linux-stable.git/fs/proc/generic.c, branch v3.18

proc: make proc_subdir_lock static

2014-08-08T22:57:22+00:00

Signed-off-by: Alexey Dobriyan 
Cc: Al Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

proc: add and remove /proc entry create checks

2014-08-08T22:57:22+00:00

* remove proc_create(NULL, ...) check, let it oops

* warn about proc_create("", ...) and proc_create("very very long name", ...)
  proc code keeps length as u8, no 256+ name length possible

* warn about proc_create("123", ...)
  /proc/$PID and /proc/misc namespaces are separate things,
  but dumb module might create funky a-la $PID entry.

* remove post mortem strchr('/') check
  Triggering it implies either strchr() is buggy or memory corruption.
  It should be VFS check anyway.

In reality, none of these checks will ever trigger,
it is preparation for the next patch.

Based on patch from Al Viro.

Signed-off-by: Alexey Dobriyan 
Cc: Al Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

proc: set attributes of pde using accessor functions

2014-01-24T00:37:01+00:00

Use existing accessors proc_set_user() and proc_set_size() to set
attributes.  Just a cleanup.

Signed-off-by: Rui Xiang 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

consolidate simple ->d_delete() instances

2013-11-16T03:04:17+00:00

Rename simple_delete_dentry() to always_delete_dentry() and export it.
Export simple_dentry_operations, while we are at it, and get rid of
their duplicates

Signed-off-by: Al Viro

proc: more readdir conversion bug-fixes

2013-08-19T23:26:12+00:00

In the previous commit, Richard Genoud fixed proc_root_readdir(), which
had lost the check for whether all of the non-process /proc entries had
been returned or not.

But that in turn exposed _another_ bug, namely that the original readdir
conversion patch had yet another problem: it had lost the return value
of proc_readdir_de(), so now checking whether it had completed
successfully or not didn't actually work right anyway.

This reinstates the non-zero return for the "end of base entries" that
had also gotten lost in commit f0c3b5093add ("[readdir] convert
procfs").  So now you get all the base entries *and* you get all the
process entries, regardless of getdents buffer size.

(Side note: the Linux "getdents" manual page actually has a nice example
application for testing getdents, which can be easily modified to use
different buffers.  Who knew? Man-pages can be useful)

Reported-by: Emmanuel Benisty 
Reported-by: Marc Dionne 
Cc: Richard Genoud 
Cc: Al Viro 
Signed-off-by: Linus Torvalds

[readdir] convert procfs

2013-06-29T08:56:32+00:00

Signed-off-by: Al Viro

proc: Make the PROC_I() and PDE() macros internal to procfs

2013-05-01T21:29:47+00:00

Make the PROC_I() and PDE() macros internal to procfs.  This means making
PDE_DATA() out of line.  This could be made more optimal by storing
PDE()->data into inode->i_private.

Also provide a __PDE_DATA() that is inline and internal to procfs.

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

proc: Supply a function to remove a proc entry by PDE

2013-05-01T21:29:46+00:00

Supply a function (proc_remove()) to remove a proc entry (and any subtree
rooted there) by proc_dir_entry pointer rather than by name and (optionally)
root dir entry pointer.  This allows us to eliminate all remaining pde->name
accesses outside of procfs.

Signed-off-by: David Howells 
Acked-by: Grant Likely 
cc: linux-acpi@vger.kernel.org
cc: openipmi-developer@lists.sourceforge.net
cc: devicetree-discuss@lists.ozlabs.org
cc: linux-pci@vger.kernel.org
cc: netdev@vger.kernel.org
cc: netfilter-devel@vger.kernel.org
cc: alsa-devel@alsa-project.org
Signed-off-by: Al Viro

proc: Supply an accessor for getting the data from a PDE's parent

2013-05-01T21:29:42+00:00

Supply an accessor function for getting the private data from the parent
proc_dir_entry struct of the proc_dir_entry struct associated with an inode.

ReiserFS, for instance, stores the super_block pointer in the proc directory
it makes for that super_block, and a pointer to the respective seq_file show
function in each of the proc files in that directory.

This allows a reduction in the number of file_operations structs, open
functions and seq_operations structs required.  The problem otherwise is that
each show function requires two pieces of data but only has storage for one
per PDE (and this has no release function).

Signed-off-by: David Howells 
Acked-by: Mauro Carvalho Chehab 
Acked-by: Greg Kroah-Hartman 
cc: Jerry Chuang 
cc: Maxim Mikityanskiy 
cc: YAMANE Toshiaki 
cc: linux-wireless@vger.kernel.org
cc: linux-scsi@vger.kernel.org
cc: devel@driverdev.osuosl.org
Signed-off-by: Al Viro

proc: Add proc_mkdir_data()

2013-05-01T21:29:41+00:00

Add proc_mkdir_data() to allow procfs directories to be created that are
annotated at the time of creation with private data rather than doing this
post-creation.  This means no access is then required to the proc_dir_entry
struct to set this.

Signed-off-by: David Howells 
Acked-by: Mauro Carvalho Chehab 
Acked-by: Greg Kroah-Hartman 
cc: Neela Syam Kolli 
cc: Jerry Chuang 
cc: linux-scsi@vger.kernel.org
cc: devel@driverdev.osuosl.org
cc: linux-wireless@vger.kernel.org
Signed-off-by: Al Viro