* [PATCH v3 2/4] Makefile: add support for "perllibdir"
2017-11-27 16:40 [PATCH v3 0/4] RUNTIME_PREFIX relocatable Git Dan Jacques
2017-11-27 16:40 ` [PATCH v3 1/4] Makefile: generate Perl header from template file Dan Jacques
@ 2017-11-27 16:40 ` Dan Jacques
2017-11-27 16:40 ` [PATCH v3 3/4] Makefile: add Perl runtime prefix support Dan Jacques
2017-11-27 16:40 ` [PATCH v3 4/4] exec_cmd: RUNTIME_PREFIX on some POSIX systems Dan Jacques
3 siblings, 0 replies; 12+ messages in thread
From: Dan Jacques @ 2017-11-27 16:40 UTC (permalink / raw)
To: git; +Cc: Johannes.Schindelin, avarab, dnj, gitster
Add the "perllibdir" Makefile variable, which allows the customization
of the Perl library installation path.
The Perl library installation path is currently left entirely to the
Perl Makefile implementation, either MakeMaker (default) or a fixed path
when NO_PERL_MAKEMAKER is enabled. This patch introduces "perllibdir", a
Makefile variable that can override that Perl module installation path.
As with some other Makefile variables, "perllibdir" may be either
absolute or relative. In the latter case, it is treated as relative to
"$(prefix)".
Add some incidental documentation to perl/Makefile.
Explicitly specifying an installation path is necessary for Perl runtime
prefix support, as runtime prefix resolution code must know in advance
where the Perl support modules are installed.
Signed-off-by: Dan Jacques <dnj@google.com>
---
Makefile | 18 +++++++++++++-----
perl/Makefile | 52 ++++++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 59 insertions(+), 11 deletions(-)
diff --git a/Makefile b/Makefile
index 5ad60a54c..7a2ed8857 100644
--- a/Makefile
+++ b/Makefile
@@ -462,6 +462,7 @@ ARFLAGS = rcs
# mandir
# infodir
# htmldir
+# perllibdir
# This can help installing the suite in a relocatable way.
prefix = $(HOME)
@@ -1721,6 +1722,7 @@ gitexecdir_SQ = $(subst ','\'',$(gitexecdir))
template_dir_SQ = $(subst ','\'',$(template_dir))
htmldir_relative_SQ = $(subst ','\'',$(htmldir_relative))
prefix_SQ = $(subst ','\'',$(prefix))
+perllibdir_SQ = $(subst ','\'',$(perllibdir))
gitwebdir_SQ = $(subst ','\'',$(gitwebdir))
SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
@@ -1955,17 +1957,22 @@ $(SCRIPT_PERL_GEN): perl/perl.mak
perl/perl.mak: perl/PM.stamp
-perl/PM.stamp: FORCE
+perl/PM.stamp: GIT-PERL-DEFINES FORCE
@$(FIND) perl -type f -name '*.pm' | sort >$@+ && \
+ cat GIT-PERL-DEFINES >>$@+ && \
$(PERL_PATH) -V >>$@+ && \
{ cmp $@+ $@ >/dev/null 2>/dev/null || mv $@+ $@; } && \
$(RM) $@+
-perl/perl.mak: GIT-CFLAGS GIT-PREFIX perl/Makefile perl/Makefile.PL
- $(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
-
PERL_HEADER_TEMPLATE = perl/header_fixed_prefix.pl.template
-PERL_DEFINES = $(PERL_PATH_SQ):$(PERLLIB_EXTRA_SQ)
+
+PERL_DEFINES := $(PERL_PATH_SQ) $(PERLLIB_EXTRA_SQ)
+PERL_DEFINES += $(NO_PERL_MAKEMAKER)
+PERL_DEFINES += $(perllibdir)
+
+perl/perl.mak: GIT-CFLAGS GIT-PREFIX perl/Makefile perl/Makefile.PL
+ $(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' \
+ prefix='$(prefix_SQ)' perllibdir='$(perllibdir_SQ)' $(@F)
$(SCRIPT_PERL_GEN): % : %.perl perl/perl.mak GIT-PERL-DEFINES GIT-PERL-HEADER GIT-VERSION-FILE
$(QUIET_GEN)$(RM) $@ $@+ && \
@@ -1979,6 +1986,7 @@ $(SCRIPT_PERL_GEN): % : %.perl perl/perl.mak GIT-PERL-DEFINES GIT-PERL-HEADER GI
chmod +x $@+ && \
mv $@+ $@
+PERL_DEFINES := $(subst $(space),:,$(PERL_DEFINES))
GIT-PERL-DEFINES: FORCE
@FLAGS='$(PERL_DEFINES)'; \
if test x"$$FLAGS" != x"`cat $@ 2>/dev/null`" ; then \
diff --git a/perl/Makefile b/perl/Makefile
index f657de20e..b2aeeb0d8 100644
--- a/perl/Makefile
+++ b/perl/Makefile
@@ -1,6 +1,22 @@
#
# Makefile for perl support modules and routine
#
+# This Makefile generates "perl.mak", which contains the actual build and
+# installation directions.
+#
+# PERL_PATH must be defined to be the path of the Perl interpreter to use.
+#
+# prefix must be defined as the Git installation prefix.
+#
+# localedir must be defined as the path to the locale data.
+#
+# perllibdir may be optionally defined to override the default Perl module
+# installation directory, which is relative to prefix. If perllibdir is not
+# absolute, it will be treated as relative to prefix.
+#
+# NO_PERL_MAKEMAKER may be defined to use a built-in Makefile generation method
+# instead of Perl MakeMaker.
+
makfile:=perl.mak
modules =
@@ -12,6 +28,16 @@ ifndef V
QUIET = @
endif
+# If a library directory is provided, and it is not an absolute path, resolve
+# it relative to prefix.
+ifneq ($(perllibdir),)
+ifneq ($(filter /%,$(firstword $(perllibdir))),)
+perllib_instdir = $(perllibdir)
+else
+perllib_instdir = $(prefix)/$(perllibdir)
+endif
+endif
+
all install instlibdir: $(makfile)
$(QUIET)$(MAKE) -f $(makfile) $@
@@ -25,7 +51,12 @@ clean:
$(makfile): PM.stamp
ifdef NO_PERL_MAKEMAKER
-instdir_SQ = $(subst ','\'',$(prefix)/lib)
+
+ifeq ($(perllib_instdir),)
+perllib_instdir = $(prefix)/lib
+endif
+
+instdir_SQ = $(subst ','\'',$(perllib_instdir))
modules += Git
modules += Git/I18N
@@ -42,7 +73,7 @@ modules += Git/SVN/Prompt
modules += Git/SVN/Ra
modules += Git/SVN/Utils
-$(makfile): ../GIT-CFLAGS Makefile
+$(makfile): ../GIT-CFLAGS ../GIT-PERL-DEFINES Makefile
echo all: private-Error.pm Git.pm Git/I18N.pm > $@
set -e; \
for i in $(modules); \
@@ -79,12 +110,21 @@ $(makfile): ../GIT-CFLAGS Makefile
echo ' cp private-Error.pm "$$(DESTDIR)$(instdir_SQ)/Error.pm"' >> $@
echo instlibdir: >> $@
echo ' echo $(instdir_SQ)' >> $@
+
else
-$(makfile): Makefile.PL ../GIT-CFLAGS
- $(PERL_PATH) $< PREFIX='$(prefix_SQ)' INSTALL_BASE='' --localedir='$(localedir_SQ)'
+
+# This may be empty if perllibdir was empty.
+instdir_SQ = $(subst ','\'',$(perllib_instdir))
+
+$(makfile): Makefile.PL ../GIT-CFLAGS ../GIT-PERL-DEFINES
+ $(PERL_PATH) $< \
+ PREFIX='$(prefix_SQ)' INSTALL_BASE='' \
+ LIB='$(instdir_SQ)' \
+ --localedir='$(localedir_SQ)'
+
endif
# this is just added comfort for calling make directly in perl dir
# (even though GIT-CFLAGS aren't used yet. If ever)
-../GIT-CFLAGS:
- $(MAKE) -C .. GIT-CFLAGS
+../GIT-CFLAGS ../GIT-PERL-DEFINES:
+ $(MAKE) -C .. $(@F)
--
2.15.0.chromium12
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v3 3/4] Makefile: add Perl runtime prefix support
2017-11-27 16:40 [PATCH v3 0/4] RUNTIME_PREFIX relocatable Git Dan Jacques
2017-11-27 16:40 ` [PATCH v3 1/4] Makefile: generate Perl header from template file Dan Jacques
2017-11-27 16:40 ` [PATCH v3 2/4] Makefile: add support for "perllibdir" Dan Jacques
@ 2017-11-27 16:40 ` Dan Jacques
2017-11-27 16:40 ` [PATCH v3 4/4] exec_cmd: RUNTIME_PREFIX on some POSIX systems Dan Jacques
3 siblings, 0 replies; 12+ messages in thread
From: Dan Jacques @ 2017-11-27 16:40 UTC (permalink / raw)
To: git; +Cc: Johannes.Schindelin, avarab, dnj, gitster
Add a new Makefile flag, RUNTIME_PREFIX_PERL, which, when enabled,
configures Perl scripts to locate the Git installation's Perl support
libraries by resolving against the script's path, rather than
hard-coding that path at build-time.
Enabling RUNTIME_PREFIX_PERL overrides the system-specific Perl script
installation path generated by MakeMaker to force installation into a
platform-neutral location, "<prefix>/share/perl5".
This change enables Git's Perl scripts to work when their Git installation
is relocated or moved to another system.
Signed-off-by: Dan Jacques <dnj@google.com>
---
Makefile | 40 +++++++++++++++++++++++++++++++++-
| 24 ++++++++++++++++++++
2 files changed, 63 insertions(+), 1 deletion(-)
create mode 100644 perl/header_runtime_prefix.pl.template
diff --git a/Makefile b/Makefile
index 7a2ed8857..a36815b49 100644
--- a/Makefile
+++ b/Makefile
@@ -425,6 +425,10 @@ all::
#
# to say "export LESS=FRX (and LV=-c) if the environment variable
# LESS (and LV) is not set, respectively".
+#
+# Define RUNTIME_PREFIX_PERL to configure Git's PERL commands to locate Git
+# support libraries relative to their filesystem path instead of hard-coding
+# it.
GIT-VERSION-FILE: FORCE
@$(SHELL_PATH) ./GIT-VERSION-GEN
@@ -485,6 +489,7 @@ pathsep = :
mandir_relative = $(patsubst $(prefix)/%,%,$(mandir))
infodir_relative = $(patsubst $(prefix)/%,%,$(infodir))
+sharedir_relative = $(patsubst $(prefix)/%,%,$(sharedir))
htmldir_relative = $(patsubst $(prefix)/%,%,$(htmldir))
export prefix bindir sharedir sysconfdir gitwebdir localedir
@@ -1967,7 +1972,38 @@ perl/PM.stamp: GIT-PERL-DEFINES FORCE
PERL_HEADER_TEMPLATE = perl/header_fixed_prefix.pl.template
PERL_DEFINES := $(PERL_PATH_SQ) $(PERLLIB_EXTRA_SQ)
-PERL_DEFINES += $(NO_PERL_MAKEMAKER)
+PERL_DEFINES += $(NO_PERL_MAKEMAKER) $(RUNTIME_PREFIX_PERL)
+
+# Support Perl runtime prefix. In this mode, a different header is installed
+# into Perl scripts. This header expects both the scripts and their support
+# library to be installed relative to $(prefix), and resolves the path to
+# the Perl libraries (perllibdir) from the executable's current path
+# (gitexecdir).
+#
+# This configuration requires both $(perllibdir) and $(gitexecdir) to be
+# relative paths, and will error if this is not the case.
+ifdef RUNTIME_PREFIX_PERL
+
+PERL_HEADER_TEMPLATE = perl/header_runtime_prefix.pl.template
+PERL_DEFINES += $(gitexecdir)
+
+# RUNTIME_PREFIX_PERL requires a $(perllibdir) value.
+ifeq ($(perllibdir),)
+perllibdir = $(sharedir_relative)/perl5
+endif
+
+ifneq ($(filter /%,$(firstword $(gitexecdir))),)
+$(error RUNTIME_PREFIX_PERL requires a relative $(gitexecdir))
+endif
+gitexecdir_relative_SQ = $(gitexecdir_SQ)
+
+ifneq ($(filter /%,$(firstword $(perllibdir))),)
+$(error RUNTIME_PREFIX_PERL requires a relative perllibdir)
+endif
+perllibdir_relative_SQ = $(perllibdir_SQ)
+
+endif
+
PERL_DEFINES += $(perllibdir)
perl/perl.mak: GIT-CFLAGS GIT-PREFIX perl/Makefile perl/Makefile.PL
@@ -2001,6 +2037,8 @@ GIT-PERL-HEADER: $(PERL_HEADER_TEMPLATE) GIT-PERL-DEFINES perl/perl.mak
INSTLIBDIR="$$INSTLIBDIR$${INSTLIBDIR_EXTRA:+:$$INSTLIBDIR_EXTRA}" && \
sed -e 's=@@PATHSEP@@='$(pathsep)'=g' \
-e 's=@@INSTLIBDIR@@='$$INSTLIBDIR'=g' \
+ -e 's=@@GITEXECDIR@@='$(gitexecdir_relative_SQ)'=g' \
+ -e 's=@@PERLLIBDIR@@='$(perllibdir_relative_SQ)'=g' \
$< >$@
.PHONY: gitweb
--git a/perl/header_runtime_prefix.pl.template b/perl/header_runtime_prefix.pl.template
new file mode 100644
index 000000000..fb9a9924d
--- /dev/null
+++ b/perl/header_runtime_prefix.pl.template
@@ -0,0 +1,24 @@
+# BEGIN RUNTIME_PREFIX_PERL generated code.
+#
+# This finds our Git::* libraries relative to the script's runtime path.
+BEGIN {
+ use lib split /@@PATHSEP@@/,
+ (
+ $ENV{GITPERLLIB}
+ ||
+ do {
+ require FindBin;
+ require File::Spec;
+ my $gitexecdir_relative = '@@GITEXECDIR@@';
+ my $perllibdir_relative = '@@PERLLIBDIR@@';
+
+ ($FindBin::Bin =~ m=${gitexecdir_relative}$=) ||
+ die('Unrecognized runtime path.');
+ my $prefix = substr($FindBin::Bin, 0, -length($gitexecdir_relative));
+ my $perllibdir = File::Spec->catdir($prefix, $perllibdir_relative);
+ (-e $perllibdir) || die("Invalid library path: $perllibdir");
+ $perllibdir;
+ }
+ );
+}
+# END RUNTIME_PREFIX_PERL generated code.
--
2.15.0.chromium12
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v3 4/4] exec_cmd: RUNTIME_PREFIX on some POSIX systems
2017-11-27 16:40 [PATCH v3 0/4] RUNTIME_PREFIX relocatable Git Dan Jacques
` (2 preceding siblings ...)
2017-11-27 16:40 ` [PATCH v3 3/4] Makefile: add Perl runtime prefix support Dan Jacques
@ 2017-11-27 16:40 ` Dan Jacques
2017-11-27 23:42 ` Johannes Schindelin
3 siblings, 1 reply; 12+ messages in thread
From: Dan Jacques @ 2017-11-27 16:40 UTC (permalink / raw)
To: git; +Cc: Johannes.Schindelin, avarab, dnj, gitster
Enable Git to resolve its own binary location using a variety of
OS-specific and generic methods, including:
- procfs via "/proc/self/exe" (Linux)
- _NSGetExecutablePath (Darwin)
- KERN_PROC_PATHNAME sysctl on BSDs.
- argv0, if absolute (all, including Windows).
This is used to enable RUNTIME_PREFIX support for non-Windows systems,
notably Linux and Darwin. When configured with RUNTIME_PREFIX, Git will
do a best-effort resolution of its executable path and automatically use
this as its "exec_path" for relative helper and data lookups, unless
explicitly overridden.
Small incidental formatting cleanup of "exec_cmd.c".
Signed-off-by: Dan Jacques <dnj@google.com>
---
Makefile | 35 +++++++-
cache.h | 1 +
common-main.c | 4 +-
config.mak.uname | 7 ++
exec_cmd.c | 239 +++++++++++++++++++++++++++++++++++++++++++++++--------
exec_cmd.h | 4 +-
gettext.c | 8 +-
git.c | 2 +-
8 files changed, 260 insertions(+), 40 deletions(-)
diff --git a/Makefile b/Makefile
index a36815b49..014988318 100644
--- a/Makefile
+++ b/Makefile
@@ -416,6 +416,16 @@ all::
#
# Define HAVE_BSD_SYSCTL if your platform has a BSD-compatible sysctl function.
#
+# Define HAVE_BSD_KERN_PROC_SYSCTL if your platform supports the KERN_PROC BSD
+# sysctl function.
+#
+# Define PROCFS_EXECUTABLE_PATH if your platform mounts a "procfs" filesystem
+# capable of resolving the path of the current executable. If defined, this
+# must be the canonical path for the "procfs" current executable path.
+#
+# Define HAVE_NS_GET_EXECUTABLE_PATH if your platform supports calling
+# _NSGetExecutablePath to retrieve the path of the running executable.
+#
# Define HAVE_GETDELIM if your system has the getdelim() function.
#
# Define PAGER_ENV to a SP separated VAR=VAL pairs to define
@@ -426,6 +436,12 @@ all::
# to say "export LESS=FRX (and LV=-c) if the environment variable
# LESS (and LV) is not set, respectively".
#
+# Define RUNTIME_PREFIX to configure Git to resolve its ancillary tooling and
+# support files relative to the location of the runtime binary, rather than
+# hard-coding them into the binary. Git installations built with RUNTIME_PREFIX
+# can be moved to arbitrary filesystem locations. Users may want to enable
+# RUNTIME_PREFIX_PERL as well (see below).
+#
# Define RUNTIME_PREFIX_PERL to configure Git's PERL commands to locate Git
# support libraries relative to their filesystem path instead of hard-coding
# it.
@@ -466,6 +482,7 @@ ARFLAGS = rcs
# mandir
# infodir
# htmldir
+# localedir
# perllibdir
# This can help installing the suite in a relocatable way.
@@ -491,6 +508,7 @@ mandir_relative = $(patsubst $(prefix)/%,%,$(mandir))
infodir_relative = $(patsubst $(prefix)/%,%,$(infodir))
sharedir_relative = $(patsubst $(prefix)/%,%,$(sharedir))
htmldir_relative = $(patsubst $(prefix)/%,%,$(htmldir))
+localedir_relative = $(patsubst $(prefix)/%,%,$(localedir))
export prefix bindir sharedir sysconfdir gitwebdir localedir
@@ -1637,10 +1655,23 @@ ifdef HAVE_BSD_SYSCTL
BASIC_CFLAGS += -DHAVE_BSD_SYSCTL
endif
+ifdef HAVE_BSD_KERN_PROC_SYSCTL
+ BASIC_CFLAGS += -DHAVE_BSD_KERN_PROC_SYSCTL
+endif
+
ifdef HAVE_GETDELIM
BASIC_CFLAGS += -DHAVE_GETDELIM
endif
+ifneq ($(PROCFS_EXECUTABLE_PATH),)
+ procfs_executable_path_SQ = $(subst ','\'',$(PROCFS_EXECUTABLE_PATH))
+ BASIC_CFLAGS += '-DPROCFS_EXECUTABLE_PATH="$(procfs_executable_path_SQ)"'
+endif
+
+ifdef HAVE_NS_GET_EXECUTABLE_PATH
+ BASIC_CFLAGS += -DHAVE_NS_GET_EXECUTABLE_PATH
+endif
+
ifeq ($(TCLTK_PATH),)
NO_TCLTK = NoThanks
endif
@@ -1723,6 +1754,7 @@ bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
mandir_relative_SQ = $(subst ','\'',$(mandir_relative))
infodir_relative_SQ = $(subst ','\'',$(infodir_relative))
localedir_SQ = $(subst ','\'',$(localedir))
+localedir_relative_SQ = $(subst ','\'',$(localedir_relative))
gitexecdir_SQ = $(subst ','\'',$(gitexecdir))
template_dir_SQ = $(subst ','\'',$(template_dir))
htmldir_relative_SQ = $(subst ','\'',$(htmldir_relative))
@@ -2184,6 +2216,7 @@ endif
exec_cmd.sp exec_cmd.s exec_cmd.o: GIT-PREFIX
exec_cmd.sp exec_cmd.s exec_cmd.o: EXTRA_CPPFLAGS = \
'-DGIT_EXEC_PATH="$(gitexecdir_SQ)"' \
+ '-DGIT_LOCALE_PATH="$(localedir_relative_SQ)"' \
'-DBINDIR="$(bindir_relative_SQ)"' \
'-DPREFIX="$(prefix_SQ)"'
@@ -2201,7 +2234,7 @@ attr.sp attr.s attr.o: EXTRA_CPPFLAGS = \
gettext.sp gettext.s gettext.o: GIT-PREFIX
gettext.sp gettext.s gettext.o: EXTRA_CPPFLAGS = \
- -DGIT_LOCALE_PATH='"$(localedir_SQ)"'
+ -DGIT_LOCALE_PATH='"$(localedir_relative_SQ)"'
http-push.sp http.sp http-walker.sp remote-curl.sp imap-send.sp: SPARSE_FLAGS += \
-DCURL_DISABLE_TYPECHECK
diff --git a/cache.h b/cache.h
index 2e1434505..3d84aa0bf 100644
--- a/cache.h
+++ b/cache.h
@@ -449,6 +449,7 @@ static inline enum object_type object_type(unsigned int mode)
#define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS"
#define GIT_QUARANTINE_ENVIRONMENT "GIT_QUARANTINE_PATH"
#define GIT_OPTIONAL_LOCKS_ENVIRONMENT "GIT_OPTIONAL_LOCKS"
+#define GIT_TEXT_DOMAIN_DIR_ENVIRONMENT "GIT_TEXTDOMAINDIR"
/*
* This environment variable is expected to contain a boolean indicating
diff --git a/common-main.c b/common-main.c
index 6a689007e..6516a1f89 100644
--- a/common-main.c
+++ b/common-main.c
@@ -32,12 +32,12 @@ int main(int argc, const char **argv)
*/
sanitize_stdfds();
+ git_resolve_executable_dir(argv[0]);
+
git_setup_gettext();
attr_start();
- git_extract_argv0_path(argv[0]);
-
restore_sigpipe_to_default();
return cmd_main(argc, argv);
diff --git a/config.mak.uname b/config.mak.uname
index 685a80d13..58fd62b4d 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -37,6 +37,7 @@ ifeq ($(uname_S),Linux)
HAVE_GETDELIM = YesPlease
SANE_TEXT_GREP=-a
FREAD_READS_DIRECTORIES = UnfortunatelyYes
+ PROCFS_EXECUTABLE_PATH = /proc/self/exe
endif
ifeq ($(uname_S),GNU/kFreeBSD)
HAVE_ALLOCA_H = YesPlease
@@ -111,6 +112,7 @@ ifeq ($(uname_S),Darwin)
BASIC_CFLAGS += -DPROTECT_HFS_DEFAULT=1
HAVE_BSD_SYSCTL = YesPlease
FREAD_READS_DIRECTORIES = UnfortunatelyYes
+ HAVE_NS_GET_EXECUTABLE_PATH = YesPlease
endif
ifeq ($(uname_S),SunOS)
NEEDS_SOCKET = YesPlease
@@ -206,6 +208,7 @@ ifeq ($(uname_S),FreeBSD)
HAVE_PATHS_H = YesPlease
GMTIME_UNRELIABLE_ERRORS = UnfortunatelyYes
HAVE_BSD_SYSCTL = YesPlease
+ HAVE_BSD_KERN_PROC_SYSCTL = YesPlease
PAGER_ENV = LESS=FRX LV=-c MORE=FRX
FREAD_READS_DIRECTORIES = UnfortunatelyYes
endif
@@ -218,6 +221,8 @@ ifeq ($(uname_S),OpenBSD)
BASIC_LDFLAGS += -L/usr/local/lib
HAVE_PATHS_H = YesPlease
HAVE_BSD_SYSCTL = YesPlease
+ HAVE_BSD_KERN_PROC_SYSCTL = YesPlease
+ PROCFS_EXECUTABLE_PATH = /proc/curproc/file
endif
ifeq ($(uname_S),MirBSD)
NO_STRCASESTR = YesPlease
@@ -236,6 +241,8 @@ ifeq ($(uname_S),NetBSD)
USE_ST_TIMESPEC = YesPlease
HAVE_PATHS_H = YesPlease
HAVE_BSD_SYSCTL = YesPlease
+ HAVE_BSD_KERN_PROC_SYSCTL = YesPlease
+ PROCFS_EXECUTABLE_PATH = /proc/curproc/exe
endif
ifeq ($(uname_S),AIX)
DEFAULT_PAGER = more
diff --git a/exec_cmd.c b/exec_cmd.c
index ce192a2d6..c9006c4c9 100644
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -2,53 +2,232 @@
#include "exec_cmd.h"
#include "quote.h"
#include "argv-array.h"
-#define MAX_ARGS 32
-static const char *argv_exec_path;
+#if defined(RUNTIME_PREFIX)
+
+#if defined(HAVE_NS_GET_EXECUTABLE_PATH)
+#include <mach-o/dyld.h>
+#endif
+
+#if defined(HAVE_BSD_KERN_PROC_SYSCTL)
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
+#endif /* RUNTIME_PREFIX */
+
+#define MAX_ARGS 32
+
+static const char *system_prefix(void);
#ifdef RUNTIME_PREFIX
-static const char *argv0_path;
+
+/**
+ * When using a runtime prefix, Git dynamically resolves paths relative to its
+ * executable.
+ *
+ * The method for determining the path of the executable is highly
+ * platform-specific.
+ */
+
+/**
+ * Path to the current Git executable. Resolved on startup by
+ * 'git_resolve_executable_dir'.
+ */
+static const char *executable_dirname;
static const char *system_prefix(void)
{
static const char *prefix;
- assert(argv0_path);
- assert(is_absolute_path(argv0_path));
+ assert(executable_dirname);
+ assert(is_absolute_path(executable_dirname));
if (!prefix &&
- !(prefix = strip_path_suffix(argv0_path, GIT_EXEC_PATH)) &&
- !(prefix = strip_path_suffix(argv0_path, BINDIR)) &&
- !(prefix = strip_path_suffix(argv0_path, "git"))) {
+ !(prefix = strip_path_suffix(executable_dirname, GIT_EXEC_PATH)) &&
+ !(prefix = strip_path_suffix(executable_dirname, BINDIR)) &&
+ !(prefix = strip_path_suffix(executable_dirname, "git"))) {
prefix = PREFIX;
trace_printf("RUNTIME_PREFIX requested, "
- "but prefix computation failed. "
- "Using static fallback '%s'.\n", prefix);
+ "but prefix computation failed. "
+ "Using static fallback '%s'.\n",
+ prefix);
}
return prefix;
}
-void git_extract_argv0_path(const char *argv0)
+/*
+ * Resolves the executable path from argv[0], only if it is absolute.
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+static int git_get_exec_path_from_argv0(struct strbuf *buf, const char *argv0)
{
const char *slash;
if (!argv0 || !*argv0)
- return;
+ return -1;
slash = find_last_dir_sep(argv0);
+ if (slash) {
+ trace_printf("trace: resolved executable path from argv0: %s\n",
+ argv0);
+ strbuf_add_absolute_path(buf, argv0);
+ return 0;
+ }
+ return -1;
+}
+
+#ifdef PROCFS_EXECUTABLE_PATH
+/*
+ * Resolves the executable path by examining a procfs symlink.
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+static int git_get_exec_path_procfs(struct strbuf *buf)
+{
+ if (strbuf_realpath(buf, PROCFS_EXECUTABLE_PATH, 0)) {
+ trace_printf(
+ "trace: resolved executable path from procfs: %s\n",
+ buf->buf);
+ return 0;
+ }
+ return -1;
+}
+#endif /* PROCFS_EXECUTABLE_PATH */
+
+#ifdef HAVE_BSD_KERN_PROC_SYSCTL
+/*
+ * Resolves the executable path using KERN_PROC_PATHNAME BSD sysctl.
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+static int git_get_exec_path_bsd_sysctl(struct strbuf *buf)
+{
+ int mib[4];
+ char path[MAXPATHLEN];
+ size_t cb = sizeof(path);
+
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC;
+ mib[2] = KERN_PROC_PATHNAME;
+ mib[3] = -1;
+ if (!sysctl(mib, 4, path, &cb, NULL, 0)) {
+ trace_printf(
+ "trace: resolved executable path from sysctl: %s\n",
+ path);
+ strbuf_addstr(buf, path);
+ return 0;
+ }
+ return -1;
+}
+#endif /* HAVE_BSD_KERN_PROC_SYSCTL */
+
+#ifdef HAVE_NS_GET_EXECUTABLE_PATH
+/*
+ * Resolves the executable path by querying Darwin applicaton stack.
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+static int git_get_exec_path_darwin(struct strbuf *buf)
+{
+ char path[PATH_MAX];
+ uint32_t size = sizeof(path);
+ if (!_NSGetExecutablePath(path, &size)) {
+ trace_printf(
+ "trace: resolved executable path from Darwin stack: %s\n",
+ path);
+ strbuf_addstr(buf, path);
+ return 0;
+ }
+ return -1;
+}
+#endif /* HAVE_NS_GET_EXECUTABLE_PATH */
+
+/*
+ * Resolves the absolute path of the current executable.
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+static int git_get_exec_path(struct strbuf *buf, const char *argv0)
+{
+ /*
+ * Identifying the executable path is operating system specific.
+ * Selectively employ all available methods in order of preference,
+ * preferring highly-available authoratative methods over
+ * selectively-available or non- authoratative methods.
+ *
+ * All cases fall back on resolving against argv[0] if there isn't a
+ * better functional method. However, note that argv[0] can be
+ * used-supplied on many operating sysetems, and is not authoratative
+ * in those cases.
+ *
+ * Each of these functions returns 0 on success, so evaluation will stop
+ * after the first successful method.
+ */
+ if (
+#ifdef HAVE_BSD_KERN_PROC_SYSCTL
+ git_get_exec_path_bsd_sysctl(buf) &&
+#endif /* HAVE_BSD_KERN_PROC_SYSCTL */
+
+#ifdef HAVE_NS_GET_EXECUTABLE_PATH
+ git_get_exec_path_darwin(buf) &&
+#endif /* HAVE_NS_GET_EXECUTABLE_PATH */
+
+#ifdef PROCFS_EXECUTABLE_PATH
+ git_get_exec_path_procfs(buf) &&
+#endif /* PROCFS_EXECUTABLE_PATH */
+
+ git_get_exec_path_from_argv0(buf, argv0)) {
+ return -1;
+ }
+ if (strbuf_normalize_path(buf)) {
+ trace_printf("trace: could not normalize path: %s\n", buf->buf);
+ return -1;
+ }
+
+ return 0;
+}
+
+void git_resolve_executable_dir(const char *argv0)
+{
+ struct strbuf buf = STRBUF_INIT;
+ char *resolved;
+ const char *slash;
+
+ if (git_get_exec_path(&buf, argv0)) {
+ trace_printf(
+ "trace: could not determine executable path from: %s\n",
+ argv0);
+ strbuf_release(&buf);
+ return;
+ }
+
+ resolved = strbuf_detach(&buf, NULL);
+ slash = find_last_dir_sep(resolved);
if (slash)
- argv0_path = xstrndup(argv0, slash - argv0);
+ resolved[slash - resolved] = '\0';
+
+ executable_dirname = resolved;
+ trace_printf("trace: resolved executable dir: %s\n",
+ executable_dirname);
}
#else
+/**
+ * When not using a runtime prefix, Git uses a hard-coded path, and there is
+ * nothing to resolve.
+ */
+
static const char *system_prefix(void)
{
return PREFIX;
}
-void git_extract_argv0_path(const char *argv0)
+void git_resolve_executable_dir(const char *argv0)
{
}
@@ -65,32 +244,28 @@ char *system_path(const char *path)
return strbuf_detach(&d, NULL);
}
-void git_set_argv_exec_path(const char *exec_path)
+static const char *exec_path_value;
+
+void git_set_exec_path(const char *exec_path)
{
- argv_exec_path = exec_path;
+ exec_path_value = exec_path;
/*
* Propagate this setting to external programs.
*/
setenv(EXEC_PATH_ENVIRONMENT, exec_path, 1);
}
-
-/* Returns the highest-priority, location to look for git programs. */
+/* Returns the highest-priority location to look for git programs. */
const char *git_exec_path(void)
{
- static char *cached_exec_path;
-
- if (argv_exec_path)
- return argv_exec_path;
-
- if (!cached_exec_path) {
+ if (!exec_path_value) {
const char *env = getenv(EXEC_PATH_ENVIRONMENT);
if (env && *env)
- cached_exec_path = xstrdup(env);
+ exec_path_value = xstrdup(env);
else
- cached_exec_path = system_path(GIT_EXEC_PATH);
+ exec_path_value = system_path(GIT_EXEC_PATH);
}
- return cached_exec_path;
+ return exec_path_value;
}
static void add_path(struct strbuf *out, const char *path)
@@ -103,10 +278,12 @@ static void add_path(struct strbuf *out, const char *path)
void setup_path(void)
{
+ const char *exec_path = git_exec_path();
const char *old_path = getenv("PATH");
struct strbuf new_path = STRBUF_INIT;
- add_path(&new_path, git_exec_path());
+ git_set_exec_path(exec_path);
+ add_path(&new_path, exec_path);
if (old_path)
strbuf_addstr(&new_path, old_path);
@@ -125,7 +302,8 @@ const char **prepare_git_cmd(struct argv_array *out, const char **argv)
return out->argv;
}
-int execv_git_cmd(const char **argv) {
+int execv_git_cmd(const char **argv)
+{
struct argv_array nargv = ARGV_ARRAY_INIT;
prepare_git_cmd(&nargv, argv);
@@ -140,8 +318,7 @@ int execv_git_cmd(const char **argv) {
return -1;
}
-
-int execl_git_cmd(const char *cmd,...)
+int execl_git_cmd(const char *cmd, ...)
{
int argc;
const char *argv[MAX_ARGS + 1];
diff --git a/exec_cmd.h b/exec_cmd.h
index ff0b48048..2522453cd 100644
--- a/exec_cmd.h
+++ b/exec_cmd.h
@@ -3,8 +3,8 @@
struct argv_array;
-extern void git_set_argv_exec_path(const char *exec_path);
-extern void git_extract_argv0_path(const char *path);
+extern void git_set_exec_path(const char *exec_path);
+extern void git_resolve_executable_dir(const char *path);
extern const char *git_exec_path(void);
extern void setup_path(void);
extern const char **prepare_git_cmd(struct argv_array *out, const char **argv);
diff --git a/gettext.c b/gettext.c
index db727ea02..6b64d5c2e 100644
--- a/gettext.c
+++ b/gettext.c
@@ -2,7 +2,8 @@
* Copyright (c) 2010 Ævar Arnfjörð Bjarmason
*/
-#include "git-compat-util.h"
+#include "cache.h"
+#include "exec_cmd.h"
#include "gettext.h"
#include "strbuf.h"
#include "utf8.h"
@@ -157,10 +158,11 @@ static void init_gettext_charset(const char *domain)
void git_setup_gettext(void)
{
- const char *podir = getenv("GIT_TEXTDOMAINDIR");
+ const char *podir = getenv(GIT_TEXT_DOMAIN_DIR_ENVIRONMENT);
if (!podir)
- podir = GIT_LOCALE_PATH;
+ podir = system_path(GIT_LOCALE_PATH);
+
bindtextdomain("git", podir);
setlocale(LC_MESSAGES, "");
setlocale(LC_TIME, "");
diff --git a/git.c b/git.c
index 9e96dd409..dc4cc1419 100644
--- a/git.c
+++ b/git.c
@@ -65,7 +65,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
*/
if (skip_prefix(cmd, "--exec-path", &cmd)) {
if (*cmd == '=')
- git_set_argv_exec_path(cmd + 1);
+ git_set_exec_path(cmd + 1);
else {
puts(git_exec_path());
exit(0);
--
2.15.0.chromium12
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