<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>[138165] trunk/base/src</title>
</head>
<body>
<style type="text/css"><!--
#msg dl.meta { border: 1px #006 solid; background: #369; padding: 6px; color: #fff; }
#msg dl.meta dt { float: left; width: 6em; font-weight: bold; }
#msg dt:after { content:':';}
#msg dl, #msg dt, #msg ul, #msg li, #header, #footer, #logmsg { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; }
#msg dl a { font-weight: bold}
#msg dl a:link { color:#fc3; }
#msg dl a:active { color:#ff0; }
#msg dl a:visited { color:#cc6; }
h3 { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; font-weight: bold; }
#msg pre { overflow: auto; background: #ffc; border: 1px #fa0 solid; padding: 6px; }
#logmsg { background: #ffc; border: 1px #fa0 solid; padding: 1em 1em 0 1em; }
#logmsg p, #logmsg pre, #logmsg blockquote { margin: 0 0 1em 0; }
#logmsg p, #logmsg li, #logmsg dt, #logmsg dd { line-height: 14pt; }
#logmsg h1, #logmsg h2, #logmsg h3, #logmsg h4, #logmsg h5, #logmsg h6 { margin: .5em 0; }
#logmsg h1:first-child, #logmsg h2:first-child, #logmsg h3:first-child, #logmsg h4:first-child, #logmsg h5:first-child, #logmsg h6:first-child { margin-top: 0; }
#logmsg ul, #logmsg ol { padding: 0; list-style-position: inside; margin: 0 0 0 1em; }
#logmsg ul { text-indent: -1em; padding-left: 1em; }#logmsg ol { text-indent: -1.5em; padding-left: 1.5em; }
#logmsg > ul, #logmsg > ol { margin: 0 0 1em 0; }
#logmsg pre { background: #eee; padding: 1em; }
#logmsg blockquote { border: 1px solid #fa0; border-left-width: 10px; padding: 1em 1em 0 1em; background: white;}
#logmsg dl { margin: 0; }
#logmsg dt { font-weight: bold; }
#logmsg dd { margin: 0; padding: 0 0 0.5em 0; }
#logmsg dd:before { content:'\00bb';}
#logmsg table { border-spacing: 0px; border-collapse: collapse; border-top: 4px solid #fa0; border-bottom: 1px solid #fa0; background: #fff; }
#logmsg table th { text-align: left; font-weight: normal; padding: 0.2em 0.5em; border-top: 1px dotted #fa0; }
#logmsg table td { text-align: right; border-top: 1px dotted #fa0; padding: 0.2em 0.5em; }
#logmsg table thead th { text-align: center; border-bottom: 1px solid #fa0; }
#logmsg table th.Corner { text-align: left; }
#logmsg hr { border: none 0; border-top: 2px dashed #fa0; height: 1px; }
#header, #footer { color: #fff; background: #636; border: 1px #300 solid; padding: 6px; }
#patch { width: 100%; }
#patch h4 {font-family: verdana,arial,helvetica,sans-serif;font-size:10pt;padding:8px;background:#369;color:#fff;margin:0;}
#patch .propset h4, #patch .binary h4 {margin:0;}
#patch pre {padding:0;line-height:1.2em;margin:0;}
#patch .diff {width:100%;background:#eee;padding: 0 0 10px 0;overflow:auto;}
#patch .propset .diff, #patch .binary .diff {padding:10px 0;}
#patch span {display:block;padding:0 10px;}
#patch .modfile, #patch .addfile, #patch .delfile, #patch .propset, #patch .binary, #patch .copfile {border:1px solid #ccc;margin:10px 0;}
#patch ins {background:#dfd;text-decoration:none;display:block;padding:0 10px;}
#patch del {background:#fdd;text-decoration:none;display:block;padding:0 10px;}
#patch .lines, .info {color:#888;background:#fff;}
--></style>
<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="https://trac.macports.org/changeset/138165">138165</a></dd>
<dt>Author</dt> <dd>cal@macports.org</dd>
<dt>Date</dt> <dd>2015-06-30 13:58:44 -0700 (Tue, 30 Jun 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>base: rename pextlib flock to adv-flock to avoid conflict with TclX, closes #46733
This has come up a few times and is somehow related to the order in which the
packages are loaded, but I haven't been able to pinpoint why exactly the order
varies.
Let's avoid wasting any time on the dirty details and just rename our own
implementation. The new name is "adv-flock" for "advisory file lock".</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkbasesrcpextlib10Makefilein">trunk/base/src/pextlib1.0/Makefile.in</a></li>
<li><a href="#trunkbasesrcpextlib10Pextlibc">trunk/base/src/pextlib1.0/Pextlib.c</a></li>
<li><a href="#trunkbasesrcport10portutiltcl">trunk/base/src/port1.0/portutil.tcl</a></li>
<li><a href="#trunkbasesrcregistry20registrytcl">trunk/base/src/registry2.0/registry.tcl</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkbasesrcpextlib10advflockc">trunk/base/src/pextlib1.0/adv-flock.c</a></li>
<li><a href="#trunkbasesrcpextlib10advflockh">trunk/base/src/pextlib1.0/adv-flock.h</a></li>
</ul>
<h3>Removed Paths</h3>
<ul>
<li><a href="#trunkbasesrcpextlib10flockc">trunk/base/src/pextlib1.0/flock.c</a></li>
<li><a href="#trunkbasesrcpextlib10flockh">trunk/base/src/pextlib1.0/flock.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkbasesrcpextlib10Makefilein"></a>
<div class="modfile"><h4>Modified: trunk/base/src/pextlib1.0/Makefile.in (138164 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/pextlib1.0/Makefile.in 2015-06-30 20:47:25 UTC (rev 138164)
+++ trunk/base/src/pextlib1.0/Makefile.in 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -7,7 +7,7 @@
</span><span class="cx"> Pextlib.o strsed.o fgetln.o md5cmd.o setmode.o xinstall.o \
</span><span class="cx"> fs-traverse.o strcasecmp.o vercomp.o filemap.o base32cmd.o \
</span><span class="cx"> sha1cmd.o curl.o rmd160cmd.o sha256cmd.o readline.o uid.o \
</span><del>- tracelib.o tty.o readdir.o pipe.o flock.o system.o \
</del><ins>+ tracelib.o tty.o readdir.o pipe.o adv-flock.o system.o \
</ins><span class="cx"> mktemp.o realpath.o
</span><span class="cx"> ifneq (@ac_cv_func_strlcat@,yes)
</span><span class="cx"> OBJS+=strlcat.o
</span></span></pre></div>
<a id="trunkbasesrcpextlib10Pextlibc"></a>
<div class="modfile"><h4>Modified: trunk/base/src/pextlib1.0/Pextlib.c (138164 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/pextlib1.0/Pextlib.c 2015-06-30 20:47:25 UTC (rev 138164)
+++ trunk/base/src/pextlib1.0/Pextlib.c 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -89,7 +89,7 @@
</span><span class="cx"> #include "strsed.h"
</span><span class="cx"> #include "readdir.h"
</span><span class="cx"> #include "pipe.h"
</span><del>-#include "flock.h"
</del><ins>+#include "adv-flock.h"
</ins><span class="cx"> #include "system.h"
</span><span class="cx"> #include "mktemp.h"
</span><span class="cx"> #include "realpath.h"
</span><span class="lines">@@ -608,7 +608,7 @@
</span><span class="cx"> return TCL_ERROR;
</span><span class="cx">
</span><span class="cx"> Tcl_CreateObjCommand(interp, "system", SystemCmd, NULL, NULL);
</span><del>- Tcl_CreateObjCommand(interp, "flock", FlockCmd, NULL, NULL);
</del><ins>+ Tcl_CreateObjCommand(interp, "adv-flock", AdvFlockCmd, NULL, NULL);
</ins><span class="cx"> Tcl_CreateObjCommand(interp, "readdir", ReaddirCmd, NULL, NULL);
</span><span class="cx"> Tcl_CreateObjCommand(interp, "strsed", StrsedCmd, NULL, NULL);
</span><span class="cx"> Tcl_CreateObjCommand(interp, "mkstemp", MkstempCmd, NULL, NULL);
</span></span></pre></div>
<a id="trunkbasesrcpextlib10advflockcfromrev138164trunkbasesrcpextlib10flockc"></a>
<div class="copfile"><h4>Copied: trunk/base/src/pextlib1.0/adv-flock.c (from rev 138164, trunk/base/src/pextlib1.0/flock.c) (0 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/pextlib1.0/adv-flock.c (rev 0)
+++ trunk/base/src/pextlib1.0/adv-flock.c 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -0,0 +1,256 @@
</span><ins>+/*
+ * adv-flock.c
+ * $Id$
+ *
+ * Copyright (c) 2009 The MacPorts Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of The MacPorts Project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/* needed to get struct sigaction on some platforms */
+#define _XOPEN_SOURCE 500L
+/* the above hides flock on OS X without _DARWIN_C_SOURCE */
+#define _DARWIN_C_SOURCE
+
+#if HAVE_SYS_FILE_H
+#include <sys/file.h>
+#endif
+
+#include <errno.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <tcl.h>
+
+#include "adv-flock.h"
+
+static volatile int alarmReceived = 0;
+
+static void alarmHandler(int sig UNUSED) {
+ alarmReceived = 1;
+}
+
+int
+AdvFlockCmd(ClientData clientData UNUSED, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) {
+ static const char errorstr[] = "use one of \"-shared\", \"-exclusive\", or \"-unlock\", and optionally \"-noblock\"";
+ int operation = 0, fd, i, ret, sigret = TCL_OK;
+ int errnoval = 0;
+ int oshared = 0, oexclusive = 0, ounlock = 0, onoblock = 0, retry = 0;
+#if defined(HAVE_LOCKF) && !defined(HAVE_FLOCK)
+ off_t curpos;
+#endif
+ char *res;
+ Tcl_Channel channel;
+ ClientData handle;
+ struct sigaction sa_oldalarm, sa_alarm;
+
+ if (objc < 3 || objc > 4) {
+ Tcl_WrongNumArgs(interp, 1, objv, "channelId switches");
+ return TCL_ERROR;
+ }
+
+ if ((channel = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL)) == NULL) {
+ Tcl_SetResult(interp, "error getting channel, result was NULL", TCL_STATIC);
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetChannelHandle(channel, TCL_READABLE | TCL_WRITABLE, &handle) != TCL_OK) {
+ Tcl_SetResult(interp, "error getting channel handle", TCL_STATIC);
+ return TCL_ERROR;
+ }
+ fd = (int)(intptr_t)handle;
+
+ for (i = 2; i < objc; i++) {
+ char *arg = Tcl_GetString(objv[i]);
+ if (!strcmp(arg, "-shared")) {
+ oshared = 1;
+ }
+ else if (!strcmp(arg, "-exclusive")) {
+ oexclusive = 1;
+ }
+ else if (!strcmp(arg, "-unlock")) {
+ ounlock = 1;
+ }
+ else if (!strcmp(arg, "-noblock")) {
+ onoblock = 1;
+ }
+ }
+
+ /* verify the arguments */
+
+ if ((oshared + oexclusive + ounlock) != 1) {
+ /* only one of the options should have been specified */
+ Tcl_SetResult(interp, (void *) &errorstr, TCL_STATIC);
+ return TCL_ERROR;
+ }
+
+ if (onoblock && ounlock) {
+ /* should not be specified together */
+ Tcl_SetResult(interp, "-noblock cannot be used with -unlock", TCL_STATIC);
+ return TCL_ERROR;
+ }
+
+ /* (re-)enable SIGALRM so we can use alarm(3) to specify a timeout for the
+ * locking, do some Tcl signal processing and restart the locking to solve
+ * #43388. */
+ memset(&sa_alarm, 0, sizeof(struct sigaction));
+ sigemptyset(&sa_alarm.sa_mask);
+ sa_alarm.sa_flags = 0; /* explicitly don't specify SA_RESTART, we want the
+ following alarm(3) to interrupt the locking. */
+ sa_alarm.sa_handler = alarmHandler;
+ sigaction(SIGALRM, &sa_alarm, &sa_oldalarm);
+
+ do {
+ /* use a delay of one second */
+ retry = 0;
+ alarmReceived = 0;
+ alarm(1);
+#if HAVE_FLOCK
+ /* prefer flock if present */
+ if (oshared) {
+ operation |= LOCK_SH;
+ }
+
+ if (oexclusive) {
+ operation |= LOCK_EX;
+ }
+
+ if (ounlock) {
+ operation |= LOCK_UN;
+ }
+
+ if (onoblock) {
+ operation |= LOCK_NB;
+ }
+
+ ret = flock(fd, operation);
+ if (ret == -1) {
+ errnoval = errno;
+ }
+#else
+#if HAVE_LOCKF
+ if (ounlock) {
+ operation = F_ULOCK;
+ }
+
+ /* lockf semantics don't map to shared locks. */
+ if (oshared || oexclusive) {
+ if (onoblock) {
+ operation = F_TLOCK;
+ }
+ else {
+ operation = F_LOCK;
+ }
+ }
+
+ curpos = lseek(fd, 0, SEEK_CUR);
+ if (curpos == -1) {
+ Tcl_SetResult(interp, (void *) "Seek error", TCL_STATIC);
+ return TCL_ERROR;
+ }
+
+ ret = lockf(fd, operation, 0); /* lock entire file */
+ if (ret == -1) {
+ errnoval = errno;
+ }
+
+ curpos = lseek(fd, curpos, SEEK_SET);
+ if (curpos == -1) {
+ Tcl_SetResult(interp, (void *) "Seek error", TCL_STATIC);
+ return TCL_ERROR;
+ }
+#else
+#error no available locking implementation
+#endif /* HAVE_LOCKF */
+#endif /* HAVE_FLOCK */
+ /* disable the alarm timer */
+ alarm(0);
+
+ if (ret == -1) {
+ if (oshared || oexclusive) {
+ if (!onoblock && alarmReceived && errnoval == EINTR) {
+ /* We were trying to lock, the lock was supposed to block,
+ * it failed with EINTR and we processed a SIGALRM. This
+ * probably means the call was interrupted by the timer.
+ * Call Tcl signal processing functions and try again. */
+ if (Tcl_AsyncReady()) {
+ sigret = Tcl_AsyncInvoke(interp, TCL_OK);
+ if (sigret != TCL_OK) {
+ break;
+ }
+ }
+ retry = 1;
+ continue;
+ }
+
+ if (onoblock && errnoval == EAGAIN) {
+ /* The lock wasn't supposed to block, and the lock wasn't
+ * successful because the lock is taken. On some systems
+ * EAGAIN == EWOULDBLOCK, but let's play it safe. */
+ errnoval = EWOULDBLOCK;
+ }
+ }
+ }
+ } while (retry);
+
+ /* Restore the previous handler for SIGALRM */
+ sigaction(SIGALRM, &sa_oldalarm, NULL);
+
+ if (sigret != TCL_OK) {
+ /* We received a signal that raised an error. The file hasn't been
+ * locked. */
+ return sigret;
+ }
+
+ if (ret != 0) {
+ switch (errnoval) {
+ case EAGAIN:
+ res = "EAGAIN";
+ break;
+ case EBADF:
+ res = "EBADF";
+ break;
+ case EINVAL:
+ res = "EINVAL";
+ break;
+ case EOPNOTSUPP:
+ res = "EOPNOTSUPP";
+ break;
+ default:
+ res = strerror(errno);
+ break;
+ }
+ Tcl_SetResult(interp, (void *) res, TCL_STATIC);
+ return TCL_ERROR;
+ }
+ return TCL_OK;
+}
</ins></span></pre></div>
<a id="trunkbasesrcpextlib10advflockhfromrev137292trunkbasesrcpextlib10flockh"></a>
<div class="copfile"><h4>Copied: trunk/base/src/pextlib1.0/adv-flock.h (from rev 137292, trunk/base/src/pextlib1.0/flock.h) (0 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/pextlib1.0/adv-flock.h (rev 0)
+++ trunk/base/src/pextlib1.0/adv-flock.h 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -0,0 +1,33 @@
</span><ins>+/*
+ * adv-flock.h
+ * $Id$
+ *
+ * Copyright (c) 2009 The MacPorts Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of The MacPorts Project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+int AdvFlockCmd(ClientData, Tcl_Interp *, int, Tcl_Obj *CONST objv[]);
</ins></span></pre></div>
<a id="trunkbasesrcpextlib10flockc"></a>
<div class="delfile"><h4>Deleted: trunk/base/src/pextlib1.0/flock.c (138164 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/pextlib1.0/flock.c 2015-06-30 20:47:25 UTC (rev 138164)
+++ trunk/base/src/pextlib1.0/flock.c 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -1,256 +0,0 @@
</span><del>-/*
- * flock.c
- * $Id$
- *
- * Copyright (c) 2009 The MacPorts Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of The MacPorts Project nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#if HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-/* needed to get struct sigaction on some platforms */
-#define _XOPEN_SOURCE 500L
-/* the above hides flock on OS X without _DARWIN_C_SOURCE */
-#define _DARWIN_C_SOURCE
-
-#if HAVE_SYS_FILE_H
-#include <sys/file.h>
-#endif
-
-#include <errno.h>
-#include <inttypes.h>
-#include <signal.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <tcl.h>
-
-#include "flock.h"
-
-static volatile int alarmReceived = 0;
-
-static void alarmHandler(int sig UNUSED) {
- alarmReceived = 1;
-}
-
-int
-FlockCmd(ClientData clientData UNUSED, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) {
- static const char errorstr[] = "use one of \"-shared\", \"-exclusive\", or \"-unlock\", and optionally \"-noblock\"";
- int operation = 0, fd, i, ret, sigret = TCL_OK;
- int errnoval = 0;
- int oshared = 0, oexclusive = 0, ounlock = 0, onoblock = 0, retry = 0;
-#if defined(HAVE_LOCKF) && !defined(HAVE_FLOCK)
- off_t curpos;
-#endif
- char *res;
- Tcl_Channel channel;
- ClientData handle;
- struct sigaction sa_oldalarm, sa_alarm;
-
- if (objc < 3 || objc > 4) {
- Tcl_WrongNumArgs(interp, 1, objv, "channelId switches");
- return TCL_ERROR;
- }
-
- if ((channel = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL)) == NULL) {
- Tcl_SetResult(interp, "error getting channel, result was NULL", TCL_STATIC);
- return TCL_ERROR;
- }
-
- if (Tcl_GetChannelHandle(channel, TCL_READABLE | TCL_WRITABLE, &handle) != TCL_OK) {
- Tcl_SetResult(interp, "error getting channel handle", TCL_STATIC);
- return TCL_ERROR;
- }
- fd = (int)(intptr_t)handle;
-
- for (i = 2; i < objc; i++) {
- char *arg = Tcl_GetString(objv[i]);
- if (!strcmp(arg, "-shared")) {
- oshared = 1;
- }
- else if (!strcmp(arg, "-exclusive")) {
- oexclusive = 1;
- }
- else if (!strcmp(arg, "-unlock")) {
- ounlock = 1;
- }
- else if (!strcmp(arg, "-noblock")) {
- onoblock = 1;
- }
- }
-
- /* verify the arguments */
-
- if ((oshared + oexclusive + ounlock) != 1) {
- /* only one of the options should have been specified */
- Tcl_SetResult(interp, (void *) &errorstr, TCL_STATIC);
- return TCL_ERROR;
- }
-
- if (onoblock && ounlock) {
- /* should not be specified together */
- Tcl_SetResult(interp, "-noblock cannot be used with -unlock", TCL_STATIC);
- return TCL_ERROR;
- }
-
- /* (re-)enable SIGALRM so we can use alarm(3) to specify a timeout for the
- * locking, do some Tcl signal processing and restart the locking to solve
- * #43388. */
- memset(&sa_alarm, 0, sizeof(struct sigaction));
- sigemptyset(&sa_alarm.sa_mask);
- sa_alarm.sa_flags = 0; /* explicitly don't specify SA_RESTART, we want the
- following alarm(3) to interrupt the locking. */
- sa_alarm.sa_handler = alarmHandler;
- sigaction(SIGALRM, &sa_alarm, &sa_oldalarm);
-
- do {
- /* use a delay of one second */
- retry = 0;
- alarmReceived = 0;
- alarm(1);
-#if HAVE_FLOCK
- /* prefer flock if present */
- if (oshared) {
- operation |= LOCK_SH;
- }
-
- if (oexclusive) {
- operation |= LOCK_EX;
- }
-
- if (ounlock) {
- operation |= LOCK_UN;
- }
-
- if (onoblock) {
- operation |= LOCK_NB;
- }
-
- ret = flock(fd, operation);
- if (ret == -1) {
- errnoval = errno;
- }
-#else
-#if HAVE_LOCKF
- if (ounlock) {
- operation = F_ULOCK;
- }
-
- /* lockf semantics don't map to shared locks. */
- if (oshared || oexclusive) {
- if (onoblock) {
- operation = F_TLOCK;
- }
- else {
- operation = F_LOCK;
- }
- }
-
- curpos = lseek(fd, 0, SEEK_CUR);
- if (curpos == -1) {
- Tcl_SetResult(interp, (void *) "Seek error", TCL_STATIC);
- return TCL_ERROR;
- }
-
- ret = lockf(fd, operation, 0); /* lock entire file */
- if (ret == -1) {
- errnoval = errno;
- }
-
- curpos = lseek(fd, curpos, SEEK_SET);
- if (curpos == -1) {
- Tcl_SetResult(interp, (void *) "Seek error", TCL_STATIC);
- return TCL_ERROR;
- }
-#else
-#error no available locking implementation
-#endif /* HAVE_LOCKF */
-#endif /* HAVE_FLOCK */
- /* disable the alarm timer */
- alarm(0);
-
- if (ret == -1) {
- if (oshared || oexclusive) {
- if (!onoblock && alarmReceived && errnoval == EINTR) {
- /* We were trying to lock, the lock was supposed to block,
- * it failed with EINTR and we processed a SIGALRM. This
- * probably means the call was interrupted by the timer.
- * Call Tcl signal processing functions and try again. */
- if (Tcl_AsyncReady()) {
- sigret = Tcl_AsyncInvoke(interp, TCL_OK);
- if (sigret != TCL_OK) {
- break;
- }
- }
- retry = 1;
- continue;
- }
-
- if (onoblock && errnoval == EAGAIN) {
- /* The lock wasn't supposed to block, and the lock wasn't
- * successful because the lock is taken. On some systems
- * EAGAIN == EWOULDBLOCK, but let's play it safe. */
- errnoval = EWOULDBLOCK;
- }
- }
- }
- } while (retry);
-
- /* Restore the previous handler for SIGALRM */
- sigaction(SIGALRM, &sa_oldalarm, NULL);
-
- if (sigret != TCL_OK) {
- /* We received a signal that raised an error. The file hasn't been
- * locked. */
- return sigret;
- }
-
- if (ret != 0) {
- switch (errnoval) {
- case EAGAIN:
- res = "EAGAIN";
- break;
- case EBADF:
- res = "EBADF";
- break;
- case EINVAL:
- res = "EINVAL";
- break;
- case EOPNOTSUPP:
- res = "EOPNOTSUPP";
- break;
- default:
- res = strerror(errno);
- break;
- }
- Tcl_SetResult(interp, (void *) res, TCL_STATIC);
- return TCL_ERROR;
- }
- return TCL_OK;
-}
</del></span></pre></div>
<a id="trunkbasesrcpextlib10flockh"></a>
<div class="delfile"><h4>Deleted: trunk/base/src/pextlib1.0/flock.h (138164 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/pextlib1.0/flock.h 2015-06-30 20:47:25 UTC (rev 138164)
+++ trunk/base/src/pextlib1.0/flock.h 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -1,33 +0,0 @@
</span><del>-/*
- * flock.h
- * $Id$
- *
- * Copyright (c) 2009 The MacPorts Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of The MacPorts Project nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-int FlockCmd(ClientData, Tcl_Interp *, int, Tcl_Obj *CONST objv[]);
</del></span></pre></div>
<a id="trunkbasesrcport10portutiltcl"></a>
<div class="modfile"><h4>Modified: trunk/base/src/port1.0/portutil.tcl (138164 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/port1.0/portutil.tcl 2015-06-30 20:47:25 UTC (rev 138164)
+++ trunk/base/src/port1.0/portutil.tcl 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -1817,10 +1817,10 @@
</span><span class="cx">
</span><span class="cx"> set fd [open $statefile a+]
</span><span class="cx"> if {![tbool ports_dryrun]} {
</span><del>- if {[catch {flock $fd -exclusive -noblock} result]} {
</del><ins>+ if {[catch {adv-flock $fd -exclusive -noblock} result]} {
</ins><span class="cx"> if {"$result" == "EAGAIN"} {
</span><span class="cx"> ui_notice "Waiting for lock on $statefile"
</span><del>- flock $fd -exclusive
</del><ins>+ adv-flock $fd -exclusive
</ins><span class="cx"> } elseif {"$result" == "EOPNOTSUPP"} {
</span><span class="cx"> # Locking not supported, just return
</span><span class="cx"> return $fd
</span></span></pre></div>
<a id="trunkbasesrcregistry20registrytcl"></a>
<div class="modfile"><h4>Modified: trunk/base/src/registry2.0/registry.tcl (138164 => 138165)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/base/src/registry2.0/registry.tcl 2015-06-30 20:47:25 UTC (rev 138164)
+++ trunk/base/src/registry2.0/registry.tcl 2015-06-30 20:58:44 UTC (rev 138165)
</span><span class="lines">@@ -395,10 +395,10 @@
</span><span class="cx"> }
</span><span class="cx"> set lockfd [::open $lockpath w]
</span><span class="cx"> }
</span><del>- if {[catch {flock $lockfd -exclusive -noblock} result]} {
</del><ins>+ if {[catch {adv-flock $lockfd -exclusive -noblock} result]} {
</ins><span class="cx"> if {$result eq "EAGAIN"} {
</span><span class="cx"> ui_msg "Waiting for lock on $lockpath"
</span><del>- flock $lockfd -exclusive
</del><ins>+ adv-flock $lockfd -exclusive
</ins><span class="cx"> } elseif {$result eq "EOPNOTSUPP"} {
</span><span class="cx"> # Locking not supported, just return
</span><span class="cx"> ui_debug "flock not supported, not locking registry"
</span><span class="lines">@@ -420,7 +420,7 @@
</span><span class="cx"> }
</span><span class="cx"> if {[info exists lockfd]} {
</span><span class="cx"> # not much point trying to handle errors
</span><del>- catch {flock $lockfd -unlock}
</del><ins>+ catch {adv-flock $lockfd -unlock}
</ins><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre>
</div>
</div>
</body>
</html>