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Diffstat (limited to 'fs/smb/client/inode.c')
-rw-r--r--fs/smb/client/inode.c184
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;