CentOS 7.0 - man page for keyctl_join_session_keyring (centos section 3)
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KEYCTL_JOIN_SESSION_KEYRING(3) Linux Key Management Calls KEYCTL_JOIN_SESSION_KEYRING(3)
keyctl_join_session_keyring - Join a different session keyring
key_serial_t keyctl_join_session_keyring(const char *name);
keyctl_join_session_keyring() changes the session keyring to which a process is sub-
If name is NULL then a new anonymous keyring will be created, and the process will be sub-
scribed to that.
If name points to a string, then if a keyring of that name is available, the process will
attempt to subscribe to that keyring, giving an error if that is not permitted; otherwise
a new keyring of that name is created and attached as the session keyring.
To attach to an extant named keyring, the keyring must have search permission available to
the calling process.
On success keyctl_join_session_keyring() returns the serial number of the key it found or
created. On error, the value -1 will be returned and errno will have been set to an
ENOMEM Insufficient memory to create a key.
EDQUOT The key quota for this user would be exceeded by creating this key or linking it to
EACCES The named keyring exists, but is not searchable by the calling process.
This is a library function that can be found in libkeyutils. When linking, -lkeyutils
should be specified to the linker.
Linux 4 May 2006 KEYCTL_JOIN_SESSION_KEYRING(3)
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