Re: [RFC] test-lib.sh: No POSIXPERM for cygwin

On Sat, Mar 23, 2013 at 8:40 AM, Torsten Bögershausen [off-list ref] wrote:

Subject: [PATCH] Make core.sharedRepository work under cygwin 1.7

When core.sharedRepository is used, set_shared_perm() in path.c
needs lstat() to return the correct POSIX permissions.

The default for cygwin is core.ignoreCygwinFSTricks = false, which
means that the fast implementation in do_stat() is used instead of lstat().

lstat() under cygwin uses the Windows security model to implement
POSIX-like permissions.
The user, group or everyone bits can be set individually.

do_stat() simplifes the file permission bits, and may return a wrong value:
The read-only attribute of a file is used to calculate
the permissions, resulting in either rw-r--r-- or r--r--r--

One effect of the simplified do_stat() is that t1301 failes.

s/failes/fails/

Add a function cygwin_get_st_mode_bits() which returns the POSIX permissions.
When not compiling for cygwin, true_mode_bits() in path.c is used.