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Re: [Libvir] PATCH: 9/16: main internal storage driver



"Daniel P. Berrange" <berrange redhat com> wrote:
...
> diff -r 77cf7f42edd4 src/storage_conf.c
> --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
> +++ b/src/storage_conf.c	Thu Feb 07 12:59:40 2008 -0500
...
> +static int virStoragePoolDefParsePerms(virConnectPtr conn, xmlXPathContextPtr ctxt, virStoragePermsPtr perms) {
> +    char *mode;
> +    long v;
> +
> +    mode = virXPathString("string(/pool/permissions/mode)", ctxt);
> +    if (!mode) {
> +        perms->mode = 0700;
> +    } else {
> +        char *end;
> +        perms->mode = strtol(mode, &end, 8);
> +        if (end && *end) {
> +            virStorageReportError(conn, VIR_ERR_XML_ERROR, "malformed octal mode");
> +            return -1;
> +        }
> +    }
...

As long as you're checking for invalid inputs, you might as well
check for a couple other cases: negative: -01, and overflow:
(otherwise, 07777777777777777777777777777 is accepted)
And you can drop the "end &&" part, since "end" will never be NULL.

        if (*end || perms->mode < 0 || perms->mode > 0777) {

> +    if (!mode) {
> +        perms->mode = 0600;
> +    } else {
> +        char *end;
> +        perms->mode = strtol(mode, &end, 8);
> +        if (end && *end) {

Same here.

...
> +    *ret = strtoull(val, &end, 10);
> +    if (end && *end) {
> +        virStorageReportError(conn, VIR_ERR_XML_ERROR, "malformed capacity element");
> +        return -1;

Maybe use virStrToLong_ui instead of strtoull here?


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