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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-21 10:55:18 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-21 10:55:18 -0700
commitbb233d690a9782e1570dc93ead2bf04aaca7cfe4 (patch)
treefb5599a254b880afd905dcef56c639292f94b6ee /read-tree.c
parent65bb49144d26a10837582a99e66041035319ff91 (diff)
downloadgit-bb233d690a9782e1570dc93ead2bf04aaca7cfe4.tar.gz
Add support for a "GIT_INDEX_FILE" environment variable.
We use that to specify alternative index files, which can be useful if you want to (for example) generate a temporary index file to do some specific operation that you don't want to mess with your main one with. It defaults to the regular ".git/index" if it hasn't been specified.
Diffstat (limited to 'read-tree.c')
-rw-r--r--read-tree.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/read-tree.c b/read-tree.c
index 53351f05c7..8121e30671 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -79,12 +79,12 @@ static int read_tree(unsigned char *sha1, const char *base, int baselen)
return read_tree_recursive(buffer, "tree", size, base, baselen);
}
-static int remove_lock = 0;
+static char *lockfile_name;
static void remove_lock_file(void)
{
- if (remove_lock)
- unlink(".git/index.lock");
+ if (lockfile_name)
+ unlink(lockfile_name);
}
static int path_matches(struct cache_entry *a, struct cache_entry *b)
@@ -223,12 +223,16 @@ int main(int argc, char **argv)
{
int i, newfd, merge;
unsigned char sha1[20];
+ static char lockfile[MAXPATHLEN+1];
+ const char *indexfile = get_index_file();
- newfd = open(".git/index.lock", O_RDWR | O_CREAT | O_EXCL, 0600);
+ snprintf(lockfile, sizeof(lockfile), "%s.lock", indexfile);
+
+ newfd = open(lockfile, O_RDWR | O_CREAT | O_EXCL, 0600);
if (newfd < 0)
die("unable to create new cachefile");
atexit(remove_lock_file);
- remove_lock = 1;
+ lockfile_name = lockfile;
merge = 0;
for (i = 1; i < argc; i++) {
@@ -268,9 +272,8 @@ int main(int argc, char **argv)
die("just how do you expect me to merge %d trees?", stage-1);
}
}
- if (write_cache(newfd, active_cache, active_nr) ||
- rename(".git/index.lock", ".git/index"))
+ if (write_cache(newfd, active_cache, active_nr) || rename(lockfile, indexfile))
die("unable to write new index file");
- remove_lock = 0;
+ lockfile_name = NULL;
return 0;
}