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aa5e85a108
Since fchmodat(2) on Linux doesn't support AT_SYMLINK_NOFOLLOW, we have to implement it using workarounds. There are two different ways, depending on whether the system supports O_PATH or not. In the case O_PATH is supported, we rely on the behavhior of openat(2) when passing O_NOFOLLOW | O_PATH and the file is a symbolic link. Even if openat_file() already adds O_NOFOLLOW to the flags, this patch makes it explicit that we need both creation flags to obtain the expected behavior. This is only cleanup, no functional change. Signed-off-by: Greg Kurz <groug@kaod.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>