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strlcat.c

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/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/compat/strlcat.c

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1 /* $OpenBSD: strlcat.c,v 1.18 2016/10/16 17:37:39 dtucker Exp $ */ -

2 -

3 /* -

5 * -

6 * Permission to use, copy, modify, and distribute this software for any -

7 * purpose with or without fee is hereby granted, provided that the above -

8 * copyright notice and this permission notice appear in all copies. -

9 * -

10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -

11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF -

12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR -

13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -

14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN -

15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF -

16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -

17 */ -

18 -

19 #include <sys/types.h> -

20 #include <string.h> -

21 -

22 /* -

23 * Appends src to string dst of size dsize (unlike strncat, dsize is the -

24 * full size of dst, not space left). At most dsize-1 characters -

25 * will be copied. Always NUL terminates (unless dsize <= strlen(dst)). -

26 * Returns strlen(src) + MIN(dsize, strlen(initial dst)). -

27 * If retval >= dsize, truncation occurred. -

28 */ -

29 size_t -

30 strlcat(char *dst, const char *src, size_t dsize) -

31 { -

32 const char *odst = dst; -

33 const char *osrc = src; -

34 size_t n = dsize; -

35 size_t dlen; -

36 -

37 /* Find the end of dst and adjust bytes left but don't go past end. */ -

while (n-- != 0 && *dst != '\0')

n-- != 0	Description
TRUE	evaluated 74 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	never evaluated

*dst != '\0'	Description
TRUE	evaluated 66 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.44.0.1

0-74

dst++;

executed 66 times by 1 test: dst++;

Executed by:

libcrypto.so.44.0.1

40 dlen = dst - odst; -

41 n = dsize - dlen; -

42 -

if (n-- == 0)

n-- == 0	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.44.0.1

0-8

return(dlen + strlen(src));

never executed: return(dlen + strlen(src));

while (*src != '\0') {

*src != '\0'	Description
TRUE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.44.0.1

if (n != 0) {

n != 0	Description
TRUE	evaluated 8 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	never evaluated

0-8

47 *dst++ = *src; -

48 n--; -

}

executed 8 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

50 src++; -

}

executed 8 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

52 *dst = '\0'; -

53 -

return(dlen + (src - osrc)); /* count does not include NUL */

executed 8 times by 1 test: return(dlen + (src - osrc));

Executed by:

libcrypto.so.44.0.1

55 } -

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