hv: remove strcpy_s
Since it's discarded. Tracked-On: #861 Signed-off-by: Li, Fei1 <fei1.li@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com> Reviewed-by: Huang, Yonghua <yonghua.huang@intel.com>
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@ -24,7 +24,6 @@ void udelay(uint32_t us);
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void *memchr(const void *void_s, int32_t c, size_t n);
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int32_t strcmp(const char *s1_arg, const char *s2_arg);
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int32_t strncmp(const char *s1_arg, const char *s2_arg, size_t n_arg);
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char *strcpy_s(char *d_arg, size_t dmax, const char *s_arg);
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char *strncpy_s(char *d_arg, size_t dmax, const char *s_arg, size_t slen_arg);
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char *strchr(char *s_arg, char ch);
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size_t strnlen_s(const char *str_arg, size_t maxlen_arg);
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@ -172,79 +172,6 @@ char *strchr(char *s_arg, char ch)
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return ((*s) != '\0') ? s : NULL;
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}
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/**
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*strcpy_s
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*
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* description:
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* This function copies the string pointed to by s to a buffer
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* pointed by d.
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*
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* input:
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* d pointer to dest buffer.
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*
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* dmax maximum length of dest buffer
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*
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* s pointer to the source string
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*
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* return value:
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* dest pointer to dest string if string is copied
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* successfully,or else return null.
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*
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* notes:
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* 1) both d and s shall not be null pointers.
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* 2) dmax shall not 0.
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*/
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char *strcpy_s(char *d_arg, size_t dmax, const char *s_arg)
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{
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char *d = d_arg;
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const char *s = s_arg;
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char *dest_base;
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size_t dest_avail;
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uint64_t overlap_guard;
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if ((s == NULL) || (d == NULL) || (dmax == 0U)) {
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pr_err("%s: invalid src, dest buffer or length.", __func__);
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return NULL;
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}
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if (s == d) {
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return d;
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}
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overlap_guard = (uint64_t)((d > s) ? (d - s - 1) : (s - d - 1));
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dest_avail = dmax;
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dest_base = d;
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while (dest_avail > 0U) {
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if (overlap_guard == 0U) {
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pr_err("%s: overlap happened.", __func__);
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d--;
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*d = '\0';
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return NULL;
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}
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*d = *s;
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if (*d == '\0') {
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return dest_base;
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}
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d++;
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s++;
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dest_avail--;
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overlap_guard--;
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}
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pr_err("%s: dest buffer has no enough space.", __func__);
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/*
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* to avoid a string that is not
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* null-terminated in dest buffer
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*/
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dest_base[dmax - 1] = '\0';
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return NULL;
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}
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/*
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* strncpy_s
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*
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