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Remove gotos #490

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Remove gotos #490

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c8b68f7
Remove Gotos
christianbender Nov 21, 2017
ebaba10
Update commoncap.c
christianbender Nov 21, 2017
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31 changes: 19 additions & 12 deletions security/commoncap.c
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Original file line number Diff line number Diff line change
Expand Up @@ -149,15 +149,20 @@ int cap_ptrace_access_check(struct task_struct *child, unsigned int mode)
caller_caps = &cred->cap_effective;
else
caller_caps = &cred->cap_permitted;
if (cred->user_ns == child_cred->user_ns &&
cap_issubset(child_cred->cap_permitted, *caller_caps))
goto out;
if (ns_capable(child_cred->user_ns, CAP_SYS_PTRACE))
goto out;

if ((cred->user_ns == child_cred->user_ns &&
cap_issubset(child_cred->cap_permitted, *caller_caps)) || ns_capable(child_cred->user_ns, CAP_SYS_PTRACE)) {

rcu_read_unlock();
return ret;

}

ret = -EPERM;
out:
rcu_read_unlock();
return ret;


}

/**
Expand All @@ -181,13 +186,15 @@ int cap_ptrace_traceme(struct task_struct *parent)
rcu_read_lock();
cred = __task_cred(parent);
child_cred = current_cred();
if (cred->user_ns == child_cred->user_ns &&
cap_issubset(child_cred->cap_permitted, cred->cap_permitted))
goto out;
if (has_ns_capability(parent, child_cred->user_ns, CAP_SYS_PTRACE))
goto out;
if ((cred->user_ns == child_cred->user_ns &&
cap_issubset(child_cred->cap_permitted, cred->cap_permitted)) || has_ns_capability(parent, child_cred->user_ns, CAP_SYS_PTRACE)) {

rcu_read_unlock();
return ret;

}

ret = -EPERM;
out:
rcu_read_unlock();
return ret;
}
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