keyctl(3) [centos man page]

KEYCTL(3)						    Linux Key Management Calls							 KEYCTL(3)

NAME

       keyctl_*() - Key management function wrappers

DESCRIPTION

       The  keyctl()  system  call  is	a  multiplexor	for  a number of key management functions.  These should be called via the wrappers in the
       libkeyutils library.

       The functions can be compiled in by including the keyutils header file:

	      #include <keyutils.h>

       and then telling the linker it should link in the library:

	      -lkeyutils

KEYCTL FUNCTIONS

       keyctl_assume_authority(3)
       keyctl_clear(3)
       keyctl_describe(3)
       keyctl_describe_alloc(3)
       keyctl_get_keyring_ID(3)
       keyctl_instantiate(3)
       keyctl_instantiate_iov(3)
       keyctl_invalidate(3)
       keyctl_join_session_keyring(3)
       keyctl_link(3)
       keyctl_negate(3)
       keyctl_read(3)
       keyctl_read_alloc(3)
       keyctl_reject(3)
       keyctl_revoke(3)
       keyctl_search(3)
       keyctl_security(3)
       keyctl_security_alloc(3)
       keyctl_session_to_parent(3)
       keyctl_set_reqkey_keyring(3)
       keyctl_set_timeout(3)
       keyctl_setperm(3)
       keyctl_unlink(3)
       keyctl_update(3)

UTILITY FUNCTIONS

       find_key_by_type_and_name(3)
       recursive_key_scan(3)
       recursive_session_key_scan(3)

SEE ALSO

       keyctl(1),
       add_key(2),
       keyctl(2),
       request_key(2),
       request-key(8)

Linux								    10 Sep 2013 							 KEYCTL(3)

KEYCTL_SET_TIMEOUT(3)                                       Linux Key Management Calls                                       KEYCTL_SET_TIMEOUT(3)

NAME

       keyctl_set_timeout - Set the expiration timer on a key

SYNOPSIS

       #include <keyutils.h>

       long keyctl_set_timeout(key_serial_t key, unsigned timeout);

DESCRIPTION

       keyctl_set_timeout()  sets  the  expiration timer on a key to timeout seconds into the future.  Setting timeout to zero cancels the expira-
       tion, assuming the key hasn't already expired.

       When the key expires, further attempts to access it will be met with error EKEYEXPIRED.

       The caller must have setattr permission on a key to be able change its permissions mask.

RETURN VALUE

       On success keyctl_set_timeout() returns 0 .  On error, the value -1 will be returned and errno will have been set to an appropriate error.

ERRORS

       ENOKEY The specied key does not exist.

       EKEYEXPIRED
              The specified key has already expired.

       EKEYREVOKED
              The specified key has been revoked.

       EACCES The named key exists, but does not grant setattr permission to the calling process.

LINKING

       This is a library function that can be found in libkeyutils.  When linking, -lkeyutils should be specified to the linker.

SEE ALSO

       keyctl(1),
       add_key(2),
       keyctl(2),
       request_key(2),
       keyctl_get_keyring_ID(3),
       keyctl_join_session_keyring(3),
       keyctl_update(3),
       keyctl_revoke(3),
       keyctl_chown(3),
       keyctl_setperm(3),
       keyctl_describe(3),
       keyctl_clear(3),
       keyctl_link(3),
       keyctl_unlink(3),
       keyctl_search(3),
       keyctl_read(3),
       keyctl_instantiate(3),
       keyctl_negate(3),
       keyctl_set_reqkey_keyring(3),
       keyctl_assume_authority(3),
       keyctl_describe_alloc(3),
       keyctl_read_alloc(3),
       request-key(8)

Linux                                                               4 May 2006                                               KEYCTL_SET_TIMEOUT(3)