Function report |
Source Code:security\keys\process_keys.c |
Create Date:2022-07-28 18:22:05 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:Look up the user and user session keyrings for the current process's UID,* creating them if they don't exist.
Proto:int look_up_user_keyrings(struct key **_user_keyring, struct key **_user_session_keyring)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct key ** | _user_keyring | |
struct key ** | _user_session_keyring |
77 | cred = current_cred - Access the current task's subjective credentials* Access the subjective credentials of the current task. RCU-safe,* since nobody else can modify it.() |
78 | user_ns = current_user_ns() |
82 | uid = from_kuid(user_ns, real UID of the task ) |
91 | If IS_ERR(reg_keyring) Then Return PTR_ERR(reg_keyring) |
95 | ret = 0 |
102 | uid_keyring_r = keyring_search - Search the supplied keyring tree for a matching key*@keyring: The root of the keyring tree to be searched |
104 | kdebug("_uid %p", uid_keyring_r) |
105 | If uid_keyring_r == ERR_PTR( - EAGAIN) Then |
111 | If IS_ERR(uid_keyring) Then |
112 | ret = PTR_ERR(uid_keyring) |
113 | Go to error |
115 | Else if IS_ERR(uid_keyring_r) Then |
116 | ret = PTR_ERR(uid_keyring_r) |
117 | Go to error |
118 | Else |
124 | session_keyring_r = keyring_search - Search the supplied keyring tree for a matching key*@keyring: The root of the keyring tree to be searched |
126 | kdebug("_uid_ses %p", session_keyring_r) |
127 | If session_keyring_r == ERR_PTR( - EAGAIN) Then |
133 | If IS_ERR(session_keyring) Then |
134 | ret = PTR_ERR(session_keyring) |
135 | Go to error_release |
142 | If ret < 0 Then Go to error_release_session |
149 | If ret < 0 Then Go to error_release_session |
151 | Else if IS_ERR(session_keyring_r) Then |
152 | ret = PTR_ERR(session_keyring_r) |
153 | Go to error_release |
154 | Else |
160 | If _user_session_keyring Then _user_session_keyring = session_keyring |
164 | If _user_keyring Then _user_keyring = uid_keyring |
168 | kleave(" = 0") |
169 | Return 0 |
171 | error_release_session : |
173 | error_release : |
175 | error : |
178 | Return ret |
Name | Describe |
---|---|
lookup_user_key | Look up a key ID given us by userspace with a given permissions mask to get* the key it refers to.* Flags can be passed to request that special keyrings be created if referred* to directly, to permit partially constructed keys to be found and to skip |
init_root_keyring | Make sure that root's user and user-session keyrings exist. |
call_sbin_request_key | Request userspace finish the construction of a key* - execute "/sbin/request-key |
construct_get_dest_keyring | Get the appropriate destination keyring for the request.* The keyring selected is returned with an extra reference upon it which the* caller must release. |
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