uuid_is_null(3) — Linux manual page

UUID_IS_NULL(3)             Programmers Manual            UUID_IS_NULL(3)

NAME         top

       uuid_is_null - compare the value of the UUID to the NULL value

SYNOPSIS         top

       #include <uuid.h>

       int uuid_is_null(const uuid_t uu);

DESCRIPTION         top

       The uuid_is_null() function compares the value of the supplied
       UUID variable uu to the NULL value. If the value is equal to the
       NULL UUID, 1 is returned, otherwise 0 is returned.

AUTHORS         top

       Theodore Y. Ts’o

SEE ALSO         top

       uuid(3), uuid_clear(3), uuid_compare(3), uuid_copy(3),
       uuid_generate(3), uuid_time(3), uuid_parse(3), uuid_unparse(3)

REPORTING BUGS         top

       For bug reports, use the issue tracker
       <https://github.com/util-linux/util-linux/issues>.

AVAILABILITY         top

       The libuuid library is part of the util-linux package since
       version 2.15.1. It can be downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>. This page is
       part of the util-linux (a random collection of Linux utilities)
       project. Information about the project can be found at 
       ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
       bug report for this manual page, send it to
       util-linux@vger.kernel.org. This page was obtained from the
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       ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
       2025-08-11. (At that time, the date of the most recent commit that
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util-linux 2.42-start-521-ec46  2025-08-09                UUID_IS_NULL(3)

Pages that refer to this page: uuid(3),  uuid_clear(3),  uuid_compare(3),  uuid_copy(3),  uuid_generate(3),  uuid_parse(3),  uuid_time(3),  uuid_unparse(3)

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