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2008-07-28Refactor, adding prepare_git_cmd(const char **argv)Libravatar Steffen Prohaska1-1/+6
prepare_git_cmd(const char **argv) adds a first entry "git" to the array argv. The new array is allocated on the heap. It's the caller's responsibility to release it with free(). The code was already present in execv_git_cmd() but could not be used from outside. Now it can also be called for preparing the command list in the MinGW codepath in run-command.c. Signed-off-by: Steffen Prohaska <prohaska@zib.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-25Allow add_path() to add non-existent directories to the pathLibravatar Johannes Sixt1-1/+1
This function had used make_absolute_path(); but this function dies if the directory that contains the entry whose relative path was supplied in the argument does not exist. This is a problem if the argument is, for example, "../libexec/git-core", and that "../libexec" does not exist. Since the resolution of symbolic links is not required for elements in PATH, we can fall back to using make_nonrelative_path(), which simply prepends $PWD to the path. We have to move make_nonrelative_path() alongside make_absolute_path() in abspath.c so that git-shell can be linked. See 5b8e6f85f. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-25Allow the built-in exec path to be relative to the command invocation pathLibravatar Johannes Sixt1-36/+2
If GIT_EXEC_PATH (the macro that is defined in the Makefile) is relative, it is interpreted relative to the command's invocation path, which usually is $(bindir). The Makefile rules were written with the assumption that $(gitexecdir) is an absolute path. We introduce a separate variable that names the (absolute) installation directory. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-25Fix relative built-in paths to be relative to the command invocationLibravatar Johannes Sixt1-2/+2
$(gitexecdir) (as defined in the Makefile) has gained another path component, but the relative paths in the MINGW section of the Makefile, which are interpreted relative to it, do not account for it. Instead of adding another ../ in front of the path, we change the code that constructs the absolute paths to do it relative to the command's directory, which is essentially $(bindir). We do it this way because we will also allow a relative $(gitexecdir) later. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-25Record the command invocation path earlyLibravatar Johannes Sixt1-2/+8
We will need the command invocation path in system_path(). This path was passed to setup_path(), but system_path() can be called earlier, for example via: main commit_pager_choice setup_pager git_config git_etc_gitconfig system_path Therefore, we introduce git_set_argv0_path() and call it as soon as possible. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-13Move code interpreting path relative to exec-dir to new function system_path()Libravatar Steffen Prohaska1-0/+10
Expanding system paths relative to git_exec_path can be used for creating an installation that can be moved to a different directory without re-compiling. We use this approach for template_dir and the system wide gitconfig. The Windows installer (msysgit) is an example for such a setup. This commit moves common code to a new function system_path(). System paths that are to be interpreted relative to git_exec_path are passed to system_path() and the return value is used instead of the original path. system_path() prefixes a relative path with git_exec_path and leaves absolute paths unmodified. For example, we now write template_dir = system_path(DEFAULT_GIT_TEMPLATE_DIR); [j6t: moved from path.c to exec_cmd.c] Signed-off-by: Steffen Prohaska <prohaska@zib.de> Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-02Merge branch 'j6t/mingw'Libravatar Junio C Hamano1-4/+37
* j6t/mingw: (38 commits) compat/pread.c: Add a forward declaration to fix a warning Windows: Fix ntohl() related warnings about printf formatting Windows: TMP and TEMP environment variables specify a temporary directory. Windows: Make 'git help -a' work. Windows: Work around an oddity when a pipe with no reader is written to. Windows: Make the pager work. When installing, be prepared that template_dir may be relative. Windows: Use a relative default template_dir and ETC_GITCONFIG Windows: Compute the fallback for exec_path from the program invocation. Turn builtin_exec_path into a function. Windows: Use a customized struct stat that also has the st_blocks member. Windows: Add a custom implementation for utime(). Windows: Add a new lstat and fstat implementation based on Win32 API. Windows: Implement a custom spawnve(). Windows: Implement wrappers for gethostbyname(), socket(), and connect(). Windows: Work around incompatible sort and find. Windows: Implement asynchronous functions as threads. Windows: Disambiguate DOS style paths from SSH URLs. Windows: A rudimentary poll() emulation. Windows: Implement start_command(). ...
2008-06-26Windows: Compute the fallback for exec_path from the program invocation.Libravatar Johannes Sixt1-0/+29
Since on Windows the user is fairly free where to install programs, we cannot rely on a hard-coded path. We use the program name to derive the installation directory and use that as exec_path. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-26Turn builtin_exec_path into a function.Libravatar Johannes Sixt1-3/+7
builtin_exec_path returns the hard-coded installation path, which is used as the ultimate fallback to look for git commands. Making it into a function enables us in a follow-up patch to return a computed value instead of just a constant string. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2008-06-23Prepare execv_git_cmd() for removal of builtins from the filesystemLibravatar Junio C Hamano1-19/+12
Currently, execv_git_cmd() always try running the dashed form, which means we cannot easily remove the git-foo hardlinks for built-in commands. This updates the function to always exec "git foo" form, and makes sure "git" potty does not infinitely recurse to itself. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-22Windows: Use the Windows style PATH separator ';'.Libravatar Johannes Sixt1-1/+1
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
2007-12-03Trace and quote with argv: get rid of unneeded count argument.Libravatar Christian Couder1-1/+1
Now that str_buf takes care of all the allocations, there is no more gain to pass an argument count. So this patch removes the "count" argument from: - "sq_quote_argv" - "trace_argv_printf" and all the callers. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-29use only the $PATH for exec'ing git commandsLibravatar Scott R Parish1-69/+53
We need to correctly set up $PATH for non-c based git commands. Since we already do this, we can just use that $PATH and execvp, instead of looping over the paths with execve. This patch adds a setup_path() function to exec_cmd.c, which sets the $PATH order correctly for our search order. execv_git_cmd() is stripped down to setting up argv and calling execvp(). git.c's main() only only needs to call setup_path(). Signed-off-by: Scott R Parish <srp@srparish.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-29"current_exec_path" is a misleading name, use "argv_exec_path"Libravatar Scott R Parish1-6/+6
Signed-off-by: Scott R Parish <srp@srparish.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-02-20Mechanical conversion to use prefixcmp()Libravatar Junio C Hamano1-1/+1
This mechanically converts strncmp() to use prefixcmp(), but only when the parameters match specific patterns, so that they can be verified easily. Leftover from this will be fixed in a separate step, including idiotic conversions like if (!strncmp("foo", arg, 3)) => if (!(-prefixcmp(arg, "foo"))) This was done by using this script in px.perl #!/usr/bin/perl -i.bak -p if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) { s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|; } if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) { s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|; } and running: $ git grep -l strncmp -- '*.c' | xargs perl px.perl Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-19Use preprocessor constants for environment variable names.Libravatar Junio C Hamano1-2/+2
We broke the discipline Linus set up to allow compiler help us avoid typos in environment names in the early days of git over time. This defines a handful preprocessor constants for environment variable names used in relatively core parts of the system. I've left out variable names specific to subsystems such as HTTP and SSL as I do not think they are big problems. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-08-31Trace into open fd and refactor tracing code.Libravatar Christian Couder1-16/+2
Now if GIT_TRACE is set to an integer value greater than 1 and lower than 10, we interpret this as an open fd value and we trace into it. Note that this behavior is not compatible with the previous one. We also trace whole messages using one write(2) call to make sure messages from processes do net get mixed up in the middle. It's now possible to run the tests like this: GIT_TRACE=9 make test 9>/var/tmp/trace.log Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-08-15remove unnecessary initializationsLibravatar David Rientjes1-1/+1
[jc: I needed to hand merge the changes to the updated codebase, so the result needs to be checked.] Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-09GIT_TRACE: fix a mixed declarations and code warningLibravatar Timo Hirvonen1-1/+1
Signed-off-by: Timo Hirvonen <tihirvon@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-09GIT_TRACE: show which built-in/external commands are executedLibravatar Matthias Lederhofer1-0/+19
With the environment variable GIT_TRACE set git will show - alias expansion - built-in command execution - external command execution on stderr. Signed-off-by: Matthias Lederhofer <matled@gmx.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-30git_exec_path, execv_git_cmd: ignore empty environment variablesLibravatar Dmitry V. Levin1-2/+2
Ignoring empty environment variables is good common practice. Ignoring --exec-path with empty argument won't harm, too: if user means current directory, there is a "--exec-path=." Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-30execv_git_cmd: Fix stack buffer overflow.Libravatar Dmitry V. Levin1-9/+23
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-17cleanups: remove unused variable from exec_cmd.cLibravatar Serge E. Hallyn1-3/+1
Not sure whether it should be removed, or whether execv_git_cmd() should return it rather than -1 at bottom. Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-09Use #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))Libravatar Junio C Hamano1-1/+1
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-05Const tightening.Libravatar Junio C Hamano1-6/+7
Mark Wooding noticed there was a type mismatch warning in git.c; this patch does things slightly differently (mostly tightening const) and was what I was holding onto, waiting for the setup-revisions change to be merged into the master branch. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-02-26Use setenv(), fix warningsLibravatar Timo Hirvonen1-1/+1
- Fix -Wundef -Wold-style-definition warnings - Make pll_free() static [jc: original patch by Timo had another unrelated bits: - Use setenv() instead of putenv() I'm postponing that part for now.] Signed-off-by: Timo Hirvonen <tihirvon@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-13Exec git programs without using PATH.Libravatar Michal Ostrowski1-0/+117
The git suite may not be in PATH (and thus programs such as git-send-pack could not exec git-rev-list). Thus there is a need for logic that will locate these programs. Modifying PATH is not desirable as it result in behavior differing from the user's intentions, as we may end up prepending "/usr/bin" to PATH. - git C programs will use exec*_git_cmd() APIs to exec sub-commands. - exec*_git_cmd() will execute a git program by searching for it in the following directories: 1. --exec-path (as used by "git") 2. The GIT_EXEC_PATH environment variable. 3. $(gitexecdir) as set in Makefile (default value $(bindir)). - git wrapper will modify PATH as before to enable shell scripts to invoke "git-foo" commands. Ideally, shell scripts should use the git wrapper to become independent of PATH, and then modifying PATH will not be necessary. [jc: with minor updates after a brief review.] Signed-off-by: Michal Ostrowski <mostrows@watson.ibm.com> Signed-off-by: Junio C Hamano <junkio@cox.net>