Libc-1272.250.1.tar.gz

[apple/libc.git] / stdio / FreeBSD / fseek.c

diff --git a/stdio/FreeBSD/fseek.c b/stdio/FreeBSD/fseek.c
index 3ff409bca3ca25c18bcfda75617967c79f84eb4a..9f45c9b358a3ec536fbc941161899d8bfce560c9 100644 (file)
--- a/stdio/FreeBSD/fseek.c
+++ b/stdio/FreeBSD/fseek.c
@@ -13,10 +13,6 @@
  * 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. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *     This product includes software developed by the University of
- *     California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
@@ -38,7 +34,7 @@
 static char sccsid[] = "@(#)fseek.c    8.3 (Berkeley) 1/2/94";
 #endif /* LIBC_SCCS and not lint */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdio/fseek.c,v 1.40 2002/03/22 21:53:04 obrien Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdio/fseek.c,v 1.44 2008/04/17 22:17:54 jhb Exp $");
 
 #include "namespace.h"
 #include <sys/types.h>
@@ -64,8 +60,7 @@ fseek(fp, offset, whence)
        int serrno = errno;
 
        /* make sure stdio is set up */
-       if (!__sdidinit)
-               __sinit();
+       pthread_once(&__sdidinit, __sinit);
 
        FLOCKFILE(fp);
        ret = _fseeko(fp, (off_t)offset, whence, 1);
@@ -85,8 +80,7 @@ fseeko(fp, offset, whence)
        int serrno = errno;
 
        /* make sure stdio is set up */
-       if (!__sdidinit)
-               __sinit();
+       pthread_once(&__sdidinit, __sinit);
 
        FLOCKFILE(fp);
        ret = _fseeko(fp, offset, whence, 0);
@@ -237,7 +231,7 @@ _fseeko(fp, offset, whence, ltest)
         */
        if (HASUB(fp)) {
                curoff += fp->_r;       /* kill off ungetc */
-               n = fp->_extra->_up - fp->_bf._base;
+               n = fp->_up - fp->_bf._base;
                curoff -= n;
                n += fp->_ur;
        } else {
@@ -259,6 +253,7 @@ _fseeko(fp, offset, whence, ltest)
                if (HASUB(fp))
                        FREEUB(fp);
                fp->_flags &= ~__SEOF;
+               memset(&fp->_mbstate, 0, sizeof(mbstate_t));
                return (0);
        }
 
@@ -286,6 +281,7 @@ abspos:
                fp->_r -= n;
        }
        fp->_flags &= ~__SEOF;
+       memset(&fp->_mbstate, 0, sizeof(mbstate_t));
        return (0);
 
        /*
@@ -296,6 +292,11 @@ dumb:
        if (__sflush(fp) ||
            (ret = _sseek(fp, (fpos_t)offset, whence)) == POS_ERR)
                return (-1);
+       if (ltest && ret > LONG_MAX) {
+               fp->_flags |= __SERR;
+               errno = EOVERFLOW;
+               return (-1);
+       }
        /* success: clear EOF indicator and discard ungetc() data */
        if (HASUB(fp))
                FREEUB(fp);
@@ -303,10 +304,6 @@ dumb:
        fp->_r = 0;
        /* fp->_w = 0; */       /* unnecessary (I think...) */
        fp->_flags &= ~__SEOF;
-       if (ltest && ret > LONG_MAX) {
-               fp->_flags |= __SERR;
-               errno = EOVERFLOW;
-               return (-1);
-       }
+       memset(&fp->_mbstate, 0, sizeof(mbstate_t));
        return (0);
 }