4.19-stable review patch. If anyone has any objections, please let me know.
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From: Paulo Alcantara palcantara@suse.com
commit c988de29ca161823db6a7125e803d597ef75b49c upstream.
Make sure to use the CIFS_DIR_SEP(cifs_sb) as path separator for prefixpath too. Fixes a bug with smb1 UNIX extensions.
Fixes: a6b5058fafdf ("fs/cifs: make share unaccessible at root level mountable") Signed-off-by: Paulo Alcantara palcantara@suse.com Reviewed-by: Aurelien Aptel aaptel@suse.com Signed-off-by: Steve French stfrench@microsoft.com CC: Stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/cifs/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -174,7 +174,7 @@ cifs_bp_rename_retry:
cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath); memcpy(full_path+dfsplen+1, cifs_sb->prepath, pplen-1); - full_path[dfsplen] = '\'; + full_path[dfsplen] = dirsep; for (i = 0; i < pplen-1; i++) if (full_path[dfsplen+1+i] == '/') full_path[dfsplen+1+i] = CIFS_DIR_SEP(cifs_sb);