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nodedev: capture and report stderror from mdevctl

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When an mdevctl command fails, there is not much information available
to the user about why it failed. This is partly because we were not
making use of the error message that mdevctl itself prints upon failure.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Jonathon Jongsma
2021-02-23 14:24:14 -06:00
parent ffda44030a
commit ab1703191b
3 changed files with 37 additions and 21 deletions
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6
tests/nodedevmdevctltest.c
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@@ -58,6 +58,7 @@ testMdevctlStart(const char *virt_type,
const char *actualCmdline = NULL;
int ret = -1;
g_autofree char *uuid = NULL;
g_autofree char *errmsg = NULL;
g_autofree char *stdinbuf = NULL;
g_autoptr(virCommand) cmd = NULL;
@@ -66,7 +67,7 @@ testMdevctlStart(const char *virt_type,
/* this function will set a stdin buffer containing the json configuration
* of the device. The json value is captured in the callback above */
cmd = nodeDeviceGetMdevctlStartCommand(def, &uuid);
cmd = nodeDeviceGetMdevctlStartCommand(def, &uuid, &errmsg);
if (!cmd)
goto cleanup;
@@ -117,11 +118,12 @@ testMdevctlStop(const void *data)
const char *actualCmdline = NULL;
int ret = -1;
g_autoptr(virCommand) cmd = NULL;
g_autofree char *errmsg = NULL;
g_autofree char *cmdlinefile =
g_strdup_printf("%s/nodedevmdevctldata/mdevctl-stop.argv",
abs_srcdir);
cmd = nodeDeviceGetMdevctlStopCommand(uuid);
cmd = nodeDeviceGetMdevctlStopCommand(uuid, &errmsg);
if (!cmd)
goto cleanup;