[libvirt] [PATCH 01/11] qemu: process: report useful error if alias formatting fails
Jiri Denemark
jdenemar at redhat.com
Thu Nov 20 16:43:43 UTC 2014
On Wed, Nov 19, 2014 at 11:23:14 +0100, Peter Krempa wrote:
> When retrieving the paths for PTY devices the alias gets formatted into
> a static string. If it doesn't fit we wouldn't report an error.
> ---
> src/qemu/qemu_process.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> index 7518138..e58a46d 100644
> --- a/src/qemu/qemu_process.c
> +++ b/src/qemu/qemu_process.c
> @@ -1878,8 +1878,12 @@ qemuProcessLookupPTYs(virDomainDefPtr def,
>
> if (snprintf(id, sizeof(id), "%s%s",
> chardevfmt ? "char" : "",
> - chr->info.alias) >= sizeof(id))
> + chr->info.alias) >= sizeof(id)) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("failed to format device alias "
> + "for PTY retrieval"));
> return -1;
> + }
>
> path = (const char *) virHashLookup(paths, id);
> if (path == NULL) {
ACK although I thought we had some neat wrapper around snprintf, or is
my memory playing games with me?
Jirka
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