diff options
Diffstat (limited to 'sys/kern/kern_descrip.c')
| -rw-r--r-- | sys/kern/kern_descrip.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index 50af8967de9f..1e7a19cdaf14 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)kern_descrip.c 8.6 (Berkeley) 4/19/94 - * $Id: kern_descrip.c,v 1.50 1998/02/06 12:13:22 eivind Exp $ + * $Id: kern_descrip.c,v 1.51 1998/02/15 04:16:59 dyson Exp $ */ #include "opt_compat.h" @@ -494,6 +494,56 @@ fstat(p, uap) } /* + * Return status information about a file descriptor. + */ +#ifndef _SYS_SYSPROTO_H_ +struct nfstat_args { + int fd; + struct nstat *sb; +}; +#endif +/* ARGSUSED */ +int +nfstat(p, uap) + struct proc *p; + register struct nfstat_args *uap; +{ + register struct filedesc *fdp = p->p_fd; + register struct file *fp; + struct stat ub; + struct nstat nub; + int error; + + if ((unsigned)uap->fd >= fdp->fd_nfiles || + (fp = fdp->fd_ofiles[uap->fd]) == NULL) + return (EBADF); + switch (fp->f_type) { + + case DTYPE_FIFO: + case DTYPE_VNODE: + error = vn_stat((struct vnode *)fp->f_data, &ub, p); + break; + + case DTYPE_SOCKET: + error = soo_stat((struct socket *)fp->f_data, &ub); + break; + + case DTYPE_PIPE: + error = pipe_stat((struct pipe *)fp->f_data, &ub); + break; + + default: + panic("fstat"); + /*NOTREACHED*/ + } + if (error == 0) { + cvtnstat(&ub, &nub); + error = copyout((caddr_t)&nub, (caddr_t)uap->sb, sizeof (nub)); + } + return (error); +} + +/* * Return pathconf information about a file descriptor. */ #ifndef _SYS_SYSPROTO_H_ |