09 May, 2007

1 commit

• 5096add84   proc: maps protection ... Browse Code »

  The /proc/pid/ "maps", "smaps", and "numa_maps" files contain sensitive
  information about the memory location and usage of processes. Issues:

  - maps should not be world-readable, especially if programs expect any
  kind of ASLR protection from local attackers.
  - maps cannot just be 0400 because "-D_FORTIFY_SOURCE=2 -O2" makes glibc
  check the maps when %n is in a *printf call, and a setuid(getuid())
  process wouldn't be able to read its own maps file. (For reference
  see http://lkml.org/lkml/2006/1/22/150)
  - a system-wide toggle is needed to allow prior behavior in the case of
  non-root applications that depend on access to the maps contents.

  This change implements a check using "ptrace_may_attach" before allowing
  access to read the maps contents. To control this protection, the new knob
  /proc/sys/kernel/maps_protect has been added, with corresponding updates to
  the procfs documentation.

  [akpm@linux-foundation.org: build fixes]
  [akpm@linux-foundation.org: New sysctl numbers are old hat]
  Signed-off-by: Kees Cook
  Cc: Arjan van de Ven
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Kees Cook

  2007-05-09 02:15:02 +0800  

13 Feb, 2007

1 commit

• 00977a59b   [PATCH] mark struct file_operations const 6 ... 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

  2007-02-13 01:48:45 +0800  

09 Dec, 2006

1 commit

• 2fddfeefe   [PATCH] proc: change uses of f_{dentry, vfsmnt} to use f_path ... Browse Code »

  Change all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the proc
  filesystem code.

  Signed-off-by: Josef "Jeff" Sipek
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Josef "Jeff" Sipek

  2006-12-09 00:28:41 +0800  

27 Sep, 2006

1 commit

• dbf8685c8   [PATCH] NOMMU: Implement /proc/pid/maps for NOMMU ... Browse Code »

  Implement /proc/pid/maps for NOMMU by reading the vm_area_list attached to
  current->mm->context.vmlist.

  Signed-off-by: David Howells
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  David Howells

  2006-09-27 23:26:14 +0800  

04 Jul, 2006

1 commit

• 31304c909   [PATCH] uclinux: fix proc_task()/get_proc-task() naming ... Browse Code »

  Fix changed name of proc_task() to get_proc_task().

  Signed-off-by: Greg Ungerer
  Signed-off-by: Linus Torvalds

  Greg Ungerer

  2006-07-04 13:37:13 +0800  

27 Jun, 2006

1 commit

• 662795deb   [PATCH] proc: Move proc_maps_operations into task_mmu.c ... Browse Code »

  All of the functions for proc_maps_operations are already defined in
  task_mmu.c so move the operations structure to keep the functionality
  together.

  Since task_nommu.c implements a dummy version of /proc//maps give it a
  simplified version of proc_maps_operations that it can modify to best suit its
  needs.

  Signed-off-by: Eric W. Biederman
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Eric W. Biederman

  2006-06-27 00:58:24 +0800  

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

  2005-04-17 06:20:36 +0800