19647e76fc
Alter shmget_allocate_segment and shmget_existing to take the values they want from struct shmget_args rather than passing the struct around. In general, uap structures should only be the interface to sys_<foo> functions. This makes on small functional change and records the allocated space rather than the requested space. If this turns out to be a problem (e.g. if software tries to find undersized segments by exact size rather than using keys), we can correct that easily. Reviewed by: kib Obtained from: CheriBSD MFC after: 1 week Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D27077
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