KEYCTL_SESSION_TO_PARENT(3Linux Key Management CallKEYCTL_SESSION_TO_PARENT(3)
NAME
keyctl_session_to_parent - set the parent process's session keyring
SYNOPSIS
#include <keyutils.h>
long keyctl_session_to_parent();
DESCRIPTION
keyctl_session_to_parent() changes the session keyring to which the
calling process's parent subscribes to be the that of the calling
process.
The keyring must have link permission available to the calling process,
the parent process must have the same UIDs/GIDs as the calling process,
and the LSM must not reject the replacement. Furthermore, this may not
be used to affect init or a kernel thread.
Note that the replacement will not take immediate effect upon the par-
ent process, but will rather be deferred to the next time it returns to
userspace from kernel space.
RETURN VALUE
On success keyctl_session_to_parent() returns 0. On error, the value
-1 will be returned and errno will have been set to an appropriate er-
ror.
ERRORS
ENOMEM Insufficient memory to create a key.
EPERM The credentials of the parent don't match those of the caller.
EACCES The named keyring exists, but is not linkable by 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(3),
keyrings(7), keyutils(7), session-keyring(7), user-session-keyring(7)
Linux 20 Feb 2014 KEYCTL_SESSION_TO_PARENT(3)
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