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https://github.com/brain-hackers/u-boot-brain
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046a37bd53
From: Sonny Rao <sonnyrao@chromium.org> These functions are useful in U-Boot because they allow a graceful failure rather than an unpredictable stack overflow when printf() buffers are exceeded. Mostly copied from the Linux kernel. I copied vscnprintf and scnprintf so we can change printf and vprintf to use the safe implementation but still return the correct values. (Simon Glass <sjg@chromium.org> modified this commit a little) Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
59 lines
2.4 KiB
C
59 lines
2.4 KiB
C
/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __VSPRINTF_H
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#define __VSPRINTF_H
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ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
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int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
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unsigned long long simple_strtoull(const char *cp, char **endp,
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unsigned int base);
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long simple_strtol(const char *cp, char **endp, unsigned int base);
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void panic(const char *fmt, ...)
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__attribute__ ((format (__printf__, 1, 2), noreturn));
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int sprintf(char *buf, const char *fmt, ...)
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__attribute__ ((format (__printf__, 2, 3)));
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int vsprintf(char *buf, const char *fmt, va_list args);
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char *simple_itoa(ulong i);
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#ifdef CONFIG_SYS_VSNPRINTF
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int snprintf(char *buf, size_t size, const char *fmt, ...)
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__attribute__ ((format (__printf__, 3, 4)));
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int scnprintf(char *buf, size_t size, const char *fmt, ...)
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__attribute__ ((format (__printf__, 3, 4)));
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int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
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int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
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#else
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/*
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* Use macros to silently drop the size parameter. Note that the 'cn'
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* versions are the same as the 'n' versions since the functions assume
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* there is always enough buffer space when !CONFIG_SYS_VSNPRINTF
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*/
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#define snprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
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#define scnprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
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#define vsnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
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#define vscnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
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#endif /* CONFIG_SYS_VSNPRINTF */
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#endif
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