diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/util.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/common/util.h b/common/util.h index 102b55b..ad2192b 100644 --- a/common/util.h +++ b/common/util.h @@ -8,6 +8,7 @@ #include <string.h> #include <stdint.h> +#include <errno.h> #define BIT(n) (1UL << (n)) @@ -33,6 +34,17 @@ void debug(const char *format, ...); exit(EXIT_FAILURE); \ } while (0) +#define ret_err(e, ...) \ + do { \ + if (errno == 0) { \ + err(__VA_ARGS__); \ + } else { \ + fprintf(stderr, __VA_ARGS__); \ + fprintf(stderr, ": %s\n", strerror(errno)); \ + } \ + return (e); \ + } while (0) + /** * From the Linux kernel, include/linux/log2.h: * |