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2017-05-09archive-tar: fix a sparse 'constant too large' warningLibravatar Ramsay Jones1-2/+2
Commit dddbad728c ("timestamp_t: a new data type for timestamps", 26-04-2017) introduced a new typedef 'timestamp_t', as a synonym for an unsigned long, which was used at the time to represent timestamps in git. A later commit 28f4aee3fb ("use uintmax_t for timestamps", 26-04-2017) changed the typedef to use an 'uintmax_t' for the timestamp representation type. When building on a 32-bit Linux system, sparse complains that a constant (USTAR_MAX_MTIME) used to detect a 'far-future mtime' timestamp, is too large; 'warning: constant 077777777777UL is so big it is unsigned long long' on lines 335 and 338 of archive-tar.c. Note that both gcc and clang only issue a warning if this constant is used in a context that requires an 'unsigned long' (rather than an uintmax_t). (Since TIME_MAX is no longer equal to 0xFFFFFFFF, even on a 32-bit system, the macro USTAR_MAX_MTIME is set to 077777777777UL, which cannot be represented as an 'unsigned long' constant). In order to suppress the warning, change the definition of the macro constant USTAR_MAX_MTIME to use an 'ULL' type suffix. In a similar vein, on systems which use a 64-bit representation of the 'unsigned long' type, the USTAR_MAX_SIZE constant macro is defined with the value 077777777777ULL. Although this does not cause any warning messages to be issued, it would be more appropriate for this constant to use an 'UL' type suffix rather than 'ULL'. Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-04-27timestamp_t: a new data type for timestampsLibravatar Johannes Schindelin1-2/+5
Git's source code assumes that unsigned long is at least as precise as time_t. Which is incorrect, and causes a lot of problems, in particular where unsigned long is only 32-bit (notably on Windows, even in 64-bit versions). So let's just use a more appropriate data type instead. In preparation for this, we introduce the new `timestamp_t` data type. By necessity, this is a very, very large patch, as it has to replace all timestamps' data type in one go. As we will use a data type that is not necessarily identical to `time_t`, we need to be very careful to use `time_t` whenever we interact with the system functions, and `timestamp_t` everywhere else. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-12Merge branch 'jk/big-and-future-archive-tar'Libravatar Junio C Hamano1-10/+5
A small code clean-up. * jk/big-and-future-archive-tar: archive-tar: make write_extended_header() void
2016-08-06archive-tar: make write_extended_header() voidLibravatar René Scharfe1-10/+5
The function write_extended_header() only ever returns 0. Simplify it and its caller by dropping its return value, like we did with write_global_extended_header() earlier. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-15archive-tar: huge offset and future timestamps would not work on 32-bitLibravatar Junio C Hamano1-0/+5
As we are not yet moving everything to size_t but still using ulong internally when talking about the size of object, platforms with 32-bit long will not be able to produce tar archive with 4GB+ file, and cannot grok 077777777777UL as a constant. Disable the extended header feature and do not test it on them. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-01archive-tar: drop return valueLibravatar Jeff King1-7/+4
We never do any error checks, and so never return anything but "0". Let's just drop this to simplify the code. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-01archive-tar: write extended headers for far-future mtimeLibravatar Jeff King1-3/+16
The ustar format represents timestamps as seconds since the epoch, but only has room to store 11 octal digits. To express anything larger, we need to use an extended header. This is exactly the same case we fixed for the size field in the previous commit, and the solution here follows the same pattern. This is even mentioned as an issue in f2f0267 (archive-tar: use xsnprintf for trivial formatting, 2015-09-24), but since it only affected things far in the future, it wasn't deemed worth dealing with. But note that my calculations claiming thousands of years were off there; because our xsnprintf produces a NUL byte, we only have until the year 2242 to fix this. Given that this is just around the corner (geologically speaking, anyway), and because it's easy to fix, let's just make it work. Unlike the previous fix for "size", where we had to write an individual extended header for each file, we can write one global header (since we have only one mtime for the whole archive). There's a slight bit of trickiness there. We may already be writing a global header with a "comment" field for the commit sha1. So we need to write our new field into the same header. To do this, we push the decision of whether to write such a header down into write_global_extended_header(), which will now assemble the header as it sees fit, and will return early if we have nothing to write (in practice, we'll only have a large mtime if it comes from a commit, but this makes it also work if you set your system clock ahead such that time() returns a huge value). Note that we don't (and never did) handle negative timestamps (i.e., before 1970). This would probably not be too hard to support in the same way, but since git does not support negative timestamps at all, I didn't bother here. After writing the extended header, we munge the timestamp in the ustar headers to the maximum-allowable size. This is wrong, but it's the least-wrong thing we can provide to a tar implementation that doesn't understand pax headers (it's also what GNU tar does). Helped-by: René Scharfe <l.s.r@web.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-01archive-tar: write extended headers for file sizes >= 8GBLibravatar Jeff King1-2/+29
The ustar format has a fixed-length field for the size of each file entry which is supposed to contain up to 11 bytes of octal-formatted data plus a NUL or space terminator. These means that the largest size we can represent is 077777777777, or 1 byte short of 8GB. The correct solution for a larger file, according to POSIX.1-2001, is to add an extended pax header, similar to how we handle long filenames. This patch does that, and writes zero for the size field in the ustar header (the last bit is not mentioned by POSIX, but it matches how GNU tar behaves with --format=pax). This should be a strict improvement over the current behavior, which is to die in xsnprintf with a "BUG". However, there's some interesting history here. Prior to f2f0267 (archive-tar: use xsnprintf for trivial formatting, 2015-09-24), we silently overflowed the "size" field. The extra bytes ended up in the "mtime" field of the header, which was then immediately written itself, overwriting our extra bytes. What that means depends on how many bytes we wrote. If the size was 64GB or greater, then we actually overflowed digits into the mtime field, meaning our value was effectively right-shifted by those lost octal digits. And this patch is again a strict improvement over that. But if the size was between 8GB and 64GB, then our 12-byte field held all of the actual digits, and only our NUL terminator overflowed. According to POSIX, there should be a NUL or space at the end of the field. However, GNU tar seems to be lenient here, and will correctly parse a size up 64GB (minus one) from the field. So sizes in this range might have just worked, depending on the implementation reading the tarfile. This patch is mostly still an improvement there, as the 8GB limit is specifically mentioned in POSIX as the correct limit. But it's possible that it could be a regression (versus the pre-f2f0267 state) if all of the following are true: 1. You have a file between 8GB and 64GB. 2. Your tar implementation _doesn't_ know about pax extended headers. 3. Your tar implementation _does_ parse 12-byte sizes from the ustar header without a delimiter. It's probably not worth worrying about such an obscure set of conditions, but I'm documenting it here just in case. Helped-by: René Scharfe <l.s.r@web.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-26archive-tar: convert snprintf to xsnprintfLibravatar Jeff King1-1/+1
Commit f2f0267 (archive-tar: use xsnprintf for trivial formatting, 2015-09-24) converted cases of "sprintf" to "xsnprintf", but accidentally left one as just "snprintf". This meant that we could silently truncate the resulting buffer instead of flagging an error. In practice, this is impossible to achieve, as we are formatting a ustar checksum, which can be at most 7 characters. But the point of xsnprintf is to document and check for "should be impossible" conditions; this site was just accidentally mis-converted during f2f0267. Noticed-by: Paul Green <Paul.Green@stratus.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-25archive-tar: use xsnprintf for trivial formattingLibravatar Jeff King1-13/+13
When we generate tar headers, we sprintf() values directly into a struct with the fixed-size header values. For the most part this is fine, as we are formatting small values (e.g., the octal format of "mode & 0x7777" is of fixed length). But it's still a good idea to use xsnprintf here. It communicates to readers what our expectation is, and it provides a run-time check that we are not overflowing the buffers. The one exception here is the mtime, which comes from the epoch time of the commit we are archiving. For sane values, this fits into the 12-byte value allocated in the header. But since git can handle 64-bit times, if I claim to be a visitor from the year 10,000 AD, I can overflow the buffer. This turns out to be harmless, as we simply overflow into the chksum field, which is then overwritten. This case is also best as an xsnprintf. It should never come up, short of extremely malformed dates, and in that case we are probably better off dying than silently truncating the date value (and we cannot expand the size of the buffer, since it is dictated by the ustar format). Our friends in the year 5138 (when we legitimately flip to a 12-digit epoch) can deal with that problem then. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-25convert trivial sprintf / strcpy calls to xsnprintfLibravatar Jeff King1-1/+1
We sometimes sprintf into fixed-size buffers when we know that the buffer is large enough to fit the input (either because it's a constant, or because it's numeric input that is bounded in size). Likewise with strcpy of constant strings. However, these sites make it hard to audit sprintf and strcpy calls for buffer overflows, as a reader has to cross-reference the size of the array with the input. Let's use xsnprintf instead, which communicates to a reader that we don't expect this to overflow (and catches the mistake in case we do). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-25archive-tar: fix minor indentation violationLibravatar Jeff King1-1/+1
This looks like a simple omission from 8539070 (archive-tar: unindent write_tar_entry by one level, 2012-05-03). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>