Punt iputils_common helpers.

[rarpd-dx.git] / src / iputils_common.c

diff --git a/src/iputils_common.c b/src/iputils_common.c
deleted file mode 100644 (file)
index c41f201..0000000
--- a/src/iputils_common.c
+++ /dev/null
@@ -1,140 +0,0 @@
-#include <errno.h>
-#include <stdarg.h>
-#include <stdio_ext.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#if HAVE_GETRANDOM
-# include <sys/random.h>
-#endif
-
-#ifdef HAVE_ERROR_H
-# include <error.h>
-#else
-void error(int status, int errnum, const char *format, ...)
-{
-       va_list ap;
-
-       fprintf(stderr, "%s: ", program_invocation_short_name);
-       va_start(ap, format);
-       vfprintf(stderr, format, ap);
-       va_end(ap);
-       if (errnum)
-               fprintf(stderr, ": %s\n", strerror(errnum));
-       else
-               fprintf(stderr, "\n");
-       if (status)
-               exit(status);
-}
-#endif
-
-int close_stream(FILE *stream)
-{
-       const int flush_status = fflush(stream);
-#ifdef HAVE___FPENDING
-       const int some_pending = (__fpending(stream) != 0);
-#endif
-       const int prev_fail = (ferror(stream) != 0);
-       const int fclose_fail = (fclose(stream) != 0);
-
-       if (flush_status ||
-           prev_fail || (fclose_fail && (
-#ifdef HAVE___FPENDING
-                                         some_pending ||
-#endif
-                                         errno != EBADF))) {
-               if (!fclose_fail && !(errno == EPIPE))
-                       errno = 0;
-               return EOF;
-       }
-       return 0;
-}
-
-void close_stdout(void)
-{
-       if (close_stream(stdout) != 0 && !(errno == EPIPE)) {
-               if (errno)
-                       error(0, errno, "write error");
-               else
-                       error(0, 0, "write error");
-               _exit(EXIT_FAILURE);
-       }
-       if (close_stream(stderr) != 0)
-               _exit(EXIT_FAILURE);
-}
-
-long strtol_or_err(char const *const str, char const *const errmesg,
-                  const long min, const long max)
-{
-       long num;
-       char *end = NULL;
-
-       errno = 0;
-       if (str == NULL || *str == '\0')
-               goto err;
-       num = strtol(str, &end, 10);
-       if (errno || str == end || (end && *end))
-               goto err;
-       if (num < min || max < num)
-               error(EXIT_FAILURE, 0, "%s: '%s': out of range: %lu <= value <= %lu",
-                     errmesg, str,  min, max);
-       return num;
- err:
-       error(EXIT_FAILURE, errno, "%s: '%s'", errmesg, str);
-       abort();
-}
-
-static unsigned int iputil_srand_fallback(void)
-{
-       struct timespec ts;
-
-       clock_gettime(CLOCK_REALTIME, &ts);
-       return ((getpid() << 16) ^ getuid() ^ ts.tv_sec ^ ts.tv_nsec);
-}
-
-void iputils_srand(void)
-{
-       unsigned int i;
-
-#if HAVE_GETRANDOM
-       ssize_t ret;
-
-       do {
-               errno = 0;
-               ret = getrandom(&i, sizeof(i), GRND_NONBLOCK);
-               switch (errno) {
-               case 0:
-                       break;
-               case EINTR:
-                       continue;
-               default:
-                       i = iputil_srand_fallback();
-                       goto done;
-               }
-       } while (ret != sizeof(i));
- done:
-#else
-       i = iputil_srand_fallback();
-#endif
-       srand(i);
-       /* Consume up to 31 random numbers */
-       i = rand() & 0x1F;
-       while (0 < i) {
-               rand();
-               i--;
-       }
-}
-
-void timespecsub(struct timespec *a, struct timespec *b, struct timespec *res)
-{
-       res->tv_sec = a->tv_sec - b->tv_sec;
-       res->tv_nsec = a->tv_nsec - b->tv_nsec;
-
-       if (res->tv_nsec < 0) {
-               res->tv_sec--;
-               res->tv_nsec += 1000000000L;
-       }
-}