diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_iops.c | 30 | ||||
| -rw-r--r-- | fs/xfs/xfs_vnodeops.c | 351 | ||||
| -rw-r--r-- | fs/xfs/xfs_vnodeops.h | 2 |
3 files changed, 92 insertions, 291 deletions
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 7aa53fefc67f..e103b05dc777 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -211,8 +211,13 @@ xfs_vn_mknod( * Irix uses Missed'em'V split, but doesn't want to see * the upper 5 bits of (14bit) major. */ - if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) - return -EINVAL; + if (S_ISCHR(mode) || S_ISBLK(mode)) { + if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) + return -EINVAL; + rdev = sysv_encode_dev(rdev); + } else { + rdev = 0; + } if (test_default_acl && test_default_acl(dir)) { if (!_ACL_ALLOC(default_acl)) { @@ -224,28 +229,11 @@ xfs_vn_mknod( } } - xfs_dentry_to_name(&name, dentry); - if (IS_POSIXACL(dir) && !default_acl) mode &= ~current->fs->umask; - switch (mode & S_IFMT) { - case S_IFCHR: - case S_IFBLK: - case S_IFIFO: - case S_IFSOCK: - rdev = sysv_encode_dev(rdev); - case S_IFREG: - error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); - break; - case S_IFDIR: - error = xfs_mkdir(XFS_I(dir), &name, mode, &ip, NULL); - break; - default: - error = EINVAL; - break; - } - + xfs_dentry_to_name(&name, dentry); + error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); if (unlikely(error)) goto out_free_acl; diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index bc0a0a75b1d6..59de04954bc8 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1387,23 +1387,28 @@ xfs_create( xfs_inode_t **ipp, cred_t *credp) { - xfs_mount_t *mp = dp->i_mount; - xfs_inode_t *ip; - xfs_trans_t *tp; + int is_dir = S_ISDIR(mode); + struct xfs_mount *mp = dp->i_mount; + struct xfs_inode *ip = NULL; + struct xfs_trans *tp = NULL; int error; xfs_bmap_free_t free_list; xfs_fsblock_t first_block; boolean_t unlock_dp_on_error = B_FALSE; - int dm_event_sent = 0; uint cancel_flags; int committed; xfs_prid_t prid; - struct xfs_dquot *udqp, *gdqp; + struct xfs_dquot *udqp = NULL; + struct xfs_dquot *gdqp = NULL; uint resblks; + uint log_res; + uint log_count; - ASSERT(!*ipp); xfs_itrace_entry(dp); + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + if (DM_EVENT_ENABLED(dp, DM_EVENT_CREATE)) { error = XFS_SEND_NAMESP(mp, DM_EVENT_CREATE, dp, DM_RIGHT_NULL, NULL, @@ -1412,84 +1417,97 @@ xfs_create( if (error) return error; - dm_event_sent = 1; } - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - /* Return through std_return after this point. */ - - udqp = gdqp = NULL; if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) prid = dp->i_d.di_projid; else - prid = (xfs_prid_t)dfltprid; + prid = dfltprid; /* * Make sure that we have allocated dquot(s) on disk. */ error = XFS_QM_DQVOPALLOC(mp, dp, current_fsuid(), current_fsgid(), prid, - XFS_QMOPT_QUOTALL|XFS_QMOPT_INHERIT, &udqp, &gdqp); + XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp); if (error) goto std_return; - ip = NULL; + if (is_dir) { + rdev = 0; + resblks = XFS_MKDIR_SPACE_RES(mp, name->len); + log_res = XFS_MKDIR_LOG_RES(mp); + log_count = XFS_MKDIR_LOG_COUNT; + tp = xfs_trans_alloc(mp, XFS_TRANS_MKDIR); + } else { + resblks = XFS_CREATE_SPACE_RES(mp, name->len); + log_res = XFS_CREATE_LOG_RES(mp); + log_count = XFS_CREATE_LOG_COUNT; + tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE); + } - tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE); cancel_flags = XFS_TRANS_RELEASE_LOG_RES; - resblks = XFS_CREATE_SPACE_RES(mp, name->len); + /* * Initially assume that the file does not exist and * reserve the resources for that case. If that is not * the case we'll drop the one we have and get a more * appropriate transaction later. */ - error = xfs_trans_reserve(tp, resblks, XFS_CREATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_CREATE_LOG_COUNT); + error = xfs_trans_reserve(tp, resblks, log_res, 0, + XFS_TRANS_PERM_LOG_RES, log_count); if (error == ENOSPC) { resblks = 0; - error = xfs_trans_reserve(tp, 0, XFS_CREATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_CREATE_LOG_COUNT); + error = xfs_trans_reserve(tp, 0, log_res, 0, + XFS_TRANS_PERM_LOG_RES, log_count); } if (error) { cancel_flags = 0; - goto error_return; + goto out_trans_cancel; } xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); unlock_dp_on_error = B_TRUE; - xfs_bmap_init(&free_list, &first_block); + /* + * Check for directory link count overflow. + */ + if (is_dir && dp->i_d.di_nlink >= XFS_MAXLINK) { + error = XFS_ERROR(EMLINK); + goto out_trans_cancel; + } - ASSERT(ip == NULL); + xfs_bmap_init(&free_list, &first_block); /* * Reserve disk quota and the inode. */ error = XFS_TRANS_RESERVE_QUOTA(mp, tp, udqp, gdqp, resblks, 1, 0); if (error) - goto error_return; + goto out_trans_cancel; error = xfs_dir_canenter(tp, dp, name, resblks); if (error) - goto error_return; - error = xfs_dir_ialloc(&tp, dp, mode, 1, - rdev, credp, prid, resblks > 0, - &ip, &committed); + goto out_trans_cancel; + + /* + * A newly created regular or special file just has one directory + * entry pointing to them, but a directory also the "." entry + * pointing to itself. + */ + error = xfs_dir_ialloc(&tp, dp, mode, is_dir ? 2 : 1, rdev, credp, + prid, resblks > 0, &ip, &committed); if (error) { if (error == ENOSPC) - goto error_return; - goto abort_return; + goto out_trans_cancel; + goto out_trans_abort; } - xfs_itrace_ref(ip); /* * At this point, we've gotten a newly allocated inode. * It is locked (and joined to the transaction). */ - + xfs_itrace_ref(ip); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); /* @@ -1508,19 +1526,28 @@ xfs_create( resblks - XFS_IALLOC_SPACE_RES(mp) : 0); if (error) { ASSERT(error != ENOSPC); - goto abort_return; + goto out_trans_abort; } xfs_ichgtime(dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); + if (is_dir) { + error = xfs_dir_init(tp, ip, dp); + if (error) + goto out_bmap_cancel; + + error = xfs_bumplink(tp, dp); + if (error) + goto out_bmap_cancel; + } + /* * If this is a synchronous mount, make sure that the * create transaction goes to disk before returning to * the user. */ - if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { + if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) xfs_trans_set_sync(tp); - } /* * Attach the dquot(s) to the inodes and modify them incore. @@ -1537,16 +1564,13 @@ xfs_create( IHOLD(ip); error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) { - xfs_bmap_cancel(&free_list); - goto abort_rele; - } + if (error) + goto out_abort_rele; error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); if (error) { IRELE(ip); - tp = NULL; - goto error_return; + goto out_dqrele; } XFS_QM_DQRELE(mp, udqp); @@ -1555,26 +1579,22 @@ xfs_create( *ipp = ip; /* Fallthrough to std_return with error = 0 */ - -std_return: - if ((*ipp || (error != 0 && dm_event_sent != 0)) && - DM_EVENT_ENABLED(dp, DM_EVENT_POSTCREATE)) { - (void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTCREATE, - dp, DM_RIGHT_NULL, - *ipp ? ip : NULL, - DM_RIGHT_NULL, name->name, NULL, - mode, error, 0); + std_return: + if (DM_EVENT_ENABLED(dp, DM_EVENT_POSTCREATE)) { + XFS_SEND_NAMESP(mp, DM_EVENT_POSTCREATE, dp, DM_RIGHT_NULL, + ip, DM_RIGHT_NULL, name->name, NULL, mode, + error, 0); } + return error; - abort_return: + out_bmap_cancel: + xfs_bmap_cancel(&free_list); + out_trans_abort: cancel_flags |= XFS_TRANS_ABORT; - /* FALLTHROUGH */ - - error_return: - if (tp != NULL) - xfs_trans_cancel(tp, cancel_flags); - + out_trans_cancel: + xfs_trans_cancel(tp, cancel_flags); + out_dqrele: XFS_QM_DQRELE(mp, udqp); XFS_QM_DQRELE(mp, gdqp); @@ -1583,20 +1603,18 @@ std_return: goto std_return; - abort_rele: + out_abort_rele: /* * Wait until after the current transaction is aborted to * release the inode. This prevents recursive transactions * and deadlocks from xfs_inactive. */ + xfs_bmap_cancel(&free_list); cancel_flags |= XFS_TRANS_ABORT; xfs_trans_cancel(tp, cancel_flags); IRELE(ip); - - XFS_QM_DQRELE(mp, udqp); - XFS_QM_DQRELE(mp, gdqp); - - goto std_return; + unlock_dp_on_error = B_FALSE; + goto out_dqrele; } #ifdef DEBUG @@ -2112,209 +2130,6 @@ std_return: goto std_return; } - -int -xfs_mkdir( - xfs_inode_t *dp, - struct xfs_name *dir_name, - mode_t mode, - xfs_inode_t **ipp, - cred_t *credp) -{ - xfs_mount_t *mp = dp->i_mount; - xfs_inode_t *cdp; /* inode of created dir */ - xfs_trans_t *tp; - int cancel_flags; - int error; - int committed; - xfs_bmap_free_t free_list; - xfs_fsblock_t first_block; - boolean_t unlock_dp_on_error = B_FALSE; - boolean_t created = B_FALSE; - int dm_event_sent = 0; - xfs_prid_t prid; - struct xfs_dquot *udqp, *gdqp; - uint resblks; - - if (XFS_FORCED_SHUTDOWN(mp)) - return XFS_ERROR(EIO); - - tp = NULL; - - if (DM_EVENT_ENABLED(dp, DM_EVENT_CREATE)) { - error = XFS_SEND_NAMESP(mp, DM_EVENT_CREATE, - dp, DM_RIGHT_NULL, NULL, - DM_RIGHT_NULL, dir_name->name, NULL, - mode, 0, 0); - if (error) - return error; - dm_event_sent = 1; - } - - /* Return through std_return after this point. */ - - xfs_itrace_entry(dp); - - mp = dp->i_mount; - udqp = gdqp = NULL; - if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) - prid = dp->i_d.di_projid; - else - prid = (xfs_prid_t)dfltprid; - - /* - * Make sure that we have allocated dquot(s) on disk. - */ - error = XFS_QM_DQVOPALLOC(mp, dp, - current_fsuid(), current_fsgid(), prid, - XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp); - if (error) - goto std_return; - - tp = xfs_trans_alloc(mp, XFS_TRANS_MKDIR); - cancel_flags = XFS_TRANS_RELEASE_LOG_RES; - resblks = XFS_MKDIR_SPACE_RES(mp, dir_name->len); - error = xfs_trans_reserve(tp, resblks, XFS_MKDIR_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, XFS_MKDIR_LOG_COUNT); - if (error == ENOSPC) { - resblks = 0; - error = xfs_trans_reserve(tp, 0, XFS_MKDIR_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_MKDIR_LOG_COUNT); - } - if (error) { - cancel_flags = 0; - goto error_return; - } - - xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); - unlock_dp_on_error = B_TRUE; - - /* - * Check for directory link count overflow. - */ - if (dp->i_d.di_nlink >= XFS_MAXLINK) { - error = XFS_ERROR(EMLINK); - goto error_return; - } - - /* - * Reserve disk quota and the inode. - */ - error = XFS_TRANS_RESERVE_QUOTA(mp, tp, udqp, gdqp, resblks, 1, 0); - if (error) - goto error_return; - - error = xfs_dir_canenter(tp, dp, dir_name, resblks); - if (error) - goto error_return; - /* - * create the directory inode. - */ - error = xfs_dir_ialloc(&tp, dp, mode, 2, - 0, credp, prid, resblks > 0, - &cdp, NULL); - if (error) { - if (error == ENOSPC) - goto error_return; - goto abort_return; - } - xfs_itrace_ref(cdp); - - /* - * Now we add the directory inode to the transaction. - * We waited until now since xfs_dir_ialloc might start - * a new transaction. Had we joined the transaction - * earlier, the locks might have gotten released. An error - * from here on will result in the transaction cancel - * unlocking dp so don't do it explicitly in the error path. - */ - IHOLD(dp); - xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL); - unlock_dp_on_error = B_FALSE; - - xfs_bmap_init(&free_list, &first_block); - - error = xfs_dir_createname(tp, dp, dir_name, cdp->i_ino, - &first_block, &free_list, resblks ? - resblks - XFS_IALLOC_SPACE_RES(mp) : 0); - if (error) { - ASSERT(error != ENOSPC); - goto error1; - } - xfs_ichgtime(dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - - error = xfs_dir_init(tp, cdp, dp); - if (error) - goto error2; - - error = xfs_bumplink(tp, dp); - if (error) - goto error2; - - created = B_TRUE; - - *ipp = cdp; - IHOLD(cdp); - - /* - * Attach the dquots to the new inode and modify the icount incore. - */ - XFS_QM_DQVOPCREATE(mp, tp, cdp, udqp, gdqp); - - /* - * If this is a synchronous mount, make sure that the - * mkdir transaction goes to disk before returning to - * the user. - */ - if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { - xfs_trans_set_sync(tp); - } - - error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) { - IRELE(cdp); - goto error2; - } - - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - XFS_QM_DQRELE(mp, udqp); - XFS_QM_DQRELE(mp, gdqp); - if (error) { - IRELE(cdp); - } - - /* Fall through to std_return with error = 0 or errno from - * xfs_trans_commit. */ - -std_return: - if ((created || (error != 0 && dm_event_sent != 0)) && - DM_EVENT_ENABLED(dp, DM_EVENT_POSTCREATE)) { - (void) XFS_SEND_NAMESP(mp, DM_EVENT_POSTCREATE, - dp, DM_RIGHT_NULL, - created ? cdp : NULL, - DM_RIGHT_NULL, - dir_name->name, NULL, - mode, error, 0); - } - return error; - - error2: - error1: - xfs_bmap_cancel(&free_list); - abort_return: - cancel_flags |= XFS_TRANS_ABORT; - error_return: - xfs_trans_cancel(tp, cancel_flags); - XFS_QM_DQRELE(mp, udqp); - XFS_QM_DQRELE(mp, gdqp); - - if (unlock_dp_on_error) - xfs_iunlock(dp, XFS_ILOCK_EXCL); - - goto std_return; -} - int xfs_symlink( xfs_inode_t *dp, diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h index 2258df3fae84..04373c6c61ff 100644 --- a/fs/xfs/xfs_vnodeops.h +++ b/fs/xfs/xfs_vnodeops.h @@ -31,8 +31,6 @@ int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, struct xfs_inode *ip); int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, struct xfs_name *target_name); -int xfs_mkdir(struct xfs_inode *dp, struct xfs_name *dir_name, - mode_t mode, struct xfs_inode **ipp, cred_t *credp); int xfs_readdir(struct xfs_inode *dp, void *dirent, size_t bufsize, xfs_off_t *offset, filldir_t filldir); int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name, |