err = errno;
} while (ret < 0 && err == EINTR);
if (ret < 0)
- PARA_CRIT_LOG("select error (%s)\n", strerror(err));
+ PARA_CRIT_LOG("select error: %s, max_fileno: %d\n",
+ strerror(err), n);
return ret;
}
*
* This wrapper for FD_SET() passes its first two arguments to \p FD_SET. Upon
* return, \a max_fileno contains the maximum of the old_value and \a fd.
+ *
+ * \sa para_select
*/
void para_fd_set(int fd, fd_set *fds, int *max_fileno)
{
+
+ if (fd < 0 || fd >= FD_SETSIZE) {
+ PARA_EMERG_LOG("fatal: tried to add invalid fd %d\n", fd);
+ exit(EXIT_FAILURE);
+ }
+#if 0
+ {
+ int flags = fcntl(fd, F_GETFL);
+ if (!(flags & O_NONBLOCK)) {
+ PARA_EMERG_LOG("fd %d is a blocking file descriptor\n", fd);
+ exit(EXIT_FAILURE);
+ }
+ }
+#endif
FD_SET(fd, fds);
*max_fileno = PARA_MAX(*max_fileno, fd);
}
+
+/**
+ * paraslash's wrapper for fread(3)
+ *
+ * \param dest destination pointer
+ * \param nbytes size of one element
+ * \param nmemb number of elements to write
+ * \param stream the input stream
+ *
+ * \return negative on errors, zero on end of file, and the number of bytes
+ * (not elements) read on success.
+ *
+ * \sa fread(3)
+ */
+__must_check int para_fread(void *dest, size_t nbytes, size_t nmemb, FILE *stream)
+{
+ size_t res = fread(dest, nbytes, nmemb, stream);
+ if (res == nmemb)
+ return nbytes * nmemb;
+ if (feof(stream))
+ return 0;
+ return -E_FREAD;
+}