kernel/git - git - PowerEL Git System

Commit Graph

Author	SHA1	Message	Date
Junio C Hamano	7fb0eaa289	git_attr(): fix function signature The function took (name, namelen) as its arguments, but all the public callers wanted to pass a full string. Demote the counted-string interface to an internal API status, and allow public callers to just pass the string to the function. Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago
René Scharfe	d4c985653a	attr: plug minor memory leak Free the memory allocated for struct strbuf pathbuf when we're done. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Linus Torvalds	48fb7deb5b	Fix big left-shifts of unsigned char Shifting 'unsigned char' or 'unsigned short' left can result in sign extension errors, since the C integer promotion rules means that the unsigned char/short will get implicitly promoted to a signed 'int' due to the shift (or due to other operations). This normally doesn't matter, but if you shift things up sufficiently, it will now set the sign bit in 'int', and a subsequent cast to a bigger type (eg 'long' or 'unsigned long') will now sign-extend the value despite the original expression being unsigned. One example of this would be something like unsigned long size; unsigned char c; size += c << 24; where despite all the variables being unsigned, 'c << 24' ends up being a signed entity, and will get sign-extended when then doing the addition in an 'unsigned long' type. Since git uses 'unsigned char' pointers extensively, we actually have this bug in a couple of places. I may have missed some, but this is the result of looking at git grep '[^0-9 ][ ]<<[ ][a-z]' -- '.c' '.h' git grep '<<[ ]24' which catches at least the common byte cases (shifting variables by a variable amount, and shifting by 24 bits). I also grepped for just 'unsigned char' variables in general, and converted the ones that most obviously ended up getting implicitly cast immediately anyway (eg hash_name(), encode_85()). In addition to just avoiding 'unsigned char', this patch also tries to use a common idiom for the delta header size thing. We had three different variations on it: "& 0x7fUL" in one place (getting the sign extension right), and "& ~0x80" and "& 0x7f" in two other places (not getting it right). Apart from making them all just avoid using "unsigned char" at all, I also unified them to then use a simple "& 0x7f". I considered making a sparse extension which warns about doing implicit casts from unsigned types to signed types, but it gets rather complex very quickly, so this is just a hack. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Felipe Contreras	4b25d091ba	Fix a bunch of pointer declarations (codestyle) 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>	16 years ago
Nguyễn Thái Ngọc Duy	4191e80a3e	attr: add GIT_ATTR_INDEX "direction" This instructs attr mechanism, not to look into working .gitattributes at all. Needed by tools that does not handle working directory, such as "git archive". Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Junio C Hamano	06f33c1735	Read attributes from the index that is being checked out Traditionally we used .gitattributes file from the work tree if exists, and otherwise read from the index as a fallback. When switching to a branch that has an updated .gitattributes file, and entries in it give different attributes to other paths being checked out, we should instead read from the .gitattributes in the index. This breaks a use case of fixing incorrect entries in the .gitattributes in the work tree (without adding it to the index) and checking other paths out, though. $ edit .gitattributes ;# mark foo.dat as binary $ rm foo.dat $ git checkout foo.dat Signed-off-by: Junio C Hamano <gitster@pobox.com>	16 years ago
Dmitry Potapov	f66cf96d7c	Fix buffer overflow in prepare_attr_stack If PATH_MAX on your system is smaller than a path stored in the git repo, it may cause the buffer overflow in prepare_attr_stack. Signed-off-by: Dmitry Potapov <dpotapov@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
René Scharfe	2d35d556e2	Ignore .gitattributes in bare repositories Attributes can be specified at three different places: the internal table of default values, the file $GIT_DIR/info/attributes and files named .gitattributes in the work tree. Since bare repositories don't have a work tree, git should ignore any .gitattributes files there. This patch makes git do that, so the only way left for a user to specify attributes in a bare repository is the file info/attributes (in addition to changing the defaults and recompiling). In addition, git-check-attr is now allowed to run without a work tree. Like any user of the code in attr.c, it ignores the .gitattributes files when run in a bare repository. It can still read from info/attributes. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Matthew Ogilvie	82881b3823	gitattributes: Fix subdirectory attributes specified from root directory Signed-off-by: Matthew Ogilvie <mmogilvi_git@miniinfo.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Junio C Hamano	cf94ccda35	gitattributes: fix relative path matching There was an embarrassing pair of off-by-one miscounting that failed to match path "a/b/c" when "a/.gitattributes" tried to name it with relative path "b/c". This fixes it. Signed-off-by: Junio C Hamano <gitster@pobox.com>	17 years ago
Steffen Prohaska	d7b0a09316	attr: fix segfault in gitattributes parsing code git may segfault if gitattributes contains an invalid entry. A test is added to t0020 that triggers the segfault. The parsing code is fixed to avoid the crash. Signed-off-by: Steffen Prohaska <prohaska@zib.de> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>	17 years ago
Pierre Habouzit	182af8343c	Use xmemdupz() in many places. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Junio C Hamano	1a9d7e9b48	attr.c: read .gitattributes from index as well. This makes .gitattributes files to be read from the index when they are not checked out to the work tree. This is in line with the way we always allowed low-level tools to operate in sparsely checked out work tree in a reasonable way. It swaps the order of new file creation and converting the blob to work tree representation; otherwise when we are in the middle of checking out .gitattributes we would notice an empty but unwritten .gitattributes file in the work tree and will ignore the copy in the index. Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Junio C Hamano	a44131181a	attr.c: refactoring This splits out a common routine that parses a single line of attribute file and adds it to the attr_stack. It should not change any behaviour, other than attrs array in the attr_stack structure is now grown with alloc_nr() macro, instead of one by one, which relied on xrealloc() to give enough slack to be efficient enough. Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago
Alex Riesen	4629795816	Fix crash in t0020 (crlf conversion) Reallocated wrong size. Noticed on Ubuntu 7.04 probably because it has some malloc diagnostics in libc: "git-read-tree --reset -u HEAD" aborted in the test. Valgrind sped up the debugging greatly: took me 10 minutes. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	a5e92abde6	Fix funny types used in attribute value representation It was bothering me a lot that I abused small integer values casted to (void ) to represent non string values in gitattributes. This corrects it by making the type of attribute values (const char ), and using the address of a few statically allocated character buffer to denote true/false. Unset attributes are represented as having NULLs as their values. Added in-header documentation to explain how git_checkattr() routine should be called. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	515106fa13	Allow more than true/false to attributes. This allows you to define three values (and possibly more) to each attribute: true, false, and unset. Typically the handlers that notice and act on attribute values treat "unset" attribute to mean "do your default thing" (e.g. crlf that is unset would trigger "guess from contents"), so being able to override a setting to an unset state is actually useful. - If you want to set the attribute value to true, have an entry in .gitattributes file that mentions the attribute name; e.g. .o binary - If you want to set the attribute value explicitly to false, use '-'; e.g. .a -diff - If you want to make the attribute value _unset_, perhaps to override an earlier entry, use '!'; e.g. *.a -diff c.i.a !diff This also allows string values to attributes, with the natural syntax: attrname=attrvalue but you cannot use it, as nobody takes notice and acts on it yet. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	e4aee10a2e	Change attribute negation marker from '!' to '-'. At the same time, we do not want to allow arbitrary strings for attribute names, as we are likely to want to extend the syntax later. Allow only alnum, dash, underscore and dot for now. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	fc2d07b05f	Define a built-in attribute macro "binary". For binary files we would want to disable textual diff generation and automatic crlf conversion. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	f48fd68887	attribute macro support This adds "attribute macros" (for lack of better name). So far, we have low-level attributes such as crlf and diff, which are defined in operational terms --- setting or unsetting them on a particular path directly affects what is done to the path. For example, in order to decline diffs or crlf conversions on a binary blob, no diffs on PostScript files, and treat all other files normally, you would have something like these: * diff crlf .ps !diff proprietary.o !diff !crlf That is fine as the operation goes, but gets unwieldy rather rapidly, when we start adding more low-level attributes that are defined in operational terms. A near-term example of such an attribute would be 'merge-3way' which would control if git should attempt the usual 3-way file-level merge internally, or leave merging to a specialized external program of user's choice. When it is added, we do _not_ want to force the users to update the above to: diff crlf merge-3way .ps !diff proprietary.o !diff !crlf !merge-3way The way this patch solves this issue is to realize that the attributes the user is assigning to paths are not defined in terms of operations but in terms of what they are. All of the three low-level attributes usually make sense for most of the files that sane SCM users have git operate on (these files are typically called "text'). Only a few cases, such as binary blob, need exception to decline the "usual treatment given to text files" -- and people mark them as "binary". So this allows the $GIT_DIR/info/alternates and .gitattributes at the toplevel of the project to also specify attributes that assigns other attributes. The syntax is '[attr]' followed by an attribute name followed by a list of attribute names: [attr] binary !diff !crlf !merge-3way When "binary" attribute is set to a path, if the path has not got diff/crlf/merge-3way attribute set or unset by other rules, this rule unsets the three low-level attributes. It is expected that the user level .gitattributes will be expressed mostly in terms of attributes based on what the files are, and the above sample would become like this: (built-in attribute configuration) [attr] binary !diff !crlf !merge-3way diff crlf merge-3way (project specific .gitattributes) proprietary.o binary (user preference $GIT_DIR/info/attributes) .ps !diff There are a few caveats. As described above, you can define these macros only in $GIT_DIR/info/attributes and toplevel .gitattributes. * There is no attempt to detect circular definition of macro attributes, and definitions are evaluated from bottom to top as usual to fill in other attributes that have not yet got values. The following would work as expected: [attr] text diff crlf [attr] ps text !diff .ps ps while this would most likely not (I haven't tried): [attr] ps text !diff [attr] text diff crlf .ps ps * When a macro says "[attr] A B !C", saying that a path does not have attribute A does not let you tell anything about attributes B or C. That is, given this: [attr] text diff crlf [attr] ps text !diff .txt !ps path hello.txt, which would match ".txt" pattern, would have "ps" attribute set to zero, but that does not make text attribute of hello.txt set to false (nor diff attribute set to true). Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	8c701249d2	Teach 'diff' about 'diff' attribute. This makes paths that explicitly unset 'diff' attribute not to produce "textual" diffs from 'git-diff' family. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	35ebfd6a0c	Define 'crlf' attribute. This defines the semantics of 'crlf' attribute as an example. When a path has this attribute unset (i.e. '!crlf'), autocrlf line-end conversion is not applied. Eventually we would want to let users to build a pipeline of processing to munge blob data to filesystem format (and in the other direction) based on combination of attributes, and at that point the mechanism in convert_to_{git,working_tree}() that looks at 'crlf' attribute needs to be enhanced. Perhaps the existing 'crlf' would become the first step in the input chain, and the last step in the output chain. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	d0bfd026a8	Add basic infrastructure to assign attributes to paths This adds the basic infrastructure to assign attributes to paths, in a way similar to what the exclusion mechanism does based on $GIT_DIR/info/exclude and .gitignore files. An attribute is just a simple string that does not contain any whitespace. They can be specified in $GIT_DIR/info/attributes file, and .gitattributes file in each directory. Each line in these files defines a pattern matching rule. Similar to the exclusion mechanism, a later match overrides an earlier match in the same file, and entries from .gitattributes file in the same directory takes precedence over the ones from parent directories. Lines in $GIT_DIR/info/attributes file are used as the lowest precedence default rules. A line is either a comment (an empty line, or a line that begins with a '#'), or a rule, which is a whitespace separated list of tokens. The first token on the line is a shell glob pattern. The rest are names of attributes, each of which can optionally be prefixed with '!'. Such a line means "if a path matches this glob, this attribute is set (or unset -- if the attribute name is prefixed with '!'). For glob matching, the same "if the pattern does not have a slash in it, the basename of the path is matched with fnmatch(3) against the pattern, otherwise, the path is matched with the pattern with FNM_PATHNAME" rule as the exclusion mechanism is used. This does not define what an attribute means. Tying an attribute to various effects it has on git operation for paths that have it will be specified separately. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago

24 Commits (7b3bdbb335b6be938b4748e86a41357e51c97804)