diff options
Diffstat (limited to 'fs/smb/client/inode.c')
-rw-r--r-- | fs/smb/client/inode.c | 184 |
1 files changed, 139 insertions, 45 deletions
diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c index 42c030687918..75be4b46bc6f 100644 --- a/fs/smb/client/inode.c +++ b/fs/smb/client/inode.c @@ -746,6 +746,88 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, #endif } +#define POSIX_TYPE_FILE 0 +#define POSIX_TYPE_DIR 1 +#define POSIX_TYPE_SYMLINK 2 +#define POSIX_TYPE_CHARDEV 3 +#define POSIX_TYPE_BLKDEV 4 +#define POSIX_TYPE_FIFO 5 +#define POSIX_TYPE_SOCKET 6 + +#define POSIX_X_OTH 0000001 +#define POSIX_W_OTH 0000002 +#define POSIX_R_OTH 0000004 +#define POSIX_X_GRP 0000010 +#define POSIX_W_GRP 0000020 +#define POSIX_R_GRP 0000040 +#define POSIX_X_USR 0000100 +#define POSIX_W_USR 0000200 +#define POSIX_R_USR 0000400 +#define POSIX_STICKY 0001000 +#define POSIX_SET_GID 0002000 +#define POSIX_SET_UID 0004000 + +#define POSIX_OTH_MASK 0000007 +#define POSIX_GRP_MASK 0000070 +#define POSIX_USR_MASK 0000700 +#define POSIX_PERM_MASK 0000777 +#define POSIX_FILETYPE_MASK 0070000 + +#define POSIX_FILETYPE_SHIFT 12 + +static u32 wire_perms_to_posix(u32 wire) +{ + u32 mode = 0; + + mode |= (wire & POSIX_X_OTH) ? S_IXOTH : 0; + mode |= (wire & POSIX_W_OTH) ? S_IWOTH : 0; + mode |= (wire & POSIX_R_OTH) ? S_IROTH : 0; + mode |= (wire & POSIX_X_GRP) ? S_IXGRP : 0; + mode |= (wire & POSIX_W_GRP) ? S_IWGRP : 0; + mode |= (wire & POSIX_R_GRP) ? S_IRGRP : 0; + mode |= (wire & POSIX_X_USR) ? S_IXUSR : 0; + mode |= (wire & POSIX_W_USR) ? S_IWUSR : 0; + mode |= (wire & POSIX_R_USR) ? S_IRUSR : 0; + mode |= (wire & POSIX_STICKY) ? S_ISVTX : 0; + mode |= (wire & POSIX_SET_GID) ? S_ISGID : 0; + mode |= (wire & POSIX_SET_UID) ? S_ISUID : 0; + + return mode; +} + +static u32 posix_filetypes[] = { + S_IFREG, + S_IFDIR, + S_IFLNK, + S_IFCHR, + S_IFBLK, + S_IFIFO, + S_IFSOCK +}; + +static u32 wire_filetype_to_posix(u32 wire_type) +{ + if (wire_type >= ARRAY_SIZE(posix_filetypes)) { + pr_warn("Unexpected type %u", wire_type); + return 0; + } + return posix_filetypes[wire_type]; +} + +umode_t wire_mode_to_posix(u32 wire, bool is_dir) +{ + u32 wire_type; + u32 mode; + + wire_type = (wire & POSIX_FILETYPE_MASK) >> POSIX_FILETYPE_SHIFT; + /* older servers do not set POSIX file type in the mode field in the response */ + if ((wire_type == 0) && is_dir) + mode = wire_perms_to_posix(wire) | S_IFDIR; + else + mode = (wire_perms_to_posix(wire) | wire_filetype_to_posix(wire_type)); + return (umode_t)mode; +} + /* Fill a cifs_fattr struct with info from POSIX info struct */ static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, struct cifs_open_info_data *data, @@ -782,20 +864,14 @@ static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, fattr->cf_bytes = le64_to_cpu(info->AllocationSize); fattr->cf_createtime = le64_to_cpu(info->CreationTime); fattr->cf_nlink = le32_to_cpu(info->HardLinks); - fattr->cf_mode = (umode_t) le32_to_cpu(info->Mode); + fattr->cf_mode = wire_mode_to_posix(le32_to_cpu(info->Mode), + fattr->cf_cifsattrs & ATTR_DIRECTORY); if (cifs_open_data_reparse(data) && cifs_reparse_point_to_fattr(cifs_sb, fattr, data)) goto out_reparse; - fattr->cf_mode &= ~S_IFMT; - if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { - fattr->cf_mode |= S_IFDIR; - fattr->cf_dtype = DT_DIR; - } else { /* file */ - fattr->cf_mode |= S_IFREG; - fattr->cf_dtype = DT_REG; - } + fattr->cf_dtype = S_DT(fattr->cf_mode); out_reparse: if (S_ISLNK(fattr->cf_mode)) { @@ -914,7 +990,7 @@ cifs_get_file_info(struct file *filp) /* TODO: add support to query reparse tag */ data.adjust_tz = false; if (data.symlink_target) { - data.symlink = true; + data.reparse_point = true; data.reparse.tag = IO_REPARSE_TAG_SYMLINK; } path = build_path_from_dentry(dentry, page); @@ -1127,18 +1203,45 @@ static int reparse_info_to_fattr(struct cifs_open_info_data *data, goto out; } break; - case IO_REPARSE_TAG_MOUNT_POINT: - cifs_create_junction_fattr(fattr, sb); - rc = 0; - goto out; default: /* Check for cached reparse point data */ if (data->symlink_target || data->reparse.buf) { rc = 0; - } else if (iov && server->ops->parse_reparse_point) { - rc = server->ops->parse_reparse_point(cifs_sb, - full_path, - iov, data); + } else if (iov && server->ops->get_reparse_point_buffer) { + struct reparse_data_buffer *reparse_buf; + u32 reparse_len; + + reparse_buf = server->ops->get_reparse_point_buffer(iov, &reparse_len); + rc = parse_reparse_point(reparse_buf, reparse_len, + cifs_sb, full_path, data); + /* + * If the reparse point was not handled but it is the + * name surrogate which points to directory, then treat + * is as a new mount point. Name surrogate reparse point + * represents another named entity in the system. + */ + if (rc == -EOPNOTSUPP && + IS_REPARSE_TAG_NAME_SURROGATE(data->reparse.tag) && + (le32_to_cpu(data->fi.Attributes) & ATTR_DIRECTORY)) { + rc = 0; + cifs_create_junction_fattr(fattr, sb); + goto out; + } + /* + * If the reparse point is unsupported by the Linux SMB + * client then let it process by the SMB server. So mask + * the -EOPNOTSUPP error code. This will allow Linux SMB + * client to send SMB OPEN request to server. If server + * does not support this reparse point too then server + * will return error during open the path. + */ + if (rc == -EOPNOTSUPP) + rc = 0; + } + + if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK && !rc) { + bool directory = le32_to_cpu(data->fi.Attributes) & ATTR_DIRECTORY; + rc = smb2_fix_symlink_target_type(&data->symlink_target, directory, cifs_sb); } break; } @@ -1327,7 +1430,7 @@ int cifs_get_inode_info(struct inode **inode, struct cifs_fattr fattr = {}; int rc; - if (is_inode_cache_good(*inode)) { + if (!data && is_inode_cache_good(*inode)) { cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); return 0; } @@ -1426,7 +1529,7 @@ int smb311_posix_get_inode_info(struct inode **inode, struct cifs_fattr fattr = {}; int rc; - if (is_inode_cache_good(*inode)) { + if (!data && is_inode_cache_good(*inode)) { cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); return 0; } @@ -1871,6 +1974,7 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry) goto unlink_out; } + netfs_wait_for_outstanding_io(inode); cifs_close_deferred_file_under_dentry(tcon, full_path); #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & @@ -2112,8 +2216,8 @@ posix_mkdir_get_info: } #endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */ -int cifs_mkdir(struct mnt_idmap *idmap, struct inode *inode, - struct dentry *direntry, umode_t mode) +struct dentry *cifs_mkdir(struct mnt_idmap *idmap, struct inode *inode, + struct dentry *direntry, umode_t mode) { int rc = 0; unsigned int xid; @@ -2129,10 +2233,10 @@ int cifs_mkdir(struct mnt_idmap *idmap, struct inode *inode, cifs_sb = CIFS_SB(inode->i_sb); if (unlikely(cifs_forced_shutdown(cifs_sb))) - return -EIO; + return ERR_PTR(-EIO); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) - return PTR_ERR(tlink); + return ERR_CAST(tlink); tcon = tlink_tcon(tlink); xid = get_xid(); @@ -2188,7 +2292,7 @@ mkdir_out: free_dentry_path(page); free_xid(xid); cifs_put_tlink(tlink); - return rc; + return ERR_PTR(rc); } int cifs_rmdir(struct inode *inode, struct dentry *direntry) @@ -2315,6 +2419,13 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry, if (to_dentry->d_parent != from_dentry->d_parent) goto do_rename_exit; + /* + * CIFSSMBRenameOpenFile() uses SMB_SET_FILE_RENAME_INFORMATION + * which is SMB PASSTHROUGH level. + */ + if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) + goto do_rename_exit; + oparms = (struct cifs_open_parms) { .tcon = tcon, .cifs_sb = cifs_sb, @@ -2388,8 +2499,10 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir, } cifs_close_deferred_file_under_dentry(tcon, from_name); - if (d_inode(target_dentry) != NULL) + if (d_inode(target_dentry) != NULL) { + netfs_wait_for_outstanding_io(d_inode(target_dentry)); cifs_close_deferred_file_under_dentry(tcon, to_name); + } rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry, to_name); @@ -2797,23 +2910,6 @@ int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, u64 start, return -EOPNOTSUPP; } -int cifs_truncate_page(struct address_space *mapping, loff_t from) -{ - pgoff_t index = from >> PAGE_SHIFT; - unsigned offset = from & (PAGE_SIZE - 1); - struct page *page; - int rc = 0; - - page = grab_cache_page(mapping, index); - if (!page) - return -ENOMEM; - - zero_user_segment(page, offset, PAGE_SIZE); - unlock_page(page); - put_page(page); - return rc; -} - void cifs_setsize(struct inode *inode, loff_t offset) { struct cifsInodeInfo *cifs_i = CIFS_I(inode); @@ -2908,8 +3004,6 @@ set_size_out: */ attrs->ia_ctime = attrs->ia_mtime = current_time(inode); attrs->ia_valid |= ATTR_CTIME | ATTR_MTIME; - - cifs_truncate_page(inode->i_mapping, inode->i_size); } return rc; |