31 	int fd, err;  in os_process_pc()  local
34 	fd = open(proc_stat, O_RDONLY, 0);  in os_process_pc()
35 	if (fd < 0) {  in os_process_pc()
40 	CATCH_EINTR(err = read(fd, buf, sizeof(buf)));  in os_process_pc()
46 	os_close_file(fd);  in os_process_pc()
54 	close(fd);  in os_process_pc()
63 	int parent = FAILURE_PID, n, fd;  in os_process_parent()  local
69 	fd = open(stat, O_RDONLY, 0);  in os_process_parent()
70 	if (fd < 0) {  in os_process_parent()
76 	CATCH_EINTR(n = read(fd, data, sizeof(data)));  in os_process_parent()
77 	close(fd);  in os_process_parent()
138 int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len,  in os_map_memory()  argument
148 		     fd, off);  in os_map_memory()
192 	int fd, ok = 0;  in can_drop_memory()  local
195 	fd = create_mem_file(UM_KERN_PAGE_SIZE);  in can_drop_memory()
196 	if (fd < 0) {  in can_drop_memory()
198 		       "err = %d\n", -fd);  in can_drop_memory()
203 		      MAP_SHARED, fd, 0);  in can_drop_memory()
221 	close(fd);  in can_drop_memory()