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 20/32] wrapper.c: wrapper to open a file, fprintf then close Date: Sat, 30 Aug 2014 15:33:50 +0700 Message-ID: <1409387642-24492-21-git-send-email-pclouds@gmail.com> References: <1409387642-24492-1-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 , =?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 Sat Aug 30 10:35:59 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 1XNe8d-0002n1-BX for gcvg-git-2@plane.gmane.org; Sat, 30 Aug 2014 10:35:59 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751400AbaH3Ift convert rfc822-to-quoted-printable (ORCPT ); Sat, 30 Aug 2014 04:35:49 -0400 Received: from mail-pd0-f172.google.com ([209.85.192.172]:42570 "EHLO mail-pd0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751327AbaH3Ifo (ORCPT ); Sat, 30 Aug 2014 04:35:44 -0400 Received: by mail-pd0-f172.google.com with SMTP id z10so2023139pdj.17 for ; Sat, 30 Aug 2014 01:35:41 -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=ipDRqBwW+94ElqC7bq0epnIwuTT3T0iuA0nu5HV0pAg=; b=gQmKM64vXq0B21KlhdG7konZ6dIImj1cBggpVac+3cOo88GmhUVKhSCsHfvpMDzvSv 0/XRP+lLgTs4w98SyhPZIEj/N59jhkzEzDxitTF4PoT1tqQdfapDgKT7Zu4NxN9RkAcD joQs3xx3r+r2wlCcwuR9c3JWAZz5vbaOQ/pv39y6K9Q+o1iswnEjptcOCoPzAj12W03T Hij9tk6QiUxUnytnyfFk6T2QJPKbBX9v6NwXxhc90Oiz/+3+UQKXpVusnmOJ1HZDdWeb gUjRgoLtpf1wQ0/NuUjr1uicEHAEJatCgDj/ynA+bzxn/UqdPlCxcXkGx3rIohyOILAc E7/A== X-Received: by 10.68.225.133 with SMTP id rk5mr21839338pbc.101.1409387741738; Sat, 30 Aug 2014 01:35:41 -0700 (PDT) Received: from lanh ([115.73.195.142]) by mx.google.com with ESMTPSA id dq9sm3147581pdb.70.2014.08.30.01.35.39 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 30 Aug 2014 01:35:41 -0700 (PDT) Received: by lanh (sSMTP sendmail emulation); Sat, 30 Aug 2014 15:35:51 +0700 X-Mailer: git-send-email 2.1.0.rc0.78.gc0d8480 In-Reply-To: <1409387642-24492-1-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 Signed-off-by: Junio C Hamano --- 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 2.1.0.rc0.78.gc0d8480