013be331bc
* "compression_program" support uses an external program
* Portability: no longer uses "struct stat" as a primary
data interchange structure internally
* Part of the above: refactor archive_entry to separate
out copy_stat() and stat() functions
* More complete tests for archive_entry
* Finish archive_entry_clone()
* Isolate major()/minor()/makedev() in archive_entry; remove
these from everywhere else.
* Bug fix: properly handle decompression look-ahead at end-of-data
* Bug fixes to 'ar' support
* Fix memory leak in ZIP reader
* Portability: better timegm() emulation in iso9660 reader
* New write_disk flags to suppress auto dir creation and not
overwrite newer files (for future cpio front-end)
* Simplify trailing-'/' fixup when writing tar and pax
* Test enhancements: fix various compiler warnings, improve
portability, add lots of new tests.
* Documentation: document new functions, first draft of
libarchive_internals.3
MFC after: 14 days
Thanks to: Joerg Sonnenberger (compression_program)
Thanks to: Kai Wang (ar)
Thanks to: Colin Percival (many small fixes)
Thanks to: Many others who sent me various patches and problem reports.
101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD$");
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#include "archive_entry.h"
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#include "archive_entry_private.h"
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const struct stat *
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archive_entry_stat(struct archive_entry *entry)
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{
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struct stat *st;
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if (entry->stat == NULL) {
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entry->stat = malloc(sizeof(*st));
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if (entry->stat == NULL)
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return (NULL);
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entry->stat_valid = 0;
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}
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/*
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* If none of the underlying fields have been changed, we
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* don't need to regenerate. In theory, we could use a bitmap
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* here to flag only those items that have changed, but the
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* extra complexity probably isn't worth it. It will be very
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* rare for anyone to change just one field then request a new
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* stat structure.
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*/
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if (entry->stat_valid)
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return (entry->stat);
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st = entry->stat;
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/*
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* Use the public interfaces to extract items, so that
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* the appropriate conversions get invoked.
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*/
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st->st_atime = archive_entry_atime(entry);
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st->st_ctime = archive_entry_ctime(entry);
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st->st_mtime = archive_entry_mtime(entry);
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st->st_dev = archive_entry_dev(entry);
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st->st_gid = archive_entry_gid(entry);
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st->st_uid = archive_entry_uid(entry);
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st->st_ino = archive_entry_ino(entry);
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st->st_nlink = archive_entry_nlink(entry);
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st->st_rdev = archive_entry_rdev(entry);
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st->st_size = archive_entry_size(entry);
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st->st_mode = archive_entry_mode(entry);
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/*
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* On systems that support high-res timestamps, copy that
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* information into struct stat.
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*/
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#if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC
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st->st_atimespec.tv_nsec = archive_entry_atime_nsec(entry);
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st->st_ctimespec.tv_nsec = archive_entry_ctime_nsec(entry);
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st->st_mtimespec.tv_nsec = archive_entry_mtime_nsec(entry);
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#elif HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
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st->st_atim.tv_nsec = archive_entry_atime_nsec(entry);
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st->st_ctim.tv_nsec = archive_entry_ctime_nsec(entry);
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st->st_mtim.tv_nsec = archive_entry_mtime_nsec(entry);
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#endif
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/*
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* TODO: On Linux, store 32 or 64 here depending on whether
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* the cached stat structure is a stat32 or a stat64. This
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* will allow us to support both variants interchangably.
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*/
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entry->stat_valid = 1;
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return (st);
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}
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