From owner-svn-src-all@FreeBSD.ORG Thu Jan 12 05:50:33 2012 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6F3BD1065672; Thu, 12 Jan 2012 05:50:33 +0000 (UTC) (envelope-from wollman@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 3F7348FC0A; Thu, 12 Jan 2012 05:50:33 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q0C5oXdc094720; Thu, 12 Jan 2012 05:50:33 GMT (envelope-from wollman@svn.freebsd.org) Received: (from wollman@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id q0C5oXEQ094718; Thu, 12 Jan 2012 05:50:33 GMT (envelope-from wollman@svn.freebsd.org) Message-Id: <201201120550.q0C5oXEQ094718@svn.freebsd.org> From: Garrett Wollman Date: Thu, 12 Jan 2012 05:50:33 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r230005 - head/usr.sbin/tzsetup X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2012 05:50:33 -0000 Author: wollman Date: Thu Jan 12 05:50:32 2012 New Revision: 230005 URL: http://svn.freebsd.org/changeset/base/230005 Log: Use a reasonable-sized buffer when formatting error messages about installing zoneinfo. While we're in the vicinity, add some missing error checking to eliminate an unhelpful error message when unlink() fails. /me is embarrassed by the quality of his 16-year-old code. The whole thing is awful and could stand a complete rewrite. PR: 164038 Submitted by: Devin Teske (but implemented differently) Modified: head/usr.sbin/tzsetup/tzsetup.c Modified: head/usr.sbin/tzsetup/tzsetup.c ============================================================================== --- head/usr.sbin/tzsetup/tzsetup.c Thu Jan 12 05:47:28 2012 (r230004) +++ head/usr.sbin/tzsetup/tzsetup.c Thu Jan 12 05:50:32 2012 (r230005) @@ -57,6 +57,13 @@ __FBSDID("$FreeBSD$"); #define _PATH_DB "/var/db/zoneinfo" #define _PATH_WALL_CMOS_CLOCK "/etc/wall_cmos_clock" +#ifdef PATH_MAX +#define SILLY_BUFFER_SIZE 2*PATH_MAX +#else +#warning "Somebody needs to fix this to dynamically size this buffer." +#define SILLY_BUFFER_SIZE 2048 +#endif + /* special return codes for `fire' actions */ #define DITEM_FAILURE 1 @@ -638,7 +645,7 @@ static int install_zoneinfo_file(const char *zoneinfo_file) { char buf[1024]; - char title[64], prompt[64]; + char title[64], prompt[SILLY_BUFFER_SIZE]; struct stat sb; ssize_t len; int fd1, fd2, copymode; @@ -709,7 +716,18 @@ install_zoneinfo_file(const char *zonein return (DITEM_FAILURE | DITEM_RECREATE); } - unlink(path_localtime); + if (unlink(path_localtime) < 0) { + snprintf(prompt, sizeof(prompt), + "Could not unlink %s: %s", + path_localtime, strerror(errno)); + if (usedialog) { + snprintf(title, sizeof(title), "Error"); + dialog_msgbox(title, prompt, 8, 72, 1); + } else + fprintf(stderr, "%s\n", prompt); + return (DITEM_FAILURE | DITEM_RECREATE); + } + fd2 = open(path_localtime, O_CREAT | O_EXCL | O_WRONLY, S_IRUSR | S_IRGRP | S_IROTH); if (fd2 < 0) { @@ -755,7 +773,17 @@ install_zoneinfo_file(const char *zonein fprintf(stderr, "%s\n", prompt); return (DITEM_FAILURE | DITEM_RECREATE); } - unlink(path_localtime); + if (unlink(path_localtime) < 0) { + snprintf(prompt, sizeof(prompt), + "Could not unlink %s: %s", + path_localtime, strerror(errno)); + if (usedialog) { + snprintf(title, sizeof(title), "Error"); + dialog_msgbox(title, prompt, 8, 72, 1); + } else + fprintf(stderr, "%s\n", prompt); + return (DITEM_FAILURE | DITEM_RECREATE); + } if (symlink(zoneinfo_file, path_localtime) < 0) { snprintf(title, sizeof(title), "Error"); snprintf(prompt, sizeof(prompt),