Re: [libvirt] [PATCH 5/7] qemu: Use qemuGetCompressionProgram for error paths

Let's do some more code reuse - there are 3 other callers that care to check/get the compress program. Each of those though cares whether the requested cfg image is valid and exists. So, add a parameter to handle those cases. NB: We won't need to initialize the returned value in the case where the cfg image doesn't exist since the called program will handle that. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- src/qemu/qemu_driver.c | 99 ++++++++++++++++++++------------------------------ 1 file changed, 40 insertions(+), 59 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 4cd0a07..505dd29 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -3270,6 +3270,9 @@ qemuCompressProgramAvailable(virQEMUSaveFormat compress) /* qemuGetCompressionProgram: * @imageFormat: String representation from qemu.conf for the compression * image format being used (dump, save, or snapshot). + * @use_raw_on_fail: Boolean indicating how to handle the error path. For + * callers that are OK with invalid data or inability to + * find the compression program, just return a raw format * * Returns: * virQEMUSaveFormat - Integer representation of the compression @@ -3280,7 +3283,8 @@ qemuCompressProgramAvailable(virQEMUSaveFormat compress) * indicating none. */ static virQEMUSaveFormat -qemuGetCompressionProgram(const char *imageFormat) +qemuGetCompressionProgram(const char *imageFormat, + bool use_raw_on_fail) { virQEMUSaveFormat ret; @@ -3296,17 +3300,31 @@ qemuGetCompressionProgram(const char *imageFormat) return ret; error: - if (ret < 0) - VIR_WARN("%s", _("Invalid dump image format specified in " - "configuration file, using raw")); - else - VIR_WARN("%s", _("Compression program for dump image format " - "in configuration file isn't available, " - "using raw")); + if (ret < 0) { + if (use_raw_on_fail) + VIR_WARN("%s", _("Invalid dump image format specified in " + "configuration file, using raw")); + else + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("Invalid save image format specified " + "in configuration file")); + } else { + if (use_raw_on_fail) + VIR_WARN("%s", _("Compression program for dump image format " + "in configuration file isn't available, " + "using raw")); + else + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("Compression program for image format " + "in configuration file isn't available")); + }