Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/hsfs/hsfs_vfsops.c @ 2903:7679b4af04b9
4065963 RFE: Joliet Extension to ISO 9660 cdrom support (fix lint)
| author | frankho |
|---|---|
| date | Wed, 11 Oct 2006 10:19:42 -0700 |
| parents | 8188e64c9073 |
| children | 6c8662f98a22 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
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5 * Common Development and Distribution License (the "License"). |
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6 * You may not use this file except in compliance with the License. |
| 0 | 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 /* | |
| 1488 | 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. |
| 0 | 23 * Use is subject to license terms. |
| 24 */ | |
| 25 | |
| 26 #pragma ident "%Z%%M% %I% %E% SMI" | |
| 27 | |
| 28 /* | |
| 29 * VFS operations for High Sierra filesystem | |
| 30 */ | |
| 31 | |
| 32 #include <sys/types.h> | |
| 33 #include <sys/isa_defs.h> | |
| 34 #include <sys/t_lock.h> | |
| 35 #include <sys/param.h> | |
| 36 #include <sys/systm.h> | |
| 37 #include <sys/sysmacros.h> | |
| 38 #include <sys/kmem.h> | |
| 39 #include <sys/signal.h> | |
| 40 #include <sys/user.h> | |
| 41 #include <sys/proc.h> | |
| 42 #include <sys/disp.h> | |
| 43 #include <sys/buf.h> | |
| 44 #include <sys/pathname.h> | |
| 45 #include <sys/vfs.h> | |
| 46 #include <sys/vnode.h> | |
| 47 #include <sys/file.h> | |
| 48 #include <sys/uio.h> | |
| 49 #include <sys/conf.h> | |
| 50 #include <sys/policy.h> | |
| 51 | |
| 52 #include <vm/page.h> | |
| 53 | |
| 54 #include <sys/fs/snode.h> | |
| 55 #include <sys/fs/hsfs_spec.h> | |
| 56 #include <sys/fs/hsfs_isospec.h> | |
| 57 #include <sys/fs/hsfs_node.h> | |
| 58 #include <sys/fs/hsfs_impl.h> | |
| 59 #include <sys/fs/hsfs_susp.h> | |
| 60 #include <sys/fs/hsfs_rrip.h> | |
| 61 | |
| 62 #include <sys/statvfs.h> | |
| 63 #include <sys/mount.h> | |
| 64 #include <sys/mntent.h> | |
| 65 #include <sys/swap.h> | |
| 66 #include <sys/errno.h> | |
| 67 #include <sys/debug.h> | |
| 68 #include "fs/fs_subr.h" | |
| 69 #include <sys/cmn_err.h> | |
| 70 #include <sys/bootconf.h> | |
| 71 | |
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72 #include <sys/sdt.h> |
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73 |
| 0 | 74 /* |
| 75 * These are needed for the CDROMREADOFFSET Code | |
| 76 */ | |
| 77 #include <sys/cdio.h> | |
| 78 #include <sys/sunddi.h> | |
| 79 | |
| 80 #define HSFS_CLKSET | |
| 81 | |
| 82 #include <sys/modctl.h> | |
| 83 | |
| 84 /* | |
| 85 * Options for mount. | |
| 86 */ | |
| 87 #define HOPT_GLOBAL MNTOPT_GLOBAL | |
| 88 #define HOPT_NOGLOBAL MNTOPT_NOGLOBAL | |
| 89 #define HOPT_MAPLCASE "maplcase" | |
| 90 #define HOPT_NOMAPLCASE "nomaplcase" | |
| 91 #define HOPT_NOTRAILDOT "notraildot" | |
| 92 #define HOPT_TRAILDOT "traildot" | |
| 93 #define HOPT_NRR "nrr" | |
| 94 #define HOPT_RR "rr" | |
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95 #define HOPT_JOLIET "joliet" |
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96 #define HOPT_NOJOLIET "nojoliet" |
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97 #define HOPT_JOLIETLONG "jolietlong" |
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98 #define HOPT_VERS2 "vers2" |
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99 #define HOPT_NOVERS2 "novers2" |
| 0 | 100 #define HOPT_RO MNTOPT_RO |
| 101 | |
| 102 static char *global_cancel[] = { HOPT_NOGLOBAL, NULL }; | |
| 103 static char *noglobal_cancel[] = { HOPT_GLOBAL, NULL }; | |
| 104 static char *mapl_cancel[] = { HOPT_NOMAPLCASE, NULL }; | |
| 105 static char *nomapl_cancel[] = { HOPT_MAPLCASE, NULL }; | |
| 106 static char *ro_cancel[] = { MNTOPT_RW, NULL }; | |
| 107 static char *rr_cancel[] = { HOPT_NRR, NULL }; | |
| 108 static char *nrr_cancel[] = { HOPT_RR, NULL }; | |
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109 static char *joliet_cancel[] = { HOPT_NOJOLIET, NULL }; |
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110 static char *nojoliet_cancel[] = { HOPT_JOLIET, NULL }; |
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111 static char *vers2_cancel[] = { HOPT_NOVERS2, NULL }; |
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112 static char *novers2_cancel[] = { HOPT_VERS2, NULL }; |
| 0 | 113 static char *trail_cancel[] = { HOPT_NOTRAILDOT, NULL }; |
| 114 static char *notrail_cancel[] = { HOPT_TRAILDOT, NULL }; | |
| 115 | |
| 116 static mntopt_t hsfs_options[] = { | |
| 117 { HOPT_GLOBAL, global_cancel, NULL, 0, NULL }, | |
| 118 { HOPT_NOGLOBAL, noglobal_cancel, NULL, MO_DEFAULT, NULL }, | |
| 119 { HOPT_MAPLCASE, mapl_cancel, NULL, MO_DEFAULT, NULL }, | |
| 120 { HOPT_NOMAPLCASE, nomapl_cancel, NULL, 0, NULL }, | |
| 121 { HOPT_RO, ro_cancel, NULL, MO_DEFAULT, NULL }, | |
| 122 { HOPT_RR, rr_cancel, NULL, MO_DEFAULT, NULL }, | |
| 123 { HOPT_NRR, nrr_cancel, NULL, 0, NULL }, | |
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124 { HOPT_JOLIET, joliet_cancel, NULL, 0, NULL }, |
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125 { HOPT_NOJOLIET, nojoliet_cancel, NULL, 0, NULL }, |
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126 { HOPT_JOLIETLONG, NULL, NULL, 0, NULL }, |
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127 { HOPT_VERS2, vers2_cancel, NULL, 0, NULL }, |
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128 { HOPT_NOVERS2, novers2_cancel, NULL, 0, NULL }, |
| 0 | 129 { HOPT_TRAILDOT, trail_cancel, NULL, MO_DEFAULT, NULL }, |
| 130 { HOPT_NOTRAILDOT, notrail_cancel, NULL, 0, NULL }, | |
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131 { "sector", NULL, "0", MO_HASVALUE, NULL}, |
| 0 | 132 }; |
| 133 | |
| 134 static mntopts_t hsfs_proto_opttbl = { | |
| 135 sizeof (hsfs_options) / sizeof (mntopt_t), | |
| 136 hsfs_options | |
| 137 }; | |
| 138 | |
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139 static int hsfsfstype; |
| 0 | 140 static int hsfsinit(int, char *); |
| 141 | |
| 142 static vfsdef_t vfw = { | |
| 143 VFSDEF_VERSION, | |
| 144 "hsfs", | |
| 145 hsfsinit, | |
| 1488 | 146 VSW_HASPROTO|VSW_STATS, /* We don't suppport remounting */ |
| 0 | 147 &hsfs_proto_opttbl |
| 148 }; | |
| 149 | |
| 150 static struct modlfs modlfs = { | |
| 151 &mod_fsops, "filesystem for HSFS", &vfw | |
| 152 }; | |
| 153 | |
| 154 static struct modlinkage modlinkage = { | |
| 155 MODREV_1, (void *)&modlfs, NULL | |
| 156 }; | |
| 157 | |
| 158 char _depends_on[] = "fs/specfs"; | |
| 159 | |
| 160 int | |
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161 _init(void) |
| 0 | 162 { |
| 163 return (mod_install(&modlinkage)); | |
| 164 } | |
| 165 | |
| 166 int | |
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167 _fini(void) |
| 0 | 168 { |
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169 int error; |
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170 |
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171 error = mod_remove(&modlinkage); |
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172 |
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173 DTRACE_PROBE1(mod_remove, int, error); |
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174 |
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175 if (error) |
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176 return (error); |
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177 |
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178 mutex_destroy(&hs_mounttab_lock); |
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179 |
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180 /* |
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181 * Tear down the operations vectors |
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182 */ |
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183 (void) vfs_freevfsops_by_type(hsfsfstype); |
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184 vn_freevnodeops(hsfs_vnodeops); |
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185 |
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186 hs_fini_hsnode_cache(); |
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187 return (0); |
| 0 | 188 } |
| 189 | |
| 190 int | |
| 191 _info(struct modinfo *modinfop) | |
| 192 { | |
| 193 return (mod_info(&modlinkage, modinfop)); | |
| 194 } | |
| 195 | |
| 196 #define BDEVFLAG(dev) ((devopsp[getmajor(dev)])->devo_cb_ops->cb_flag) | |
| 197 | |
| 198 kmutex_t hs_mounttab_lock; | |
| 199 struct hsfs *hs_mounttab = NULL; | |
| 200 | |
| 201 /* default mode, uid, gid */ | |
| 202 mode_t hsfs_default_mode = 0555; | |
| 203 uid_t hsfs_default_uid = 0; | |
| 204 gid_t hsfs_default_gid = 3; | |
| 205 | |
| 206 static int hsfs_mount(struct vfs *vfsp, struct vnode *mvp, | |
| 207 struct mounta *uap, struct cred *cr); | |
| 208 static int hsfs_unmount(struct vfs *vfsp, int, struct cred *cr); | |
| 209 static int hsfs_root(struct vfs *vfsp, struct vnode **vpp); | |
| 210 static int hsfs_statvfs(struct vfs *vfsp, struct statvfs64 *sbp); | |
| 211 static int hsfs_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp); | |
| 212 static int hsfs_mountroot(struct vfs *, enum whymountroot); | |
| 213 | |
| 214 static int hs_mountfs(struct vfs *vfsp, dev_t dev, char *path, | |
| 215 mode_t mode, int flags, struct cred *cr, int isroot); | |
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216 static int hs_getrootvp(struct vfs *vfsp, struct hsfs *fsp, size_t pathsize); |
| 0 | 217 static int hs_findhsvol(struct hsfs *fsp, struct vnode *vp, |
| 218 struct hs_volume *hvp); | |
| 219 static int hs_parsehsvol(struct hsfs *fsp, uchar_t *volp, | |
| 220 struct hs_volume *hvp); | |
| 221 static int hs_findisovol(struct hsfs *fsp, struct vnode *vp, | |
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222 struct hs_volume *hvp, |
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223 struct hs_volume *svp, |
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224 struct hs_volume *jvp); |
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225 static int hs_joliet_level(uchar_t *volp); |
| 0 | 226 static int hs_parseisovol(struct hsfs *fsp, uchar_t *volp, |
| 227 struct hs_volume *hvp); | |
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228 static void hs_copylabel(struct hs_volume *, unsigned char *, int); |
| 0 | 229 static int hs_getmdev(struct vfs *, char *fspec, int flags, dev_t *pdev, |
| 230 mode_t *mode, cred_t *cr); | |
| 231 static int hs_findvoldesc(dev_t rdev, int desc_sec); | |
| 232 | |
| 233 static int | |
| 234 hsfsinit(int fstype, char *name) | |
| 235 { | |
| 236 static const fs_operation_def_t hsfs_vfsops_template[] = { | |
| 237 VFSNAME_MOUNT, hsfs_mount, | |
| 238 VFSNAME_UNMOUNT, hsfs_unmount, | |
| 239 VFSNAME_ROOT, hsfs_root, | |
| 240 VFSNAME_STATVFS, hsfs_statvfs, | |
| 241 VFSNAME_VGET, hsfs_vget, | |
| 242 VFSNAME_MOUNTROOT, hsfs_mountroot, | |
| 243 NULL, NULL | |
| 244 }; | |
| 245 int error; | |
| 246 | |
| 247 error = vfs_setfsops(fstype, hsfs_vfsops_template, NULL); | |
| 248 if (error != 0) { | |
| 249 cmn_err(CE_WARN, "hsfsinit: bad vfs ops template"); | |
| 250 return (error); | |
| 251 } | |
| 252 | |
| 253 error = vn_make_ops(name, hsfs_vnodeops_template, &hsfs_vnodeops); | |
| 254 if (error != 0) { | |
| 255 (void) vfs_freevfsops_by_type(fstype); | |
| 256 cmn_err(CE_WARN, "hsfsinit: bad vnode ops template"); | |
| 257 return (error); | |
| 258 } | |
| 259 | |
| 260 hsfsfstype = fstype; | |
| 261 mutex_init(&hs_mounttab_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 262 hs_init_hsnode_cache(); | |
| 263 return (0); | |
| 264 } | |
| 265 | |
| 266 /*ARGSUSED*/ | |
| 267 static int | |
| 268 hsfs_mount(struct vfs *vfsp, struct vnode *mvp, | |
| 269 struct mounta *uap, struct cred *cr) | |
| 270 { | |
| 271 int vnode_busy; | |
| 272 dev_t dev; | |
| 273 struct pathname dpn; | |
| 274 int error; | |
| 275 mode_t mode; | |
| 276 int flags; /* this will hold the mount specific data */ | |
| 277 | |
| 278 if ((error = secpolicy_fs_mount(cr, mvp, vfsp)) != 0) | |
| 279 return (error); | |
| 280 | |
| 281 if (mvp->v_type != VDIR) | |
| 282 return (ENOTDIR); | |
| 283 | |
| 284 /* mount option must be read only, else mount will be rejected */ | |
| 285 if (!(uap->flags & MS_RDONLY)) | |
| 286 return (EROFS); | |
| 287 | |
| 288 /* | |
| 289 * We already told the framework that we don't support remounting. | |
| 290 */ | |
| 291 ASSERT(!(uap->flags & MS_REMOUNT)); | |
| 292 | |
| 293 mutex_enter(&mvp->v_lock); | |
| 294 vnode_busy = (mvp->v_count != 1) || (mvp->v_flag & VROOT); | |
| 295 mutex_exit(&mvp->v_lock); | |
| 296 | |
| 297 if ((uap->flags & MS_OVERLAY) == 0 && vnode_busy) { | |
| 298 return (EBUSY); | |
| 299 } | |
| 300 | |
| 301 /* | |
| 302 * Check for the options that actually affect things | |
| 303 * at our level. | |
| 304 */ | |
| 305 flags = 0; | |
| 306 if (vfs_optionisset(vfsp, HOPT_NOMAPLCASE, NULL)) | |
| 307 flags |= HSFSMNT_NOMAPLCASE; | |
| 308 if (vfs_optionisset(vfsp, HOPT_NOTRAILDOT, NULL)) | |
| 309 flags |= HSFSMNT_NOTRAILDOT; | |
| 310 if (vfs_optionisset(vfsp, HOPT_NRR, NULL)) | |
| 311 flags |= HSFSMNT_NORRIP; | |
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312 if (vfs_optionisset(vfsp, HOPT_NOJOLIET, NULL)) |
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313 flags |= HSFSMNT_NOJOLIET; |
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314 if (vfs_optionisset(vfsp, HOPT_JOLIETLONG, NULL)) |
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315 flags |= HSFSMNT_JOLIETLONG; |
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316 if (vfs_optionisset(vfsp, HOPT_NOVERS2, NULL)) |
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317 flags |= HSFSMNT_NOVERS2; |
| 0 | 318 |
| 319 error = pn_get(uap->dir, (uap->flags & MS_SYSSPACE) ? | |
| 320 UIO_SYSSPACE : UIO_USERSPACE, &dpn); | |
| 321 if (error) | |
| 322 return (error); | |
| 323 | |
| 324 if ((error = hs_getmdev(vfsp, uap->spec, uap->flags, &dev, | |
| 325 &mode, cr)) != 0) { | |
| 326 pn_free(&dpn); | |
| 327 return (error); | |
| 328 } | |
| 329 | |
| 330 /* | |
| 331 * If the device is a tape, return error | |
| 332 */ | |
| 333 if ((BDEVFLAG(dev) & D_TAPE) == D_TAPE) { | |
| 334 pn_free(&dpn); | |
| 335 return (ENOTBLK); | |
| 336 } | |
| 337 | |
| 338 /* | |
| 339 * Mount the filesystem. | |
| 340 */ | |
| 341 error = hs_mountfs(vfsp, dev, dpn.pn_path, mode, flags, cr, 0); | |
| 342 pn_free(&dpn); | |
| 343 return (error); | |
| 344 } | |
| 345 | |
| 346 /*ARGSUSED*/ | |
| 347 static int | |
| 348 hsfs_unmount( | |
| 349 struct vfs *vfsp, | |
| 350 int flag, | |
| 351 struct cred *cr) | |
| 352 { | |
| 353 struct hsfs **tspp; | |
| 354 struct hsfs *fsp; | |
| 355 | |
| 356 if (secpolicy_fs_unmount(cr, vfsp) != 0) | |
| 357 return (EPERM); | |
| 358 | |
| 359 /* | |
| 360 * forced unmount is not supported by this file system | |
| 361 * and thus, ENOTSUP is being returned. | |
| 362 */ | |
| 363 if (flag & MS_FORCE) | |
| 364 return (ENOTSUP); | |
| 365 | |
| 366 fsp = VFS_TO_HSFS(vfsp); | |
| 367 | |
| 368 if (fsp->hsfs_rootvp->v_count != 1) | |
| 369 return (EBUSY); | |
| 370 | |
| 371 /* destroy all old pages and hsnodes for this vfs */ | |
| 372 if (hs_synchash(vfsp)) | |
| 373 return (EBUSY); | |
| 374 | |
| 375 mutex_enter(&hs_mounttab_lock); | |
| 376 for (tspp = &hs_mounttab; *tspp != NULL; tspp = &(*tspp)->hsfs_next) { | |
| 377 if (*tspp == fsp) | |
| 378 break; | |
| 379 } | |
| 380 if (*tspp == NULL) { | |
| 381 mutex_exit(&hs_mounttab_lock); | |
| 382 panic("hsfs_unmount: vfs not mounted?"); | |
| 383 /*NOTREACHED*/ | |
| 384 } | |
| 385 | |
| 386 *tspp = fsp->hsfs_next; | |
| 387 | |
| 388 mutex_exit(&hs_mounttab_lock); | |
| 389 | |
| 390 (void) VOP_CLOSE(fsp->hsfs_devvp, FREAD, 1, (offset_t)0, cr); | |
| 391 VN_RELE(fsp->hsfs_devvp); | |
| 392 /* free path table space */ | |
| 393 if (fsp->hsfs_ptbl != NULL) | |
| 394 kmem_free(fsp->hsfs_ptbl, | |
| 395 (size_t)fsp->hsfs_vol.ptbl_len); | |
| 396 /* free path table index table */ | |
| 397 if (fsp->hsfs_ptbl_idx != NULL) | |
| 398 kmem_free(fsp->hsfs_ptbl_idx, (size_t) | |
| 399 (fsp->hsfs_ptbl_idx_size * sizeof (struct ptable_idx))); | |
| 400 | |
| 401 /* free "mounted on" pathame */ | |
| 402 if (fsp->hsfs_fsmnt != NULL) | |
| 403 kmem_free(fsp->hsfs_fsmnt, strlen(fsp->hsfs_fsmnt) + 1); | |
| 404 | |
| 405 mutex_destroy(&fsp->hsfs_free_lock); | |
| 406 rw_destroy(&fsp->hsfs_hash_lock); | |
| 407 | |
| 408 kmem_free(fsp, sizeof (*fsp)); | |
| 409 return (0); | |
| 410 } | |
| 411 | |
| 412 /*ARGSUSED*/ | |
| 413 static int | |
| 414 hsfs_root(struct vfs *vfsp, struct vnode **vpp) | |
| 415 { | |
| 416 *vpp = (VFS_TO_HSFS(vfsp))->hsfs_rootvp; | |
| 417 VN_HOLD(*vpp); | |
| 418 return (0); | |
| 419 } | |
| 420 | |
| 421 /*ARGSUSED*/ | |
| 422 static int | |
| 423 hsfs_statvfs(struct vfs *vfsp, struct statvfs64 *sbp) | |
| 424 { | |
| 425 struct hsfs *fsp; | |
| 426 dev32_t d32; | |
| 427 | |
| 428 fsp = VFS_TO_HSFS(vfsp); | |
| 429 if (fsp->hsfs_magic != HSFS_MAGIC) | |
| 430 return (EINVAL); | |
| 431 bzero(sbp, sizeof (*sbp)); | |
| 432 sbp->f_bsize = vfsp->vfs_bsize; | |
| 433 sbp->f_frsize = sbp->f_bsize; /* no fragment, same as block size */ | |
| 434 sbp->f_blocks = (fsblkcnt64_t)fsp->hsfs_vol.vol_size; | |
| 435 | |
| 436 sbp->f_bfree = (fsblkcnt64_t)0; | |
| 437 sbp->f_bavail = (fsblkcnt64_t)0; | |
| 438 sbp->f_files = (fsfilcnt64_t)-1; | |
| 439 sbp->f_ffree = (fsfilcnt64_t)0; | |
| 440 sbp->f_favail = (fsfilcnt64_t)0; | |
| 441 (void) cmpldev(&d32, vfsp->vfs_dev); | |
| 442 sbp->f_fsid = d32; | |
| 443 (void) strcpy(sbp->f_basetype, vfssw[vfsp->vfs_fstype].vsw_name); | |
| 444 sbp->f_flag = vf_to_stf(vfsp->vfs_flag); | |
| 445 sbp->f_namemax = fsp->hsfs_namemax; | |
| 446 (void) strcpy(sbp->f_fstr, fsp->hsfs_vol.vol_id); | |
| 447 | |
| 448 return (0); | |
| 449 } | |
| 450 | |
| 451 /* | |
| 452 * Previously nodeid was declared as uint32_t. This has been changed | |
| 453 * to conform better with the ISO9660 standard. The standard states that | |
| 454 * a LBN can be a 32 bit number, as the MAKE_NODEID macro shifts this | |
| 455 * LBN 11 places left (LBN_TO_BYTE) and then shifts the result 5 right | |
| 456 * (divide by 32) we are left with the potential of an overflow if | |
| 457 * confined to a 32 bit value. | |
| 458 */ | |
| 459 | |
| 460 static int | |
| 461 hsfs_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp) | |
| 462 { | |
| 463 struct hsfid *fid; | |
| 464 struct hsfs *fsp; | |
| 465 ino64_t nodeid; | |
| 466 int error; | |
| 467 | |
| 468 fsp = (struct hsfs *)VFS_TO_HSFS(vfsp); | |
| 469 fid = (struct hsfid *)fidp; | |
| 470 | |
| 471 /* | |
| 472 * Look for vnode on hashlist. | |
| 473 * If found, it's now active and the refcnt was incremented. | |
| 474 */ | |
| 475 | |
| 476 rw_enter(&fsp->hsfs_hash_lock, RW_READER); | |
| 477 | |
| 478 nodeid = (ino64_t)MAKE_NODEID(fid->hf_dir_lbn, fid->hf_dir_off, vfsp); | |
| 479 | |
| 480 if ((*vpp = hs_findhash(nodeid, vfsp)) == NULL) { | |
| 481 /* | |
| 482 * Not in cache, so we need to remake it. | |
| 483 * hs_remakenode() will read the directory entry | |
| 484 * and then check again to see if anyone else has | |
| 485 * put it in the cache. | |
| 486 */ | |
| 487 rw_exit(&fsp->hsfs_hash_lock); | |
| 488 error = hs_remakenode(fid->hf_dir_lbn, (uint_t)fid->hf_dir_off, | |
| 489 vfsp, vpp); | |
| 490 return (error); | |
| 491 } | |
| 492 rw_exit(&fsp->hsfs_hash_lock); | |
| 493 return (0); | |
| 494 } | |
| 495 | |
| 496 | |
| 497 #define CHECKSUM_SIZE (64 * 1024) | |
| 498 | |
| 499 /* | |
| 500 * Compute a CD-ROM fsid by checksumming the first 64K of data on the CD | |
| 501 * We use the 'fsp' argument to determine the location of the root | |
| 502 * directory entry, and we start reading from there. | |
| 503 */ | |
| 504 static int | |
| 505 compute_cdrom_id(struct hsfs *fsp, vnode_t *devvp) | |
| 506 { | |
| 507 uint_t secno; | |
| 508 struct hs_volume *hsvp = &fsp->hsfs_vol; | |
| 509 struct buf *bp; | |
| 510 int error; | |
| 511 int fsid; | |
| 512 | |
| 513 secno = hsvp->root_dir.ext_lbn >> hsvp->lbn_secshift; | |
|
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514 bp = bread(devvp->v_rdev, secno * 4, CHECKSUM_SIZE); |
| 0 | 515 error = geterror(bp); |
|
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516 |
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517 /* |
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518 * An error on read or a partial read means we asked |
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519 * for a nonexistant/corrupted piece of the device |
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520 * (including past-the-end of the media). Don't |
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521 * try to use the checksumming method then. |
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522 */ |
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523 if (!error && bp->b_bcount == CHECKSUM_SIZE) { |
| 0 | 524 int *ibuf = (int *)bp->b_un.b_addr; |
| 525 int i; | |
| 526 | |
| 527 fsid = 0; | |
| 528 | |
|
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529 for (i = 0; i < CHECKSUM_SIZE / sizeof (int); i++) |
| 0 | 530 fsid ^= ibuf[ i ]; |
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531 } else { |
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532 /* |
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533 * Fallback - use creation date |
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534 */ |
| 0 | 535 fsid = hsvp->cre_date.tv_sec; |
|
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536 } |
| 0 | 537 |
| 538 brelse(bp); | |
| 539 | |
| 540 return (fsid); | |
| 541 } | |
| 542 | |
| 543 | |
| 544 /*ARGSUSED*/ | |
| 545 static int | |
| 546 hs_mountfs( | |
| 547 struct vfs *vfsp, | |
| 548 dev_t dev, | |
| 549 char *path, | |
| 550 mode_t mode, | |
| 551 int mount_flags, | |
| 552 struct cred *cr, | |
| 553 int isroot) | |
| 554 { | |
| 555 struct vnode *devvp; | |
| 556 struct hsfs *tsp; | |
| 557 struct hsfs *fsp = NULL; | |
| 558 struct vattr vap; | |
| 559 struct hsnode *hp; | |
| 560 int error; | |
| 561 struct timeval tv; | |
| 562 int fsid; | |
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563 int use_rrip; |
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564 int use_vers2; |
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565 int use_joliet; |
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566 int has_rrip = 0; |
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567 int has_vers2 = 0; |
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568 int has_joliet = 0; |
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569 int force_rrip_off; |
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570 int force_vers2_off; |
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571 int force_joliet_off; |
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572 size_t pathbufsz = strlen(path) + 1; |
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573 int redo_rootvp; |
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574 |
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575 struct hs_volume *svp; /* Supplemental VD for ISO-9660:1999 */ |
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576 struct hs_volume *jvp; /* Joliet VD */ |
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577 |
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578 /* |
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579 * The rules for which extension will be used are: |
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580 * 1. No specific mount options given: |
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581 * - use rrip if available |
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582 * - use ISO9660:1999 if available |
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583 * - use joliet if available. |
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584 * 2. rrip/ISO9660:1999/joliet explicitly disabled via mount option: |
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585 * - use next "lower" extension |
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586 * 3. joliet/ISO9660:1999/rrip explicitly requested via mount option: |
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587 * - disable rrip support even if available |
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588 * - disable IOS9660:1999 support even if available |
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589 * |
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590 * We need to adjust these flags as we discover the extensions |
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591 * present. See below. These are just the starting values. |
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592 */ |
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593 use_rrip = (mount_flags & HSFSMNT_NORRIP) == 0; |
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594 use_vers2 = (mount_flags & HSFSMNT_NOVERS2) == 0; |
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595 use_joliet = (mount_flags & HSFSMNT_NOJOLIET) == 0; |
| 0 | 596 |
| 597 /* | |
| 598 * Open the device | |
| 599 */ | |
| 600 devvp = makespecvp(dev, VBLK); | |
| 601 ASSERT(devvp != 0); | |
| 602 | |
| 603 /* | |
| 604 * Open the target device (file) for read only. | |
| 605 */ | |
| 606 if (error = VOP_OPEN(&devvp, FREAD, cr)) { | |
| 607 VN_RELE(devvp); | |
| 608 return (error); | |
| 609 } | |
| 610 | |
| 611 /* | |
| 612 * Refuse to go any further if this | |
| 613 * device is being used for swapping | |
| 614 */ | |
| 615 if (IS_SWAPVP(common_specvp(devvp))) { | |
| 616 error = EBUSY; | |
| 617 goto cleanup; | |
| 618 } | |
| 619 | |
| 620 vap.va_mask = AT_SIZE; | |
| 621 if ((error = VOP_GETATTR(devvp, &vap, ATTR_COMM, cr)) != 0) { | |
| 622 cmn_err(CE_NOTE, "Cannot get attributes of the CD-ROM driver"); | |
| 623 goto cleanup; | |
| 624 } | |
| 625 | |
| 626 /* | |
| 627 * Make sure we have a nonzero size partition. | |
| 628 * The current version of the SD driver will *not* fail the open | |
| 629 * of such a partition so we have to check for it here. | |
| 630 */ | |
| 631 if (vap.va_size == 0) { | |
| 632 error = ENXIO; | |
| 633 goto cleanup; | |
| 634 } | |
| 635 | |
| 636 /* | |
| 637 * Init a new hsfs structure. | |
| 638 */ | |
| 639 fsp = kmem_zalloc(sizeof (*fsp), KM_SLEEP); | |
|
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640 svp = kmem_zalloc(sizeof (*svp), KM_SLEEP); |
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641 jvp = kmem_zalloc(sizeof (*jvp), KM_SLEEP); |
| 0 | 642 |
| 643 /* hardwire perms, uid, gid */ | |
| 644 fsp->hsfs_vol.vol_uid = hsfs_default_uid; | |
| 645 fsp->hsfs_vol.vol_gid = hsfs_default_gid; | |
| 646 fsp->hsfs_vol.vol_prot = hsfs_default_mode; | |
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647 svp->vol_uid = hsfs_default_uid; |
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648 svp->vol_gid = hsfs_default_gid; |
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649 svp->vol_prot = hsfs_default_mode; |
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650 jvp->vol_uid = hsfs_default_uid; |
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651 jvp->vol_gid = hsfs_default_gid; |
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652 jvp->vol_prot = hsfs_default_mode; |
| 0 | 653 |
| 654 /* | |
| 655 * Look for a Standard File Structure Volume Descriptor, | |
| 656 * of which there must be at least one. | |
| 657 * If found, check for volume size consistency. | |
|
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658 * |
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659 * If svp->lbn_size is != 0, we did find a ISO-9660:1999 SVD |
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|
660 * If jvp->lbn_size is != 0, we did find a Joliet SVD. |
| 0 | 661 */ |
|
2900
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
662 fsp->hsfs_namemax = ISO_FILE_NAMELEN; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
663 fsp->hsfs_namelen = ISO_FILE_NAMELEN; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
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1488
diff
changeset
|
664 error = hs_findisovol(fsp, devvp, &fsp->hsfs_vol, svp, jvp); |
|
1025
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
665 if (error == EINVAL) /* no iso 9660 - try high sierra ... */ |
|
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
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parents:
494
diff
changeset
|
666 error = hs_findhsvol(fsp, devvp, &fsp->hsfs_vol); |
| 0 | 667 |
| 668 if (error) | |
| 669 goto cleanup; | |
| 670 | |
|
2900
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
671 DTRACE_PROBE4(findvol, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
672 struct hsfs *, fsp, |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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changeset
|
673 struct hs_volume *, &fsp->hsfs_vol, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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changeset
|
674 struct hs_volume *, svp, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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changeset
|
675 struct hs_volume *, jvp); |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
676 |
| 0 | 677 /* |
| 678 * Generate a file system ID from the CD-ROM, | |
| 679 * and check it for uniqueness. | |
| 680 * | |
| 681 * What we are aiming for is some chance of integrity | |
| 682 * across disk change. That is, if a client has an fhandle, | |
| 683 * it will be valid as long as the same disk is mounted. | |
| 684 */ | |
| 685 fsid = compute_cdrom_id(fsp, devvp); | |
| 686 | |
| 687 mutex_enter(&hs_mounttab_lock); | |
| 688 | |
| 689 if (fsid == 0 || fsid == -1) { | |
| 690 uniqtime(&tv); | |
| 691 fsid = tv.tv_sec; | |
| 692 } else /* make sure that the fsid is unique */ | |
| 693 for (tsp = hs_mounttab; tsp != NULL; tsp = tsp->hsfs_next) { | |
| 694 if (fsid == tsp->hsfs_vfs->vfs_fsid.val[0]) { | |
| 695 uniqtime(&tv); | |
| 696 fsid = tv.tv_sec; | |
| 697 break; | |
| 698 } | |
| 699 } | |
| 700 | |
| 701 fsp->hsfs_next = hs_mounttab; | |
| 702 hs_mounttab = fsp; | |
| 703 | |
| 704 fsp->hsfs_devvp = devvp; | |
| 705 fsp->hsfs_vfs = vfsp; | |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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|
706 fsp->hsfs_fsmnt = kmem_alloc(pathbufsz, KM_SLEEP); |
|
8188e64c9073
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|
707 (void) strlcpy(fsp->hsfs_fsmnt, path, pathbufsz); |
| 0 | 708 |
| 709 mutex_init(&fsp->hsfs_free_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 710 rw_init(&fsp->hsfs_hash_lock, NULL, RW_DEFAULT, NULL); | |
| 711 | |
| 712 vfsp->vfs_data = (caddr_t)fsp; | |
| 713 vfsp->vfs_dev = dev; | |
| 714 vfsp->vfs_fstype = hsfsfstype; | |
| 715 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; /* %% */ | |
| 716 vfsp->vfs_fsid.val[0] = fsid; | |
| 717 vfsp->vfs_fsid.val[1] = hsfsfstype; | |
| 718 | |
|
2900
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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|
719 if (!hs_getrootvp(vfsp, fsp, pathbufsz)) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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changeset
|
720 DTRACE_PROBE1(rootvp__failed, struct hsfs *, fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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|
721 error = EINVAL; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
722 goto cleanup; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
723 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
724 DTRACE_PROBE1(rootvp, struct hsfs *, fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
725 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
726 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
727 * Attempt to discover a RR extension. |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
728 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
729 if (use_rrip) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
730 hp = VTOH(fsp->hsfs_rootvp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
731 hs_check_root_dirent(fsp->hsfs_rootvp, &(hp->hs_dirent)); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
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diff
changeset
|
732 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
733 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
734 has_rrip = IS_RRIP_IMPLEMENTED(fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
735 has_vers2 = (svp->lbn_size != 0); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
736 has_joliet = (jvp->lbn_size != 0); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
737 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
738 DTRACE_PROBE4(voltype__suggested, struct hsfs *, fsp, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
739 int, use_rrip, int, use_vers2, int, use_joliet); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
740 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
741 DTRACE_PROBE4(voltype__actual, struct hsfs *, fsp, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
742 int, has_rrip, int, has_vers2, int, has_joliet); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
743 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
744 DTRACE_PROBE4(findvol, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
745 struct hsfs *, fsp, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
746 struct hs_volume *, &fsp->hsfs_vol, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
747 struct hs_volume *, svp, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
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diff
changeset
|
748 struct hs_volume *, jvp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
749 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
750 force_rrip_off = !use_rrip || |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
751 (vfs_optionisset(vfsp, HOPT_JOLIET, NULL) && has_joliet) || |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
752 (vfs_optionisset(vfsp, HOPT_VERS2, NULL) && has_vers2); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
753 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
754 force_vers2_off = !use_vers2 || |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
755 (vfs_optionisset(vfsp, HOPT_JOLIET, NULL) && has_joliet); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
756 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
757 force_joliet_off = !use_joliet; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
758 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
759 DTRACE_PROBE4(voltype__force_off, struct hsfs *, fsp, |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
760 int, force_rrip_off, int, force_vers2_off, int, force_joliet_off); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
761 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
762 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
763 * At the moment, we have references of all three possible |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
764 * extensions (RR, ISO9660:1999/v2 and Joliet) if present. |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
765 * |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
766 * The "active" volume descriptor is RRIP (or ISO9660:1988). |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
767 * We now switch to the user-requested one. |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
768 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
769 redo_rootvp = 0; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
770 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
771 if (force_rrip_off || !has_rrip) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
772 if (has_vers2 && !force_vers2_off) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
773 VN_RELE(fsp->hsfs_rootvp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
774 bcopy(svp, &fsp->hsfs_vol, sizeof (struct hs_volume)); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
775 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO_V2; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
776 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
777 redo_rootvp = 1; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
778 has_joliet = 0; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
779 } else if (has_joliet && !force_joliet_off) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
780 VN_RELE(fsp->hsfs_rootvp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
781 bcopy(jvp, &fsp->hsfs_vol, sizeof (struct hs_volume)); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
782 fsp->hsfs_vol_type = HS_VOL_TYPE_JOLIET; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
783 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
784 redo_rootvp = 1; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
785 has_vers2 = 0; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
786 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
787 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
788 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
789 if (redo_rootvp) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
790 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
791 * Make sure not to use Rock Ridge. |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
792 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
793 UNSET_IMPL_BIT(fsp, RRIP_BIT); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
794 UNSET_SUSP_BIT(fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
795 has_rrip = 0; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
796 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
797 if (!hs_getrootvp(vfsp, fsp, pathbufsz)) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
798 DTRACE_PROBE1(rootvp__failed, struct hsfs *, fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
799 error = EINVAL; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
800 goto cleanup; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
801 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
802 DTRACE_PROBE1(rootvp, struct hsfs *, fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
803 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
804 if (IS_RRIP_IMPLEMENTED(fsp)) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
805 has_vers2 = 0; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
806 has_joliet = 0; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
807 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
808 if (force_vers2_off) |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
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diff
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|
809 has_vers2 = 0; |
|
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810 if (force_joliet_off) |
|
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811 has_joliet = 0; |
|
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812 DTRACE_PROBE4(voltype__taken, struct hsfs *, fsp, |
|
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813 int, has_rrip, int, has_vers2, int, has_joliet); |
|
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|
814 |
|
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|
815 /* |
|
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|
816 * mark root node as VROOT |
|
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|
817 */ |
|
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|
818 fsp->hsfs_rootvp->v_flag |= VROOT; |
|
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819 |
|
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820 /* Here we take care of some special case stuff for mountroot */ |
|
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|
821 if (isroot) { |
|
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822 fsp->hsfs_rootvp->v_rdev = devvp->v_rdev; |
|
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823 rootvp = fsp->hsfs_rootvp; |
|
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|
824 } |
|
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|
825 |
|
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|
826 if (IS_RRIP_IMPLEMENTED(fsp)) { |
|
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|
827 /* |
|
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828 * if RRIP, don't copy NOMAPLCASE or NOTRAILDOT to hsfs_flags |
|
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|
829 */ |
|
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830 mount_flags &= ~(HSFSMNT_NOMAPLCASE | HSFSMNT_NOTRAILDOT); |
|
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|
831 |
|
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|
832 fsp->hsfs_namemax = RRIP_FILE_NAMELEN; |
|
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833 fsp->hsfs_namelen = RRIP_FILE_NAMELEN; |
|
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834 |
|
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835 ASSERT(vfs_optionisset(vfsp, HOPT_RR, NULL)); |
|
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|
836 vfs_clearmntopt(vfsp, HOPT_VERS2); |
|
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|
837 vfs_clearmntopt(vfsp, HOPT_JOLIET); |
|
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|
838 |
|
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|
839 } else switch (fsp->hsfs_vol_type) { |
|
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|
840 |
|
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|
841 case HS_VOL_TYPE_HS: |
|
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|
842 case HS_VOL_TYPE_ISO: |
|
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|
843 default: |
|
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|
844 /* |
|
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|
845 * if iso v1, don't allow trailing spaces in iso file names |
|
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|
846 */ |
|
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|
847 mount_flags |= HSFSMNT_NOTRAILSPACE; |
|
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|
848 fsp->hsfs_namemax = ISO_NAMELEN_V2_MAX; |
|
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|
849 fsp->hsfs_namelen = ISO_FILE_NAMELEN; |
|
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|
850 vfs_clearmntopt(vfsp, HOPT_RR); |
|
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|
851 vfs_clearmntopt(vfsp, HOPT_VERS2); |
|
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|
852 vfs_clearmntopt(vfsp, HOPT_JOLIET); |
|
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|
853 break; |
|
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changeset
|
854 |
|
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|
855 case HS_VOL_TYPE_ISO_V2: |
|
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|
856 /* |
|
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|
857 * if iso v2, don't copy NOTRAILDOT to hsfs_flags |
|
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|
858 */ |
|
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|
859 mount_flags &= ~HSFSMNT_NOTRAILDOT; |
|
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|
860 mount_flags |= HSFSMNT_NOMAPLCASE | HSFSMNT_NOVERSION; |
|
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|
861 fsp->hsfs_namemax = ISO_NAMELEN_V2_MAX; |
|
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|
862 fsp->hsfs_namelen = ISO_NAMELEN_V2; |
|
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|
863 vfs_setmntopt(vfsp, HOPT_VERS2, NULL, 0); |
|
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|
864 vfs_clearmntopt(vfsp, HOPT_RR); |
|
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|
865 vfs_clearmntopt(vfsp, HOPT_JOLIET); |
|
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diff
changeset
|
866 break; |
|
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1488
diff
changeset
|
867 |
|
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changeset
|
868 case HS_VOL_TYPE_JOLIET: |
|
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diff
changeset
|
869 /* |
|
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1488
diff
changeset
|
870 * if Joliet, don't copy NOMAPLCASE or NOTRAILDOT to hsfs_flags |
|
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|
871 */ |
|
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changeset
|
872 mount_flags &= ~(HSFSMNT_NOMAPLCASE | HSFSMNT_NOTRAILDOT); |
|
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changeset
|
873 mount_flags |= HSFSMNT_NOMAPLCASE; |
|
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changeset
|
874 if (mount_flags & HSFSMNT_JOLIETLONG) |
|
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changeset
|
875 fsp->hsfs_namemax = JOLIET_NAMELEN_MAX*3; /* UTF-8 */ |
|
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diff
changeset
|
876 else |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
877 fsp->hsfs_namemax = MAXNAMELEN-1; |
|
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diff
changeset
|
878 fsp->hsfs_namelen = JOLIET_NAMELEN*2; |
|
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changeset
|
879 vfs_setmntopt(vfsp, HOPT_JOLIET, NULL, 0); |
|
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diff
changeset
|
880 vfs_clearmntopt(vfsp, HOPT_RR); |
|
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parents:
1488
diff
changeset
|
881 vfs_clearmntopt(vfsp, HOPT_VERS2); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
882 break; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
883 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
884 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
885 fsp->hsfs_flags = mount_flags; |
|
8188e64c9073
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parents:
1488
diff
changeset
|
886 |
|
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parents:
1488
diff
changeset
|
887 DTRACE_PROBE1(mount__done, struct hsfs *, fsp); |
|
8188e64c9073
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frankho
parents:
1488
diff
changeset
|
888 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
889 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
890 * set the magic word |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
891 */ |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
892 fsp->hsfs_magic = HSFS_MAGIC; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
893 mutex_exit(&hs_mounttab_lock); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
894 |
|
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1488
diff
changeset
|
895 return (0); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
896 |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
897 cleanup: |
|
8188e64c9073
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frankho
parents:
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diff
changeset
|
898 (void) VOP_CLOSE(devvp, FREAD, 1, (offset_t)0, cr); |
|
8188e64c9073
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diff
changeset
|
899 VN_RELE(devvp); |
|
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diff
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|
900 if (fsp) |
|
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parents:
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diff
changeset
|
901 kmem_free(fsp, sizeof (*fsp)); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
902 if (svp) |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
903 kmem_free(svp, sizeof (*svp)); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
904 if (jvp) |
|
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diff
changeset
|
905 kmem_free(jvp, sizeof (*jvp)); |
|
8188e64c9073
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frankho
parents:
1488
diff
changeset
|
906 return (error); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
907 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
908 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
909 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
910 * Get the rootvp associated with fsp->hsfs_vol |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
911 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
912 static int |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
913 hs_getrootvp( |
|
8188e64c9073
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frankho
parents:
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diff
changeset
|
914 struct vfs *vfsp, |
|
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diff
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|
915 struct hsfs *fsp, |
|
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|
916 size_t pathsize) |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
917 { |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
918 struct hsnode *hp; |
|
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parents:
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diff
changeset
|
919 |
|
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diff
changeset
|
920 ASSERT(pathsize == strlen(fsp->hsfs_fsmnt) + 1); |
|
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|
921 |
| 0 | 922 /* |
| 923 * If the root directory does not appear to be | |
| 924 * valid, use what it points to as "." instead. | |
| 925 * Some Defense Mapping Agency disks are non-conformant | |
| 926 * in this way. | |
| 927 */ | |
| 928 if (!hsfs_valid_dir(&fsp->hsfs_vol.root_dir)) { | |
| 929 hs_log_bogus_disk_warning(fsp, HSFS_ERR_BAD_ROOT_DIR, 0); | |
| 930 if (hs_remakenode(fsp->hsfs_vol.root_dir.ext_lbn, | |
| 931 (uint_t)0, vfsp, &fsp->hsfs_rootvp)) { | |
|
1025
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
frankho
parents:
494
diff
changeset
|
932 hs_mounttab = hs_mounttab->hsfs_next; |
|
1aef26bcfa0e
6300064 hsfs_spec.h has developed a southern drawl.
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parents:
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|
933 mutex_destroy(&fsp->hsfs_free_lock); |
|
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934 rw_destroy(&fsp->hsfs_hash_lock); |
|
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935 kmem_free(fsp->hsfs_fsmnt, pathsize); |
|
494
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|
936 mutex_exit(&hs_mounttab_lock); |
|
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|
937 return (0); |
| 0 | 938 } |
| 939 } else { | |
| 940 fsp->hsfs_rootvp = hs_makenode(&fsp->hsfs_vol.root_dir, | |
| 941 fsp->hsfs_vol.root_dir.ext_lbn, 0, vfsp); | |
| 942 } | |
| 943 | |
| 944 /* XXX - ignore the path table for now */ | |
| 945 fsp->hsfs_ptbl = NULL; | |
| 946 hp = VTOH(fsp->hsfs_rootvp); | |
| 947 hp->hs_ptbl_idx = NULL; | |
| 948 | |
|
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|
949 return (1); |
| 0 | 950 } |
| 951 | |
| 952 /* | |
| 953 * hs_findhsvol() | |
| 954 * | |
| 955 * Locate the Standard File Structure Volume Descriptor and | |
| 956 * parse it into an hs_volume structure. | |
| 957 * | |
| 958 * XXX - May someday want to look for Coded Character Set FSVD, too. | |
| 959 */ | |
| 960 static int | |
| 961 hs_findhsvol(struct hsfs *fsp, struct vnode *vp, struct hs_volume *hvp) | |
| 962 { | |
| 963 struct buf *secbp; | |
| 964 int i; | |
| 965 uchar_t *volp; | |
| 966 int error; | |
| 967 uint_t secno; | |
| 968 | |
| 969 secno = hs_findvoldesc(vp->v_rdev, HS_VOLDESC_SEC); | |
| 970 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
| 971 error = geterror(secbp); | |
| 972 | |
| 973 if (error != 0) { | |
| 974 cmn_err(CE_NOTE, "hs_findhsvol: bread: error=(%d)", error); | |
| 975 brelse(secbp); | |
| 976 return (error); | |
| 977 } | |
| 978 | |
| 979 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 980 | |
| 981 while (HSV_DESC_TYPE(volp) != VD_EOV) { | |
| 982 for (i = 0; i < HSV_ID_STRLEN; i++) | |
| 983 if (HSV_STD_ID(volp)[i] != HSV_ID_STRING[i]) | |
| 984 goto cantfind; | |
| 985 if (HSV_STD_VER(volp) != HSV_ID_VER) | |
| 986 goto cantfind; | |
| 987 switch (HSV_DESC_TYPE(volp)) { | |
| 988 case VD_SFS: | |
| 989 /* Standard File Structure */ | |
| 990 fsp->hsfs_vol_type = HS_VOL_TYPE_HS; | |
| 991 error = hs_parsehsvol(fsp, volp, hvp); | |
| 992 brelse(secbp); | |
| 993 return (error); | |
| 994 | |
| 995 case VD_CCFS: | |
| 996 /* Coded Character File Structure */ | |
| 997 case VD_BOOT: | |
| 998 case VD_UNSPEC: | |
| 999 case VD_EOV: | |
| 1000 break; | |
| 1001 } | |
| 1002 brelse(secbp); | |
| 1003 ++secno; | |
| 1004 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
| 1005 | |
| 1006 error = geterror(secbp); | |
| 1007 | |
| 1008 if (error != 0) { | |
| 1009 cmn_err(CE_NOTE, "hs_findhsvol: bread: error=(%d)", | |
| 1010 error); | |
| 1011 brelse(secbp); | |
| 1012 return (error); | |
| 1013 } | |
| 1014 | |
| 1015 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1016 } | |
| 1017 cantfind: | |
| 1018 brelse(secbp); | |
| 1019 return (EINVAL); | |
| 1020 } | |
| 1021 | |
| 1022 /* | |
| 1023 * hs_parsehsvol | |
| 1024 * | |
| 1025 * Parse the Standard File Structure Volume Descriptor into | |
| 1026 * an hs_volume structure. We can't just bcopy it into the | |
| 1027 * structure because of byte-ordering problems. | |
| 1028 * | |
| 1029 */ | |
| 1030 static int | |
| 1031 hs_parsehsvol(struct hsfs *fsp, uchar_t *volp, struct hs_volume *hvp) | |
| 1032 { | |
| 1033 hvp->vol_size = HSV_VOL_SIZE(volp); | |
| 1034 hvp->lbn_size = HSV_BLK_SIZE(volp); | |
| 1035 if (hvp->lbn_size == 0) { | |
| 1036 cmn_err(CE_NOTE, "hs_parsehsvol: logical block size in the " | |
| 1037 "SFSVD is zero"); | |
| 1038 return (EINVAL); | |
| 1039 } | |
| 1040 hvp->lbn_shift = ffs((long)hvp->lbn_size) - 1; | |
| 1041 hvp->lbn_secshift = ffs((long)howmany(HS_SECTOR_SIZE, | |
| 1042 (int)hvp->lbn_size)) - 1; | |
| 1043 hvp->lbn_maxoffset = hvp->lbn_size - 1; | |
| 1044 hs_parse_longdate(HSV_cre_date(volp), &hvp->cre_date); | |
| 1045 hs_parse_longdate(HSV_mod_date(volp), &hvp->mod_date); | |
| 1046 hvp->file_struct_ver = HSV_FILE_STRUCT_VER(volp); | |
| 1047 hvp->ptbl_len = HSV_PTBL_SIZE(volp); | |
| 1048 hvp->vol_set_size = (ushort_t)HSV_SET_SIZE(volp); | |
| 1049 hvp->vol_set_seq = (ushort_t)HSV_SET_SEQ(volp); | |
| 1050 #if defined(_LITTLE_ENDIAN) | |
| 1051 hvp->ptbl_lbn = HSV_PTBL_MAN_LS(volp); | |
| 1052 #else | |
| 1053 hvp->ptbl_lbn = HSV_PTBL_MAN_MS(volp); | |
| 1054 #endif | |
|
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|
1055 hs_copylabel(hvp, HSV_VOL_ID(volp), 0); |
| 0 | 1056 |
| 1057 /* | |
| 1058 * Make sure that lbn_size is a power of two and otherwise valid. | |
| 1059 */ | |
| 1060 if (hvp->lbn_size & ~(1 << hvp->lbn_shift)) { | |
| 1061 cmn_err(CE_NOTE, | |
| 1062 "hsfs: %d-byte logical block size not supported", | |
| 1063 hvp->lbn_size); | |
| 1064 return (EINVAL); | |
| 1065 } | |
| 1066 return (hs_parsedir(fsp, HSV_ROOT_DIR(volp), &hvp->root_dir, | |
|
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|
1067 (char *)NULL, (int *)NULL, HDE_ROOT_DIR_REC_SIZE)); |
| 0 | 1068 } |
| 1069 | |
| 1070 /* | |
| 1071 * hs_findisovol() | |
| 1072 * | |
| 1073 * Locate the Primary Volume Descriptor | |
| 1074 * parse it into an hs_volume structure. | |
| 1075 * | |
|
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|
1076 * XXX - Partition not yet done |
|
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|
1077 * |
|
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|
1078 * Except for fsp->hsfs_vol_type, no fsp member may be modified. |
|
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|
1079 * fsp->hsfs_vol is modified indirectly via the *hvp argument. |
| 0 | 1080 */ |
| 1081 static int | |
| 1082 hs_findisovol(struct hsfs *fsp, struct vnode *vp, | |
|
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|
1083 struct hs_volume *hvp, |
|
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|
1084 struct hs_volume *svp, |
|
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|
1085 struct hs_volume *jvp) |
| 0 | 1086 { |
| 1087 struct buf *secbp; | |
| 1088 int i; | |
| 1089 uchar_t *volp; | |
| 1090 int error; | |
| 1091 uint_t secno; | |
| 1092 int foundpvd = 0; | |
|
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|
1093 int foundsvd = 0; |
|
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|
1094 int foundjvd = 0; |
| 0 | 1095 |
| 1096 secno = hs_findvoldesc(vp->v_rdev, ISO_VOLDESC_SEC); | |
| 1097 secbp = bread(vp->v_rdev, secno * 4, ISO_SECTOR_SIZE); | |
| 1098 error = geterror(secbp); | |
| 1099 | |
| 1100 if (error != 0) { | |
| 1101 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", error); | |
| 1102 brelse(secbp); | |
| 1103 return (error); | |
| 1104 } | |
| 1105 | |
| 1106 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1107 | |
| 1108 while ((enum iso_voldesc_type) ISO_DESC_TYPE(volp) != ISO_VD_EOV) { | |
| 1109 for (i = 0; i < ISO_ID_STRLEN; i++) | |
| 1110 if (ISO_STD_ID(volp)[i] != ISO_ID_STRING[i]) | |
| 1111 goto cantfind; | |
| 1112 switch (ISO_DESC_TYPE(volp)) { | |
| 1113 case ISO_VD_PVD: | |
| 1114 /* Standard File Structure */ | |
|
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|
1115 if (ISO_STD_VER(volp) != ISO_ID_VER) |
|
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frankho
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diff
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|
1116 goto cantfind; |
| 0 | 1117 if (foundpvd != 1) { |
| 1118 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; | |
| 1119 if (error = hs_parseisovol(fsp, volp, hvp)) { | |
| 1120 brelse(secbp); | |
| 1121 return (error); | |
| 1122 } | |
| 1123 foundpvd = 1; | |
| 1124 } | |
| 1125 break; | |
| 1126 case ISO_VD_SVD: | |
| 1127 /* Supplementary Volume Descriptor */ | |
|
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|
1128 if (ISO_STD_VER(volp) == ISO_ID_VER2 && |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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|
1129 foundsvd != 1) { |
|
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|
1130 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; |
|
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|
1131 if (error = hs_parseisovol(fsp, volp, svp)) { |
|
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|
1132 brelse(secbp); |
|
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diff
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|
1133 return (error); |
|
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diff
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|
1134 } |
|
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|
1135 foundsvd = 1; |
|
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diff
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|
1136 } |
|
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|
1137 if (hs_joliet_level(volp) >= 1 && foundjvd != 1) { |
|
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diff
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|
1138 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; |
|
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|
1139 if (error = hs_parseisovol(fsp, volp, jvp)) { |
|
8188e64c9073
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|
1140 brelse(secbp); |
|
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|
1141 return (error); |
|
8188e64c9073
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|
1142 } |
|
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|
1143 foundjvd = 1; |
|
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|
1144 } |
| 0 | 1145 break; |
| 1146 case ISO_VD_BOOT: | |
| 1147 break; | |
| 1148 case ISO_VD_VPD: | |
| 1149 /* currently cannot handle partition */ | |
| 1150 break; | |
| 1151 case VD_EOV: | |
| 1152 break; | |
| 1153 } | |
| 1154 brelse(secbp); | |
| 1155 ++secno; | |
| 1156 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
| 1157 error = geterror(secbp); | |
| 1158 | |
| 1159 if (error != 0) { | |
| 1160 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", | |
| 1161 error); | |
| 1162 brelse(secbp); | |
| 1163 return (error); | |
| 1164 } | |
| 1165 | |
| 1166 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1167 } | |
| 1168 if (foundpvd) { | |
| 1169 brelse(secbp); | |
| 1170 return (0); | |
| 1171 } | |
| 1172 cantfind: | |
| 1173 brelse(secbp); | |
| 1174 return (EINVAL); | |
| 1175 } | |
|
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|
1176 |
|
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|
1177 /* |
|
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|
1178 * Return 0 if no Joliet is found |
|
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|
1179 * else return Joliet Level 1..3 |
|
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|
1180 */ |
|
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|
1181 static int |
|
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|
1182 hs_joliet_level(uchar_t *volp) |
|
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|
1183 { |
|
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|
1184 if (ISO_std_ver(volp)[0] == ISO_ID_VER && |
|
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|
1185 ISO_svd_esc(volp)[0] == '%' && |
|
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|
1186 ISO_svd_esc(volp)[1] == '/') { |
|
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diff
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|
1187 |
|
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changeset
|
1188 switch (ISO_svd_esc(volp)[2]) { |
|
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|
1189 |
|
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|
1190 case '@': |
|
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|
1191 return (1); |
|
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|
1192 case 'C': |
|
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|
1193 return (2); |
|
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|
1194 case 'E': |
|
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|
1195 return (3); |
|
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|
1196 } |
|
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|
1197 } |
|
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|
1198 return (0); |
|
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diff
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|
1199 } |
|
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|
1200 |
| 0 | 1201 /* |
| 1202 * hs_parseisovol | |
| 1203 * | |
| 1204 * Parse the Primary Volume Descriptor into an hs_volume structure. | |
| 1205 * | |
| 1206 */ | |
| 1207 static int | |
| 1208 hs_parseisovol(struct hsfs *fsp, uchar_t *volp, struct hs_volume *hvp) | |
| 1209 { | |
| 1210 hvp->vol_size = ISO_VOL_SIZE(volp); | |
| 1211 hvp->lbn_size = ISO_BLK_SIZE(volp); | |
| 1212 if (hvp->lbn_size == 0) { | |
| 1213 cmn_err(CE_NOTE, "hs_parseisovol: logical block size in the " | |
| 1214 "PVD is zero"); | |
| 1215 return (EINVAL); | |
| 1216 } | |
| 1217 hvp->lbn_shift = ffs((long)hvp->lbn_size) - 1; | |
| 1218 hvp->lbn_secshift = ffs((long)howmany(ISO_SECTOR_SIZE, | |
| 1219 (int)hvp->lbn_size)) - 1; | |
| 1220 hvp->lbn_maxoffset = hvp->lbn_size - 1; | |
| 1221 hs_parse_longdate(ISO_cre_date(volp), &hvp->cre_date); | |
| 1222 hs_parse_longdate(ISO_mod_date(volp), &hvp->mod_date); | |
| 1223 hvp->file_struct_ver = ISO_FILE_STRUCT_VER(volp); | |
| 1224 hvp->ptbl_len = ISO_PTBL_SIZE(volp); | |
| 1225 hvp->vol_set_size = (ushort_t)ISO_SET_SIZE(volp); | |
| 1226 hvp->vol_set_seq = (ushort_t)ISO_SET_SEQ(volp); | |
| 1227 #if defined(_LITTLE_ENDIAN) | |
| 1228 hvp->ptbl_lbn = ISO_PTBL_MAN_LS(volp); | |
| 1229 #else | |
| 1230 hvp->ptbl_lbn = ISO_PTBL_MAN_MS(volp); | |
| 1231 #endif | |
|
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|
1232 hs_copylabel(hvp, ISO_VOL_ID(volp), hs_joliet_level(volp) >= 1); |
| 0 | 1233 |
| 1234 /* | |
| 1235 * Make sure that lbn_size is a power of two and otherwise valid. | |
| 1236 */ | |
| 1237 if (hvp->lbn_size & ~(1 << hvp->lbn_shift)) { | |
| 1238 cmn_err(CE_NOTE, | |
| 1239 "hsfs: %d-byte logical block size not supported", | |
| 1240 hvp->lbn_size); | |
| 1241 return (EINVAL); | |
| 1242 } | |
| 1243 return (hs_parsedir(fsp, ISO_ROOT_DIR(volp), &hvp->root_dir, | |
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1244 (char *)NULL, (int *)NULL, IDE_ROOT_DIR_REC_SIZE)); |
| 0 | 1245 } |
| 1246 | |
| 1247 /* | |
| 1248 * Common code for mount and umount. | |
| 1249 * Check that the user's argument is a reasonable | |
| 1250 * thing on which to mount, and return the device number if so. | |
| 1251 */ | |
| 1252 static int | |
| 1253 hs_getmdev(struct vfs *vfsp, char *fspec, int flags, dev_t *pdev, mode_t *mode, | |
| 1254 cred_t *cr) | |
| 1255 { | |
| 1256 int error; | |
| 1257 struct vnode *vp; | |
| 1258 struct vattr vap; | |
| 1259 dev_t dev; | |
| 1260 | |
| 1261 /* | |
| 1262 * Get the device to be mounted | |
| 1263 */ | |
| 1264 error = lookupname(fspec, (flags & MS_SYSSPACE) ? | |
| 1265 UIO_SYSSPACE : UIO_USERSPACE, FOLLOW, NULLVPP, &vp); | |
| 1266 if (error) { | |
| 1267 if (error == ENOENT) { | |
| 1268 return (ENODEV); /* needs translation */ | |
| 1269 } | |
| 1270 return (error); | |
| 1271 } | |
| 1272 if (vp->v_type != VBLK) { | |
| 1273 VN_RELE(vp); | |
| 1274 return (ENOTBLK); | |
| 1275 } | |
| 1276 /* | |
| 1277 * Can we read from the device? | |
| 1278 */ | |
| 1279 if ((error = VOP_ACCESS(vp, VREAD, 0, cr)) != 0 || | |
| 1280 (error = secpolicy_spec_open(cr, vp, FREAD)) != 0) { | |
| 1281 VN_RELE(vp); | |
| 1282 return (error); | |
| 1283 } | |
| 1284 | |
| 1285 vap.va_mask = AT_MODE; /* get protection mode */ | |
| 1286 (void) VOP_GETATTR(vp, &vap, 0, CRED()); | |
| 1287 *mode = vap.va_mode; | |
| 1288 | |
| 1289 dev = *pdev = vp->v_rdev; | |
| 1290 VN_RELE(vp); | |
| 1291 | |
| 1292 /* | |
| 1293 * Ensure that this device isn't already mounted, | |
| 1294 * unless this is a REMOUNT request or we are told to suppress | |
| 1295 * mount checks. | |
| 1296 */ | |
| 1297 if ((flags & MS_NOCHECK) == 0) { | |
| 1298 if (vfs_devmounting(dev, vfsp)) | |
| 1299 return (EBUSY); | |
| 1300 if (vfs_devismounted(dev) && !(flags & MS_REMOUNT)) | |
| 1301 return (EBUSY); | |
| 1302 } | |
| 1303 | |
| 1304 if (getmajor(*pdev) >= devcnt) | |
| 1305 return (ENXIO); | |
| 1306 return (0); | |
| 1307 } | |
| 1308 | |
| 1309 static void | |
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1310 hs_copylabel(struct hs_volume *hvp, unsigned char *label, int isjoliet) |
| 0 | 1311 { |
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1312 char lbuf[64]; /* hs_joliet_cp() creates 48 bytes at most */ |
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1313 |
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1314 if (isjoliet) { |
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1315 /* |
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1316 * hs_joliet_cp() will output 16..48 bytes. |
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1317 * We need to clear 'lbuf' to avoid junk chars past byte 15. |
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1318 */ |
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1319 bzero(lbuf, sizeof (lbuf)); |
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1320 (void)hs_joliet_cp((char *)label, lbuf, 32); |
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1321 label = (unsigned char *)lbuf; |
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1322 } |
| 0 | 1323 /* cdrom volid is at most 32 bytes */ |
| 1324 bcopy(label, hvp->vol_id, 32); | |
| 1325 hvp->vol_id[31] = NULL; | |
| 1326 } | |
| 1327 | |
| 1328 /* | |
| 1329 * Mount root file system. | |
| 1330 * "why" is ROOT_INIT on initial call, ROOT_REMOUNT if called to | |
| 1331 * remount the root file system, and ROOT_UNMOUNT if called to | |
| 1332 * unmount the root (e.g., as part of a system shutdown). | |
| 1333 * | |
| 1334 * XXX - this may be partially machine-dependent; it, along with the VFS_SWAPVP | |
| 1335 * operation, goes along with auto-configuration. A mechanism should be | |
| 1336 * provided by which machine-INdependent code in the kernel can say "get me the | |
| 1337 * right root file system" and "get me the right initial swap area", and have | |
| 1338 * that done in what may well be a machine-dependent fashion. | |
| 1339 * Unfortunately, it is also file-system-type dependent (NFS gets it via | |
| 1340 * bootparams calls, UFS gets it from various and sundry machine-dependent | |
| 1341 * mechanisms, as SPECFS does for swap). | |
| 1342 */ | |
| 1343 static int | |
| 1344 hsfs_mountroot(struct vfs *vfsp, enum whymountroot why) | |
| 1345 { | |
| 1346 int error; | |
| 1347 struct hsfs *fsp; | |
| 1348 struct hs_volume *fvolp; | |
| 1349 static int hsfsrootdone = 0; | |
| 1350 dev_t rootdev; | |
| 1351 mode_t mode = 0; | |
| 1352 | |
| 1353 if (why == ROOT_INIT) { | |
| 1354 if (hsfsrootdone++) | |
| 1355 return (EBUSY); | |
| 1356 rootdev = getrootdev(); | |
| 1357 if (rootdev == (dev_t)NODEV) | |
| 1358 return (ENODEV); | |
| 1359 vfsp->vfs_dev = rootdev; | |
| 1360 vfsp->vfs_flag |= VFS_RDONLY; | |
| 1361 } else if (why == ROOT_REMOUNT) { | |
| 1362 cmn_err(CE_NOTE, "hsfs_mountroot: ROOT_REMOUNT"); | |
| 1363 return (0); | |
| 1364 } else if (why == ROOT_UNMOUNT) { | |
| 1365 return (0); | |
| 1366 } | |
| 1367 error = vfs_lock(vfsp); | |
| 1368 if (error) { | |
| 1369 cmn_err(CE_NOTE, "hsfs_mountroot: couldn't get vfs_lock"); | |
| 1370 return (error); | |
| 1371 } | |
| 1372 | |
| 1373 error = hs_mountfs(vfsp, rootdev, "/", mode, 1, CRED(), 1); | |
| 1374 /* | |
| 1375 * XXX - assumes root device is not indirect, because we don't set | |
| 1376 * rootvp. Is rootvp used for anything? If so, make another arg | |
| 1377 * to mountfs. | |
| 1378 */ | |
| 1379 if (error) { | |
| 1380 vfs_unlock(vfsp); | |
| 1381 if (rootvp) { | |
| 1382 VN_RELE(rootvp); | |
| 1383 rootvp = (struct vnode *)0; | |
| 1384 } | |
| 1385 return (error); | |
| 1386 } | |
| 1387 if (why == ROOT_INIT) | |
| 1388 vfs_add((struct vnode *)0, vfsp, | |
| 1389 (vfsp->vfs_flag & VFS_RDONLY) ? MS_RDONLY : 0); | |
| 1390 vfs_unlock(vfsp); | |
| 1391 fsp = VFS_TO_HSFS(vfsp); | |
| 1392 fvolp = &fsp->hsfs_vol; | |
| 1393 #ifdef HSFS_CLKSET | |
| 1394 if (fvolp->cre_date.tv_sec == 0) { | |
| 1395 cmn_err(CE_NOTE, "hsfs_mountroot: cre_date.tv_sec == 0"); | |
| 1396 if (fvolp->mod_date.tv_sec == 0) { | |
| 1397 cmn_err(CE_NOTE, "hsfs_mountroot: mod_date.tv_sec == 0"); | |
| 1398 cmn_err(CE_NOTE, "hsfs_mountroot: clkset(-1L)"); | |
| 1399 clkset(-1L); | |
| 1400 } else | |
| 1401 clkset(fvolp->mod_date.tv_sec); | |
| 1402 } else | |
| 1403 clkset(fvolp->mod_date.tv_sec); | |
| 1404 #else /* HSFS_CLKSET */ | |
| 1405 clkset(-1L); | |
| 1406 #endif /* HSFS_CLKSET */ | |
| 1407 return (0); | |
| 1408 } | |
| 1409 | |
| 1410 /* | |
| 1411 * hs_findvoldesc() | |
| 1412 * | |
| 1413 * Return the sector where the volume descriptor lives. This is | |
| 1414 * a fixed value for "normal" cd-rom's, but can change for | |
| 1415 * multisession cd's. | |
| 1416 * | |
| 1417 * desc_sec is the same for high-sierra and iso 9660 formats, why | |
| 1418 * there are two differnt #defines used in the code for this is | |
| 1419 * beyond me. These are standards, cast in concrete, right? | |
| 1420 * To be general, however, this function supports passing in different | |
| 1421 * values. | |
| 1422 */ | |
| 1423 static int | |
| 1424 hs_findvoldesc(dev_t rdev, int desc_sec) | |
| 1425 { | |
| 1426 int secno; | |
| 1427 int error; | |
| 1428 int rval; /* ignored */ | |
| 1429 | |
| 1430 #ifdef CDROMREADOFFSET | |
| 1431 /* | |
| 1432 * Issue the Read Offset ioctl directly to the | |
| 1433 * device. Ignore any errors and set starting | |
| 1434 * secno to the default, otherwise add the | |
| 1435 * VOLDESC sector number to the offset. | |
| 1436 */ | |
| 1437 error = cdev_ioctl(rdev, CDROMREADOFFSET, (intptr_t)&secno, | |
| 1438 FNATIVE|FKIOCTL|FREAD, CRED(), &rval); | |
| 1439 if (error) { | |
| 1440 secno = desc_sec; | |
| 1441 } else { | |
| 1442 secno += desc_sec; | |
| 1443 } | |
| 1444 #else | |
| 1445 secno = desc_sec; | |
| 1446 #endif | |
| 1447 | |
| 1448 return (secno); | |
| 1449 } |