106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*------------------------------------------------------------------
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* memset_s
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*
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* October 2008, Bo Berry
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*
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* Copyright (c) 2008-2011 Cisco Systems
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*------------------------------------------------------------------
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*/
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#include "safeclib_private.h"
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#include "safe_mem_constraint.h"
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#include "mem_primitives_lib.h"
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#include "safe_mem_lib.h"
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/**
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* NAME
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* memset_s
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*
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* SYNOPSIS
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* #include "safe_mem_lib.h"
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* errno_t
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* memset_s(void *dest, rsize_t len, uint8_t value)
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*
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* DESCRIPTION
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* Sets len bytes starting at dest to the specified value.
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*
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* SPECIFIED IN
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* ISO/IEC JTC1 SC22 WG14 N1172, Programming languages, environments
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* and system software interfaces, Extensions to the C Library,
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* Part I: Bounds-checking interfaces
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*
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* INPUT PARAMETERS
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* dest pointer to memory that will be set to the value
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*
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* len number of bytes to be set
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*
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* value byte value
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*
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* OUTPUT PARAMETERS
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* dest is updated
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*
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* RUNTIME CONSTRAINTS
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* dest shall not be a null pointer.
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* len shall not be 0 nor greater than RSIZE_MAX_MEM.
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* If there is a runtime constraint, the operation is not performed.
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*
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* RETURN VALUE
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* EOK successful operation
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* ESNULLP NULL pointer
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* ESZEROL zero length
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* ESLEMAX length exceeds max limit
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*
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* ALSO SEE
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* memset16_s(), memset32_s()
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*
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*/
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errno_t
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memset_s (void *dest, rsize_t len, uint8_t value)
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{
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if (dest == NULL) {
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invoke_safe_mem_constraint_handler("memset_s: dest is null",
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NULL, ESNULLP);
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return (RCNEGATE(ESNULLP));
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}
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if (len == 0) {
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invoke_safe_mem_constraint_handler("memset_s: len is 0",
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NULL, ESZEROL);
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return (RCNEGATE(ESZEROL));
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}
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if (len > RSIZE_MAX_MEM) {
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invoke_safe_mem_constraint_handler("memset_s: len exceeds max",
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NULL, ESLEMAX);
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return (RCNEGATE(ESLEMAX));
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}
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mem_prim_set(dest, len, value);
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return (RCNEGATE(EOK));
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}
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EXPORT_SYMBOL(memset_s)
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