src/afs/DARWIN/osi_inode.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9 /*
  10  * MACOS inode operations
  11  *
  12  * Implements:
  13  *
  14  */
  15 #include <afsconfig.h>
  16 #include "afs/param.h"
  17
  18
  19 #include "afs/sysincludes.h"    /* Standard vendor system headers */
  20 #include "afsincludes.h"        /* Afs-based standard headers */
  21 #include "afs/osi_inode.h"
  22 #include "afs/afs_stats.h"      /* statistics stuff */
  23 #ifndef AFS_DARWIN80_ENV
  24 #include <ufs/ufs/ufsmount.h>
  25 #endif
  26 extern struct ucred afs_osi_cred;
  27 extern int afs_CacheFSType;
  28
  29 #ifdef AFS_DARWIN80_ENV
  30 getinode(fs, dev, inode, vpp, perror)
  31     mount_t fs;
  32     vnode_t *vpp;
  33     dev_t dev;
  34     ino_t inode;
  35     int *perror;
  36 {
  37     struct vnode *vp;
  38     int code;
  39     vfs_context_t ctx;
  40     char volfspath[64];
  41
  42     *vpp = 0;
  43     *perror = 0;
  44     sprintf(volfspath, "/.vol/%d/%d", dev, inode);
  45     code = vnode_open(volfspath, O_RDWR, 0, 0, &vp, afs_osi_ctxtp);
  46     if (code) {
  47         *perror = BAD_IGET;
  48         return code;
  49     } else {
  50         *vpp = vp;
  51         return (0);
  52     }
  53 }
  54
  55
  56 igetinode(vfsp, dev, inode, vpp, va, perror)
  57     vnode_t *vpp;
  58     mount_t vfsp;
  59     dev_t dev;
  60     ino_t inode;
  61     struct vattr *va;
  62     int *perror;
  63 {
  64     vnode_t pvp, vp;
  65     extern struct osi_dev cacheDev;
  66     int code = 0;
  67
  68     *perror = 0;
  69
  70     AFS_STATCNT(igetinode);
  71     if ((code = getinode(vfsp, dev, inode, &vp, perror)) != 0) {
  72         return (code);
  73     }
  74     if (vnode_vtype(vp) != VREG && vnode_vtype(vp) != VDIR && vnode_vtype(vp) != VLNK) {
  75         vnode_close(vp, O_RDWR, afs_osi_ctxtp);
  76         printf("igetinode: bad type %d\n", vnode_vtype(vp));
  77         return (ENOENT);
  78     }
  79     VATTR_INIT(va);
  80     VATTR_WANTED(va, va_mode);
  81     VATTR_WANTED(va, va_nlink);
  82     VATTR_WANTED(va, va_size);
  83     code = vnode_getattr(vp, va, afs_osi_ctxtp);
  84     if (code) {
  85         vnode_close(vp, O_RDWR, afs_osi_ctxtp);
  86         return code;
  87     }
  88     if (!VATTR_ALL_SUPPORTED(va)) {
  89         vnode_close(vp, O_RDWR, afs_osi_ctxtp);
  90         return ENOENT;
  91     }
  92     if (va->va_mode == 0) {
  93         vnode_close(vp, O_RDWR, afs_osi_ctxtp);
  94         /* Not an allocated inode */
  95         return (ENOENT);
  96     }
  97     if (va->va_nlink == 0) {
  98         vnode_close(vp, O_RDWR, afs_osi_ctxtp);
  99         return (ENOENT);
 100     }
 101
 102     *vpp = vp;
 103     return (0);
 104 }
 105 #else
 106 getinode(fs, dev, inode, vpp, perror)
 107      struct mount *fs;
 108      struct vnode **vpp;
 109      dev_t dev;
 110      ino_t inode;
 111      int *perror;
 112 {
 113     struct vnode *vp;
 114     int code;
 115
 116     *vpp = 0;
 117     *perror = 0;
 118     if (!fs) {
 119         struct ufsmount *ump;
 120 #ifdef VFSTOHFS
 121         struct hfsmount *hmp;
 122 #endif
 123         struct vnode *vp;
 124         struct mount *mp;
 125         extern struct mount *rootfs;
 126         if (mp = rootfs)
 127             do {
 128                 /*
 129                  * XXX Also do the test for MFS
 130                  */
 131                 if (!strcmp(mp->mnt_vfc->vfc_name, "ufs")) {
 132                     ump = VFSTOUFS(mp);
 133                     if (ump->um_fs == NULL)
 134                         break;
 135                     if (ump->um_dev == dev) {
 136                         fs = ump->um_mountp;
 137                     }
 138                 }
 139 #ifdef VFSTOHFS
 140                 if (!strcmp(mp->mnt_vfc->vfc_name, "hfs")) {
 141                     hmp = VFSTOHFS(mp);
 142 #if 0
 143                     if (hmp->hfs_mp == NULL)
 144                         break;
 145 #endif
 146                     if (hmp->hfs_raw_dev == dev) {
 147                         fs = hmp->hfs_mp;
 148                     }
 149                 }
 150 #endif
 151
 152                 mp = CIRCLEQ_NEXT(mp, mnt_list);
 153             } while (mp != rootfs);
 154         if (!fs)
 155             return (ENXIO);
 156     }
 157     code = VFS_VGET(fs, (void *)inode, &vp);
 158     if (code) {
 159         *perror = BAD_IGET;
 160         return code;
 161     } else {
 162         *vpp = vp;
 163         return (0);
 164     }
 165 }
 166
 167 igetinode(vfsp, dev, inode, vpp, va, perror)
 168      struct vnode **vpp;
 169      struct mount *vfsp;
 170      dev_t dev;
 171      ino_t inode;
 172      struct vattr *va;
 173      int *perror;
 174 {
 175     struct vnode *pvp, *vp;
 176     extern struct osi_dev cacheDev;
 177     int code = 0;
 178
 179     *perror = 0;
 180
 181     AFS_STATCNT(igetinode);
 182     if ((code = getinode(vfsp, dev, inode, &vp, perror)) != 0) {
 183         return (code);
 184     }
 185     if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) {
 186         printf("igetinode: bad type %d\n", vp->v_type);
 187         iforget(vp);
 188         return (ENOENT);
 189     }
 190     VOP_GETATTR(vp, va, &afs_osi_cred, current_proc());
 191     if (va->va_mode == 0) {
 192         /* Not an allocated inode */
 193         iforget(vp);
 194         return (ENOENT);
 195     }
 196     if (vfsp && afs_CacheFSType == AFS_APPL_HFS_CACHE && va->va_nlink == 0) {
 197         printf("igetinode: hfs nlink 0\n");
 198     }
 199     if (va->va_nlink == 0) {
 200         vput(vp);
 201         return (ENOENT);
 202     }
 203
 204     VOP_UNLOCK(vp, 0, current_proc());
 205     *vpp = vp;
 206     return (0);
 207 }
 208
 209 iforget(vp)
 210      struct vnode *vp;
 211 {
 212
 213     AFS_STATCNT(iforget);
 214     /* XXX could sleep */
 215     vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, current_proc());
 216     /* this whole thing is too wierd.  Why??? XXX */
 217     if (vp->v_usecount == 1) {
 218         vp->v_usecount = 0;
 219         VOP_UNLOCK(vp, 0, current_proc());
 220 #if 0
 221         simple_lock(&vnode_free_list_slock);
 222         TAILQ_INSERT_TAIL(&vnode_free_list, vp, v_freelist);
 223         freevnodes++;
 224         simple_unlock(&vnode_free_list_slock);
 225 #else
 226         printf("iforget: leaking vnode\n");
 227 #endif
 228     } else {
 229         vput(vp);
 230     }
 231 }
 232 #endif
 233
 234 int
 235 afs_syscall_icreate(long dev, long near_inode, long param1, long param2,
 236                     long param3, long param4, long *retval)
 237 {
 238     return ENOTSUP;
 239 }
 240
 241 int
 242 afs_syscall_iopen(int dev, int inode, int usrmod, long *retval)
 243 {
 244     return ENOTSUP;
 245 }
 246
 247 int
 248 afs_syscall_iincdec(int dev, int inode, int inode_p1, int amount)
 249 {
 250     return ENOTSUP;
 251 }