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Konstantin Belousov 940cb0e2bb Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd. 
Add MAC framework entries for posix shm read and write.

Do not allow implicit extension of the underlying memory segment past
the limit set by ftruncate(2) by either of the syscalls.  Read and
write returns short i/o, lseek(2) fails with EINVAL when resulting
offset does not fit into the limit.

Discussed with:	alc
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
2013-08-21 17:45:00 +00:00
..
audit audit_proc_coredump: check return value of audit_new 2013-07-09 09:03:01 +00:00
mac Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd. 2013-08-21 17:45:00 +00:00
mac_biba Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd. 2013-08-21 17:45:00 +00:00
mac_bsdextended Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
mac_ifoff Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
mac_lomac Remove direct access to si_name. 2012-02-10 12:35:57 +00:00
mac_mls Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd. 2013-08-21 17:45:00 +00:00
mac_none
mac_partition Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
mac_portacl Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
mac_seeotheruids Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
mac_stub Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd. 2013-08-21 17:45:00 +00:00
mac_test Implement read(2)/write(2) and neccessary lseek(2) for posix shmfd. 2013-08-21 17:45:00 +00:00