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* pack: move {,re}prepare_packed_git and approximate_object_countJonathan Tan2017-08-231-0/+1
| | | | | Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'nd/fopen-errors'Junio C Hamano2017-06-131-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We often try to open a file for reading whose existence is optional, and silently ignore errors from open/fopen; report such errors if they are not due to missing files. * nd/fopen-errors: mingw_fopen: report ENOENT for invalid file names mingw: verify that paths are not mistaken for remote nicknames log: fix memory leak in open_next_file() rerere.c: move error_errno() closer to the source system call print errno when reporting a system call error wrapper.c: make warn_on_inaccessible() static wrapper.c: add and use fopen_or_warn() wrapper.c: add and use warn_on_fopen_errors() config.mak.uname: set FREAD_READS_DIRECTORIES for Darwin, too config.mak.uname: set FREAD_READS_DIRECTORIES for Linux and FreeBSD clone: use xfopen() instead of fopen() use xfopen() in more places git_fopen: fix a sparse 'not declared' warning
| * wrapper.c: add and use fopen_or_warn()Nguyễn Thái Ngọc Duy2017-05-261-1/+1
| | | | | | | | | | | | | | | | | | | | When fopen() returns NULL, it could be because the given path does not exist, but it could also be some other errors and the caller has to check. Add a wrapper so we don't have to repeat the same error check everywhere. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | object: convert parse_object* to take struct object_idbrian m. carlson2017-05-081-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make parse_object, parse_object_or_die, and parse_object_buffer take a pointer to struct object_id. Remove the temporary variables inserted earlier, since they are no longer necessary. Transform all of the callers using the following semantic patch: @@ expression E1; @@ - parse_object(E1.hash) + parse_object(&E1) @@ expression E1; @@ - parse_object(E1->hash) + parse_object(E1) @@ expression E1, E2; @@ - parse_object_or_die(E1.hash, E2) + parse_object_or_die(&E1, E2) @@ expression E1, E2; @@ - parse_object_or_die(E1->hash, E2) + parse_object_or_die(E1, E2) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1.hash, E2, E3, E4, E5) + parse_object_buffer(&E1, E2, E3, E4, E5) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1->hash, E2, E3, E4, E5) + parse_object_buffer(E1, E2, E3, E4, E5) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* server-info: avoid calling fclose(3) twice in update_info_file()rs/misc-cppcheck-fixesRené Scharfe2017-04-171-3/+5
| | | | | | | | | | | | | | | If an error occurs when or after closing the stream we call fclose(3) again in the error handler. The second call can exhibit undefined behavior, so make sure to call fclose(3) at most once. Also avoid calling close(2) after fd has been successfully associated with the stream, as fclose(3) has become responsible for doing that beyond this point. Found with Cppcheck. Signed-off-by: Rene Scharfe <l.s.r@web.de> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* use QSORTRené Scharfe2016-09-291-1/+1
| | | | | | | | | Apply the semantic patch contrib/coccinelle/qsort.cocci to the code base, replacing calls of qsort(3) with QSORT. The resulting code is shorter and supports empty arrays with NULL pointers. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* server-info.c: use error_errno()Nguyễn Thái Ngọc Duy2016-05-091-1/+1
| | | | | Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Convert struct object to object_idbrian m. carlson2015-11-201-1/+1
| | | | | | | | | struct object is one of the major data structures dealing with object IDs. Convert it to use struct object_id instead of an unsigned char array. Convert get_object_hash to refer to the new member as well. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Jeff King <peff@peff.net>
* add_info_ref(): rewrite to take an object_id argumentMichael Haggerty2015-05-251-7/+5
| | | | | | Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* each_ref_fn: change to take an object_id parameterMichael Haggerty2015-05-251-1/+4
| | | | | | | | | | | | | | | | | | | | | Change typedef each_ref_fn to take a "const struct object_id *oid" parameter instead of "const unsigned char *sha1". To aid this transition, implement an adapter that can be used to wrap old-style functions matching the old typedef, which is now called "each_ref_sha1_fn"), and make such functions callable via the new interface. This requires the old function and its cb_data to be wrapped in a "struct each_ref_fn_sha1_adapter", and that object to be used as the cb_data for an adapter function, each_ref_fn_adapter(). This is an enormous diff, but most of it consists of simple, mechanical changes to the sites that call any of the "for_each_ref" family of functions. Subsequent to this change, the call sites can be rewritten one by one to use the new interface. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* update-server-info: create info/* with mode 0666jk/prune-packed-server-infoJeff King2015-01-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Prior to d38379e (make update-server-info more robust, 2014-09-13), we used a straight "fopen" to create the info/refs and objects/info/packs files, which creates the file using mode 0666 (less the default umask). In d38379e, we switched to creating the file with mkstemp to get a unique filename. But mkstemp also uses the more restrictive 0600 mode to create the file. This was an unintended side effect that we did not want, and causes problems when the repository is served by a different user than the one running update-server-info (it is not readable by a dumb http server running as `www`, for example). We can fix this by using git_mkstemp_mode and specifying 0666 to make sure that the umask is honored. Note that we could also say "just use core.sharedrepository", as we do call adjust_shared_perm on the result before renaming it into place. But that should not be necessary as long as everybody involved is using permissive umask to allow HTTP server to read necessary files. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* server-info: clean up after writing info/packsJeff King2014-09-151-0/+9
| | | | | | | | | | We allocate pack information in a static global list but never clean it up. This leaks memory, and means that calling update_server_info twice will generate a buggy file (it will have duplicate entries). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* make update-server-info more robustJeff King2014-09-151-45/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since "git update-server-info" may be called automatically as part of a push or a "gc --auto", we should be robust against two processes trying to update it simultaneously. However, we currently use a fixed tempfile, which means that two simultaneous writers may step on each other's toes and end up renaming junk into place. Let's instead switch to using a unique tempfile via mkstemp. We do not want to use a lockfile here, because it's OK for two writers to simultaneously update (one will "win" the rename race, but that's OK; they should be writing the same information). While we're there, let's clean up a few other things: 1. Detect write errors. Report them and abort the update if any are found. 2. Free path memory rather than leaking it (and clean up the tempfile when necessary). 3. Use the pathdup functions consistently rather than static buffers or manually calculated lengths. This last one fixes a potential overflow of "infofile" in update_info_packs (e.g., by putting large junk into $GIT_OBJECT_DIRECTORY). However, this overflow was probably not an interesting attack vector for two reasons: a. The attacker would need to control the environment to do this, in which case it was already game-over. b. During its setup phase, git checks that the directory actually exists, which means it is probably shorter than PATH_MAX anyway. Because both update_info_refs and update_info_packs share these same failings (and largely duplicate each other), this patch factors out the improved error-checking version into a helper function. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* update-server-info: Shorten read_pack_info_file()Ralf Thielow2010-07-191-3/+0
| | | | | | | | | | | The correct responses to a D and a T line in .git/objects/info/packs are the same, so combine their case arms. In both cases we already ‘goto’ out of the switch so while at it, remove a redundant ‘break’ to avoid yet another line of code. Signed-off-by: Ralf Thielow <ralf.thielow@googlemail.com> Reviewed-by: Jonathan Nieder <jrnieder <at> gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'ar/unlink-err'Junio C Hamano2009-05-181-1/+1
|\ | | | | | | | | | | | | * ar/unlink-err: print unlink(2) errno in copy_or_link_directory replace direct calls to unlink(2) with unlink_or_warn Introduce an unlink(2) wrapper which gives warning if unlink failed
| * replace direct calls to unlink(2) with unlink_or_warnAlex Riesen2009-04-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This helps to notice when something's going wrong, especially on systems which lock open files. I used the following criteria when selecting the code for replacement: - it was already printing a warning for the unlink failures - it is in a function which already printing something or is called from such a function - it is in a static function, returning void and the function is only called from a builtin main function (cmd_) - it is in a function which handles emergency exit (signal handlers) - it is in a function which is obvously cleaning up the lockfiles Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Fix a bunch of pointer declarations (codestyle)Felipe Contreras2009-05-011-2/+2
|/ | | | | | | Essentially; s/type* /type */ as per the coding guidelines. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Use git_pathdup instead of xstrdup(git_path(...))Alex Riesen2008-10-301-1/+1
| | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Don't access line[-1] for a zero-length "line" from fgets.Jim Meyering2008-01-041-1/+1
| | | | | | | | | | | | | | | A NUL byte at beginning of file, or just after a newline would provoke an invalid buf[-1] access in a few places. * builtin-grep.c (cmd_grep): Don't access buf[-1]. * builtin-pack-objects.c (get_object_list): Likewise. * builtin-rev-list.c (read_revisions_from_stdin): Likewise. * bundle.c (read_bundle_header): Likewise. * server-info.c (read_pack_info_file): Likewise. * transport.c (insert_packed_refs): Likewise. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Print the real filename that we failed to open.André Goddard Rosa2007-11-251-1/+1
| | | | | | | | | When we fail to open a temporary file to be renamed to something else, we reported the final filename, not the temporary file we failed to open. Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Fix core.sharedRepository = 2Johannes Schindelin2007-07-111-0/+2
| | | | | | | | | | | | | | | | | For compatibility reasons, "git init --shared=all" does not write "all" into the config, but a number. In the shared setup, you really have to support even older clients on the _same_ repository. But git_config_perm() did not pick up on it. Also, "git update-server-info" failed to pick up on the shared permissions. This patch fixes both issues, and adds a test to prove it. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Tested-by: martin f krafft <madduck@madduck.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Don't coredump on bad refs in update-server-info.Shawn O. Pearce2007-01-311-0/+2
| | | | | | | | | | | Apparently if we are unable to parse an object update-server-info coredumps, as it doesn't bother to check the return value of its call to parse_object. Instead of coredumping, skip the ref. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Tell between packed, unpacked and symbolic refs.Junio C Hamano2006-09-201-1/+1
| | | | | | | | | This adds a "int *flag" parameter to resolve_ref() and makes for_each_ref() family to call callback function with an extra "int flag" parameter. They are used to give two bits of information (REF_ISSYMREF and REF_ISPACKED) about the ref. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Add callback data to for_each_ref() family.Junio C Hamano2006-09-201-2/+2
| | | | | | | | | | | | | | | | | | | | This is a long overdue fix to the API for for_each_ref() family of functions. It allows the callers to specify a callback data pointer, so that the caller does not have to use static variables to communicate with the callback funciton. The updated for_each_ref() family takes a function of type int (*fn)(const char *, const unsigned char *, void *) and a void pointer as parameters, and calls the function with the name of the ref and its SHA-1 with the caller-supplied void pointer as parameters. The commit updates two callers, builtin-name-rev.c and builtin-pack-refs.c as an example. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Replace uses of strdup with xstrdup.Shawn Pearce2006-09-021-1/+1
| | | | | | | | | | | | | | | | Like xmalloc and xrealloc xstrdup dies with a useful message if the native strdup() implementation returns NULL rather than a valid pointer. I just tried to use xstrdup in new code and found it to be missing. However I expected it to be present as xmalloc and xrealloc are already commonly used throughout the code. [jc: removed the part that deals with last_XXX, which I am finding more and more dubious these days.] Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Remove TYPE_* constant macros and use object_type enums consistently.Linus Torvalds2006-07-121-1/+1
| | | | | | | | | | | | | | | This updates the type-enumeration constants introduced to reduce the memory footprint of "struct object" to match the type bits already used in the packfile format, by removing the former (i.e. TYPE_* constant macros) and using the latter (i.e. enum object_type) throughout the code for consistency. Eventually we can stop passing around the "type strings" entirely, and this will help - no confusion about two different integer enumeration. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Assorted typo fixesPavel Roskin2006-07-091-1/+1
| | | | Signed-off-by: Junio C Hamano <junkio@cox.net>
* Shrink "struct object" a bitLinus Torvalds2006-06-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This shrinks "struct object" by a small amount, by getting rid of the "struct type *" pointer and replacing it with a 3-bit bitfield instead. In addition, we merge the bitfields and the "flags" field, which incidentally should also remove a useless 4-byte padding from the object when in 64-bit mode. Now, our "struct object" is still too damn large, but it's now less obviously bloated, and of the remaining fields, only the "util" (which is not used by most things) is clearly something that should be eventually discarded. This shrinks the "git-rev-list --all" memory use by about 2.5% on the kernel archive (and, perhaps more importantly, on the larger mozilla archive). That may not sound like much, but I suspect it's more on a 64-bit platform. There are other remaining inefficiencies (the parent lists, for example, probably have horrible malloc overhead), but this was pretty obvious. Most of the patch is just changing the comparison of the "type" pointer from one of the constant string pointers to the appropriate new TYPE_xxx small integer constant. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info: skip empty lines.Junio C Hamano2005-12-211-1/+4
| | | | | | | Now we allow an empty line in objects/info/packs file, recognize that and stop complaining. Signed-off-by: Junio C Hamano <junkio@cox.net>
* objects/info/packs: work around bug in http-fetch.c::fetch_indices()Junio C Hamano2005-12-211-0/+1
| | | | | | | | | The code to fetch pack index files in deployed clients have a bug that causes it to ignore the pack file on the last line of objects/info/packs file, so append an empty line to work it around. Signed-off-by: Junio C Hamano <junkio@cox.net>
* qsort(): ptrdiff_t may be larger than intJunio C Hamano2005-12-081-1/+6
| | | | | | | | | This is a companion patch to e23eff8be92a2a2cb66b53deef020063cff285ed commit. The same logic, the same rationale that a comparison function that returns an int should not just compute a ptrdiff_t and return it. Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info.c: and two functions are not used anymore.Junio C Hamano2005-12-051-33/+0
| | | | Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info.c: use pack_local like everybody else.Junio C Hamano2005-12-051-4/+2
| | | | Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info: throw away T computation as well.Junio C Hamano2005-12-041-130/+3
| | | | | | | | | | | Again, dumb transport clients are too dumb to make use of the top objects information to make a choice among multiple packs, so computing these lines are useless for now. We could resurrect them if needed later. Also dumb transport clients presumably can do their own approximation by downloading idx files to see how relevant each pack is for their fetch. Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info: stop sorting packs by latest date.Junio C Hamano2005-12-041-36/+3
| | | | | | | This does not seem to buy us much, for the same reason as the previous change. Dumb clients are still too dumb. Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info.c: drop unused D lines.Junio C Hamano2005-12-041-110/+10
| | | | | | | | | We tried to compute pack interdependency information in $GIT_DIR/objects/info/packs, hoping that dumb transports would make use of it when choosing from multiple choice, but that has never materialized, so stop computing D lines for now. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Rework object refs tracking to reduce memory usageSergey Vlasov2005-11-151-7/+18
| | | | | | | | | | | | | Store pointers to referenced objects in a variable sized array instead of linked list. This cuts down memory usage of utilities which use object references; e.g., git-fsck-objects --full on the git.git repository consumes about 2 MB of memory tracked by Massif instead of 7 MB before the change. Object refs are still the biggest consumer of memory (57%), but the malloc overhead for a single block instead of a linked list is substantially smaller. Signed-off-by: Sergey Vlasov <vsu@altlinux.ru> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Be careful when dereferencing tags.Junio C Hamano2005-11-021-3/+4
| | | | | | | | | | One caller of deref_tag() was not careful enough to make sure what deref_tag() returned was not NULL (i.e. we found a tag object that points at an object we do not have). Fix it, and warn about refs that point at such an incomplete tag where needed. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Show peeled onion from upload-pack and server-info.Junio C Hamano2005-10-151-0/+7
| | | | | | | | | | | | | | | | | | | | | This updates git-ls-remote to show SHA1 names of objects that are referred by tags, in the "ref^{}" notation. This would make git-findtags (without -t flag) almost trivial. git-peek-remote . | sed -ne "s:^$target "'refs/tags/\(.*\)^{}$:\1:p' Also Pasky could do: git-ls-remote --tags $remote | sed -ne 's:\( refs/tags/.*\)^{}$:\1:p' to find out what object each of the remote tags refers to, and if he has one locally, run "git-fetch $remote tag $tagname" to automatically catch up with the upstream tags. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Reduce memory usage in git-update-server-info.robfitz@273k.net2005-10-081-0/+10
| | | | | | | | Modify parse_object_cheap() to also free all the entries from the tree data structures. Signed-off-by: Robert Fitzsimons <robfitz@273k.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
* Unoptimize info/refs creation.Junio C Hamano2005-09-151-26/+0
| | | | | | | | The code did not catch the case where you removed an existing ref without changing anything else. We are not talking about hundreds of refs anyway, so remove that optimization. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Retire info/rev-cacheJunio C Hamano2005-09-151-41/+0
| | | | | | | It was one of those things that were well intentioned but did not turn out to be useful in practice. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Revert "Replace zero-length array decls with []."Junio C Hamano2005-08-291-1/+1
| | | | | | | | | | | | | This reverts 6c5f9baa3bc0d63e141e0afc23110205379905a4 commit, whose change breaks gcc-2.95. Not that I ignore portability to compilers that are properly C99, but keeping compilation with GCC working is more important, at least for now. We would probably end up declaring with "name[1]" and teach the allocator to subtract one if we really aimed for portability, but that is left for later rounds. Signed-off-by: Junio C Hamano <junkio@cox.net>
* Replace zero-length array decls with [].Jason Riedy2005-08-231-1/+1
| | | | | | C99 denotes variable-sized members with [], not [0]. Signed-off-by: Jason Riedy <ejr@cs.berkeley.edu>
* [PATCH] Fix sparse warningsLinus Torvalds2005-08-011-1/+1
| | | | | | | | | | A few sparse warnings have crept in again since I checked last time: undeclared variables with global scope. Fix them by marking the private variables properly "static". Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
* server-info: do not complain if a tag points at a non-commit.Junio C Hamano2005-07-291-4/+11
| | | | | | Linux 2.6 tree has one of those tree tags. Signed-off-by: Junio C Hamano <junkio@cox.net>
* [PATCH] Add update-server-info.Junio C Hamano2005-07-231-0/+565
The git-update-server-info command prepares informational files to help clients discover the contents of a repository, and pull from it via a dumb transport protocols. Currently, the following files are produced. - The $repo/info/refs file lists the name of heads and tags available in the $repo/refs/ directory, along with their SHA1. This can be used by git-ls-remote command running on the client side. - The $repo/info/rev-cache file describes the commit ancestry reachable from references in the $repo/refs/ directory. This file is in an append-only binary format to make the server side friendly to rsync mirroring scheme, and can be read by git-show-rev-cache command. - The $repo/objects/info/pack file lists the name of the packs available, the interdependencies among them, and the head commits and tags contained in them. Along with the other two files, this is designed to help clients to make smart pull decisions. The git-receive-pack command is changed to invoke it at the end, so just after a push to a public repository finishes via "git push", the server info is automatically updated. In addition, building of the rev-cache file can be done by a standalone git-build-rev-cache command separately. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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