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unistd.h
/* Checking macros for unistd functions. Copyright (C) 2005-2018 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 <http://www.gnu.org/licenses/>. */ #ifndef _UNISTD_H # error "Never include <bits/unistd.h> directly; use <unistd.h> instead." #endif extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes, size_t __buflen) __wur; extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf, size_t __nbytes), read) __wur; extern ssize_t __REDIRECT (__read_chk_warn, (int __fd, void *__buf, size_t __nbytes, size_t __buflen), __read_chk) __wur __warnattr ("read called with bigger length than size of " "the destination buffer"); __fortify_function __wur ssize_t read (int __fd, void *__buf, size_t __nbytes) { return __glibc_fortify (read, __nbytes, sizeof (char), __glibc_objsize0 (__buf), __fd, __buf, __nbytes); } #if defined __USE_UNIX98 || defined __USE_XOPEN2K8 extern ssize_t __pread_chk (int __fd, void *__buf, size_t __nbytes, __off_t __offset, size_t __bufsize) __wur; extern ssize_t __pread64_chk (int __fd, void *__buf, size_t __nbytes, __off64_t __offset, size_t __bufsize) __wur; extern ssize_t __REDIRECT (__pread_alias, (int __fd, void *__buf, size_t __nbytes, __off_t __offset), pread) __wur; extern ssize_t __REDIRECT (__pread64_alias, (int __fd, void *__buf, size_t __nbytes, __off64_t __offset), pread64) __wur; extern ssize_t __REDIRECT (__pread_chk_warn, (int __fd, void *__buf, size_t __nbytes, __off_t __offset, size_t __bufsize), __pread_chk) __wur __warnattr ("pread called with bigger length than size of " "the destination buffer"); extern ssize_t __REDIRECT (__pread64_chk_warn, (int __fd, void *__buf, size_t __nbytes, __off64_t __offset, size_t __bufsize), __pread64_chk) __wur __warnattr ("pread64 called with bigger length than size of " "the destination buffer"); # ifndef __USE_FILE_OFFSET64 __fortify_function __wur ssize_t pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset) { return __glibc_fortify (pread, __nbytes, sizeof (char), __glibc_objsize0 (__buf), __fd, __buf, __nbytes, __offset); } # else __fortify_function __wur ssize_t pread (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) { return __glibc_fortify (pread64, __nbytes, sizeof (char), __glibc_objsize0 (__buf), __fd, __buf, __nbytes, __offset); } # endif # ifdef __USE_LARGEFILE64 __fortify_function __wur ssize_t pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) { return __glibc_fortify (pread64, __nbytes, sizeof (char), __glibc_objsize0 (__buf), __fd, __buf, __nbytes, __offset); } # endif #endif #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K extern ssize_t __readlink_chk (const char *__restrict __path, char *__restrict __buf, size_t __len, size_t __buflen) __THROW __nonnull ((1, 2)) __wur; extern ssize_t __REDIRECT_NTH (__readlink_alias, (const char *__restrict __path, char *__restrict __buf, size_t __len), readlink) __nonnull ((1, 2)) __wur; extern ssize_t __REDIRECT_NTH (__readlink_chk_warn, (const char *__restrict __path, char *__restrict __buf, size_t __len, size_t __buflen), __readlink_chk) __nonnull ((1, 2)) __wur __warnattr ("readlink called with bigger length " "than size of destination buffer"); __fortify_function __nonnull ((1, 2)) __wur ssize_t __NTH (readlink (const char *__restrict __path, char *__restrict __buf, size_t __len)) { return __glibc_fortify (readlink, __len, sizeof (char), __glibc_objsize (__buf), __path, __buf, __len); } #endif #ifdef __USE_ATFILE extern ssize_t __readlinkat_chk (int __fd, const char *__restrict __path, char *__restrict __buf, size_t __len, size_t __buflen) __THROW __nonnull ((2, 3)) __wur; extern ssize_t __REDIRECT_NTH (__readlinkat_alias, (int __fd, const char *__restrict __path, char *__restrict __buf, size_t __len), readlinkat) __nonnull ((2, 3)) __wur; extern ssize_t __REDIRECT_NTH (__readlinkat_chk_warn, (int __fd, const char *__restrict __path, char *__restrict __buf, size_t __len, size_t __buflen), __readlinkat_chk) __nonnull ((2, 3)) __wur __warnattr ("readlinkat called with bigger " "length than size of destination " "buffer"); __fortify_function __nonnull ((2, 3)) __wur ssize_t __NTH (readlinkat (int __fd, const char *__restrict __path, char *__restrict __buf, size_t __len)) { return __glibc_fortify (readlinkat, __len, sizeof (char), __glibc_objsize (__buf), __fd, __path, __buf, __len); } #endif extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen) __THROW __wur; extern char *__REDIRECT_NTH (__getcwd_alias, (char *__buf, size_t __size), getcwd) __wur; extern char *__REDIRECT_NTH (__getcwd_chk_warn, (char *__buf, size_t __size, size_t __buflen), __getcwd_chk) __wur __warnattr ("getcwd caller with bigger length than size of " "destination buffer"); __fortify_function __wur char * __NTH (getcwd (char *__buf, size_t __size)) { return __glibc_fortify (getcwd, __size, sizeof (char), __glibc_objsize (__buf), __buf, __size); } #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED extern char *__getwd_chk (char *__buf, size_t buflen) __THROW __nonnull ((1)) __wur; extern char *__REDIRECT_NTH (__getwd_warn, (char *__buf), getwd) __nonnull ((1)) __wur __warnattr ("please use getcwd instead, as getwd " "doesn't specify buffer size"); __fortify_function __nonnull ((1)) __attribute_deprecated__ __wur char * __NTH (getwd (char *__buf)) { if (__glibc_objsize (__buf) != (size_t) -1) return __getwd_chk (__buf, __glibc_objsize (__buf)); return __getwd_warn (__buf); } #endif extern size_t __confstr_chk (int __name, char *__buf, size_t __len, size_t __buflen) __THROW; extern size_t __REDIRECT_NTH (__confstr_alias, (int __name, char *__buf, size_t __len), confstr); extern size_t __REDIRECT_NTH (__confstr_chk_warn, (int __name, char *__buf, size_t __len, size_t __buflen), __confstr_chk) __warnattr ("confstr called with bigger length than size of destination " "buffer"); __fortify_function size_t __NTH (confstr (int __name, char *__buf, size_t __len)) { return __glibc_fortify (confstr, __len, sizeof (char), __glibc_objsize (__buf), __name, __buf, __len); } extern int __getgroups_chk (int __size, __gid_t __list[], size_t __listlen) __THROW __wur; extern int __REDIRECT_NTH (__getgroups_alias, (int __size, __gid_t __list[]), getgroups) __wur; extern int __REDIRECT_NTH (__getgroups_chk_warn, (int __size, __gid_t __list[], size_t __listlen), __getgroups_chk) __wur __warnattr ("getgroups called with bigger group count than what " "can fit into destination buffer"); __fortify_function int __NTH (getgroups (int __size, __gid_t __list[])) { return __glibc_fortify (getgroups, __size, sizeof (__gid_t), __glibc_objsize (__list), __size, __list); } extern int __ttyname_r_chk (int __fd, char *__buf, size_t __buflen, size_t __nreal) __THROW __nonnull ((2)); extern int __REDIRECT_NTH (__ttyname_r_alias, (int __fd, char *__buf, size_t __buflen), ttyname_r) __nonnull ((2)); extern int __REDIRECT_NTH (__ttyname_r_chk_warn, (int __fd, char *__buf, size_t __buflen, size_t __nreal), __ttyname_r_chk) __nonnull ((2)) __warnattr ("ttyname_r called with bigger buflen than " "size of destination buffer"); __fortify_function int __NTH (ttyname_r (int __fd, char *__buf, size_t __buflen)) { return __glibc_fortify (ttyname_r, __buflen, sizeof (char), __glibc_objsize (__buf), __fd, __buf, __buflen); } #ifdef __USE_POSIX199506 extern int __getlogin_r_chk (char *__buf, size_t __buflen, size_t __nreal) __nonnull ((1)); extern int __REDIRECT (__getlogin_r_alias, (char *__buf, size_t __buflen), getlogin_r) __nonnull ((1)); extern int __REDIRECT (__getlogin_r_chk_warn, (char *__buf, size_t __buflen, size_t __nreal), __getlogin_r_chk) __nonnull ((1)) __warnattr ("getlogin_r called with bigger buflen than " "size of destination buffer"); __fortify_function int getlogin_r (char *__buf, size_t __buflen) { return __glibc_fortify (getlogin_r, __buflen, sizeof (char), __glibc_objsize (__buf), __buf, __buflen); } #endif #if defined __USE_MISC || defined __USE_UNIX98 extern int __gethostname_chk (char *__buf, size_t __buflen, size_t __nreal) __THROW __nonnull ((1)); extern int __REDIRECT_NTH (__gethostname_alias, (char *__buf, size_t __buflen), gethostname) __nonnull ((1)); extern int __REDIRECT_NTH (__gethostname_chk_warn, (char *__buf, size_t __buflen, size_t __nreal), __gethostname_chk) __nonnull ((1)) __warnattr ("gethostname called with bigger buflen than " "size of destination buffer"); __fortify_function int __NTH (gethostname (char *__buf, size_t __buflen)) { return __glibc_fortify (gethostname, __buflen, sizeof (char), __glibc_objsize (__buf), __buf, __buflen); } #endif #if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_UNIX98) extern int __getdomainname_chk (char *__buf, size_t __buflen, size_t __nreal) __THROW __nonnull ((1)) __wur; extern int __REDIRECT_NTH (__getdomainname_alias, (char *__buf, size_t __buflen), getdomainname) __nonnull ((1)) __wur; extern int __REDIRECT_NTH (__getdomainname_chk_warn, (char *__buf, size_t __buflen, size_t __nreal), __getdomainname_chk) __nonnull ((1)) __wur __warnattr ("getdomainname called with bigger " "buflen than size of destination " "buffer"); __fortify_function int __NTH (getdomainname (char *__buf, size_t __buflen)) { return __glibc_fortify (getdomainname, __buflen, sizeof (char), __glibc_objsize (__buf), __buf, __buflen); } #endif
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