keyctl_set_timeout(3) — Linux manual page

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 expiration, 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 to
       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 specified 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              The specified key has been revoked.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(3),
       keyrings(7), keyutils(7)

COLOPHON

       This page is part of the keyutils (key management utilities)
       project.  Information about the project can be found at [unknown
       -- if you know, please contact man-pages@man7.org] If you have a
       bug report for this manual page, send it to
       keyrings@linux-nfs.org.  This page was obtained from the
       project's upstream Git repository
       ⟨http://git.kernel.org/pub/scm/linux/kernel/git/dhowells/keyutils.git⟩
       on 2024-06-14.  (At that time, the date of the most recent commit
       that was found in the repository was 2023-03-20.)  If you
       discover any rendering problems in this HTML version of the page,
       or you believe there is a better or more up-to-date source for
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       manual page), send a mail to man-pages@man7.org

Linux                          4 May 2006          KEYCTL_SET_TIMEOUT(3)

Pages that refer to this page: keyctl(2), keyctl(3)

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