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>

diff --git a/Makefile b/Makefile
index e57d975..98ac6e1 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,9 @@ all::
 # Define EXPATDIR=/foo/bar if your expat header and library files are in
 # /foo/bar/include and /foo/bar/lib directories.
 #
+# Define HAVE_PATHS_H if you have paths.h and want to use the default PATH
+# it specifies.
+#
 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 #
 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
@@ -702,10 +705,12 @@ EXTLIBS =
 ifeq ($(uname_S),Linux)
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
+       HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),GNU/kFreeBSD)
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
+       HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),UnixWare)
        CC = cc
@@ -832,6 +837,7 @@ ifeq ($(uname_S),FreeBSD)
                NO_STRTOUMAX = YesPlease
        endif
        PYTHON_PATH = /usr/local/bin/python
+       HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),OpenBSD)
        NO_STRCASESTR = YesPlease
@@ -840,6 +846,7 @@ ifeq ($(uname_S),OpenBSD)
        NEEDS_LIBICONV = YesPlease
        BASIC_CFLAGS += -I/usr/local/include
        BASIC_LDFLAGS += -L/usr/local/lib
+       HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),NetBSD)
        ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
@@ -849,6 +856,7 @@ ifeq ($(uname_S),NetBSD)
        BASIC_LDFLAGS += -L/usr/pkg/lib $(CC_LD_DYNPATH)/usr/pkg/lib
        USE_ST_TIMESPEC = YesPlease
        NO_MKSTEMPS = YesPlease
+       HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),AIX)
        NO_STRCASESTR=YesPlease
@@ -869,6 +877,7 @@ ifeq ($(uname_S),GNU)
        # GNU/Hurd
        NO_STRLCPY=YesPlease
        NO_MKSTEMPS = YesPlease
+       HAVE_PATHS_H = YesPlease
 endif
 ifeq ($(uname_S),IRIX)
        NO_SETENV = YesPlease
@@ -1309,6 +1318,10 @@ else
        LIB_OBJS += thread-utils.o
 endif
 
+ifdef HAVE_PATHS_H
+       BASIC_CFLAGS += -DHAVE_PATHS_H
+endif
+
 ifdef DIR_HAS_BSD_GROUP_SEMANTICS
        COMPAT_CFLAGS += -DDIR_HAS_BSD_GROUP_SEMANTICS
 endif

diff --git a/exec_cmd.c b/exec_cmd.c
index 408e4e5..484d018 100644 (file)
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -107,7 +107,7 @@ void setup_path(void)
        if (old_path)
                strbuf_addstr(&new_path, old_path);
        else
-               strbuf_addstr(&new_path, "/usr/local/bin:/usr/bin:/bin");
+               strbuf_addstr(&new_path, _PATH_DEFPATH);
 
        setenv("PATH", new_path.buf, 1);
 

diff --git a/git-compat-util.h b/git-compat-util.h
index a3c4537..e215ce0 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -163,6 +163,13 @@ extern char *gitbasename(char *);
 #define PATH_SEP ':'
 #endif
 
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+#ifndef _PATH_DEFPATH
+#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
+#endif
+
 #ifndef STRIP_EXTENSION
 #define STRIP_EXTENSION ""
 #endif