#include "xfs_error.h"
#include "xfs_bmap.h"
#include "xfs_rw.h"
-#include "xfs_refcache.h"
#include "xfs_buf_item.h"
#include "xfs_log_priv.h"
#include "xfs_dir2_trace.h"
#include "xfs_extfree_item.h"
#include "xfs_acl.h"
#include "xfs_attr.h"
-#include "xfs_clnt.h"
#include "xfs_mru_cache.h"
#include "xfs_filestream.h"
#include "xfs_fsops.h"
#include "xfs_vnodeops.h"
-#include "xfs_vfsops.h"
+#include "xfs_utils.h"
+#include "xfs_sync.h"
-int
-xfs_init(void)
-{
- extern kmem_zone_t *xfs_bmap_free_item_zone;
- extern kmem_zone_t *xfs_btree_cur_zone;
- extern kmem_zone_t *xfs_trans_zone;
- extern kmem_zone_t *xfs_buf_item_zone;
- extern kmem_zone_t *xfs_dabuf_zone;
-#ifdef XFS_DABUF_DEBUG
- extern spinlock_t xfs_dabuf_global_lock;
- spinlock_init(&xfs_dabuf_global_lock, "xfsda");
-#endif
-
- /*
- * Initialize all of the zone allocators we use.
- */
- xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
- "xfs_bmap_free_item");
- xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
- "xfs_btree_cur");
- xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
- xfs_da_state_zone =
- kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state");
- xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
- xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
- xfs_acl_zone_init(xfs_acl_zone, "xfs_acl");
- xfs_mru_cache_init();
- xfs_filestream_init();
-
- /*
- * The size of the zone allocated buf log item is the maximum
- * size possible under XFS. This wastes a little bit of memory,
- * but it is much faster.
- */
- xfs_buf_item_zone =
- kmem_zone_init((sizeof(xfs_buf_log_item_t) +
- (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
- NBWORD) * sizeof(int))),
- "xfs_buf_item");
- xfs_efd_zone =
- kmem_zone_init((sizeof(xfs_efd_log_item_t) +
- ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
- sizeof(xfs_extent_t))),
- "xfs_efd_item");
- xfs_efi_zone =
- kmem_zone_init((sizeof(xfs_efi_log_item_t) +
- ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
- sizeof(xfs_extent_t))),
- "xfs_efi_item");
-
- /*
- * These zones warrant special memory allocator hints
- */
- xfs_inode_zone =
- kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
- KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
- KM_ZONE_SPREAD, NULL);
- xfs_ili_zone =
- kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
- KM_ZONE_SPREAD, NULL);
- xfs_icluster_zone =
- kmem_zone_init_flags(sizeof(xfs_icluster_t), "xfs_icluster",
- KM_ZONE_SPREAD, NULL);
-
- /*
- * Allocate global trace buffers.
- */
-#ifdef XFS_ALLOC_TRACE
- xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_BMAP_TRACE
- xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_BMBT_TRACE
- xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_ATTR_TRACE
- xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_DIR2_TRACE
- xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP);
-#endif
-
- xfs_dir_startup();
-
-#if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
- xfs_error_test_init();
-#endif /* DEBUG || INDUCE_IO_ERROR */
-
- xfs_init_procfs();
- xfs_sysctl_register();
- return 0;
-}
-
-void
-xfs_cleanup(void)
-{
- extern kmem_zone_t *xfs_bmap_free_item_zone;
- extern kmem_zone_t *xfs_btree_cur_zone;
- extern kmem_zone_t *xfs_inode_zone;
- extern kmem_zone_t *xfs_trans_zone;
- extern kmem_zone_t *xfs_da_state_zone;
- extern kmem_zone_t *xfs_dabuf_zone;
- extern kmem_zone_t *xfs_efd_zone;
- extern kmem_zone_t *xfs_efi_zone;
- extern kmem_zone_t *xfs_buf_item_zone;
- extern kmem_zone_t *xfs_icluster_zone;
-
- xfs_cleanup_procfs();
- xfs_sysctl_unregister();
- xfs_refcache_destroy();
- xfs_filestream_uninit();
- xfs_mru_cache_uninit();
- xfs_acl_zone_destroy(xfs_acl_zone);
-
-#ifdef XFS_DIR2_TRACE
- ktrace_free(xfs_dir2_trace_buf);
-#endif
-#ifdef XFS_ATTR_TRACE
- ktrace_free(xfs_attr_trace_buf);
-#endif
-#ifdef XFS_BMBT_TRACE
- ktrace_free(xfs_bmbt_trace_buf);
-#endif
-#ifdef XFS_BMAP_TRACE
- ktrace_free(xfs_bmap_trace_buf);
-#endif
-#ifdef XFS_ALLOC_TRACE
- ktrace_free(xfs_alloc_trace_buf);
-#endif
-
- kmem_zone_destroy(xfs_bmap_free_item_zone);
- kmem_zone_destroy(xfs_btree_cur_zone);
- kmem_zone_destroy(xfs_inode_zone);
- kmem_zone_destroy(xfs_trans_zone);
- kmem_zone_destroy(xfs_da_state_zone);
- kmem_zone_destroy(xfs_dabuf_zone);
- kmem_zone_destroy(xfs_buf_item_zone);
- kmem_zone_destroy(xfs_efd_zone);
- kmem_zone_destroy(xfs_efi_zone);
- kmem_zone_destroy(xfs_ifork_zone);
- kmem_zone_destroy(xfs_ili_zone);
- kmem_zone_destroy(xfs_icluster_zone);
-}
-
-/*
- * xfs_start_flags
- *
- * This function fills in xfs_mount_t fields based on mount args.
- * Note: the superblock has _not_ yet been read in.
- */
-STATIC int
-xfs_start_flags(
- struct xfs_mount_args *ap,
- struct xfs_mount *mp)
-{
- /* Values are in BBs */
- if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
- /*
- * At this point the superblock has not been read
- * in, therefore we do not know the block size.
- * Before the mount call ends we will convert
- * these to FSBs.
- */
- mp->m_dalign = ap->sunit;
- mp->m_swidth = ap->swidth;
- }
-
- if (ap->logbufs != -1 &&
- ap->logbufs != 0 &&
- (ap->logbufs < XLOG_MIN_ICLOGS ||
- ap->logbufs > XLOG_MAX_ICLOGS)) {
- cmn_err(CE_WARN,
- "XFS: invalid logbufs value: %d [not %d-%d]",
- ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
- return XFS_ERROR(EINVAL);
- }
- mp->m_logbufs = ap->logbufs;
- if (ap->logbufsize != -1 &&
- ap->logbufsize != 0 &&
- (ap->logbufsize < XLOG_MIN_RECORD_BSIZE ||
- ap->logbufsize > XLOG_MAX_RECORD_BSIZE ||
- !is_power_of_2(ap->logbufsize))) {
- cmn_err(CE_WARN,
- "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
- ap->logbufsize);
- return XFS_ERROR(EINVAL);
- }
- mp->m_logbsize = ap->logbufsize;
- mp->m_fsname_len = strlen(ap->fsname) + 1;
- mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
- strcpy(mp->m_fsname, ap->fsname);
- if (ap->rtname[0]) {
- mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP);
- strcpy(mp->m_rtname, ap->rtname);
- }
- if (ap->logname[0]) {
- mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP);
- strcpy(mp->m_logname, ap->logname);
- }
-
- if (ap->flags & XFSMNT_WSYNC)
- mp->m_flags |= XFS_MOUNT_WSYNC;
-#if XFS_BIG_INUMS
- if (ap->flags & XFSMNT_INO64) {
- mp->m_flags |= XFS_MOUNT_INO64;
- mp->m_inoadd = XFS_INO64_OFFSET;
- }
-#endif
- if (ap->flags & XFSMNT_RETERR)
- mp->m_flags |= XFS_MOUNT_RETERR;
- if (ap->flags & XFSMNT_NOALIGN)
- mp->m_flags |= XFS_MOUNT_NOALIGN;
- if (ap->flags & XFSMNT_SWALLOC)
- mp->m_flags |= XFS_MOUNT_SWALLOC;
- if (ap->flags & XFSMNT_OSYNCISOSYNC)
- mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
- if (ap->flags & XFSMNT_32BITINODES)
- mp->m_flags |= XFS_MOUNT_32BITINODES;
-
- if (ap->flags & XFSMNT_IOSIZE) {
- if (ap->iosizelog > XFS_MAX_IO_LOG ||
- ap->iosizelog < XFS_MIN_IO_LOG) {
- cmn_err(CE_WARN,
- "XFS: invalid log iosize: %d [not %d-%d]",
- ap->iosizelog, XFS_MIN_IO_LOG,
- XFS_MAX_IO_LOG);
- return XFS_ERROR(EINVAL);
- }
-
- mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
- mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
- }
-
- if (ap->flags & XFSMNT_IDELETE)
- mp->m_flags |= XFS_MOUNT_IDELETE;
- if (ap->flags & XFSMNT_DIRSYNC)
- mp->m_flags |= XFS_MOUNT_DIRSYNC;
- if (ap->flags & XFSMNT_ATTR2)
- mp->m_flags |= XFS_MOUNT_ATTR2;
-
- if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
- mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
-
- /*
- * no recovery flag requires a read-only mount
- */
- if (ap->flags & XFSMNT_NORECOVERY) {
- if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
- cmn_err(CE_WARN,
- "XFS: tried to mount a FS read-write without recovery!");
- return XFS_ERROR(EINVAL);
- }
- mp->m_flags |= XFS_MOUNT_NORECOVERY;
- }
-
- if (ap->flags & XFSMNT_NOUUID)
- mp->m_flags |= XFS_MOUNT_NOUUID;
- if (ap->flags & XFSMNT_BARRIER)
- mp->m_flags |= XFS_MOUNT_BARRIER;
- else
- mp->m_flags &= ~XFS_MOUNT_BARRIER;
-
- if (ap->flags2 & XFSMNT2_FILESTREAMS)
- mp->m_flags |= XFS_MOUNT_FILESTREAMS;
-
- if (ap->flags & XFSMNT_DMAPI)
- mp->m_flags |= XFS_MOUNT_DMAPI;
- return 0;
-}
-
-/*
- * This function fills in xfs_mount_t fields based on mount args.
- * Note: the superblock _has_ now been read in.
- */
-STATIC int
-xfs_finish_flags(
- struct xfs_mount_args *ap,
- struct xfs_mount *mp)
-{
- int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
-
- /* Fail a mount where the logbuf is smaller then the log stripe */
- if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) {
- if ((ap->logbufsize <= 0) &&
- (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) {
- mp->m_logbsize = mp->m_sb.sb_logsunit;
- } else if (ap->logbufsize > 0 &&
- ap->logbufsize < mp->m_sb.sb_logsunit) {
- cmn_err(CE_WARN,
- "XFS: logbuf size must be greater than or equal to log stripe size");
- return XFS_ERROR(EINVAL);
- }
- } else {
- /* Fail a mount if the logbuf is larger than 32K */
- if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
- cmn_err(CE_WARN,
- "XFS: logbuf size for version 1 logs must be 16K or 32K");
- return XFS_ERROR(EINVAL);
- }
- }
-
- if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
- mp->m_flags |= XFS_MOUNT_ATTR2;
- }
-
- /*
- * prohibit r/w mounts of read-only filesystems
- */
- if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
- cmn_err(CE_WARN,
- "XFS: cannot mount a read-only filesystem as read-write");
- return XFS_ERROR(EROFS);
- }
-
- /*
- * check for shared mount.
- */
- if (ap->flags & XFSMNT_SHARED) {
- if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb))
- return XFS_ERROR(EINVAL);
-
- /*
- * For IRIX 6.5, shared mounts must have the shared
- * version bit set, have the persistent readonly
- * field set, must be version 0 and can only be mounted
- * read-only.
- */
- if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
- (mp->m_sb.sb_shared_vn != 0))
- return XFS_ERROR(EINVAL);
-
- mp->m_flags |= XFS_MOUNT_SHARED;
-
- /*
- * Shared XFS V0 can't deal with DMI. Return EINVAL.
- */
- if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
- return XFS_ERROR(EINVAL);
- }
-
- if (ap->flags & XFSMNT_UQUOTA) {
- mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
- if (ap->flags & XFSMNT_UQUOTAENF)
- mp->m_qflags |= XFS_UQUOTA_ENFD;
- }
-
- if (ap->flags & XFSMNT_GQUOTA) {
- mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
- if (ap->flags & XFSMNT_GQUOTAENF)
- mp->m_qflags |= XFS_OQUOTA_ENFD;
- } else if (ap->flags & XFSMNT_PQUOTA) {
- mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
- if (ap->flags & XFSMNT_PQUOTAENF)
- mp->m_qflags |= XFS_OQUOTA_ENFD;
- }
-
- return 0;
-}
-
-/*
- * xfs_mount
- *
- * The file system configurations are:
- * (1) device (partition) with data and internal log
- * (2) logical volume with data and log subvolumes.
- * (3) logical volume with data, log, and realtime subvolumes.
- *
- * We only have to handle opening the log and realtime volumes here if
- * they are present. The data subvolume has already been opened by
- * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
- */
-int
-xfs_mount(
- struct xfs_mount *mp,
- struct xfs_mount_args *args,
- cred_t *credp)
-{
- struct block_device *ddev, *logdev, *rtdev;
- int flags = 0, error;
-
- ddev = mp->m_super->s_bdev;
- logdev = rtdev = NULL;
-
- error = xfs_dmops_get(mp, args);
- if (error)
- return error;
- error = xfs_qmops_get(mp, args);
- if (error)
- return error;
-
- if (args->flags & XFSMNT_QUIET)
- flags |= XFS_MFSI_QUIET;
-
- /*
- * Open real time and log devices - order is important.
- */
- if (args->logname[0]) {
- error = xfs_blkdev_get(mp, args->logname, &logdev);
- if (error)
- return error;
- }
- if (args->rtname[0]) {
- error = xfs_blkdev_get(mp, args->rtname, &rtdev);
- if (error) {
- xfs_blkdev_put(logdev);
- return error;
- }
-
- if (rtdev == ddev || rtdev == logdev) {
- cmn_err(CE_WARN,
- "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
- xfs_blkdev_put(logdev);
- xfs_blkdev_put(rtdev);
- return EINVAL;
- }
- }
-
- /*
- * Setup xfs_mount buffer target pointers
- */
- error = ENOMEM;
- mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0);
- if (!mp->m_ddev_targp) {
- xfs_blkdev_put(logdev);
- xfs_blkdev_put(rtdev);
- return error;
- }
- if (rtdev) {
- mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1);
- if (!mp->m_rtdev_targp) {
- xfs_blkdev_put(logdev);
- xfs_blkdev_put(rtdev);
- goto error0;
- }
- }
- mp->m_logdev_targp = (logdev && logdev != ddev) ?
- xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp;
- if (!mp->m_logdev_targp) {
- xfs_blkdev_put(logdev);
- xfs_blkdev_put(rtdev);
- goto error0;
- }
-
- /*
- * Setup flags based on mount(2) options and then the superblock
- */
- error = xfs_start_flags(args, mp);
- if (error)
- goto error1;
- error = xfs_readsb(mp, flags);
- if (error)
- goto error1;
- error = xfs_finish_flags(args, mp);
- if (error)
- goto error2;
-
- /*
- * Setup xfs_mount buffer target pointers based on superblock
- */
- error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
- mp->m_sb.sb_sectsize);
- if (!error && logdev && logdev != ddev) {
- unsigned int log_sector_size = BBSIZE;
-
- if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb))
- log_sector_size = mp->m_sb.sb_logsectsize;
- error = xfs_setsize_buftarg(mp->m_logdev_targp,
- mp->m_sb.sb_blocksize,
- log_sector_size);
- }
- if (!error && rtdev)
- error = xfs_setsize_buftarg(mp->m_rtdev_targp,
- mp->m_sb.sb_blocksize,
- mp->m_sb.sb_sectsize);
- if (error)
- goto error2;
-
- if (mp->m_flags & XFS_MOUNT_BARRIER)
- xfs_mountfs_check_barriers(mp);
-
- if ((error = xfs_filestream_mount(mp)))
- goto error2;
-
- error = xfs_mountfs(mp, flags);
- if (error)
- goto error2;
-
- XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, args->mtpt, args->fsname);
-
- return 0;
-
-error2:
- if (mp->m_sb_bp)
- xfs_freesb(mp);
-error1:
- xfs_binval(mp->m_ddev_targp);
- if (logdev && logdev != ddev)
- xfs_binval(mp->m_logdev_targp);
- if (rtdev)
- xfs_binval(mp->m_rtdev_targp);
-error0:
- xfs_unmountfs_close(mp, credp);
- xfs_qmops_put(mp);
- xfs_dmops_put(mp);
- return error;
-}
-
-int
-xfs_unmount(
- xfs_mount_t *mp,
- int flags,
- cred_t *credp)
-{
- xfs_inode_t *rip;
- bhv_vnode_t *rvp;
- int unmount_event_wanted = 0;
- int unmount_event_flags = 0;
- int xfs_unmountfs_needed = 0;
- int error;
-
- rip = mp->m_rootip;
- rvp = XFS_ITOV(rip);
-
-#ifdef HAVE_DMAPI
- if (mp->m_flags & XFS_MOUNT_DMAPI) {
- error = XFS_SEND_PREUNMOUNT(mp,
- rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
- NULL, NULL, 0, 0,
- (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
- 0:DM_FLAGS_UNWANTED);
- if (error)
- return XFS_ERROR(error);
- unmount_event_wanted = 1;
- unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
- 0 : DM_FLAGS_UNWANTED;
- }
-#endif
- /*
- * First blow any referenced inode from this file system
- * out of the reference cache, and delete the timer.
- */
- xfs_refcache_purge_mp(mp);
-
- /*
- * Blow away any referenced inode in the filestreams cache.
- * This can and will cause log traffic as inodes go inactive
- * here.
- */
- xfs_filestream_unmount(mp);
-
- XFS_bflush(mp->m_ddev_targp);
- error = xfs_unmount_flush(mp, 0);
- if (error)
- goto out;
-
- ASSERT(vn_count(rvp) == 1);
-
- /*
- * Drop the reference count
- */
- VN_RELE(rvp);
-
- /*
- * If we're forcing a shutdown, typically because of a media error,
- * we want to make sure we invalidate dirty pages that belong to
- * referenced vnodes as well.
- */
- if (XFS_FORCED_SHUTDOWN(mp)) {
- error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE);
- ASSERT(error != EFSCORRUPTED);
- }
- xfs_unmountfs_needed = 1;
-
-out:
- /* Send DMAPI event, if required.
- * Then do xfs_unmountfs() if needed.
- * Then return error (or zero).
- */
- if (unmount_event_wanted) {
- /* Note: mp structure must still exist for
- * XFS_SEND_UNMOUNT() call.
- */
- XFS_SEND_UNMOUNT(mp, error == 0 ? rvp : NULL,
- DM_RIGHT_NULL, 0, error, unmount_event_flags);
- }
- if (xfs_unmountfs_needed) {
- /*
- * Call common unmount function to flush to disk
- * and free the super block buffer & mount structures.
- */
- xfs_unmountfs(mp, credp);
- xfs_qmops_put(mp);
- xfs_dmops_put(mp);
- kmem_free(mp, sizeof(xfs_mount_t));
- }
-
- return XFS_ERROR(error);
-}
-
-STATIC int
-xfs_quiesce_fs(
- xfs_mount_t *mp)
-{
- int count = 0, pincount;
-
- xfs_refcache_purge_mp(mp);
- xfs_flush_buftarg(mp->m_ddev_targp, 0);
- xfs_finish_reclaim_all(mp, 0);
-
- /* This loop must run at least twice.
- * The first instance of the loop will flush
- * most meta data but that will generate more
- * meta data (typically directory updates).
- * Which then must be flushed and logged before
- * we can write the unmount record.
- */
- do {
- xfs_syncsub(mp, SYNC_INODE_QUIESCE, NULL);
- pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
- if (!pincount) {
- delay(50);
- count++;
- }
- } while (count < 2);
-
- return 0;
-}
-
-/*
- * Second stage of a quiesce. The data is already synced, now we have to take
- * care of the metadata. New transactions are already blocked, so we need to
- * wait for any remaining transactions to drain out before proceding.
- */
-STATIC void
-xfs_attr_quiesce(
- xfs_mount_t *mp)
-{
- /* wait for all modifications to complete */
- while (atomic_read(&mp->m_active_trans) > 0)
- delay(100);
-
- /* flush inodes and push all remaining buffers out to disk */
- xfs_quiesce_fs(mp);
-
- ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
-
- /* Push the superblock and write an unmount record */
- xfs_log_sbcount(mp, 1);
- xfs_log_unmount_write(mp);
- xfs_unmountfs_writesb(mp);
-}
-
-int
-xfs_mntupdate(
- struct xfs_mount *mp,
- int *flags,
- struct xfs_mount_args *args)
-{
- if (!(*flags & MS_RDONLY)) { /* rw/ro -> rw */
- if (mp->m_flags & XFS_MOUNT_RDONLY)
- mp->m_flags &= ~XFS_MOUNT_RDONLY;
- if (args->flags & XFSMNT_BARRIER) {
- mp->m_flags |= XFS_MOUNT_BARRIER;
- xfs_mountfs_check_barriers(mp);
- } else {
- mp->m_flags &= ~XFS_MOUNT_BARRIER;
- }
- } else if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { /* rw -> ro */
- xfs_filestream_flush(mp);
- xfs_sync(mp, SYNC_DATA_QUIESCE);
- xfs_attr_quiesce(mp);
- mp->m_flags |= XFS_MOUNT_RDONLY;
- }
- return 0;
-}
-
/*
* xfs_unmount_flush implements a set of flush operation on special
* inodes, which are needed as a separate set of operations so that
xfs_inode_t *rip = mp->m_rootip;
xfs_inode_t *rbmip;
xfs_inode_t *rsumip = NULL;
- bhv_vnode_t *rvp = XFS_ITOV(rip);
int error;
xfs_ilock(rip, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
if (error == EFSCORRUPTED)
goto fscorrupt_out;
- ASSERT(vn_count(XFS_ITOV(rbmip)) == 1);
+ ASSERT(vn_count(VFS_I(rbmip)) == 1);
rsumip = mp->m_rsumip;
xfs_ilock(rsumip, XFS_ILOCK_EXCL);
if (error == EFSCORRUPTED)
goto fscorrupt_out;
- ASSERT(vn_count(XFS_ITOV(rsumip)) == 1);
+ ASSERT(vn_count(VFS_I(rsumip)) == 1);
}
/*
if (error == EFSCORRUPTED)
goto fscorrupt_out2;
- if (vn_count(rvp) != 1 && !relocation) {
+ if (vn_count(VFS_I(rip)) != 1 && !relocation) {
xfs_iunlock(rip, XFS_ILOCK_EXCL);
return XFS_ERROR(EBUSY);
}
goto fscorrupt_out2;
if (rbmip) {
- VN_RELE(XFS_ITOV(rbmip));
- VN_RELE(XFS_ITOV(rsumip));
+ IRELE(rbmip);
+ IRELE(rsumip);
}
xfs_iunlock(rip, XFS_ILOCK_EXCL);
return XFS_ERROR(EFSCORRUPTED);
}
-/*
- * xfs_root extracts the root vnode from a vfs.
- *
- * vfsp -- the vfs struct for the desired file system
- * vpp -- address of the caller's vnode pointer which should be
- * set to the desired fs root vnode
- */
-int
-xfs_root(
- xfs_mount_t *mp,
- bhv_vnode_t **vpp)
-{
- bhv_vnode_t *vp;
-
- vp = XFS_ITOV(mp->m_rootip);
- VN_HOLD(vp);
- *vpp = vp;
- return 0;
-}
-
-/*
- * xfs_statvfs
- *
- * Fill in the statvfs structure for the given file system. We use
- * the superblock lock in the mount structure to ensure a consistent
- * snapshot of the counters returned.
- */
-int
-xfs_statvfs(
- xfs_mount_t *mp,
- bhv_statvfs_t *statp,
- bhv_vnode_t *vp)
-{
- __uint64_t fakeinos;
- xfs_extlen_t lsize;
- xfs_sb_t *sbp;
- unsigned long s;
-
- sbp = &(mp->m_sb);
-
- statp->f_type = XFS_SB_MAGIC;
-
- xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT);
- s = XFS_SB_LOCK(mp);
- statp->f_bsize = sbp->sb_blocksize;
- lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
- statp->f_blocks = sbp->sb_dblocks - lsize;
- statp->f_bfree = statp->f_bavail =
- sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
- fakeinos = statp->f_bfree << sbp->sb_inopblog;
-#if XFS_BIG_INUMS
- fakeinos += mp->m_inoadd;
-#endif
- statp->f_files =
- MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
- if (mp->m_maxicount)
-#if XFS_BIG_INUMS
- if (!mp->m_inoadd)
-#endif
- statp->f_files = min_t(typeof(statp->f_files),
- statp->f_files,
- mp->m_maxicount);
- statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
- XFS_SB_UNLOCK(mp, s);
-
- xfs_statvfs_fsid(statp, mp);
- statp->f_namelen = MAXNAMELEN - 1;
-
- if (vp)
- XFS_QM_DQSTATVFS(xfs_vtoi(vp), statp);
- return 0;
-}
-
-
-/*
- * xfs_sync flushes any pending I/O to file system vfsp.
- *
- * This routine is called by vfs_sync() to make sure that things make it
- * out to disk eventually, on sync() system calls to flush out everything,
- * and when the file system is unmounted. For the vfs_sync() case, all
- * we really need to do is sync out the log to make all of our meta-data
- * updates permanent (except for timestamps). For calls from pflushd(),
- * dirty pages are kept moving by calling pdflush() on the inodes
- * containing them. We also flush the inodes that we can lock without
- * sleeping and the superblock if we can lock it without sleeping from
- * vfs_sync() so that items at the tail of the log are always moving out.
- *
- * Flags:
- * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
- * to sleep if we can help it. All we really need
- * to do is ensure that the log is synced at least
- * periodically. We also push the inodes and
- * superblock if we can lock them without sleeping
- * and they are not pinned.
- * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
- * set, then we really want to lock each inode and flush
- * it.
- * SYNC_WAIT - All the flushes that take place in this call should
- * be synchronous.
- * SYNC_DELWRI - This tells us to push dirty pages associated with
- * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
- * determine if they should be flushed sync, async, or
- * delwri.
- * SYNC_CLOSE - This flag is passed when the system is being
- * unmounted. We should sync and invalidate everything.
- * SYNC_FSDATA - This indicates that the caller would like to make
- * sure the superblock is safe on disk. We can ensure
- * this by simply making sure the log gets flushed
- * if SYNC_BDFLUSH is set, and by actually writing it
- * out otherwise.
- * SYNC_IOWAIT - The caller wants us to wait for all data I/O to complete
- * before we return (including direct I/O). Forms the drain
- * side of the write barrier needed to safely quiesce the
- * filesystem.
- *
- */
-int
-xfs_sync(
- xfs_mount_t *mp,
- int flags)
-{
- int error;
-
- /*
- * Get the Quota Manager to flush the dquots.
- *
- * If XFS quota support is not enabled or this filesystem
- * instance does not use quotas XFS_QM_DQSYNC will always
- * return zero.
- */
- error = XFS_QM_DQSYNC(mp, flags);
- if (error) {
- /*
- * If we got an IO error, we will be shutting down.
- * So, there's nothing more for us to do here.
- */
- ASSERT(error != EIO || XFS_FORCED_SHUTDOWN(mp));
- if (XFS_FORCED_SHUTDOWN(mp))
- return XFS_ERROR(error);
- }
-
- if (flags & SYNC_IOWAIT)
- xfs_filestream_flush(mp);
-
- return xfs_syncsub(mp, flags, NULL);
-}
-
-/*
- * xfs sync routine for internal use
- *
- * This routine supports all of the flags defined for the generic vfs_sync
- * interface as explained above under xfs_sync.
- *
- */
-int
-xfs_sync_inodes(
- xfs_mount_t *mp,
- int flags,
- int *bypassed)
-{
- xfs_inode_t *ip = NULL;
- bhv_vnode_t *vp = NULL;
- int error;
- int last_error;
- uint64_t fflag;
- uint lock_flags;
- uint base_lock_flags;
- boolean_t mount_locked;
- boolean_t vnode_refed;
- int preempt;
- xfs_iptr_t *ipointer;
-#ifdef DEBUG
- boolean_t ipointer_in = B_FALSE;
-
-#define IPOINTER_SET ipointer_in = B_TRUE
-#define IPOINTER_CLR ipointer_in = B_FALSE
-#else
-#define IPOINTER_SET
-#define IPOINTER_CLR
-#endif
-
-
-/* Insert a marker record into the inode list after inode ip. The list
- * must be locked when this is called. After the call the list will no
- * longer be locked.
- */
-#define IPOINTER_INSERT(ip, mp) { \
- ASSERT(ipointer_in == B_FALSE); \
- ipointer->ip_mnext = ip->i_mnext; \
- ipointer->ip_mprev = ip; \
- ip->i_mnext = (xfs_inode_t *)ipointer; \
- ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
- preempt = 0; \
- XFS_MOUNT_IUNLOCK(mp); \
- mount_locked = B_FALSE; \
- IPOINTER_SET; \
- }
-
-/* Remove the marker from the inode list. If the marker was the only item
- * in the list then there are no remaining inodes and we should zero out
- * the whole list. If we are the current head of the list then move the head
- * past us.
- */
-#define IPOINTER_REMOVE(ip, mp) { \
- ASSERT(ipointer_in == B_TRUE); \
- if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
- ip = ipointer->ip_mnext; \
- ip->i_mprev = ipointer->ip_mprev; \
- ipointer->ip_mprev->i_mnext = ip; \
- if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
- mp->m_inodes = ip; \
- } \
- } else { \
- ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
- mp->m_inodes = NULL; \
- ip = NULL; \
- } \
- IPOINTER_CLR; \
- }
-
-#define XFS_PREEMPT_MASK 0x7f
-
- ASSERT(!(flags & SYNC_BDFLUSH));
-
- if (bypassed)
- *bypassed = 0;
- if (mp->m_flags & XFS_MOUNT_RDONLY)
- return 0;
- error = 0;
- last_error = 0;
- preempt = 0;
-
- /* Allocate a reference marker */
- ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
-
- fflag = XFS_B_ASYNC; /* default is don't wait */
- if (flags & SYNC_DELWRI)
- fflag = XFS_B_DELWRI;
- if (flags & SYNC_WAIT)
- fflag = 0; /* synchronous overrides all */
-
- base_lock_flags = XFS_ILOCK_SHARED;
- if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
- /*
- * We need the I/O lock if we're going to call any of
- * the flush/inval routines.
- */
- base_lock_flags |= XFS_IOLOCK_SHARED;
- }
-
- XFS_MOUNT_ILOCK(mp);
-
- ip = mp->m_inodes;
-
- mount_locked = B_TRUE;
- vnode_refed = B_FALSE;
-
- IPOINTER_CLR;
-
- do {
- ASSERT(ipointer_in == B_FALSE);
- ASSERT(vnode_refed == B_FALSE);
-
- lock_flags = base_lock_flags;
-
- /*
- * There were no inodes in the list, just break out
- * of the loop.
- */
- if (ip == NULL) {
- break;
- }
-
- /*
- * We found another sync thread marker - skip it
- */
- if (ip->i_mount == NULL) {
- ip = ip->i_mnext;
- continue;
- }
-
- vp = XFS_ITOV_NULL(ip);
-
- /*
- * If the vnode is gone then this is being torn down,
- * call reclaim if it is flushed, else let regular flush
- * code deal with it later in the loop.
- */
-
- if (vp == NULL) {
- /* Skip ones already in reclaim */
- if (ip->i_flags & XFS_IRECLAIM) {
- ip = ip->i_mnext;
- continue;
- }
- if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
- ip = ip->i_mnext;
- } else if ((xfs_ipincount(ip) == 0) &&
- xfs_iflock_nowait(ip)) {
- IPOINTER_INSERT(ip, mp);
-
- xfs_finish_reclaim(ip, 1,
- XFS_IFLUSH_DELWRI_ELSE_ASYNC);
-
- XFS_MOUNT_ILOCK(mp);
- mount_locked = B_TRUE;
- IPOINTER_REMOVE(ip, mp);
- } else {
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
- ip = ip->i_mnext;
- }
- continue;
- }
-
- if (VN_BAD(vp)) {
- ip = ip->i_mnext;
- continue;
- }
-
- if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
- XFS_MOUNT_IUNLOCK(mp);
- kmem_free(ipointer, sizeof(xfs_iptr_t));
- return 0;
- }
-
- /*
- * Try to lock without sleeping. We're out of order with
- * the inode list lock here, so if we fail we need to drop
- * the mount lock and try again. If we're called from
- * bdflush() here, then don't bother.
- *
- * The inode lock here actually coordinates with the
- * almost spurious inode lock in xfs_ireclaim() to prevent
- * the vnode we handle here without a reference from
- * being freed while we reference it. If we lock the inode
- * while it's on the mount list here, then the spurious inode
- * lock in xfs_ireclaim() after the inode is pulled from
- * the mount list will sleep until we release it here.
- * This keeps the vnode from being freed while we reference
- * it.
- */
- if (xfs_ilock_nowait(ip, lock_flags) == 0) {
- if (vp == NULL) {
- ip = ip->i_mnext;
- continue;
- }
-
- vp = vn_grab(vp);
- if (vp == NULL) {
- ip = ip->i_mnext;
- continue;
- }
-
- IPOINTER_INSERT(ip, mp);
- xfs_ilock(ip, lock_flags);
-
- ASSERT(vp == XFS_ITOV(ip));
- ASSERT(ip->i_mount == mp);
-
- vnode_refed = B_TRUE;
- }
-
- /* From here on in the loop we may have a marker record
- * in the inode list.
- */
-
- /*
- * If we have to flush data or wait for I/O completion
- * we need to drop the ilock that we currently hold.
- * If we need to drop the lock, insert a marker if we
- * have not already done so.
- */
- if ((flags & (SYNC_CLOSE|SYNC_IOWAIT)) ||
- ((flags & SYNC_DELWRI) && VN_DIRTY(vp))) {
- if (mount_locked) {
- IPOINTER_INSERT(ip, mp);
- }
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
-
- if (flags & SYNC_CLOSE) {
- /* Shutdown case. Flush and invalidate. */
- if (XFS_FORCED_SHUTDOWN(mp))
- xfs_tosspages(ip, 0, -1,
- FI_REMAPF);
- else
- error = xfs_flushinval_pages(ip,
- 0, -1, FI_REMAPF);
- } else if ((flags & SYNC_DELWRI) && VN_DIRTY(vp)) {
- error = xfs_flush_pages(ip, 0,
- -1, fflag, FI_NONE);
- }
-
- /*
- * When freezing, we need to wait ensure all I/O (including direct
- * I/O) is complete to ensure no further data modification can take
- * place after this point
- */
- if (flags & SYNC_IOWAIT)
- vn_iowait(ip);
-
- xfs_ilock(ip, XFS_ILOCK_SHARED);
- }
-
- if ((flags & SYNC_ATTR) &&
- (ip->i_update_core ||
- (ip->i_itemp && ip->i_itemp->ili_format.ilf_fields))) {
- if (mount_locked)
- IPOINTER_INSERT(ip, mp);
-
- if (flags & SYNC_WAIT) {
- xfs_iflock(ip);
- error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
-
- /*
- * If we can't acquire the flush lock, then the inode
- * is already being flushed so don't bother waiting.
- *
- * If we can lock it then do a delwri flush so we can
- * combine multiple inode flushes in each disk write.
- */
- } else if (xfs_iflock_nowait(ip)) {
- error = xfs_iflush(ip, XFS_IFLUSH_DELWRI);
- } else if (bypassed) {
- (*bypassed)++;
- }
- }
-
- if (lock_flags != 0) {
- xfs_iunlock(ip, lock_flags);
- }
-
- if (vnode_refed) {
- /*
- * If we had to take a reference on the vnode
- * above, then wait until after we've unlocked
- * the inode to release the reference. This is
- * because we can be already holding the inode
- * lock when VN_RELE() calls xfs_inactive().
- *
- * Make sure to drop the mount lock before calling
- * VN_RELE() so that we don't trip over ourselves if
- * we have to go for the mount lock again in the
- * inactive code.
- */
- if (mount_locked) {
- IPOINTER_INSERT(ip, mp);
- }
-
- VN_RELE(vp);
-
- vnode_refed = B_FALSE;
- }
-
- if (error) {
- last_error = error;
- }
-
- /*
- * bail out if the filesystem is corrupted.
- */
- if (error == EFSCORRUPTED) {
- if (!mount_locked) {
- XFS_MOUNT_ILOCK(mp);
- IPOINTER_REMOVE(ip, mp);
- }
- XFS_MOUNT_IUNLOCK(mp);
- ASSERT(ipointer_in == B_FALSE);
- kmem_free(ipointer, sizeof(xfs_iptr_t));
- return XFS_ERROR(error);
- }
-
- /* Let other threads have a chance at the mount lock
- * if we have looped many times without dropping the
- * lock.
- */
- if ((++preempt & XFS_PREEMPT_MASK) == 0) {
- if (mount_locked) {
- IPOINTER_INSERT(ip, mp);
- }
- }
-
- if (mount_locked == B_FALSE) {
- XFS_MOUNT_ILOCK(mp);
- mount_locked = B_TRUE;
- IPOINTER_REMOVE(ip, mp);
- continue;
- }
-
- ASSERT(ipointer_in == B_FALSE);
- ip = ip->i_mnext;
-
- } while (ip != mp->m_inodes);
-
- XFS_MOUNT_IUNLOCK(mp);
-
- ASSERT(ipointer_in == B_FALSE);
-
- kmem_free(ipointer, sizeof(xfs_iptr_t));
- return XFS_ERROR(last_error);
-}
-
-/*
- * xfs sync routine for internal use
- *
- * This routine supports all of the flags defined for the generic vfs_sync
- * interface as explained above under xfs_sync.
- *
- */
-int
-xfs_syncsub(
- xfs_mount_t *mp,
- int flags,
- int *bypassed)
-{
- int error = 0;
- int last_error = 0;
- uint log_flags = XFS_LOG_FORCE;
- xfs_buf_t *bp;
- xfs_buf_log_item_t *bip;
-
- /*
- * Sync out the log. This ensures that the log is periodically
- * flushed even if there is not enough activity to fill it up.
- */
- if (flags & SYNC_WAIT)
- log_flags |= XFS_LOG_SYNC;
-
- xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
-
- if (flags & (SYNC_ATTR|SYNC_DELWRI)) {
- if (flags & SYNC_BDFLUSH)
- xfs_finish_reclaim_all(mp, 1);
- else
- error = xfs_sync_inodes(mp, flags, bypassed);
- }
-
- /*
- * Flushing out dirty data above probably generated more
- * log activity, so if this isn't vfs_sync() then flush
- * the log again.
- */
- if (flags & SYNC_DELWRI) {
- xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
- }
-
- if (flags & SYNC_FSDATA) {
- /*
- * If this is vfs_sync() then only sync the superblock
- * if we can lock it without sleeping and it is not pinned.
- */
- if (flags & SYNC_BDFLUSH) {
- bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
- if (bp != NULL) {
- bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
- if ((bip != NULL) &&
- xfs_buf_item_dirty(bip)) {
- if (!(XFS_BUF_ISPINNED(bp))) {
- XFS_BUF_ASYNC(bp);
- error = xfs_bwrite(mp, bp);
- } else {
- xfs_buf_relse(bp);
- }
- } else {
- xfs_buf_relse(bp);
- }
- }
- } else {
- bp = xfs_getsb(mp, 0);
- /*
- * If the buffer is pinned then push on the log so
- * we won't get stuck waiting in the write for
- * someone, maybe ourselves, to flush the log.
- * Even though we just pushed the log above, we
- * did not have the superblock buffer locked at
- * that point so it can become pinned in between
- * there and here.
- */
- if (XFS_BUF_ISPINNED(bp))
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
- if (flags & SYNC_WAIT)
- XFS_BUF_UNASYNC(bp);
- else
- XFS_BUF_ASYNC(bp);
- error = xfs_bwrite(mp, bp);
- }
- if (error) {
- last_error = error;
- }
- }
-
- /*
- * If this is the periodic sync, then kick some entries out of
- * the reference cache. This ensures that idle entries are
- * eventually kicked out of the cache.
- */
- if (flags & SYNC_REFCACHE) {
- if (flags & SYNC_WAIT)
- xfs_refcache_purge_mp(mp);
- else
- xfs_refcache_purge_some(mp);
- }
-
- /*
- * If asked, update the disk superblock with incore counter values if we
- * are using non-persistent counters so that they don't get too far out
- * of sync if we crash or get a forced shutdown. We don't want to force
- * this to disk, just get a transaction into the iclogs....
- */
- if (flags & SYNC_SUPER)
- xfs_log_sbcount(mp, 0);
-
- /*
- * Now check to see if the log needs a "dummy" transaction.
- */
-
- if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) {
- xfs_trans_t *tp;
- xfs_inode_t *ip;
-
- /*
- * Put a dummy transaction in the log to tell
- * recovery that all others are OK.
- */
- tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
- if ((error = xfs_trans_reserve(tp, 0,
- XFS_ICHANGE_LOG_RES(mp),
- 0, 0, 0))) {
- xfs_trans_cancel(tp, 0);
- return error;
- }
-
- ip = mp->m_rootip;
- xfs_ilock(ip, XFS_ILOCK_EXCL);
-
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- error = xfs_trans_commit(tp, 0);
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
- xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
- }
-
- /*
- * When shutting down, we need to insure that the AIL is pushed
- * to disk or the filesystem can appear corrupt from the PROM.
- */
- if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) {
- XFS_bflush(mp->m_ddev_targp);
- if (mp->m_rtdev_targp) {
- XFS_bflush(mp->m_rtdev_targp);
- }
- }
-
- return XFS_ERROR(last_error);
-}
-
-/*
- * xfs_vget - called by DMAPI and NFSD to get vnode from file handle
- */
-int
-xfs_vget(
- xfs_mount_t *mp,
- bhv_vnode_t **vpp,
- xfs_fid_t *xfid)
-{
- 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->fid_len != sizeof(*xfid) - sizeof(xfid->fid_len))
- return XFS_ERROR(EINVAL);
-
- ino = xfid->fid_ino;
- igen = xfid->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_NORECOVERY "norecovery" /* don't run XFS recovery */
-#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
- * unwritten extent conversion */
-#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
-#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 */
-#define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
-#define MNTOPT_QUOTA "quota" /* disk quotas (user) */
-#define MNTOPT_NOQUOTA "noquota" /* no quotas */
-#define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */
-#define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */
-#define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */
-#define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */
-#define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */
-#define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */
-#define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
-#define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
-#define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
-#define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
-#define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */
-#define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */
-#define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */
-
-STATIC unsigned long
-suffix_strtoul(char *s, char **endp, unsigned int base)
-{
- int last, shift_left_factor = 0;
- char *value = s;
-
- 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((const char *)s, endp, base) << shift_left_factor;
-}
-
-int
-xfs_parseargs(
- struct xfs_mount *mp,
- char *options,
- struct xfs_mount_args *args,
- int update)
-{
- char *this_char, *value, *eov;
- int dsunit, dswidth, vol_dsunit, vol_dswidth;
- int iosize;
- int ikeep = 0;
-
- args->flags |= XFSMNT_BARRIER;
- args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
-
- if (!options)
- goto done;
-
- 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) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- this_char);
- return EINVAL;
- }
- args->logbufs = simple_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
- if (!value || !*value) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- this_char);
- return EINVAL;
- }
- args->logbufsize = suffix_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
- if (!value || !*value) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- this_char);
- return EINVAL;
- }
- strncpy(args->logname, value, MAXNAMELEN);
- } else if (!strcmp(this_char, MNTOPT_MTPT)) {
- if (!value || !*value) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- this_char);
- return EINVAL;
- }
- strncpy(args->mtpt, value, MAXNAMELEN);
- } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
- if (!value || !*value) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- this_char);
- return EINVAL;
- }
- strncpy(args->rtname, value, MAXNAMELEN);
- } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
- if (!value || !*value) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- 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) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- 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_GRPID) ||
- !strcmp(this_char, MNTOPT_BSDGROUPS)) {
- mp->m_flags |= XFS_MOUNT_GRPID;
- } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
- !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
- mp->m_flags &= ~XFS_MOUNT_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
- cmn_err(CE_WARN,
- "XFS: %s option not allowed on this system",
- 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) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- this_char);
- return EINVAL;
- }
- dsunit = simple_strtoul(value, &eov, 10);
- } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
- if (!value || !*value) {
- cmn_err(CE_WARN,
- "XFS: %s option requires an argument",
- 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
- cmn_err(CE_WARN,
- "XFS: %s option not allowed on this system",
- 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_NOBARRIER)) {
- args->flags &= ~XFSMNT_BARRIER;
- } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
- ikeep = 1;
- args->flags &= ~XFSMNT_IDELETE;
- } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
- args->flags |= XFSMNT_IDELETE;
- } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
- args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
- } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
- args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
- } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
- args->flags |= XFSMNT_ATTR2;
- } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
- args->flags &= ~XFSMNT_ATTR2;
- } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
- args->flags2 |= XFSMNT2_FILESTREAMS;
- } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
- args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA);
- args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA);
- } else if (!strcmp(this_char, MNTOPT_QUOTA) ||
- !strcmp(this_char, MNTOPT_UQUOTA) ||
- !strcmp(this_char, MNTOPT_USRQUOTA)) {
- args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF;
- } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) ||
- !strcmp(this_char, MNTOPT_UQUOTANOENF)) {
- args->flags |= XFSMNT_UQUOTA;
- args->flags &= ~XFSMNT_UQUOTAENF;
- } else if (!strcmp(this_char, MNTOPT_PQUOTA) ||
- !strcmp(this_char, MNTOPT_PRJQUOTA)) {
- args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF;
- } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) {
- args->flags |= XFSMNT_PQUOTA;
- args->flags &= ~XFSMNT_PQUOTAENF;
- } else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
- !strcmp(this_char, MNTOPT_GRPQUOTA)) {
- args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF;
- } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
- args->flags |= XFSMNT_GQUOTA;
- args->flags &= ~XFSMNT_GQUOTAENF;
- } else if (!strcmp(this_char, MNTOPT_DMAPI)) {
- args->flags |= XFSMNT_DMAPI;
- } else if (!strcmp(this_char, MNTOPT_XDSM)) {
- args->flags |= XFSMNT_DMAPI;
- } else if (!strcmp(this_char, MNTOPT_DMI)) {
- args->flags |= XFSMNT_DMAPI;
- } else if (!strcmp(this_char, "ihashsize")) {
- cmn_err(CE_WARN,
- "XFS: ihashsize no longer used, option is deprecated.");
- } else if (!strcmp(this_char, "osyncisdsync")) {
- /* no-op, this is now the default */
- cmn_err(CE_WARN,
- "XFS: osyncisdsync is now the default, option is deprecated.");
- } else if (!strcmp(this_char, "irixsgid")) {
- cmn_err(CE_WARN,
- "XFS: irixsgid is now a sysctl(2) variable, option is deprecated.");
- } else {
- cmn_err(CE_WARN,
- "XFS: unknown mount option [%s].", this_char);
- return EINVAL;
- }
- }
-
- if (args->flags & XFSMNT_NORECOVERY) {
- if ((mp->m_flags & XFS_MOUNT_RDONLY) == 0) {
- cmn_err(CE_WARN,
- "XFS: no-recovery mounts must be read-only.");
- return EINVAL;
- }
- }
-
- if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
- cmn_err(CE_WARN,
- "XFS: sunit and swidth options incompatible with the noalign option");
- return EINVAL;
- }
-
- if ((args->flags & XFSMNT_GQUOTA) && (args->flags & XFSMNT_PQUOTA)) {
- cmn_err(CE_WARN,
- "XFS: cannot mount with both project and group quota");
- return EINVAL;
- }
-
- if ((args->flags & XFSMNT_DMAPI) && *args->mtpt == '\0') {
- printk("XFS: %s option needs the mount point option as well\n",
- MNTOPT_DMAPI);
- return EINVAL;
- }
-
- if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
- cmn_err(CE_WARN,
- "XFS: sunit and swidth must be specified together");
- return EINVAL;
- }
-
- if (dsunit && (dswidth % dsunit != 0)) {
- cmn_err(CE_WARN,
- "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)",
- dswidth, dsunit);
- return EINVAL;
- }
-
- /*
- * Applications using DMI filesystems often expect the
- * inode generation number to be monotonically increasing.
- * If we delete inode chunks we break this assumption, so
- * keep unused inode chunks on disk for DMI filesystems
- * until we come up with a better solution.
- * Note that if "ikeep" or "noikeep" mount options are
- * supplied, then they are honored.
- */
- if (!(args->flags & XFSMNT_DMAPI) && !ikeep)
- args->flags |= XFSMNT_IDELETE;
-
- 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;
- }
-
-done:
- if (args->flags & XFSMNT_32BITINODES)
- mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
- if (args->flags2)
- args->flags |= XFSMNT_FLAGS2;
- return 0;
-}
-
-int
-xfs_showargs(
- struct xfs_mount *mp,
- 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 },
- { 0, NULL }
- };
- struct proc_xfs_info *xfs_infop;
-
- 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_DFLT_IOSIZE)
- seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
- (int)(1 << mp->m_writeio_log) >> 10);
-
- if (mp->m_logbufs > 0)
- seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
- if (mp->m_logbsize > 0)
- seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
-
- 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_IDELETE))
- seq_printf(m, "," MNTOPT_IKEEP);
- if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE))
- seq_printf(m, "," MNTOPT_LARGEIO);
-
- if (!(mp->m_flags & XFS_MOUNT_SMALL_INUMS))
- seq_printf(m, "," MNTOPT_64BITINODE);
- if (mp->m_flags & XFS_MOUNT_GRPID)
- seq_printf(m, "," MNTOPT_GRPID);
-
- if (mp->m_qflags & XFS_UQUOTA_ACCT) {
- if (mp->m_qflags & XFS_UQUOTA_ENFD)
- seq_puts(m, "," MNTOPT_USRQUOTA);
- else
- seq_puts(m, "," MNTOPT_UQUOTANOENF);
- }
-
- if (mp->m_qflags & XFS_PQUOTA_ACCT) {
- if (mp->m_qflags & XFS_OQUOTA_ENFD)
- seq_puts(m, "," MNTOPT_PRJQUOTA);
- else
- seq_puts(m, "," MNTOPT_PQUOTANOENF);
- }
-
- if (mp->m_qflags & XFS_GQUOTA_ACCT) {
- if (mp->m_qflags & XFS_OQUOTA_ENFD)
- seq_puts(m, "," MNTOPT_GRPQUOTA);
- else
- seq_puts(m, "," MNTOPT_GQUOTANOENF);
- }
-
- if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
- seq_puts(m, "," MNTOPT_NOQUOTA);
-
- if (mp->m_flags & XFS_MOUNT_DMAPI)
- seq_puts(m, "," MNTOPT_DMAPI);
- return 0;
-}
-
-/*
- * Second stage of a freeze. The data is already frozen so we only
- * need to take care of themetadata. Once that's done write a dummy
- * record to dirty the log in case of a crash while frozen.
- */
-void
-xfs_freeze(
- xfs_mount_t *mp)
-{
- xfs_attr_quiesce(mp);
- xfs_fs_log_dummy(mp);
-}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff