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sysvipc/ftok.c
34 строки
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Copyright (C) 1995-2026 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #include <sys/ipc.h> #include <sys/stat.h> key_t ftok (const char *pathname, int proj_id) { struct __stat64_t64 st; key_t key; if (__stat64_time64 (pathname, &st) < 0) return (key_t) -1; key = ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((proj_id & 0xff) << 24)); return key; }