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Our bsd_to_linux_sockaddr() and linux_to_bsd_sockaddr() functions

Description

Our bsd_to_linux_sockaddr() and linux_to_bsd_sockaddr() functions
alter the userspace sockaddr to convert the format between linux and BSD versions.
That's the minimum 3 of copyin/copyout operations for one syscall.

Also some syscall uses linux_sa_put() and linux_getsockaddr() when load
sockaddr to userspace or from userspace accordingly.

To avoid this chaos, especially converting sockaddr in the userspace,
rewrite these 4 functions to convert sockaddr only in kernel and leave
only 2 of this functions.

Also in order to reduce duplication between MD parts of the Linuxulator put
struct sockaddr conversion functions that are MI out into linux_common module.

PR: 232920
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20157

Details

Committed
dchaginMay 13 2019, 5:48 PM
Differential Revision
D20157: Rewrite Linuxulator struct sockaddr conversion funtions
Parents
rS347532: Provide separate accounting for user-wired pages.
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