linux-stable.git/fs/open.c, branch v3.8

vfs: make fchownat retry once on ESTALE errors

2012-12-20T23:50:07+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

vfs: make fchmodat retry once on ESTALE errors

2012-12-20T23:50:07+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

vfs: have chroot retry once on ESTALE error

2012-12-20T23:50:06+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

vfs: have chdir retry lookup and call once on ESTALE error

2012-12-20T23:50:06+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

vfs: have faccessat retry once on an ESTALE error

2012-12-20T23:50:05+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

vfs: have do_sys_truncate retry once on an ESTALE error

2012-12-20T23:50:05+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

VFS: Make more complete truncate operation available to CacheFiles

2012-12-20T22:05:41+00:00

Make a more complete truncate operation available to CacheFiles (including
security checks and suchlike) so that it can use this to clear invalidated
cache files.

Signed-off-by: David Howells 
Acked-by: Al Viro

vfs: Allow chroot if you have CAP_SYS_CHROOT in your user namespace

2012-11-19T13:59:17+00:00

Once you are confined to a user namespace applications can not gain
privilege and escape the user namespace so there is no longer a reason
to restrict chroot.

Acked-by: Serge Hallyn 
Signed-off-by: "Eric W. Biederman"

vfs: make path_openat take a struct filename pointer

2012-10-13T00:15:09+00:00

...and fix up the callers. For do_file_open_root, just declare a
struct filename on the stack and fill out the .name field. For
do_filp_open, make it also take a struct filename pointer, and fix up its
callers to call it appropriately.

For filp_open, add a variant that takes a struct filename pointer and turn
filp_open into a wrapper around it.

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

vfs: define struct filename and have getname() return it

2012-10-13T00:14:55+00:00

getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.

For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.

This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.

Later, we'll add other information to the struct as it becomes
convenient.

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro