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/* Checking macros for fcntl functions. |
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Copyright (C) 2007 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with the GNU C Library; if not, write to the Free |
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA. */ |
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#ifndef _FCNTL_H |
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# error "Never include directly; use instead." |
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#endif |
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/* Check that calls to open and openat with O_CREAT set have an |
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appropriate third/fourth parameter. */ |
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#ifndef __USE_FILE_OFFSET64 |
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extern int __open_2 (__const char *__path, int __oflag) __nonnull ((1)); |
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extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...), |
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open) __nonnull ((1)); |
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#else |
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extern int __REDIRECT (__open_2, (__const char *__path, int __oflag), |
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__open64_2) __nonnull ((1)); |
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extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...), |
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open64) __nonnull ((1)); |
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#endif |
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__errordecl (__open_too_many_args, |
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"open can be called either with 2 or 3 arguments, not more"); |
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__errordecl (__open_missing_mode, |
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"open with O_CREAT in second argument needs 3 arguments"); |
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__extern_always_inline int |
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open (__const char *__path, int __oflag, ...) |
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{ |
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if (__va_arg_pack_len () > 1) |
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__open_too_many_args (); |
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if (__builtin_constant_p (__oflag)) |
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{ |
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) |
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{ |
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__open_missing_mode (); |
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return __open_2 (__path, __oflag); |
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} |
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return __open_alias (__path, __oflag, __va_arg_pack ()); |
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} |
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if (__va_arg_pack_len () < 1) |
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return __open_2 (__path, __oflag); |
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return __open_alias (__path, __oflag, __va_arg_pack ()); |
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} |
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#ifdef __USE_LARGEFILE64 |
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extern int __open64_2 (__const char *__path, int __oflag) __nonnull ((1)); |
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extern int __REDIRECT (__open64_alias, (__const char *__path, int __oflag, |
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...), open64) __nonnull ((1)); |
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__errordecl (__open64_too_many_args, |
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"open64 can be called either with 2 or 3 arguments, not more"); |
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__errordecl (__open64_missing_mode, |
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"open64 with O_CREAT in second argument needs 3 arguments"); |
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__extern_always_inline int |
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open64 (__const char *__path, int __oflag, ...) |
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{ |
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if (__va_arg_pack_len () > 1) |
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__open64_too_many_args (); |
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if (__builtin_constant_p (__oflag)) |
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{ |
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) |
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{ |
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__open64_missing_mode (); |
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return __open64_2 (__path, __oflag); |
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} |
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return __open64_alias (__path, __oflag, __va_arg_pack ()); |
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} |
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if (__va_arg_pack_len () < 1) |
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return __open64_2 (__path, __oflag); |
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return __open64_alias (__path, __oflag, __va_arg_pack ()); |
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} |
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#endif |
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#ifdef __USE_ATFILE |
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# ifndef __USE_FILE_OFFSET64 |
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extern int __openat_2 (int __fd, __const char *__path, int __oflag) |
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__nonnull ((2)); |
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extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path, |
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int __oflag, ...), openat) |
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__nonnull ((2)); |
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# else |
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extern int __REDIRECT (__openat_2, (int __fd, __const char *__path, |
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int __oflag), __openat64_2) |
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__nonnull ((2)); |
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extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path, |
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int __oflag, ...), openat64) |
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__nonnull ((2)); |
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# endif |
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__errordecl (__openat_too_many_args, |
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"openat can be called either with 3 or 4 arguments, not more"); |
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__errordecl (__openat_missing_mode, |
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"openat with O_CREAT in third argument needs 4 arguments"); |
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__extern_always_inline int |
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openat (int __fd, __const char *__path, int __oflag, ...) |
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{ |
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if (__va_arg_pack_len () > 1) |
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__openat_too_many_args (); |
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if (__builtin_constant_p (__oflag)) |
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{ |
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) |
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{ |
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__openat_missing_mode (); |
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return __openat_2 (__fd, __path, __oflag); |
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} |
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return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); |
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} |
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if (__va_arg_pack_len () < 1) |
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return __openat_2 (__fd, __path, __oflag); |
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return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); |
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} |
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# ifdef __USE_LARGEFILE64 |
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extern int __openat64_2 (int __fd, __const char *__path, int __oflag) |
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__nonnull ((2)); |
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extern int __REDIRECT (__openat64_alias, (int __fd, __const char *__path, |
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int __oflag, ...), openat64) |
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__nonnull ((2)); |
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__errordecl (__openat64_too_many_args, |
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"openat64 can be called either with 3 or 4 arguments, not more"); |
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__errordecl (__openat64_missing_mode, |
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"openat64 with O_CREAT in third argument needs 4 arguments"); |
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__extern_always_inline int |
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openat64 (int __fd, __const char *__path, int __oflag, ...) |
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{ |
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if (__va_arg_pack_len () > 1) |
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__openat64_too_many_args (); |
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if (__builtin_constant_p (__oflag)) |
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{ |
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) |
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{ |
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__openat64_missing_mode (); |
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return __openat64_2 (__fd, __path, __oflag); |
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} |
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return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); |
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} |
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if (__va_arg_pack_len () < 1) |
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return __openat64_2 (__fd, __path, __oflag); |
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return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); |
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} |
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# endif |
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#endif |