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path: root/security/apparmor/file.c
AgeCommit message (Collapse)Author
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-21userns: Convert apparmor to use kuid and kgid where appropriateEric W. Biederman
Cc: John Johansen <john.johansen@canonical.com> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2012-04-09LSM: do not initialize common_audit_data to 0Eric Paris
It isn't needed. If you don't set the type of the data associated with that type it is a pretty obvious programming bug. So why waste the cycles? Signed-off-by: Eric Paris <eparis@redhat.com>
2012-04-09LSM: remove the COMMON_AUDIT_DATA_INIT type expansionEric Paris
Just open code it so grep on the source code works better. Signed-off-by: Eric Paris <eparis@redhat.com>
2012-04-03LSM: shrink sizeof LSM specific portion of common_audit_dataEric Paris
Linus found that the gigantic size of the common audit data caused a big perf hit on something as simple as running stat() in a loop. This patch requires LSMs to declare the LSM specific portion separately rather than doing it in a union. Thus each LSM can be responsible for shrinking their portion and don't have to pay a penalty just because other LSMs have a bigger space requirement. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-28apparmor: Fix change_onexec when called from a confined taskJohn Johansen
Fix failure in aa_change_onexec api when the request is made from a confined task. This failure was caused by two problems The AA_MAY_ONEXEC perm was not being mapped correctly for this case. The executable name was being checked as second time instead of using the requested onexec profile name, which may not be the same as the exec profile name. This mistake can not be exploited to grant extra permission because of the above flaw where the ONEXEC permission was not being mapped so it will not be granted. BugLink: http://bugs.launchpad.net/bugs/963756 Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-03-14AppArmor: Move path failure information into aa_get_name and renameJohn Johansen
Move the path name lookup failure messages into the main path name lookup routine, as the information is useful in more than just aa_path_perm. Also rename aa_get_name to aa_path_name as it is not getting a reference counted object with a corresponding put fn. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2012-02-27AppArmor: fix mapping of META_READ to audit and quiet flagsJohn Johansen
The mapping of AA_MAY_META_READ for the allow mask was also being mapped to the audit and quiet masks. This would result in some operations being audited when the should not. This flaw was hidden by the previous audit bug which would drop some messages that where supposed to be audited. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2010-08-02AppArmor: file enforcement routinesJohn Johansen
AppArmor does files enforcement via pathname matching. Matching is done at file open using a dfa match engine. Permission is against the final file object not parent directories, ie. the traversal of directories as part of the file match is implicitly allowed. In the case of nonexistant files (creation) permissions are checked against the target file not the directory. eg. In case of creating the file /dir/new, permissions are checked against the match /dir/new not against /dir/. The permissions for matches are currently stored in the dfa accept table, but this will change to allow for dfa reuse and also to allow for sharing of wider accept states. Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>