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));