sys_fchown        340 include/linux/syscalls.h asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
sys_fchown        272 init/initramfs.c 				sys_fchown(wfd, uid, gid);
sys_fchown         38 kernel/uid16.c 	long ret = sys_fchown(fd, low2highuid(user), low2highgid(group));