diff options
Diffstat (limited to 'components/battery.c')
| -rw-r--r-- | components/battery.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/components/battery.c b/components/battery.c index cd1169d..75f2945 100644 --- a/components/battery.c +++ b/components/battery.c @@ -1,5 +1,7 @@ /* See LICENSE file for copyright and license details. */ +#include <errno.h> #include <stdio.h> +#include <string.h> #if defined(__linux__) #include <limits.h> #include <string.h> @@ -28,12 +30,12 @@ battery_perc(const char *bat) fd = open("/dev/apm", O_RDONLY); if (fd < 0) { - fprintf(stderr, "Failed to open file /dev/apm"); + fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno)); return NULL; } if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) { - fprintf(stderr, "Failed to get battery info"); + fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n", strerror(errno)); close(fd); return NULL; } |