53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/*
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* Copyright (c) Huawei Technologies Co., Ltd. 2014-2018. All rights reserved.
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* Description: sprintf_s function
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* Author: lishunda
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* Create: 2014-02-25
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*/
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#include "securec.h"
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/*
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* <FUNCTION DESCRIPTION>
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* The sprintf_s function is equivalent to the sprintf function
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* except for the parameter destMax and the explicit runtime-constraints violation
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* The sprintf_s function formats and stores a series of characters and values
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* in strDest. Each argument (if any) is converted and output according to
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* the corresponding format specification in format. The format consists of
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* ordinary characters and has the same form and function as the format argument
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* for printf. A null character is appended after the last character written.
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* If copying occurs between strings that overlap, the behavior is undefined.
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*
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* <INPUT PARAMETERS>
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* strDest Storage location for output.
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* destMax Maximum number of characters to store.
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* format Format-control string.
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* ... Optional arguments
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*
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* <OUTPUT PARAMETERS>
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* strDest is updated
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*
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* <RETURN VALUE>
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* return the number of bytes stored in strDest, not counting the terminating null character.
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* return -1 if an error occurred.
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*
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* If there is a runtime-constraint violation, strDest[0] will be set to the '\0' when strDest and destMax valid
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*/
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int sprintf_s(char *strDest, size_t destMax, const char *format, ...)
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{
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int ret; /* If initialization causes e838 */
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va_list argList;
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va_start(argList, format);
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ret = vsprintf_s(strDest, destMax, format, argList);
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va_end(argList);
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(void)argList; /* To clear e438 last value assigned not used , the compiler will optimize this code */
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return ret;
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}
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#if SECUREC_IN_KERNEL
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EXPORT_SYMBOL(sprintf_s);
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#endif
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