diff options
| author | Aaron Marcher <me@drkhsh.at> | 2018-03-28 19:46:27 +0200 |
|---|---|---|
| committer | Aaron Marcher <me@drkhsh.at> | 2018-03-28 19:46:27 +0200 |
| commit | faa52bdcc0221de2d8fae950e409a8ac5e05bfcd (patch) | |
| tree | 7e1641219e1d65d82f8e5467a1a599d11fd6164c /components/ip.c | |
| parent | 2289798b6d3565d96cc81d5208c50afa2010e296 (diff) | |
Format error messages properly
Make use of strerror(errno) and format all errors equally:
function ['parameters']: error message
Diffstat (limited to 'components/ip.c')
| -rw-r--r-- | components/ip.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/components/ip.c b/components/ip.c index c46ec9e..686344b 100644 --- a/components/ip.c +++ b/components/ip.c @@ -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); |