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io/getwd.c
54 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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/* Obsolete function to get current working directory. Copyright (C) 1991-2026 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 <errno.h> #include <limits.h> #include <string.h> #include <unistd.h> char * getwd (char *buf) { #ifndef PATH_MAX #define PATH_MAX 1024 #endif char tmpbuf[PATH_MAX]; if (buf == NULL) { __set_errno (EINVAL); return NULL; } if (__getcwd (tmpbuf, PATH_MAX) == NULL) { /* We use 1024 here since it should really be enough and because this is a safe value. */ __strerror_r (errno, buf, 1024); return NULL; } /* This is completely unsafe. Nobody can say how big the user provided buffer is. Perhaps the application and the libc disagree about the value of PATH_MAX. */ return strcpy (buf, tmpbuf); } link_warning (getwd, "the `getwd' function is dangerous and should not be used.")