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capability: Remove unused has_capability

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The vanilla has_capability() function has been unused since 2018's
commit dcb569cf6a ("Smack: ptrace capability use fixes")

Remove it.

Fixup a comment in security/commoncap.c that referenced it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Serge Hallyn <sergeh@kernel.org>
This commit is contained in:
Dr. David Alan Gilbert
2024-12-19 17:28:59 +00:00
committed by Serge Hallyn
parent 2014c95afe
commit 4ae89b1fe7
3 changed files with 5 additions and 25 deletions
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9
security/commoncap.c
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@@ -115,10 +115,11 @@ static inline int cap_capable_helper(const struct cred *cred,
* Determine whether the nominated task has the specified capability amongst
* its effective set, returning 0 if it does, -ve if it does not.
*
* NOTE WELL: cap_has_capability() cannot be used like the kernel's capable()
* and has_capability() functions. That is, it has the reverse semantics:
* cap_has_capability() returns 0 when a task has a capability, but the
* kernel's capable() and has_capability() returns 1 for this case.
* NOTE WELL: cap_capable() has reverse semantics to the capable() call
* and friends. That is cap_capable() returns an int 0 when a task has
* a capability, while the kernel's capable(), has_ns_capability(),
* has_ns_capability_noaudit(), and has_capability_noaudit() return a
* bool true (1) for this case.
*/
int cap_capable(const struct cred *cred, struct user_namespace *target_ns,
int cap, unsigned int opts)