Get/set message queue attributes
#include <sys/types.h> #include <mqueue.h> int mq_getsetattr(mqd_t mqdes, struct mq_attr *newattr, struct mq_attr *oldattr);
Note: There is no glibc wrapper for this system call; see NOTES.
This interface is nonstandard; avoid its use.
Glibc does not provide a wrapper for this system call; call it using syscall(2). (Actually, never call it unless you are writing a C library!)
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