diff options
Diffstat (limited to 'posix/bits')
| -rw-r--r-- | posix/bits/unistd.h | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/posix/bits/unistd.h b/posix/bits/unistd.h new file mode 100644 index 0000000..b08aef2 --- /dev/null +++ b/posix/bits/unistd.h @@ -0,0 +1,250 @@ +/* Checking macros for unistd functions. + Copyright (C) 2005, 2006 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#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 __always_inline __wur ssize_t +read (int __fd, void *__buf, size_t __nbytes) +{ + if (__bos0 (__buf) != (size_t) -1 + && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) + return __read_chk (__fd, __buf, __nbytes, __bos0 (__buf)); + return __read_alias (__fd, __buf, __nbytes); +} + +#ifdef __USE_UNIX98 +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; + +# ifndef __USE_FILE_OFFSET64 +extern __always_inline __wur ssize_t +pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset) +{ + if (__bos0 (__buf) != (size_t) -1 + && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) + return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + return __pread_alias (__fd, __buf, __nbytes, __offset); +} +# else +extern __always_inline __wur ssize_t +pread (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) +{ + if (__bos0 (__buf) != (size_t) -1 + && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) + return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + return __pread64_alias (__fd, __buf, __nbytes, __offset); +} +# endif + +# ifdef __USE_LARGEFILE64 +extern __always_inline __wur ssize_t +pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset) +{ + if (__bos0 (__buf) != (size_t) -1 + && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf))) + return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf)); + return __pread64_alias (__fd, __buf, __nbytes, __offset); +} +# endif +#endif + +#if defined __USE_BSD || 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 __always_inline __nonnull ((1, 2)) __wur ssize_t +__NTH (readlink (__const char *__restrict __path, char *__restrict __buf, + size_t __len)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__len) || __len > __bos (__buf))) + return __readlink_chk (__path, __buf, __len, __bos (__buf)); + return __readlink_alias (__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 __always_inline __nonnull ((2, 3)) __wur ssize_t +__NTH (readlinkat (int __fd, __const char *__restrict __path, + char *__restrict __buf, size_t __len)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__len) || __len > __bos (__buf))) + return __readlinkat_chk (__fd, __path, __buf, __len, __bos (__buf)); + return __readlinkat_alias (__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 __always_inline __wur char * +__NTH (getcwd (char *__buf, size_t __size)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__size) || __size > __bos (__buf))) + return __getcwd_chk (__buf, __size, __bos (__buf)); + return __getcwd_alias (__buf, __size); +} + +#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED +extern char *__getwd_chk (char *__buf, size_t buflen) + __THROW __nonnull ((1)) __wur; +extern char *__REDIRECT_NTH (__getwd_alias, (char *__buf), getwd) + __nonnull ((1)) __wur; + +extern __always_inline __nonnull ((1)) __attribute_deprecated__ __wur char * +__NTH (getwd (char *__buf)) +{ + if (__bos (__buf) != (size_t) -1) + return __getwd_chk (__buf, __bos (__buf)); + return __getwd_alias (__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 __always_inline size_t +__NTH (confstr (int __name, char *__buf, size_t __len)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__len) || __bos (__buf) < __len)) + return __confstr_chk (__name, __buf, __len, __bos (__buf)); + return __confstr_alias (__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 __always_inline int +__NTH (getgroups (int __size, __gid_t __list[])) +{ + if (__bos (__list) != (size_t) -1 + && (!__builtin_constant_p (__size) + || __size * sizeof (__gid_t) > __bos (__list))) + return __getgroups_chk (__size, __list, __bos (__list)); + return __getgroups_alias (__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 __always_inline int +__NTH (ttyname_r (int __fd, char *__buf, size_t __buflen)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) + return __ttyname_r_chk (__fd, __buf, __buflen, __bos (__buf)); + return __ttyname_r_alias (__fd, __buf, __buflen); +} + + +#if defined __USE_REENTRANT || defined __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 __always_inline int +getlogin_r (char *__buf, size_t __buflen) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) + return __getlogin_r_chk (__buf, __buflen, __bos (__buf)); + return __getlogin_r_alias (__buf, __buflen); +} +#endif + + +#if defined __USE_BSD || 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 __always_inline int +__NTH (gethostname (char *__buf, size_t __buflen)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) + return __gethostname_chk (__buf, __buflen, __bos (__buf)); + return __gethostname_alias (__buf, __buflen); +} +#endif + + +#if defined __USE_BSD || (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 __always_inline int +__NTH (getdomainname (char *__buf, size_t __buflen)) +{ + if (__bos (__buf) != (size_t) -1 + && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) + return __getdomainname_chk (__buf, __buflen, __bos (__buf)); + return __getdomainname_alias (__buf, __buflen); +} +#endif |