diff options
Diffstat (limited to 'components/wifi.c')
| -rw-r--r-- | components/wifi.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/components/wifi.c b/components/wifi.c index 500332e..388a30d 100644 --- a/components/wifi.c +++ b/components/wifi.c @@ -1,5 +1,6 @@ /* See LICENSE file for copyright and license details. */ #if defined(__linux__) +#include <errno.h> #include <ifaddrs.h> #include <linux/wireless.h> #include <sys/socket.h> @@ -25,7 +26,7 @@ wifi_perc(const char *iface) snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, "/operstate"); fp = fopen(path, "r"); if (fp == NULL) { - fprintf(stderr, "Failed to open file %s", path); + fprintf(stderr, "fopen '%s': %s\n", path, strerror(errno)); return NULL; } p = fgets(status, 5, fp); @@ -36,7 +37,7 @@ wifi_perc(const char *iface) fp = fopen("/proc/net/wireless", "r"); if (fp == NULL) { - fprintf(stderr, "Failed to open file /proc/net/wireless"); + fprintf(stderr, "fopen '/proc/net/wireless': %s\n", strerror(errno)); return NULL; } @@ -71,12 +72,12 @@ wifi_essid(const char *iface) snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface); if (sockfd == -1) { - fprintf(stderr, "Failed to get ESSID for interface %s", iface); + fprintf(stderr, "socket 'AF_INET': %s\n", strerror(errno)); return NULL; } wreq.u.essid.pointer = id; if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) { - fprintf(stderr, "Failed to get ESSID for interface %s", iface); + fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", strerror(errno)); close(sockfd); return NULL; } |