Commit f4caca1f authored by Martin Matuska's avatar Martin Matuska
Browse files

Update vendor/libarchive to git b4099917d6893ed77af24caff1156e044ebd4fa5

Vendor issues fixed:
PR #777: Multiple bugfixes for setup_acls()

This fixes a bug that caused ACLs not to be read properly for files and
directories inside subdirectories and as a result not being stored in tar
archives.
parent 5c8a8484
......@@ -1278,6 +1278,10 @@ CHECK_C_SOURCE_COMPILES(
"#include <sys/types.h>\n#include <sys/mount.h>\nint main(void) { struct vfsconf v; return sizeof(v);}"
HAVE_STRUCT_VFSCONF)
CHECK_C_SOURCE_COMPILES(
"#include <sys/types.h>\n#include <sys/mount.h>\nint main(void) { struct xvfsconf v; return sizeof(v);}"
HAVE_STRUCT_XVFSCONF)
# Make sure we have the POSIX version of readdir_r, not the
# older 2-argument version.
CHECK_C_SOURCE_COMPILES(
......@@ -1600,6 +1604,7 @@ IF(ENABLE_ACL)
# test for specific permissions in a permset.) Linux uses the obvious
# name, FreeBSD adds _np to mark it as "non-Posix extension."
# Test for both as a double-check that we really have POSIX-style ACL support.
CHECK_FUNCTION_EXISTS(acl_get_fd_np HAVE_ACL_GET_FD_NP)
CHECK_FUNCTION_EXISTS(acl_get_perm HAVE_ACL_GET_PERM)
CHECK_FUNCTION_EXISTS(acl_get_perm_np HAVE_ACL_GET_PERM_NP)
CHECK_FUNCTION_EXISTS(acl_get_link HAVE_ACL_GET_LINK)
......
README for libarchive bundle.
Questions? Issues?
* http://www.libarchive.org is the home for ongoing
libarchive development, including documentation, and
links to the libarchive mailing lists.
* To report an issue, use the issue tracker at
https://github.com/libarchive/libarchive/issues
* To submit an enhancement to libarchive, please submit
a pull request via GitHub.
https://github.com/libarchive/libarchive/pulls
This distribution bundle includes the following components:
* libarchive: a library for reading and writing streaming archives
* tar: the 'bsdtar' program is a full-featured 'tar'
implementation built on libarchive
* cpio: the 'bsdcpio' program is a different interface to
essentially the same functionality
* cat: the 'bsdcat' program is a simple replacement tool for
zcat, bzcat, xzcat, and such
* examples: Some small example programs that you may find useful.
* examples/minitar: a compact sample demonstrating use of libarchive.
* contrib: Various items sent to me by third parties;
please contact the authors with any questions.
The top-level directory contains the following information files:
* NEWS - highlights of recent changes
* COPYING - what you can do with this
* INSTALL - installation instructions
* README - this file
* configure - configuration script, see INSTALL for details.
* CMakeLists.txt - input for "cmake" build tool, see INSTALL
The following files in the top-level directory are used by the
'configure' script:
* Makefile.am, aclocal.m4, configure.ac
- used to build this distribution, only needed by maintainers
* Makefile.in, config.h.in
- templates used by configure script
Guide to Documentation installed by this system:
* bsdtar.1 explains the use of the bsdtar program
* bsdcpio.1 explains the use of the bsdcpio program
* bsdcat.1 explains the use of the bsdcat program
* libarchive.3 gives an overview of the library as a whole
* archive_read.3, archive_write.3, archive_write_disk.3, and
archive_read_disk.3 provide detailed calling sequences for the read
and write APIs
* archive_entry.3 details the "struct archive_entry" utility class
* archive_internals.3 provides some insight into libarchive's
internal structure and operation.
* libarchive-formats.5 documents the file formats supported by the library
* cpio.5, mtree.5, and tar.5 provide detailed information about these
popular archive formats, including hard-to-find details about
modern cpio and tar variants.
The manual pages above are provided in the 'doc' directory in
a number of different formats.
You should also read the copious comments in "archive.h" and the
source code for the sample programs for more details. Please let us
know about any errors or omissions you find.
Currently, the library automatically detects and reads the following fomats:
* GNU tar format (including GNU long filenames, long link names, and sparse files)
* Solaris 9 extended tar format (including ACLs)
* Old V7 tar archives
* POSIX ustar
* POSIX pax interchange format
* POSIX octet-oriented cpio
* SVR4 ASCII cpio
* POSIX octet-oriented cpio
* Binary cpio (big-endian or little-endian)
* ISO9660 CD-ROM images (with optional Rockridge or Joliet extensions)
* ZIP archives (with uncompressed or "deflate" compressed entries)
* GNU and BSD 'ar' archives
* 'mtree' format
* 7-Zip archives
* Microsoft CAB format
* LHA and LZH archives
* RAR archives
* XAR archives
The library also detects and handles any of the following before evaluating the archive:
* uuencoded files
* files with RPM wrapper
* gzip compression
* bzip2 compression
* compress/LZW compression
* lzma, lzip, and xz compression
* lz4 compression
* lzop compression
The library can create archives in any of the following formats:
* POSIX ustar
* POSIX pax interchange format
* "restricted" pax format, which will create ustar archives except for
entries that require pax extensions (for long filenames, ACLs, etc).
* Old GNU tar format
* Old V7 tar format
* POSIX octet-oriented cpio
* SVR4 "newc" cpio
* shar archives
* ZIP archives (with uncompressed or "deflate" compressed entries)
* GNU and BSD 'ar' archives
* 'mtree' format
* ISO9660 format
* 7-Zip archives
* XAR archives
When creating archives, the result can be filtered with any of the following:
* uuencode
* gzip compression
* bzip2 compression
* compress/LZW compression
* lzma, lzip, and xz compression
* lz4 compression
* lzop compression
Notes about the library architecture:
* This is a heavily stream-oriented system. There is no direct
support for in-place modification or random access.
* The library is designed to be extended with new compression and
archive formats. The only requirement is that the format be
readable or writable as a stream and that each archive entry be
independent. There are articles on the libarchive Wiki explaining
how to extend libarchive.
* On read, compression and format are always detected automatically.
* I've attempted to minimize static link pollution. If you don't
explicitly invoke a particular feature (such as support for a
particular compression or format), it won't get pulled in to
statically-linked programs. In particular, if you don't explicitly
enable a particular compression or decompression support, you won't
need to link against the corresponding compression or decompression
libraries. This also reduces the size of statically-linked
binaries in environments where that matters.
* On read, the library accepts whatever blocks you hand it.
Your read callback is free to pass the library a byte at a time
or mmap the entire archive and give it to the library at once.
On write, the library always produces correctly-blocked output.
* The object-style approach allows you to have multiple archive streams
open at once. bsdtar uses this in its "@archive" extension.
* The archive itself is read/written using callback functions.
You can read an archive directly from an in-memory buffer or
write it to a socket, if you wish. There are some utility
functions to provide easy-to-use "open file," etc, capabilities.
* The read/write APIs are designed to allow individual entries
to be read or written to any data source: You can create
a block of data in memory and add it to a tar archive without
first writing a temporary file. You can also read an entry from
an archive and write the data directly to a socket. If you want
to read/write entries to disk, there are convenience functions to
make this especially easy.
* Note: "pax interchange format" is really an extended tar format,
despite what the name says.
# Welcome to libarchive!
The libarchive project develops a portable, efficient C library that
can read and write streaming archives in a variety of formats. It
also includes implementations of the common `tar`, `cpio`, and `zcat`
command-line tools that use the libarchive library.
## Questions? Issues?
* http://www.libarchive.org is the home for ongoing
libarchive development, including documentation,
and links to the libarchive mailing lists.
* To report an issue, use the issue tracker at
https://github.com/libarchive/libarchive/issues
* To submit an enhancement to libarchive, please
submit a pull request via GitHub: https://github.com/libarchive/libarchive/pulls
## Contents of the Distribution
This distribution bundle includes the following major components:
* **libarchive**: a library for reading and writing streaming archives
* **tar**: the 'bsdtar' program is a full-featured 'tar' implementation built on libarchive
* **cpio**: the 'bsdcpio' program is a different interface to essentially the same functionality
* **cat**: the 'bsdcat' program is a simple replacement tool for zcat, bzcat, xzcat, and such
* **examples**: Some small example programs that you may find useful.
* **examples/minitar**: a compact sample demonstrating use of libarchive.
* **contrib**: Various items sent to me by third parties; please contact the authors with any questions.
The top-level directory contains the following information files:
* **NEWS** - highlights of recent changes
* **COPYING** - what you can do with this
* **INSTALL** - installation instructions
* **README** - this file
* **CMakeLists.txt** - input for "cmake" build tool, see INSTALL
* **configure** - configuration script, see INSTALL for details. If your copy of the source lacks a `configure` script, you can try to construct it by running the script in `build/autogen.sh` (or use `cmake`).
The following files in the top-level directory are used by the 'configure' script:
* `Makefile.am`, `aclocal.m4`, `configure.ac` - used to build this distribution, only needed by maintainers
* `Makefile.in`, `config.h.in` - templates used by configure script
## Documentation
In addition to the informational articles and documentation
in the online [libarchive Wiki](https://github.com/libarchive/libarchive/wiki),
the distribution also includes a number of manual pages:
* bsdtar.1 explains the use of the bsdtar program
* bsdcpio.1 explains the use of the bsdcpio program
* bsdcat.1 explains the use of the bsdcat program
* libarchive.3 gives an overview of the library as a whole
* archive_read.3, archive_write.3, archive_write_disk.3, and
archive_read_disk.3 provide detailed calling sequences for the read
and write APIs
* archive_entry.3 details the "struct archive_entry" utility class
* archive_internals.3 provides some insight into libarchive's
internal structure and operation.
* libarchive-formats.5 documents the file formats supported by the library
* cpio.5, mtree.5, and tar.5 provide detailed information about these
popular archive formats, including hard-to-find details about
modern cpio and tar variants.
The manual pages above are provided in the 'doc' directory in
a number of different formats.
You should also read the copious comments in `archive.h` and the
source code for the sample programs for more details. Please let us
know about any errors or omissions you find.
## Supported Formats
Currently, the library automatically detects and reads the following fomats:
* Old V7 tar archives
* POSIX ustar
* GNU tar format (including GNU long filenames, long link names, and sparse files)
* Solaris 9 extended tar format (including ACLs)
* POSIX pax interchange format
* POSIX octet-oriented cpio
* SVR4 ASCII cpio
* POSIX octet-oriented cpio
* Binary cpio (big-endian or little-endian)
* ISO9660 CD-ROM images (with optional Rockridge or Joliet extensions)
* ZIP archives (with uncompressed or "deflate" compressed entries, including support for encrypted Zip archives)
* GNU and BSD 'ar' archives
* 'mtree' format
* 7-Zip archives
* Microsoft CAB format
* LHA and LZH archives
* RAR archives (with some limitations due to RAR's proprietary status)
* XAR archives
The library also detects and handles any of the following before evaluating the archive:
* uuencoded files
* files with RPM wrapper
* gzip compression
* bzip2 compression
* compress/LZW compression
* lzma, lzip, and xz compression
* lz4 compression
* lzop compression
The library can create archives in any of the following formats:
* POSIX ustar
* POSIX pax interchange format
* "restricted" pax format, which will create ustar archives except for
entries that require pax extensions (for long filenames, ACLs, etc).
* Old GNU tar format
* Old V7 tar format
* POSIX octet-oriented cpio
* SVR4 "newc" cpio
* shar archives
* ZIP archives (with uncompressed or "deflate" compressed entries)
* GNU and BSD 'ar' archives
* 'mtree' format
* ISO9660 format
* 7-Zip archives
* XAR archives
When creating archives, the result can be filtered with any of the following:
* uuencode
* gzip compression
* bzip2 compression
* compress/LZW compression
* lzma, lzip, and xz compression
* lz4 compression
* lzop compression
## Notes about the Library Design
The following notes address many of the most common
questions we are asked about libarchive:
* This is a heavily stream-oriented system. That means that
it is optimized to read or write the archive in a single
pass from beginning to end. For example, this allows
libarchive to process archives too large to store on disk
by processing them on-the-fly as they are read from or
written to a network or tape drive. This also makes
libarchive useful for tools that need to produce
archives on-the-fly (such as webservers that provide
archived contents of a users account).
* In-place modification and random access to the contents
of an archive are not directly supported. For some formats,
this is not an issue: For example, tar.gz archives are not
designed for random access. In some other cases, libarchive
can re-open an archive and scan it from the beginning quickly
enough to provide the needed abilities even without true
random access. Of course, some applications do require true
random access; those applications should consider alternatives
to libarchive.
* The library is designed to be extended with new compression and
archive formats. The only requirement is that the format be
readable or writable as a stream and that each archive entry be
independent. There are articles on the libarchive Wiki explaining
how to extend libarchive.
* On read, compression and format are always detected automatically.
* The same API is used for all formats; in particular, it's very
easy for software using libarchive to transparently handle
any of libarchive's archiving formats.
* Libarchive's automatic support for decompression can be used
without archiving by explicitly selecting the "raw" and "empty"
formats.
* I've attempted to minimize static link pollution. If you don't
explicitly invoke a particular feature (such as support for a
particular compression or format), it won't get pulled in to
statically-linked programs. In particular, if you don't explicitly
enable a particular compression or decompression support, you won't
need to link against the corresponding compression or decompression
libraries. This also reduces the size of statically-linked
binaries in environments where that matters.
* The library is generally _thread safe_ depending on the platform:
it does not define any global variables of its own. However, some
platforms do not provide fully thread-safe versions of key C library
functions. On those platforms, libarchive will use the non-thread-safe
functions. Patches to improve this are of great interest to us.
* In particular, libarchive's modules to read or write a directory
tree do use `chdir()` to optimize the directory traversals. This
can cause problems for programs that expect to do disk access from
multiple threads. Of course, those modules are completely
optional and you can use the rest of libarchive without them.
* The library is _not_ thread aware, however. It does no locking
or thread management of any kind. If you create a libarchive
object and need to access it from multiple threads, you will
need to provide your own locking.
* On read, the library accepts whatever blocks you hand it.
Your read callback is free to pass the library a byte at a time
or mmap the entire archive and give it to the library at once.
On write, the library always produces correctly-blocked output.
* The object-style approach allows you to have multiple archive streams
open at once. bsdtar uses this in its "@archive" extension.
* The archive itself is read/written using callback functions.
You can read an archive directly from an in-memory buffer or
write it to a socket, if you wish. There are some utility
functions to provide easy-to-use "open file," etc, capabilities.
* The read/write APIs are designed to allow individual entries
to be read or written to any data source: You can create
a block of data in memory and add it to a tar archive without
first writing a temporary file. You can also read an entry from
an archive and write the data directly to a socket. If you want
to read/write entries to disk, there are convenience functions to
make this especially easy.
* Note: The "pax interchange format" is a POSIX standard extended tar
format that should be used when the older _ustar_ format is not
appropriate. It has many advantages over other tar formats
(including the legacy GNU tar format) and is widely supported by
current tar implementations.
......@@ -293,6 +293,9 @@ typedef uint64_t uintmax_t;
/* Define to 1 if you have the `acl_create_entry' function. */
#cmakedefine HAVE_ACL_CREATE_ENTRY 1
/* Define to 1 if you have the `acl_get_fd_np' function. */
#cmakedefine HAVE_ACL_GET_FD_NP 1
/* Define to 1 if you have the `acl_get_link' function. */
#cmakedefine HAVE_ACL_GET_LINK 1
......@@ -929,6 +932,9 @@ typedef uint64_t uintmax_t;
/* Define to 1 if you have `struct vfsconf'. */
#cmakedefine HAVE_STRUCT_VFSCONF 1
/* Define to 1 if you have `struct xvfsconf'. */
#cmakedefine HAVE_STRUCT_XVFSCONF 1
/* Define to 1 if you have the `symlink' function. */
#cmakedefine HAVE_SYMLINK 1
......
......@@ -624,6 +624,13 @@ AC_CHECK_TYPES(struct vfsconf,,,
#include <sys/mount.h>
])
AC_CHECK_TYPES(struct xvfsconf,,,
[#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <sys/mount.h>
])
# There are several variants of readdir_r around; we only
# accept the POSIX-compliant version.
AC_COMPILE_IFELSE(
......@@ -688,7 +695,8 @@ if test "x$enable_acl" != "xno"; then
AC_CHECK_HEADERS([acl/libacl.h])
AC_CHECK_HEADERS([sys/acl.h])
AC_CHECK_LIB([acl],[acl_get_file])
AC_CHECK_FUNCS([acl_create_entry acl_init acl_set_fd acl_set_fd_np acl_set_file])
AC_CHECK_FUNCS([acl_create_entry acl_get_fd_np])
AC_CHECK_FUNCS([acl_init acl_set_fd acl_set_fd_np acl_set_file])
AC_CHECK_TYPES(acl_permset_t,,,
[#if HAVE_SYS_TYPES_H
......
......@@ -707,10 +707,11 @@ archive_acl_text_l(struct archive_acl *acl, int flags,
if (r != 0)
return (-1);
*p++ = separator;
if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID)
if (name == NULL || (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID)) {
id = ap->id;
else
} else {
id = -1;
}
append_entry(&p, NULL, ap->tag, name,
ap->permset, id);
count++;
......
......@@ -419,12 +419,32 @@ setup_acls(struct archive_read_disk *a,
if (accpath == NULL)
accpath = archive_entry_pathname(entry);
if (*fd < 0 && a->tree != NULL) {
if (a->follow_symlinks ||
archive_entry_filetype(entry) != AE_IFLNK)
*fd = a->open_on_current_dir(a->tree,
accpath, O_RDONLY | O_NONBLOCK);
if (*fd < 0) {
if (a->tree_enter_working_dir(a->tree) != 0) {
archive_set_error(&a->archive, errno,
"Couldn't access %s", accpath);
return (ARCHIVE_FAILED);
}
}
}
archive_entry_acl_clear(entry);
acl = NULL;
#ifdef ACL_TYPE_NFS4
/* Try NFS4 ACL first. */
if (*fd >= 0)
#if HAVE_ACL_GET_FD_NP
acl = acl_get_fd_np(*fd, 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, ACL_TYPE_NFS4);
......@@ -437,12 +457,19 @@ setup_acls(struct archive_read_disk *a,
#endif
else
acl = acl_get_file(accpath, ACL_TYPE_NFS4);
#if HAVE_ACL_IS_TRIVIAL_NP
/* Ignore "trivial" ACLs that just mirror the file mode. */
acl_is_trivial_np(acl, &r);
if (r) {
acl_free(acl);
acl = NULL;
if (acl != NULL && acl_is_trivial_np(acl, &r) == 0) {
/* Ignore "trivial" ACLs that just mirror the file mode. */
if (r) {
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
if (acl != NULL) {
......@@ -450,7 +477,7 @@ setup_acls(struct archive_read_disk *a,
acl_free(acl);
return (ARCHIVE_OK);
}
#endif
#endif /* ACL_TYPE_NFS4 */
/* Retrieve access ACL from file. */
if (*fd >= 0)
......@@ -467,10 +494,22 @@ setup_acls(struct archive_read_disk *a,
#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) {
translate_acl(a, entry, acl,
ARCHIVE_ENTRY_ACL_TYPE_ACCESS);
acl_free(acl);
acl = NULL;
}
/* Only directories can have default ACLs. */
......
......@@ -1504,10 +1504,19 @@ setup_current_filesystem(struct archive_read_disk *a)
struct tree *t = a->tree;
struct statfs sfs;
#if defined(HAVE_GETVFSBYNAME) && defined(VFCF_SYNTHETIC)
# if defined(HAVE_STRUCT_VFSCONF)
struct vfsconf vfc;
# else
/* TODO: configure should set GETVFSBYNAME_ARG_TYPE to make
* this accurate; some platforms have both and we need the one that's
* used by getvfsbyname()
*
* Then the following would become:
* #if defined(GETVFSBYNAME_ARG_TYPE)
* GETVFSBYNAME_ARG_TYPE vfc;
* #endif
*/
# if defined(HAVE_STRUCT_XVFSCONF)
struct xvfsconf vfc;
# else
struct vfsconf vfc;
# endif
#endif
int r, xr = 0;
......
......@@ -28,6 +28,7 @@
/* FreeBSD 5.0 and later have ACL and extattr support. */
#if __FreeBSD__ > 4
#define HAVE_ACL_CREATE_ENTRY 1
#define HAVE_ACL_GET_FD_NP 1
#define HAVE_ACL_GET_LINK_NP 1
#define HAVE_ACL_GET_PERM_NP 1
#define HAVE_ACL_INIT 1
......
......@@ -70,15 +70,9 @@ set_acls(struct archive_entry *ae, struct myacl_t *acls)
}
static int
acl_match(acl_entry_t aclent, struct myacl_t *myacl)
{
gid_t g, *gp;
uid_t u, *up;
acl_tag_t tag_type;
acl_permset_t opaque_ps;
acl_entry_get_perm(acl_entry_t aclent) {
int permset = 0;
acl_get_tag_type(aclent, &tag_type);
acl_permset_t opaque_ps;
/* translate the silly opaque permset to a bitmap */
acl_get_permset(aclent, &opaque_ps);
......@@ -88,10 +82,61 @@ acl_match(acl_entry_t aclent, struct myacl_t *myacl)
permset |= ARCHIVE_ENTRY_ACL_WRITE;
if (acl_get_perm_np(opaque_ps, ACL_READ))
permset |= ARCHIVE_ENTRY_ACL_READ;
return permset;
}
#if 0
static int
acl_get_specific_entry(acl_t acl, acl_tag_t requested_tag_type, int requested_tag) {
int entry_id = ACL_FIRST_ENTRY;
acl_entry_t acl_entry;
acl_tag_t acl_tag_type;
while (1 == acl_get_entry(acl, entry_id, &acl_entry)) {
/* After the first time... */
entry_id = ACL_NEXT_ENTRY;
/* If this matches, return perm mask */
acl_get_tag_type(acl_entry, &acl_tag_type);
if (acl_tag_type == requested_tag_type) {
switch (acl_tag_type) {
case ACL_USER_OBJ:
if ((uid_t)requested_tag == *(uid_t *)(acl_get_qualifier(acl_entry))) {
return acl_entry_get_perm(acl_entry);
}
break;
case ACL_GROUP_OBJ:
if ((gid_t)requested_tag == *(gid_t *)(acl_get_qualifier(acl_entry))) {
return acl_entry_get_perm(acl_entry);
}
break;
case ACL_USER:
case ACL_GROUP:
case ACL_OTHER:
return acl_entry_get_perm(acl_entry);
default:
failure("Unexpected ACL tag type");