From 13e442a84766b111b50651bab6f97ad6f951148a Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 10 Mar 2013 01:11:08 +0100 Subject: [PATCH] add debug handler --- debug.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 debug.c diff --git a/debug.c b/debug.c new file mode 100644 index 0000000..7d7798b --- /dev/null +++ b/debug.c @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2013 Felix Fietkau + * Copyright (C) 2013 John Crispin + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 + * as published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +#include "procd.h" + +unsigned int debug = 0; + +void debug_init(void) +{ + char line[256]; + int r, fd = open("/proc/cmdline", O_RDONLY); + regex_t pat_cmdline; + regmatch_t matches[2]; + + if (!fd) + return; + + r = read(fd, line, sizeof(line) - 1); + line[r] = '\0'; + close(fd); + + regcomp(&pat_cmdline, "init_debug=([0-9]*)", REG_EXTENDED); + if (!regexec(&pat_cmdline, line, 2, matches, 0)) { + line[matches[1].rm_eo] = '\0'; + debug = atoi(&line[matches[1].rm_so]); + } + regfree(&pat_cmdline); +} -- 2.11.0