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Format error messages properly

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Make use of strerror(errno) and format all errors equally:
function ['parameters']: error message
This commit is contained in:
Aaron Marcher 2018-03-28 19:46:27 +02:00
parent 2289798b6d
commit faa52bdcc0
15 changed files with 55 additions and 33 deletions
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9
components/ip.c
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@ -1,5 +1,6 @@
/* See LICENSE file for copyright and license details. */
#if defined(__linux__)
#include <errno.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <stdio.h>
@ -15,7 +16,7 @@ ipv4(const char *iface)
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1) {
fprintf(stderr, "Failed to get IPv4 address for interface %s", iface);
fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
return NULL;
}
@ -26,7 +27,7 @@ ipv4(const char *iface)
s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
if (s != 0) {
fprintf(stderr, "Failed to get IPv4 address for interface %s", iface);
fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
return NULL;
}
return bprintf("%s", host);
@ -46,7 +47,7 @@ ipv6(const char *iface)
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1) {
fprintf(stderr, "Failed to get IPv6 address for interface %s", iface);
fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
return NULL;
}
@ -57,7 +58,7 @@ ipv6(const char *iface)
s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET6)) {
if (s != 0) {
fprintf(stderr, "Failed to get IPv6 address for interface %s", iface);
fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
return NULL;
}
return bprintf("%s", host);