Am 16.06.2011 22:23, schrieb Ramsay Jones:
>
> The 'forced modes' test fails on cygwin because the post-update
> hook loses it's executable bit when copied from the templates
> directory by git-init. The template loses it's executable bit
> because the lstat() function resolves to the "native Win32 API"
> implementation.
>
> This call to lstat() happens after git-init has set the "git_dir"
> (so has_git_dir() returns true), but before the configuration has
> been fully initialised. At this point git_config() does not find
> any config files to parse and returns 0. Unfortunately, the code
> used to determine the cygwin l/stat() function bindings did not
> check the return from git_config() and assumed that the config
> was complete and accessible once "git_dir" was set.
>
> In order to fix the test, we simply change the binding code to
> test the return value from git_config(), to ensure that it actually
> had config values to read, before determining the requested binding.
>
> Signed-off-by: Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxx>
> ---
> compat/cygwin.c | 3 +--
> 1 files changed, 1 insertions(+), 2 deletions(-)
>
> diff --git a/compat/cygwin.c b/compat/cygwin.c
> index b4a51b9..b38dbd7 100644
> --- a/compat/cygwin.c
> +++ b/compat/cygwin.c
> @@ -114,8 +114,7 @@ static int git_cygwin_config(const char *var, const char *value, void *cb)
>
> static int init_stat(void)
> {
> - if (have_git_dir()) {
> - git_config(git_cygwin_config, NULL);
> + if (have_git_dir() && git_config(git_cygwin_config,NULL)) {
> if (!core_filemode && native_stat) {
> cygwin_stat_fn = cygwin_stat;
> cygwin_lstat_fn = cygwin_lstat;
So, this means that if neither core.filemode nor
core.ignorecygwinfstricks is assigned a value, then regular (Cygwin's)
l/stat is used. Ok, that's what we need: the default value of
core.filemode is true, which means we need Cygwin's l/stat; it trumps
the default value of core.ignorecygwinfstricks, which is also true. Good!
BTW, it seems the patch fixes a bug when the two config parameters are
not assigned a value: the initialization looks like this[*]:
static int native_stat = 1;
static int core_filemode;
i.e., the default value of core.filemode seen by compat/cygwin.c is
actually false, and the fast native l/stat would be used, contrary to
the documentation. Am I missing something?
[*] Note to bystanders: compat/cygwin.c keeps its own copy of
core.filemode; see the comments near these variables.
-- Hannes
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