-
-/*
- * xfs_vget - called by DMAPI and NFSD to get vnode from file handle
- */
-STATIC int
-xfs_vget(
- bhv_desc_t *bdp,
- vnode_t **vpp,
- fid_t *fidp)
-{
- xfs_mount_t *mp = XFS_BHVTOM(bdp);
- xfs_fid_t *xfid = (struct xfs_fid *)fidp;
- xfs_inode_t *ip;
- int error;
- xfs_ino_t ino;
- unsigned int igen;
-
- /*
- * Invalid. Since handles can be created in user space and passed in
- * via gethandle(), this is not cause for a panic.
- */
- if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len))
- return XFS_ERROR(EINVAL);
-
- ino = xfid->xfs_fid_ino;
- igen = xfid->xfs_fid_gen;
-
- /*
- * NFS can sometimes send requests for ino 0. Fail them gracefully.
- */
- if (ino == 0)
- return XFS_ERROR(ESTALE);
-
- error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
- if (error) {
- *vpp = NULL;
- return error;
- }
-
- if (ip == NULL) {
- *vpp = NULL;
- return XFS_ERROR(EIO);
- }
-
- if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
- xfs_iput_new(ip, XFS_ILOCK_SHARED);
- *vpp = NULL;
- return XFS_ERROR(ENOENT);
- }
-
- *vpp = XFS_ITOV(ip);
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
- return 0;
-}
-
-
-#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
-#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
-#define MNTOPT_LOGDEV "logdev" /* log device */
-#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
-#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
-#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
-#define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
-#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
-#define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
-#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
-#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
-#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
-#define MNTOPT_MTPT "mtpt" /* filesystem mount point */
-#define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
-#define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
-#define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
-#define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
-#define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
-#define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
-#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
-#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
- * unwritten extent conversion */
-#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
-#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
-#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
-#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
-#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
-#define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
- * in stat(). */
-#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
-#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
-
-STATIC unsigned long
-suffix_strtoul(const char *cp, char **endp, unsigned int base)
-{
- int last, shift_left_factor = 0;
- char *value = (char *)cp;
-
- last = strlen(value) - 1;
- if (value[last] == 'K' || value[last] == 'k') {
- shift_left_factor = 10;
- value[last] = '\0';
- }
- if (value[last] == 'M' || value[last] == 'm') {
- shift_left_factor = 20;
- value[last] = '\0';
- }
- if (value[last] == 'G' || value[last] == 'g') {
- shift_left_factor = 30;
- value[last] = '\0';
- }
-
- return simple_strtoul(cp, endp, base) << shift_left_factor;
-}
-
-STATIC int
-xfs_parseargs(
- struct bhv_desc *bhv,
- char *options,
- struct xfs_mount_args *args,
- int update)
-{
- struct vfs *vfsp = bhvtovfs(bhv);
- char *this_char, *value, *eov;
- int dsunit, dswidth, vol_dsunit, vol_dswidth;
- int iosize;
-
- args->flags |= XFSMNT_COMPAT_IOSIZE;
-#if 0 /* XXX: off by default, until some remaining issues ironed out */
- args->flags |= XFSMNT_IDELETE; /* default to on */
-#endif
-
- if (!options)
- return 0;
-
- iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
-
- while ((this_char = strsep(&options, ",")) != NULL) {
- if (!*this_char)
- continue;
- if ((value = strchr(this_char, '=')) != NULL)
- *value++ = 0;
-
- if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- args->logbufs = simple_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- args->logbufsize = suffix_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- strncpy(args->logname, value, MAXNAMELEN);
- } else if (!strcmp(this_char, MNTOPT_MTPT)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- strncpy(args->mtpt, value, MAXNAMELEN);
- } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- strncpy(args->rtname, value, MAXNAMELEN);
- } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- iosize = simple_strtoul(value, &eov, 10);
- args->flags |= XFSMNT_IOSIZE;
- args->iosizelog = (uint8_t) iosize;
- } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- iosize = suffix_strtoul(value, &eov, 10);
- args->flags |= XFSMNT_IOSIZE;
- args->iosizelog = ffs(iosize) - 1;
- } else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- args->flags |= XFSMNT_IHASHSIZE;
- args->ihashsize = simple_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_GRPID) ||
- !strcmp(this_char, MNTOPT_BSDGROUPS)) {
- vfsp->vfs_flag |= VFS_GRPID;
- } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
- !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
- vfsp->vfs_flag &= ~VFS_GRPID;
- } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
- args->flags |= XFSMNT_WSYNC;
- } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
- args->flags |= XFSMNT_OSYNCISOSYNC;
- } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
- args->flags |= XFSMNT_NORECOVERY;
- } else if (!strcmp(this_char, MNTOPT_INO64)) {
- args->flags |= XFSMNT_INO64;
-#if !XFS_BIG_INUMS
- printk("XFS: %s option not allowed on this system\n",
- this_char);
- return EINVAL;
-#endif
- } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
- args->flags |= XFSMNT_NOALIGN;
- } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
- args->flags |= XFSMNT_SWALLOC;
- } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- dsunit = simple_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
- if (!value || !*value) {
- printk("XFS: %s option requires an argument\n",
- this_char);
- return EINVAL;
- }
- dswidth = simple_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
- args->flags &= ~XFSMNT_32BITINODES;
-#if !XFS_BIG_INUMS
- printk("XFS: %s option not allowed on this system\n",
- this_char);
- return EINVAL;
-#endif
- } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
- args->flags |= XFSMNT_NOUUID;
- } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
- args->flags |= XFSMNT_BARRIER;
- } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
- args->flags &= ~XFSMNT_IDELETE;
- } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
- args->flags |= XFSMNT_IDELETE;
- } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
- args->flags &= ~XFSMNT_COMPAT_IOSIZE;
- } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
- args->flags |= XFSMNT_COMPAT_IOSIZE;
- } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
- args->flags &= ~XFSMNT_COMPAT_ATTR;
- } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
- args->flags |= XFSMNT_COMPAT_ATTR;
- } else if (!strcmp(this_char, "osyncisdsync")) {
- /* no-op, this is now the default */
-printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
- } else if (!strcmp(this_char, "irixsgid")) {
-printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
- } else {
- printk("XFS: unknown mount option [%s].\n", this_char);
- return EINVAL;
- }
- }
-
- if (args->flags & XFSMNT_NORECOVERY) {
- if ((vfsp->vfs_flag & VFS_RDONLY) == 0) {
- printk("XFS: no-recovery mounts must be read-only.\n");
- return EINVAL;
- }
- }
-
- if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
- printk(
- "XFS: sunit and swidth options incompatible with the noalign option\n");
- return EINVAL;
- }
-
- if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
- printk("XFS: sunit and swidth must be specified together\n");
- return EINVAL;
- }
-
- if (dsunit && (dswidth % dsunit != 0)) {
- printk(
- "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
- dswidth, dsunit);
- return EINVAL;
- }
-
- if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
- if (dsunit) {
- args->sunit = dsunit;
- args->flags |= XFSMNT_RETERR;
- } else {
- args->sunit = vol_dsunit;
- }
- dswidth ? (args->swidth = dswidth) :
- (args->swidth = vol_dswidth);
- } else {
- args->sunit = args->swidth = 0;
- }
-
- return 0;
-}
-
-STATIC int
-xfs_showargs(
- struct bhv_desc *bhv,
- struct seq_file *m)
-{
- static struct proc_xfs_info {
- int flag;
- char *str;
- } xfs_info[] = {
- /* the few simple ones we can get from the mount struct */
- { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
- { XFS_MOUNT_INO64, "," MNTOPT_INO64 },
- { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
- { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
- { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
- { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
- { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
- { XFS_MOUNT_BARRIER, "," MNTOPT_BARRIER },
- { XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP },
- { XFS_MOUNT_COMPAT_ATTR, "," MNTOPT_NOATTR2 },
- { 0, NULL }
- };
- struct proc_xfs_info *xfs_infop;
- struct xfs_mount *mp = XFS_BHVTOM(bhv);
- struct vfs *vfsp = XFS_MTOVFS(mp);
-
- for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
- if (mp->m_flags & xfs_infop->flag)
- seq_puts(m, xfs_infop->str);
- }
-
- if (mp->m_flags & XFS_MOUNT_IHASHSIZE)
- seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize);
-
- if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
- seq_printf(m, "," MNTOPT_ALLOCSIZE "=%d", 1<<mp->m_writeio_log);
-
- if (mp->m_logbufs > 0)
- seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
-
- if (mp->m_logbsize > 0)
- seq_printf(m, "," MNTOPT_LOGBSIZE "=%d", mp->m_logbsize);
-
- if (mp->m_logname)
- seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
-
- if (mp->m_rtname)
- seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
-
- if (mp->m_dalign > 0)
- seq_printf(m, "," MNTOPT_SUNIT "=%d",
- (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
-
- if (mp->m_swidth > 0)
- seq_printf(m, "," MNTOPT_SWIDTH "=%d",
- (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
-
- if (!(mp->m_flags & XFS_MOUNT_32BITINOOPT))
- seq_printf(m, "," MNTOPT_64BITINODE);
-
- if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE))
- seq_printf(m, "," MNTOPT_LARGEIO);
-
- if (vfsp->vfs_flag & VFS_GRPID)
- seq_printf(m, "," MNTOPT_GRPID);
-
- return 0;
-}
-
-STATIC void
-xfs_freeze(
- bhv_desc_t *bdp)
-{
- xfs_mount_t *mp = XFS_BHVTOM(bdp);
-
- while (atomic_read(&mp->m_active_trans) > 0)
- delay(100);
-
- /* Push the superblock and write an unmount record */
- xfs_log_unmount_write(mp);
- xfs_unmountfs_writesb(mp);
-}
-
-
-vfsops_t xfs_vfsops = {
- BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS),
- .vfs_parseargs = xfs_parseargs,
- .vfs_showargs = xfs_showargs,
- .vfs_mount = xfs_mount,
- .vfs_unmount = xfs_unmount,
- .vfs_mntupdate = xfs_mntupdate,
- .vfs_root = xfs_root,
- .vfs_statvfs = xfs_statvfs,
- .vfs_sync = xfs_sync,
- .vfs_vget = xfs_vget,
- .vfs_dmapiops = (vfs_dmapiops_t)fs_nosys,
- .vfs_quotactl = (vfs_quotactl_t)fs_nosys,
- .vfs_init_vnode = xfs_initialize_vnode,
- .vfs_force_shutdown = xfs_do_force_shutdown,
- .vfs_freeze = xfs_freeze,
-};