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[PATCH] selinux: tracer SID fix

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Fix SELinux to not reset the tracer SID when the child is already being
traced, since selinux_ptrace is also called by proc for access checking
outside of the context of a ptrace attach.

Signed-off-by:  Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Stephen Smalley 2006-03-11 03:27:16 -08:00 committed by Linus Torvalds
parent 4136cabff3
commit 341c2d806b
1 changed files with 1 additions and 1 deletions
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2
security/selinux/hooks.c
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@ -1262,7 +1262,7 @@ static int selinux_ptrace(struct task_struct *parent, struct task_struct *child)
rc = task_has_perm(parent, child, PROCESS__PTRACE);
/* Save the SID of the tracing process for later use in apply_creds. */
if (!rc)
if (!(child->ptrace & PT_PTRACED) && !rc)
csec->ptrace_sid = psec->sid;
return rc;
}