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author | Eric W. Biederman <ebiederm@xmission.com> | 2007-02-12 00:52:10 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-12 09:48:29 -0800 |
commit | bc1fc6d88c646ea071de34250552051a63000d70 (patch) | |
tree | 37bf115305df3fefce7d0c68b531adfa92085d36 /.gitignore | |
parent | 79a81aef769f3a188988ad16032ccfc445cfaa13 (diff) | |
download | op-kernel-dev-bc1fc6d88c646ea071de34250552051a63000d70.zip op-kernel-dev-bc1fc6d88c646ea071de34250552051a63000d70.tar.gz |
[PATCH] ipc: save the ipc namespace while reading proc files
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 <ebiederm@xmission.com>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '.gitignore')
0 files changed, 0 insertions, 0 deletions