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Differential D20141 Diff 57103 head/sys/compat/linux/linux.c

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head/sys/compat/linux/linux.c

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* can point to the same buffer. * can point to the same buffer.
*/ */
struct ifnet * struct ifnet *
ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname) ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname)
{ {
struct ifnet *ifp; struct ifnet *ifp;
int len, unit; int len, unit;
char *ep; char *ep;
int is_eth, is_lo, index; int index;
bool is_eth, is_lo;
for (len = 0; len < LINUX_IFNAMSIZ; ++len) for (len = 0; len < LINUX_IFNAMSIZ; ++len)
if (!isalpha(lxname[len]) || lxname[len] == 0) if (!isalpha(lxname[len]) || lxname[len] == '\0')
break; break;
if (len == 0 || len == LINUX_IFNAMSIZ) if (len == 0 || len == LINUX_IFNAMSIZ)
return (NULL); return (NULL);
/* Linux loopback interface name is lo (not lo0) */ /* Linux loopback interface name is lo (not lo0) */
is_lo = (len == 2 && !strncmp(lxname, "lo", len)) ? 1 : 0; is_lo = (len == 2 && strncmp(lxname, "lo", len) == 0);
unit = (int)strtoul(lxname + len, &ep, 10); unit = (int)strtoul(lxname + len, &ep, 10);
if ((ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ) && if ((ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ) &&
is_lo == 0) is_lo == 0)
return (NULL); return (NULL);
index = 0; index = 0;
is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0; is_eth = (len == 3 && strncmp(lxname, "eth", len) == 0);
CURVNET_SET(TD_TO_VNET(td)); CURVNET_SET(TD_TO_VNET(td));
IFNET_RLOCK(); IFNET_RLOCK();
CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) { CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
/* /*
* Allow Linux programs to use FreeBSD names. Don't presume * Allow Linux programs to use FreeBSD names. Don't presume
* we never have an interface named "eth", so don't make * we never have an interface named "eth", so don't make
* the test optional based on is_eth. * the test optional based on is_eth.
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