| Function report | 
| Source Code: include\linux\key.h | Create Date:2022-07-28 05:40:21 | 
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick | 
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| Annotation kernel can get tool activity | Download SCCT | Chinese | 
Name:is_key_possessed
Proto:static inline bool is_key_possessed(const key_ref_t key_ref)
Type:bool
Parameter:
| Type | Parameter | Name | 
|---|---|---|
| const key_ref_t | key_ref | 
| 145 | Return key_ref & 1UL | 
| Name | Describe | 
|---|---|
| key_create_or_update | key_create_or_update - Update or create and instantiate a key.*@keyring_ref: A pointer to the destination keyring with possession flag.*@type: The type of key.*@description: The searchable description for the key. | 
| keyring_search_rcu | keyring_search_rcu - Search a keyring tree for a matching key under RCU*@keyring_ref: A pointer to the keyring with possession indicator | 
| find_key_to_update | Search the given keyring for a key that might be updated.* The caller must guarantee that the keyring is a keyring and that the* permission is granted to modify the keyring as no check is made here. The | 
| keyctl_read_key | Read a key's payload | 
| key_task_permission | key_task_permission - Check a key can be used*@key_ref: The key to check.*@cred: The credentials to use.*@perm: The permissions to check for.* Check to see whether permission is granted to use a key in the desired way, | 
| Source code conversion tool public plug-in interface | X | 
|---|---|
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