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nss-myhostname: use LOOPBACK_IFINDEX instead of if_nametoindex("lo")

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Given that we already hardocde the loopback ifindex, following the
kernel's own logic, we can replace the invocation of
if_nametoindex("lo") with LOOPBACK_IFINDEX.
This commit is contained in:
Lennart Poettering 2015-08-14 13:11:04 +02:00
parent c5974b33e7
commit f43242886c
1 changed files with 1 additions and 2 deletions
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src/nss-myhostname/nss-myhostname.c
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@ -39,7 +39,6 @@
#define LOCALADDRESS_IPV4 (htonl(0x7F000002))
#define LOCALADDRESS_IPV6 &in6addr_loopback
#define LOOPBACK_INTERFACE "lo"
NSS_GETHOSTBYNAME_PROTOTYPES(myhostname);
NSS_GETHOSTBYADDR_PROTOTYPES(myhostname);
@ -117,7 +116,7 @@ enum nss_status _nss_myhostname_gethostbyname4_r(
}
/* If this call fails we fill in 0 as scope. Which is fine */
lo_ifi = n_addresses <= 0 ? if_nametoindex(LOOPBACK_INTERFACE) : 0;
lo_ifi = n_addresses <= 0 ? LOOPBACK_IFINDEX : 0;
l = strlen(canonical);
ms = ALIGN(l+1) + ALIGN(sizeof(struct gaih_addrtuple)) * (n_addresses > 0 ? n_addresses : 2);