UUID_IS_NULL(3) Programmer's Manual UUID_IS_NULL(3)
uuid_is_null - compare the value of the UUID to the NULL value
#include <uuid.h> int uuid_is_null(uuid_t uu);
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.
Theodore Y. Ts’o
uuid(3), uuid_clear(3), uuid_compare(3), uuid_copy(3), uuid_generate(3), uuid_time(3), uuid_parse(3), uuid_unparse(3)
For bug reports, use the issue tracker at https://github.com/karelzak/util-linux/issues.
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 firstname.lastname@example.org. This page was obtained from the project's upstream Git repository ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on 2021-06-20. (At that time, the date of the most recent commit that was found in the repository was 2021-06-18.) 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 the page, or you have corrections or improvements to the information in this COLOPHON (which is not part of the original manual page), send a mail to email@example.com util-linux 2.37.85-637cc 2021-04-02 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)