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fuchsia / third_party / libarchive / 43a42eeffb032c218e146f0dbae385c98d1054d1 / . / libarchive / archive_read_disk_entry_from_file.c
blob: b2f1d17d9718fbf4e672ed2652df7968181b519f [file] [log] [blame]
/*-
* Copyright (c) 2003-2009 Tim Kientzle
* Copyright (c) 2010-2012 Michihiro NAKAJIMA
* Copyright (c) 2016 Martin Matuska
* 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 "archive_platform.h"
__FBSDID("$FreeBSD: head/lib/libarchive/archive_read_disk_entry_from_file.c 201084 2009-12-28 02:14:09Z kientzle $");
/* This is the tree-walking code for POSIX systems. */
#if !defined(_WIN32) || defined(__CYGWIN__)
#ifdef HAVE_SYS_TYPES_H
/* Mac OSX requires sys/types.h before sys/acl.h. */
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_ACL_H
#include <sys/acl.h>
#endif
#ifdef HAVE_DARWIN_ACL
#include <membership.h>
#include <grp.h>
#include <pwd.h>
#endif
#ifdef HAVE_SYS_EXTATTR_H
#include <sys/extattr.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if defined(HAVE_SYS_XATTR_H)
#include <sys/xattr.h>
#elif defined(HAVE_ATTR_XATTR_H)
#include <attr/xattr.h>
#endif
#ifdef HAVE_SYS_EA_H
#include <sys/ea.h>
#endif
#ifdef HAVE_ACL_LIBACL_H
#include <acl/libacl.h>
#endif
#ifdef HAVE_COPYFILE_H
#include <copyfile.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_LINUX_TYPES_H
#include <linux/types.h>
#endif
#ifdef HAVE_LINUX_FIEMAP_H
#include <linux/fiemap.h>
#endif
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h>
#endif
/*
* Some Linux distributions have both linux/ext2_fs.h and ext2fs/ext2_fs.h.
* As the include guards don't agree, the order of include is important.
*/
#ifdef HAVE_LINUX_EXT2_FS_H
#include <linux/ext2_fs.h> /* for Linux file flags */
#endif
#if defined(HAVE_EXT2FS_EXT2_FS_H) && !defined(__CYGWIN__)
#include <ext2fs/ext2_fs.h> /* Linux file flags, broken on Cygwin */
#endif
#ifdef HAVE_PATHS_H
#include <paths.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "archive.h"
#include "archive_entry.h"
#include "archive_private.h"
#include "archive_read_disk_private.h"
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
/*
* Linux and FreeBSD plug this obvious hole in POSIX.1e in
* different ways.
*/
#if HAVE_ACL_GET_PERM
#define ACL_GET_PERM acl_get_perm
#elif HAVE_ACL_GET_PERM_NP
#define ACL_GET_PERM acl_get_perm_np
#endif
/* NFSv4 platform ACL type */
#if HAVE_SUN_ACL
#define ARCHIVE_PLATFORM_ACL_TYPE_NFS4 ACE_T
#elif HAVE_DARWIN_ACL
#define ARCHIVE_PLATFORM_ACL_TYPE_NFS4 ACL_TYPE_EXTENDED
#elif HAVE_ACL_TYPE_NFS4
#define ARCHIVE_PLATFORM_ACL_TYPE_NFS4 ACL_TYPE_NFS4
#endif
static int setup_acls(struct archive_read_disk *,
struct archive_entry *, int *fd);
static int setup_mac_metadata(struct archive_read_disk *,
struct archive_entry *, int *fd);
static int setup_xattrs(struct archive_read_disk *,
struct archive_entry *, int *fd);
static int setup_sparse(struct archive_read_disk *,
struct archive_entry *, int *fd);
#if defined(HAVE_LINUX_FIEMAP_H)
static int setup_sparse_fiemap(struct archive_read_disk *,
struct archive_entry *, int *fd);
#endif
int
archive_read_disk_entry_from_file(struct archive *_a,
struct archive_entry *entry,
int fd,
const struct stat *st)
{
struct archive_read_disk *a = (struct archive_read_disk *)_a;
const char *path, *name;
struct stat s;
int initial_fd = fd;
int r, r1;
archive_clear_error(_a);
path = archive_entry_sourcepath(entry);
if (path == NULL)
path = archive_entry_pathname(entry);
if (a->tree == NULL) {
if (st == NULL) {
#if HAVE_FSTAT
if (fd >= 0) {
if (fstat(fd, &s) != 0) {
archive_set_error(&a->archive, errno,
"Can't fstat");
return (ARCHIVE_FAILED);
}
} else
#endif
#if HAVE_LSTAT
if (!a->follow_symlinks) {
if (lstat(path, &s) != 0) {
archive_set_error(&a->archive, errno,
"Can't lstat %s", path);
return (ARCHIVE_FAILED);
}
} else
#endif
if (stat(path, &s) != 0) {
archive_set_error(&a->archive, errno,
"Can't stat %s", path);
return (ARCHIVE_FAILED);
}
st = &s;
}
archive_entry_copy_stat(entry, st);
}
/* Lookup uname/gname */
name = archive_read_disk_uname(_a, archive_entry_uid(entry));
if (name != NULL)
archive_entry_copy_uname(entry, name);
name = archive_read_disk_gname(_a, archive_entry_gid(entry));
if (name != NULL)
archive_entry_copy_gname(entry, name);
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
/* On FreeBSD, we get flags for free with the stat. */
/* TODO: Does this belong in copy_stat()? */
if ((a->flags & ARCHIVE_READDISK_NO_FFLAGS) == 0 && st->st_flags != 0)
archive_entry_set_fflags(entry, st->st_flags, 0);
#endif
#if (defined(FS_IOC_GETFLAGS) && defined(HAVE_WORKING_FS_IOC_GETFLAGS)) || \
(defined(EXT2_IOC_GETFLAGS) && defined(HAVE_WORKING_EXT2_IOC_GETFLAGS))
/* Linux requires an extra ioctl to pull the flags. Although
* this is an extra step, it has a nice side-effect: We get an
* open file descriptor which we can use in the subsequent lookups. */
if ((a->flags & ARCHIVE_READDISK_NO_FFLAGS) == 0 &&
(S_ISREG(st->st_mode) || S_ISDIR(st->st_mode))) {
if (fd < 0) {
if (a->tree != NULL)
fd = a->open_on_current_dir(a->tree, path,
O_RDONLY | O_NONBLOCK | O_CLOEXEC);
else
fd = open(path, O_RDONLY | O_NONBLOCK |
O_CLOEXEC);
__archive_ensure_cloexec_flag(fd);
}
if (fd >= 0) {
int stflags;
r = ioctl(fd,
#if defined(FS_IOC_GETFLAGS)
FS_IOC_GETFLAGS,
#else
EXT2_IOC_GETFLAGS,
#endif
&stflags);
if (r == 0 && stflags != 0)
archive_entry_set_fflags(entry, stflags, 0);
}
}
#endif
#if defined(HAVE_READLINK) || defined(HAVE_READLINKAT)
if (S_ISLNK(st->st_mode)) {
size_t linkbuffer_len = st->st_size + 1;
char *linkbuffer;
int lnklen;
linkbuffer = malloc(linkbuffer_len);
if (linkbuffer == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Couldn't read link data");
return (ARCHIVE_FAILED);
}
if (a->tree != NULL) {
#ifdef HAVE_READLINKAT
lnklen = readlinkat(a->tree_current_dir_fd(a->tree),
path, linkbuffer, linkbuffer_len);
#else
if (a->tree_enter_working_dir(a->tree) != 0) {
archive_set_error(&a->archive, errno,
"Couldn't read link data");
free(linkbuffer);
return (ARCHIVE_FAILED);
}
lnklen = readlink(path, linkbuffer, linkbuffer_len);
#endif /* HAVE_READLINKAT */
} else
lnklen = readlink(path, linkbuffer, linkbuffer_len);
if (lnklen < 0) {
archive_set_error(&a->archive, errno,
"Couldn't read link data");
free(linkbuffer);
return (ARCHIVE_FAILED);
}
linkbuffer[lnklen] = 0;
archive_entry_set_symlink(entry, linkbuffer);
free(linkbuffer);
}
#endif /* HAVE_READLINK || HAVE_READLINKAT */
r = 0;
if ((a->flags & ARCHIVE_READDISK_NO_ACL) == 0)
r = setup_acls(a, entry, &fd);
if ((a->flags & ARCHIVE_READDISK_NO_XATTR) == 0) {
r1 = setup_xattrs(a, entry, &fd);
if (r1 < r)
r = r1;
}
if (a->flags & ARCHIVE_READDISK_MAC_COPYFILE) {
r1 = setup_mac_metadata(a, entry, &fd);
if (r1 < r)
r = r1;
}
r1 = setup_sparse(a, entry, &fd);
if (r1 < r)
r = r1;
/* If we opened the file earlier in this function, close it. */
if (initial_fd != fd)
close(fd);
return (r);
}
#if defined(__APPLE__) && defined(HAVE_COPYFILE_H)
/*
* The Mac OS "copyfile()" API copies the extended metadata for a
* file into a separate file in AppleDouble format (see RFC 1740).
*
* Mac OS tar and cpio implementations store this extended
* metadata as a separate entry just before the regular entry
* with a "._" prefix added to the filename.
*
* Note that this is currently done unconditionally; the tar program has
* an option to discard this information before the archive is written.
*
* TODO: If there's a failure, report it and return ARCHIVE_WARN.
*/
static int
setup_mac_metadata(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
int tempfd = -1;
int copyfile_flags = COPYFILE_NOFOLLOW | COPYFILE_ACL | COPYFILE_XATTR;
struct stat copyfile_stat;
int ret = ARCHIVE_OK;
void *buff = NULL;
int have_attrs;
const char *name, *tempdir;
struct archive_string tempfile;
(void)fd; /* UNUSED */
name = archive_entry_sourcepath(entry);
if (name == NULL)
name = archive_entry_pathname(entry);
else if (a->tree != NULL && a->tree_enter_working_dir(a->tree) != 0) {
archive_set_error(&a->archive, errno,
"Can't change dir to read extended attributes");
return (ARCHIVE_FAILED);
}
if (name == NULL) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Can't open file to read extended attributes: No name");
return (ARCHIVE_WARN);
}
/* Short-circuit if there's nothing to do. */
have_attrs = copyfile(name, NULL, 0, copyfile_flags | COPYFILE_CHECK);
if (have_attrs == -1) {
archive_set_error(&a->archive, errno,
"Could not check extended attributes");
return (ARCHIVE_WARN);
}
if (have_attrs == 0)
return (ARCHIVE_OK);
tempdir = NULL;
if (issetugid() == 0)
tempdir = getenv("TMPDIR");
if (tempdir == NULL)
tempdir = _PATH_TMP;
archive_string_init(&tempfile);
archive_strcpy(&tempfile, tempdir);
archive_strcat(&tempfile, "tar.md.XXXXXX");
tempfd = mkstemp(tempfile.s);
if (tempfd < 0) {
archive_set_error(&a->archive, errno,
"Could not open extended attribute file");
ret = ARCHIVE_WARN;
goto cleanup;
}
__archive_ensure_cloexec_flag(tempfd);
/* XXX I wish copyfile() could pack directly to a memory
* buffer; that would avoid the temp file here. For that
* matter, it would be nice if fcopyfile() actually worked,
* that would reduce the many open/close races here. */
if (copyfile(name, tempfile.s, 0, copyfile_flags | COPYFILE_PACK)) {
archive_set_error(&a->archive, errno,
"Could not pack extended attributes");
ret = ARCHIVE_WARN;
goto cleanup;
}
if (fstat(tempfd, &copyfile_stat)) {
archive_set_error(&a->archive, errno,
"Could not check size of extended attributes");
ret = ARCHIVE_WARN;
goto cleanup;
}
buff = malloc(copyfile_stat.st_size);
if (buff == NULL) {
archive_set_error(&a->archive, errno,
"Could not allocate memory for extended attributes");
ret = ARCHIVE_WARN;
goto cleanup;
}
if (copyfile_stat.st_size != read(tempfd, buff, copyfile_stat.st_size)) {
archive_set_error(&a->archive, errno,
"Could not read extended attributes into memory");
ret = ARCHIVE_WARN;
goto cleanup;
}
archive_entry_copy_mac_metadata(entry, buff, copyfile_stat.st_size);
cleanup:
if (tempfd >= 0) {
close(tempfd);
unlink(tempfile.s);
}
archive_string_free(&tempfile);
free(buff);
return (ret);
}
#else
/*
* Stub implementation for non-Mac systems.
*/
static int
setup_mac_metadata(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
(void)a; /* UNUSED */
(void)entry; /* UNUSED */
(void)fd; /* UNUSED */
return (ARCHIVE_OK);
}
#endif
#if HAVE_DARWIN_ACL
static int translate_guid(struct archive *, acl_entry_t,
int *, int *, const char **);
static void add_trivial_nfs4_acl(struct archive_entry *);
#endif
#if HAVE_SUN_ACL
static int
sun_acl_is_trivial(acl_t *, mode_t, int *trivialp);
#endif
#if HAVE_POSIX_ACL || HAVE_NFS4_ACL
static int translate_acl(struct archive_read_disk *a,
struct archive_entry *entry,
#if HAVE_SUN_ACL
acl_t *acl,
#else
acl_t acl,
#endif
int archive_entry_acl_type);
static int
setup_acls(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
const char *accpath;
#if HAVE_SUN_ACL
acl_t *acl;
#else
acl_t acl;
#endif
int r;
accpath = NULL;
#if HAVE_SUN_ACL || HAVE_DARWIN_ACL || HAVE_ACL_GET_FD_NP
if (*fd < 0)
#else
/* For default ACLs on Linux we need reachable accpath */
if (*fd < 0 || S_ISDIR(archive_entry_mode(entry)))
#endif
{
accpath = archive_entry_sourcepath(entry);
if (accpath == NULL || (a->tree != NULL &&
a->tree_enter_working_dir(a->tree) != 0))
accpath = archive_entry_pathname(entry);
if (accpath == NULL) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Couldn't determine file path to read ACLs");
return (ARCHIVE_WARN);
}
if (a->tree != NULL &&
#if !HAVE_SUN_ACL && !HAVE_DARWIN_ACL && !HAVE_ACL_GET_FD_NP
*fd < 0 &&
#endif
(a->follow_symlinks ||
archive_entry_filetype(entry) != AE_IFLNK)) {
*fd = a->open_on_current_dir(a->tree,
accpath, O_RDONLY | O_NONBLOCK);
}
}
archive_entry_acl_clear(entry);
acl = NULL;
#if HAVE_NFS4_ACL
/* Try NFSv4 ACL first. */
if (*fd >= 0)
#if HAVE_SUN_ACL
/* Solaris reads both POSIX.1e and NFSv4 ACL here */
facl_get(*fd, 0, &acl);
#elif HAVE_ACL_GET_FD_NP
acl = acl_get_fd_np(*fd, ARCHIVE_PLATFORM_ACL_TYPE_NFS4);
#else
acl = acl_get_fd(*fd);
#endif
#if HAVE_ACL_GET_LINK_NP
else if (!a->follow_symlinks)
acl = acl_get_link_np(accpath, ARCHIVE_PLATFORM_ACL_TYPE_NFS4);
#else
else if ((!a->follow_symlinks)
&& (archive_entry_filetype(entry) == AE_IFLNK))
/* We can't get the ACL of a symlink, so we assume it can't
have one. */
acl = NULL;
#endif
else
#if HAVE_SUN_ACL
/* Solaris reads both POSIX.1e and NFSv4 ACLs here */
acl_get(accpath, 0, &acl);
#else
acl = acl_get_file(accpath, ARCHIVE_PLATFORM_ACL_TYPE_NFS4);
#endif
#if HAVE_ACL_IS_TRIVIAL_NP || HAVE_SUN_ACL
/* Ignore "trivial" ACLs that just mirror the file mode. */
if (acl != NULL) {
#if HAVE_SUN_ACL
if (sun_acl_is_trivial(acl, archive_entry_mode(entry),
&r) == 0 && r == 1)
#elif HAVE_ACL_IS_TRIVIAL_NP
if (acl_is_trivial_np(acl, &r) == 0 && r == 1)
#endif
{
acl_free(acl);
acl = NULL;
/*
* Simultaneous NFSv4 and POSIX.1e ACLs for the same
* entry are not allowed, so we should return here
*/
return (ARCHIVE_OK);
}
}
#endif /* HAVE_ACL_IS_TRIVIAL_NP || HAVE_SUN_ACL */
if (acl != NULL) {
r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_NFS4);
acl_free(acl);
if (r != ARCHIVE_OK) {
archive_set_error(&a->archive, errno,
"Couldn't translate "
#if !HAVE_SUN_ACL
"NFSv4 "
#endif
"ACLs");
}
#if HAVE_DARWIN_ACL
/*
* Because Mac OS doesn't support owner@, group@ and everyone@
* ACLs we need to add NFSv4 ACLs mirroring the file mode to
* the archive entry. Otherwise extraction on non-Mac platforms
* would lead to an invalid file mode.
*/
if ((archive_entry_acl_types(entry) &
ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0)
add_trivial_nfs4_acl(entry);
#endif
return (r);
}
#endif /* HAVE_NFS4_ACL */
#if HAVE_POSIX_ACL
/* This code path is skipped on MacOS and Solaris */
/* Retrieve access ACL from file. */
if (*fd >= 0)
acl = acl_get_fd(*fd);
#if HAVE_ACL_GET_LINK_NP
else if (!a->follow_symlinks)
acl = acl_get_link_np(accpath, ACL_TYPE_ACCESS);
#else
else if ((!a->follow_symlinks)
&& (archive_entry_filetype(entry) == AE_IFLNK))
/* We can't get the ACL of a symlink, so we assume it can't
have one. */
acl = NULL;
#endif
else
acl = acl_get_file(accpath, ACL_TYPE_ACCESS);
#if HAVE_ACL_IS_TRIVIAL_NP
/* Ignore "trivial" ACLs that just mirror the file mode. */
if (acl != NULL && acl_is_trivial_np(acl, &r) == 0) {
if (r) {
acl_free(acl);
acl = NULL;
}
}
#endif
if (acl != NULL) {
r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_ACCESS);
acl_free(acl);
acl = NULL;
if (r != ARCHIVE_OK) {
archive_set_error(&a->archive, errno,
"Couldn't translate access ACLs");
return (r);
}
}
/* Only directories can have default ACLs. */
if (S_ISDIR(archive_entry_mode(entry))) {
#if HAVE_ACL_GET_FD_NP
if (*fd >= 0)
acl = acl_get_fd_np(*fd, ACL_TYPE_DEFAULT);
else
#endif
acl = acl_get_file(accpath, ACL_TYPE_DEFAULT);
if (acl != NULL) {
r = translate_acl(a, entry, acl,
ARCHIVE_ENTRY_ACL_TYPE_DEFAULT);
acl_free(acl);
if (r != ARCHIVE_OK) {
archive_set_error(&a->archive, errno,
"Couldn't translate default ACLs");
return (r);
}
}
}
#endif /* HAVE_POSIX_ACL */
return (ARCHIVE_OK);
}
/*
* Translate system ACL permissions into libarchive internal structure
*/
static const struct {
const int archive_perm;
const int platform_perm;
} acl_perm_map[] = {
#if HAVE_SUN_ACL /* Solaris NFSv4 ACL permissions */
{ARCHIVE_ENTRY_ACL_EXECUTE, ACE_EXECUTE},
{ARCHIVE_ENTRY_ACL_READ_DATA, ACE_READ_DATA},
{ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACE_LIST_DIRECTORY},
{ARCHIVE_ENTRY_ACL_WRITE_DATA, ACE_WRITE_DATA},
{ARCHIVE_ENTRY_ACL_ADD_FILE, ACE_ADD_FILE},
{ARCHIVE_ENTRY_ACL_APPEND_DATA, ACE_APPEND_DATA},
{ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACE_ADD_SUBDIRECTORY},
{ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACE_READ_NAMED_ATTRS},
{ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACE_WRITE_NAMED_ATTRS},
{ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACE_DELETE_CHILD},
{ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACE_READ_ATTRIBUTES},
{ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACE_WRITE_ATTRIBUTES},
{ARCHIVE_ENTRY_ACL_DELETE, ACE_DELETE},
{ARCHIVE_ENTRY_ACL_READ_ACL, ACE_READ_ACL},
{ARCHIVE_ENTRY_ACL_WRITE_ACL, ACE_WRITE_ACL},
{ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACE_WRITE_OWNER},
{ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACE_SYNCHRONIZE}
#elif HAVE_DARWIN_ACL /* MacOS ACL permissions */
{ARCHIVE_ENTRY_ACL_READ_DATA, ACL_READ_DATA},
{ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACL_LIST_DIRECTORY},
{ARCHIVE_ENTRY_ACL_WRITE_DATA, ACL_WRITE_DATA},
{ARCHIVE_ENTRY_ACL_ADD_FILE, ACL_ADD_FILE},
{ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},
{ARCHIVE_ENTRY_ACL_DELETE, ACL_DELETE},
{ARCHIVE_ENTRY_ACL_APPEND_DATA, ACL_APPEND_DATA},
{ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACL_ADD_SUBDIRECTORY},
{ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACL_DELETE_CHILD},
{ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACL_READ_ATTRIBUTES},
{ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACL_WRITE_ATTRIBUTES},
{ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACL_READ_EXTATTRIBUTES},
{ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACL_WRITE_EXTATTRIBUTES},
{ARCHIVE_ENTRY_ACL_READ_ACL, ACL_READ_SECURITY},
{ARCHIVE_ENTRY_ACL_WRITE_ACL, ACL_WRITE_SECURITY},
{ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACL_CHANGE_OWNER},
{ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACL_SYNCHRONIZE}
#else /* POSIX.1e ACL permissions */
{ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},
{ARCHIVE_ENTRY_ACL_WRITE, ACL_WRITE},
{ARCHIVE_ENTRY_ACL_READ, ACL_READ},
#if HAVE_ACL_TYPE_NFS4 /* FreeBSD NFSv4 ACL permissions */
{ARCHIVE_ENTRY_ACL_READ_DATA, ACL_READ_DATA},
{ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACL_LIST_DIRECTORY},
{ARCHIVE_ENTRY_ACL_WRITE_DATA, ACL_WRITE_DATA},
{ARCHIVE_ENTRY_ACL_ADD_FILE, ACL_ADD_FILE},
{ARCHIVE_ENTRY_ACL_APPEND_DATA, ACL_APPEND_DATA},
{ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACL_ADD_SUBDIRECTORY},
{ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACL_READ_NAMED_ATTRS},
{ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACL_WRITE_NAMED_ATTRS},
{ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACL_DELETE_CHILD},
{ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACL_READ_ATTRIBUTES},
{ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACL_WRITE_ATTRIBUTES},
{ARCHIVE_ENTRY_ACL_DELETE, ACL_DELETE},
{ARCHIVE_ENTRY_ACL_READ_ACL, ACL_READ_ACL},
{ARCHIVE_ENTRY_ACL_WRITE_ACL, ACL_WRITE_ACL},
{ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACL_WRITE_OWNER},
{ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACL_SYNCHRONIZE}
#endif
#endif /* !HAVE_SUN_ACL && !HAVE_DARWIN_ACL */
};
#if HAVE_NFS4_ACL
/*
* Translate system NFSv4 inheritance flags into libarchive internal structure
*/
static const struct {
const int archive_inherit;
const int platform_inherit;
} acl_inherit_map[] = {
#if HAVE_SUN_ACL /* Solaris ACL inheritance flags */
{ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACE_FILE_INHERIT_ACE},
{ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACE_DIRECTORY_INHERIT_ACE},
{ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACE_NO_PROPAGATE_INHERIT_ACE},
{ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACE_INHERIT_ONLY_ACE},
{ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS, ACE_SUCCESSFUL_ACCESS_ACE_FLAG},
{ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS, ACE_FAILED_ACCESS_ACE_FLAG},
{ARCHIVE_ENTRY_ACL_ENTRY_INHERITED, ACE_INHERITED_ACE}
#elif HAVE_DARWIN_ACL /* MacOS NFSv4 inheritance flags */
{ARCHIVE_ENTRY_ACL_ENTRY_INHERITED, ACL_ENTRY_INHERITED},
{ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACL_ENTRY_FILE_INHERIT},
{ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACL_ENTRY_DIRECTORY_INHERIT},
{ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACL_ENTRY_LIMIT_INHERIT},
{ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACL_ENTRY_ONLY_INHERIT}
#else /* FreeBSD NFSv4 ACL inheritance flags */
{ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACL_ENTRY_FILE_INHERIT},
{ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACL_ENTRY_DIRECTORY_INHERIT},
{ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACL_ENTRY_NO_PROPAGATE_INHERIT},
{ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACL_ENTRY_INHERIT_ONLY},
{ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS, ACL_ENTRY_SUCCESSFUL_ACCESS},
{ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS, ACL_ENTRY_FAILED_ACCESS},
{ARCHIVE_ENTRY_ACL_ENTRY_INHERITED, ACL_ENTRY_INHERITED}
#endif /* !HAVE_SUN_ACL && !HAVE_DARWIN_ACL */
};
#endif /* HAVE_NFS4_ACL */
#if HAVE_DARWIN_ACL
static int translate_guid(struct archive *a, acl_entry_t acl_entry,
int *ae_id, int *ae_tag, const char **ae_name)
{
void *q;
uid_t ugid;
int r, idtype;
struct passwd *pwd;
struct group *grp;
q = acl_get_qualifier(acl_entry);
if (q == NULL)
return (1);
r = mbr_uuid_to_id((const unsigned char *)q, &ugid, &idtype);
if (r != 0) {
acl_free(q);
return (1);
}
if (idtype == ID_TYPE_UID) {
*ae_tag = ARCHIVE_ENTRY_ACL_USER;
pwd = getpwuuid(q);
if (pwd == NULL) {
*ae_id = ugid;
*ae_name = NULL;
} else {
*ae_id = pwd->pw_uid;
*ae_name = archive_read_disk_uname(a, *ae_id);
}
} else if (idtype == ID_TYPE_GID) {
*ae_tag = ARCHIVE_ENTRY_ACL_GROUP;
grp = getgruuid(q);
if (grp == NULL) {
*ae_id = ugid;
*ae_name = NULL;
} else {
*ae_id = grp->gr_gid;
*ae_name = archive_read_disk_gname(a, *ae_id);
}
} else
r = 1;
acl_free(q);
return (r);
}
/*
* Add trivial NFSv4 ACL entries from mode
*/
static void
add_trivial_nfs4_acl(struct archive_entry *entry)
{
mode_t mode;
int i;
const int rperm = ARCHIVE_ENTRY_ACL_READ_DATA;
const int wperm = ARCHIVE_ENTRY_ACL_WRITE_DATA |
ARCHIVE_ENTRY_ACL_APPEND_DATA;
const int eperm = ARCHIVE_ENTRY_ACL_EXECUTE;
const int pubset = ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES |
ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS |
ARCHIVE_ENTRY_ACL_READ_ACL |
ARCHIVE_ENTRY_ACL_SYNCHRONIZE;
const int ownset = pubset | ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES |
ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS |
ARCHIVE_ENTRY_ACL_WRITE_ACL |
ARCHIVE_ENTRY_ACL_WRITE_OWNER;
struct {
const int type;
const int tag;
int permset;
} tacl_entry[] = {
{ARCHIVE_ENTRY_ACL_TYPE_ALLOW, ARCHIVE_ENTRY_ACL_USER_OBJ, 0},
{ARCHIVE_ENTRY_ACL_TYPE_DENY, ARCHIVE_ENTRY_ACL_USER_OBJ, 0},
{ARCHIVE_ENTRY_ACL_TYPE_DENY, ARCHIVE_ENTRY_ACL_GROUP_OBJ, 0},
{ARCHIVE_ENTRY_ACL_TYPE_ALLOW, ARCHIVE_ENTRY_ACL_USER_OBJ, ownset},
{ARCHIVE_ENTRY_ACL_TYPE_ALLOW, ARCHIVE_ENTRY_ACL_GROUP_OBJ, pubset},
{ARCHIVE_ENTRY_ACL_TYPE_ALLOW, ARCHIVE_ENTRY_ACL_EVERYONE, pubset}
};
mode = archive_entry_mode(entry);
/* Permissions for everyone@ */
if (mode & 0004)
tacl_entry[5].permset |= rperm;
if (mode & 0002)
tacl_entry[5].permset |= wperm;
if (mode & 0001)
tacl_entry[5].permset |= eperm;
/* Permissions for group@ */
if (mode & 0040)
tacl_entry[4].permset |= rperm;
else if (mode & 0004)
tacl_entry[2].permset |= rperm;
if (mode & 0020)
tacl_entry[4].permset |= wperm;
else if (mode & 0002)
tacl_entry[2].permset |= wperm;
if (mode & 0010)
tacl_entry[4].permset |= eperm;
else if (mode & 0001)
tacl_entry[2].permset |= eperm;
/* Permissions for owner@ */
if (mode & 0400) {
tacl_entry[3].permset |= rperm;
if (!(mode & 0040) && (mode & 0004))
tacl_entry[0].permset |= rperm;
} else if ((mode & 0040) || (mode & 0004))
tacl_entry[1].permset |= rperm;
if (mode & 0200) {
tacl_entry[3].permset |= wperm;
if (!(mode & 0020) && (mode & 0002))
tacl_entry[0].permset |= wperm;
} else if ((mode & 0020) || (mode & 0002))
tacl_entry[1].permset |= wperm;
if (mode & 0100) {
tacl_entry[3].permset |= eperm;
if (!(mode & 0010) && (mode & 0001))
tacl_entry[0].permset |= eperm;
} else if ((mode & 0010) || (mode & 0001))
tacl_entry[1].permset |= eperm;
for (i = 0; i < 6; i++) {
if (tacl_entry[i].permset != 0) {
archive_entry_acl_add_entry(entry,
tacl_entry[i].type, tacl_entry[i].permset,
tacl_entry[i].tag, -1, NULL);
}
}
return;
}
#elif HAVE_SUN_ACL
/*
* Check if acl is trivial
* This is a FreeBSD acl_is_trivial_np() implementation for Solaris
*/
static int
sun_acl_is_trivial(acl_t *acl, mode_t mode, int *trivialp)
{
int i, p;
const uint32_t rperm = ACE_READ_DATA;
const uint32_t wperm = ACE_WRITE_DATA | ACE_APPEND_DATA;
const uint32_t eperm = ACE_EXECUTE;
const uint32_t pubset = ACE_READ_ATTRIBUTES | ACE_READ_NAMED_ATTRS |
ACE_READ_ACL | ACE_SYNCHRONIZE;
const uint32_t ownset = pubset | ACE_WRITE_ATTRIBUTES |
ACE_WRITE_NAMED_ATTRS | ACE_WRITE_ACL | ACE_WRITE_OWNER;
ace_t *ace;
ace_t tace[6];
if (acl == NULL || trivialp == NULL)
return (-1);
*trivialp = 0;
/* ACL_IS_TRIVIAL flag must be set for both POSIX.1e and NFSv4 ACLs */
if ((acl->acl_flags & ACL_IS_TRIVIAL) == 0)
return (0);
/*
* POSIX.1e ACLs marked with ACL_IS_TRIVIAL are compatible with
* FreeBSD acl_is_trivial_np(). On Solaris they have 4 entries,
* including mask.
*/
if (acl->acl_type == ACLENT_T) {
if (acl->acl_cnt == 4)
*trivialp = 1;
return (0);
}
if (acl->acl_type != ACE_T || acl->acl_entry_size != sizeof(ace_t))
return (-1);
/*
* Continue with checking NFSv4 ACLs
*
* Create list of trivial ace's to be compared
*/
/* owner@ allow pre */
tace[0].a_flags = ACE_OWNER;
tace[0].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
tace[0].a_access_mask = 0;
/* owner@ deny */
tace[1].a_flags = ACE_OWNER;
tace[1].a_type = ACE_ACCESS_DENIED_ACE_TYPE;
tace[1].a_access_mask = 0;
/* group@ deny */
tace[2].a_flags = ACE_GROUP | ACE_IDENTIFIER_GROUP;
tace[2].a_type = ACE_ACCESS_DENIED_ACE_TYPE;
tace[2].a_access_mask = 0;
/* owner@ allow */
tace[3].a_flags = ACE_OWNER;
tace[3].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
tace[3].a_access_mask = ownset;
/* group@ allow */
tace[4].a_flags = ACE_GROUP | ACE_IDENTIFIER_GROUP;
tace[4].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
tace[4].a_access_mask = pubset;
/* everyone@ allow */
tace[5].a_flags = ACE_EVERYONE;
tace[5].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
tace[5].a_access_mask = pubset;
/* Permissions for everyone@ */
if (mode & 0004)
tace[5].a_access_mask |= rperm;
if (mode & 0002)
tace[5].a_access_mask |= wperm;
if (mode & 0001)
tace[5].a_access_mask |= eperm;
/* Permissions for group@ */
if (mode & 0040)
tace[4].a_access_mask |= rperm;
else if (mode & 0004)
tace[2].a_access_mask |= rperm;
if (mode & 0020)
tace[4].a_access_mask |= wperm;
else if (mode & 0002)
tace[2].a_access_mask |= wperm;
if (mode & 0010)
tace[4].a_access_mask |= eperm;
else if (mode & 0001)
tace[2].a_access_mask |= eperm;
/* Permissions for owner@ */
if (mode & 0400) {
tace[3].a_access_mask |= rperm;
if (!(mode & 0040) && (mode & 0004))
tace[0].a_access_mask |= rperm;
} else if ((mode & 0040) || (mode & 0004))
tace[1].a_access_mask |= rperm;
if (mode & 0200) {
tace[3].a_access_mask |= wperm;
if (!(mode & 0020) && (mode & 0002))
tace[0].a_access_mask |= wperm;
} else if ((mode & 0020) || (mode & 0002))
tace[1].a_access_mask |= wperm;
if (mode & 0100) {
tace[3].a_access_mask |= eperm;
if (!(mode & 0010) && (mode & 0001))
tace[0].a_access_mask |= eperm;
} else if ((mode & 0010) || (mode & 0001))
tace[1].a_access_mask |= eperm;
/* Check if the acl count matches */
p = 3;
for (i = 0; i < 3; i++) {
if (tace[i].a_access_mask != 0)
p++;
}
if (acl->acl_cnt != p)
return (0);
p = 0;
for (i = 0; i < 6; i++) {
if (tace[i].a_access_mask != 0) {
ace = &((ace_t *)acl->acl_aclp)[p];
/*
* Illumos added ACE_DELETE_CHILD to write perms for
* directories. We have to check against that, too.
*/
if (ace->a_flags != tace[i].a_flags ||
ace->a_type != tace[i].a_type ||
(ace->a_access_mask != tace[i].a_access_mask &&
((acl->acl_flags & ACL_IS_DIR) == 0 ||
(tace[i].a_access_mask & wperm) == 0 ||
ace->a_access_mask !=
(tace[i].a_access_mask | ACE_DELETE_CHILD))))
return (0);
p++;
}
}
*trivialp = 1;
return (0);
}
#endif /* HAVE_SUN_ACL */
#if HAVE_SUN_ACL
/*
* Translate Solaris POSIX.1e and NFSv4 ACLs into libarchive internal ACL
*/
static int
translate_acl(struct archive_read_disk *a,
struct archive_entry *entry, acl_t *acl, int default_entry_acl_type)
{
int e, i;
int ae_id, ae_tag, ae_perm;
int entry_acl_type;
const char *ae_name;
aclent_t *aclent;
ace_t *ace;
(void)default_entry_acl_type;
if (acl->acl_cnt <= 0)
return (ARCHIVE_OK);
for (e = 0; e < acl->acl_cnt; e++) {
ae_name = NULL;
ae_tag = 0;
ae_perm = 0;
if (acl->acl_type == ACE_T) {
ace = &((ace_t *)acl->acl_aclp)[e];
ae_id = ace->a_who;
switch(ace->a_type) {
case ACE_ACCESS_ALLOWED_ACE_TYPE:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALLOW;
break;
case ACE_ACCESS_DENIED_ACE_TYPE:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DENY;
break;
case ACE_SYSTEM_AUDIT_ACE_TYPE:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS;
break;
case ACE_SYSTEM_ALARM_ACE_TYPE:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALARM;
break;
default:
/* Unknown entry type, skip */
continue;
}
if ((ace->a_flags & ACE_OWNER) != 0)
ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
else if ((ace->a_flags & ACE_GROUP) != 0)
ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
else if ((ace->a_flags & ACE_EVERYONE) != 0)
ae_tag = ARCHIVE_ENTRY_ACL_EVERYONE;
else if ((ace->a_flags & ACE_IDENTIFIER_GROUP) != 0) {
ae_tag = ARCHIVE_ENTRY_ACL_GROUP;
ae_name = archive_read_disk_gname(&a->archive,
ae_id);
} else {
ae_tag = ARCHIVE_ENTRY_ACL_USER;
ae_name = archive_read_disk_uname(&a->archive,
ae_id);
}
for (i = 0; i < (int)(sizeof(acl_inherit_map) /
sizeof(acl_inherit_map[0])); ++i) {
if ((ace->a_flags &
acl_inherit_map[i].platform_inherit) != 0)
ae_perm |=
acl_inherit_map[i].archive_inherit;
}
for (i = 0; i < (int)(sizeof(acl_perm_map) /
sizeof(acl_perm_map[0])); ++i) {
if ((ace->a_access_mask &
acl_perm_map[i].platform_perm) != 0)
ae_perm |=
acl_perm_map[i].archive_perm;
}
} else {
aclent = &((aclent_t *)acl->acl_aclp)[e];
if ((aclent->a_type & ACL_DEFAULT) != 0)
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DEFAULT;
else
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS;
ae_id = aclent->a_id;
switch(aclent->a_type) {
case DEF_USER:
case USER:
ae_name = archive_read_disk_uname(&a->archive,
ae_id);
ae_tag = ARCHIVE_ENTRY_ACL_USER;
break;
case DEF_GROUP:
case GROUP:
ae_name = archive_read_disk_gname(&a->archive,
ae_id);
ae_tag = ARCHIVE_ENTRY_ACL_GROUP;
break;
case DEF_CLASS_OBJ:
case CLASS_OBJ:
ae_tag = ARCHIVE_ENTRY_ACL_MASK;
break;
case DEF_USER_OBJ:
case USER_OBJ:
ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
break;
case DEF_GROUP_OBJ:
case GROUP_OBJ:
ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
break;
case DEF_OTHER_OBJ:
case OTHER_OBJ:
ae_tag = ARCHIVE_ENTRY_ACL_OTHER;
break;
default:
/* Unknown tag type, skip */
continue;
}
if ((aclent->a_perm & 1) != 0)
ae_perm |= ARCHIVE_ENTRY_ACL_EXECUTE;
if ((aclent->a_perm & 2) != 0)
ae_perm |= ARCHIVE_ENTRY_ACL_WRITE;
if ((aclent->a_perm & 4) != 0)
ae_perm |= ARCHIVE_ENTRY_ACL_READ;
} /* default_entry_acl_type != ARCHIVE_ENTRY_ACL_TYPE_NFS4 */
archive_entry_acl_add_entry(entry, entry_acl_type,
ae_perm, ae_tag, ae_id, ae_name);
}
return (ARCHIVE_OK);
}
#else /* !HAVE_SUN_ACL */
/*
* Translate POSIX.1e (Linux), FreeBSD (both POSIX.1e and NFSv4) and
* MacOS (NFSv4 only) ACLs into libarchive internal structure
*/
static int
translate_acl(struct archive_read_disk *a,
struct archive_entry *entry, acl_t acl, int default_entry_acl_type)
{
acl_tag_t acl_tag;
#if HAVE_ACL_TYPE_NFS4
acl_entry_type_t acl_type;
int brand;
#endif
#if HAVE_ACL_TYPE_NFS4 || HAVE_DARWIN_ACL
acl_flagset_t acl_flagset;
#endif
acl_entry_t acl_entry;
acl_permset_t acl_permset;
int i, entry_acl_type;
int r, s, ae_id, ae_tag, ae_perm;
#if !HAVE_DARWIN_ACL
void *q;
#endif
const char *ae_name;
#if HAVE_ACL_TYPE_NFS4
// FreeBSD "brands" ACLs as POSIX.1e or NFSv4
// Make sure the "brand" on this ACL is consistent
// with the default_entry_acl_type bits provided.
if (acl_get_brand_np(acl, &brand) != 0) {
archive_set_error(&a->archive, errno,
"Failed to read ACL brand");
return (ARCHIVE_WARN);
}
switch (brand) {
case ACL_BRAND_POSIX:
switch (default_entry_acl_type) {
case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
break;
default:
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Invalid ACL entry type for POSIX.1e ACL");
return (ARCHIVE_WARN);
}
break;
case ACL_BRAND_NFS4:
if (default_entry_acl_type & ~ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Invalid ACL entry type for NFSv4 ACL");
return (ARCHIVE_WARN);
}
break;
default:
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Unknown ACL brand");
return (ARCHIVE_WARN);
}
#endif
s = acl_get_entry(acl, ACL_FIRST_ENTRY, &acl_entry);
if (s == -1) {
archive_set_error(&a->archive, errno,
"Failed to get first ACL entry");
return (ARCHIVE_WARN);
}
#if HAVE_DARWIN_ACL
while (s == 0)
#else /* FreeBSD, Linux */
while (s == 1)
#endif
{
ae_id = -1;
ae_name = NULL;
ae_perm = 0;
if (acl_get_tag_type(acl_entry, &acl_tag) != 0) {
archive_set_error(&a->archive, errno,
"Failed to get ACL tag type");
return (ARCHIVE_WARN);
}
switch (acl_tag) {
#if !HAVE_DARWIN_ACL /* FreeBSD, Linux */
case ACL_USER:
q = acl_get_qualifier(acl_entry);
if (q != NULL) {
ae_id = (int)*(uid_t *)q;
acl_free(q);
ae_name = archive_read_disk_uname(&a->archive,
ae_id);
}
ae_tag = ARCHIVE_ENTRY_ACL_USER;
break;
case ACL_GROUP:
q = acl_get_qualifier(acl_entry);
if (q != NULL) {
ae_id = (int)*(gid_t *)q;
acl_free(q);
ae_name = archive_read_disk_gname(&a->archive,
ae_id);
}
ae_tag = ARCHIVE_ENTRY_ACL_GROUP;
break;
case ACL_MASK:
ae_tag = ARCHIVE_ENTRY_ACL_MASK;
break;
case ACL_USER_OBJ:
ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
break;
case ACL_GROUP_OBJ:
ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
break;
case ACL_OTHER:
ae_tag = ARCHIVE_ENTRY_ACL_OTHER;
break;
#if HAVE_ACL_TYPE_NFS4
case ACL_EVERYONE:
ae_tag = ARCHIVE_ENTRY_ACL_EVERYONE;
break;
#endif
#else /* HAVE_DARWIN_ACL */
case ACL_EXTENDED_ALLOW:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALLOW;
r = translate_guid(&a->archive, acl_entry, &ae_id,
&ae_tag, &ae_name);
break;
case ACL_EXTENDED_DENY:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DENY;
r = translate_guid(&a->archive, acl_entry, &ae_id,
&ae_tag, &ae_name);
break;
#endif /* HAVE_DARWIN_ACL */
default:
/* Skip types that libarchive can't support. */
s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);
continue;
}
#if HAVE_DARWIN_ACL
/* Skip if translate_guid() above failed */
if (r != 0) {
s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);
continue;
}
#endif
#if !HAVE_DARWIN_ACL
// XXX acl_type maps to allow/deny/audit/YYYY bits
entry_acl_type = default_entry_acl_type;
#endif
#if HAVE_ACL_TYPE_NFS4 || HAVE_DARWIN_ACL
if (default_entry_acl_type & ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
#if HAVE_ACL_TYPE_NFS4
/*
* acl_get_entry_type_np() fails with non-NFSv4 ACLs
*/
if (acl_get_entry_type_np(acl_entry, &acl_type) != 0) {
archive_set_error(&a->archive, errno, "Failed "
"to get ACL type from a NFSv4 ACL entry");
return (ARCHIVE_WARN);
}
switch (acl_type) {
case ACL_ENTRY_TYPE_ALLOW:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALLOW;
break;
case ACL_ENTRY_TYPE_DENY:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DENY;
break;
case ACL_ENTRY_TYPE_AUDIT:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_AUDIT;
break;
case ACL_ENTRY_TYPE_ALARM:
entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALARM;
break;
default:
archive_set_error(&a->archive, errno,
"Invalid NFSv4 ACL entry type");
return (ARCHIVE_WARN);
}
#endif /* HAVE_ACL_TYPE_NFS4 */
/*
* Libarchive stores "flag" (NFSv4 inheritance bits)
* in the ae_perm bitmap.
*
* acl_get_flagset_np() fails with non-NFSv4 ACLs
*/
if (acl_get_flagset_np(acl_entry, &acl_flagset) != 0) {
archive_set_error(&a->archive, errno,
"Failed to get flagset from a NFSv4 ACL entry");
return (ARCHIVE_WARN);
}
for (i = 0; i < (int)(sizeof(acl_inherit_map) / sizeof(acl_inherit_map[0])); ++i) {
r = acl_get_flag_np(acl_flagset,
acl_inherit_map[i].platform_inherit);
if (r == -1) {
archive_set_error(&a->archive, errno,
"Failed to check flag in a NFSv4 "
"ACL flagset");
return (ARCHIVE_WARN);
} else if (r)
ae_perm |= acl_inherit_map[i].archive_inherit;
}
}
#endif /* HAVE_ACL_TYPE_NFS4 || HAVE_DARWIN_ACL */
if (acl_get_permset(acl_entry, &acl_permset) != 0) {
archive_set_error(&a->archive, errno,
"Failed to get ACL permission set");
return (ARCHIVE_WARN);
}
for (i = 0; i < (int)(sizeof(acl_perm_map) / sizeof(acl_perm_map[0])); ++i) {
/*
* acl_get_perm() is spelled differently on different
* platforms; see above.
*/
r = ACL_GET_PERM(acl_permset, acl_perm_map[i].platform_perm);
if (r == -1) {
archive_set_error(&a->archive, errno,
"Failed to check permission in an ACL permission set");
return (ARCHIVE_WARN);
} else if (r)
ae_perm |= acl_perm_map[i].archive_perm;
}
archive_entry_acl_add_entry(entry, entry_acl_type,
ae_perm, ae_tag,
ae_id, ae_name);
s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);
#if !HAVE_DARWIN_ACL
if (s == -1) {
archive_set_error(&a->archive, errno,
"Failed to get next ACL entry");
return (ARCHIVE_WARN);
}
#endif
}
return (ARCHIVE_OK);
}
#endif /* !HAVE_SUN_ACL */
#else /* !HAVE_POSIX_ACL && !HAVE_NFS4_ACL */
static int
setup_acls(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
(void)a; /* UNUSED */
(void)entry; /* UNUSED */
(void)fd; /* UNUSED */
return (ARCHIVE_OK);
}
#endif /* !HAVE_POSIX_ACL && !HAVE_NFS4_ACL */
#if (HAVE_FGETXATTR && HAVE_FLISTXATTR && HAVE_LISTXATTR && \
HAVE_LLISTXATTR && HAVE_GETXATTR && HAVE_LGETXATTR) || \
(HAVE_FGETEA && HAVE_FLISTEA && HAVE_LISTEA)
/*
* Linux and AIX extended attribute support.
*
* TODO: By using a stack-allocated buffer for the first
* call to getxattr(), we might be able to avoid the second
* call entirely. We only need the second call if the
* stack-allocated buffer is too small. But a modest buffer
* of 1024 bytes or so will often be big enough. Same applies
* to listxattr().
*/
static int
setup_xattr(struct archive_read_disk *a,
struct archive_entry *entry, const char *name, int fd, const char *accpath)
{
ssize_t size;
void *value = NULL;
#if HAVE_FGETXATTR
if (fd >= 0)
size = fgetxattr(fd, name, NULL, 0);
else if (!a->follow_symlinks)
size = lgetxattr(accpath, name, NULL, 0);
else
size = getxattr(accpath, name, NULL, 0);
#elif HAVE_FGETEA
if (fd >= 0)
size = fgetea(fd, name, NULL, 0);
else if (!a->follow_symlinks)
size = lgetea(accpath, name, NULL, 0);
else
size = getea(accpath, name, NULL, 0);
#endif
if (size == -1) {
archive_set_error(&a->archive, errno,
"Couldn't query extended attribute");
return (ARCHIVE_WARN);
}
if (size > 0 && (value = malloc(size)) == NULL) {
archive_set_error(&a->archive, errno, "Out of memory");
return (ARCHIVE_FATAL);
}
#if HAVE_FGETXATTR
if (fd >= 0)
size = fgetxattr(fd, name, value, size);
else if (!a->follow_symlinks)
size = lgetxattr(accpath, name, value, size);
else
size = getxattr(accpath, name, value, size);
#elif HAVE_FGETEA
if (fd >= 0)
size = fgetea(fd, name, value, size);
else if (!a->follow_symlinks)
size = lgetea(accpath, name, value, size);
else
size = getea(accpath, name, value, size);
#endif
if (size == -1) {
archive_set_error(&a->archive, errno,
"Couldn't read extended attribute");
return (ARCHIVE_WARN);
}
archive_entry_xattr_add_entry(entry, name, value, size);
free(value);
return (ARCHIVE_OK);
}
static int
setup_xattrs(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
char *list, *p;
const char *path;
ssize_t list_size;
path = NULL;
if (*fd < 0) {
path = archive_entry_sourcepath(entry);
if (path == NULL || (a->tree != NULL &&
a->tree_enter_working_dir(a->tree) != 0))
path = archive_entry_pathname(entry);
if (path == NULL) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Couldn't determine file path to read "
"extended attributes");
return (ARCHIVE_WARN);
}
if (a->tree != NULL && (a->follow_symlinks ||
archive_entry_filetype(entry) != AE_IFLNK)) {
*fd = a->open_on_current_dir(a->tree,
path, O_RDONLY | O_NONBLOCK);
}
}
#if HAVE_FLISTXATTR
if (*fd >= 0)
list_size = flistxattr(*fd, NULL, 0);
else if (!a->follow_symlinks)
list_size = llistxattr(path, NULL, 0);
else
list_size = listxattr(path, NULL, 0);
#elif HAVE_FLISTEA
if (*fd >= 0)
list_size = flistea(*fd, NULL, 0);
else if (!a->follow_symlinks)
list_size = llistea(path, NULL, 0);
else
list_size = listea(path, NULL, 0);
#endif
if (list_size == -1) {
if (errno == ENOTSUP || errno == ENOSYS)
return (ARCHIVE_OK);
archive_set_error(&a->archive, errno,
"Couldn't list extended attributes");
return (ARCHIVE_WARN);
}
if (list_size == 0)
return (ARCHIVE_OK);
if ((list = malloc(list_size)) == NULL) {
archive_set_error(&a->archive, errno, "Out of memory");
return (ARCHIVE_FATAL);
}
#if HAVE_FLISTXATTR
if (*fd >= 0)
list_size = flistxattr(*fd, list, list_size);
else if (!a->follow_symlinks)
list_size = llistxattr(path, list, list_size);
else
list_size = listxattr(path, list, list_size);
#elif HAVE_FLISTEA
if (*fd >= 0)
list_size = flistea(*fd, list, list_size);
else if (!a->follow_symlinks)
list_size = llistea(path, list, list_size);
else
list_size = listea(path, list, list_size);
#endif
if (list_size == -1) {
archive_set_error(&a->archive, errno,
"Couldn't retrieve extended attributes");
free(list);
return (ARCHIVE_WARN);
}
for (p = list; (p - list) < list_size; p += strlen(p) + 1) {
if (strncmp(p, "system.", 7) == 0 ||
strncmp(p, "xfsroot.", 8) == 0)
continue;
setup_xattr(a, entry, p, *fd, path);
}
free(list);
return (ARCHIVE_OK);
}
#elif HAVE_EXTATTR_GET_FILE && HAVE_EXTATTR_LIST_FILE && \
HAVE_DECL_EXTATTR_NAMESPACE_USER
/*
* FreeBSD extattr interface.
*/
/* TODO: Implement this. Follow the Linux model above, but
* with FreeBSD-specific system calls, of course. Be careful
* to not include the system extattrs that hold ACLs; we handle
* those separately.
*/
static int
setup_xattr(struct archive_read_disk *a, struct archive_entry *entry,
int namespace, const char *name, const char *fullname, int fd,
const char *path);
static int
setup_xattr(struct archive_read_disk *a, struct archive_entry *entry,
int namespace, const char *name, const char *fullname, int fd,
const char *accpath)
{
ssize_t size;
void *value = NULL;
if (fd >= 0)
size = extattr_get_fd(fd, namespace, name, NULL, 0);
else if (!a->follow_symlinks)
size = extattr_get_link(accpath, namespace, name, NULL, 0);
else
size = extattr_get_file(accpath, namespace, name, NULL, 0);
if (size == -1) {
archive_set_error(&a->archive, errno,
"Couldn't query extended attribute");
return (ARCHIVE_WARN);
}
if (size > 0 && (value = malloc(size)) == NULL) {
archive_set_error(&a->archive, errno, "Out of memory");
return (ARCHIVE_FATAL);
}
if (fd >= 0)
size = extattr_get_fd(fd, namespace, name, value, size);
else if (!a->follow_symlinks)
size = extattr_get_link(accpath, namespace, name, value, size);
else
size = extattr_get_file(accpath, namespace, name, value, size);
if (size == -1) {
free(value);
archive_set_error(&a->archive, errno,
"Couldn't read extended attribute");
return (ARCHIVE_WARN);
}
archive_entry_xattr_add_entry(entry, fullname, value, size);
free(value);
return (ARCHIVE_OK);
}
static int
setup_xattrs(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
char buff[512];
char *list, *p;
ssize_t list_size;
const char *path;
int namespace = EXTATTR_NAMESPACE_USER;
path = NULL;
if (*fd < 0) {
path = archive_entry_sourcepath(entry);
if (path == NULL || (a->tree != NULL &&
a->tree_enter_working_dir(a->tree) != 0))
path = archive_entry_pathname(entry);
if (path == NULL) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Couldn't determine file path to read "
"extended attributes");
return (ARCHIVE_WARN);
}
if (a->tree != NULL && (a->follow_symlinks ||
archive_entry_filetype(entry) != AE_IFLNK)) {
*fd = a->open_on_current_dir(a->tree,
path, O_RDONLY | O_NONBLOCK);
}
}
if (*fd >= 0)
list_size = extattr_list_fd(*fd, namespace, NULL, 0);
else if (!a->follow_symlinks)
list_size = extattr_list_link(path, namespace, NULL, 0);
else
list_size = extattr_list_file(path, namespace, NULL, 0);
if (list_size == -1 && errno == EOPNOTSUPP)
return (ARCHIVE_OK);
if (list_size == -1) {
archive_set_error(&a->archive, errno,
"Couldn't list extended attributes");
return (ARCHIVE_WARN);
}
if (list_size == 0)
return (ARCHIVE_OK);
if ((list = malloc(list_size)) == NULL) {
archive_set_error(&a->archive, errno, "Out of memory");
return (ARCHIVE_FATAL);
}
if (*fd >= 0)
list_size = extattr_list_fd(*fd, namespace, list, list_size);
else if (!a->follow_symlinks)
list_size = extattr_list_link(path, namespace, list, list_size);
else
list_size = extattr_list_file(path, namespace, list, list_size);
if (list_size == -1) {
archive_set_error(&a->archive, errno,
"Couldn't retrieve extended attributes");
free(list);
return (ARCHIVE_WARN);
}
p = list;
while ((p - list) < list_size) {
size_t len = 255 & (int)*p;
char *name;
strcpy(buff, "user.");
name = buff + strlen(buff);
memcpy(name, p + 1, len);
name[len] = '\0';
setup_xattr(a, entry, namespace, name, buff, *fd, path);
p += 1 + len;
}
free(list);
return (ARCHIVE_OK);
}
#else
/*
* Generic (stub) extended attribute support.
*/
static int
setup_xattrs(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
(void)a; /* UNUSED */
(void)entry; /* UNUSED */
(void)fd; /* UNUSED */
return (ARCHIVE_OK);
}
#endif
#if defined(HAVE_LINUX_FIEMAP_H)
/*
* Linux FIEMAP sparse interface.
*
* The FIEMAP ioctl returns an "extent" for each physical allocation
* on disk. We need to process those to generate a more compact list
* of logical file blocks. We also need to be very careful to use
* FIEMAP_FLAG_SYNC here, since there are reports that Linux sometimes
* does not report allocations for newly-written data that hasn't
* been synced to disk.
*
* It's important to return a minimal sparse file list because we want
* to not trigger sparse file extensions if we don't have to, since
* not all readers support them.
*/
static int
setup_sparse_fiemap(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
char buff[4096];
struct fiemap *fm;
struct fiemap_extent *fe;
int64_t size;
int count, do_fiemap, iters;
int exit_sts = ARCHIVE_OK;
if (archive_entry_filetype(entry) != AE_IFREG
|| archive_entry_size(entry) <= 0
|| archive_entry_hardlink(entry) != NULL)
return (ARCHIVE_OK);
if (*fd < 0) {
const char *path;
path = archive_entry_sourcepath(entry);
if (path == NULL)
path = archive_entry_pathname(entry);
if (a->tree != NULL)
*fd = a->open_on_current_dir(a->tree, path,
O_RDONLY | O_NONBLOCK | O_CLOEXEC);
else
*fd = open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC);
if (*fd < 0) {
archive_set_error(&a->archive, errno,
"Can't open `%s'", path);
return (ARCHIVE_FAILED);
}
__archive_ensure_cloexec_flag(*fd);
}
/* Initialize buffer to avoid the error valgrind complains about. */
memset(buff, 0, sizeof(buff));
count = (sizeof(buff) - sizeof(*fm))/sizeof(*fe);
fm = (struct fiemap *)buff;
fm->fm_start = 0;
fm->fm_length = ~0ULL;;
fm->fm_flags = FIEMAP_FLAG_SYNC;
fm->fm_extent_count = count;
do_fiemap = 1;
size = archive_entry_size(entry);
for (iters = 0; ; ++iters) {
int i, r;
r = ioctl(*fd, FS_IOC_FIEMAP, fm);
if (r < 0) {
/* When something error happens, it is better we
* should return ARCHIVE_OK because an earlier
* version(<2.6.28) cannot perform FS_IOC_FIEMAP. */
goto exit_setup_sparse_fiemap;
}
if (fm->fm_mapped_extents == 0) {
if (iters == 0) {
/* Fully sparse file; insert a zero-length "data" entry */
archive_entry_sparse_add_entry(entry, 0, 0);
}
break;
}
fe = fm->fm_extents;
for (i = 0; i < (int)fm->fm_mapped_extents; i++, fe++) {
if (!(fe->fe_flags & FIEMAP_EXTENT_UNWRITTEN)) {
/* The fe_length of the last block does not
* adjust itself to its size files. */
int64_t length = fe->fe_length;
if (fe->fe_logical + length > (uint64_t)size)
length -= fe->fe_logical + length - size;
if (fe->fe_logical == 0 && length == size) {
/* This is not sparse. */
do_fiemap = 0;
break;
}
if (length > 0)
archive_entry_sparse_add_entry(entry,
fe->fe_logical, length);
}
if (fe->fe_flags & FIEMAP_EXTENT_LAST)
do_fiemap = 0;
}
if (do_fiemap) {
fe = fm->fm_extents + fm->fm_mapped_extents -1;
fm->fm_start = fe->fe_logical + fe->fe_length;
} else
break;
}
exit_setup_sparse_fiemap:
return (exit_sts);
}
#if !defined(SEEK_HOLE) || !defined(SEEK_DATA)
static int
setup_sparse(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
return setup_sparse_fiemap(a, entry, fd);
}
#endif
#endif /* defined(HAVE_LINUX_FIEMAP_H) */
#if defined(SEEK_HOLE) && defined(SEEK_DATA)
/*
* SEEK_HOLE sparse interface (FreeBSD, Linux, Solaris)
*/
static int
setup_sparse(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
int64_t size;
off_t initial_off;
off_t off_s, off_e;
int exit_sts = ARCHIVE_OK;
int check_fully_sparse = 0;
if (archive_entry_filetype(entry) != AE_IFREG
|| archive_entry_size(entry) <= 0
|| archive_entry_hardlink(entry) != NULL)
return (ARCHIVE_OK);
/* Does filesystem support the reporting of hole ? */
if (*fd < 0 && a->tree != NULL) {
const char *path;
path = archive_entry_sourcepath(entry);
if (path == NULL)
path = archive_entry_pathname(entry);
*fd = a->open_on_current_dir(a->tree, path,
O_RDONLY | O_NONBLOCK);
if (*fd < 0) {
archive_set_error(&a->archive, errno,
"Can't open `%s'", path);
return (ARCHIVE_FAILED);
}
}
if (*fd >= 0) {
#ifdef _PC_MIN_HOLE_SIZE
if (fpathconf(*fd, _PC_MIN_HOLE_SIZE) <= 0)
return (ARCHIVE_OK);
#endif
initial_off = lseek(*fd, 0, SEEK_CUR);
if (initial_off != 0)
lseek(*fd, 0, SEEK_SET);
} else {
const char *path;
path = archive_entry_sourcepath(entry);
if (path == NULL)
path = archive_entry_pathname(entry);
#ifdef _PC_MIN_HOLE_SIZE
if (pathconf(path, _PC_MIN_HOLE_SIZE) <= 0)
return (ARCHIVE_OK);
#endif
*fd = open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC);
if (*fd < 0) {
archive_set_error(&a->archive, errno,
"Can't open `%s'", path);
return (ARCHIVE_FAILED);
}
__archive_ensure_cloexec_flag(*fd);
initial_off = 0;
}
#ifndef _PC_MIN_HOLE_SIZE
/* Check if the underlying filesystem supports seek hole */
off_s = lseek(*fd, 0, SEEK_HOLE);
if (off_s < 0)
#if defined(HAVE_LINUX_FIEMAP_H)
return setup_sparse_fiemap(a, entry, fd);
#else
goto exit_setup_sparse;
#endif
else if (off_s > 0)
lseek(*fd, 0, SEEK_SET);
#endif
off_s = 0;
size = archive_entry_size(entry);
while (off_s < size) {
off_s = lseek(*fd, off_s, SEEK_DATA);
if (off_s == (off_t)-1) {
if (errno == ENXIO) {
/* no more hole */
if (archive_entry_sparse_count(entry) == 0) {
/* Potentially a fully-sparse file. */
check_fully_sparse = 1;
}
break;
}
archive_set_error(&a->archive, errno,
"lseek(SEEK_HOLE) failed");
exit_sts = ARCHIVE_FAILED;
goto exit_setup_sparse;
}
off_e = lseek(*fd, off_s, SEEK_HOLE);
if (off_e == (off_t)-1) {
if (errno == ENXIO) {
off_e = lseek(*fd, 0, SEEK_END);
if (off_e != (off_t)-1)
break;/* no more data */
}
archive_set_error(&a->archive, errno,
"lseek(SEEK_DATA) failed");
exit_sts = ARCHIVE_FAILED;
goto exit_setup_sparse;
}
if (off_s == 0 && off_e == size)
break;/* This is not sparse. */
archive_entry_sparse_add_entry(entry, off_s,
off_e - off_s);
off_s = off_e;
}
if (check_fully_sparse) {
if (lseek(*fd, 0, SEEK_HOLE) == 0 &&
lseek(*fd, 0, SEEK_END) == size) {
/* Fully sparse file; insert a zero-length "data" entry */
archive_entry_sparse_add_entry(entry, 0, 0);
}
}
exit_setup_sparse:
lseek(*fd, initial_off, SEEK_SET);
return (exit_sts);
}
#elif !defined(HAVE_LINUX_FIEMAP_H)
/*
* Generic (stub) sparse support.
*/
static int
setup_sparse(struct archive_read_disk *a,
struct archive_entry *entry, int *fd)
{
(void)a; /* UNUSED */
(void)entry; /* UNUSED */
(void)fd; /* UNUSED */
return (ARCHIVE_OK);
}
#endif
#endif /* !defined(_WIN32) || defined(__CYGWIN__) */