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author | attilio <attilio@FreeBSD.org> | 2013-03-02 15:33:54 +0000 |
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committer | attilio <attilio@FreeBSD.org> | 2013-03-02 15:33:54 +0000 |
commit | 44df97db57f445ae083991d3b0923763985673d5 (patch) | |
tree | f2c251656791e363e72e4f525b14deaebd0f6c29 /sys/gnu/fs/xfs/xfs_dfrag.c | |
parent | 4b0353fc07e5e0a054a50bb98e473e42ae9c961d (diff) | |
download | FreeBSD-src-44df97db57f445ae083991d3b0923763985673d5.zip FreeBSD-src-44df97db57f445ae083991d3b0923763985673d5.tar.gz |
Garbage collect XFS bits which are now already completely disconnected
from the tree since few months.
This is not targeted for MFC.
Diffstat (limited to 'sys/gnu/fs/xfs/xfs_dfrag.c')
-rw-r--r-- | sys/gnu/fs/xfs/xfs_dfrag.c | 413 |
1 files changed, 0 insertions, 413 deletions
diff --git a/sys/gnu/fs/xfs/xfs_dfrag.c b/sys/gnu/fs/xfs/xfs_dfrag.c deleted file mode 100644 index 7b6b04e..0000000 --- a/sys/gnu/fs/xfs/xfs_dfrag.c +++ /dev/null @@ -1,413 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_types.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir.h" -#include "xfs_dir2.h" -#include "xfs_dmapi.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dir_sf.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_inode_item.h" -#include "xfs_bmap.h" -#include "xfs_btree.h" -#include "xfs_ialloc.h" -#include "xfs_itable.h" -#include "xfs_dfrag.h" -#include "xfs_error.h" -#include "xfs_mac.h" -#include "xfs_rw.h" - -#include <sys/capability.h> -#include <sys/file.h> - -/* - * Syssgi interface for swapext - */ -int -xfs_swapext( - xfs_swapext_t __user *sxu) -{ - xfs_swapext_t *sxp; - xfs_inode_t *ip=NULL, *tip=NULL; - xfs_mount_t *mp; - xfs_vnode_t *vp = NULL, *tvp = NULL; - struct vnode *bvp, *btvp; - int error = 0; - - sxp = kmem_alloc(sizeof(xfs_swapext_t), KM_MAYFAIL); - if (!sxp) { - error = XFS_ERROR(ENOMEM); - goto error0; - } - struct thread *td; - struct cred *cred; - - td = curthread; - cred = td->td_ucred; - - if (copy_from_user(sxp, sxu, sizeof(xfs_swapext_t))) { - error = XFS_ERROR(EFAULT); - goto error0; - } - - /* Pull information for the target fd */ - if (fgetvp(td, (int)sxp->sx_fdtarget, CAP_READ | CAP_WRITE, &bvp) - != 0) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - vp = VPTOXFSVP(bvp); - ip = xfs_vtoi(vp); - if (ip == NULL) { - error = XFS_ERROR(EBADF); - goto error0; - } - - if (fgetvp(td, (int)sxp->sx_fdtmp, CAP_READ | CAP_WRITE, &btvp) != 0) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - tvp = VPTOXFSVP(btvp); - tip = xfs_vtoi(tvp); - if (tip == NULL) { - error = XFS_ERROR(EBADF); - goto error0; - } - - if (ip->i_mount != tip->i_mount) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - if (ip->i_ino == tip->i_ino) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - mp = ip->i_mount; - - if (XFS_FORCED_SHUTDOWN(mp)) { - error = XFS_ERROR(EIO); - goto error0; - } - - error = XFS_SWAP_EXTENTS(mp, &ip->i_iocore, &tip->i_iocore, sxp); - - error0: -#ifdef RMC - if (fp != NULL) - fput(fp); - if (tfp != NULL) - fput(tfp); -#endif - - if (sxp != NULL) - kmem_free(sxp, sizeof(xfs_swapext_t)); - - return error; -} - -int -xfs_swap_extents( - xfs_inode_t *ip, - xfs_inode_t *tip, - xfs_swapext_t *sxp) -{ - xfs_mount_t *mp; - xfs_inode_t *ips[2]; - xfs_trans_t *tp; - xfs_bstat_t *sbp = &sxp->sx_stat; - xfs_vnode_t *vp, *tvp; - xfs_ifork_t *tempifp, *ifp, *tifp; - int ilf_fields, tilf_fields; - static uint lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL; - int error = 0; - int aforkblks = 0; - int taforkblks = 0; - __uint64_t tmp; - char locked = 0; - - mp = ip->i_mount; - - tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL); - if (!tempifp) { - error = XFS_ERROR(ENOMEM); - goto error0; - } - - sbp = &sxp->sx_stat; - vp = XFS_ITOV(ip); - tvp = XFS_ITOV(tip); - - /* Lock in i_ino order */ - if (ip->i_ino < tip->i_ino) { - ips[0] = ip; - ips[1] = tip; - } else { - ips[0] = tip; - ips[1] = ip; - } - - xfs_lock_inodes(ips, 2, 0, lock_flags); - locked = 1; - - /* Check permissions */ - error = xfs_iaccess(ip, VWRITE, NULL); - if (error) - goto error0; - - error = xfs_iaccess(tip, VWRITE, NULL); - if (error) - goto error0; - - /* Verify that both files have the same format */ - if ((ip->i_d.di_mode & S_IFMT) != (tip->i_d.di_mode & S_IFMT)) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - /* Verify both files are either real-time or non-realtime */ - if ((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != - (tip->i_d.di_flags & XFS_DIFLAG_REALTIME)) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - /* Should never get a local format */ - if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL || - tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - if (VN_CACHED(tvp) != 0) { - xfs_inval_cached_trace(&tip->i_iocore, 0, -1, 0, -1); - XVOP_FLUSHINVAL_PAGES(tvp, 0, -1, FI_REMAPF_LOCKED); - } - - /* Verify O_DIRECT for ftmp */ - if (VN_CACHED(tvp) != 0) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - /* Verify all data are being swapped */ - if (sxp->sx_offset != 0 || - sxp->sx_length != ip->i_d.di_size || - sxp->sx_length != tip->i_d.di_size) { - error = XFS_ERROR(EFAULT); - goto error0; - } - - /* - * If the target has extended attributes, the tmp file - * must also in order to ensure the correct data fork - * format. - */ - if ( XFS_IFORK_Q(ip) != XFS_IFORK_Q(tip) ) { - error = XFS_ERROR(EINVAL); - goto error0; - } - - /* - * Compare the current change & modify times with that - * passed in. If they differ, we abort this swap. - * This is the mechanism used to ensure the calling - * process that the file was not changed out from - * under it. - */ - if ((sbp->bs_ctime.tv_sec != ip->i_d.di_ctime.t_sec) || - (sbp->bs_ctime.tv_nsec != ip->i_d.di_ctime.t_nsec) || - (sbp->bs_mtime.tv_sec != ip->i_d.di_mtime.t_sec) || - (sbp->bs_mtime.tv_nsec != ip->i_d.di_mtime.t_nsec)) { - error = XFS_ERROR(EBUSY); - goto error0; - } - - /* We need to fail if the file is memory mapped. Once we have tossed - * all existing pages, the page fault will have no option - * but to go to the filesystem for pages. By making the page fault call - * VOP_READ (or write in the case of autogrow) they block on the iolock - * until we have switched the extents. - */ - if (VN_MAPPED(vp)) { - error = XFS_ERROR(EBUSY); - goto error0; - } - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - xfs_iunlock(tip, XFS_ILOCK_EXCL); - - /* - * There is a race condition here since we gave up the - * ilock. However, the data fork will not change since - * we have the iolock (locked for truncation too) so we - * are safe. We don't really care if non-io related - * fields change. - */ - - XVOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF); - - tp = xfs_trans_alloc(mp, XFS_TRANS_SWAPEXT); - if ((error = xfs_trans_reserve(tp, 0, - XFS_ICHANGE_LOG_RES(mp), 0, - 0, 0))) { - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - xfs_iunlock(tip, XFS_IOLOCK_EXCL); - xfs_trans_cancel(tp, 0); - locked = 0; - goto error0; - } - xfs_lock_inodes(ips, 2, 0, XFS_ILOCK_EXCL); - - /* - * Count the number of extended attribute blocks - */ - if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) && - (ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { - error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &aforkblks); - if (error) { - xfs_trans_cancel(tp, 0); - goto error0; - } - } - if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) && - (tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { - error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK, - &taforkblks); - if (error) { - xfs_trans_cancel(tp, 0); - goto error0; - } - } - - /* - * Swap the data forks of the inodes - */ - ifp = &ip->i_df; - tifp = &tip->i_df; - *tempifp = *ifp; /* struct copy */ - *ifp = *tifp; /* struct copy */ - *tifp = *tempifp; /* struct copy */ - - /* - * Fix the on-disk inode values - */ - tmp = (__uint64_t)ip->i_d.di_nblocks; - ip->i_d.di_nblocks = tip->i_d.di_nblocks - taforkblks + aforkblks; - tip->i_d.di_nblocks = tmp + taforkblks - aforkblks; - - tmp = (__uint64_t) ip->i_d.di_nextents; - ip->i_d.di_nextents = tip->i_d.di_nextents; - tip->i_d.di_nextents = tmp; - - tmp = (__uint64_t) ip->i_d.di_format; - ip->i_d.di_format = tip->i_d.di_format; - tip->i_d.di_format = tmp; - - ilf_fields = XFS_ILOG_CORE; - - switch(ip->i_d.di_format) { - case XFS_DINODE_FMT_EXTENTS: - /* If the extents fit in the inode, fix the - * pointer. Otherwise it's already NULL or - * pointing to the extent. - */ - if (ip->i_d.di_nextents <= XFS_INLINE_EXTS) { - ifp->if_u1.if_extents = - ifp->if_u2.if_inline_ext; - } - ilf_fields |= XFS_ILOG_DEXT; - break; - case XFS_DINODE_FMT_BTREE: - ilf_fields |= XFS_ILOG_DBROOT; - break; - } - - tilf_fields = XFS_ILOG_CORE; - - switch(tip->i_d.di_format) { - case XFS_DINODE_FMT_EXTENTS: - /* If the extents fit in the inode, fix the - * pointer. Otherwise it's already NULL or - * pointing to the extent. - */ - if (tip->i_d.di_nextents <= XFS_INLINE_EXTS) { - tifp->if_u1.if_extents = - tifp->if_u2.if_inline_ext; - } - tilf_fields |= XFS_ILOG_DEXT; - break; - case XFS_DINODE_FMT_BTREE: - tilf_fields |= XFS_ILOG_DBROOT; - break; - } - -#ifdef XXXKAN /* Not necessary, vnodes are vrefed already by fgetvp */ - /* - * Increment vnode ref counts since xfs_trans_commit & - * xfs_trans_cancel will both unlock the inodes and - * decrement the associated ref counts. - */ - VN_HOLD(vp); - VN_HOLD(tvp); -#endif - - xfs_trans_ijoin(tp, ip, lock_flags); - xfs_trans_ijoin(tp, tip, lock_flags); - - xfs_trans_log_inode(tp, ip, ilf_fields); - xfs_trans_log_inode(tp, tip, tilf_fields); - - /* - * If this is a synchronous mount, make sure that the - * transaction goes to disk before returning to the user. - */ - if (mp->m_flags & XFS_MOUNT_WSYNC) { - xfs_trans_set_sync(tp); - } - - error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT, NULL); - - locked = 0; - - error0: - if (locked) { - xfs_iunlock(ip, lock_flags); - xfs_iunlock(tip, lock_flags); - } - if (tempifp != NULL) - kmem_free(tempifp, sizeof(xfs_ifork_t)); - return error; -} |