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2014-10-20Revert "archive: honor tar.umask even for pax headers"Libravatar Junio C Hamano1-2/+2
This reverts commit 10f343ea814f5c18a0913997904ee11cd9b7da24, whose output is no longer bit-for-bit equivalent from the older versions of Git, which the infrastructure to (pretend to) upload tarballs kernel.org uses depends on.
2014-09-11Merge branch 'rs/child-process-init'Libravatar Junio C Hamano1-2/+1
Code clean-up. * rs/child-process-init: run-command: inline prepare_run_command_v_opt() run-command: call run_command_v_opt_cd_env() instead of duplicating it run-command: introduce child_process_init() run-command: introduce CHILD_PROCESS_INIT
2014-08-20run-command: introduce CHILD_PROCESS_INITLibravatar René Scharfe1-2/+1
Most struct child_process variables are cleared using memset first after declaration. Provide a macro, CHILD_PROCESS_INIT, that can be used to initialize them statically instead. That's shorter, doesn't require a function call and is slightly more readable (especially given that we already have STRBUF_INIT, ARGV_ARRAY_INIT etc.). Helped-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-08-04archive: honor tar.umask even for pax headersLibravatar brian m. carlson1-2/+2
git archive's tar format uses extended pax headers to encode metadata into the archive. Most tar implementations correctly treat these as metadata, but some that do not understand the pax format extract these as files instead. Apply the tar.umask setting to these entries to prevent tampering by other users. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-23archive-tar: use parse_config_key when parsing configLibravatar Jeff King1-9/+1
This is fewer lines of code, but more importantly, fixes a bogus pointer offset. We are looking for "tar." in the section, but later assume that the dot we found is at offset 9, not 3. This is a holdover from an earlier iteration of 767cf45 which called the section "tarfilter". As a result, we could erroneously reject some filters with dots in their name, as well as read uninitialized memory. Reported by (and test by) René Scharfe. Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-10Merge branch 'rs/leave-base-name-in-name-field-of-tar'Libravatar Junio C Hamano1-0/+2
Improve compatibility with implementations of "tar" that do not like empty name field in header (with the additional prefix field holding everything). * rs/leave-base-name-in-name-field-of-tar: archive-tar: split long paths more carefully
2013-01-05archive-tar: split long paths more carefullyLibravatar René Scharfe1-0/+2
The name field of a tar header has a size of 100 characters. This limit was extended long ago in a backward compatible way by providing the additional prefix field, which can hold 155 additional characters. The actual path is constructed at extraction time by concatenating the prefix field, a slash and the name field. get_path_prefix() is used to determine which slash in the path is used as the cutting point and thus which part of it is placed into the field prefix and which into the field name. It tries to cram as much into the prefix field as possible. (And only if we can't fit a path into the provided 255 characters we use a pax extended header to store it.) If a path is longer than 100 but shorter than 156 characters and ends with a slash (i.e. is for a directory) then get_path_prefix() puts the whole path in the prefix field and leaves the name field empty. GNU tar reconstructs the path without complaint, but the tar included with NetBSD 6 does not: It reports the header to be invalid. For compatibility with this version of tar, make sure to never leave the name field empty. In order to do that, trim the trailing slash from the part considered as possible prefix, if it exists -- that way the last path component (or more, but not less) will end up in the name field. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-13archive: ustar header checksum is computed unsignedLibravatar Junio C Hamano1-3/+3
POSIX.1 (pax) is pretty clear on this: The chksum field shall be the ISO/IEC 646:1991 standard IRV representation of the octal value of the simple sum of all octets in the header logical record. Each octet in the header shall be treated as an unsigned value. These values shall be added to an unsigned integer, initialized to zero, the precision of which is not less than 17 bits. When calculating the checksum, the chksum field is treated as if it were all <space> characters. so is GNU: http://www.gnu.org/software/tar/manual/html_node/Checksumming.html Found by 7zip folks and reported by Rafał Mużyło. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-23Merge branch 'rs/archive-tree-in-tip-simplify'Libravatar Junio C Hamano1-2/+2
By René Scharfe * rs/archive-tree-in-tip-simplify: archive-tar: keep const in checksum calculation archive: simplify refname handling
2012-05-18archive-tar: keep const in checksum calculationLibravatar René Scharfe1-2/+2
For correctness, don't needlessly drop the const qualifier when casting. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-03archive-tar: stream large blobs to tar fileLibravatar Nguyễn Thái Ngọc Duy1-5/+51
t5000 verifies output while t1050 makes sure the command always respects core.bigfilethreshold Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-03archive: delegate blob reading to backendLibravatar Nguyễn Thái Ngọc Duy1-4/+21
archive-tar.c and archive-zip.c now perform conversion check, with help of sha1_file_to_archive() from archive.c This gives backends more freedom in dealing with (streaming) large blobs. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-03archive-tar: unindent write_tar_entry by one levelLibravatar Nguyễn Thái Ngọc Duy1-31/+25
It's used to be if (!sha1) { ... } else if (!path) { ... } else { ... } Now that the first two blocks are no-op. We can remove the if/else skeleton and put the else block back by one indent level. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-03archive-tar: turn write_tar_entry into blob-writing onlyLibravatar Nguyễn Thái Ngọc Duy1-26/+52
Before this patch write_tar_entry() can: - write global header by write_global_extended_header() calling write_tar_entry with with both sha1 and path == NULL - write extended header for symlinks, by write_tar_entry() calling itself with sha1 != NULL and path == NULL - write a normal blob. In this case both sha1 and path are valid. After this patch, the first two call sites are modified to write the header without calling write_tar_entry(). The function is now for writing blobs only. This simplifies handling when write_tar_entry() learns about large blobs. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22upload-archive: allow user to turn off filtersLibravatar Jeff King1-1/+10
Some tar filters may be very expensive to run, so sites do not want to expose them via upload-archive. This patch lets users configure tar.<filter>.remote to turn them off. By default, gzip filters are left on, as they are about as expensive as creating zip archives. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22archive: provide builtin .tar.gz filterLibravatar Jeff King1-0/+2
This works exactly as if the user had configured it via: [tar "tgz"] command = gzip -cn [tar "tar.gz"] command = gzip -cn but since it is so common, it's convenient to have it builtin without the user needing to do anything. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22archive: implement configurable tar filtersLibravatar Jeff King1-1/+106
It's common to pipe the tar output produce by "git archive" through gzip or some other compressor. Locally, this can easily be done by using a shell pipe. When requesting a remote archive, though, it cannot be done through the upload-archive interface. This patch allows configurable tar filters, so that one could define a "tar.gz" format that automatically pipes tar output through gzip. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22archive: pass archiver struct to write_archive callbackLibravatar Jeff King1-1/+2
The current archivers are very static; when you are in the write_tar_archive function, you know you are writing a tar. However, to facilitate runtime-configurable archivers that will share a common write function we need to tell the function which archiver was used. As a convenience, we also provide an opaque data pointer in the archiver struct so that individual archivers can put something useful there when they register themselves. Technically they could just use the "name" field to look in an internal map of names to data, but this is much simpler. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22archive: refactor list of archive formatsLibravatar Jeff King1-3/+13
Most of the tar and zip code was nicely split out into two abstracted files which knew only about their specific formats. The entry point to this code was a single "write archive" function. However, as these basic formats grow more complex (e.g., by handling multiple file extensions and format names), a static list of the entry point functions won't be enough. Instead, let's provide a way for the tar and zip code to tell the main archive code what they support by registering archiver names and functions. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22archive-tar: don't reload default config optionsLibravatar Jeff King1-1/+1
We load our own tar-specific config, and then chain to git_default_config. This is pointless, as our caller should already have loaded the default config. It also introduces a needless inconsistency with the zip archiver, which does not look at the config files at all (and therefore relies on the caller to have loaded config). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-08archive-tar.c: squelch a type mismatch warningLibravatar Junio C Hamano1-1/+1
On some systems, giving a value of type time_t to printf "%lo" that expects an unsigned long would give a type mismatch warning. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-12Replace calls to strbuf_init(&foo, 0) with STRBUF_INIT initializerLibravatar Brandon Casey1-4/+2
Many call sites use strbuf_init(&foo, 0) to initialize local strbuf variable "foo" which has not been accessed since its declaration. These can be replaced with a static initialization using the STRBUF_INIT macro which is just as readable, saves a function call, and takes up fewer lines. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-07-19archive: remove unused headersLibravatar René Scharfe1-2/+0
Remove obsolete #includes. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-15archive: centralize archive entry writingLibravatar René Scharfe1-79/+37
Add the exported function write_archive_entries() to archive.c, which uses the new ability of read_tree_recursive() to pass a context pointer to its callback in order to centralize previously duplicated code. The new callback function write_archive_entry() does the work that every archiver backend needs to do: loading file contents, entering subdirectories, handling file attributes, constructing the full path of the entry. All that done, it calls the backend specific write_archive_entry_fn_t function. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-15archive: add baselen member to struct archiver_argsLibravatar René Scharfe1-5/+3
Calculate the length of base and save it in a new member of struct archiver_args. This way we don't have to compute it in each of the format backends. Note: parse_archive_args() guarantees that ->base won't ever be NULL. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-15add context pointer to read_tree_recursive()Libravatar René Scharfe1-5/+6
Add a pointer parameter to read_tree_recursive(), which is passed to the callback function. This allows callers of read_tree_recursive() to share data with the callback without resorting to global variables. All current callers pass NULL. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-09Teach new attribute 'export-ignore' to git-archiveLibravatar René Scharfe1-0/+2
Paths marked with this attribute are not output to git-archive output. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-14Provide git_config with a callback-data parameterLibravatar Johannes Schindelin1-3/+3
git_config() only had a function parameter, but no callback data parameter. This assumes that all callback functions only modify global variables. With this patch, every callback gets a void * parameter, and it is hoped that this will help the libification effort. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-10git-archive: ignore prefix when checking file attributeLibravatar René Scharfe1-2/+4
Ulrik Sverdrup noticed that git-archive doesn't correctly apply the attribute export-subst when the option --prefix is given, too. When it checked if a file has the attribute turned on, git-archive would try to look up the full path -- including the prefix -- in .gitattributes. That's wrong, as the prefix doesn't need to have any relation to any existing directories, tracked or not. This patch makes git-archive ignore the prefix when looking up if value of the attribute export-subst for a file. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11archive-tar.c: guard config parser from value=NULLLibravatar Junio C Hamano1-1/+1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-20Fix the expansion pattern of the pseudo-static path buffer.Libravatar Pierre Habouzit1-3/+2
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
2007-09-16Now that cache.h needs strbuf.h, remove useless includes.Libravatar Pierre Habouzit1-1/+0
Signed-off-by: Pierre Habouzit <madcoder@debian.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-10Strbuf API extensions and fixes.Libravatar Pierre Habouzit1-2/+2
* Add strbuf_rtrim to remove trailing spaces. * Add strbuf_insert to insert data at a given position. * Off-by one fix in strbuf_addf: strbuf_avail() does not counts the final \0 so the overflow test for snprintf is the strict comparison. This is not critical as the growth mechanism chosen will always allocate _more_ memory than asked, so the second test will not fail. It's some kind of miracle though. * Add size extension hints for strbuf_init and strbuf_read. If 0, default applies, else: + initial buffer has the given size for strbuf_init. + first growth checks it has at least this size rather than the default 8192. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-10Merge branch 'master' into ph/strbufLibravatar Junio C Hamano1-1/+4
* master: archive - leakfix for format_subst() Make --no-thin the default in git-push to save server resources fix doc for --compression argument to pack-objects git-tag -s must fail if gpg cannot sign the tag. git-svn: understand grafts when doing dcommit git-diff: don't squelch the new SHA1 in submodule diffs Define NO_MEMMEM on Darwin as it lacks the function git-svn: fix "Malformed network data" with svn:// servers (cvs|svn)import: Ask git-tag to overwrite old tags. git-rebase: fix -C option git-rebase: support --whitespace=<option> Documentation / grammer nit archive: rename attribute specfile to export-subst archive: specfile syntax change: "$Format:%PLCHLDR$" instead of just "%PLCHLDR" (take 2) add memmem() Remove unused function convert_sha1_file() archive: specfile support (--pretty=format: in archive files) Export format_commit_message()
2007-09-06Simplify strbuf uses in archive-tar.c using strbuf APILibravatar Pierre Habouzit1-49/+16
This is just cleaner way to deal with strbufs, using its API rather than reinventing it in the module (e.g. strbuf_append_string is just the plain strbuf_addstr function, and it was used to perform what strbuf_addch does anyways). Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-06Rework strbuf API and semantics.Libravatar Pierre Habouzit1-1/+1
The gory details are explained in strbuf.h. The change of semantics this patch enforces is that the embeded buffer has always a '\0' character after its last byte, to always make it a C-string. The offs-by-one changes are all related to that very change. A strbuf can be used to store byte arrays, or as an extended string library. The `buf' member can be passed to any C legacy string function, because strbuf operations always ensure there is a terminating \0 at the end of the buffer, not accounted in the `len' field of the structure. A strbuf can be used to generate a string/buffer whose final size is not really known, and then "strbuf_detach" can be used to get the built buffer, and keep the wrapping "strbuf" structure usable for further work again. Other interesting feature: strbuf_grow(sb, size) ensure that there is enough allocated space in `sb' to put `size' new octets of data in the buffer. It helps avoiding reallocating data for nothing when the problem the strbuf helps to solve has a known typical size. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-03archive: specfile support (--pretty=format: in archive files)Libravatar René Scharfe1-1/+4
Add support for a new attribute, specfile. Files marked as being specfiles are expanded by git-archive when they are written to an archive. It has no effect on worktree files. The same placeholders as those for the option --pretty=format: of git-log et al. can be used. The attribute is useful for creating auto-updating specfiles. It is limited by the underlying function format_commit_message(), though. E.g. currently there is no placeholder for git-describe like output, and expanded specfiles can't contain NUL bytes. That can be fixed in format_commit_message() later and will then benefit users of git-log, too. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-05-21rename dirlink to gitlink.Libravatar Martin Waitz1-2/+2
Unify naming of plumbing dirlink/gitlink concept: git ls-files -z '*.[ch]' | xargs -0 perl -pi -e 's/dirlink/gitlink/g;' -e 's/DIRLNK/GITLINK/g;' Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-18git-archive: convert archive entries like checkouts doLibravatar René Scharfe1-7/+9
As noted by Johan Herland, git-archive is a kind of checkout and needs to apply any checkout filters that might be configured. This patch adds the convenience function convert_sha1_file which returns a buffer containing the object's contents, after converting, if necessary (i.e. it's a combination of read_sha1_file and convert_to_working_tree). Direct calls to read_sha1_file in git-archive are then replaced by calls to convert_sha1_file. Since convert_sha1_file expects its path argument to be NUL-terminated -- a convention it inherits from convert_to_working_tree -- the patch also changes the path handling in archive-tar.c to always NUL-terminate the string. It used to solely rely on the len field of struct strbuf before. archive-zip.c already NUL-terminates the path and thus needs no such change. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-12git-archive: don't die when repository uses subprojectsLibravatar Lars Hjemli1-2/+2
Both archive-tar and archive-zip needed to be taught about subprojects. The tar function died when trying to read the subproject commit object, while the zip function reported "unsupported file mode". This fixes both by representing the subproject as an empty directory. Signed-off-by: Lars Hjemli <hjemli@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-27convert object type handling from a string to a numberLibravatar Nicolas Pitre1-2/+2
We currently have two parallel notation for dealing with object types in the code: a string and a numerical value. One of them is obviously redundent, and the most used one requires more stack space and a bunch of strcmp() all over the place. This is an initial step for the removal of the version using a char array found in object reading code paths. The patch is unfortunately large but there is no sane way to split it in smaller parts without breaking the system. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-06Set default "tar" umask to 002 and owner.group to root.rootLibravatar René Scharfe1-4/+3
In order to make the generated tar files more friendly to users who extract them as root using GNU tar and its implied -p option, change the default umask to 002 and change the owner name and group name to root. This ensures that a) the extracted files and directories are not world-writable and b) that they belong to user and group root. Before they would have been assigned to a user and/or group named git if it existed. This also answers the question in the removed comment: uid=0, gid=0, uname=root, gname=root is exactly what we want. Normal users who let tar apply their umask while extracting are only affected if their umask allowed the world to change their files (e.g. a umask of zero). This case is so unlikely and strange that we don't need to support it. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20simplify inclusion of system header files.Libravatar Junio C Hamano1-1/+0
This is a mechanical clean-up of the way *.c files include system header files. (1) sources under compat/, platform sha-1 implementations, and xdelta code are exempt from the following rules; (2) the first #include must be "git-compat-util.h" or one of our own header file that includes it first (e.g. config.h, builtin.h, pkt-line.h); (3) system headers that are included in "git-compat-util.h" need not be included in individual C source files. (4) "git-compat-util.h" does not have to include subsystem specific header files (e.g. expat.h). Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-24git-tar-tree: Move code for git-archive --format=tar to archive-tar.cLibravatar Rene Scharfe1-0/+325
This patch doesn't change any functionality, it only moves code around. It makes seeing the few remaining lines of git-tar-tree code easier. ;-) Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>