tag	line	file	source code
fd	43	arch/alpha/boot/tools/build.c	int fd, i;
fd	85	arch/alpha/boot/tools/build.c	fd = open(infile, O_RDONLY);
fd	86	arch/alpha/boot/tools/build.c	if (fd < 0) {
fd	90	arch/alpha/boot/tools/build.c	if (read(fd, &fhdr, sizeof(struct filehdr)) != sizeof(struct filehdr))
fd	96	arch/alpha/boot/tools/build.c	if (read(fd, &ahdr, sizeof(struct aouthdr)) != sizeof(struct aouthdr))
fd	99	arch/alpha/boot/tools/build.c	if (read(fd, i+shdr, sizeof(struct scnhdr)) != sizeof(struct scnhdr))
fd	125	arch/alpha/boot/tools/build.c	if (lseek(fd, offset, SEEK_SET) != offset)
fd	132	arch/alpha/boot/tools/build.c	if (read(fd, buffer, num) != num)
fd	34	arch/i386/ibcs/binfmt_coff.c	asmlinkage int sys_close (unsigned fd);
fd	125	arch/i386/ibcs/binfmt_coff.c	int fd = -1;    /* Open file descriptor                */
fd	379	arch/i386/ibcs/binfmt_coff.c	fd = open_inode (bprm->inode, O_RDONLY);
fd	380	arch/i386/ibcs/binfmt_coff.c	if (fd < 0) {
fd	382	arch/i386/ibcs/binfmt_coff.c	printk ("can not open inode, result = %d\n", fd);
fd	384	arch/i386/ibcs/binfmt_coff.c	status = fd;
fd	387	arch/i386/ibcs/binfmt_coff.c	fp = current->files->fd[fd];
fd	390	arch/i386/ibcs/binfmt_coff.c	fd = -1;    /* Invalidate the open file descriptor */
fd	568	arch/i386/ibcs/binfmt_coff.c	if (fd >= 0)
fd	569	arch/i386/ibcs/binfmt_coff.c	sys_close (fd);    /* Close unused code file      */
fd	737	arch/i386/ibcs/binfmt_coff.c	load_coff_library (int fd)
fd	759	arch/i386/ibcs/binfmt_coff.c	file           = current->files->fd[fd];
fd	29	arch/i386/ibcs/binfmt_elf.c	asmlinkage int sys_close(unsigned fd);
fd	172	arch/i386/ibcs/binfmt_elf.c	file = current->files->fd[elf_exec_fileno];
fd	329	arch/i386/ibcs/binfmt_elf.c	file = current->files->fd[elf_exec_fileno];
fd	565	arch/i386/ibcs/binfmt_elf.c	static int load_elf_library(int fd){
fd	578	arch/i386/ibcs/binfmt_elf.c	file = current->files->fd[fd];
fd	584	arch/i386/ibcs/binfmt_elf.c	sys_close(fd);
fd	637	arch/i386/ibcs/binfmt_elf.c	sys_close(fd);
fd	1555	drivers/char/tty_io.c	filp = (*p)->files->fd[i];
fd	355	drivers/sound/configure.c	int             fd;
fd	360	drivers/sound/configure.c	if ((fd = open (path, 0)) > 0)
fd	368	drivers/sound/configure.c	count = read (fd, &c, 1);
fd	379	drivers/sound/configure.c	close (fd);
fd	45	fs/binfmt_elf.c	static int load_elf_library(int fd);
fd	201	fs/binfmt_elf.c	file = current->files->fd[elf_exec_fileno];
fd	379	fs/binfmt_elf.c	file = current->files->fd[elf_exec_fileno];
fd	653	fs/binfmt_elf.c	load_elf_library(int fd){
fd	670	fs/binfmt_elf.c	file = current->files->fd[fd];
fd	676	fs/binfmt_elf.c	SYS(close)(fd);
fd	745	fs/binfmt_elf.c	SYS(close)(fd);
fd	239	fs/buffer.c	asmlinkage int sys_fsync(unsigned int fd)
fd	244	fs/buffer.c	if (fd>=NR_OPEN || !(file=current->files->fd[fd]) || !(inode=file->f_inode))
fd	52	fs/exec.c	static int load_aout_library(int fd);
fd	106	fs/exec.c	int error, fd;
fd	114	fs/exec.c	fd = 0;
fd	115	fs/exec.c	fpp = current->files->fd;
fd	119	fs/exec.c	if (++fd > NR_OPEN)
fd	139	fs/exec.c	return fd;
fd	269	fs/exec.c	int fd, retval;
fd	273	fs/exec.c	fd = sys_open(library, 0, 0);
fd	274	fs/exec.c	if (fd < 0)
fd	275	fs/exec.c	return fd;
fd	276	fs/exec.c	file = current->files->fd[fd];
fd	283	fs/exec.c	retval = fn(fd);
fd	288	fs/exec.c	sys_close(fd);
fd	749	fs/exec.c	int fd, error;
fd	795	fs/exec.c	fd = open_inode(bprm->inode, O_RDONLY);
fd	797	fs/exec.c	if (fd < 0)
fd	798	fs/exec.c	return fd;
fd	799	fs/exec.c	file = current->files->fd[fd];
fd	801	fs/exec.c	sys_close(fd);
fd	816	fs/exec.c	sys_close(fd);
fd	825	fs/exec.c	sys_close(fd);
fd	858	fs/exec.c	static int load_aout_library(int fd)
fd	868	fs/exec.c	file = current->files->fd[fd];
fd	20	fs/fcntl.c	static int dupfd(unsigned int fd, unsigned int arg)
fd	22	fs/fcntl.c	if (fd >= NR_OPEN || !current->files->fd[fd])
fd	27	fs/fcntl.c	if (current->files->fd[arg])
fd	34	fs/fcntl.c	(current->files->fd[arg] = current->files->fd[fd])->f_count++;
fd	40	fs/fcntl.c	if (oldfd >= NR_OPEN || !current->files->fd[oldfd])
fd	66	fs/fcntl.c	asmlinkage int sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
fd	72	fs/fcntl.c	if (fd >= NR_OPEN || !(filp = current->files->fd[fd]))
fd	76	fs/fcntl.c	return dupfd(fd,arg);
fd	78	fs/fcntl.c	return FD_ISSET(fd, &current->files->close_on_exec);
fd	81	fs/fcntl.c	FD_SET(fd, &current->files->close_on_exec);
fd	83	fs/fcntl.c	FD_CLR(fd, &current->files->close_on_exec);
fd	105	fs/fcntl.c	return fcntl_getlk(fd, (struct flock *) arg);
fd	107	fs/fcntl.c	return fcntl_setlk(fd, cmd, (struct flock *) arg);
fd	109	fs/fcntl.c	return fcntl_setlk(fd, cmd, (struct flock *) arg);
fd	57	fs/ioctl.c	asmlinkage int sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
fd	62	fs/ioctl.c	if (fd >= NR_OPEN || !(filp = current->files->fd[fd]))
fd	66	fs/ioctl.c	FD_SET(fd, &current->files->close_on_exec);
fd	70	fs/ioctl.c	FD_CLR(fd, &current->files->close_on_exec);
fd	34	fs/locks.c	unsigned int fd);
fd	37	fs/locks.c	static int lock_it(struct file *filp, struct file_lock *caller, unsigned int fd);
fd	39	fs/locks.c	unsigned int fd);
fd	48	fs/locks.c	int fcntl_getlk(unsigned int fd, struct flock *l)
fd	55	fs/locks.c	if (fd >= NR_OPEN || !(filp = current->files->fd[fd]))
fd	63	fs/locks.c	if (!copy_flock(filp, &file_lock, &flock, fd))
fd	88	fs/locks.c	int fcntl_setlk(unsigned int fd, unsigned int cmd, struct flock *l)
fd	99	fs/locks.c	if (fd >= NR_OPEN || !(filp = current->files->fd[fd]))
fd	105	fs/locks.c	if (!copy_flock(filp, &file_lock, &flock, fd))
fd	162	fs/locks.c	return lock_it(filp, &file_lock, fd);
fd	200	fs/locks.c	unsigned int fd)
fd	208	fs/locks.c	while ((fl = *before) && (task != fl->fl_owner || fd != fl->fl_fd))
fd	213	fs/locks.c	while ((fl = *before) && task == fl->fl_owner && fd == fl->fl_fd)
fd	223	fs/locks.c	unsigned int fd)
fd	246	fs/locks.c	fl->fl_fd = fd;
fd	296	fs/locks.c	static int lock_it(struct file *filp, struct file_lock *caller, unsigned int fd)
fd	420	fs/locks.c	if (! (caller = alloc_lock(before, caller, fd)))
fd	430	fs/locks.c	if (! (left = alloc_lock(before, right, fd))) {
fd	452	fs/locks.c	unsigned int     fd)
fd	480	fs/locks.c	tmp->fl_fd = fd;    /* FIXME: needed? */
fd	32	fs/nfs/inode.c	extern int close_fp(struct file *filp, unsigned int fd);
fd	78	fs/nfs/inode.c	unsigned int fd;
fd	87	fs/nfs/inode.c	fd = data->fd;
fd	92	fs/nfs/inode.c	if (fd >= NR_OPEN || !(filp = current->files->fd[fd])) {
fd	22	fs/open.c	extern void fcntl_remove_locks(struct task_struct *, struct file *, unsigned int fd);
fd	49	fs/open.c	asmlinkage int sys_fstatfs(unsigned int fd, struct statfs * buf)
fd	58	fs/open.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	106	fs/open.c	asmlinkage int sys_ftruncate(unsigned int fd, unsigned int length)
fd	112	fs/open.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	223	fs/open.c	asmlinkage int sys_fchdir(unsigned int fd)
fd	228	fs/open.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	263	fs/open.c	asmlinkage int sys_fchmod(unsigned int fd, mode_t mode)
fd	269	fs/open.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	308	fs/open.c	asmlinkage int sys_fchown(unsigned int fd, uid_t user, gid_t group)
fd	314	fs/open.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	407	fs/open.c	int flag,error,fd;
fd	409	fs/open.c	for(fd=0 ; fd<NR_OPEN ; fd++)
fd	410	fs/open.c	if (!current->files->fd[fd])
fd	412	fs/open.c	if (fd>=NR_OPEN)
fd	414	fs/open.c	FD_CLR(fd,&current->files->close_on_exec);
fd	418	fs/open.c	current->files->fd[fd] = f;
fd	432	fs/open.c	current->files->fd[fd]=NULL;
fd	449	fs/open.c	current->files->fd[fd]=NULL;
fd	454	fs/open.c	return (fd);
fd	475	fs/open.c	int close_fp(struct file *filp, unsigned int fd)
fd	485	fs/open.c	fcntl_remove_locks(current, filp, fd);
fd	499	fs/open.c	asmlinkage int sys_close(unsigned int fd)
fd	503	fs/open.c	if (fd >= NR_OPEN)
fd	505	fs/open.c	FD_CLR(fd, &current->files->close_on_exec);
fd	506	fs/open.c	if (!(filp = current->files->fd[fd]))
fd	508	fs/open.c	current->files->fd[fd] = NULL;
fd	509	fs/open.c	return (close_fp (filp, fd));
fd	382	fs/pipe.c	int fd[2];
fd	397	fs/pipe.c	if (!current->files->fd[i]) {
fd	398	fs/pipe.c	current->files->fd[ fd[j]=i ] = f[j];
fd	402	fs/pipe.c	current->files->fd[fd[0]]=NULL;
fd	409	fs/pipe.c	current->files->fd[fd[0]] = NULL;
fd	410	fs/pipe.c	current->files->fd[fd[1]] = NULL;
fd	423	fs/pipe.c	put_fs_long(fd[0],0+fildes);
fd	424	fs/pipe.c	put_fs_long(fd[1],1+fildes);
fd	56	fs/proc/fd.c	unsigned int ino, pid, fd, c;
fd	86	fs/proc/fd.c	fd = 0;
fd	91	fs/proc/fd.c	fd = 0xfffff;
fd	94	fs/proc/fd.c	fd *= 10;
fd	95	fs/proc/fd.c	fd += c;
fd	96	fs/proc/fd.c	if (fd & 0xffff0000) {
fd	97	fs/proc/fd.c	fd = 0xfffff;
fd	107	fs/proc/fd.c	if (fd >= NR_OPEN || !p->files->fd[fd] || !p->files->fd[fd]->f_inode)
fd	110	fs/proc/fd.c	ino = (pid << 16) + (PROC_PID_FD_DIR << 8) + fd;
fd	121	fs/proc/fd.c	unsigned int fd, pid, ino;
fd	132	fs/proc/fd.c	fd = filp->f_pos;
fd	134	fs/proc/fd.c	if (fd < 2) {
fd	135	fs/proc/fd.c	i = j = fd+1;
fd	136	fs/proc/fd.c	if (!fd)
fd	137	fs/proc/fd.c	fd = inode->i_ino;
fd	139	fs/proc/fd.c	fd = (inode->i_ino & 0xffff0000) | PROC_PID_INO;
fd	140	fs/proc/fd.c	put_fs_long(fd, &dirent->d_ino);
fd	147	fs/proc/fd.c	fd -= 2;
fd	153	fs/proc/fd.c	if (fd >= NR_OPEN)
fd	156	fs/proc/fd.c	if (!p->files->fd[fd] || !p->files->fd[fd]->f_inode)
fd	161	fs/proc/fd.c	while (fd >= j) {
fd	166	fs/proc/fd.c	ino = (pid << 16) + (PROC_PID_FD_DIR << 8) + fd;
fd	172	fs/proc/fd.c	put_fs_byte('0'+(fd % 10), i+dirent->d_name);
fd	173	fs/proc/fd.c	fd /= 10;
fd	184	fs/proc/inode.c	if (ino >= NR_OPEN || !p->files->fd[ino])
fd	189	fs/proc/inode.c	if (p->files->fd[ino]->f_mode & 1)
fd	191	fs/proc/inode.c	if (p->files->fd[ino]->f_mode & 2)
fd	68	fs/proc/link.c	int  i, fd;
fd	72	fs/proc/link.c	for(fd=0 ; fd<NR_OPEN ; fd++)
fd	73	fs/proc/link.c	if (current->files->fd[fd] == f)
fd	75	fs/proc/link.c	if (fd>=NR_OPEN)
fd	87	fs/proc/link.c	((ino >> 8) != 1) || !(new_f = p->files->fd[ino & 0x0ff]))
fd	94	fs/proc/link.c	current->files->fd[fd] = new_f;
fd	150	fs/proc/link.c	if (ino < NR_OPEN && p->files->fd[ino]) {
fd	157	fs/proc/link.c	new_inode = p->files->fd[ino]->f_inode;
fd	25	fs/read_write.c	asmlinkage int sys_readdir(unsigned int fd, struct dirent * dirent, unsigned int count)
fd	31	fs/read_write.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]) ||
fd	46	fs/read_write.c	asmlinkage int sys_lseek(unsigned int fd, off_t offset, unsigned int origin)
fd	51	fs/read_write.c	if (fd >= NR_OPEN || !(file=current->files->fd[fd]) || !(file->f_inode))
fd	82	fs/read_write.c	asmlinkage int sys_llseek(unsigned int fd, unsigned long offset_high,
fd	91	fs/read_write.c	if (fd >= NR_OPEN || !(file=current->files->fd[fd]) || !(file->f_inode))
fd	121	fs/read_write.c	asmlinkage int sys_read(unsigned int fd,char * buf,unsigned int count)
fd	127	fs/read_write.c	if (fd>=NR_OPEN || !(file=current->files->fd[fd]) || !(inode=file->f_inode))
fd	141	fs/read_write.c	asmlinkage int sys_write(unsigned int fd,char * buf,unsigned int count)
fd	148	fs/read_write.c	if (fd>=NR_OPEN || !(file=current->files->fd[fd]) || !(inode=file->f_inode))
fd	104	fs/select.c	if (!current->files->fd[i])
fd	106	fs/select.c	if (!current->files->fd[i]->f_inode)
fd	125	fs/select.c	if (FD_ISSET(i,in) && check(SEL_IN,wait,current->files->fd[i])) {
fd	130	fs/select.c	if (FD_ISSET(i,out) && check(SEL_OUT,wait,current->files->fd[i])) {
fd	135	fs/select.c	if (FD_ISSET(i,ex) && check(SEL_EX,wait,current->files->fd[i])) {
fd	159	fs/stat.c	asmlinkage int sys_fstat(unsigned int fd, struct old_stat * statbuf)
fd	168	fs/stat.c	if (fd >= NR_OPEN || !(f=current->files->fd[fd]) || !(inode=f->f_inode))
fd	174	fs/stat.c	asmlinkage int sys_newfstat(unsigned int fd, struct new_stat * statbuf)
fd	183	fs/stat.c	if (fd >= NR_OPEN || !(f=current->files->fd[fd]) || !(inode=f->f_inode))
fd	35	include/linux/binfmts.h	int (*load_shlib)(int fd);
fd	24	include/linux/nfs_mount.h	int fd;        /* 1 */
fd	89	include/linux/sched.h	struct file * fd[NR_OPEN];
fd	20	include/linux/time.h	#define FD_SET(fd,fdsetp)  set_bit(fd,fdsetp)
fd	21	include/linux/time.h	#define FD_CLR(fd,fdsetp)  clear_bit(fd,fdsetp)
fd	22	include/linux/time.h	#define FD_ISSET(fd,fdsetp)  (0 != test_bit(fd,fdsetp))
fd	26	include/linux/time.h	#define FD_SET(fd,fdsetp)  __FD_SET(fd,fdsetp)
fd	27	include/linux/time.h	#define FD_CLR(fd,fdsetp)  __FD_CLR(fd,fdsetp)
fd	28	include/linux/time.h	#define FD_ISSET(fd,fdsetp)  __FD_ISSET(fd,fdsetp)
fd	83	include/linux/types.h	#define __FD_SET(fd,fdsetp) \
fd	85	include/linux/types.h	"=m" (*(fd_set *) (fdsetp)):"r" ((int) (fd)))
fd	88	include/linux/types.h	#define __FD_CLR(fd,fdsetp) \
fd	90	include/linux/types.h	"=m" (*(fd_set *) (fdsetp)):"r" ((int) (fd)))
fd	93	include/linux/types.h	#define __FD_ISSET(fd,fdsetp) (__extension__ ({ \
fd	96	include/linux/types.h	:"=q" (__result) :"r" ((int) (fd)), \
fd	54	init/main.c	static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
fd	55	init/main.c	static inline _syscall1(int,dup,int,fd)
fd	58	init/main.c	static inline _syscall1(int,close,int,fd)
fd	382	kernel/exit.c	if (current->files->fd[i])
fd	126	kernel/fork.c	if ((f = p->files->fd[i]) != NULL)
fd	127	kernel/fork.c	p->files->fd[i] = copy_fd(f);
fd	130	kernel/fork.c	if ((f = p->files->fd[i]) != NULL)
fd	10	lib/close.c	_syscall1(int,close,int,fd)
fd	10	lib/dup.c	_syscall1(int,dup,int,fd)
fd	11	lib/write.c	_syscall3(int,write,int,fd,const char *,buf,off_t,count)
fd	190	mm/mmap.c	unsigned long fd = get_fs_long(buffer+4);
fd	191	mm/mmap.c	if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	169	net/socket.c	int fd;
fd	180	net/socket.c	for (fd = 0; fd < NR_OPEN; ++fd)
fd	181	net/socket.c	if (!current->files->fd[fd])
fd	183	net/socket.c	if (fd == NR_OPEN)
fd	189	net/socket.c	FD_CLR(fd, &current->files->close_on_exec);
fd	190	net/socket.c	current->files->fd[fd] = file;
fd	199	net/socket.c	return(fd);
fd	230	net/socket.c	static inline struct socket *sockfd_lookup(int fd, struct file **pfile)
fd	234	net/socket.c	if (fd < 0 || fd >= NR_OPEN || !(file = current->files->fd[fd]))
fd	663	net/socket.c	int i, fd;
fd	713	net/socket.c	if ((fd = get_fd(SOCK_INODE(sock))) < 0)
fd	719	net/socket.c	return(fd);
fd	791	net/socket.c	static int sock_bind(int fd, struct sockaddr *umyaddr, int addrlen)
fd	798	net/socket.c	if (fd < 0 || fd >= NR_OPEN || current->files->fd[fd] == NULL)
fd	801	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	821	net/socket.c	static int sock_listen(int fd, int backlog)
fd	825	net/socket.c	if (fd < 0 || fd >= NR_OPEN || current->files->fd[fd] == NULL)
fd	827	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	850	net/socket.c	static int sock_accept(int fd, struct sockaddr *upeer_sockaddr, int *upeer_addrlen)
fd	858	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	860	net/socket.c	if (!(sock = sockfd_lookup(fd, &file)))
fd	891	net/socket.c	if ((fd = get_fd(SOCK_INODE(newsock))) < 0)
fd	902	net/socket.c	return(fd);
fd	911	net/socket.c	static int sock_connect(int fd, struct sockaddr *uservaddr, int addrlen)
fd	919	net/socket.c	if (fd < 0 || fd >= NR_OPEN || (file=current->files->fd[fd]) == NULL)
fd	921	net/socket.c	if (!(sock = sockfd_lookup(fd, &file)))
fd	962	net/socket.c	static int sock_getsockname(int fd, struct sockaddr *usockaddr, int *usockaddr_len)
fd	969	net/socket.c	if (fd < 0 || fd >= NR_OPEN || current->files->fd[fd] == NULL)
fd	971	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	987	net/socket.c	static int sock_getpeername(int fd, struct sockaddr *usockaddr, int *usockaddr_len)
fd	994	net/socket.c	if (fd < 0 || fd >= NR_OPEN || current->files->fd[fd] == NULL)
fd	996	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1012	net/socket.c	static int sock_send(int fd, void * buff, int len, unsigned flags)
fd	1018	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1020	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1037	net/socket.c	static int sock_sendto(int fd, void * buff, int len, unsigned flags,
fd	1045	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1047	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1072	net/socket.c	static int sock_recv(int fd, void * buff, int len, unsigned flags)
fd	1078	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1081	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1101	net/socket.c	static int sock_recvfrom(int fd, void * buff, int len, unsigned flags,
fd	1109	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1111	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1138	net/socket.c	static int sock_setsockopt(int fd, int level, int optname, char *optval, int optlen)
fd	1143	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1145	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1156	net/socket.c	static int sock_getsockopt(int fd, int level, int optname, char *optval, int *optlen)
fd	1161	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1163	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))
fd	1176	net/socket.c	static int sock_shutdown(int fd, int how)
fd	1181	net/socket.c	if (fd < 0 || fd >= NR_OPEN || ((file = current->files->fd[fd]) == NULL))
fd	1183	net/socket.c	if (!(sock = sockfd_lookup(fd, NULL)))