118 lines
4.4 KiB
C
118 lines
4.4 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: head/lib/libarchive/archive_entry_stat.c 201100 2009-12-28 03:05:31Z kientzle $");
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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 = calloc(1, 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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#if HAVE_STRUCT_STAT_ST_BIRTHTIME
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st->st_birthtime = archive_entry_birthtime(entry);
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#endif
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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 = (gid_t)archive_entry_gid(entry);
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st->st_uid = (uid_t)archive_entry_uid(entry);
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st->st_ino = (ino_t)archive_entry_ino64(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 = (off_t)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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#elif HAVE_STRUCT_STAT_ST_MTIME_N
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st->st_atime_n = archive_entry_atime_nsec(entry);
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st->st_ctime_n = archive_entry_ctime_nsec(entry);
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st->st_mtime_n = archive_entry_mtime_nsec(entry);
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#elif HAVE_STRUCT_STAT_ST_UMTIME
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st->st_uatime = archive_entry_atime_nsec(entry) / 1000;
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st->st_uctime = archive_entry_ctime_nsec(entry) / 1000;
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st->st_umtime = archive_entry_mtime_nsec(entry) / 1000;
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#elif HAVE_STRUCT_STAT_ST_MTIME_USEC
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st->st_atime_usec = archive_entry_atime_nsec(entry) / 1000;
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st->st_ctime_usec = archive_entry_ctime_nsec(entry) / 1000;
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st->st_mtime_usec = archive_entry_mtime_nsec(entry) / 1000;
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#endif
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#if HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
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st->st_birthtimespec.tv_nsec = archive_entry_birthtime_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 interchangeably.
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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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