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From 2941ddd836bf42d62efd4488626673ab8ec33b03 Mon Sep 17 00:00:00 2001
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Message-Id: <2941ddd836bf42d62efd4488626673ab8ec33b03@dist-git>
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From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
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Date: Fri, 6 Jul 2018 15:47:00 +0100
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Subject: [PATCH] qemu: consolidate parameters of qemuBuildChrChardevStr into
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 flags
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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https://bugzilla.redhat.com/show_bug.cgi?id=1597940
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There are two boolean parameters passed to qemuBuildChrChardevStr,
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and soon there will be a third. It will be clearer to understand
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from callers' POV if we use named flags instead.
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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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(cherry picked from commit 0140d4c59b7fb26432b520bb7e85bd6834f560b0)
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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 src/qemu/qemu_command.c | 94 ++++++++++++++++++++++++++---------------
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 1 file changed, 61 insertions(+), 33 deletions(-)
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diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
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index 41050bfea3..0c3ce98caf 100644
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--- a/src/qemu/qemu_command.c
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+++ b/src/qemu/qemu_command.c
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@@ -4934,6 +4934,12 @@ qemuOpenChrChardevUNIXSocket(const virDomainChrSourceDef *dev)
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     return -1;
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 }
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+
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+enum {
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+    QEMU_BUILD_CHARDEV_TCP_NOWAIT = (1 << 0),
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+    QEMU_BUILD_CHARDEV_FILE_LOGD  = (1 << 1),
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+};
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+
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 /* This function outputs a -chardev command line option which describes only the
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  * host side of the character device */
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 static char *
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@@ -4945,8 +4951,7 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
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                        const virDomainChrSourceDef *dev,
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                        const char *alias,
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                        virQEMUCapsPtr qemuCaps,
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-                       bool nowait,
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-                       bool chardevStdioLogd)
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+                       unsigned int flags)
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 {
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     virBuffer buf = VIR_BUFFER_INITIALIZER;
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     bool telnet;
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@@ -4985,7 +4990,8 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
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                            _("append not supported in this QEMU binary"));
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             goto cleanup;
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         }
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-        if (qemuBuildChrChardevFileStr(chardevStdioLogd ? logManager : NULL,
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+        if (qemuBuildChrChardevFileStr(flags & QEMU_BUILD_CHARDEV_FILE_LOGD ?
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+                                       logManager : NULL,
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                                        cmd, def, &buf,
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                                        "path", dev->data.file.path,
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                                        "append", dev->data.file.append) < 0)
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@@ -5031,8 +5037,11 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
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                           dev->data.tcp.service,
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                           telnet ? ",telnet" : "");
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-        if (dev->data.tcp.listen)
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-            virBufferAdd(&buf, nowait ? ",server,nowait" : ",server", -1);
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+        if (dev->data.tcp.listen) {
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+            virBufferAddLit(&buf, ",server");
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+            if (flags & QEMU_BUILD_CHARDEV_TCP_NOWAIT)
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+                virBufferAddLit(&buf, ",nowait");
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+        }
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         qemuBuildChrChardevReconnectStr(&buf, &dev->data.tcp.reconnect);
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@@ -5090,8 +5099,11 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
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             virBufferAsprintf(&buf, "socket,id=%s,path=", charAlias);
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             virQEMUBuildBufferEscapeComma(&buf, dev->data.nix.path);
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         }
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-        if (dev->data.nix.listen)
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-            virBufferAdd(&buf, nowait ? ",server,nowait" : ",server", -1);
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+        if (dev->data.nix.listen) {
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+            virBufferAddLit(&buf, ",server");
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+            if (flags & QEMU_BUILD_CHARDEV_TCP_NOWAIT)
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+                virBufferAddLit(&buf, ",nowait");
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+        }
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         qemuBuildChrChardevReconnectStr(&buf, &dev->data.nix.reconnect);
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         break;
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@@ -5425,6 +5437,9 @@ qemuBuildMonitorCommandLine(virLogManagerPtr logManager,
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                             qemuDomainObjPrivatePtr priv)
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 {
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     char *chrdev;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (priv->chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     if (!priv->monConfig)
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         return 0;
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@@ -5432,8 +5447,7 @@ qemuBuildMonitorCommandLine(virLogManagerPtr logManager,
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     if (!(chrdev = qemuBuildChrChardevStr(logManager, secManager,
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                                           cmd, cfg, def,
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                                           priv->monConfig, "monitor",
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-                                          priv->qemuCaps, true,
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-                                          priv->chardevStdioLogd)))
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+                                          priv->qemuCaps, cdevflags)))
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         return -1;
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     virCommandAddArg(cmd, "-chardev");
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     virCommandAddArg(cmd, chrdev);
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@@ -5558,6 +5572,9 @@ qemuBuildRNGBackendChrdevStr(virLogManagerPtr logManager,
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                              char **chr,
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                              bool chardevStdioLogd)
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 {
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     *chr = NULL;
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     switch ((virDomainRNGBackend) rng->backend) {
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@@ -5570,8 +5587,8 @@ qemuBuildRNGBackendChrdevStr(virLogManagerPtr logManager,
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         if (!(*chr = qemuBuildChrChardevStr(logManager, secManager,
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                                             cmd, cfg, def,
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                                             rng->source.chardev,
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-                                            rng->info.alias, qemuCaps, true,
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-                                            chardevStdioLogd)))
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+                                            rng->info.alias, qemuCaps,
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+                                            cdevflags)))
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             return -1;
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     }
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@@ -8243,8 +8260,7 @@ qemuBuildVhostuserCommandLine(virQEMUDriverPtr driver,
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         if (!(chardev = qemuBuildChrChardevStr(logManager, secManager,
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                                                cmd, cfg, def,
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                                                net->data.vhostuser,
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-                                               net->info.alias, qemuCaps, false,
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-                                               false)))
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+                                               net->info.alias, qemuCaps, 0)))
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             goto cleanup;
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         break;
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@@ -8724,6 +8740,9 @@ qemuBuildSmartcardCommandLine(virLogManagerPtr logManager,
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     virBuffer opt = VIR_BUFFER_INITIALIZER;
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     const char *database;
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     const char *contAlias = NULL;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     if (!def->nsmartcards)
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         return 0;
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@@ -8789,8 +8808,7 @@ qemuBuildSmartcardCommandLine(virLogManagerPtr logManager,
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                                               cmd, cfg, def,
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                                               smartcard->data.passthru,
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                                               smartcard->info.alias,
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-                                              qemuCaps, true,
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-                                              chardevStdioLogd))) {
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+                                              qemuCaps, cdevflags))) {
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             virBufferFreeAndReset(&opt;;
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             return -1;
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         }
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@@ -8958,6 +8976,9 @@ qemuBuildShmemCommandLine(virLogManagerPtr logManager,
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     virBuffer buf = VIR_BUFFER_INITIALIZER;
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     char *devstr = NULL;
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     int rc;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     if (shmem->size) {
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         /*
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@@ -9021,8 +9042,8 @@ qemuBuildShmemCommandLine(virLogManagerPtr logManager,
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         devstr = qemuBuildChrChardevStr(logManager, secManager,
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                                         cmd, cfg, def,
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                                         &shmem->server.chr,
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-                                        shmem->info.alias, qemuCaps, true,
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-                                        chardevStdioLogd);
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+                                        shmem->info.alias, qemuCaps,
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+                                        cdevflags);
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         if (!devstr)
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             return -1;
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@@ -9115,6 +9136,9 @@ qemuBuildSerialCommandLine(virLogManagerPtr logManager,
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 {
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     size_t i;
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     bool havespice = false;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     if (def->nserials) {
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         for (i = 0; i < def->ngraphics && !havespice; i++) {
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@@ -9134,8 +9158,7 @@ qemuBuildSerialCommandLine(virLogManagerPtr logManager,
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                                               cmd, cfg, def,
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                                               serial->source,
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                                               serial->info.alias,
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-                                              qemuCaps, true,
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-                                              chardevStdioLogd)))
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+                                              qemuCaps, cdevflags)))
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             return -1;
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         virCommandAddArg(cmd, "-chardev");
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         virCommandAddArg(cmd, devstr);
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@@ -9176,6 +9199,9 @@ qemuBuildParallelsCommandLine(virLogManagerPtr logManager,
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                               bool chardevStdioLogd)
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 {
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     size_t i;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     for (i = 0; i < def->nparallels; i++) {
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         virDomainChrDefPtr parallel = def->parallels[i];
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@@ -9185,8 +9211,7 @@ qemuBuildParallelsCommandLine(virLogManagerPtr logManager,
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                                               cmd, cfg, def,
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                                               parallel->source,
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                                               parallel->info.alias,
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-                                              qemuCaps, true,
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-                                              chardevStdioLogd)))
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+                                              qemuCaps, cdevflags)))
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             return -1;
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         virCommandAddArg(cmd, "-chardev");
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         virCommandAddArg(cmd, devstr);
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@@ -9211,6 +9236,9 @@ qemuBuildChannelsCommandLine(virLogManagerPtr logManager,
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                              bool chardevStdioLogd)
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 {
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     size_t i;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     for (i = 0; i < def->nchannels; i++) {
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         virDomainChrDefPtr channel = def->channels[i];
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@@ -9222,8 +9250,7 @@ qemuBuildChannelsCommandLine(virLogManagerPtr logManager,
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                                                   cmd, cfg, def,
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                                                   channel->source,
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                                                   channel->info.alias,
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-                                                  qemuCaps, true,
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-                                                  chardevStdioLogd)))
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+                                                  qemuCaps, cdevflags)))
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                 return -1;
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             virCommandAddArg(cmd, "-chardev");
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             virCommandAddArg(cmd, devstr);
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@@ -9240,8 +9267,7 @@ qemuBuildChannelsCommandLine(virLogManagerPtr logManager,
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                                                   cmd, cfg, def,
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                                                   channel->source,
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                                                   channel->info.alias,
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-                                                  qemuCaps, true,
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-                                                  chardevStdioLogd)))
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+                                                  qemuCaps, cdevflags)))
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                 return -1;
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             virCommandAddArg(cmd, "-chardev");
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             virCommandAddArg(cmd, devstr);
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@@ -9267,6 +9293,9 @@ qemuBuildConsoleCommandLine(virLogManagerPtr logManager,
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                             bool chardevStdioLogd)
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 {
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     size_t i;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     /* Explicit console devices */
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     for (i = 0; i < def->nconsoles; i++) {
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@@ -9285,8 +9314,7 @@ qemuBuildConsoleCommandLine(virLogManagerPtr logManager,
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                                                   cmd, cfg, def,
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                                                   console->source,
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                                                   console->info.alias,
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-                                                  qemuCaps, true,
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-                                                  chardevStdioLogd)))
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+                                                  qemuCaps, cdevflags)))
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                 return -1;
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             virCommandAddArg(cmd, "-chardev");
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             virCommandAddArg(cmd, devstr);
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@@ -9307,8 +9335,7 @@ qemuBuildConsoleCommandLine(virLogManagerPtr logManager,
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                                                   cmd, cfg, def,
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                                                   console->source,
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                                                   console->info.alias,
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-                                                  qemuCaps, true,
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-                                                  chardevStdioLogd)))
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+                                                  qemuCaps, cdevflags)))
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                 return -1;
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             virCommandAddArg(cmd, "-chardev");
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             virCommandAddArg(cmd, devstr);
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@@ -9323,8 +9350,7 @@ qemuBuildConsoleCommandLine(virLogManagerPtr logManager,
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                                                   cmd, cfg, def,
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                                                   console->source,
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                                                   console->info.alias,
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-                                                  qemuCaps, true,
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-                                                  chardevStdioLogd)))
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+                                                  qemuCaps, cdevflags)))
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                 return -1;
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             virCommandAddArg(cmd, "-chardev");
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             virCommandAddArg(cmd, devstr);
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@@ -9447,6 +9473,9 @@ qemuBuildRedirdevCommandLine(virLogManagerPtr logManager,
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                              bool chardevStdioLogd)
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 {
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     size_t i;
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+    unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+    if (chardevStdioLogd)
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+        cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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     for (i = 0; i < def->nredirdevs; i++) {
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         virDomainRedirdevDefPtr redirdev = def->redirdevs[i];
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@@ -9456,8 +9485,7 @@ qemuBuildRedirdevCommandLine(virLogManagerPtr logManager,
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                                               cmd, cfg, def,
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                                               redirdev->source,
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                                               redirdev->info.alias,
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-                                              qemuCaps, true,
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-                                              chardevStdioLogd))) {
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+                                              qemuCaps, cdevflags))) {
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             return -1;
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         }
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-- 
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2.18.0
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