1 /* $OpenBSD: debug.c,v 1.1 2011/04/16 10:52:22 ratchov Exp $ */ 2 /* 3 * Copyright (c) 2011 Alexandre Ratchov <alex@caoua.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <stdio.h> 19 #include <stdlib.h> 20 #include <unistd.h> 21 22 #include "debug.h" 23 24 #ifdef DEBUG 25 /* 26 * debug level, -1 means uninitialized 27 */ 28 int sndio_debug = -1; 29 30 void 31 sndio_debug_init(void) 32 { 33 char *dbg; 34 35 if (sndio_debug < 0) { 36 dbg = issetugid() ? NULL : getenv("SNDIO_DEBUG"); 37 if (!dbg || sscanf(dbg, "%u", &sndio_debug) != 1) 38 sndio_debug = 0; 39 } 40 } 41 #endif 42