Eric Lee / smarc-fsl-linux-kernel

17 Jul, 2007

1 commit

  • 7d69a1f4a   remove CONFIG_UTS_NS and CONFIG_IPC_NS ... Browse Code »

    CONFIG_UTS_NS and CONFIG_IPC_NS have very little value as they only
    deactivate the unshare of the uts and ipc namespaces and do not improve
    performance.

    Signed-off-by: Cedric Le Goater
    Acked-by: "Serge E. Hallyn"
    Cc: Eric W. Biederman
    Cc: Herbert Poetzl
    Cc: Pavel Emelianov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Cedric Le Goater
     

09 May, 2007

2 commits

  • e63340ae6   header cleaning: don't include smp_lock.h when not used ... Browse Code »

    Remove includes of where it is not used/needed.
    Suggested by Al Viro.

    Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
    sparc64, and arm (all 59 defconfigs).

    Signed-off-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Randy Dunlap
     
  • e3222c4ec   Merge sys_clone()/sys_unshare() nsproxy and namespace handling ... Browse Code »

    sys_clone() and sys_unshare() both makes copies of nsproxy and its associated
    namespaces. But they have different code paths.

    This patch merges all the nsproxy and its associated namespace copy/clone
    handling (as much as possible). Posted on container list earlier for
    feedback.

    - Create a new nsproxy and its associated namespaces and pass it back to
    caller to attach it to right process.

    - Changed all copy_*_ns() routines to return a new copy of namespace
    instead of attaching it to task->nsproxy.

    - Moved the CAP_SYS_ADMIN checks out of copy_*_ns() routines.

    - Removed unnessary !ns checks from copy_*_ns() and added BUG_ON()
    just incase.

    - Get rid of all individual unshare_*_ns() routines and make use of
    copy_*_ns() instead.

    [akpm@osdl.org: cleanups, warning fix]
    [clg@fr.ibm.com: remove dup_namespaces() declaration]
    [serue@us.ibm.com: fix CONFIG_IPC_NS=n, clone(CLONE_NEWIPC) retval]
    [akpm@linux-foundation.org: fix build with CONFIG_SYSVIPC=n]
    Signed-off-by: Badari Pulavarty
    Signed-off-by: Serge Hallyn
    Cc: Cedric Le Goater
    Cc: "Eric W. Biederman"
    Cc:
    Signed-off-by: Cedric Le Goater
    Cc: Oleg Nesterov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Badari Pulavarty
     

28 Mar, 2007

1 commit

  • a28d193cb   [PATCH] ipcns: fix !CONFIG_IPC_NS behavior ... Browse Code »

    When CONFIG_IPC_NS=n, clone(CLONE_NEWIPC) claims success, but did not actually
    clone a new IPC namespace.

    Fix this to return -EINVAL so the caller knows his request was denied.

    Signed-off-by: Serge E. Hallyn
    Cc: "Eric W. Biederman"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Serge E. Hallyn
     

13 Feb, 2007

2 commits

  • 9a32144e9   [PATCH] mark struct file_operations const 7 ... Browse Code »

    Many struct file_operations in the kernel can be "const". Marking them const
    moves these to the .rodata section, which avoids false sharing with potential
    dirty data. In addition it'll catch accidental writes at compile time to
    these shared resources.

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     
  • bc1fc6d88   [PATCH] ipc: save the ipc namespace while reading proc files ... Browse Code »

    The problem we were assuming that current->nsproxy->ipc_ns would never
    change while someone has our file in /proc/sysvipc/ file open. Given that
    this can change with both unshare and by passing the file descriptor to
    another process that assumption is occasionally wrong.

    Therefore this patch causes /proc/sysvipc/* to cache the namespace and
    increment it's count when we open the file and to decrement the count when
    we close the file, ensuring consistent operation with no surprises.

    Signed-off-by: Eric W. Biederman
    Cc: Serge E. Hallyn
    Cc: Herbert Poetzl
    Cc: Kirill Korotaev
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Eric W. Biederman
     

12 Feb, 2007

1 commit

  • 72fd4a35a   [PATCH] Numerous fixes to kernel-doc info in source files. ... Browse Code »

    A variety of (mostly) innocuous fixes to the embedded kernel-doc content in
    source files, including:

    * make multi-line initial descriptions single line
    * denote some function names, constants and structs as such
    * change erroneous opening '/*' to '/**' in a few places
    * reword some text for clarity

    Signed-off-by: Robert P. J. Day
    Cc: "Randy.Dunlap"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robert P. J. Day
     

22 Nov, 2006

1 commit

  • 65f27f384   WorkStruct: Pass the work_struct pointer instead of context data ... Browse Code »

    Pass the work_struct pointer to the work function rather than context data.
    The work function can use container_of() to work out the data.

    For the cases where the container of the work_struct may go away the moment the
    pending bit is cleared, it is made possible to defer the release of the
    structure by deferring the clearing of the pending bit.

    To make this work, an extra flag is introduced into the management side of the
    work_struct. This governs auto-release of the structure upon execution.

    Ordinarily, the work queue executor would release the work_struct for further
    scheduling or deallocation by clearing the pending bit prior to jumping to the
    work function. This means that, unless the driver makes some guarantee itself
    that the work_struct won't go away, the work function may not access anything
    else in the work_struct or its container lest they be deallocated.. This is a
    problem if the auxiliary data is taken away (as done by the last patch).

    However, if the pending bit is *not* cleared before jumping to the work
    function, then the work function *may* access the work_struct and its container
    with no problems. But then the work function must itself release the
    work_struct by calling work_release().

    In most cases, automatic release is fine, so this is the default. Special
    initiators exist for the non-auto-release case (ending in _NAR).

    Signed-Off-By: David Howells

    David Howells
     

04 Nov, 2006

1 commit

  • c7e12b838   [PATCH] Fix ipc entries removal ... Browse Code »

    Fix two issuses related to ipc_ids->entries freeing.

    1. When freeing ipc namespace we need to free entries allocated
    with ipc_init_ids().

    2. When removing old entries in grow_ary() ipc_rcu_putref()
    may be called on entries set to &ids->nullentry earlier in
    ipc_init_ids().
    This is almost impossible without namespaces, but with
    them this situation becomes possible.

    Found during OpenVZ testing after obvious leaks in beancounters.

    Signed-off-by: Pavel Emelianov
    Cc: Kirill Korotaev
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Pavel Emelianov
     

02 Oct, 2006

1 commit

  • 73ea41302   [PATCH] IPC namespace - utils ... Browse Code »

    This patch adds basic IPC namespace functionality to
    IPC utils:
    - init_ipc_ns
    - copy/clone/unshare/free IPC ns
    - /proc preparations

    Signed-off-by: Pavel Emelianov
    Signed-off-by: Kirill Korotaev
    Cc: "Eric W. Biederman"
    Cc: Cedric Le Goater
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kirill Korotaev
     

01 Jul, 2006

1 commit

01 May, 2006

1 commit

  • 073115d6b   [PATCH] Rework of IPC auditing ... Browse Code »

    1) The audit_ipc_perms() function has been split into two different
    functions:
    - audit_ipc_obj()
    - audit_ipc_set_perm()

    There's a key shift here... The audit_ipc_obj() collects the uid, gid,
    mode, and SElinux context label of the current ipc object. This
    audit_ipc_obj() hook is now found in several places. Most notably, it
    is hooked in ipcperms(), which is called in various places around the
    ipc code permforming a MAC check. Additionally there are several places
    where *checkid() is used to validate that an operation is being
    performed on a valid object while not necessarily having a nearby
    ipcperms() call. In these locations, audit_ipc_obj() is called to
    ensure that the information is captured by the audit system.

    The audit_set_new_perm() function is called any time the permissions on
    the ipc object changes. In this case, the NEW permissions are recorded
    (and note that an audit_ipc_obj() call exists just a few lines before
    each instance).

    2) Support for an AUDIT_IPC_SET_PERM audit message type. This allows
    for separate auxiliary audit records for normal operations on an IPC
    object and permissions changes. Note that the same struct
    audit_aux_data_ipcctl is used and populated, however there are separate
    audit_log_format statements based on the type of the message. Finally,
    the AUDIT_IPC block of code in audit_free_aux() was extended to handle
    aux messages of this new type. No more mem leaks I hope ;-)

    Signed-off-by: Al Viro

    Steve Grubb
     

18 Apr, 2006

1 commit

01 Apr, 2006

1 commit

27 Mar, 2006

1 commit

  • 5f921ae96   [PATCH] sem2mutex: ipc, id.sem ... Browse Code »

    Semaphore to mutex conversion.

    The conversion was generated via scripts, and the result was validated
    automatically via a script as well.

    Signed-off-by: Ingo Molnar
    Cc: Manfred Spraul
    Signed-off-by: Lee Schermerhorn
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

15 Jan, 2006

1 commit

12 Jan, 2006

1 commit

  • c59ede7b7   [PATCH] move capable() to capability.h ... Browse Code »

    - Move capable() from sched.h to capability.h;

    - Use where capable() is used
    (in include/, block/, ipc/, kernel/, a few drivers/,
    mm/, security/, & sound/;
    many more drivers/ to go)

    Signed-off-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Randy.Dunlap
     

07 Nov, 2005

1 commit

  • 1e5d53314   [PATCH] more kernel-doc cleanups, additions ... Browse Code »

    Various core kernel-doc cleanups:
    - add missing function parameters in ipc, irq/manage, kernel/sys,
    kernel/sysctl, and mm/slab;
    - move description to just above function for kernel_restart()

    Signed-off-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Randy Dunlap
     

08 Sep, 2005

1 commit

  • ae7817745   [PATCH] ipc: add generic struct ipc_ids seq_file iteration ... Browse Code »

    The following two patches convert /proc/sysvipc/* to use seq_file.

    This gives us the following:

    - Self-consistent IPC records in proc.
    - O(n) reading of the files themselves.

    This patch:

    Add a generic method for ipc types to be displayed using seq_file. This
    patch abstracts out seq_file iterating over struct ipc_ids into ipc/util.c

    Signed-off-by: Mike Waychison
    Cc: Manfred Spraul
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mike Waychison
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds