/*
* Add a command line argument created by a printf-style format
*/
void
virCommandAddArgFormat(virCommandPtr cmd, const char *format, ...)
{
char *arg;
va_list list;
if (!cmd || cmd->has_error)
return;
va_start(list, format);
if (virVasprintf(&arg, format, list) < 0) {
cmd->has_error = ENOMEM;
va_end(list);
return;
}
va_end(list);
/* Arg plus trailing NULL. */
if (VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1) < 0) {
VIR_FREE(arg);
cmd->has_error = ENOMEM;
return;
}
cmd->args[cmd->nargs++] = arg;
}
/**
* sexpr_fmt_node:
* @sexpr: a pointer to a parsed S-Expression
* @fmt: a path for the node to lookup in the S-Expression
* @... extra data to build the path
*
* Search a node value in the S-Expression based on its path
*
* Returns the value of the node or NULL if not found.
*/
const char *
sexpr_fmt_node(const struct sexpr *sexpr, const char *fmt, ...)
{
int result;
va_list ap;
char *node;
const char *value;
va_start(ap, fmt);
result = virVasprintf(&node, fmt, ap);
va_end(ap);
if (result < 0) {
return NULL;
}
value = sexpr_node(sexpr, node);
VIR_FREE(node);
return value;
}
void virtTestResult(const char *name, int ret, const char *msg, ...)
{
va_list vargs;
va_start(vargs, msg);
if (testCounter == 0 && !virTestGetVerbose())
fprintf(stderr, " ");
testCounter++;
if (virTestGetVerbose()) {
fprintf(stderr, "%3d) %-60s ", testCounter, name);
if (ret == 0)
fprintf(stderr, "OK\n");
else {
fprintf(stderr, "FAILED\n");
if (msg) {
char *str;
if (virVasprintf(&str, msg, vargs) == 0) {
fprintf(stderr, "%s", str);
VIR_FREE(str);
}
}
}
} else {
if (testCounter != 1 &&
!((testCounter-1) % 40)) {
fprintf(stderr, " %-3d\n", (testCounter-1));
fprintf(stderr, " ");
}
if (ret == 0)
fprintf(stderr, ".");
else
fprintf(stderr, "!");
}
va_end(vargs);
}
/**
* virLogMessage:
* @category: where is that message coming from
* @priority: the priority level
* @funcname: the function emitting the (debug) message
* @linenr: line where the message was emitted
* @flags: extra flags, 1 if coming from the error handler
* @fmt: the string format
* @...: the arguments
*
* Call the libvirt logger with some information. Based on the configuration
* the message may be stored, sent to output or just discarded
*/
void virLogMessage(const char *category, int priority, const char *funcname,
long long linenr, unsigned int flags, const char *fmt, ...)
{
static bool logVersionStderr = true;
char *str = NULL;
char *msg = NULL;
char timestamp[VIR_TIME_STRING_BUFLEN];
int fprio, i, ret;
int saved_errno = errno;
int emit = 1;
va_list ap;
if (!virLogInitialized)
virLogStartup();
if (fmt == NULL)
goto cleanup;
/*
* check against list of specific logging patterns
*/
fprio = virLogFiltersCheck(category);
if (fprio == 0) {
if (priority < virLogDefaultPriority)
emit = 0;
} else if (priority < fprio) {
emit = 0;
}
if ((emit == 0) && ((virLogBuffer == NULL) || (virLogSize <= 0)))
goto cleanup;
/*
* serialize the error message, add level and timestamp
*/
va_start(ap, fmt);
if (virVasprintf(&str, fmt, ap) < 0) {
va_end(ap);
goto cleanup;
}
va_end(ap);
ret = virLogFormatString(&msg, funcname, linenr, priority, str);
VIR_FREE(str);
if (ret < 0)
goto cleanup;
if (virTimeStringNowRaw(timestamp) < 0)
timestamp[0] = '\0';
/*
* Log based on defaults, first store in the history buffer,
* then if emit push the message on the outputs defined, if none
* use stderr.
* NOTE: the locking is a single point of contention for multiple
* threads, but avoid intermixing. Maybe set up locks per output
* to improve paralellism.
*/
virLogLock();
virLogStr(timestamp);
virLogStr(msg);
virLogUnlock();
if (emit == 0)
goto cleanup;
virLogLock();
for (i = 0; i < virLogNbOutputs; i++) {
if (priority >= virLogOutputs[i].priority) {
if (virLogOutputs[i].logVersion) {
char *ver = NULL;
if (virLogVersionString(&ver) >= 0)
virLogOutputs[i].f(category, VIR_LOG_INFO,
__func__, __LINE__,
timestamp, ver,
virLogOutputs[i].data);
VIR_FREE(ver);
virLogOutputs[i].logVersion = false;
}
virLogOutputs[i].f(category, priority, funcname, linenr,
timestamp, msg, virLogOutputs[i].data);
}
}
if ((virLogNbOutputs == 0) && (flags != 1)) {
if (logVersionStderr) {
char *ver = NULL;
if (virLogVersionString(&ver) >= 0)
virLogOutputToFd(category, VIR_LOG_INFO,
__func__, __LINE__,
timestamp, ver,
(void *) STDERR_FILENO);
VIR_FREE(ver);
logVersionStderr = false;
}
virLogOutputToFd(category, priority, funcname, linenr,
timestamp, msg, (void *) STDERR_FILENO);
}
virLogUnlock();
cleanup:
VIR_FREE(msg);
errno = saved_errno;
}
