46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#include <linux/init.h>
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#include <linux/console.h>
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#include "chan_user.h"
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/* ----------------------------------------------------------------------------- */
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/* trivial console driver -- simply dump everything to stderr */
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/*
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* Don't register by default -- as this registeres very early in the
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* boot process it becomes the default console. And as this isn't a
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* real tty driver init isn't able to open /dev/console then.
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*
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* In most cases this isn't what you want ...
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*/
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static int use_stderr_console = 0;
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static void stderr_console_write(struct console *console, const char *string,
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unsigned len)
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{
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generic_write(2 /* stderr */, string, len, NULL);
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}
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static struct console stderr_console = {
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.name "stderr",
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.write stderr_console_write,
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.flags CON_PRINTBUFFER,
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};
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static int __init stderr_console_init(void)
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{
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if (use_stderr_console)
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register_console(&stderr_console);
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return 0;
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}
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console_initcall(stderr_console_init);
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static int stderr_setup(char *str)
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{
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if (!str)
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return 0;
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use_stderr_console = simple_strtoul(str,&str,0);
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return 1;
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}
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__setup("stderr=", stderr_setup);
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