According to the Linux open(2) man page, open() returns EISDIR if a
directory was attempted to be opened for writing. Our emulation in
mingw_open() does not get this right: it checks only for O_CREAT. Fix
it to check for a write request.
This fixes a failure in reflog handling, which opens files with
O_APPEND|O_WRONLY, but without O_CREAT, and expects EISDIR when the
named file happens to be a directory.
Signed-off-by: Johannes Sixt <j...@kdbg.org>
---
This version of the patch uses O_ACCMODE.
compat/mingw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/compat/mingw.c b/compat/mingw.c
index 2ee3fe3..c702731 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -312,7 +312,7 @@ int mingw_open (const char *filename, int oflags, ...)
return -1;
fd = _wopen(wfilename, oflags, mode);
- if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
+ if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
DWORD attrs = GetFileAttributesW(wfilename);
if (attrs != INVALID_FILE_ATTRIBUTES && (attrs &
FILE_ATTRIBUTE_DIRECTORY))
errno = EISDIR;
--
2.0.0.12.gbcf935e
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