linux/security
David Howells 1fd36adcd9 Replace the fd_sets in struct fdtable with an array of unsigned longs
Replace the fd_sets in struct fdtable with an array of unsigned longs and then
use the standard non-atomic bit operations rather than the FD_* macros.

This:

 (1) Removes the abuses of struct fd_set:

     (a) Since we don't want to allocate a full fd_set the vast majority of the
     	 time, we actually, in effect, just allocate a just-big-enough array of
     	 unsigned longs and cast it to an fd_set type - so why bother with the
     	 fd_set at all?

     (b) Some places outside of the core fdtable handling code (such as
     	 SELinux) want to look inside the array of unsigned longs hidden inside
     	 the fd_set struct for more efficient iteration over the entire set.

 (2) Eliminates the use of FD_*() macros in the kernel completely.

 (3) Permits the __FD_*() macros to be deleted entirely where not exposed to
     userspace.

Signed-off-by: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/20120216174954.23314.48147.stgit@warthog.procyon.org.uk
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
2012-02-19 10:30:57 -08:00
..
apparmor Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security 2012-01-14 18:36:33 -08:00
integrity ima: fix cred sparse warning 2012-01-19 15:59:11 +11:00
keys Merge git://git.samba.org/sfrench/cifs-2.6 2012-01-23 08:59:49 -08:00
selinux Replace the fd_sets in struct fdtable with an array of unsigned longs 2012-02-19 10:30:57 -08:00
smack vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb 2012-01-06 23:16:53 -05:00
tomoyo TOMOYO: Accept \000 as a valid character. 2012-01-18 10:40:59 +11:00
capability.c Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security 2012-01-14 18:36:33 -08:00
commoncap.c Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security 2012-01-14 18:36:33 -08:00
device_cgroup.c cgroup: introduce cgroup_taskset and use it in subsys->can_attach(), cancel_attach() and attach() 2011-12-12 18:12:21 -08:00
inode.c securityfs: fix object creation races 2012-01-10 10:20:35 -05:00
Kconfig encrypted-keys: remove trusted-keys dependency 2011-09-14 15:23:49 -04:00
lsm_audit.c audit: no leading space in audit_log_d_path prefix 2012-01-17 16:17:04 -05:00
Makefile integrity: move ima inode integrity data management 2011-07-18 12:29:38 -04:00
min_addr.c mmap_min_addr check CAP_SYS_RAWIO only for write 2010-04-23 08:56:31 +10:00
security.c Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security 2012-01-14 18:36:33 -08:00