[PATCH] ntdll: Use lstat instead of fstatat.

[Alistair Leslie-Hughes]

This stops a compile on the macos.

Signed-off-by: Alistair Leslie-Hughes 
---
 dlls/ntdll/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index 1a5f86d7c2..fd2f17dc72 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -139,7 +139,7 @@ static inline ULONG get_file_attributes( const struct stat *st )
 static BOOL fd_is_mount_point( int fd, const struct stat *st )
 {
     struct stat parent;
-    return S_ISDIR( st->st_mode ) && !fstatat( fd, "..", &parent, 0 )
+    return S_ISDIR( st->st_mode ) && !lstat( "..", &parent)
             && (parent.st_dev != st->st_dev || parent.st_ino == st->st_ino);
 }

[Chris Robinson]

On 3/23/20 9:07 PM, Alistair Leslie-Hughes wrote:
> - return S_ISDIR( st->st_mode ) && !fstatat( fd, "..", &parent, 0 )
> - return S_ISDIR( st->st_mode ) && !lstat( "..", &parent)

These aren't the same. For relative paths, fstatat takes it as relative 
to the directory indicated by 'fd', whereas lstat takes it as relative 
to the current working directory. Also, fstatat goes through symlinks by 
default, whereas lstat doesn't (not likely to be an issue for '..', but 
technically different nonetheless).

[Chip Davis]

March 23, 2020 11:08 PM, "Alistair Leslie-Hughes"  wrote:
> This stops a compile on the macos.

Is someone actually using an old (10.9 or lower) SDK to build this? (fstatat(2) was added in Mac OS 10.10.)

Chip

[Alistair Leslie-Hughes]

Hi Chip

On 24/3/20 4:01 pm, Chip Davis wrote:
> March 23, 2020 11:08 PM, "Alistair Leslie-Hughes"  wrote:
> > This stops a compile on the macos.
>
> Is someone actually using an old (10.9 or lower) SDK to build this? (fstatat(2) was added in Mac OS 10.10.)

Yes, the build box uses an older SDK.

Maybe Sebastian or Michael can comment, if it can be updated?

Alistair.

[Erich E. Hoover]

Besides the fact that compiling for an older SDK increases the number of
versions where the build works, I believe that Sebastian encountered
problems with the compiler for the newer versions that were available at
the time he put together the build system together.  It's been a while, but
if I recall correctly, someone brought the issue to Apple's attention and
it's been fixed in newer releases.  So, it may be that if you update to
something "new enough" that that will fix this issue without breaking
everything.

Best,
Erich

On Mon, Mar 23, 2020, 11:11 PM Alistair Leslie-Hughes <
[e-mail]> wrote:
> Hi Chip
>
> On 24/3/20 4:01 pm, Chip Davis wrote:
> > March 23, 2020 11:08 PM, "Alistair Leslie-Hughes" <
>
> [e-mail]> wrote:
> > > This stops a compile on the macos.
> >
> > Is someone actually using an old (10.9 or lower) SDK to build this?
>
> (fstatat(2) was added in Mac OS 10.10.)
>
> Yes, the build box uses an older SDK.
>
> Maybe Sebastian or Michael can comment, if it can be updated?
>
> Alistair.