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-rw-r--r--lib/libc/gen/basename.351
-rw-r--r--lib/libc/gen/basename.c71
2 files changed, 54 insertions, 68 deletions
diff --git a/lib/libc/gen/basename.3 b/lib/libc/gen/basename.3
index 4a3743a..bcdd99e 100644
--- a/lib/libc/gen/basename.3
+++ b/lib/libc/gen/basename.3
@@ -1,33 +1,22 @@
+.\" $OpenBSD: basename.3,v 1.20 2007/05/31 19:19:28 jmc Exp $
.\"
.\" Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
-.\" All rights reserved.
.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. The name of the author may not be used to endorse or promote products
-.\" derived from this software without specific prior written permission.
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
.\"
-.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
-.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
-.\" AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
-.\" THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-.\" EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.\" $OpenBSD: basename.3,v 1.12 2000/04/18 03:01:25 aaron Exp $
.\" $FreeBSD$
.\"
-.Dd October 6, 2009
+.Dd March 31, 2010
.Dt BASENAME 3
.Os
.Sh NAME
@@ -42,8 +31,7 @@
.Sh DESCRIPTION
The
.Fn basename
-function
-returns the last component from the pathname pointed to by
+function returns the last component from the pathname pointed to by
.Fa path ,
deleting any trailing
.Sq \&/
@@ -111,4 +99,15 @@ function first appeared in
and
.Fx 4.2 .
.Sh AUTHORS
-.An "Todd C. Miller" Aq Todd.Miller@courtesan.com
+.An Todd C. Miller
+.Sh CAVEATS
+.Fn basename
+returns a pointer to internal static storage space that will be overwritten
+by subsequent calls.
+.Pp
+Other vendor implementations of
+.Fn basename
+may modify the contents of the string passed to
+.Fn basename ;
+this should be taken into account when writing code which calls this function
+if portability is desired.
diff --git a/lib/libc/gen/basename.c b/lib/libc/gen/basename.c
index 9588c28..f2bfe5f 100644
--- a/lib/libc/gen/basename.c
+++ b/lib/libc/gen/basename.c
@@ -1,35 +1,21 @@
+/* $OpenBSD: basename.c,v 1.14 2005/08/08 08:05:33 espie Exp $ */
+
/*
- * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
+ * Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#if 0
-#ifndef lint
-static char rcsid[] = "$OpenBSD: basename.c,v 1.4 1999/05/30 17:10:30 espie Exp $";
-#endif /* not lint */
-#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
@@ -40,27 +26,28 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
char *
-basename_r(path, bname)
- const char *path;
- char *bname;
+basename_r(const char *path, char *bname)
{
const char *endp, *startp;
+ size_t len;
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
- (void)strcpy(bname, ".");
- return(bname);
+ bname[0] = '.';
+ bname[1] = '\0';
+ return (bname);
}
- /* Strip trailing slashes */
+ /* Strip any trailing slashes */
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/')
endp--;
/* All slashes becomes "/" */
if (endp == path && *endp == '/') {
- (void)strcpy(bname, "/");
- return(bname);
+ bname[0] = '/';
+ bname[1] = '\0';
+ return (bname);
}
/* Find the start of the base */
@@ -68,18 +55,18 @@ basename_r(path, bname)
while (startp > path && *(startp - 1) != '/')
startp--;
- if (endp - startp + 2 > MAXPATHLEN) {
+ len = endp - startp + 1;
+ if (len >= MAXPATHLEN) {
errno = ENAMETOOLONG;
- return(NULL);
+ return (NULL);
}
- (void)strncpy(bname, startp, endp - startp + 1);
- bname[endp - startp + 1] = '\0';
- return(bname);
+ memcpy(bname, startp, len);
+ bname[len] = '\0';
+ return (bname);
}
char *
-basename(path)
- const char *path;
+basename(const char *path)
{
static char *bname = NULL;
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