103 lines
2.2 KiB
C
Executable File
103 lines
2.2 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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/*
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* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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* PROPRIETARY NOTICE (Combined)
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*
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* This source code is unpublished proprietary information
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* constituting, or derived under license from AT&T's UNIX(r) System V.
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* In addition, portions of such source code were derived from Berkeley
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* 4.3 BSD under license from the Regents of the University of
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* California.
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*
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*
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*
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* Copyright Notice
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*
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* Notice of copyright on this source code product does not indicate
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* publication.
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*
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* (c) 1986, 1987, 1988, 1989 Sun Microsystems, Inc
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* (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T.
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* All rights reserved.
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*
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*/
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#ident "@(#)pathconf.c 1.2 94/09/13 SMI" /* SVr4 1.103 */
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#include <sys/param.h>
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#include <sys/isa_defs.h>
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#include <sys/types.h>
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#include <sys/sysmacros.h>
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#include <sys/cred.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/pathname.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/debug.h>
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/*
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* Common code for pathconf(), fpathconf() system calls
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*/
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static int
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cpathconf(register vnode_t *vp, int cmd, struct cred *cr)
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{
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register int error;
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u_long val;
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switch (cmd) {
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case _PC_ASYNC_IO:
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case _PC_PRIO_IO:
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return (-1);
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case _PC_SYNC_IO:
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if (VOP_FSYNC(vp, FSYNC, cr) == 0)
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return (1);
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else
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return (-1);
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default:
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break;
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}
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if (error = VOP_PATHCONF(vp, cmd, &val, cr))
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return (set_errno(error));
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return (val);
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}
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/* fpathconf/pathconf interfaces */
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int
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fpathconf(int fdes, int name)
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{
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file_t *fp;
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register int retval;
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if ((fp = GETF(fdes)) == NULL)
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return (set_errno(EBADF));
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retval = cpathconf(fp->f_vnode, name, fp->f_cred);
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RELEASEF(fdes);
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return (retval);
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}
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int
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pathconf(char *fname, int name)
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{
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vnode_t *vp;
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register int retval;
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register int error;
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if (error = lookupname(fname, UIO_USERSPACE, FOLLOW, NULLVPP, &vp))
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return (set_errno(error));
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retval = cpathconf(vp, name, CRED());
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VN_RELE(vp);
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return (retval);
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}
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