30 	int fd, err;  in os_process_pc()  local
33 	fd = open(proc_stat, O_RDONLY, 0);  in os_process_pc()
34 	if (fd < 0) {  in os_process_pc()
39 	CATCH_EINTR(err = read(fd, buf, sizeof(buf)));  in os_process_pc()
45 	os_close_file(fd);  in os_process_pc()
53 	close(fd);  in os_process_pc()
62 	int parent = FAILURE_PID, n, fd;  in os_process_parent()  local
68 	fd = open(stat, O_RDONLY, 0);  in os_process_parent()
69 	if (fd < 0) {  in os_process_parent()
75 	CATCH_EINTR(n = read(fd, data, sizeof(data)));  in os_process_parent()
76 	close(fd);  in os_process_parent()
132 int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len,  in os_map_memory()  argument
142 		     fd, off);  in os_map_memory()
186 	int fd, ok = 0;  in can_drop_memory()  local
189 	fd = create_mem_file(UM_KERN_PAGE_SIZE);  in can_drop_memory()
190 	if (fd < 0) {  in can_drop_memory()
192 		       "err = %d\n", -fd);  in can_drop_memory()
197 		      MAP_SHARED, fd, 0);  in can_drop_memory()
215 	close(fd);  in can_drop_memory()