Change existing uses of strlcpy()/strlcat() to use new my_strlcpy()/

my_strlcat() API.  Convert ext/File/Glob/bsd_glob.c to use 
my_strlcat().  Add to the strlcy()/strlcat() todo entry.

p4raw-id: //depot/perl@28528

5 files changed, 20 insertions, 73 deletions

diff --git a/doio.c b/doio.c
index 8a04766f09..1fcb165065 100644
--- a/doio.c
+++ b/doio.c
@@ -258,17 +258,10 @@ Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw,
 	    }
 	    mode[0] = 'w';
 	    writing = 1;
-#ifdef HAS_STRLCAT
             if (out_raw)
-                strlcat(mode, "b", PERL_MODE_MAX - 1);
+                my_strlcat(mode, "b", PERL_MODE_MAX - 1);
             else if (out_crlf)
-                strlcat(mode, "t", PERL_MODE_MAX - 1); 
-#else
-	    if (out_raw)
-		strcat(mode, "b");
-	    else if (out_crlf)
-		strcat(mode, "t");
-#endif
+                my_strlcat(mode, "t", PERL_MODE_MAX - 1); 
 	    if (num_svs > 1) {
 		fp = PerlProc_popen_list(mode, num_svs, svp);
 	    }
@@ -296,17 +289,10 @@ Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw,
 	    }
 	    writing = 1;
 
-#ifdef HAS_STRLCAT
             if (out_raw)
-                strlcat(mode, "b", PERL_MODE_MAX - 1);
+                my_strlcat(mode, "b", PERL_MODE_MAX - 1);
             else if (out_crlf)
-                strlcat(mode, "t", PERL_MODE_MAX - 1);
-#else
-	    if (out_raw)
-		strcat(mode, "b");
-	    else if (out_crlf)
-		strcat(mode, "t");
-#endif
+                my_strlcat(mode, "t", PERL_MODE_MAX - 1);
 	    if (*type == '&') {
 	      duplicity:
 		dodup = PERLIO_DUP_FD;
@@ -429,17 +415,10 @@ Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw,
 		type++;
 	    } while (isSPACE(*type));
 	    mode[0] = 'r';
-#ifdef HAS_STRLCAT
             if (in_raw)
-                strlcat(mode, "b", PERL_MODE_MAX - 1);
+                my_strlcat(mode, "b", PERL_MODE_MAX - 1);
             else if (in_crlf)
-                strlcat(mode, "t", PERL_MODE_MAX - 1);
-#else
-	    if (in_raw)
-		strcat(mode, "b");
-	    else if (in_crlf)
-		strcat(mode, "t");
-#endif
+                my_strlcat(mode, "t", PERL_MODE_MAX - 1);
 	    if (*type == '&') {
 		goto duplicity;
 	    }
@@ -490,17 +469,10 @@ Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw,
 	    TAINT_PROPER("piped open");
 	    mode[0] = 'r';
 
-#ifdef HAS_STRLCAT
             if (in_raw)
-                strlcat(mode, "b", PERL_MODE_MAX - 1);
+                my_strlcat(mode, "b", PERL_MODE_MAX - 1);
             else if (in_crlf)
-                strlcat(mode, "t", PERL_MODE_MAX - 1);
-#else
-	    if (in_raw)
-		strcat(mode, "b");
-	    else if (in_crlf)
-		strcat(mode, "t");
-#endif
+                my_strlcat(mode, "t", PERL_MODE_MAX - 1);
 
 	    if (num_svs > 1) {
 		fp = PerlProc_popen_list(mode,num_svs,svp);
@@ -528,17 +500,10 @@ Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw,
 		;
 	    mode[0] = 'r';
 
-#ifdef HAS_STRLCAT
             if (in_raw)
-                strlcat(mode, "b", PERL_MODE_MAX - 1);
+                my_strlcat(mode, "b", PERL_MODE_MAX - 1);
             else if (in_crlf)
-                strlcat(mode, "t", PERL_MODE_MAX - 1);
-#else
-	    if (in_raw)
-		strcat(mode, "b");
-	    else if (in_crlf)
-		strcat(mode, "t");
-#endif
+                my_strlcat(mode, "t", PERL_MODE_MAX - 1);
 
 	    if (*name == '-' && name[1] == '\0') {
 		fp = PerlIO_stdin();
@@ -1493,19 +1458,11 @@ Perl_do_exec3(pTHX_ const char *incmd, int fd, int do_report)
         char flags[PERL_FLAGS_MAX];
 	if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
 	    strnEQ(cmd+PL_cshlen," -c",3)) {
-#ifdef HAS_STRLCPY
-          strlcpy(flags, "-c", PERL_FLAGS_MAX);
-#else
-	  strcpy(flags,"-c");
-#endif
+          my_strlcpy(flags, "-c", PERL_FLAGS_MAX);
 	  s = cmd+PL_cshlen+3;
 	  if (*s == 'f') {
 	      s++;
-#ifdef HAS_STRLCPY
-              strlcat(flags, "f", PERL_FLAGS_MAX - 2);
-#else
-	      strcat(flags,"f");
-#endif
+              my_strlcat(flags, "f", PERL_FLAGS_MAX - 2);
 	  }
 	  if (*s == ' ')
 	      s++;
@@ -2317,7 +2274,7 @@ Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
 	STRLEN len;
 
 	const char *mbuf = SvPV_const(mstr, len);
-	const I32 n = ((I32)len > msize) ? msize : (I32)len;
+	const I32 n = (len > msize) ? msize : len;
 	Copy(mbuf, shm + mpos, n, char);
 	if (n < msize)
 	    memzero(shm + mpos + n, msize - n);
diff --git a/ext/File/Glob/bsd_glob.c b/ext/File/Glob/bsd_glob.c
index 78a8c647ec..c1dbd2c093 100644
--- a/ext/File/Glob/bsd_glob.c
+++ b/ext/File/Glob/bsd_glob.c
@@ -1131,9 +1131,9 @@ g_opendir(register Char *str, glob_t *pglob)
 
 	if (!*str) {
 #ifdef MACOS_TRADITIONAL
-		strcpy(buf, ":");
+		my_strlcpy(buf, ":", sizeof(buf));
 #else
-		strcpy(buf, ".");
+		my_strlcpy(buf, ".", sizeof(buf));
 #endif
 	} else {
 		if (g_Ctoc(str, buf, sizeof(buf)))
diff --git a/pod/perltodo.pod b/pod/perltodo.pod
index bade067a1c..9ffb62880d 100644
--- a/pod/perltodo.pod
+++ b/pod/perltodo.pod
@@ -622,7 +622,9 @@ source filters.  All this could be fixed.
 
 =head2 Integrate Russ Allbery's strlcat/strlcpy implementation
 
-And remove the last remaining uses of strcat() and strcpy().
+And remove the last remaining uses of strcat() and strcpy().  Also, add
+my_strlcat() and my_strlcpy() to Devel::PPPort so previous versions of Perl can
+use these APIs. 
 
 =head1 Big projects
 
diff --git a/pp_ctl.c b/pp_ctl.c
index 929f5a27e2..1f9fa4a4b8 100644
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -3423,9 +3423,7 @@ PP(pp_entereval)
     U32 seq;
     HV *saved_hh = NULL;
     const char * const fakestr = "_<(eval )";
-#ifdef HAS_STRLCPY
     const int fakelen = 9 + 1;
-#endif
     
     if (PL_op->op_private & OPpEVAL_HAS_HH) {
 	saved_hh = (HV*) SvREFCNT_inc(POPs);
@@ -3498,11 +3496,7 @@ PP(pp_entereval)
     if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */
 	&& ret != PL_op->op_next) {	/* Successive compilation. */
 	/* Copy in anything fake and short. */
-#ifdef HAS_STRLCPY
-	strlcpy(safestr, fakestr, fakelen);
-#else
-	strcpy(safestr, fakestr);
-#endif /* #ifdef HAS_STRLCPY */
+	my_strlcpy(safestr, fakestr, fakelen);
     }
     return DOCATCH(ret);
 }
diff --git a/util.c b/util.c
index 6e291d310f..7a3be16a09 100644
--- a/util.c
+++ b/util.c
@@ -3118,13 +3118,7 @@ Perl_find_script(pTHX_ const char *scriptname, bool dosearch,
 	    if (len == 2 && tmpbuf[0] == '.')
 		seen_dot = 1;
 #endif
-#ifdef HAS_STRLCAT
-	    (void)strlcpy(tmpbuf + len, scriptname, sizeof(tmpbuf) - len);
-#else
-	    /* FIXME? Convert to memcpy by storing previous strlen(scriptname)
-	     */
-	    (void)strcpy(tmpbuf + len, scriptname);
-#endif /* #ifdef HAS_STRLCAT */
+	    (void)my_strlcpy(tmpbuf + len, scriptname, sizeof(tmpbuf) - len);
 #endif  /* !VMS */
 
 #ifdef SEARCH_EXTS