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virsh: Improve vshCommandOptTimeoutToMs()

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Use vshCommandOptUInt() instead of parsing the value as a signed
integer and checking whether it's positive afterwards.

Improve comments as well.
This commit is contained in:
Andrea Bolognani 2015-06-02 11:17:26 +02:00 committed by John Ferlan
parent d27160bb82
commit e03ef9af7c
1 changed files with 28 additions and 19 deletions
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47
tools/virsh.c
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@ -1860,33 +1860,42 @@ vshCommandOptArgv(const vshCmd *cmd, const vshCmdOpt *opt)
return NULL;
}
/* Parse an optional --timeout parameter in seconds, but store the
* value of the timeout in milliseconds. Return -1 on error, 0 if
* no timeout was requested, and 1 if timeout was set. */
/*
* vshCommandOptTimeoutToMs:
* @ctl virsh control structure
* @cmd command reference
* @timeout result
*
* Parse an optional --timeout parameter in seconds, but store the
* value of the timeout in milliseconds.
* See vshCommandOptInt()
*/
int
vshCommandOptTimeoutToMs(vshControl *ctl, const vshCmd *cmd, int *timeout)
{
int rv = vshCommandOptInt(cmd, "timeout", timeout);
int ret;
unsigned int utimeout;
if (rv < 0 || (rv > 0 && *timeout < 1)) {
if ((ret = vshCommandOptUInt(cmd, "timeout", &utimeout)) < 0)
vshError(ctl,
_("Numeric value for <%s> option is malformed or out of range"),
"timeout");
return -1;
}
if (rv > 0) {
/* Ensure that we can multiply by 1000 without overflowing. */
if (*timeout > INT_MAX / 1000) {
vshError(ctl,
_("Numeric value for <%s> option is malformed or out of range"),
"timeout");
return -1;
}
*timeout *= 1000;
}
return rv;
}
if (ret <= 0)
return ret;
/* Ensure that the timeout is not zero and that we can convert
* it from seconds to milliseconds without overflowing. */
if (utimeout == 0 || utimeout > INT_MAX / 1000) {
vshError(ctl,
_("Numeric value for <%s> option is malformed or out of range"),
"timeout");
ret = -1;
} else {
*timeout = ((int) utimeout) * 1000;
}
return ret;
}
static bool
vshConnectionUsability(vshControl *ctl, virConnectPtr conn)