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audit: remove audit_finish_fork as it can't be called

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Audit entry,always rules are not allowed and are automatically changed in
exit,always rules in userspace.  The kernel refuses to load such rules.

Thus a task in the middle of a syscall (and thus in audit_finish_fork())
can only be in one of two states: AUDIT_BUILD_CONTEXT or AUDIT_DISABLED.
Since the current task cannot be in AUDIT_RECORD_CONTEXT we aren't every
going to actually use the code in audit_finish_fork() since it will
return without doing anything.  Thus drop the code.

Signed-off-by: Eric Paris <[email protected]>
This commit is contained in:
Eric Paris 2012-01-03 14:23:07 -05:00 • committed by Al Viro
commit 6422e78de6
3 changed files with 0 additions and 24 deletions
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20
kernel/auditsc.c
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@ -1707,26 +1707,6 @@ void __audit_syscall_entry(int arch, int major,
context->ppid = 0;
}
void audit_finish_fork(struct task_struct *child)
{
struct audit_context *ctx = current->audit_context;
struct audit_context *p = child->audit_context;
if (!p || !ctx)
return;
if (!ctx->in_syscall || ctx->current_state != AUDIT_RECORD_CONTEXT)
return;
p->arch = ctx->arch;
p->major = ctx->major;
memcpy(p->argv, ctx->argv, sizeof(ctx->argv));
p->ctime = ctx->ctime;
p->dummy = ctx->dummy;
p->in_syscall = ctx->in_syscall;
p->filterkey = kstrdup(ctx->filterkey, GFP_KERNEL);
p->ppid = current->pid;
p->prio = ctx->prio;
p->current_state = ctx->current_state;
}
/**
* audit_syscall_exit - deallocate audit context after a system call
* @pt_regs: syscall registers