2003-03-18 Ralf Corsepius <corsepiu@faw.uni-ulm.de>

* configure.ac: AC_CHECK_FUNCS(strlcpy strlcat).
	* src/strlcat.c: New (extracted from pppd/utils.c).
	* src/strlcpy.c: New (extracted from pppd/utils.c).
	* Makefile.am: Add BSD_C_FILES, strlcat.c, strlcpy.c.

cpukit/libcsupport/ChangeLog

@@ -1,3 +1,10 @@
+2003-03-18	Ralf Corsepius <corsepiu@faw.uni-ulm.de>
+
+	* configure.ac: AC_CHECK_FUNCS(strlcpy strlcat).
+	* src/strlcat.c: New (extracted from pppd/utils.c).
+	* src/strlcpy.c: New (extracted from pppd/utils.c).
+	* Makefile.am: Add BSD_C_FILES, strlcat.c, strlcpy.c.
+
 2003-03-06	Ralf Corsepius <corsepiu@faw.uni-ulm.de>
 
 	* configure.ac: Remove AC_CONFIG_AUX_DIR.

cpukit/libcsupport/Makefile.am

@@ -133,7 +133,11 @@ LIBC_GLUE_C_FILES = src/__getpid.c src/__gettod.c src/__times.c \
 
 UNIX_LIBC_C_FILES = src/unixlibc.c src/hosterr.c
 
-COMMON_C_FILES = src/gxx_wrappers.c src/printk.c $(BASE_FS_C_FILES) \
+BSD_LIBC_C_FILES = src/strlcpy.c src/strlcat.c
+
+COMMON_C_FILES = src/gxx_wrappers.c src/printk.c \
+    $(BSD_LIBC_C_FILES) \
+    $(BASE_FS_C_FILES) \
     $(MALLOC_C_FILES) $(TERMIOS_C_FILES) $(ERROR_C_FILES) \
     $(ASSOCIATION_C_FILES)
 

cpukit/libcsupport/configure.ac

@@ -71,6 +71,9 @@ AC_CHECK_DECLS([ECHOPRT],,,[#include <termios.h>])
 ## BSD-ism, excluded from POSIX, but available on most platforms
 AC_CHECK_DECLS([sbrk],,,[#include <unistd.h>])
 
+## Check if libc provides BSD's strlcpy/strlcat
+AC_CHECK_FUNCS(strlcpy strlcat)
+
 AM_CONDITIONAL([NEED_SYS_CDEFS_H],[test x"$NEED_SYS_CDEFS_H" = x"yes"])
 
 AM_CONFIG_HEADER([src/config.h])

cpukit/libcsupport/src/strlcat.c

@@ -0,0 +1,41 @@
+/*
+ * utils.c - various utility functions used in pppd.
+ *
+ * Copyright (c) 1999 The Australian National University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the Australian National University.  The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#ifndef HAVE_STRLCAT
+/*
+ * strlcat - like strcat/strncat, doesn't overflow destination buffer,
+ * always leaves destination null-terminated (for len > 0).
+ */
+size_t
+strlcat(dest, src, len)
+    char *dest;
+    const char *src;
+    size_t len;
+{
+    size_t dlen = strlen(dest);
+
+    return dlen + strlcpy(dest + dlen, src, (len > dlen? len - dlen: 0));
+}
+#endif

cpukit/libcsupport/src/strlcpy.c

@@ -0,0 +1,49 @@
+/*
+ * utils.c - various utility functions used in pppd.
+ *
+ * Copyright (c) 1999 The Australian National University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the Australian National University.  The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#ifndef HAVE_STRLCPY
+/*
+ * strlcpy - like strcpy/strncpy, doesn't overflow destination buffer,
+ * always leaves destination null-terminated (for len > 0).
+ */
+size_t
+strlcpy(dest, src, len)
+    char *dest;
+    const char *src;
+    size_t len;
+{
+    size_t ret = strlen(src);
+
+    if (len != 0) {
+	if (ret < len)
+	    strcpy(dest, src);
+	else {
+	    strncpy(dest, src, len - 1);
+	    dest[len-1] = 0;
+	}
+    }
+    return ret;
+}
+#endif