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Add core.symlinks to mark filesystems that do not support symbolic links.

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Some file systems that can host git repositories and their working copies
do not support symbolic links. But then if the repository contains a symbolic
link, it is impossible to check out the working copy.

This patch enables partial support of symbolic links so that it is possible
to check out a working copy on such a file system.  A new flag
core.symlinks (which is true by default) can be set to false to indicate
that the filesystem does not support symbolic links. In this case, symbolic
links that exist in the trees are checked out as small plain files, and
checking in modifications of these files preserve the symlink property in
the database (as long as an entry exists in the index).

Of course, this does not magically make symbolic links work on such defective
file systems; hence, this solution does not help if the working copy relies
on that an entry is a real symbolic link.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Johannes Sixt
2007-03-02 22:11:30 +01:00
committed by Junio C Hamano
parent 4808bec6f9
commit 78a8d641c1
12 changed files with 101 additions and 12 deletions
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9
entry.c
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@ -111,9 +111,12 @@ static int write_entry(struct cache_entry *ce, char *path, struct checkout *stat
return error("git-checkout-index: unable to write file %s", path);
break;
case S_IFLNK:
if (to_tempfile) {
strcpy(path, ".merge_link_XXXXXX");
fd = mkstemp(path);
if (to_tempfile || !has_symlinks) {
if (to_tempfile) {
strcpy(path, ".merge_link_XXXXXX");
fd = mkstemp(path);
} else
fd = create_file(path, 0666);
if (fd < 0) {
free(new);
return error("git-checkout-index: unable to create "