Masatake YAMATO wrote:
Hi,
__syscall_return in unistd.h is maintained?
In the macro the value returned from system call is
compared with the maximum error number defined in a header file
to know the call is successful or not. However, the maximum error number
is hard-coded and is not updated.
And it's wrong, anyway. It has long been agreed that the maximum errno
value, for any architecture, is 4095.
So we should do just:
#define GENERIC_ERRNO_MAX 4095
Here my patch is proved to be useful for maintaining __syscall_return:-P
Well, most of the various macros in unistd.h really should go too, since
they're mostly underutilized and definitely ill-maintained.
The only one that I know of which is still used by the kernel itself is
execve. If so, perhaps we should just have an open-coded execve.
-hpa
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