diff options
Diffstat (limited to 'fs/cifs/inode.c')
| -rw-r--r-- | fs/cifs/inode.c | 52 |
1 files changed, 42 insertions, 10 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 279f3c5e0ce3..5e8b388be3b6 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -115,7 +115,7 @@ int cifs_get_inode_info_unix(struct inode **pinode, inode->i_mode = le64_to_cpu(findData.Permissions); /* since we set the inode type below we need to mask off to avoid strange results if bits set above */ - inode->i_mode &= ~S_IFMT; + inode->i_mode &= ~S_IFMT; if (type == UNIX_FILE) { inode->i_mode |= S_IFREG; } else if (type == UNIX_SYMLINK) { @@ -575,19 +575,33 @@ int cifs_get_inode_info(struct inode **pinode, return rc; } +static const struct inode_operations cifs_ipc_inode_ops = { + .lookup = cifs_lookup, +}; + /* gets root inode */ void cifs_read_inode(struct inode *inode) { - int xid; + int xid, rc; struct cifs_sb_info *cifs_sb; cifs_sb = CIFS_SB(inode->i_sb); xid = GetXid(); if (cifs_sb->tcon->unix_ext) - cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid); + rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid); else - cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid); + rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid); + if (rc && cifs_sb->tcon->ipc) { + cFYI(1, ("ipc connection - fake read inode")); + inode->i_mode |= S_IFDIR; + inode->i_nlink = 2; + inode->i_op = &cifs_ipc_inode_ops; + inode->i_fop = &simple_dir_operations; + inode->i_uid = cifs_sb->mnt_uid; + inode->i_gid = cifs_sb->mnt_gid; + } + /* can not call macro FreeXid here since in a void func */ _FreeXid(xid); } @@ -919,18 +933,25 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) goto mkdir_out; } + mode &= ~current->fs->umask; rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode, NULL /* netfid */, pInfo, &oplock, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc) { + if (rc == -EOPNOTSUPP) { + kfree(pInfo); + goto mkdir_retry_old; + } else if (rc) { cFYI(1, ("posix mkdir returned 0x%x", rc)); d_drop(direntry); } else { int obj_type; - if (pInfo->Type == -1) /* no return info - go query */ + if (pInfo->Type == cpu_to_le32(-1)) { + /* no return info, go query for it */ + kfree(pInfo); goto mkdir_get_info; + } /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need to set uid/gid */ inc_nlink(inode); @@ -940,8 +961,10 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) direntry->d_op = &cifs_dentry_ops; newinode = new_inode(inode->i_sb); - if (newinode == NULL) + if (newinode == NULL) { + kfree(pInfo); goto mkdir_get_info; + } /* Is an i_ino of zero legal? */ /* Are there sanity checks we can use to ensure that the server is really filling in that field? */ @@ -972,7 +995,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) kfree(pInfo); goto mkdir_out; } - +mkdir_retry_old: /* BB add setting the equivalent of mode via CreateX w/ACLs */ rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); @@ -1377,8 +1400,17 @@ static int cifs_vmtruncate(struct inode *inode, loff_t offset) } i_size_write(inode, offset); spin_unlock(&inode->i_lock); + /* + * unmap_mapping_range is called twice, first simply for efficiency + * so that truncate_inode_pages does fewer single-page unmaps. However + * after this first call, and before truncate_inode_pages finishes, + * it is possible for private pages to be COWed, which remain after + * truncate_inode_pages finishes, hence the second unmap_mapping_range + * call must be made for correctness. + */ unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); truncate_inode_pages(mapping, offset); + unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); goto out_truncate; do_expand: @@ -1469,7 +1501,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs) atomic_dec(&open_file->wrtPending); cFYI(1, ("SetFSize for attrs rc = %d", rc)); if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { - int bytes_written; + unsigned int bytes_written; rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size, &bytes_written, NULL, NULL, @@ -1502,7 +1534,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs) cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == 0) { - int bytes_written; + unsigned int bytes_written; rc = CIFSSMBWrite(xid, pTcon, netfid, 0, attrs->ia_size, |
