Reported by Göran Udeborg on 2013-03-09.
* src/extract.c (extract_skip): New function.
(prepare_to_extract): Set extractor to extract_skip if starting
at a partial member.
* src/incremen.c (procdir): Set directory->tagfile in
the exclusion_tag_contents case.
(makedumpdir): Mark all entries as ignored if directory->tagfile
is set.
Free new_dump before returning.
(maketagdumpdir): New function.
(scan_directory): If directory->children is set to
NO_CHILDREN and directory->tagfile is set, create a
dumpdir consisting of the tagfile only.
* tests/exclude08.at: New testcase.
* tests/exclude09.at: New testcase.
* tests/exclude10.at: New testcase.
* tests/exclude11.at: New testcase.
* tests/exclude12.at: New testcase.
* tests/exclude13.at: New testcase.
* tests/exclude14.at: New testcase.
* tests/exclude15.at: New testcase.
* tests/exclude16.at: New testcase.
* tests/Makefile.am: Add new tests.
* tests/testsuite.at: Include new tests.
* tests/atlocal.in (mkexcltest): New function.
* tests/chtype.at: Update keywords.
* tests/filerem01.at: Likewise.
* tests/filerem02.at: Likewise.
* tests/incremental.at: Likewise.
* tests/multiv04.at: Likewise.
Any option taking a command name as its argument accepts
additional arguments as well.
* lib/wordsplit.c: New file.
* lib/wordsplit.h: New file.
* lib/Makefile.am: Add new files.
* src/system.c (xexec): New function.
(run_decompress_program): Use wordsplit.
(sys_child_open_for_compress,sys_exec_command)
(sys_exec_info_script)
(sys_exec_checkpoint_script): Use xexec to invoke external
command.
* NEWS: Update.
* doc/tar.texi: Update.
Inspired by a prototype by Nathan Stratton Treadway in
<http://lists.gnu.org/archive/html/bug-tar/2013-01/msg00000.html>.
* src/incremen.c (read_num): Rewrite by merging read_negative_num
and read_unsigned_num. Use strtosysint rather than rolling this
stuff ourselves. Change return type to bool. All uses changed.
(read_negative_num, read_unsigned_num): Remove.
(read_num, read_timespec, read_incr_db_2): Improve quality of
diagnostics, e.g., by supplying byte offset of error.
* configure.ac (gl_GCC_VERSION_IFELSE): New macro, from coreutils.
(gl_gcc_warnings): By default, disable warnings for GCC versions
before 4.6. This works around a failure when building from git on
Ubuntu 10, reported privately by Nathan Stratton Treadway.
* src/incremen.c (read_unsigned_num): Last arg is intmax_t *, not
uintmax_t, for consistency with other readers. All callers changed.
Avoid signed integer overflow.
(read_num):
Original problem reported for HP-UX LVM v2.2 by Michael White in
<http://lists.gnu.org/archive/html/bug-tar/2012-10/msg00000.html>.
This patch fixes some other gotchas that I noticed.
* gnulib.modules: Add extern-inline.
* src/common.h: Use _GL_INLINE_HEADER_BEGIN, _GL_INLINE_HEADER_END.
(COMMON_INLINE, max, min): New macros.
(represent_uintmax, valid_timespec): New inline functions.
(SYSINT_BUFSIZE): New constant.
(sysinttostr, strtosysint, decode_timespec): New decls.
* src/create.c (start_private_header): Silently bring the time_t
value into range; it is now the caller's responsibility to deal
with any overflow error. Use uid 0 and gid 0 rather than the
user's uid/gid, since the faked header isn't "owned" by the user
and the uid/gid could in theory be out of range. Leave major and
minor zeroed.
(FILL): Remove.
(write_gnu_long_link): Let start_private_header zero things out.
* src/create.c (write_gnu_long_link, write_extended):
* src/xheader.c (xheader_write_global):
Use start_time, not current time; no point hammering on the clock.
* src/compare.c (diff_multivol): Check that offset, size are in range.
* src/incremen.c (read_incr_db_01, write_directory_file_entry):
Allow negative time_t, dev_t, and ino_t.
* src/list.c (max): Remove (moved to common.h).
(read_header): Check that size is in range.
(from_header): Return intmax_t, not uintmax_t, to allow negative.
All callers changed. At compile time, check assumptions about
intmax_t and uintmax_t. Use bool for booleans. Avoid overflow
hassles on picky hosts.
(mode_from_header): Last arg is now bool *, not unsigned *.
All callers changed.
(simple_print_header): Do not assume UID, GID fit in 'long'.
* src/list.c (from_header):
* src/xheader.c (out_of_range_header):
Arg is now a plain minimum value, not minus minval converted to
uintmax_t. All callers changed.
* src/misc.c (COMMON_INLINE): New macro.
(sysinttostr, strtosysint, decode_timespec): New functions.
* src/sparse.c (oldgnu_add_sparse, oldgnu_fixup_header)
(star_fixup_header):
Check for offset overflow.
(decode_num): Clear errno before calling strtoumax.
* src/tar.c (expand_pax_option): Don't discard nanoseconds.
* src/xheader.c (assign_time_option): Allow negative time_t.
(decode_record): Simplify, since out-of-range string is guaranteed
to produce a value exceeding len_max.
(xheader_read): Last arg is off_t, not size_t.
Caller should diagnose negative arg, as needed.
Check that it's in range.
(enum decode_time_status): Remove.
(_decode_time): Remove, folding into decode_time.
(decode_time): Return bool, not enum decode_time_status.
Rely on decode_timespec to do most of the work.
(code_signed_num): New function.
(code_num): Use it.
(decode_signed_num): New function.
(decode_num): Use it.
(gid_coder, gid_decoder, uid_coder, uid_decoder, sparse_map_decoder)
(sparse_map_decoder): Code and decode negative values.
(sparse_map_decoder): Improve check for out-of-range values.
* tests/time01.at: New file.
* tests/Makefile.am (TESTSUITE_AT): Add it.
* tests/testsuite.at: Include it.
* gnulib.modules (fchmodat, fchownat, fstatat, mkdirat, unlinkat):
Add. These were split out in gnulib, so we now need to request
them separately. mkdirat, for example, is not in Solaris 10.
This has a similar meaning as in other GNU applications
such as coreutils and Emacs.
* NEWS: Document it.
* .gitignore: Remove redundant build-aux.
Remove gnu, since gnu/Makefile.am is now in git.
Add gnu/.gitignore, gnu/charset.alias, gnu/*.h, gnu/*/ to cover
autogenerated files.
* bootstrap.conf (gnulib_mk): Remove.
* configure.ac: Add support for --enable-gcc-warnings,
taken from coreutils and simplified.
* gnu/Makefile.am: New file. Formerly this was autogenerated,
but the autogenerated file has been renamed to gnulib.mk,
its usual name when bootstrapping from gnulib.
This way, AM_CFLAGS can incorporate warning options.
* gnulib.modules: Add manywarnings.
* lib/Makefile.am, src/Makefile.am (AM_CFLAGS): New macro,
incorporating warning options.
* lib/attr-xattr.in.h (ENOATTR): New macro, if not already defined.
* src/buffer.c (magic): Don't rely on incomplete initializers.
* src/common.h (report_difference): Add printf format attribute.
* src/system.c (sys_exec_command, sys_exec_info_script)
(sys_exec_checkpoint_script):
* src/tar.c (update_argv):
Add casts to char * to pacify GCC warnings about using string
literals in a char * context.
* src/xattrs.c, src/xattrs.h (xattrs_clear_setup):
Declare parameters as (void), not ().
* src/xheader.c (xheader_format_name): Initialize pptr to null,
to pacify GCC. Remove unnecessary test of nptr versus null.
* src/xheader.c (xattr_decode_keyword)
(xattr_encode_keyword): New functions.
(xheader_print_n,xattr_decoder): Use them.
* tests/xattr05.at: New test case.
* tests/Makefile.am: Add new test case.
* tests/testsuite.at: Likewise.
* configure.ac: Avoid linking against -lacl when
--without-posix-acls is given.
* tests/selacl01.at: Call restorecon
* tests/selnx01.at: Likewise.
* tests/testsuite.at (AT_SELINUX_UTILS_PREREQ): Likewise.
(AT_SELINUX_PREREQ,AT_ACLS_PREREQ): Use the right _PREREQ macros.
* src/xattrs.c: Don't mix variable declarations and statements.
Use proper data types. Remove improper use of const qualifiers.
Use x2nrealloc to reallocate memory buffers.
* configure.ac: Check whether ACLs are available on the
host system.
* gnulib.modules: Add acl
* src/create.c (start_header): Store ACLs when creating
a POSIX archive.
(dump_file0): Handle ACLs.
* src/extract.c (delayed_set_stat) <acls_a_ptr, acls_a_len>
<acls_d_ptr, acls_d_len>: New members.
(delayed_link): Likewise.
(set_stat,delay_set_stat)
(apply_nonancestor_delayed_set_stat): Set ACLs.
* src/tar.c: New options: "--acls", "--no-acls"
(tar_stat_destroy): Free acls_a_ptr and acls_d_ptr fields.
* src/tar.h (tar_stat_info) <acls_a_ptr, acls_a_len>
<acls_d_ptr, acls_d_len>: New members.
* src/xattrs.c (xattrs_acls_get, xattrs_acls_set): New functions.
* src/xheader.c: Support new keywors: "SCHILY.acl.access" and
"SCHILY.acl.default".
* tests/Makefile.am: Add new tests.
* tests/testsuite.at: Likewise.
* tests/acls01.at: New test.
* tests/acls02.at: New test.
* src/Makefile.am: Add xattrs.[ch]
* src/xattrs.c: New file.
* src/xattrs.h: New file.
* src/common.h (READ_LIKE_SUBCOMMAND): New define.
(selinux_context_option, acls_option, xattrs_option): New globals.
(xheader_xattr_init, xheader_xattr_free)
(xheader_xattr_copy, xheader_xattr_add): New protos.
(WARN_XATTR_WRITE): New mask.
* src/create.c (start_header): Handle xattrs pairs if in POSIX format.
(dump_file0): Handle extended attributes.
* src/extract.c (delayed_set_stat,delayed_link) <xattr_map_size>
<xattr_map>: New members.
(set_xattr): New static function.
(open_output_file): Accept an additional argument indicating
whether the file has already been created.
(set_stat,delay_set_stat)
(apply_nonancestor_delayed_set_stat)
(extract_file): Handle extended attributes.
* src/list.c (decode_header, simple_print_header): Display
extended attributes.
* src/tar.c: New options --xattrs, --no-xattrs, --xattrs-include,
--xattrs-exclude
(tar_stat_destroy): Free the xattr_map storage.
* src/tar.h (xattr_array): New struct.
(tar_stat_info) <xattr_map_size, xattr_map>: New members.
* src/warning.c: New warning control keyword "xattr-write".
* src/xheader.c (xheader_xattr_init)
(xheader_xattr_free, xheader_xattr_add)
(xheader_xattr_copy): New functions.
(struct xhdr_tab) <prefix>: New member.
(locate_handler): Permit selecting the keyword based on its
prefix.
(xheader_protected_pattern_p)
(xheader_protected_keyword_p): Likewise.
(xattr_coder, xattr_decoder): New functions.
(xhdr_tab): Reflect the changes to struct xhdr_tab.
New keyword "SCHILY.xattr".
* tests/Makefile.am: Add new tests.
* tests/testsuite.at: Likewise.
(AT_CHECK_UTIL, AT_XATTRS_UTILS_PREREQ)
(AT_CAPABILITIES_UTILS_PREREQ, AT_XATTRS_PREREQ): New defuns.
* tests/xattr01.at: New test.
* tests/xattr02.at: New test.
* tests/xattr03.at: New test.
* tests/xattr04.at: New test.
* tests/capabs_raw01.at: New test.
This patch adds *xattr() stubs in case extended attribute support is
not present and implements the *attrat() family of functions. Based
on the patch by Pavel Raiskup <pavel@raiskup.cz> for gnulib.
* acinclude.m4 (TAR_HEADERS_ATTR_XATTR_H): New defun.
* configure.ac: Call TAR_HEADERS_ATTR_XATTR_H
* lib/Makefile.am: Add xattr-at.[ch], distribute attr-xattr.in.h
[!TAR_COND_XATTR_H]: Build attr/xattr.h
* lib/attr-xattr.in.h: New file.
* lib/xattr-at.c: New file.
* lib/xattr-at.h: New file.
When used with --listed-incrfental and --one-file-system, tar
was unable to cope with directories that had once been part of the
dumped system and became separate mount points afterwards. The bug
has been reported and a fix proposed by Nathan Stratton Treadway.
* src/incremen.c (procdir): If one_file_system_option is in effect,
clear out dumpdir info from the directory.
* tests/Makefile.am: Add new testcase.
* tests/listed05.at: New testcase.
* tests/testsuite.at (AT_PRIVILEGED_PREREQ): New macro.
include listed05.at.
* THANKS: Update.
* doc/tar.texi (gzip): Don't claim that -I 'gzip --best' works.
Problem reported by Davide Brini in
<http://lists.gnu.org/archive/html/bug-tar/2012-07/msg00025.html>.
Also, improve some of the surrounding text.
This file is a placeholder. It will be replaced with the actual ChangeLog
by make dist. Run make ChangeLog if you wish to create it earlier.
This is not true for Tandem NonStop Kernel. See Joachim Schmitz's
comment in <http://bugs.gnu.org/10305#111>.
* gnulib.modules: Add root-uid.
* src/extract.c: Include <root-uid.h>.
(extr_init): Don't assume root is uid 0.
This lint was found by GCC 4.6.2 on Fedora 15 x86-64.
* src/buffer.c (buffer_write_global_xheader, mv_end, set_start_time)
(compute_duration, print_total_stats, flush_read, flush_write):
* src/checkpoint.c (checkpoint_finish_compile):
* src/list.c (test_archive_label):
* src/misc.c (chdir_count):
* src/names.c (const):
* src/unlink.c (finish_deferred_unlinks):
Define with (void) instead of with (), for slightly-better C type
checking and to avoid a GCC warning.
* src/compare.c (diff_dumpdir):
* src/tar.c (parse_owner_group): Remove unused local.
* src/misc.c (chdir_do):
* src/tar.c (add_exclude_array): Rename local to avoid shadowing.
(LOW_DENSITY_NUM, MID_DENSITY_NUM, HIGH_DENSITY_NUM):
Define only if needed.
* src/update.c (update_archive): Initialize a local; this fixes
what appears to be a real bug.
Problem reported by Pino Toscano in
<http://lists.gnu.org/archive/html/bug-tar/2012-01/msg00040.html>.
* gnulib.modules: Add fcntl-h, which defines
HAVE_WORKING_O_NOFOLLOW.
* src/extract.c (open_output_file): Use HAVE_WORKING_O_NOFOLLOW,
not O_NOFOLLOW, when testing whther O_NOFOLLOW works.
This file is a placeholder. It will be replaced with the actual ChangeLog
by make dist. Run make ChangeLog if you wish to create it earlier.
On Data Migration Facility (DMF), High Peformance Storage System (HPSS),
and presumably other file systems based on hierarchical storage, opening
a regular file with O_NONBLOCK can cause later reads to fail with
errno == EAGAIN. We need the O_NONBLOCK to avoid some security races.
Work around the problem by using fcntl to clear the O_NONBLOCK
flag if I/O fails with that errno value.
Problem reported by Vitezslav Cizek in
<http://lists.gnu.org/archive/html/bug-tar/2012-01/msg00000.html>.
* src/common.h (blocking_read, blocking_write): New decls.
* src/misc.c (blocking_read, blocking_write): New functions.
* src/compare.c (process_rawdata):
* src/create.c (dump_regular_file):
* src/extract.c (extract_file):
* src/sparse.c (sparse_scan_file, sparse_extract_region):
The regression was introduced by 8f390db9. This patch implements additional
option --skip-old-files, which silently skips members which would cause
writing over existing files, and restores --keep-old-files to its traditional
behavior.
* NEWS: Update.
* configure.ac: Update.
* doc/tar.texi: Document the changes.
* src/common.h (SKIP_OLD_FILES): New old_files mode.
* src/extract.c (maybe_recoverable): Restore KEEP_OLD_FILES behavior.
Handle SKIP_OLD_FILES.
* src/tar.c: New option --skip-old-files.
* tests/extrac18.at: New file.
* tests/extrac19.at: New file.
* tests/Makefile.am: Add new test cases.
* tests/testsuite.at: Likewise.
This is controlled by "existing-file" warning code, which is off
by default.
* src/common.h (WARN_EXISTING_FILE): New warning code.
(WARN_VERBOSE_WARNINGS): Add WARN_EXISTING_FILE.
* src/extract.c (maybe_recoverable): warn about existing file
if WARN_EXISTING_FILE is set.
* src/warning.c: New warning type: "existing-file"
