45 msg_open(struct msg_fds *fds)  in msg_open()  argument
47 	if (pipe(fds->pfd) == -1)  in msg_open()
49 	if (pipe(fds->cfd) == -1) {  in msg_open()
50 		close(fds->pfd[0]);  in msg_open()
51 		close(fds->pfd[1]);  in msg_open()
58 msg_close(struct msg_fds *fds)  in msg_close()  argument
60 	CLOSEFD(fds->pfd[0]);  in msg_close()
61 	CLOSEFD(fds->pfd[1]);  in msg_close()
62 	CLOSEFD(fds->cfd[0]);  in msg_close()
63 	CLOSEFD(fds->cfd[1]);  in msg_close()
67 msg_write_child(const char *info, struct msg_fds *fds, void *msg, size_t len)  in msg_write_child()  argument
70 	CLOSEFD(fds->cfd[1]);  in msg_write_child()
71 	CLOSEFD(fds->pfd[0]);  in msg_write_child()
74 	rv = write(fds->pfd[1], msg, len);  in msg_write_child()
78 	rv = read(fds->cfd[0], msg, len);  in msg_write_child()
85 msg_write_parent(const char *info, struct msg_fds *fds, void *msg, size_t len)  in msg_write_parent()  argument
88 	CLOSEFD(fds->pfd[1]);  in msg_write_parent()
89 	CLOSEFD(fds->cfd[0]);  in msg_write_parent()
92 	rv = write(fds->cfd[1], msg, len);  in msg_write_parent()
96 	rv = read(fds->pfd[0], msg, len);  in msg_write_parent()
103 msg_read_parent(const char *info, struct msg_fds *fds, void *msg, size_t len)  in msg_read_parent()  argument
106 	CLOSEFD(fds->pfd[1]);  in msg_read_parent()
107 	CLOSEFD(fds->cfd[0]);  in msg_read_parent()
110 	rv = read(fds->pfd[0], msg, len);  in msg_read_parent()
114 	rv = write(fds->cfd[1], msg, len);  in msg_read_parent()
121 msg_read_child(const char *info, struct msg_fds *fds, void *msg, size_t len)  in msg_read_child()  argument
124 	CLOSEFD(fds->cfd[1]);  in msg_read_child()
125 	CLOSEFD(fds->pfd[0]);  in msg_read_child()
128 	rv = read(fds->cfd[0], msg, len);  in msg_read_child()
132 	rv = write(fds->pfd[1], msg, len);  in msg_read_child()
138 #define PARENT_TO_CHILD(info, fds, msg) \  argument
139     SYSCALL_REQUIRE(msg_write_child(info " to child " # fds, &fds, &msg, \
142 #define CHILD_FROM_PARENT(info, fds, msg) \  argument
143     FORKEE_ASSERT(msg_read_parent(info " from parent " # fds, &fds, &msg, \
146 #define CHILD_TO_PARENT(info, fds, msg) \  argument
147     FORKEE_ASSERT(msg_write_parent(info " to parent " # fds, &fds, &msg, \
150 #define PARENT_FROM_CHILD(info, fds, msg) \  argument
151     SYSCALL_REQUIRE(msg_read_child(info " from parent " # fds, &fds, &msg, \