From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ronnie Sahlberg Subject: [PATCH v2 12/15] refs.c: rename log_ref_setup to create_reflog Date: Mon, 3 Nov 2014 08:55:54 -0800 Message-ID: <1415033757-9539-13-git-send-email-sahlberg@google.com> References: <1415033757-9539-1-git-send-email-sahlberg@google.com> Cc: Ronnie Sahlberg , Jonathan Nieder To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Mon Nov 03 17:58:49 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 1XlKxs-0002zG-VC for gcvg-git-2@plane.gmane.org; Mon, 03 Nov 2014 17:58:49 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753473AbaKCQ6i (ORCPT ); Mon, 3 Nov 2014 11:58:38 -0500 Received: from mail-pd0-f201.google.com ([209.85.192.201]:57102 "EHLO mail-pd0-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753320AbaKCQ4F (ORCPT ); Mon, 3 Nov 2014 11:56:05 -0500 Received: by mail-pd0-f201.google.com with SMTP id r10so1935910pdi.0 for ; Mon, 03 Nov 2014 08:56:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=/JLk7bSXazdbtjot1WsAFAqlcihHaEB9y1mDp0pyAzA=; b=VRRRrFjKLdD0j1mDiaroQvL1WgAxpenr9zKZ1277NRG5PH5CM0TFsgVWVcTy4IA0ga O5Iv4nFP8u4ydd/JPBiq+aSfmcuJeAzijfQcG4qHqnjXsw6JimRLW9FGKs2ezo+Y1jg6 IXYpFFGEmwuvBWTcIlTBlrnZxsEnKcdsJkan+4mYbPfdq/HGnFRkAeTbrHeJ4EuI4+bx Yyx2zdII6EX6J+IRkYRZXJo9naH6OWa4w0mIZd2jeCPW7OeG/FOiXmms6uVD3v933ocx azYvOkDlMCoxXhl7yg0ocE8T4d1MXbj4UL0qI9Cu0j0z6wEujyUS/clGGclcPowe3haz HKSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=/JLk7bSXazdbtjot1WsAFAqlcihHaEB9y1mDp0pyAzA=; b=QqUUsIIG8nXbIqO+bXhRBs+AZnMVaE2X53ewdJanc7IAFEizM5jtuN+HvF+xbSgs3r 8JxAwDf5tRaXzWVCAzSoYMsXjRBLEneXW5uVsY1EA15qnsveKNLiwifXHmNXJdbziidb NKxFPEYTQGf6givkh/kyQ8H+lSK3qh15s4eeHIhujSjprVubV4AMyAMRPxkqkQz0hrum tc7GnD6tlfqyEKgyk2jh+tYq+QI4v+ARpNBqjPlb9agaxFQevoUSSvPtDpc3R4FnHTp3 z1KH7nmvssHOBS3rpzi+bXfqVEZv44swo6VMnLwZ24lTygB98ThRHSb8vMqddUYJ4XIt DjYg== X-Gm-Message-State: ALoCoQkY4m5nMDUBbQCh/2B8eRcUO6xzsig6mh6Ja//6X3viFC/euZCOvn16Oke1KS9HFOfo6BDT X-Received: by 10.66.142.106 with SMTP id rv10mr32987026pab.21.1415033764390; Mon, 03 Nov 2014 08:56:04 -0800 (PST) Received: from corpmail-nozzle1-1.hot.corp.google.com ([100.108.1.104]) by gmr-mx.google.com with ESMTPS id s23si959288yhf.0.2014.11.03.08.56.03 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 03 Nov 2014 08:56:04 -0800 (PST) Received: from sahlberg1.mtv.corp.google.com ([172.27.69.52]) by corpmail-nozzle1-1.hot.corp.google.com with ESMTP id fsY9xOy7.2; Mon, 03 Nov 2014 08:56:04 -0800 Received: by sahlberg1.mtv.corp.google.com (Postfix, from userid 177442) id C0688E0D1C; Mon, 3 Nov 2014 08:56:02 -0800 (PST) X-Mailer: git-send-email 2.1.2.785.g8f5823f In-Reply-To: <1415033757-9539-1-git-send-email-sahlberg@google.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org log_ref_setup is used to do several semi-related things : * sometimes it will create a new reflog including missing parent directories and cleaning up any conflicting stale directories in the path. * fill in a filename buffer for the full path to the reflog. * unconditionally re-adjust the permissions for the file. This function is only called from two places: checkout.c where it is always used to create a reflog and refs.c:log_ref_write where it sometimes are used to create a reflog and sometimes just used to fill in the filename. Rename log_ref_setup to create_reflog and change it to only take the refname as argument to make its signature similar to delete_reflog and reflog_exists. Change create_reflog to ignore log_all_ref_updates and "unconditionally" create the reflog when called. Since checkout.c always wants to create a reflog we can call create_reflog directly and avoid the temp-and-log_all_ref_update dance. In log_ref_write, only call create_reflog iff we want to create a reflog and if the reflog does not yet exist. This means that for the common case where the log already exists we now only need to perform a single lstat() instead of a open(O_CREAT)+lstat()+close(). Signed-off-by: Ronnie Sahlberg Signed-off-by: Jonathan Nieder --- builtin/checkout.c | 8 +------- refs.c | 22 +++++++++++++--------- refs.h | 8 +++----- 3 files changed, 17 insertions(+), 21 deletions(-) diff --git a/builtin/checkout.c b/builtin/checkout.c index 5410dac..8550b6d 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -587,19 +587,13 @@ static void update_refs_for_switch(const struct checkout_opts *opts, if (opts->new_branch) { if (opts->new_orphan_branch) { if (opts->new_branch_log && !log_all_ref_updates) { - int temp; - char log_file[PATH_MAX]; char *ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch); - temp = log_all_ref_updates; - log_all_ref_updates = 1; - if (log_ref_setup(ref_name, log_file, sizeof(log_file))) { + if (create_reflog(ref_name)) { fprintf(stderr, _("Can not do reflog for '%s'\n"), opts->new_orphan_branch); - log_all_ref_updates = temp; return; } - log_all_ref_updates = temp; } } else diff --git a/refs.c b/refs.c index a4bdfaf..0b46bd9 100644 --- a/refs.c +++ b/refs.c @@ -2947,16 +2947,16 @@ static int copy_msg(char *buf, const char *msg) } /* This function must set a meaningful errno on failure */ -int log_ref_setup(const char *refname, char *logfile, int bufsize) +int create_reflog(const char *refname) { int logfd, oflags = O_APPEND | O_WRONLY; + char logfile[PATH_MAX]; - git_snpath(logfile, bufsize, "logs/%s", refname); - if (log_all_ref_updates && - (starts_with(refname, "refs/heads/") || - starts_with(refname, "refs/remotes/") || - starts_with(refname, "refs/notes/") || - !strcmp(refname, "HEAD"))) { + git_snpath(logfile, sizeof(logfile), "logs/%s", refname); + if (starts_with(refname, "refs/heads/") || + starts_with(refname, "refs/remotes/") || + starts_with(refname, "refs/notes/") || + !strcmp(refname, "HEAD")) { if (safe_create_leading_directories(logfile) < 0) { int save_errno = errno; error("unable to create directory for %s", logfile); @@ -3025,16 +3025,20 @@ static int log_ref_write_fd(int fd, const unsigned char *old_sha1, static int log_ref_write(const char *refname, const unsigned char *old_sha1, const unsigned char *new_sha1, const char *msg) { - int logfd, result, oflags = O_APPEND | O_WRONLY; + int logfd, result = 0, oflags = O_APPEND | O_WRONLY; char log_file[PATH_MAX]; if (log_all_ref_updates < 0) log_all_ref_updates = !is_bare_repository(); - result = log_ref_setup(refname, log_file, sizeof(log_file)); + if (log_all_ref_updates && !reflog_exists(refname)) + result = create_reflog(refname); + if (result) return result; + git_snpath(log_file, sizeof(log_file), "logs/%s", refname); + logfd = open(log_file, oflags); if (logfd < 0) return 0; diff --git a/refs.h b/refs.h index 9f70b89..17e3a3c 100644 --- a/refs.h +++ b/refs.h @@ -207,11 +207,6 @@ extern int commit_ref(struct ref_lock *lock); /** Release any lock taken but not written. **/ extern void unlock_ref(struct ref_lock *lock); -/* - * Setup reflog before using. Set errno to something meaningful on failure. - */ -int log_ref_setup(const char *refname, char *logfile, int bufsize); - /** Reads log for the value of ref during at_time. **/ extern int read_ref_at(const char *refname, unsigned int flags, unsigned long at_time, int cnt, @@ -221,6 +216,9 @@ extern int read_ref_at(const char *refname, unsigned int flags, /** Check if a particular reflog exists */ extern int reflog_exists(const char *refname); +/** Create reflog. Set errno to something meaningful on failure. */ +extern int create_reflog(const char *refname); + /** Delete a reflog */ extern int delete_reflog(const char *refname); -- 2.1.0.rc2.206.gedb03e5