kernel/fs/ctfs/ctfs_all.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #include <sys/types.h>
  29 #include <sys/param.h>
  30 #include <sys/time.h>
  31 #include <sys/cred.h>
  32 #include <sys/vfs.h>
  33 #include <sys/gfs.h>
  34 #include <sys/vnode.h>
  35 #include <sys/systm.h>
  36 #include <sys/errno.h>
  37 #include <sys/sysmacros.h>
  38 #include <sys/fs_subr.h>
  39 #include <sys/contract.h>
  40 #include <sys/contract_impl.h>
  41 #include <sys/ctfs.h>
  42 #include <sys/ctfs_impl.h>
  43 #include <sys/file.h>
  44 #include <sys/pathname.h>
  45
  46 /*
  47  * CTFS routines for the /system/contract/all vnode.
  48  */
  49
  50 static int ctfs_adir_do_readdir(vnode_t *, void *, int *, offset_t *,
  51     offset_t *, void *, int);
  52 static int ctfs_adir_do_lookup(vnode_t *, const char *, vnode_t **, ino64_t *,
  53     cred_t *, int, int *, pathname_t *);
  54
  55 /*
  56  * ctfs_create_adirnode
  57  */
  58 /* ARGSUSED */
  59 vnode_t *
  60 ctfs_create_adirnode(vnode_t *pvp)
  61 {
  62         vnode_t *vp = gfs_dir_create(sizeof (ctfs_adirnode_t), pvp,
  63             &ctfs_ops_adir, NULL, NULL, CTFS_NAME_MAX, ctfs_adir_do_readdir,
  64             ctfs_adir_do_lookup);
  65
  66         return (vp);
  67 }
  68
  69 /*
  70  * ctfs_adir_getattr - fop_getattr entry point
  71  */
  72 /* ARGSUSED */
  73 static int
  74 ctfs_adir_getattr(
  75         vnode_t *vp,
  76         vattr_t *vap,
  77         int flags,
  78         cred_t *cr,
  79         caller_context_t *ct)
  80 {
  81         int i, total;
  82
  83         vap->va_type = VDIR;
  84         vap->va_mode = 0555;
  85         for (i = 0, total = 0; i < ct_ntypes; i++)
  86                 total += contract_type_count(ct_types[i]);
  87         vap->va_nlink = 2;
  88         vap->va_size = 2 + total;
  89         vap->va_ctime.tv_sec = vp->v_vfsp->vfs_mtime;
  90         vap->va_ctime.tv_nsec = 0;
  91         vap->va_mtime = vap->va_atime = vap->va_ctime;
  92         ctfs_common_getattr(vp, vap);
  93
  94         return (0);
  95 }
  96
  97 /* ARGSUSED */
  98 static int
  99 ctfs_adir_do_lookup(vnode_t *vp, const char *nm, vnode_t **vpp, ino64_t *inop,
 100     cred_t *cr, int flags, int *deflags, pathname_t *rpnp)
 101 {
 102         int i;
 103         contract_t *ct;
 104
 105         i = stoi((char **)&nm);
 106         if (*nm != '\0')
 107                 return (ENOENT);
 108
 109         ct = contract_ptr(i, VTOZONE(vp)->zone_uniqid);
 110         if (ct == NULL)
 111                 return (ENOENT);
 112
 113         *vpp = ctfs_create_symnode(vp, ct);
 114         *inop = CTFS_INO_CT_LINK(ct->ct_id);
 115         contract_rele(ct);
 116
 117         return (0);
 118 }
 119
 120 /* ARGSUSED */
 121 static int
 122 ctfs_adir_do_readdir(vnode_t *vp, void *dp, int *eofp,
 123     offset_t *offp, offset_t *nextp, void *unused, int flags)
 124 {
 125         uint64_t zuniqid;
 126         ctid_t next;
 127         struct dirent64 *odp = dp;
 128
 129         ASSERT(!(flags & V_RDDIR_ENTFLAGS));
 130
 131         zuniqid = VTOZONE(vp)->zone_uniqid;
 132         next = contract_lookup(zuniqid, *offp);
 133
 134         if (next == -1) {
 135                 *eofp = 1;
 136                 return (0);
 137         }
 138
 139         odp->d_ino = CTFS_INO_CT_LINK(next);
 140         numtos(next, odp->d_name);
 141         *offp = next;
 142         *nextp = next + 1;
 143
 144         return (0);
 145 }
 146
 147 const struct vnodeops ctfs_ops_adir = {
 148         .vnop_name = "ctfs all directory",
 149         .vop_open = ctfs_open,
 150         .vop_close = ctfs_close,
 151         .vop_ioctl = fs_inval,
 152         .vop_getattr = ctfs_adir_getattr,
 153         .vop_access = ctfs_access_dir,
 154         .vop_readdir = gfs_vop_readdir,
 155         .vop_lookup = gfs_vop_lookup,
 156         .vop_seek = fs_seek,
 157         .vop_inactive = gfs_vop_inactive,
 158 };