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/vfs_opreg.h>
  34 #include <sys/gfs.h>
  35 #include <sys/vnode.h>
  36 #include <sys/systm.h>
  37 #include <sys/errno.h>
  38 #include <sys/sysmacros.h>
  39 #include <fs/fs_subr.h>
  40 #include <sys/contract.h>
  41 #include <sys/contract_impl.h>
  42 #include <sys/ctfs.h>
  43 #include <sys/ctfs_impl.h>
  44 #include <sys/file.h>
  45 #include <sys/pathname.h>
  46 
  47 /*
  48  * CTFS routines for the /system/contract/all vnode.
  49  */
  50 
  51 static int ctfs_adir_do_readdir(vnode_t *, void *, int *, offset_t *,
  52     offset_t *, void *, int);
  53 static int ctfs_adir_do_lookup(vnode_t *, const char *, vnode_t **, ino64_t *,
  54     cred_t *, int, int *, pathname_t *);
  55 
  56 /*
  57  * ctfs_create_adirnode
  58  */
  59 /* ARGSUSED */
  60 vnode_t *
  61 ctfs_create_adirnode(vnode_t *pvp)
  62 {
  63         vnode_t *vp = gfs_dir_create(sizeof (ctfs_adirnode_t), pvp,
  64             ctfs_ops_adir, NULL, NULL, CTFS_NAME_MAX, ctfs_adir_do_readdir,
  65             ctfs_adir_do_lookup);
  66 
  67         return (vp);
  68 }
  69 
  70 /*
  71  * ctfs_adir_getattr - VOP_GETATTR entry point
  72  */
  73 /* ARGSUSED */
  74 static int
  75 ctfs_adir_getattr(
  76         vnode_t *vp,
  77         vattr_t *vap,
  78         int flags,
  79         cred_t *cr,
  80         caller_context_t *ct)
  81 {
  82         int i, total;
  83 
  84         vap->va_type = VDIR;
  85         vap->va_mode = 0555;
  86         for (i = 0, total = 0; i < ct_ntypes; i++)
  87                 total += contract_type_count(ct_types[i]);
  88         vap->va_nlink = 2;
  89         vap->va_size = 2 + total;
  90         vap->va_ctime.tv_sec = vp->v_vfsp->vfs_mtime;
  91         vap->va_ctime.tv_nsec = 0;
  92         vap->va_mtime = vap->va_atime = vap->va_ctime;
  93         ctfs_common_getattr(vp, vap);
  94 
  95         return (0);
  96 }
  97 
  98 /* ARGSUSED */
  99 static int
 100 ctfs_adir_do_lookup(vnode_t *vp, const char *nm, vnode_t **vpp, ino64_t *inop,
 101     cred_t *cr, int flags, int *deflags, pathname_t *rpnp)
 102 {
 103         int i;
 104         contract_t *ct;
 105 
 106         i = stoi((char **)&nm);
 107         if (*nm != '\0')
 108                 return (ENOENT);
 109 
 110         ct = contract_ptr(i, VTOZONE(vp)->zone_uniqid);
 111         if (ct == NULL)
 112                 return (ENOENT);
 113 
 114         *vpp = ctfs_create_symnode(vp, ct);
 115         *inop = CTFS_INO_CT_LINK(ct->ct_id);
 116         contract_rele(ct);
 117 
 118         return (0);
 119 }
 120 
 121 /* ARGSUSED */
 122 static int
 123 ctfs_adir_do_readdir(vnode_t *vp, void *dp, int *eofp,
 124     offset_t *offp, offset_t *nextp, void *unused, int flags)
 125 {
 126         uint64_t zuniqid;
 127         ctid_t next;
 128         struct dirent64 *odp = dp;
 129 
 130         ASSERT(!(flags & V_RDDIR_ENTFLAGS));
 131 
 132         zuniqid = VTOZONE(vp)->zone_uniqid;
 133         next = contract_lookup(zuniqid, *offp);
 134 
 135         if (next == -1) {
 136                 *eofp = 1;
 137                 return (0);
 138         }
 139 
 140         odp->d_ino = CTFS_INO_CT_LINK(next);
 141         numtos(next, odp->d_name);
 142         *offp = next;
 143         *nextp = next + 1;
 144 
 145         return (0);
 146 }
 147 
 148 const fs_operation_def_t ctfs_tops_adir[] = {
 149         { VOPNAME_OPEN,         { .vop_open = ctfs_open } },
 150         { VOPNAME_CLOSE,        { .vop_close = ctfs_close } },
 151         { VOPNAME_IOCTL,        { .error = fs_inval } },
 152         { VOPNAME_GETATTR,      { .vop_getattr = ctfs_adir_getattr } },
 153         { VOPNAME_ACCESS,       { .vop_access = ctfs_access_dir } },
 154         { VOPNAME_READDIR,      { .vop_readdir = gfs_vop_readdir } },
 155         { VOPNAME_LOOKUP,       { .vop_lookup = gfs_vop_lookup } },
 156         { VOPNAME_SEEK,         { .vop_seek = fs_seek } },
 157         { VOPNAME_INACTIVE,     { .vop_inactive = gfs_vop_inactive } },
 158         { NULL, NULL }
 159 };