Fix git-update-index to work with relative pathnames.

In particular, it fixes the following (typical for cygwin) problem:

    $ git-update-index --chmod=-x ../wrapper/Jamfile
    fatal: git-update-index: cannot chmod -x '../wrapper/Jamfile'

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-update-index.c b/builtin-update-index.c
index 182331d34156dd6b88d16a068efad591e07ae6b3..1ac613a78869e5b0a2ac45ca6ab72adc18a55575 100644 (file)
--- a/builtin-update-index.c
+++ b/builtin-update-index.c
@@ -501,6 +501,7 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
 
        for (i = 1 ; i < argc; i++) {
                const char *path = argv[i];
+               const char *p;
 
                if (allow_options && *path == '-') {
                        if (!strcmp(path, "--")) {
@@ -616,9 +617,12 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
                                usage(update_index_usage);
                        die("unknown option %s", path);
                }
-               update_one(path, prefix, prefix_length);
+               p = prefix_path(prefix, prefix_length, path);
+               update_one(p, NULL, 0);
                if (set_executable_bit)
-                       chmod_path(set_executable_bit, path);
+                       chmod_path(set_executable_bit, p);
+               if (p < path || p > path + strlen(path))
+                       free((char*)p);
        }
        if (read_from_stdin) {
                struct strbuf buf;