diff options
| -rw-r--r-- | source3/modules/vfs_streams_xattr.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/source3/modules/vfs_streams_xattr.c b/source3/modules/vfs_streams_xattr.c index e96f616e31..6530a1813b 100644 --- a/source3/modules/vfs_streams_xattr.c +++ b/source3/modules/vfs_streams_xattr.c @@ -29,6 +29,9 @@ struct stream_io { char *base; char *xattr_name; + void *fsp_name_ptr; + files_struct *fsp; + vfs_handle_struct *handle; }; static SMB_INO_T stream_inode(const SMB_STRUCT_STAT *sbuf, const char *sname) @@ -85,6 +88,49 @@ static ssize_t get_xattr_size(connection_struct *conn, return result; } +static bool streams_xattr_recheck(struct stream_io *sio) +{ + NTSTATUS status; + char *base = NULL; + char *sname = NULL; + char *xattr_name = NULL; + + if (sio->fsp->fsp_name == sio->fsp_name_ptr) { + return true; + } + + status = split_ntfs_stream_name(talloc_tos(), sio->fsp->fsp_name, + &base, &sname); + if (!NT_STATUS_IS_OK(status)) { + return false; + } + + if (sname == NULL) { + /* how can this happen */ + errno = EINVAL; + return false; + } + + xattr_name = talloc_asprintf(talloc_tos(), "%s%s", + SAMBA_XATTR_DOSSTREAM_PREFIX, sname); + if (xattr_name == NULL) { + return false; + } + + TALLOC_FREE(sio->xattr_name); + TALLOC_FREE(sio->base); + sio->xattr_name = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(sio->handle, sio->fsp), + xattr_name); + sio->base = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(sio->handle, sio->fsp), + base); + sio->fsp_name_ptr = sio->fsp->fsp_name; + + if ((sio->xattr_name == NULL) || (sio->base == NULL)) { + return false; + } + + return true; +} static int streams_xattr_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf) @@ -98,6 +144,10 @@ static int streams_xattr_fstat(vfs_handle_struct *handle, files_struct *fsp, return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf); } + if (!streams_xattr_recheck(io)) { + return -1; + } + if (SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf) == -1) { return -1; } @@ -365,6 +415,9 @@ static int streams_xattr_open(vfs_handle_struct *handle, const char *fname, xattr_name); sio->base = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(handle, fsp), base); + sio->fsp_name_ptr = fsp->fsp_name; + sio->handle = handle; + sio->fsp = fsp; if ((sio->xattr_name == NULL) || (sio->base == NULL)) { errno = ENOMEM; @@ -739,6 +792,10 @@ static ssize_t streams_xattr_pwrite(vfs_handle_struct *handle, return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset); } + if (!streams_xattr_recheck(sio)) { + return -1; + } + status = get_ea_value(talloc_tos(), handle->conn, fsp->base_fsp, sio->base, sio->xattr_name, &ea); if (!NT_STATUS_IS_OK(status)) { @@ -795,6 +852,10 @@ static ssize_t streams_xattr_pread(vfs_handle_struct *handle, return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset); } + if (!streams_xattr_recheck(sio)) { + return -1; + } + status = get_ea_value(talloc_tos(), handle->conn, fsp->base_fsp, sio->base, sio->xattr_name, &ea); if (!NT_STATUS_IS_OK(status)) { @@ -835,6 +896,10 @@ static int streams_xattr_ftruncate(struct vfs_handle_struct *handle, return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset); } + if (!streams_xattr_recheck(sio)) { + return -1; + } + status = get_ea_value(talloc_tos(), handle->conn, fsp->base_fsp, sio->base, sio->xattr_name, &ea); if (!NT_STATUS_IS_OK(status)) { |