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view lib/ftell.c @ 17362:7a2e583edf71
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author | Karl Berry <karl@freefriends.org> |
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date | Tue, 19 Mar 2013 10:47:12 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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/* An ftell() function that works around platform bugs. Copyright (C) 2007-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> /* Specification. */ #include <stdio.h> #include <errno.h> #include <limits.h> long ftell (FILE *fp) { /* Use the replacement ftello function with all its workarounds. */ off_t offset = ftello (fp); if (LONG_MIN <= offset && offset <= LONG_MAX) return /* (long) */ offset; else { errno = EOVERFLOW; return -1; } }