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Message-ID: <50834745.7090307@embtoolkit.org> Date: Sun, 21 Oct 2012 02:52:21 +0200 From: Abdoulaye Walsimou GAYE <awg@...toolkit.org> To: musl@...ts.openwall.com Subject: Re: [PATCH 3/4] Import BSD functions defined in <netinet/ether.h> from NetBSD On 10/21/2012 02:42 AM, John Spencer wrote: > On 10/20/2012 10:15 PM, Abdoulaye Walsimou Gaye wrote: >> +/* >> + * ether_aton(): >> + * This function converts an ASCII string of the same form and to a structure >> + * containing the 6 octets of the address. It returns a pointer to a >> + * static structure that is reused for each call. >> + */ >> +struct ether_addr *ether_aton(const char *s) >> +{ >> + static struct ether_addr n; >> + unsigned int i[6]; >> + >> + assert(s != NULL); >> + >> + if (sscanf(s, " %x:%x:%x:%x:%x:%x ",&i[0],&i[1], >> + &i[2],&i[3],&i[4],&i[5]) == 6) { >> + n.ether_addr_octet[0] = (unsigned char)i[0]; >> + n.ether_addr_octet[1] = (unsigned char)i[1]; >> + n.ether_addr_octet[2] = (unsigned char)i[2]; >> + n.ether_addr_octet[3] = (unsigned char)i[3]; >> + n.ether_addr_octet[4] = (unsigned char)i[4]; >> + n.ether_addr_octet[5] = (unsigned char)i[5]; >> + return&n; >> + } >> + return NULL; >> +} > > why do you duplicate the code and not use simply the _r functions from [4/4] with the static buffer ? > btw the usage of sscanf is both bloated and slow. This was for record of the original code from NetBSD, before patching it in [4/4] > > anyway, i doubt it makes sense to add this crap; i never needed it for sabotage which is almost feature complete and compiles 250 packages. I can not argue with this kind of comments. Cheers, AWG
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