key_payload_reserve

Name:key_payload_reserve - Adjust data quota reservation for the key's payload*@key: The key to make the reservation for

Proto:int key_payload_reserve(struct key *key, size_t datalen)

Type:int

Parameter:

Type	Parameter	Name
struct key *	key
size_t	datalen

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delta = datalen - payload data length * - may not match RCU dereferenced payload * - payload should contain own length

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ret = 0

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If delta != 0 && st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from Then

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maxbytes = If uid_eq(uid, GLOBAL_ROOT_UID) Then 's key space quota Else general key space quota

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spin_lock( & lock)

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If delta > 0 && ( qnbytes + delta >= maxbytes || qnbytes + delta < qnbytes ) Then

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Else

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qnbytes += delta

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length added to quota += delta

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spin_unlock( & lock)

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If ret == 0 Then payload data length * - may not match RCU dereferenced payload * - payload should contain own length = datalen

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Return ret

**Caller**
Name	Describe
generic_key_instantiate	generic_key_instantiate - Simple instantiation of a key from preparsed data@key: The key to be instantiated@prep: The preparsed data to load.* Instantiate a key from preparsed data. We assume we can just copy the data
__key_link_begin	Preallocate memory so that a key can be linked into to a keyring.
__key_link_end	Finish linking a key into to a keyring.* Must be called with __key_link_begin() having being called.
__key_unlink	Apply an unlink change.
keyring_clear	keyring_clear - Clear a keyring@keyring: The keyring to clear. Clear the contents of the specified keyring.* Returns 0 if successful or -ENOTDIR if the keyring isn't a keyring.
keyring_revoke
user_update	pdate a user defined key* - the key's semaphore is write-locked
user_revoke	dispose of the links from a revoked keyring* - called with the key sem write-locked
big_key_revoke	dispose of the links from a revoked keyring* - called with the key sem write-locked
trusted_payload_alloc
encrypted_key_alloc	Allocate memory for decrypted key and datablob.

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