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Restored ufs_pathconf() from rev.1.61. vop_stdpathconf() is too

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general to be of much use.  Using it here broke the _PC_NAME_MAX,
_PC_NO_TRUNC and _PC_PATH_MAX cases, and weakened the _PC_MAX_CANON,
_PC_MAX_INPUT and _PC_VDISABLE cases.
This commit is contained in:
Bruce Evans 1997-12-13 12:30:34 +00:00
parent fa18377023
commit 2573d99c75
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=31699
1 changed files with 41 additions and 2 deletions
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43
sys/ufs/ufs/ufs_vnops.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)ufs_vnops.c 8.27 (Berkeley) 5/27/95
* $Id: ufs_vnops.c,v 1.69 1997/11/20 16:08:56 bde Exp $
* $Id: ufs_vnops.c,v 1.70 1997/12/12 14:14:44 peter Exp $
*/
#include "opt_quota.h"
@ -50,6 +50,7 @@
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/unistd.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/dirent.h>
@ -79,6 +80,7 @@ static int ufs_mkdir __P((struct vop_mkdir_args *));
static int ufs_mknod __P((struct vop_mknod_args *));
static int ufs_mmap __P((struct vop_mmap_args *));
static int ufs_open __P((struct vop_open_args *));
static int ufs_pathconf __P((struct vop_pathconf_args *));
static int ufs_print __P((struct vop_print_args *));
static int ufs_readdir __P((struct vop_readdir_args *));
static int ufs_readlink __P((struct vop_readlink_args *));
@ -1851,6 +1853,43 @@ ufsfifo_close(ap)
return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap));
}
/*
* Return POSIX pathconf information applicable to ufs filesystems.
*/
int
ufs_pathconf(ap)
struct vop_pathconf_args /* {
struct vnode *a_vp;
int a_name;
int *a_retval;
} */ *ap;
{
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
return (0);
case _PC_NAME_MAX:
*ap->a_retval = NAME_MAX;
return (0);
case _PC_PATH_MAX:
*ap->a_retval = PATH_MAX;
return (0);
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
return (0);
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
return (0);
case _PC_NO_TRUNC:
*ap->a_retval = 1;
return (0);
default:
return (EINVAL);
}
/* NOTREACHED */
}
/*
* Advisory record locking support
*/
@ -2092,7 +2131,7 @@ static struct vnodeopv_entry_desc ufs_vnodeop_entries[] = {
{ &vop_mknod_desc, (vop_t *) ufs_mknod },
{ &vop_mmap_desc, (vop_t *) ufs_mmap },
{ &vop_open_desc, (vop_t *) ufs_open },
{ &vop_pathconf_desc, (vop_t *) vop_stdpathconf },
{ &vop_pathconf_desc, (vop_t *) ufs_pathconf },
{ &vop_print_desc, (vop_t *) ufs_print },
{ &vop_readdir_desc, (vop_t *) ufs_readdir },
{ &vop_readlink_desc, (vop_t *) ufs_readlink },