From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Subject: [PATCH v7 20/31] wrapper.c: wrapper to open a file, fprintf then close Date: Sun, 13 Jul 2014 11:50:57 +0700 Message-ID: <1405227068-25506-21-git-send-email-pclouds@gmail.com> References: <1404891197-18067-1-git-send-email-pclouds@gmail.com> <1405227068-25506-1-git-send-email-pclouds@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Junio C Hamano , Max Kirillov , Eric Sunshine , =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Sun Jul 13 06:55:02 2014 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X6BoT-0000vQ-JW for gcvg-git-2@plane.gmane.org; Sun, 13 Jul 2014 06:55:01 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752924AbaGMEy6 convert rfc822-to-quoted-printable (ORCPT ); Sun, 13 Jul 2014 00:54:58 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:41232 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752911AbaGMEy5 (ORCPT ); Sun, 13 Jul 2014 00:54:57 -0400 Received: by mail-pa0-f54.google.com with SMTP id fa1so174424pad.13 for ; Sat, 12 Jul 2014 21:54:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type:content-transfer-encoding; bh=UcAyMgLnM6NHq12ee9jPu5m/Q393ZCVOB2nnAVE1qEU=; b=km9vzURG5nn+Ty/UxFAeEmCiusJfrAFKm6I2vL3H6Ct+lOuQkznUWc2zTUYSnkYfaH DCBtr2V11zpXFL0w2w5/1LK6JozKMr7/0I4x3SBUuLpIWF7pJwT5F43/WODraY6daGog dsnxXwcjSYFEZnbTllOJkqoj4yTmMP5BdNVyRM/OD3h4dRo6zgIrcGjEMGwan1S78WC2 52LOkTZHK0tsR5MsS+CkH7LKWa0YmaoNE5JlhFQ8o4rnUkhVUXlW1bbr69BBxr9paFtn 4VOqs4awPEHGZ8sGEe+0Mcw8TeeWjfqbt6H5jtD3g9jkpM4xhUFeR1L+Ifz1tzdPSCw+ GnQA== X-Received: by 10.66.255.38 with SMTP id an6mr8743764pad.43.1405227296622; Sat, 12 Jul 2014 21:54:56 -0700 (PDT) Received: from lanh ([115.73.227.1]) by mx.google.com with ESMTPSA id zf9sm29024812pab.5.2014.07.12.21.54.53 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 12 Jul 2014 21:54:56 -0700 (PDT) Received: by lanh (sSMTP sendmail emulation); Sun, 13 Jul 2014 11:54:56 +0700 X-Mailer: git-send-email 1.9.1.346.ga2b5940 In-Reply-To: <1405227068-25506-1-git-send-email-pclouds@gmail.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Signed-off-by: Nguy=E1=BB=85n Th=C3=A1i Ng=E1=BB=8Dc Duy --- cache.h | 2 ++ wrapper.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/cache.h b/cache.h index e3ff7dc..bf4d15e 100644 --- a/cache.h +++ b/cache.h @@ -1359,6 +1359,8 @@ static inline ssize_t write_str_in_full(int fd, c= onst char *str) { return write_in_full(fd, str, strlen(str)); } +__attribute__((format (printf,3,4))) +extern int write_file(const char *path, int fatal, const char *fmt, ..= =2E); =20 /* pager.c */ extern void setup_pager(void); diff --git a/wrapper.c b/wrapper.c index bc1bfb8..9d7b9ac 100644 --- a/wrapper.c +++ b/wrapper.c @@ -493,3 +493,34 @@ struct passwd *xgetpwuid_self(void) errno ? strerror(errno) : _("no such user")); return pw; } + +int write_file(const char *path, int fatal, const char *fmt, ...) +{ + struct strbuf sb =3D STRBUF_INIT; + va_list params; + int fd =3D open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); + if (fd < 0) { + if (fatal) + die_errno(_("could not open %s for writing"), path); + return -1; + } + va_start(params, fmt); + strbuf_vaddf(&sb, fmt, params); + va_end(params); + if (write_in_full(fd, sb.buf, sb.len) !=3D sb.len) { + int err =3D errno; + close(fd); + strbuf_release(&sb); + errno =3D err; + if (fatal) + die_errno(_("could not write to %s"), path); + return -1; + } + strbuf_release(&sb); + if (close(fd)) { + if (fatal) + die_errno(_("could not close %s"), path); + return -1; + } + return 0; +} --=20 1.9.1.346.ga2b5940