[libvirt] [PATCH] qemu: add virQEMUBuildBufferEscapeComma in qemu_command.c
Sukrit Bhatnagar
skrtbhtngr at gmail.com
Fri Mar 16 17:02:35 UTC 2018
This patch adds virQEMUBuildBufferEscapeComma wherever applicable in src/qemu/qemu_command.c
Based on: https://wiki.libvirt.org/page/BiteSizedTasks#qemu:_Use_comma_escaping_for_more_command_line_values
Signed-off-by: Sukrit Bhatnagar <skrtbhtngr at gmail.com>
---
This patch is submitted towards my proposal for GSoC'18.
Changes made:
- info->romfile in qemuBuildRomStr
- disk->vendor, disk->product in qemuBuildDriveDevStr
- fs->src->path in qemuBuildFSStr
- fs->dst in qemuBuildFSDevStr
- connect= in qemuBuildHostNetStr
- fileval handling in qemuBuildChrChardevStr
- TYPE_DEV, TYPE_PIPE handling in qemuBuildChrChardevStr
- cfg->vncTLSx509certdir in qemuBuildGraphicsVNCCommandLine
- cfg->spiceTLSx509certdir in qemuBuildGraphicsSPICECommandLine
- loader->path, loader->nvram usage qemuBuildDomainLoaderCommandLine
Places where no changes were made:
- src->hosts->socket in qemuBuildNetworkDriveURI uses virAsprintf not virBufferAsprintf; src->path, src->configFile are not used
- qemuBuildChrArgStr function does not exist
- not applicable on data.nix.path in qemuBuildVhostuserCommandLine
- converting places that use strchr in qemuBuildSmartcardCommandLine to use virBufferEscape
I have run `make check VIR_TEST_EXPENSIVE=1`, `make syntax-check` and `make -C tests valgrind`.
Some tests fail on my system, even for an unmodified clone of the repo.
But, all the tests which were passed by the unmodified clone were passed after I made these changes.
As always, your feedback is welcome!
src/qemu/qemu_command.c | 73 +++++++++++++++++++++++++++++--------------------
1 file changed, 44 insertions(+), 29 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index fa0aa5d5c..06f4f72fc 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -474,8 +474,10 @@ qemuBuildRomStr(virBufferPtr buf,
default:
break;
}
- if (info->romfile)
- virBufferAsprintf(buf, ",romfile=%s", info->romfile);
+ if (info->romfile) {
+ virBufferAddLit(buf, ",romfile=");
+ virQEMUBuildBufferEscapeComma(buf, info->romfile);
+ }
}
return 0;
}
@@ -2177,11 +2179,15 @@ qemuBuildDriveDevStr(const virDomainDef *def,
virBufferAsprintf(&opt, ",wwn=0x%s", disk->wwn);
}
- if (disk->vendor)
- virBufferAsprintf(&opt, ",vendor=%s", disk->vendor);
+ if (disk->vendor) {
+ virBufferAddLit(&opt, ",vendor=");
+ virQEMUBuildBufferEscapeComma(&opt, disk->vendor);
+ }
- if (disk->product)
- virBufferAsprintf(&opt, ",product=%s", disk->product);
+ if (disk->product) {
+ virBufferAddLit(&opt, ",product=");
+ virQEMUBuildBufferEscapeComma(&opt, disk->product);
+ }
if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) {
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_STORAGE_REMOVABLE)) {
@@ -2418,7 +2424,8 @@ qemuBuildFSStr(virDomainFSDefPtr fs,
}
virBufferAsprintf(&opt, ",id=%s%s", QEMU_FSDEV_HOST_PREFIX, fs->info.alias);
- virBufferAsprintf(&opt, ",path=%s", fs->src->path);
+ virBufferAddLit(&opt, ",path=");
+ virQEMUBuildBufferEscapeComma(&opt, fs->src->path);
if (fs->readonly) {
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_FSDEV_READONLY)) {
@@ -2463,7 +2470,8 @@ qemuBuildFSDevStr(const virDomainDef *def,
virBufferAsprintf(&opt, ",id=%s", fs->info.alias);
virBufferAsprintf(&opt, ",fsdev=%s%s",
QEMU_FSDEV_HOST_PREFIX, fs->info.alias);
- virBufferAsprintf(&opt, ",mount_tag=%s", fs->dst);
+ virBufferAddLit(&opt, ",mount_tag=");
+ virQEMUBuildBufferEscapeComma(&opt, fs->dst);
if (qemuBuildVirtioOptionsStr(&opt, fs->virtio, qemuCaps) < 0)
goto error;
@@ -3603,10 +3611,9 @@ qemuBuildHostNetStr(virDomainNetDefPtr net,
break;
case VIR_DOMAIN_NET_TYPE_CLIENT:
- virBufferAsprintf(&buf, "socket%cconnect=%s:%d,",
- type_sep,
- net->data.socket.address,
- net->data.socket.port);
+ virBufferAsprintf(&buf, "socket%cconnect=", type_sep);
+ virQEMUBuildBufferEscapeComma(&buf, net->data.socket.address);
+ virBufferAsprintf(&buf, ":%d,", net->data.socket.port);
break;
case VIR_DOMAIN_NET_TYPE_SERVER:
@@ -4858,7 +4865,8 @@ qemuBuildChrChardevFileStr(virLogManagerPtr logManager,
virBufferAsprintf(buf, ",%s=%s,%s=on", filearg, fdpath, appendarg);
VIR_FREE(fdpath);
} else {
- virBufferAsprintf(buf, ",%s=%s", filearg, fileval);
+ virBufferAsprintf(buf, ",%s=", filearg);
+ virQEMUBuildBufferEscapeComma(buf, fileval);
if (appendval != VIR_TRISTATE_SWITCH_ABSENT) {
virBufferAsprintf(buf, ",%s=%s", appendarg,
virTristateSwitchTypeToString(appendval));
@@ -4916,9 +4924,10 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
break;
case VIR_DOMAIN_CHR_TYPE_DEV:
- virBufferAsprintf(&buf, "%s,id=%s,path=%s",
+ virBufferAsprintf(&buf, "%s,id=%s,path=",
STRPREFIX(alias, "parallel") ? "parport" : "tty",
- charAlias, dev->data.file.path);
+ charAlias);
+ virQEMUBuildBufferEscapeComma(&buf, dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_FILE:
@@ -4938,8 +4947,8 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
- virBufferAsprintf(&buf, "pipe,id=%s,path=%s", charAlias,
- dev->data.file.path);
+ virBufferAsprintf(&buf, "pipe,id=%s,path=", charAlias);
+ virQEMUBuildBufferEscapeComma(&buf, dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_STDIO:
@@ -7829,10 +7838,13 @@ qemuBuildGraphicsVNCCommandLine(virQEMUDriverConfigPtr cfg,
if (cfg->vncTLS) {
virBufferAddLit(&opt, ",tls");
- if (cfg->vncTLSx509verify)
- virBufferAsprintf(&opt, ",x509verify=%s", cfg->vncTLSx509certdir);
- else
- virBufferAsprintf(&opt, ",x509=%s", cfg->vncTLSx509certdir);
+ if (cfg->vncTLSx509verify) {
+ virBufferAddLit(&opt, ",x509verify=");
+ virQEMUBuildBufferEscapeComma(&opt, cfg->vncTLSx509certdir);
+ } else {
+ virBufferAddLit(&opt, ",x509=");
+ virQEMUBuildBufferEscapeComma(&opt, cfg->vncTLSx509certdir);
+ }
}
if (cfg->vncSASL) {
@@ -7977,8 +7989,11 @@ qemuBuildGraphicsSPICECommandLine(virQEMUDriverConfigPtr cfg,
!cfg->spicePassword)
virBufferAddLit(&opt, "disable-ticketing,");
- if (hasSecure)
- virBufferAsprintf(&opt, "x509-dir=%s,", cfg->spiceTLSx509certdir);
+ if (hasSecure) {
+ virBufferAddLit(&opt, "x509-dir=");
+ virQEMUBuildBufferEscapeComma(&opt, cfg->spiceTLSx509certdir);
+ virBufferAddLit(&opt, ",");
+ }
switch (graphics->data.spice.defaultMode) {
case VIR_DOMAIN_GRAPHICS_SPICE_CHANNEL_MODE_SECURE:
@@ -9463,9 +9478,9 @@ qemuBuildDomainLoaderCommandLine(virCommandPtr cmd,
NULL);
}
- virBufferAsprintf(&buf,
- "file=%s,if=pflash,format=raw,unit=%d",
- loader->path, unit);
+ virBufferAddLit(&buf, "file=");
+ virQEMUBuildBufferEscapeComma(&buf, loader->path);
+ virBufferAsprintf(&buf, ",if=pflash,format=raw,unit=%d", unit);
unit++;
if (loader->readonly) {
@@ -9478,9 +9493,9 @@ qemuBuildDomainLoaderCommandLine(virCommandPtr cmd,
if (loader->nvram) {
virBufferFreeAndReset(&buf);
- virBufferAsprintf(&buf,
- "file=%s,if=pflash,format=raw,unit=%d",
- loader->nvram, unit);
+ virBufferAddLit(&buf, "file=");
+ virQEMUBuildBufferEscapeComma(&buf, loader->nvram);
+ virBufferAsprintf(&buf, ",if=pflash,format=raw,unit=%d", unit);
virCommandAddArg(cmd, "-drive");
virCommandAddArgBuffer(cmd, &buf);
--
2.16.2
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