"Das U-Boot" Source Tree
console: Support a format string for stderr output
Add a console_printf_select_stderr() function so that it is not
necessary for the caller to process the format string.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
authored by
Simon Glass
and committed by
Tom Rini
fe2d4d4c
4ca87fd1
+33
+18
common/console.c
+18
common/console.c
···
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console_puts_select(stderr, serial_only, s);
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}
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int console_printf_select_stderr(bool serial_only, const char *fmt, ...)
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{
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char buf[CONFIG_SYS_PBSIZE];
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va_list args;
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int ret;
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va_start(args, fmt);
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/* For this to work, buf must be larger than anything we ever want to
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* print.
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*/
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ret = vscnprintf(buf, sizeof(buf), fmt, args);
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va_end(args);
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console_puts_select_stderr(serial_only, buf);
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return ret;
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}
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static void console_puts(int file, const char *s)
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{
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int i;
+15
include/console.h
+15
include/console.h
···
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void console_puts_select_stderr(bool serial_only, const char *s);
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/**
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* console_printf_select_stderr() - Output a formatted string to selected devs
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*
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* This writes to stderr only. It is useful for outputting errors. Note that it
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* uses its own buffer, separate from the print buffer, to allow printing
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* messages within console/stdio code
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*
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* @serial_only: true to output only to serial, false to output to everything
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* else
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* @fmt: Printf format string, followed by format arguments
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* Return: number of characters written
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*/
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int console_printf_select_stderr(bool serial_only, const char *fmt, ...)
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__attribute__ ((format (__printf__, 2, 3)));
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/**
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* console_clear() - Clear the console
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*
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* Uses an ANSI sequence to clear the display, failing back to clearing the