library interfaces listed above are implemented
on top of underlying system calls of the same name.
Deviations from this scheme are indicated in the following table:
-.in +4n
+.RS
.TS
lB lB
l l.
mq_timedsend(3) mq_timedsend(2)
mq_unlink(3) mq_unlink(2)
.TE
-.in
+.RE
.SS Versions
POSIX message queues have been supported on Linux since kernel 2.6.6.
Glibc support has been provided since version 2.3.4.