msgbuf             27 include/linux/syscalls.h struct msgbuf;
msgbuf            654 include/linux/syscalls.h asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
msgbuf            656 include/linux/syscalls.h asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
msgbuf             58 include/uapi/linux/ipc.h 	struct msgbuf __user *msgp;