Граф коммитов

153 Коммитов

Автор SHA1 Сообщение Дата
Junio C Hamano 762655010d Merge branch 'js/async-thread'
* js/async-thread:
  fast-import: die_nicely() back to vsnprintf (reverts part of ebaa79f)
  Enable threaded async procedures whenever pthreads is available
  Dying in an async procedure should only exit the thread, not the process.
  Reimplement async procedures using pthreads
  Windows: more pthreads functions
  Fix signature of fcntl() compatibility dummy
  Make report() from usage.c public as vreportf() and use it.
  Modernize t5530-upload-pack-error.

Conflicts:
	http-backend.c
2010-06-21 06:02:45 -07:00
Junio C Hamano 8d676d85f7 Merge branch 'gv/portable'
* gv/portable:
  test-lib: use DIFF definition from GIT-BUILD-OPTIONS
  build: propagate $DIFF to scripts
  Makefile: Tru64 portability fix
  Makefile: HP-UX 10.20 portability fixes
  Makefile: HPUX11 portability fixes
  Makefile: SunOS 5.6 portability fix
  inline declaration does not work on AIX
  Allow disabling "inline"
  Some platforms lack socklen_t type
  Make NO_{INET_NTOP,INET_PTON} configured independently
  Makefile: some platforms do not have hstrerror anywhere
  git-compat-util.h: some platforms with mmap() lack MAP_FAILED definition
  test_cmp: do not use "diff -u" on platforms that lack one
  fixup: do not unconditionally disable "diff -u"
  tests: use "test_cmp", not "diff", when verifying the result
  Do not use "diff" found on PATH while building and installing
  enums: omit trailing comma for portability
  Makefile: -lpthread may still be necessary when libc has only pthread stubs
  Rewrite dynamic structure initializations to runtime assignment
  Makefile: pass CPPFLAGS through to fllow customization

Conflicts:
	Makefile
	wt-status.h
2010-06-21 06:02:44 -07:00
Junio C Hamano 44e08b003d Merge branch 'js/try-to-free-stackable'
* js/try-to-free-stackable:
  Do not call release_pack_memory in malloc wrappers when GIT_TRACE is used
  Have set_try_to_free_routine return the previous routine
2010-06-13 11:21:21 -07:00
Junio C Hamano bdc4204119 Merge branch 'maint'
* maint:
  git-compat-util.h: use apparently more common __sgi macro to detect SGI IRIX
  Documentation: A...B shortcut for checkout and rebase
  Documentation/pretty-{formats,options}: better reference for "format:<string>"
2010-06-02 10:17:26 -07:00
Gary V. Vaughan 761a889a97 git-compat-util.h: use apparently more common __sgi macro to detect SGI IRIX
IRIX 6.5.26m does not define the 'sgi' macro, but it does define an '__sgi'
macro.  Since later IRIX versions (6.5.29m) define both macros, and since
an underscore prefixed macro is preferred anyway, use '__sgi' to detect
compilation on SGI IRIX.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 10:03:53 -07:00
Gary V. Vaughan fcf3a21acc git-compat-util.h: some platforms with mmap() lack MAP_FAILED definition
Some platforms with mmap() lack MAP_FAILED definition.

Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-31 17:36:27 -07:00
Junio C Hamano 455bda993c Merge branch 'cw/maint-exec-defpath'
* cw/maint-exec-defpath:
  autoconf: Check if <paths.h> exists and set HAVE_PATHS_H
  exec_cmd.c: replace hard-coded path list with one from <paths.h>
2010-05-21 04:02:17 -07:00
Junio C Hamano ea5f75a64a Merge branch 'np/malloc-threading'
* np/malloc-threading:
  Thread-safe xmalloc and xrealloc needs a recursive mutex
  Make xmalloc and xrealloc thread-safe
2010-05-21 04:02:16 -07:00
Junio C Hamano 3ecaa3b6a5 Merge branch 'pc/remove-warn'
* pc/remove-warn:
  Remove a redundant errno test in a usage of remove_path
  Introduce remove_or_warn function
  Implement the rmdir_or_warn function
  Generalise the unlink_or_warn function
2010-05-08 22:32:59 -07:00
Johannes Sixt 851c34b04e Have set_try_to_free_routine return the previous routine
This effectively requires from the callers of set_try_to_free_routine to
treat the try-to-free-routines as a stack.

We will need this for the next patch where the only current caller cannot
depend on that the previously set routine was the default routine.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-08 22:27:54 -07:00
Chris Webb cb6a22c076 exec_cmd.c: replace hard-coded path list with one from <paths.h>
The default executable path list used by exec_cmd.c is hard-coded to
be "/usr/local/bin:/usr/bin:/bin".  Use an appropriate value for the
system from <paths.h> when available.

Add HAVE_PATHS_H make variables and enable it on Linux, FreeBSD,
NetBSD, OpenBSD and GNU where it is known to exist for now. Somebody
else may want to do an autoconf support later.

Signed-off-by: Chris Webb <chris@arachsys.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-15 12:07:51 -07:00
Junio C Hamano 16b8a3e4b9 Merge branch 'jn/merge-diff3-label'
* jn/merge-diff3-label:
  merge-recursive: add a label for ancestor
  cherry-pick, revert: add a label for ancestor
  revert: clarify label on conflict hunks
  compat: add mempcpy()
  checkout -m --conflict=diff3: add a label for ancestor
  merge_trees(): add ancestor label parameter for diff3-style output
  merge_file(): add comment explaining behavior wrt conflict style
  checkout --conflict=diff3: add a label for ancestor
  ll_merge(): add ancestor label parameter for diff3-style output
  merge-file --diff3: add a label for ancestor
  xdl_merge(): move file1 and file2 labels to xmparam structure
  xdl_merge(): add optional ancestor label to diff3-style output
  tests: document cherry-pick behavior in face of conflicts
  tests: document format of conflicts from checkout -m

Conflicts:
	builtin/revert.c
2010-04-03 12:28:41 -07:00
YONETANI Tomokazu 6555b196f0 Fix _XOPEN_SOURCE problem on DragonFly
As on FreeBSD, defining _XOPEN_SOURCE to 600 on DragonFly BSD 2.4-RELEASE
or later hides symbols from programs, which leads to implicit declaration
of functions, making the return value to be assumed an int.  On architectures
where sizeof(int) < sizeof(void *), this can cause unexpected behaviors or
crashes.
This change won't affect other OSes unless they define __DragonFly__ macro,
or older versions of DragonFly BSD as the current git code doesn't rely on
the features only available with _XOPEN_SOURCE set to 600 on DragonFly.

Signed-off-by: YONETANI Tomokazu <y0netan1@dragonflybsd.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-02 21:24:30 -07:00
Peter Collingbourne 80d706afed Introduce remove_or_warn function
This patch introduces the remove_or_warn function which is a
generalised version of the {unlink,rmdir}_or_warn functions.  It takes
an additional parameter indicating the mode of the file to be removed.

The patch also modifies certain functions to use remove_or_warn
where appropriate, and adds a test case for a bug fixed by the use
of remove_or_warn.

Signed-off-by: Peter Collingbourne <peter@pcc.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-28 09:53:04 -07:00
Peter Collingbourne d1723296af Implement the rmdir_or_warn function
This patch implements an rmdir_or_warn function (like unlink_or_warn
but for directories) that uses the generalised warning code in
warn_if_unremovable.

Signed-off-by: Peter Collingbourne <peter@pcc.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-28 09:53:01 -07:00
Nicolas Pitre a9a746364b Make xmalloc and xrealloc thread-safe
By providing a hook for the routine responsible for trying to free some
memory on malloc failure, we can ensure that the  called routine is
protected by the appropriate locks when threads are in play.

The obvious offender here was pack-objects which was calling xmalloc()
within threads while release_pack_memory() is not thread safe.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-24 14:15:09 -07:00
Jonathan Nieder 137c6eaa88 compat: add mempcpy()
The mempcpy() function was added in glibc 2.1.  It is quite handy, so
add an implementation for cross-platform use.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-20 20:36:11 -07:00
Johannes Sixt ebaa79f462 Make report() from usage.c public as vreportf() and use it.
There exist already a number of static functions named 'report', therefore,
the function name was changed.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-07 00:37:35 -08:00
Junio C Hamano a0075d9e6a Merge branch 'il/maint-xmallocz'
* il/maint-xmallocz:
  Fix integer overflow in unpack_compressed_entry()
  Fix integer overflow in unpack_sha1_rest()
  Fix integer overflow in patch_delta()
  Add xmallocz()
2010-01-27 14:56:38 -08:00
Ilari Liusvaara 5bf9219d01 Add xmallocz()
Add routine for allocating NUL-terminated memory block without risking
integer overflow in addition of +1 for NUL byte.

[jc: with suggestion from Bill Lear]

Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-26 12:57:53 -08:00
Ramsay Jones aba7dea83b msvc: Add a definition of NORETURN compatible with msvc compiler
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Acked-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-22 16:35:42 -08:00
Junio C Hamano fcb2a7e4a3 Merge branch 'ap/merge-backend-opts'
* ap/merge-backend-opts:
  Document that merge strategies can now take their own options
  Extend merge-subtree tests to test -Xsubtree=dir.
  Make "subtree" part more orthogonal to the rest of merge-recursive.
  pull: Fix parsing of -X<option>
  Teach git-pull to pass -X<option> to git-merge
  git merge -X<option>
  git-merge-file --ours, --theirs

Conflicts:
	git-compat-util.h
2010-01-20 20:28:50 -08:00
Junio C Hamano 56eb8b43eb Merge branch 'jc/symbol-static'
* jc/symbol-static:
  date.c: mark file-local function static
  Replace parse_blob() with an explanatory comment
  symlinks.c: remove unused functions
  object.c: remove unused functions
  strbuf.c: remove unused function
  sha1_file.c: remove unused function
  mailmap.c: remove unused function
  utf8.c: mark file-local function static
  submodule.c: mark file-local function static
  quote.c: mark file-local function static
  remote-curl.c: mark file-local function static
  read-cache.c: mark file-local functions static
  parse-options.c: mark file-local function static
  entry.c: mark file-local function static
  http.c: mark file-local functions static
  pretty.c: mark file-local function static
  builtin-rev-list.c: mark file-local function static
  bisect.c: mark file-local function static
2010-01-20 14:37:25 -08:00
Junio C Hamano 23418ea95f date.c: mark file-local function static
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 14:37:17 -08:00
Avery Pennarun 8cc5b29065 git merge -X<option>
Teach "-X <option>" command line argument to "git merge" that is passed to
strategy implementations.  "ours" and "theirs" autoresolution introduced
by the previous commit can be asked to the recursive strategy.

Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-17 22:45:06 -08:00
Nguyễn Thái Ngọc Duy eb80042c6a Add missing #include to support TIOCGWINSZ on Solaris
On Linux TIOCGWINSZ is defined somehwere in ioctl.h, which is already
included. On Solaris we also need to include termios.h. Without this
term_columns() in help.c will think TIOCGWINSZ is not supported and
always return 80 columns.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-11 19:55:33 -08:00
Jonathan Nieder 64b1cb74f8 Introduce usagef() that takes a printf-style format
Some new callers would want to use printf-like formatting, when issuing
their usage messages.  An option is to change usage() itself also be like
printf(), which would make it similar to die() and warn().

But usage() is typically fixed, as opposed to die() and warn() that gives
diagnostics depending on the situation.  Indeed, the majority of strings
given by existing callsites to usage() are fixed strings.  If we were to
make usage() take printf-style format, they all need to be changed to have
"%s" as their first argument.

So instead, introduce usagef() so that limited number of callers can use
it.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-10 12:00:21 -08:00
Erik Faye-Lund 18660bc96e add NORETURN_PTR for function pointers
Some compilers (including at least MSVC and ARM RVDS) supports
NORETURN on function declarations, but not on function pointers.

This patch makes it possible to define NORETURN for these compilers,
by splitting the NORETURN macro into two - one for function
declarations and one for function pointers.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
2009-10-01 04:12:21 -04:00
Erik Faye-Lund a4f3131c07 increase portability of NORETURN declarations
Some compilers (including at least MSVC) support NORETURN
on function declarations, but only before the function-name.

This patch makes it possible to define NORETURN to something
meaningful for those compilers.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
2009-10-01 04:12:21 -04:00
Marius Storm-Olsen 435bdf8c7f Make usage of windows.h lean and mean
Centralize the include of windows.h in git-compat-util.h, turn on
WIN32_LEAN_AND_MEAN to avoid including plenty of other header files
which is not needed in Git. Also ensure we load winsock2.h first,
so we don't load the older winsock definitions at a later stage,
since they contain duplicate definitions.

When moving windows.h into git-compat-util.h, we need to protect
the definition of struct pollfd in mingw.h, since this file is used
by both MinGW and MSVC, and the latter defines this struct in
winsock2.h.

We need to keep the windows.h include in compat/win32.h, since its
shared by both MinGW and Cygwin, and we're not touching Cygwin in
this commit. The include in git-compat-util.h is protected with an
ifdef WIN32, which is not the case when compiling for Cygwin.

Signed-off-by: Marius Storm-Olsen <mstormo@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-18 20:00:42 -07:00
Frank Li d75f8e6131 Add platform files for porting to MSVC
Add msvc.c and msvc.h to build git under MSVC.

Signed-off-by: Frank Li <lznuaa@gmail.com>
Signed-off-by: Marius Storm-Olsen <mstormo@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-09-18 20:00:42 -07:00
Junio C Hamano 106a36509d Merge branch 'lt/block-sha1'
* lt/block-sha1:
  remove ARM and Mozilla SHA1 implementations
  block-sha1: guard gcc extensions with __GNUC__
  make sure byte swapping is optimal for git
  block-sha1: make the size member first in the context struct
2009-08-27 17:00:35 -07:00
Brandon Casey 044239b0a1 git-compat-util.h: remove superfluous test for __sun__
This 'ifndef' macro is entered only when __sun__ is not defined.  This test
will never fail since it is located inside of the 'else' branch of an 'if'
macro which tests whether __sun__ is defined.  It has had no effect since
the merge at 436f66b7.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-19 21:04:56 -07:00
Nicolas Pitre 51ea55190b make sure byte swapping is optimal for git
We rely on ntohl() and htonl() to perform byte swapping in many places.
However, some platforms have libraries providing really poor
implementations of those which might cause significant performance
issues, especially with the block-sha1 code.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-18 14:16:37 -07:00
Pierre Habouzit 98cb6f30f7 janitor: add DIV_ROUND_UP and use it.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-22 21:57:41 -07:00
Pierre Habouzit f630cfda88 refactor: use bitsizeof() instead of 8 * sizeof()
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-22 21:57:41 -07:00
Brandon Casey 9398b85994 git-compat-util.h: adjust for SGI IRIX 6.5
Don't define _XOPEN_SOURCE
Do    define _SGI_SOURCE

Defining _XOPEN_SOURCE prevents many of the common functions and macros
from being defined. _Not_ setting _XOPEN_SOURCE, and instead setting
_SGI_SOURCE, provides all of the XPG4, XPG5, BSD, POSIX functions and
declarations, _BUT_ provides a horribly broken snprintf(). SGI does have
a working snprintf(), but it is only provided when _NO_XOPEN5 evaluates
to zero, and this only happens if _XOPEN_SOURCE is defined which, as
mentioned above, prevents many other common functions and defines.

The broken snprintf will be worked around with SNPRINTF_RETURNS_BOGUS in
the Makefile in a later patch.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-10 23:50:29 -07:00
Junio C Hamano dd787c19c4 Merge branch 'tr/die_errno'
* tr/die_errno:
  Use die_errno() instead of die() when checking syscalls
  Convert existing die(..., strerror(errno)) to die_errno()
  die_errno(): double % in strerror() output just in case
  Introduce die_errno() that appends strerror(errno) to die()
2009-07-06 09:39:46 -07:00
Thomas Rast b875036e5a Introduce die_errno() that appends strerror(errno) to die()
There are many calls to die() that do, or should, report
strerror(errno) to indicate how the syscall they guard failed.
Introduce a small helper function for this case.

Note:

- POSIX says vsnprintf can modify errno in some unlikely cases, so we
  have to use errno early.

- We take some care to pass the original format to die_routine(), in
  case someone wants to call die_errno() with custom format
  characters.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27 11:14:53 -07:00
Junio C Hamano 436f66b7e9 Merge branch 'bc/solaris'
* bc/solaris:
  configure: test whether -lresolv is needed
  Makefile: insert SANE_TOOL_PATH to PATH before /bin or /usr/bin
  git-compat-util.h: avoid using c99 flex array feature with Sun compiler 5.8
  Makefile: add section for SunOS 5.7
  Makefile: introduce SANE_TOOL_PATH for prepending required elements to PATH
  Makefile: define __sun__ on SunOS
  git-compat-util.h: tweak the way _XOPEN_SOURCE is set on Solaris
  On Solaris choose the OLD_ICONV iconv() declaration based on the UNIX spec
  Makefile: add NEEDS_RESOLV to optionally add -lresolv to compile arguments
  Makefile: use /usr/ucb/install on SunOS platforms rather than ginstall

Conflicts:
	Makefile
2009-06-13 12:48:34 -07:00
Brandon Casey 203ee91fd2 git-compat-util.h: avoid using c99 flex array feature with Sun compiler 5.8
The Sun c99 compiler as recent as version 5.8 Patch 121016-06 2007/08/01
produces an error when compiling diff-delta.c.  This source file #includes
the delta.h header file which pre-declares a struct which is later defined
to contain a flex array member.  The Sun c99 compiler fails to compile
diff-delta.c and gives the following error:

  "diff-delta.c", line 314: identifier redeclared: create_delta
          current : function(pointer to const struct delta_index {unsigned long memsize, pointer to const void src_buf, unsigned long src_size, unsigned int hash_mask, array[-1] of pointer to struct index_entry {..} hash}, pointer to const void, unsigned long, pointer to unsigned long, unsigned long) returning pointer to void
          previous: function(pointer to const struct delta_index {unsigned long memsize, pointer to const void src_buf, unsigned long src_size, unsigned int hash_mask, array[-1] of pointer to struct index_entry {..} hash}, pointer to const void, unsigned long, pointer to unsigned long, unsigned long) returning pointer to void : "delta.h", line 44
  c99: acomp failed for diff-delta.c

So, avoid using this c99 feature when compiling with the Sun c compilers
version 5.8 and older (the most recent version tested).

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-08 21:16:18 -07:00
Brandon Casey 4cb18a49df git-compat-util.h: tweak the way _XOPEN_SOURCE is set on Solaris
On Solaris, when _XOPEN_EXTENDED is set, its header file forces the
programs to be XPG4v2, defeating any _XOPEN_SOURCE setting to say we are
XPG5 or XPG6.  Also on Solaris, XPG6 programs must be compiled with a c99
compiler, while non XPG6 programs must be compiled with a pre-c99 compiler.

So when compiling on Solaris, always refrain from setting _XOPEN_EXTENDED,
and then set _XOPEN_SOURCE to 600 or 500 based on whether a c99 compiler
is being used or not.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 13:21:10 -07:00
Junio C Hamano b11cf09043 Merge branch 'da/pretty-tempname'
* da/pretty-tempname:
  diff: generate pretty filenames in prep_temp_blob()
  compat: add a basename() compatibility function
  compat: add a mkstemps() compatibility function

Conflicts:
	Makefile
2009-06-03 00:50:05 -07:00
David Aguilar e1c0688692 compat: add a basename() compatibility function
Some systems such as Windows lack libgen.h so provide a
basename() implementation for cross-platform use.

This introduces the NO_LIBGEN_H construct to the Makefile
and autoconf scripts.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:57:59 -07:00
David Aguilar 0620b39b3b compat: add a mkstemps() compatibility function
mkstemps() is a BSD extension so provide an implementation
for cross-platform use.

Signed-off-by: David Aguilar <davvid@gmail.com>
Tested-by: Johannes Sixt <j6t@kdbg.org> (Windows)
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:56:44 -07:00
Junio C Hamano 30d8080ca7 Teach Solaris that _XOPEN_SOURCE=600 really menas XPG6
In git-compat-util.h, we do

    #define _XOPEN_SOURCE 600
    #define _XOPEN_SOURCE_EXTENDED 1

unless we are on BSD or SCO.

On OpenSolaris (200811), /usr/include/sys/feature_tests.h has this nice
table:

    Feature Test Macro				     Specification
    ------------------------------------------------  -------------
    _XOPEN_SOURCE                                         XPG3
    _XOPEN_SOURCE && _XOPEN_VERSION = 4                   XPG4
    _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED = 1           XPG4v2
    _XOPEN_SOURCE = 500                                   XPG5
    _XOPEN_SOURCE = 600  (or POSIX_C_SOURCE=200112L)      XPG6

Later in the same header, compilation with -c99 is made to fail if _XPG6 is
not set, like this:

    #if defined(_STDC_C99) && (defined(__XOPEN_OR_POSIX) && !defined(_XPG6))
    #error "Compiler or options invalid for pre-UNIX 03 X/Open applications \
            and pre-2001 POSIX applications"
    #elif ...

The problem is that they check things in an order that is inconvenient for
us.  When they see _XOPEN_SOURCE_EXTENDED, they declare that we are XPG4v2,
regardless of the value of _XOPEN_SOURCE.

To work around this problem, do not define _XOPEN_SOURCE_EXTENDED on
Sun's.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-22 22:52:00 -07:00
Alex Riesen fc71db39e0 Introduce an unlink(2) wrapper which gives warning if unlink failed
This seem to be a very common pattern in the current code.

The function prints a generic removal failure message, the file name
which failed and readable errno presentation. The function preserves
errno and always returns the value unlink(2) returned, but prints
no message for ENOENT, as it was the most often filtered out in the
code calling unlink. Besides, removing a file is anyway the purpose of
calling unlink.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-29 18:37:41 -07:00
Patrick Welche 9a695fbf38 NetBSD compilation fix
Similar to other BSD variants, it needs USE_ST_TIMESPEC.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-27 09:54:24 -07:00
Johannes Sixt 34779c535c Windows: Skip fstat/lstat optimization in write_entry()
Commit e4c72923 (write_entry(): use fstat() instead of lstat() when file
is open, 2009-02-09) introduced an optimization of write_entry().
Unfortunately, we cannot take advantage of this optimization on Windows
because there is no guarantee that the time stamps are updated before the
file is closed:

  "The only guarantee about a file timestamp is that the file time is
   correctly reflected when the handle that makes the change is closed."

(http://msdn.microsoft.com/en-us/library/ms724290(VS.85).aspx)

The failure of this optimization on Windows can be observed most easily by
running a 'git checkout' that has to update several large files. In this
case, 'git checkout' will report modified files, but infact only the
timestamps were incorrectly recorded in the index, as can be verified by a
subsequent 'git diff', which shows no change.

Dmitry Potapov reports the same fix needs on Cygwin; this commit contains
his updates for that.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-20 12:14:02 -07:00
Janos Laube b130a72b27 MinGW: implement mmap
Add USE_WIN32_MMAP which triggers the use of windows' native
file memory mapping functionality in git_mmap()/git_munmap() functions.

As git functions currently use mmap with MAP_PRIVATE set only, this
implementation supports only that mode for now.

On Windows, offsets for memory mapped files need to match the allocation
granularity. Take this into account when calculating the packed git-
windowsize and file offsets. At the moment, the only function which makes
use of offsets in conjunction with mmap is use_pack() in sha1-file.c.

Git fast-import's code path tries to map a portion of the temporary
packfile that exceeds the current filesize, i.e. offset+length is
greater than the filesize. The NO_MMAP code worked with that since pread()
just reads the file content until EOF and returns gracefully, while
MapViewOfFile() aborts the mapping and returns 'Access Denied'.
Working around that by determining the filesize and adjusting the length
parameter.

Signed-off-by: Janos Laube <janos.dev@gmail.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-18 19:23:04 -07:00