* 3.10 doesn't normally use iterate for filesystems,
but it was backported in hopes of removing vfs_readdir()
* Because the romnt variable was only set for filesystems
using iterate, the su hide patches were broken for many
filesytems like ext4, which still use vfs_readdir()
instead of iterate_dir() like their mainline counterparts
* Remove the iterate check around setting romnt to fix this
Change-Id: I26426683df0fd199a80f053294f352e31754bec5
It has been claimed that the PG implementation of 'su' has security
vulnerabilities even when disabled. Unfortunately, the people that
find these vulnerabilities often like to keep them private so they
can profit from exploits while leaving users exposed to malicious
hackers.
In order to reduce the attack surface for vulnerabilites, it is
therefore necessary to make 'su' completely inaccessible when it
is not in use (except by the root and system users).
Change-Id: I79716c72f74d0b7af34ec3a8054896c6559a181d
New method - ->iterate(file, ctx). That's the replacement for ->readdir();
it takes callback from ctx->actor, uses ctx->pos instead of file->f_pos and
calls dir_emit(ctx, ...) instead of filldir(data, ...). It does *not*
update file->f_pos (or look at it, for that matter); iterate_dir() does the
update.
Note that dir_emit() takes the offset from ctx->pos (and eventually
filldir_t will lose that argument).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
iterate_dir(): new helper, replacing vfs_readdir().
struct dir_context: contains the readdir callback (and will get more stuff
in it), embedded into whatever data that callback wants to deal with;
eventually, we'll be passing it to ->readdir() replacement instead of
(data,filldir) pair.
Change-Id: Idb3843e77b97d52490b297b1f9e7d7efab18eaef
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
(cherry pick from commit 671a2781ff01abf4fdc8904881fc3abd3a8279af)
Add information about ioctl calls to the LSM audit data. Log the
file path and command number.
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Acked-by: Nick Kralevich <nnk@google.com>
[PM: subject line tweak]
Signed-off-by: Paul Moore <pmoore@redhat.com>
Bug: 22846070
Change-Id: I88a6ecdd59297a315a6fb9c82c0a798bdb6bafaa
Alberto97