	/*
	* Note the use of platform-dependent macros to format
	* the filesize here. We need the format string and the
	* corresponding type for the cast.
	*/
	sprintf(tmp, BSDTAR_FILESIZE_PRINTF,
	(BSDTAR_FILESIZE_TYPE)st->st_size);
	}
	if (w + strlen(tmp) >= bsdtar->gs_width)
	bsdtar->gs_width = w+strlen(tmp)+1;
	fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp);

	/* Format the time using 'ls -l' conventions. */
	tim = (time_t)st->st_mtime;
	#if defined(_WIN32) && !defined(__CYGWIN__)
	/* Windows' strftime function does not support %e format. */
	if (abs(tim - now) > (365/2)*86400)
	fmt = bsdtar->day_first ? "%d %b %Y" : "%b %d %Y";
	else
	fmt = bsdtar->day_first ? "%d %b %H:%M" : "%b %d %H:%M";
	#else
	if (abs(tim - now) > (365/2)*86400)
	fmt = bsdtar->day_first ? "%e %b %Y" : "%b %e %Y";
	else
	fmt = bsdtar->day_first ? "%e %b %H:%M" : "%b %e %H:%M";
	#endif
	strftime(tmp, sizeof(tmp), fmt, localtime(&tim));
	fprintf(out, " %s ", tmp);
	safe_fprintf(out, "%s", archive_entry_pathname(entry));

	/* Extra information for links. */
	if (archive_entry_hardlink(entry)) /* Hard link */
	safe_fprintf(out, " link to %s",
	archive_entry_hardlink(entry));
	else if (S_ISLNK(st->st_mode)) /* Symbolic link */
	safe_fprintf(out, " -> %s", archive_entry_symlink(entry));
	}