Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/hsfs/hsfs_vfsops.c @ 13750:6c5d0718e821
2974 hate having heap of hsfs headers
2977 ISO_DESC_TYPE should return iso_voldesc_type as everyone expects
Reviewed by: Joshua M. Clulow <josh@sysmgr.org>
Reviewed by: Milan Jurik <milan.jurik@xylab.cz>
Approved by: Eric Schrock <eric.schrock@delphix.com>
| author | Richard Lowe <richlowe@richlowe.net> |
|---|---|
| date | Thu, 28 Jun 2012 04:06:54 +0100 |
| parents | 6bec9720e054 |
| children |
| 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 /* | |
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22 * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved. |
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23 * Copyright (c) 2011 Bayard G. Bell. All rights reserved. |
| 0 | 24 */ |
| 25 | |
| 26 /* | |
| 27 * VFS operations for High Sierra filesystem | |
| 28 */ | |
| 29 | |
| 30 #include <sys/types.h> | |
| 31 #include <sys/isa_defs.h> | |
| 32 #include <sys/t_lock.h> | |
| 33 #include <sys/param.h> | |
| 34 #include <sys/systm.h> | |
| 35 #include <sys/sysmacros.h> | |
| 36 #include <sys/kmem.h> | |
| 37 #include <sys/signal.h> | |
| 38 #include <sys/user.h> | |
| 39 #include <sys/proc.h> | |
| 40 #include <sys/disp.h> | |
| 41 #include <sys/buf.h> | |
| 42 #include <sys/pathname.h> | |
| 43 #include <sys/vfs.h> | |
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44 #include <sys/vfs_opreg.h> |
| 0 | 45 #include <sys/vnode.h> |
| 46 #include <sys/file.h> | |
| 47 #include <sys/uio.h> | |
| 48 #include <sys/conf.h> | |
| 49 #include <sys/policy.h> | |
| 50 | |
| 51 #include <vm/page.h> | |
| 52 | |
| 53 #include <sys/fs/snode.h> | |
| 54 #include <sys/fs/hsfs_spec.h> | |
| 55 #include <sys/fs/hsfs_isospec.h> | |
| 56 #include <sys/fs/hsfs_node.h> | |
| 57 #include <sys/fs/hsfs_impl.h> | |
| 58 #include <sys/fs/hsfs_susp.h> | |
| 59 #include <sys/fs/hsfs_rrip.h> | |
| 60 | |
| 61 #include <sys/statvfs.h> | |
| 62 #include <sys/mount.h> | |
| 63 #include <sys/mntent.h> | |
| 64 #include <sys/swap.h> | |
| 65 #include <sys/errno.h> | |
| 66 #include <sys/debug.h> | |
| 67 #include "fs/fs_subr.h" | |
| 68 #include <sys/cmn_err.h> | |
| 69 #include <sys/bootconf.h> | |
| 70 | |
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71 #include <sys/sdt.h> |
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72 |
| 0 | 73 /* |
| 74 * These are needed for the CDROMREADOFFSET Code | |
| 75 */ | |
| 76 #include <sys/cdio.h> | |
| 77 #include <sys/sunddi.h> | |
| 78 | |
| 79 #define HSFS_CLKSET | |
| 80 | |
| 81 #include <sys/modctl.h> | |
| 82 | |
| 83 /* | |
| 84 * Options for mount. | |
| 85 */ | |
| 86 #define HOPT_GLOBAL MNTOPT_GLOBAL | |
| 87 #define HOPT_NOGLOBAL MNTOPT_NOGLOBAL | |
| 88 #define HOPT_MAPLCASE "maplcase" | |
| 89 #define HOPT_NOMAPLCASE "nomaplcase" | |
| 90 #define HOPT_NOTRAILDOT "notraildot" | |
| 91 #define HOPT_TRAILDOT "traildot" | |
| 92 #define HOPT_NRR "nrr" | |
| 93 #define HOPT_RR "rr" | |
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94 #define HOPT_JOLIET "joliet" |
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95 #define HOPT_NOJOLIET "nojoliet" |
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96 #define HOPT_JOLIETLONG "jolietlong" |
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97 #define HOPT_VERS2 "vers2" |
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98 #define HOPT_NOVERS2 "novers2" |
| 0 | 99 #define HOPT_RO MNTOPT_RO |
| 100 | |
| 101 static char *global_cancel[] = { HOPT_NOGLOBAL, NULL }; | |
| 102 static char *noglobal_cancel[] = { HOPT_GLOBAL, NULL }; | |
| 103 static char *mapl_cancel[] = { HOPT_NOMAPLCASE, NULL }; | |
| 104 static char *nomapl_cancel[] = { HOPT_MAPLCASE, NULL }; | |
| 105 static char *ro_cancel[] = { MNTOPT_RW, NULL }; | |
| 106 static char *rr_cancel[] = { HOPT_NRR, NULL }; | |
| 107 static char *nrr_cancel[] = { HOPT_RR, NULL }; | |
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108 static char *joliet_cancel[] = { HOPT_NOJOLIET, NULL }; |
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109 static char *nojoliet_cancel[] = { HOPT_JOLIET, NULL }; |
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110 static char *vers2_cancel[] = { HOPT_NOVERS2, NULL }; |
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111 static char *novers2_cancel[] = { HOPT_VERS2, NULL }; |
| 0 | 112 static char *trail_cancel[] = { HOPT_NOTRAILDOT, NULL }; |
| 113 static char *notrail_cancel[] = { HOPT_TRAILDOT, NULL }; | |
| 114 | |
| 115 static mntopt_t hsfs_options[] = { | |
| 116 { HOPT_GLOBAL, global_cancel, NULL, 0, NULL }, | |
| 117 { HOPT_NOGLOBAL, noglobal_cancel, NULL, MO_DEFAULT, NULL }, | |
| 118 { HOPT_MAPLCASE, mapl_cancel, NULL, MO_DEFAULT, NULL }, | |
| 119 { HOPT_NOMAPLCASE, nomapl_cancel, NULL, 0, NULL }, | |
| 120 { HOPT_RO, ro_cancel, NULL, MO_DEFAULT, NULL }, | |
| 121 { HOPT_RR, rr_cancel, NULL, MO_DEFAULT, NULL }, | |
| 122 { HOPT_NRR, nrr_cancel, NULL, 0, NULL }, | |
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123 { HOPT_JOLIET, joliet_cancel, NULL, 0, NULL }, |
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124 { HOPT_NOJOLIET, nojoliet_cancel, NULL, 0, NULL }, |
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125 { HOPT_JOLIETLONG, NULL, NULL, 0, NULL }, |
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126 { HOPT_VERS2, vers2_cancel, NULL, 0, NULL }, |
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127 { HOPT_NOVERS2, novers2_cancel, NULL, 0, NULL }, |
| 0 | 128 { HOPT_TRAILDOT, trail_cancel, NULL, MO_DEFAULT, NULL }, |
| 129 { HOPT_NOTRAILDOT, notrail_cancel, NULL, 0, NULL }, | |
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130 { "sector", NULL, "0", MO_HASVALUE, NULL}, |
| 0 | 131 }; |
| 132 | |
| 133 static mntopts_t hsfs_proto_opttbl = { | |
| 134 sizeof (hsfs_options) / sizeof (mntopt_t), | |
| 135 hsfs_options | |
| 136 }; | |
| 137 | |
| 5312 | 138 /* |
| 139 * Indicates whether to enable the I/O scheduling and readahead logic | |
| 140 * 1 - Enable, 0 - Do not Enable. | |
| 141 * Debugging purposes. | |
| 142 */ | |
| 143 int do_schedio = 1; | |
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144 static int hsfsfstype; |
| 0 | 145 static int hsfsinit(int, char *); |
| 146 | |
| 147 static vfsdef_t vfw = { | |
| 148 VFSDEF_VERSION, | |
| 149 "hsfs", | |
| 150 hsfsinit, | |
| 6855 | 151 /* We don't suppport remounting */ |
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152 VSW_HASPROTO|VSW_STATS|VSW_CANLOFI|VSW_ZMOUNT, |
| 0 | 153 &hsfs_proto_opttbl |
| 154 }; | |
| 155 | |
| 156 static struct modlfs modlfs = { | |
| 157 &mod_fsops, "filesystem for HSFS", &vfw | |
| 158 }; | |
| 159 | |
| 160 static struct modlinkage modlinkage = { | |
| 161 MODREV_1, (void *)&modlfs, NULL | |
| 162 }; | |
| 163 | |
| 5312 | 164 extern void hsched_init_caches(void); |
| 165 extern void hsched_fini_caches(void); | |
| 166 | |
| 167 | |
| 0 | 168 int |
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169 _init(void) |
| 0 | 170 { |
| 171 return (mod_install(&modlinkage)); | |
| 172 } | |
| 173 | |
| 174 int | |
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175 _fini(void) |
| 0 | 176 { |
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177 int error; |
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178 |
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179 error = mod_remove(&modlinkage); |
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180 |
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181 DTRACE_PROBE1(mod_remove, int, error); |
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182 |
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183 if (error) |
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184 return (error); |
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185 |
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186 mutex_destroy(&hs_mounttab_lock); |
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187 |
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188 /* |
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189 * Tear down the operations vectors |
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190 */ |
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191 (void) vfs_freevfsops_by_type(hsfsfstype); |
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192 vn_freevnodeops(hsfs_vnodeops); |
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193 |
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194 hs_fini_hsnode_cache(); |
| 5312 | 195 hsched_fini_caches(); |
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196 return (0); |
| 0 | 197 } |
| 198 | |
| 199 int | |
| 200 _info(struct modinfo *modinfop) | |
| 201 { | |
| 202 return (mod_info(&modlinkage, modinfop)); | |
| 203 } | |
| 204 | |
| 205 #define BDEVFLAG(dev) ((devopsp[getmajor(dev)])->devo_cb_ops->cb_flag) | |
| 206 | |
| 207 kmutex_t hs_mounttab_lock; | |
| 208 struct hsfs *hs_mounttab = NULL; | |
| 209 | |
| 210 /* default mode, uid, gid */ | |
| 211 mode_t hsfs_default_mode = 0555; | |
| 212 uid_t hsfs_default_uid = 0; | |
| 213 gid_t hsfs_default_gid = 3; | |
| 214 | |
| 5312 | 215 extern void hsched_init(struct hsfs *fsp, int fsid, |
| 216 struct modlinkage *modlinkage); | |
| 217 extern void hsched_fini(struct hsfs_queue *hqueue); | |
| 218 extern void hsfs_init_kstats(struct hsfs *fsp, int fsid); | |
| 219 extern void hsfs_fini_kstats(struct hsfs *fsp); | |
| 220 | |
| 0 | 221 static int hsfs_mount(struct vfs *vfsp, struct vnode *mvp, |
| 222 struct mounta *uap, struct cred *cr); | |
| 223 static int hsfs_unmount(struct vfs *vfsp, int, struct cred *cr); | |
| 224 static int hsfs_root(struct vfs *vfsp, struct vnode **vpp); | |
| 225 static int hsfs_statvfs(struct vfs *vfsp, struct statvfs64 *sbp); | |
| 226 static int hsfs_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp); | |
| 227 static int hsfs_mountroot(struct vfs *, enum whymountroot); | |
| 228 | |
| 229 static int hs_mountfs(struct vfs *vfsp, dev_t dev, char *path, | |
| 230 mode_t mode, int flags, struct cred *cr, int isroot); | |
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231 static int hs_getrootvp(struct vfs *vfsp, struct hsfs *fsp, size_t pathsize); |
| 0 | 232 static int hs_findhsvol(struct hsfs *fsp, struct vnode *vp, |
| 233 struct hs_volume *hvp); | |
| 234 static int hs_parsehsvol(struct hsfs *fsp, uchar_t *volp, | |
| 235 struct hs_volume *hvp); | |
| 236 static int hs_findisovol(struct hsfs *fsp, struct vnode *vp, | |
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237 struct hs_volume *hvp, |
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238 struct hs_volume *svp, |
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239 struct hs_volume *jvp); |
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240 static int hs_joliet_level(uchar_t *volp); |
| 0 | 241 static int hs_parseisovol(struct hsfs *fsp, uchar_t *volp, |
| 242 struct hs_volume *hvp); | |
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243 static void hs_copylabel(struct hs_volume *, unsigned char *, int); |
| 0 | 244 static int hs_getmdev(struct vfs *, char *fspec, int flags, dev_t *pdev, |
| 245 mode_t *mode, cred_t *cr); | |
| 246 static int hs_findvoldesc(dev_t rdev, int desc_sec); | |
| 247 | |
| 248 static int | |
| 249 hsfsinit(int fstype, char *name) | |
| 250 { | |
| 251 static const fs_operation_def_t hsfs_vfsops_template[] = { | |
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252 VFSNAME_MOUNT, { .vfs_mount = hsfs_mount }, |
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253 VFSNAME_UNMOUNT, { .vfs_unmount = hsfs_unmount }, |
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254 VFSNAME_ROOT, { .vfs_root = hsfs_root }, |
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255 VFSNAME_STATVFS, { .vfs_statvfs = hsfs_statvfs }, |
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256 VFSNAME_VGET, { .vfs_vget = hsfs_vget }, |
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257 VFSNAME_MOUNTROOT, { .vfs_mountroot = hsfs_mountroot }, |
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258 NULL, NULL |
| 0 | 259 }; |
| 260 int error; | |
| 261 | |
| 262 error = vfs_setfsops(fstype, hsfs_vfsops_template, NULL); | |
| 263 if (error != 0) { | |
| 264 cmn_err(CE_WARN, "hsfsinit: bad vfs ops template"); | |
| 265 return (error); | |
| 266 } | |
| 267 | |
| 268 error = vn_make_ops(name, hsfs_vnodeops_template, &hsfs_vnodeops); | |
| 269 if (error != 0) { | |
| 270 (void) vfs_freevfsops_by_type(fstype); | |
| 271 cmn_err(CE_WARN, "hsfsinit: bad vnode ops template"); | |
| 272 return (error); | |
| 273 } | |
| 274 | |
| 275 hsfsfstype = fstype; | |
| 276 mutex_init(&hs_mounttab_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 277 hs_init_hsnode_cache(); | |
| 5312 | 278 hsched_init_caches(); |
| 0 | 279 return (0); |
| 280 } | |
| 281 | |
| 282 /*ARGSUSED*/ | |
| 283 static int | |
| 284 hsfs_mount(struct vfs *vfsp, struct vnode *mvp, | |
| 285 struct mounta *uap, struct cred *cr) | |
| 286 { | |
| 287 int vnode_busy; | |
| 288 dev_t dev; | |
| 289 struct pathname dpn; | |
| 290 int error; | |
| 291 mode_t mode; | |
| 292 int flags; /* this will hold the mount specific data */ | |
| 293 | |
| 294 if ((error = secpolicy_fs_mount(cr, mvp, vfsp)) != 0) | |
| 295 return (error); | |
| 296 | |
| 297 if (mvp->v_type != VDIR) | |
| 298 return (ENOTDIR); | |
| 299 | |
| 300 /* mount option must be read only, else mount will be rejected */ | |
| 301 if (!(uap->flags & MS_RDONLY)) | |
| 302 return (EROFS); | |
| 303 | |
| 304 /* | |
| 305 * We already told the framework that we don't support remounting. | |
| 306 */ | |
| 307 ASSERT(!(uap->flags & MS_REMOUNT)); | |
| 308 | |
| 309 mutex_enter(&mvp->v_lock); | |
| 310 vnode_busy = (mvp->v_count != 1) || (mvp->v_flag & VROOT); | |
| 311 mutex_exit(&mvp->v_lock); | |
| 312 | |
| 313 if ((uap->flags & MS_OVERLAY) == 0 && vnode_busy) { | |
| 314 return (EBUSY); | |
| 315 } | |
| 316 | |
| 317 /* | |
| 318 * Check for the options that actually affect things | |
| 319 * at our level. | |
| 320 */ | |
| 321 flags = 0; | |
| 322 if (vfs_optionisset(vfsp, HOPT_NOMAPLCASE, NULL)) | |
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323 flags |= HSFSMNT_NOMAPLCASE; |
| 0 | 324 if (vfs_optionisset(vfsp, HOPT_NOTRAILDOT, NULL)) |
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325 flags |= HSFSMNT_NOTRAILDOT; |
| 0 | 326 if (vfs_optionisset(vfsp, HOPT_NRR, NULL)) |
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327 flags |= HSFSMNT_NORRIP; |
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328 if (vfs_optionisset(vfsp, HOPT_NOJOLIET, NULL)) |
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329 flags |= HSFSMNT_NOJOLIET; |
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330 if (vfs_optionisset(vfsp, HOPT_JOLIETLONG, NULL)) |
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331 flags |= HSFSMNT_JOLIETLONG; |
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332 if (vfs_optionisset(vfsp, HOPT_NOVERS2, NULL)) |
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333 flags |= HSFSMNT_NOVERS2; |
| 0 | 334 |
| 335 error = pn_get(uap->dir, (uap->flags & MS_SYSSPACE) ? | |
| 336 UIO_SYSSPACE : UIO_USERSPACE, &dpn); | |
| 337 if (error) | |
| 338 return (error); | |
| 339 | |
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340 error = hs_getmdev(vfsp, uap->spec, uap->flags, &dev, &mode, cr); |
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341 if (error != 0) { |
| 0 | 342 pn_free(&dpn); |
| 343 return (error); | |
| 344 } | |
| 345 | |
| 346 /* | |
| 347 * If the device is a tape, return error | |
| 348 */ | |
| 349 if ((BDEVFLAG(dev) & D_TAPE) == D_TAPE) { | |
| 350 pn_free(&dpn); | |
| 351 return (ENOTBLK); | |
| 352 } | |
| 353 | |
| 354 /* | |
| 355 * Mount the filesystem. | |
| 356 */ | |
| 357 error = hs_mountfs(vfsp, dev, dpn.pn_path, mode, flags, cr, 0); | |
| 358 pn_free(&dpn); | |
| 359 return (error); | |
| 360 } | |
| 361 | |
| 362 /*ARGSUSED*/ | |
| 363 static int | |
| 364 hsfs_unmount( | |
| 365 struct vfs *vfsp, | |
| 366 int flag, | |
| 367 struct cred *cr) | |
| 368 { | |
| 369 struct hsfs **tspp; | |
| 370 struct hsfs *fsp; | |
| 371 | |
| 372 if (secpolicy_fs_unmount(cr, vfsp) != 0) | |
| 373 return (EPERM); | |
| 374 | |
| 375 /* | |
| 376 * forced unmount is not supported by this file system | |
| 377 * and thus, ENOTSUP is being returned. | |
| 378 */ | |
| 379 if (flag & MS_FORCE) | |
| 380 return (ENOTSUP); | |
| 381 | |
| 382 fsp = VFS_TO_HSFS(vfsp); | |
| 383 | |
| 384 if (fsp->hsfs_rootvp->v_count != 1) | |
| 385 return (EBUSY); | |
| 386 | |
| 387 /* destroy all old pages and hsnodes for this vfs */ | |
| 388 if (hs_synchash(vfsp)) | |
| 389 return (EBUSY); | |
| 390 | |
| 391 mutex_enter(&hs_mounttab_lock); | |
| 392 for (tspp = &hs_mounttab; *tspp != NULL; tspp = &(*tspp)->hsfs_next) { | |
| 393 if (*tspp == fsp) | |
| 394 break; | |
| 395 } | |
| 396 if (*tspp == NULL) { | |
| 397 mutex_exit(&hs_mounttab_lock); | |
| 398 panic("hsfs_unmount: vfs not mounted?"); | |
| 399 /*NOTREACHED*/ | |
| 400 } | |
| 401 | |
| 402 *tspp = fsp->hsfs_next; | |
| 403 | |
| 404 mutex_exit(&hs_mounttab_lock); | |
| 405 | |
| 5312 | 406 hsfs_fini_kstats(fsp); |
| 5331 | 407 (void) VOP_CLOSE(fsp->hsfs_devvp, FREAD, 1, (offset_t)0, cr, NULL); |
| 0 | 408 VN_RELE(fsp->hsfs_devvp); |
| 409 /* free path table space */ | |
| 410 if (fsp->hsfs_ptbl != NULL) | |
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411 kmem_free(fsp->hsfs_ptbl, (size_t)fsp->hsfs_vol.ptbl_len); |
| 0 | 412 /* free path table index table */ |
| 413 if (fsp->hsfs_ptbl_idx != NULL) | |
| 414 kmem_free(fsp->hsfs_ptbl_idx, (size_t) | |
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415 (fsp->hsfs_ptbl_idx_size * sizeof (struct ptable_idx))); |
| 0 | 416 |
| 417 /* free "mounted on" pathame */ | |
| 418 if (fsp->hsfs_fsmnt != NULL) | |
| 419 kmem_free(fsp->hsfs_fsmnt, strlen(fsp->hsfs_fsmnt) + 1); | |
| 420 | |
| 5312 | 421 hsched_fini(fsp->hqueue); |
| 422 kmem_free(fsp->hqueue, sizeof (struct hsfs_queue)); | |
| 423 | |
| 0 | 424 mutex_destroy(&fsp->hsfs_free_lock); |
| 425 rw_destroy(&fsp->hsfs_hash_lock); | |
| 426 | |
| 427 kmem_free(fsp, sizeof (*fsp)); | |
| 428 return (0); | |
| 429 } | |
| 430 | |
| 431 /*ARGSUSED*/ | |
| 432 static int | |
| 433 hsfs_root(struct vfs *vfsp, struct vnode **vpp) | |
| 434 { | |
| 435 *vpp = (VFS_TO_HSFS(vfsp))->hsfs_rootvp; | |
| 436 VN_HOLD(*vpp); | |
| 437 return (0); | |
| 438 } | |
| 439 | |
| 440 /*ARGSUSED*/ | |
| 441 static int | |
| 442 hsfs_statvfs(struct vfs *vfsp, struct statvfs64 *sbp) | |
| 443 { | |
| 444 struct hsfs *fsp; | |
| 445 dev32_t d32; | |
| 446 | |
| 447 fsp = VFS_TO_HSFS(vfsp); | |
| 448 if (fsp->hsfs_magic != HSFS_MAGIC) | |
| 449 return (EINVAL); | |
| 450 bzero(sbp, sizeof (*sbp)); | |
| 451 sbp->f_bsize = vfsp->vfs_bsize; | |
| 452 sbp->f_frsize = sbp->f_bsize; /* no fragment, same as block size */ | |
| 453 sbp->f_blocks = (fsblkcnt64_t)fsp->hsfs_vol.vol_size; | |
| 454 | |
| 455 sbp->f_bfree = (fsblkcnt64_t)0; | |
| 456 sbp->f_bavail = (fsblkcnt64_t)0; | |
| 457 sbp->f_files = (fsfilcnt64_t)-1; | |
| 458 sbp->f_ffree = (fsfilcnt64_t)0; | |
| 459 sbp->f_favail = (fsfilcnt64_t)0; | |
| 460 (void) cmpldev(&d32, vfsp->vfs_dev); | |
| 461 sbp->f_fsid = d32; | |
| 462 (void) strcpy(sbp->f_basetype, vfssw[vfsp->vfs_fstype].vsw_name); | |
| 463 sbp->f_flag = vf_to_stf(vfsp->vfs_flag); | |
| 464 sbp->f_namemax = fsp->hsfs_namemax; | |
| 465 (void) strcpy(sbp->f_fstr, fsp->hsfs_vol.vol_id); | |
| 466 | |
| 467 return (0); | |
| 468 } | |
| 469 | |
| 470 /* | |
| 471 * Previously nodeid was declared as uint32_t. This has been changed | |
| 472 * to conform better with the ISO9660 standard. The standard states that | |
| 473 * a LBN can be a 32 bit number, as the MAKE_NODEID macro shifts this | |
| 474 * LBN 11 places left (LBN_TO_BYTE) and then shifts the result 5 right | |
| 475 * (divide by 32) we are left with the potential of an overflow if | |
| 476 * confined to a 32 bit value. | |
| 477 */ | |
| 478 | |
| 479 static int | |
| 480 hsfs_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp) | |
| 481 { | |
| 482 struct hsfid *fid; | |
| 483 struct hsfs *fsp; | |
| 484 ino64_t nodeid; | |
| 485 int error; | |
| 486 | |
| 487 fsp = (struct hsfs *)VFS_TO_HSFS(vfsp); | |
| 488 fid = (struct hsfid *)fidp; | |
| 489 | |
| 490 /* | |
| 491 * Look for vnode on hashlist. | |
| 492 * If found, it's now active and the refcnt was incremented. | |
| 493 */ | |
| 494 | |
| 495 rw_enter(&fsp->hsfs_hash_lock, RW_READER); | |
| 496 | |
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497 nodeid = fid->hf_ino; |
| 0 | 498 |
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499 if ((*vpp = hs_findhash(nodeid, fid->hf_dir_lbn, |
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500 (uint_t)fid->hf_dir_off, vfsp)) == NULL) { |
| 0 | 501 /* |
| 502 * Not in cache, so we need to remake it. | |
| 503 * hs_remakenode() will read the directory entry | |
| 504 * and then check again to see if anyone else has | |
| 505 * put it in the cache. | |
| 506 */ | |
| 507 rw_exit(&fsp->hsfs_hash_lock); | |
| 508 error = hs_remakenode(fid->hf_dir_lbn, (uint_t)fid->hf_dir_off, | |
| 509 vfsp, vpp); | |
| 510 return (error); | |
| 511 } | |
| 512 rw_exit(&fsp->hsfs_hash_lock); | |
| 513 return (0); | |
| 514 } | |
| 515 | |
| 516 | |
| 517 #define CHECKSUM_SIZE (64 * 1024) | |
| 518 | |
| 519 /* | |
| 520 * Compute a CD-ROM fsid by checksumming the first 64K of data on the CD | |
| 521 * We use the 'fsp' argument to determine the location of the root | |
| 522 * directory entry, and we start reading from there. | |
| 523 */ | |
| 524 static int | |
| 525 compute_cdrom_id(struct hsfs *fsp, vnode_t *devvp) | |
| 526 { | |
| 527 uint_t secno; | |
| 528 struct hs_volume *hsvp = &fsp->hsfs_vol; | |
| 529 struct buf *bp; | |
| 530 int error; | |
| 531 int fsid; | |
| 532 | |
| 533 secno = hsvp->root_dir.ext_lbn >> hsvp->lbn_secshift; | |
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534 bp = bread(devvp->v_rdev, secno * 4, CHECKSUM_SIZE); |
| 0 | 535 error = geterror(bp); |
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536 |
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537 /* |
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538 * An error on read or a partial read means we asked |
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539 * for a nonexistant/corrupted piece of the device |
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540 * (including past-the-end of the media). Don't |
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541 * try to use the checksumming method then. |
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542 */ |
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543 if (!error && bp->b_bcount == CHECKSUM_SIZE) { |
| 0 | 544 int *ibuf = (int *)bp->b_un.b_addr; |
| 545 int i; | |
| 546 | |
| 547 fsid = 0; | |
| 548 | |
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549 for (i = 0; i < CHECKSUM_SIZE / sizeof (int); i++) |
| 0 | 550 fsid ^= ibuf[ i ]; |
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551 } else { |
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552 /* |
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553 * Fallback - use creation date |
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554 */ |
| 0 | 555 fsid = hsvp->cre_date.tv_sec; |
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556 } |
| 0 | 557 |
| 558 brelse(bp); | |
| 559 | |
| 560 return (fsid); | |
| 561 } | |
| 562 | |
| 563 | |
| 564 /*ARGSUSED*/ | |
| 565 static int | |
| 566 hs_mountfs( | |
| 567 struct vfs *vfsp, | |
| 568 dev_t dev, | |
| 569 char *path, | |
| 570 mode_t mode, | |
| 571 int mount_flags, | |
| 572 struct cred *cr, | |
| 573 int isroot) | |
| 574 { | |
| 575 struct vnode *devvp; | |
| 576 struct hsfs *tsp; | |
| 577 struct hsfs *fsp = NULL; | |
| 578 struct vattr vap; | |
| 579 struct hsnode *hp; | |
| 580 int error; | |
| 581 struct timeval tv; | |
| 582 int fsid; | |
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583 int use_rrip; |
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584 int use_vers2; |
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585 int use_joliet; |
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586 int has_rrip = 0; |
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587 int has_vers2 = 0; |
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588 int has_joliet = 0; |
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589 int force_rrip_off; |
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590 int force_vers2_off; |
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591 int force_joliet_off; |
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592 size_t pathbufsz = strlen(path) + 1; |
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593 int redo_rootvp; |
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594 |
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595 struct hs_volume *svp = NULL; /* Supplemental VD for ISO-9660:1999 */ |
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596 struct hs_volume *jvp = NULL; /* Joliet VD */ |
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597 |
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598 /* |
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599 * The rules for which extension will be used are: |
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600 * 1. No specific mount options given: |
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601 * - use rrip if available |
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602 * - use ISO9660:1999 if available |
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603 * - use joliet if available. |
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604 * 2. rrip/ISO9660:1999/joliet explicitly disabled via mount option: |
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605 * - use next "lower" extension |
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606 * 3. joliet/ISO9660:1999/rrip explicitly requested via mount option: |
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607 * - disable rrip support even if available |
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608 * - disable IOS9660:1999 support even if available |
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609 * |
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610 * We need to adjust these flags as we discover the extensions |
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611 * present. See below. These are just the starting values. |
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612 */ |
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613 use_rrip = (mount_flags & HSFSMNT_NORRIP) == 0; |
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614 use_vers2 = (mount_flags & HSFSMNT_NOVERS2) == 0; |
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615 use_joliet = (mount_flags & HSFSMNT_NOJOLIET) == 0; |
| 0 | 616 |
| 617 /* | |
| 618 * Open the device | |
| 619 */ | |
| 620 devvp = makespecvp(dev, VBLK); | |
| 621 ASSERT(devvp != 0); | |
| 622 | |
| 623 /* | |
| 624 * Open the target device (file) for read only. | |
| 625 */ | |
| 5331 | 626 if (error = VOP_OPEN(&devvp, FREAD, cr, NULL)) { |
| 0 | 627 VN_RELE(devvp); |
| 628 return (error); | |
| 629 } | |
| 630 | |
| 631 /* | |
| 632 * Refuse to go any further if this | |
| 633 * device is being used for swapping | |
| 634 */ | |
| 635 if (IS_SWAPVP(common_specvp(devvp))) { | |
| 636 error = EBUSY; | |
| 637 goto cleanup; | |
| 638 } | |
| 639 | |
| 640 vap.va_mask = AT_SIZE; | |
| 5331 | 641 if ((error = VOP_GETATTR(devvp, &vap, ATTR_COMM, cr, NULL)) != 0) { |
| 0 | 642 cmn_err(CE_NOTE, "Cannot get attributes of the CD-ROM driver"); |
| 643 goto cleanup; | |
| 644 } | |
| 645 | |
| 646 /* | |
| 647 * Make sure we have a nonzero size partition. | |
| 648 * The current version of the SD driver will *not* fail the open | |
| 649 * of such a partition so we have to check for it here. | |
| 650 */ | |
| 651 if (vap.va_size == 0) { | |
| 652 error = ENXIO; | |
| 653 goto cleanup; | |
| 654 } | |
| 655 | |
| 656 /* | |
| 657 * Init a new hsfs structure. | |
| 658 */ | |
| 659 fsp = kmem_zalloc(sizeof (*fsp), KM_SLEEP); | |
|
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660 svp = kmem_zalloc(sizeof (*svp), KM_SLEEP); |
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661 jvp = kmem_zalloc(sizeof (*jvp), KM_SLEEP); |
| 0 | 662 |
| 663 /* hardwire perms, uid, gid */ | |
| 664 fsp->hsfs_vol.vol_uid = hsfs_default_uid; | |
| 665 fsp->hsfs_vol.vol_gid = hsfs_default_gid; | |
| 666 fsp->hsfs_vol.vol_prot = hsfs_default_mode; | |
|
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667 svp->vol_uid = hsfs_default_uid; |
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668 svp->vol_gid = hsfs_default_gid; |
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669 svp->vol_prot = hsfs_default_mode; |
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670 jvp->vol_uid = hsfs_default_uid; |
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671 jvp->vol_gid = hsfs_default_gid; |
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672 jvp->vol_prot = hsfs_default_mode; |
| 0 | 673 |
| 674 /* | |
| 675 * Look for a Standard File Structure Volume Descriptor, | |
| 676 * of which there must be at least one. | |
| 677 * If found, check for volume size consistency. | |
|
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678 * |
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679 * If svp->lbn_size is != 0, we did find a ISO-9660:1999 SVD |
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680 * If jvp->lbn_size is != 0, we did find a Joliet SVD. |
| 0 | 681 */ |
|
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682 fsp->hsfs_namemax = ISO_FILE_NAMELEN; |
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683 fsp->hsfs_namelen = ISO_FILE_NAMELEN; |
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684 error = hs_findisovol(fsp, devvp, &fsp->hsfs_vol, svp, jvp); |
|
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685 if (error == EINVAL) /* no iso 9660 - try high sierra ... */ |
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686 error = hs_findhsvol(fsp, devvp, &fsp->hsfs_vol); |
| 0 | 687 |
| 688 if (error) | |
| 689 goto cleanup; | |
| 690 | |
|
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691 DTRACE_PROBE4(findvol, |
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692 struct hsfs *, fsp, |
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693 struct hs_volume *, &fsp->hsfs_vol, |
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694 struct hs_volume *, svp, |
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695 struct hs_volume *, jvp); |
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696 |
| 0 | 697 /* |
| 698 * Generate a file system ID from the CD-ROM, | |
| 699 * and check it for uniqueness. | |
| 700 * | |
| 701 * What we are aiming for is some chance of integrity | |
| 702 * across disk change. That is, if a client has an fhandle, | |
| 703 * it will be valid as long as the same disk is mounted. | |
| 704 */ | |
| 705 fsid = compute_cdrom_id(fsp, devvp); | |
| 706 | |
| 707 mutex_enter(&hs_mounttab_lock); | |
| 708 | |
| 709 if (fsid == 0 || fsid == -1) { | |
| 710 uniqtime(&tv); | |
| 711 fsid = tv.tv_sec; | |
| 712 } else /* make sure that the fsid is unique */ | |
| 713 for (tsp = hs_mounttab; tsp != NULL; tsp = tsp->hsfs_next) { | |
| 714 if (fsid == tsp->hsfs_vfs->vfs_fsid.val[0]) { | |
| 715 uniqtime(&tv); | |
| 716 fsid = tv.tv_sec; | |
| 717 break; | |
| 718 } | |
| 719 } | |
| 720 | |
| 721 fsp->hsfs_next = hs_mounttab; | |
| 722 hs_mounttab = fsp; | |
| 723 | |
| 724 fsp->hsfs_devvp = devvp; | |
| 725 fsp->hsfs_vfs = vfsp; | |
|
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726 fsp->hsfs_fsmnt = kmem_alloc(pathbufsz, KM_SLEEP); |
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727 (void) strlcpy(fsp->hsfs_fsmnt, path, pathbufsz); |
| 0 | 728 |
| 729 mutex_init(&fsp->hsfs_free_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 730 rw_init(&fsp->hsfs_hash_lock, NULL, RW_DEFAULT, NULL); | |
| 731 | |
| 732 vfsp->vfs_data = (caddr_t)fsp; | |
| 733 vfsp->vfs_dev = dev; | |
| 734 vfsp->vfs_fstype = hsfsfstype; | |
| 735 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; /* %% */ | |
| 736 vfsp->vfs_fsid.val[0] = fsid; | |
| 737 vfsp->vfs_fsid.val[1] = hsfsfstype; | |
| 738 | |
|
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739 if (!hs_getrootvp(vfsp, fsp, pathbufsz)) { |
|
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740 DTRACE_PROBE1(rootvp__failed, struct hsfs *, fsp); |
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741 error = EINVAL; |
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742 goto cleanup; |
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|
743 } |
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744 DTRACE_PROBE1(rootvp, struct hsfs *, fsp); |
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|
745 |
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|
746 /* |
|
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|
747 * Attempt to discover a RR extension. |
|
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|
748 */ |
|
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|
749 if (use_rrip) { |
|
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|
750 hp = VTOH(fsp->hsfs_rootvp); |
|
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|
751 hs_check_root_dirent(fsp->hsfs_rootvp, &(hp->hs_dirent)); |
|
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|
752 } |
|
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changeset
|
753 |
|
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|
754 has_rrip = IS_RRIP_IMPLEMENTED(fsp); |
|
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|
755 has_vers2 = (svp->lbn_size != 0); |
|
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|
756 has_joliet = (jvp->lbn_size != 0); |
|
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|
757 |
|
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changeset
|
758 DTRACE_PROBE4(voltype__suggested, struct hsfs *, fsp, |
|
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|
759 int, use_rrip, int, use_vers2, int, use_joliet); |
|
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|
760 |
|
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changeset
|
761 DTRACE_PROBE4(voltype__actual, struct hsfs *, fsp, |
|
8188e64c9073
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|
762 int, has_rrip, int, has_vers2, int, has_joliet); |
|
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diff
changeset
|
763 |
|
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changeset
|
764 DTRACE_PROBE4(findvol, |
|
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|
765 struct hsfs *, fsp, |
|
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|
766 struct hs_volume *, &fsp->hsfs_vol, |
|
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|
767 struct hs_volume *, svp, |
|
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|
768 struct hs_volume *, jvp); |
|
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changeset
|
769 |
|
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|
770 force_rrip_off = !use_rrip || |
|
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|
771 (vfs_optionisset(vfsp, HOPT_JOLIET, NULL) && has_joliet) || |
|
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|
772 (vfs_optionisset(vfsp, HOPT_VERS2, NULL) && has_vers2); |
|
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changeset
|
773 |
|
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|
774 force_vers2_off = !use_vers2 || |
|
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|
775 (vfs_optionisset(vfsp, HOPT_JOLIET, NULL) && has_joliet); |
|
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|
776 |
|
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|
777 force_joliet_off = !use_joliet; |
|
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|
778 |
|
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|
779 DTRACE_PROBE4(voltype__force_off, struct hsfs *, fsp, |
|
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|
780 int, force_rrip_off, int, force_vers2_off, int, force_joliet_off); |
|
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|
781 |
|
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changeset
|
782 /* |
|
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changeset
|
783 * At the moment, we have references of all three possible |
|
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|
784 * extensions (RR, ISO9660:1999/v2 and Joliet) if present. |
|
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|
785 * |
|
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|
786 * The "active" volume descriptor is RRIP (or ISO9660:1988). |
|
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|
787 * We now switch to the user-requested one. |
|
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|
788 */ |
|
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|
789 redo_rootvp = 0; |
|
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|
790 |
|
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|
791 if (force_rrip_off || !has_rrip) { |
|
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|
792 if (has_vers2 && !force_vers2_off) { |
|
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|
793 VN_RELE(fsp->hsfs_rootvp); |
|
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|
794 bcopy(svp, &fsp->hsfs_vol, sizeof (struct hs_volume)); |
|
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|
795 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO_V2; |
|
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|
796 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; |
|
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|
797 redo_rootvp = 1; |
|
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|
798 has_joliet = 0; |
|
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|
799 } else if (has_joliet && !force_joliet_off) { |
|
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|
800 VN_RELE(fsp->hsfs_rootvp); |
|
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|
801 bcopy(jvp, &fsp->hsfs_vol, sizeof (struct hs_volume)); |
|
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|
802 fsp->hsfs_vol_type = HS_VOL_TYPE_JOLIET; |
|
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diff
changeset
|
803 vfsp->vfs_bsize = fsp->hsfs_vol.lbn_size; |
|
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|
804 redo_rootvp = 1; |
|
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changeset
|
805 has_vers2 = 0; |
|
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parents:
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|
806 } |
|
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parents:
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diff
changeset
|
807 } |
|
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diff
changeset
|
808 |
|
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changeset
|
809 if (redo_rootvp) { |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
810 /* |
|
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diff
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|
811 * Make sure not to use Rock Ridge. |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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changeset
|
812 */ |
|
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changeset
|
813 UNSET_IMPL_BIT(fsp, RRIP_BIT); |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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changeset
|
814 UNSET_SUSP_BIT(fsp); |
|
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changeset
|
815 has_rrip = 0; |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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|
816 |
|
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parents:
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diff
changeset
|
817 if (!hs_getrootvp(vfsp, fsp, pathbufsz)) { |
|
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diff
changeset
|
818 DTRACE_PROBE1(rootvp__failed, struct hsfs *, fsp); |
|
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parents:
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changeset
|
819 error = EINVAL; |
|
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parents:
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diff
changeset
|
820 goto cleanup; |
|
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parents:
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diff
changeset
|
821 } |
|
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parents:
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changeset
|
822 DTRACE_PROBE1(rootvp, struct hsfs *, fsp); |
|
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parents:
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changeset
|
823 } |
|
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changeset
|
824 if (IS_RRIP_IMPLEMENTED(fsp)) { |
|
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|
825 has_vers2 = 0; |
|
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parents:
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|
826 has_joliet = 0; |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
827 } |
|
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diff
changeset
|
828 if (force_vers2_off) |
|
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|
829 has_vers2 = 0; |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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|
830 if (force_joliet_off) |
|
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changeset
|
831 has_joliet = 0; |
|
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parents:
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|
832 DTRACE_PROBE4(voltype__taken, struct hsfs *, fsp, |
|
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|
833 int, has_rrip, int, has_vers2, int, has_joliet); |
|
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diff
changeset
|
834 |
|
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parents:
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changeset
|
835 /* |
|
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frankho
parents:
1488
diff
changeset
|
836 * mark root node as VROOT |
|
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parents:
1488
diff
changeset
|
837 */ |
|
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diff
changeset
|
838 fsp->hsfs_rootvp->v_flag |= VROOT; |
|
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parents:
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|
839 |
|
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frankho
parents:
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diff
changeset
|
840 /* Here we take care of some special case stuff for mountroot */ |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
841 if (isroot) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
842 fsp->hsfs_rootvp->v_rdev = devvp->v_rdev; |
|
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parents:
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diff
changeset
|
843 rootvp = fsp->hsfs_rootvp; |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
844 } |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
845 |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
846 if (IS_RRIP_IMPLEMENTED(fsp)) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
847 /* |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
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1488
diff
changeset
|
848 * if RRIP, don't copy NOMAPLCASE or NOTRAILDOT to hsfs_flags |
|
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parents:
1488
diff
changeset
|
849 */ |
|
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frankho
parents:
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diff
changeset
|
850 mount_flags &= ~(HSFSMNT_NOMAPLCASE | HSFSMNT_NOTRAILDOT); |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
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1488
diff
changeset
|
851 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
852 fsp->hsfs_namemax = RRIP_FILE_NAMELEN; |
|
8188e64c9073
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frankho
parents:
1488
diff
changeset
|
853 fsp->hsfs_namelen = RRIP_FILE_NAMELEN; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
854 |
|
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parents:
1488
diff
changeset
|
855 ASSERT(vfs_optionisset(vfsp, HOPT_RR, NULL)); |
|
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parents:
1488
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changeset
|
856 vfs_clearmntopt(vfsp, HOPT_VERS2); |
|
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parents:
1488
diff
changeset
|
857 vfs_clearmntopt(vfsp, HOPT_JOLIET); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
858 |
|
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parents:
1488
diff
changeset
|
859 } else switch (fsp->hsfs_vol_type) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
860 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
861 case HS_VOL_TYPE_HS: |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
862 case HS_VOL_TYPE_ISO: |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
863 default: |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
864 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
865 * if iso v1, don't allow trailing spaces in iso file names |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
866 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
867 mount_flags |= HSFSMNT_NOTRAILSPACE; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
868 fsp->hsfs_namemax = ISO_NAMELEN_V2_MAX; |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
869 fsp->hsfs_namelen = ISO_FILE_NAMELEN; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
870 vfs_clearmntopt(vfsp, HOPT_RR); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
871 vfs_clearmntopt(vfsp, HOPT_VERS2); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
872 vfs_clearmntopt(vfsp, HOPT_JOLIET); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
873 break; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
874 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
875 case HS_VOL_TYPE_ISO_V2: |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
876 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
877 * if iso v2, don't copy NOTRAILDOT to hsfs_flags |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
878 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
879 mount_flags &= ~HSFSMNT_NOTRAILDOT; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
880 mount_flags |= HSFSMNT_NOMAPLCASE | HSFSMNT_NOVERSION; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
881 fsp->hsfs_namemax = ISO_NAMELEN_V2_MAX; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
882 fsp->hsfs_namelen = ISO_NAMELEN_V2; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
883 vfs_setmntopt(vfsp, HOPT_VERS2, NULL, 0); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
884 vfs_clearmntopt(vfsp, HOPT_RR); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
885 vfs_clearmntopt(vfsp, HOPT_JOLIET); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
886 break; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
887 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
888 case HS_VOL_TYPE_JOLIET: |
|
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 * if Joliet, don't copy NOMAPLCASE or NOTRAILDOT to hsfs_flags |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
891 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
892 mount_flags &= ~(HSFSMNT_NOMAPLCASE | HSFSMNT_NOTRAILDOT); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
893 mount_flags |= HSFSMNT_NOMAPLCASE; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
894 if (mount_flags & HSFSMNT_JOLIETLONG) |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
895 fsp->hsfs_namemax = JOLIET_NAMELEN_MAX*3; /* UTF-8 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
896 else |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
897 fsp->hsfs_namemax = MAXNAMELEN-1; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
898 fsp->hsfs_namelen = JOLIET_NAMELEN*2; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
899 vfs_setmntopt(vfsp, HOPT_JOLIET, NULL, 0); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
900 vfs_clearmntopt(vfsp, HOPT_RR); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
901 vfs_clearmntopt(vfsp, HOPT_VERS2); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
902 break; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
903 } |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
904 |
|
4866
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
frankho
parents:
4399
diff
changeset
|
905 /* |
|
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
frankho
parents:
4399
diff
changeset
|
906 * Add the HSFSMNT_INODE pseudo mount flag to the current mount flags. |
|
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
frankho
parents:
4399
diff
changeset
|
907 */ |
|
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
frankho
parents:
4399
diff
changeset
|
908 fsp->hsfs_flags = mount_flags | (fsp->hsfs_flags & HSFSMNT_INODE); |
|
2900
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
909 |
| 5312 | 910 /* |
| 911 * Setup I/O Scheduling structures | |
| 912 */ | |
| 913 if (do_schedio) { | |
| 914 fsp->hqueue = kmem_alloc(sizeof (struct hsfs_queue), KM_SLEEP); | |
| 915 hsched_init(fsp, fsid, &modlinkage); | |
| 916 } | |
| 917 | |
| 918 /* | |
| 919 * Setup kstats | |
| 920 */ | |
| 921 hsfs_init_kstats(fsp, fsid); | |
| 922 | |
|
2900
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
923 DTRACE_PROBE1(mount__done, struct hsfs *, fsp); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
924 |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
925 /* |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
926 * set the magic word |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
927 */ |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
928 fsp->hsfs_magic = HSFS_MAGIC; |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
929 mutex_exit(&hs_mounttab_lock); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
frankho
parents:
1488
diff
changeset
|
930 |
|
4866
34d9e5474e96
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931 kmem_free(svp, sizeof (*svp)); |
|
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932 kmem_free(jvp, sizeof (*jvp)); |
|
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|
933 |
|
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934 return (0); |
|
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935 |
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|
936 cleanup: |
| 5331 | 937 (void) VOP_CLOSE(devvp, FREAD, 1, (offset_t)0, cr, NULL); |
|
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938 VN_RELE(devvp); |
|
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939 if (fsp) |
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940 kmem_free(fsp, sizeof (*fsp)); |
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941 if (svp) |
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942 kmem_free(svp, sizeof (*svp)); |
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943 if (jvp) |
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944 kmem_free(jvp, sizeof (*jvp)); |
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945 return (error); |
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946 } |
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947 |
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948 /* |
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949 * Get the rootvp associated with fsp->hsfs_vol |
|
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950 */ |
|
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951 static int |
|
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952 hs_getrootvp( |
|
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953 struct vfs *vfsp, |
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954 struct hsfs *fsp, |
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955 size_t pathsize) |
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956 { |
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957 struct hsnode *hp; |
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958 |
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959 ASSERT(pathsize == strlen(fsp->hsfs_fsmnt) + 1); |
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960 |
| 0 | 961 /* |
| 962 * If the root directory does not appear to be | |
| 963 * valid, use what it points to as "." instead. | |
| 964 * Some Defense Mapping Agency disks are non-conformant | |
| 965 * in this way. | |
| 966 */ | |
| 967 if (!hsfs_valid_dir(&fsp->hsfs_vol.root_dir)) { | |
| 968 hs_log_bogus_disk_warning(fsp, HSFS_ERR_BAD_ROOT_DIR, 0); | |
| 969 if (hs_remakenode(fsp->hsfs_vol.root_dir.ext_lbn, | |
|
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970 (uint_t)0, vfsp, &fsp->hsfs_rootvp)) { |
|
1025
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|
971 hs_mounttab = hs_mounttab->hsfs_next; |
|
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6300064 hsfs_spec.h has developed a southern drawl.
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972 mutex_destroy(&fsp->hsfs_free_lock); |
|
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6300064 hsfs_spec.h has developed a southern drawl.
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|
973 rw_destroy(&fsp->hsfs_hash_lock); |
|
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974 kmem_free(fsp->hsfs_fsmnt, pathsize); |
|
494
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|
975 mutex_exit(&hs_mounttab_lock); |
|
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976 return (0); |
| 0 | 977 } |
| 978 } else { | |
| 979 fsp->hsfs_rootvp = hs_makenode(&fsp->hsfs_vol.root_dir, | |
|
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980 fsp->hsfs_vol.root_dir.ext_lbn, 0, vfsp); |
| 0 | 981 } |
| 982 | |
| 983 /* XXX - ignore the path table for now */ | |
| 984 fsp->hsfs_ptbl = NULL; | |
| 985 hp = VTOH(fsp->hsfs_rootvp); | |
| 986 hp->hs_ptbl_idx = NULL; | |
| 987 | |
|
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988 return (1); |
| 0 | 989 } |
| 990 | |
| 991 /* | |
| 992 * hs_findhsvol() | |
| 993 * | |
| 994 * Locate the Standard File Structure Volume Descriptor and | |
| 995 * parse it into an hs_volume structure. | |
| 996 * | |
| 997 * XXX - May someday want to look for Coded Character Set FSVD, too. | |
| 998 */ | |
| 999 static int | |
| 1000 hs_findhsvol(struct hsfs *fsp, struct vnode *vp, struct hs_volume *hvp) | |
| 1001 { | |
| 1002 struct buf *secbp; | |
| 1003 int i; | |
|
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1004 int n; |
| 0 | 1005 uchar_t *volp; |
| 1006 int error; | |
| 1007 uint_t secno; | |
| 1008 | |
| 1009 secno = hs_findvoldesc(vp->v_rdev, HS_VOLDESC_SEC); | |
| 1010 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
| 1011 error = geterror(secbp); | |
| 1012 | |
| 1013 if (error != 0) { | |
| 1014 cmn_err(CE_NOTE, "hs_findhsvol: bread: error=(%d)", error); | |
| 1015 brelse(secbp); | |
| 1016 return (error); | |
| 1017 } | |
| 1018 | |
| 1019 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1020 | |
|
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1021 /* |
|
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1022 * To avoid that we read the whole medium in case that someone prepares |
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1023 * a malicious "fs image", we read at most 32 blocks. |
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1024 */ |
|
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1025 for (n = 0; n < 32 && |
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1026 HSV_DESC_TYPE(volp) != VD_EOV; n++) { |
| 0 | 1027 for (i = 0; i < HSV_ID_STRLEN; i++) |
| 1028 if (HSV_STD_ID(volp)[i] != HSV_ID_STRING[i]) | |
| 1029 goto cantfind; | |
| 1030 if (HSV_STD_VER(volp) != HSV_ID_VER) | |
| 1031 goto cantfind; | |
| 1032 switch (HSV_DESC_TYPE(volp)) { | |
| 1033 case VD_SFS: | |
| 1034 /* Standard File Structure */ | |
| 1035 fsp->hsfs_vol_type = HS_VOL_TYPE_HS; | |
| 1036 error = hs_parsehsvol(fsp, volp, hvp); | |
| 1037 brelse(secbp); | |
| 1038 return (error); | |
| 1039 | |
| 1040 case VD_CCFS: | |
| 1041 /* Coded Character File Structure */ | |
| 1042 case VD_BOOT: | |
| 1043 case VD_UNSPEC: | |
| 1044 case VD_EOV: | |
| 1045 break; | |
| 1046 } | |
| 1047 brelse(secbp); | |
| 1048 ++secno; | |
| 1049 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
| 1050 | |
| 1051 error = geterror(secbp); | |
| 1052 | |
| 1053 if (error != 0) { | |
| 1054 cmn_err(CE_NOTE, "hs_findhsvol: bread: error=(%d)", | |
|
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|
1055 error); |
| 0 | 1056 brelse(secbp); |
| 1057 return (error); | |
| 1058 } | |
| 1059 | |
| 1060 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1061 } | |
| 1062 cantfind: | |
| 1063 brelse(secbp); | |
| 1064 return (EINVAL); | |
| 1065 } | |
| 1066 | |
| 1067 /* | |
| 1068 * hs_parsehsvol | |
| 1069 * | |
| 1070 * Parse the Standard File Structure Volume Descriptor into | |
| 1071 * an hs_volume structure. We can't just bcopy it into the | |
| 1072 * structure because of byte-ordering problems. | |
| 1073 * | |
| 1074 */ | |
| 1075 static int | |
| 1076 hs_parsehsvol(struct hsfs *fsp, uchar_t *volp, struct hs_volume *hvp) | |
| 1077 { | |
| 1078 hvp->vol_size = HSV_VOL_SIZE(volp); | |
| 1079 hvp->lbn_size = HSV_BLK_SIZE(volp); | |
| 1080 if (hvp->lbn_size == 0) { | |
| 1081 cmn_err(CE_NOTE, "hs_parsehsvol: logical block size in the " | |
|
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|
1082 "SFSVD is zero"); |
| 0 | 1083 return (EINVAL); |
| 1084 } | |
| 1085 hvp->lbn_shift = ffs((long)hvp->lbn_size) - 1; | |
|
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|
1086 hvp->lbn_secshift = |
|
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|
1087 ffs((long)howmany(HS_SECTOR_SIZE, (int)hvp->lbn_size)) - 1; |
| 0 | 1088 hvp->lbn_maxoffset = hvp->lbn_size - 1; |
| 1089 hs_parse_longdate(HSV_cre_date(volp), &hvp->cre_date); | |
| 1090 hs_parse_longdate(HSV_mod_date(volp), &hvp->mod_date); | |
| 1091 hvp->file_struct_ver = HSV_FILE_STRUCT_VER(volp); | |
| 1092 hvp->ptbl_len = HSV_PTBL_SIZE(volp); | |
| 1093 hvp->vol_set_size = (ushort_t)HSV_SET_SIZE(volp); | |
| 1094 hvp->vol_set_seq = (ushort_t)HSV_SET_SEQ(volp); | |
| 1095 #if defined(_LITTLE_ENDIAN) | |
| 1096 hvp->ptbl_lbn = HSV_PTBL_MAN_LS(volp); | |
| 1097 #else | |
| 1098 hvp->ptbl_lbn = HSV_PTBL_MAN_MS(volp); | |
| 1099 #endif | |
|
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|
1100 hs_copylabel(hvp, HSV_VOL_ID(volp), 0); |
| 0 | 1101 |
| 1102 /* | |
| 1103 * Make sure that lbn_size is a power of two and otherwise valid. | |
| 1104 */ | |
| 1105 if (hvp->lbn_size & ~(1 << hvp->lbn_shift)) { | |
| 1106 cmn_err(CE_NOTE, | |
|
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|
1107 "hsfs: %d-byte logical block size not supported", |
|
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|
1108 hvp->lbn_size); |
| 0 | 1109 return (EINVAL); |
| 1110 } | |
| 1111 return (hs_parsedir(fsp, HSV_ROOT_DIR(volp), &hvp->root_dir, | |
|
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|
1112 (char *)NULL, (int *)NULL, HDE_ROOT_DIR_REC_SIZE)); |
| 0 | 1113 } |
| 1114 | |
| 1115 /* | |
| 1116 * hs_findisovol() | |
| 1117 * | |
| 1118 * Locate the Primary Volume Descriptor | |
| 1119 * parse it into an hs_volume structure. | |
| 1120 * | |
|
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1121 * XXX - Partition not yet done |
|
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|
1122 * |
|
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1123 * Except for fsp->hsfs_vol_type, no fsp member may be modified. |
|
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|
1124 * fsp->hsfs_vol is modified indirectly via the *hvp argument. |
| 0 | 1125 */ |
| 1126 static int | |
| 1127 hs_findisovol(struct hsfs *fsp, struct vnode *vp, | |
|
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|
1128 struct hs_volume *hvp, |
|
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1129 struct hs_volume *svp, |
|
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|
1130 struct hs_volume *jvp) |
| 0 | 1131 { |
| 1132 struct buf *secbp; | |
| 1133 int i; | |
|
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|
1134 int n; |
| 0 | 1135 uchar_t *volp; |
| 1136 int error; | |
| 1137 uint_t secno; | |
| 1138 int foundpvd = 0; | |
|
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1139 int foundsvd = 0; |
|
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1140 int foundjvd = 0; |
|
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|
1141 int pvd_sum = 0; |
| 0 | 1142 |
| 1143 secno = hs_findvoldesc(vp->v_rdev, ISO_VOLDESC_SEC); | |
| 1144 secbp = bread(vp->v_rdev, secno * 4, ISO_SECTOR_SIZE); | |
| 1145 error = geterror(secbp); | |
| 1146 | |
| 1147 if (error != 0) { | |
| 1148 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", error); | |
| 1149 brelse(secbp); | |
| 1150 return (error); | |
| 1151 } | |
| 1152 | |
| 1153 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1154 | |
|
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|
1155 /* |
|
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|
1156 * To avoid that we read the whole medium in case that someone prepares |
|
34d9e5474e96
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|
1157 * a malicious "fs image", we read at most 32 blocks. |
|
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|
1158 */ |
|
13750
6c5d0718e821
2974 hate having heap of hsfs headers
Richard Lowe <richlowe@richlowe.net>
parents:
13452
diff
changeset
|
1159 for (n = 0; n < 32 && ISO_DESC_TYPE(volp) != ISO_VD_EOV; n++) { |
| 0 | 1160 for (i = 0; i < ISO_ID_STRLEN; i++) |
| 1161 if (ISO_STD_ID(volp)[i] != ISO_ID_STRING[i]) | |
| 1162 goto cantfind; | |
| 1163 switch (ISO_DESC_TYPE(volp)) { | |
| 1164 case ISO_VD_PVD: | |
| 1165 /* Standard File Structure */ | |
|
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1166 if (ISO_STD_VER(volp) != ISO_ID_VER) |
|
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|
1167 goto cantfind; |
| 0 | 1168 if (foundpvd != 1) { |
| 1169 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; | |
| 1170 if (error = hs_parseisovol(fsp, volp, hvp)) { | |
| 1171 brelse(secbp); | |
| 1172 return (error); | |
| 1173 } | |
| 1174 foundpvd = 1; | |
|
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|
1175 for (i = 0; i < ISO_SECTOR_SIZE; i++) |
|
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|
1176 pvd_sum += volp[i]; |
| 0 | 1177 } |
| 1178 break; | |
| 1179 case ISO_VD_SVD: | |
| 1180 /* Supplementary Volume Descriptor */ | |
|
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|
1181 if (ISO_STD_VER(volp) == ISO_ID_VER2 && |
|
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|
1182 foundsvd != 1) { |
|
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|
1183 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; |
|
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|
1184 if (error = hs_parseisovol(fsp, volp, svp)) { |
|
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1185 brelse(secbp); |
|
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1186 return (error); |
|
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1187 } |
|
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1188 foundsvd = 1; |
|
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1189 } |
|
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1190 if (hs_joliet_level(volp) >= 1 && foundjvd != 1) { |
|
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1191 fsp->hsfs_vol_type = HS_VOL_TYPE_ISO; |
|
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1192 if (error = hs_parseisovol(fsp, volp, jvp)) { |
|
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1193 brelse(secbp); |
|
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|
1194 return (error); |
|
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|
1195 } |
|
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|
1196 foundjvd = 1; |
|
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|
1197 } |
| 0 | 1198 break; |
| 1199 case ISO_VD_BOOT: | |
| 1200 break; | |
| 1201 case ISO_VD_VPD: | |
| 1202 /* currently cannot handle partition */ | |
| 1203 break; | |
| 1204 case VD_EOV: | |
| 1205 break; | |
| 1206 } | |
| 1207 brelse(secbp); | |
| 1208 ++secno; | |
| 1209 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); | |
| 1210 error = geterror(secbp); | |
| 1211 | |
| 1212 if (error != 0) { | |
| 1213 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", | |
|
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|
1214 error); |
| 0 | 1215 brelse(secbp); |
| 1216 return (error); | |
| 1217 } | |
| 1218 | |
| 1219 volp = (uchar_t *)secbp->b_un.b_addr; | |
| 1220 } | |
|
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|
1221 for (n = 0; n < 16; n++) { |
|
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|
1222 brelse(secbp); |
|
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|
1223 ++secno; |
|
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|
1224 secbp = bread(vp->v_rdev, secno * 4, HS_SECTOR_SIZE); |
|
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|
1225 error = geterror(secbp); |
|
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|
1226 |
|
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|
1227 if (error != 0) { |
|
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|
1228 cmn_err(CE_NOTE, "hs_findisovol: bread: error=(%d)", |
|
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|
1229 error); |
|
34d9e5474e96
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|
1230 brelse(secbp); |
|
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|
1231 return (error); |
|
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|
1232 } |
|
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|
1233 |
|
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|
1234 /* |
|
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|
1235 * Check for the signature from mkisofs that grants that |
|
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|
1236 * the current filesystem allows to use the extent lbn as |
|
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|
1237 * inode number even in pure ISO9660 mode. |
|
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|
1238 */ |
|
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|
1239 volp = (uchar_t *)secbp->b_un.b_addr; |
|
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4294956 hsfs creates wrong inode numbers for hard links
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|
1240 if (strncmp((char *)volp, "MKI ", 4) == 0) { |
|
34d9e5474e96
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diff
changeset
|
1241 int sum; |
|
34d9e5474e96
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changeset
|
1242 |
|
34d9e5474e96
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changeset
|
1243 sum = volp[2045]; |
|
34d9e5474e96
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|
1244 sum *= 256; |
|
34d9e5474e96
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diff
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|
1245 sum += volp[2046]; |
|
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
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|
1246 sum *= 256; |
|
34d9e5474e96
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changeset
|
1247 sum += volp[2047]; |
|
34d9e5474e96
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changeset
|
1248 if (sum == pvd_sum) |
|
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changeset
|
1249 fsp->hsfs_flags |= HSFSMNT_INODE; |
|
34d9e5474e96
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diff
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|
1250 break; |
|
34d9e5474e96
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diff
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|
1251 } |
|
34d9e5474e96
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|
1252 } |
| 0 | 1253 if (foundpvd) { |
| 1254 brelse(secbp); | |
| 1255 return (0); | |
| 1256 } | |
| 1257 cantfind: | |
| 1258 brelse(secbp); | |
| 1259 return (EINVAL); | |
| 1260 } | |
|
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|
1261 |
|
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|
1262 /* |
|
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|
1263 * Return 0 if no Joliet is found |
|
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|
1264 * else return Joliet Level 1..3 |
|
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|
1265 */ |
|
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changeset
|
1266 static int |
|
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changeset
|
1267 hs_joliet_level(uchar_t *volp) |
|
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|
1268 { |
|
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diff
changeset
|
1269 if (ISO_std_ver(volp)[0] == ISO_ID_VER && |
|
8188e64c9073
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diff
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|
1270 ISO_svd_esc(volp)[0] == '%' && |
|
8188e64c9073
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|
1271 ISO_svd_esc(volp)[1] == '/') { |
|
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changeset
|
1272 |
|
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changeset
|
1273 switch (ISO_svd_esc(volp)[2]) { |
|
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diff
changeset
|
1274 |
|
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diff
changeset
|
1275 case '@': |
|
8188e64c9073
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changeset
|
1276 return (1); |
|
8188e64c9073
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changeset
|
1277 case 'C': |
|
8188e64c9073
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diff
changeset
|
1278 return (2); |
|
8188e64c9073
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diff
changeset
|
1279 case 'E': |
|
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PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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diff
changeset
|
1280 return (3); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
1488
diff
changeset
|
1281 } |
|
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diff
changeset
|
1282 } |
|
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1488
diff
changeset
|
1283 return (0); |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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1488
diff
changeset
|
1284 } |
|
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changeset
|
1285 |
| 0 | 1286 /* |
| 1287 * hs_parseisovol | |
| 1288 * | |
| 1289 * Parse the Primary Volume Descriptor into an hs_volume structure. | |
| 1290 * | |
| 1291 */ | |
| 1292 static int | |
| 1293 hs_parseisovol(struct hsfs *fsp, uchar_t *volp, struct hs_volume *hvp) | |
| 1294 { | |
| 1295 hvp->vol_size = ISO_VOL_SIZE(volp); | |
| 1296 hvp->lbn_size = ISO_BLK_SIZE(volp); | |
| 1297 if (hvp->lbn_size == 0) { | |
| 1298 cmn_err(CE_NOTE, "hs_parseisovol: logical block size in the " | |
|
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diff
changeset
|
1299 "PVD is zero"); |
| 0 | 1300 return (EINVAL); |
| 1301 } | |
| 1302 hvp->lbn_shift = ffs((long)hvp->lbn_size) - 1; | |
|
4866
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
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diff
changeset
|
1303 hvp->lbn_secshift = |
|
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
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parents:
4399
diff
changeset
|
1304 ffs((long)howmany(ISO_SECTOR_SIZE, (int)hvp->lbn_size)) - 1; |
| 0 | 1305 hvp->lbn_maxoffset = hvp->lbn_size - 1; |
| 1306 hs_parse_longdate(ISO_cre_date(volp), &hvp->cre_date); | |
| 1307 hs_parse_longdate(ISO_mod_date(volp), &hvp->mod_date); | |
| 1308 hvp->file_struct_ver = ISO_FILE_STRUCT_VER(volp); | |
| 1309 hvp->ptbl_len = ISO_PTBL_SIZE(volp); | |
| 1310 hvp->vol_set_size = (ushort_t)ISO_SET_SIZE(volp); | |
| 1311 hvp->vol_set_seq = (ushort_t)ISO_SET_SEQ(volp); | |
| 1312 #if defined(_LITTLE_ENDIAN) | |
| 1313 hvp->ptbl_lbn = ISO_PTBL_MAN_LS(volp); | |
| 1314 #else | |
| 1315 hvp->ptbl_lbn = ISO_PTBL_MAN_MS(volp); | |
| 1316 #endif | |
|
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diff
changeset
|
1317 hs_copylabel(hvp, ISO_VOL_ID(volp), hs_joliet_level(volp) >= 1); |
| 0 | 1318 |
| 1319 /* | |
| 1320 * Make sure that lbn_size is a power of two and otherwise valid. | |
| 1321 */ | |
| 1322 if (hvp->lbn_size & ~(1 << hvp->lbn_shift)) { | |
| 1323 cmn_err(CE_NOTE, | |
|
4866
34d9e5474e96
4294956 hsfs creates wrong inode numbers for hard links
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|
1324 "hsfs: %d-byte logical block size not supported", |
|
34d9e5474e96
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diff
changeset
|
1325 hvp->lbn_size); |
| 0 | 1326 return (EINVAL); |
| 1327 } | |
| 1328 return (hs_parsedir(fsp, ISO_ROOT_DIR(volp), &hvp->root_dir, | |
|
4866
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diff
changeset
|
1329 (char *)NULL, (int *)NULL, IDE_ROOT_DIR_REC_SIZE)); |
| 0 | 1330 } |
| 1331 | |
| 1332 /* | |
| 1333 * Common code for mount and umount. | |
| 1334 * Check that the user's argument is a reasonable | |
| 1335 * thing on which to mount, and return the device number if so. | |
| 1336 */ | |
| 1337 static int | |
| 1338 hs_getmdev(struct vfs *vfsp, char *fspec, int flags, dev_t *pdev, mode_t *mode, | |
| 1339 cred_t *cr) | |
| 1340 { | |
| 1341 int error; | |
| 6734 | 1342 struct vnode *svp = NULL; |
| 1343 struct vnode *lvp = NULL; | |
| 1344 struct vnode *bvp; | |
| 0 | 1345 struct vattr vap; |
| 1346 dev_t dev; | |
| 6734 | 1347 enum uio_seg fromspace = (flags & MS_SYSSPACE) ? |
| 1348 UIO_SYSSPACE : UIO_USERSPACE; | |
| 0 | 1349 |
| 1350 /* | |
| 6734 | 1351 * Look up the device/file to be mounted. |
| 0 | 1352 */ |
| 6734 | 1353 error = lookupname(fspec, fromspace, FOLLOW, NULLVPP, &svp); |
| 0 | 1354 if (error) { |
| 6734 | 1355 if (error == ENOENT) |
| 1356 error = ENODEV; | |
| 1357 goto out; | |
| 0 | 1358 } |
| 1359 | |
| 6734 | 1360 error = vfs_get_lofi(vfsp, &lvp); |
| 1361 | |
| 1362 if (error > 0) { | |
| 1363 if (error == ENOENT) | |
| 1364 error = ENODEV; | |
| 1365 goto out; | |
| 1366 } else if (error == 0) { | |
| 1367 bvp = lvp; | |
| 1368 } else { | |
| 1369 bvp = svp; | |
| 1370 | |
| 1371 if (bvp->v_type != VBLK) { | |
| 1372 error = ENOTBLK; | |
| 1373 goto out; | |
| 1374 } | |
| 1375 | |
| 1376 if ((error = secpolicy_spec_open(cr, bvp, FREAD)) != 0) | |
| 1377 goto out; | |
| 1378 } | |
| 1379 | |
| 1380 /* | |
| 1381 * Can we read from the device/file ? | |
| 1382 */ | |
| 1383 if ((error = VOP_ACCESS(svp, VREAD, 0, cr, NULL)) != 0) | |
| 1384 goto out; | |
| 1385 | |
| 0 | 1386 vap.va_mask = AT_MODE; /* get protection mode */ |
| 6734 | 1387 (void) VOP_GETATTR(bvp, &vap, 0, CRED(), NULL); |
| 0 | 1388 *mode = vap.va_mode; |
| 1389 | |
| 6734 | 1390 dev = *pdev = bvp->v_rdev; |
| 1391 | |
| 1392 error = EBUSY; | |
| 0 | 1393 |
| 1394 /* | |
| 1395 * Ensure that this device isn't already mounted, | |
| 1396 * unless this is a REMOUNT request or we are told to suppress | |
| 1397 * mount checks. | |
| 1398 */ | |
| 1399 if ((flags & MS_NOCHECK) == 0) { | |
| 1400 if (vfs_devmounting(dev, vfsp)) | |
| 6734 | 1401 goto out; |
| 0 | 1402 if (vfs_devismounted(dev) && !(flags & MS_REMOUNT)) |
| 6734 | 1403 goto out; |
| 0 | 1404 } |
| 1405 | |
| 6734 | 1406 if (getmajor(*pdev) >= devcnt) { |
| 1407 error = ENXIO; | |
| 1408 goto out; | |
| 1409 } | |
| 1410 | |
| 1411 error = 0; | |
| 1412 out: | |
| 1413 if (svp != NULL) | |
| 1414 VN_RELE(svp); | |
| 1415 if (lvp != NULL) | |
| 1416 VN_RELE(lvp); | |
| 1417 return (error); | |
| 0 | 1418 } |
| 1419 | |
| 1420 static void | |
|
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|
1421 hs_copylabel(struct hs_volume *hvp, unsigned char *label, int isjoliet) |
| 0 | 1422 { |
|
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|
1423 char lbuf[64]; /* hs_joliet_cp() creates 48 bytes at most */ |
|
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changeset
|
1424 |
|
8188e64c9073
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diff
changeset
|
1425 if (isjoliet) { |
|
8188e64c9073
PSARC 2006/509 HSFS extensions for Joliet/ISO9660:v2
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parents:
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diff
changeset
|
1426 /* |
|
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parents:
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diff
changeset
|
1427 * hs_joliet_cp() will output 16..48 bytes. |
|
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diff
changeset
|
1428 * We need to clear 'lbuf' to avoid junk chars past byte 15. |
|
8188e64c9073
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parents:
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diff
changeset
|
1429 */ |
|
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1430 bzero(lbuf, sizeof (lbuf)); |
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1431 (void) hs_joliet_cp((char *)label, lbuf, 32); |
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1432 label = (unsigned char *)lbuf; |
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1433 } |
| 0 | 1434 /* cdrom volid is at most 32 bytes */ |
| 1435 bcopy(label, hvp->vol_id, 32); | |
| 1436 hvp->vol_id[31] = NULL; | |
| 1437 } | |
| 1438 | |
| 1439 /* | |
| 1440 * Mount root file system. | |
| 1441 * "why" is ROOT_INIT on initial call, ROOT_REMOUNT if called to | |
| 1442 * remount the root file system, and ROOT_UNMOUNT if called to | |
| 1443 * unmount the root (e.g., as part of a system shutdown). | |
| 1444 * | |
| 1445 * XXX - this may be partially machine-dependent; it, along with the VFS_SWAPVP | |
| 1446 * operation, goes along with auto-configuration. A mechanism should be | |
| 1447 * provided by which machine-INdependent code in the kernel can say "get me the | |
| 1448 * right root file system" and "get me the right initial swap area", and have | |
| 1449 * that done in what may well be a machine-dependent fashion. | |
| 1450 * Unfortunately, it is also file-system-type dependent (NFS gets it via | |
| 1451 * bootparams calls, UFS gets it from various and sundry machine-dependent | |
| 1452 * mechanisms, as SPECFS does for swap). | |
| 1453 */ | |
| 1454 static int | |
| 1455 hsfs_mountroot(struct vfs *vfsp, enum whymountroot why) | |
| 1456 { | |
| 1457 int error; | |
| 1458 struct hsfs *fsp; | |
| 1459 struct hs_volume *fvolp; | |
| 1460 static int hsfsrootdone = 0; | |
| 1461 dev_t rootdev; | |
| 1462 mode_t mode = 0; | |
| 1463 | |
| 1464 if (why == ROOT_INIT) { | |
| 1465 if (hsfsrootdone++) | |
| 1466 return (EBUSY); | |
| 1467 rootdev = getrootdev(); | |
| 1468 if (rootdev == (dev_t)NODEV) | |
| 1469 return (ENODEV); | |
| 1470 vfsp->vfs_dev = rootdev; | |
| 1471 vfsp->vfs_flag |= VFS_RDONLY; | |
| 1472 } else if (why == ROOT_REMOUNT) { | |
| 1473 cmn_err(CE_NOTE, "hsfs_mountroot: ROOT_REMOUNT"); | |
| 1474 return (0); | |
| 1475 } else if (why == ROOT_UNMOUNT) { | |
| 1476 return (0); | |
| 1477 } | |
| 1478 error = vfs_lock(vfsp); | |
| 1479 if (error) { | |
| 1480 cmn_err(CE_NOTE, "hsfs_mountroot: couldn't get vfs_lock"); | |
| 1481 return (error); | |
| 1482 } | |
| 1483 | |
| 1484 error = hs_mountfs(vfsp, rootdev, "/", mode, 1, CRED(), 1); | |
| 1485 /* | |
| 1486 * XXX - assumes root device is not indirect, because we don't set | |
| 1487 * rootvp. Is rootvp used for anything? If so, make another arg | |
| 1488 * to mountfs. | |
| 1489 */ | |
| 1490 if (error) { | |
| 1491 vfs_unlock(vfsp); | |
| 1492 if (rootvp) { | |
| 1493 VN_RELE(rootvp); | |
| 1494 rootvp = (struct vnode *)0; | |
| 1495 } | |
| 1496 return (error); | |
| 1497 } | |
| 1498 if (why == ROOT_INIT) | |
| 1499 vfs_add((struct vnode *)0, vfsp, | |
| 1500 (vfsp->vfs_flag & VFS_RDONLY) ? MS_RDONLY : 0); | |
| 1501 vfs_unlock(vfsp); | |
| 1502 fsp = VFS_TO_HSFS(vfsp); | |
| 1503 fvolp = &fsp->hsfs_vol; | |
| 1504 #ifdef HSFS_CLKSET | |
| 1505 if (fvolp->cre_date.tv_sec == 0) { | |
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1506 cmn_err(CE_NOTE, "hsfs_mountroot: cre_date.tv_sec == 0"); |
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1507 if (fvolp->mod_date.tv_sec == 0) { |
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1508 cmn_err(CE_NOTE, |
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1509 "hsfs_mountroot: mod_date.tv_sec == 0"); |
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1510 cmn_err(CE_NOTE, "hsfs_mountroot: clkset(-1L)"); |
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1511 clkset(-1L); |
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1512 } else { |
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1513 clkset(fvolp->mod_date.tv_sec); |
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1514 } |
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1515 } else { |
| 0 | 1516 clkset(fvolp->mod_date.tv_sec); |
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1517 } |
| 0 | 1518 #else /* HSFS_CLKSET */ |
| 1519 clkset(-1L); | |
| 1520 #endif /* HSFS_CLKSET */ | |
| 1521 return (0); | |
| 1522 } | |
| 1523 | |
| 1524 /* | |
| 1525 * hs_findvoldesc() | |
| 1526 * | |
| 1527 * Return the sector where the volume descriptor lives. This is | |
| 1528 * a fixed value for "normal" cd-rom's, but can change for | |
| 1529 * multisession cd's. | |
| 1530 * | |
| 1531 * desc_sec is the same for high-sierra and iso 9660 formats, why | |
| 5331 | 1532 * there are two different #defines used in the code for this is |
| 0 | 1533 * beyond me. These are standards, cast in concrete, right? |
| 1534 * To be general, however, this function supports passing in different | |
| 1535 * values. | |
| 1536 */ | |
| 1537 static int | |
| 1538 hs_findvoldesc(dev_t rdev, int desc_sec) | |
| 1539 { | |
| 1540 int secno; | |
| 1541 int error; | |
| 1542 int rval; /* ignored */ | |
| 1543 | |
| 1544 #ifdef CDROMREADOFFSET | |
| 1545 /* | |
| 1546 * Issue the Read Offset ioctl directly to the | |
| 1547 * device. Ignore any errors and set starting | |
| 1548 * secno to the default, otherwise add the | |
| 1549 * VOLDESC sector number to the offset. | |
| 1550 */ | |
| 1551 error = cdev_ioctl(rdev, CDROMREADOFFSET, (intptr_t)&secno, | |
| 1552 FNATIVE|FKIOCTL|FREAD, CRED(), &rval); | |
| 1553 if (error) { | |
| 1554 secno = desc_sec; | |
| 1555 } else { | |
| 1556 secno += desc_sec; | |
| 1557 } | |
| 1558 #else | |
| 1559 secno = desc_sec; | |
| 1560 #endif | |
| 1561 | |
| 1562 return (secno); | |
| 1563 } |