Messages in this thread | | | From | Segher Boessenkool <> | Subject | Re: [PATCH] PPC: in celleb_show_cpuinfo() convert strncpy(x, y, sizeof(x)) to strlcpy | Date | Thu, 6 Mar 2008 16:44:24 +0100 |
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> This patch was not yet tested. Please confirm it's right. > --- > strncpy does not append '\0' if the length of the source string equals > the size parameter, strlcpy does.
strlcpy() doesn't fill the rest of the array with zeroes, strncpy() does. This could matter (information leak, for example), although I doubt it does here.
> - strncpy(celleb_machine_type, ptr, sizeof(celleb_machine_type)); > + strlcpy(celleb_machine_type, ptr, sizeof(celleb_machine_type)); > celleb_machine_type[sizeof(celleb_machine_type)-1] = 0;
That last statement makes the strncpy() case always zero-terminated, so this patch isn't necessary. Oh, and neither the old nor the new code handles the case where the string doesn't fit (other than just cutting it short); is that the wanted behaviour?
Segher
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