forked from Minki/linux
[PATCH] Fix docs for fs.suid_dumpable
Sergey Vlasov noticed that there is not kernel.suid_dumpable, but fs.suid_dumpable. How KERN_SETUID_DUMPABLE ended up in fs_table[]? Hell knows... Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -25,6 +25,7 @@ Currently, these files are in /proc/sys/fs:
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- inode-state
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- overflowuid
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- overflowgid
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- suid_dumpable
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- super-max
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- super-nr
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@ -131,6 +132,25 @@ The default is 65534.
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==============================================================
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suid_dumpable:
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This value can be used to query and set the core dump mode for setuid
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or otherwise protected/tainted binaries. The modes are
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0 - (default) - traditional behaviour. Any process which has changed
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privilege levels or is execute only will not be dumped
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1 - (debug) - all processes dump core when possible. The core dump is
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owned by the current user and no security is applied. This is
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intended for system debugging situations only. Ptrace is unchecked.
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2 - (suidsafe) - any binary which normally would not be dumped is dumped
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readable by root only. This allows the end user to remove
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such a dump but not access it directly. For security reasons
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core dumps in this mode will not overwrite one another or
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other files. This mode is appropriate when adminstrators are
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attempting to debug problems in a normal environment.
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==============================================================
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super-max & super-nr:
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These numbers control the maximum number of superblocks, and
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@ -50,7 +50,6 @@ show up in /proc/sys/kernel:
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- shmmax [ sysv ipc ]
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- shmmni
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- stop-a [ SPARC only ]
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- suid_dumpable
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- sysrq ==> Documentation/sysrq.txt
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- tainted
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- threads-max
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@ -310,25 +309,6 @@ kernel. This value defaults to SHMMAX.
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==============================================================
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suid_dumpable:
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This value can be used to query and set the core dump mode for setuid
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or otherwise protected/tainted binaries. The modes are
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0 - (default) - traditional behaviour. Any process which has changed
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privilege levels or is execute only will not be dumped
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1 - (debug) - all processes dump core when possible. The core dump is
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owned by the current user and no security is applied. This is
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intended for system debugging situations only. Ptrace is unchecked.
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2 - (suidsafe) - any binary which normally would not be dumped is dumped
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readable by root only. This allows the end user to remove
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such a dump but not access it directly. For security reasons
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core dumps in this mode will not overwrite one another or
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other files. This mode is appropriate when adminstrators are
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attempting to debug problems in a normal environment.
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==============================================================
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tainted:
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Non-zero if the kernel has been tainted. Numeric values, which
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