diff options
Diffstat (limited to 'io/bits/fcntl2.h')
| -rw-r--r-- | io/bits/fcntl2.h | 248 |
1 files changed, 118 insertions, 130 deletions
diff --git a/io/bits/fcntl2.h b/io/bits/fcntl2.h index 5b9fcd5e71..fbe85852cc 100644 --- a/io/bits/fcntl2.h +++ b/io/bits/fcntl2.h @@ -25,161 +25,149 @@ appropriate third/fourth parameter. */ #ifndef __USE_FILE_OFFSET64 extern int __open_2 (__const char *__path, int __oflag) __nonnull ((1)); +extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...), + open) __nonnull ((1)); #else -extern int __REDIRECT (__open_2, (__const char *__file, int __oflag), +extern int __REDIRECT (__open_2, (__const char *__path, int __oflag), __open64_2) __nonnull ((1)); +extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...), + open64) __nonnull ((1)); #endif +__errordecl (__open_too_many_args, + "open can be called either with 2 or 3 arguments, not more"); +__errordecl (__open_missing_mode, + "open with O_CREAT in second argument needs 3 arguments"); -#define open(fname, flags, ...) \ - (__extension__ \ - ({ int ___r; \ - /* If the compiler complains about an invalid type, excess elements, \ - etc. in the initialization this means a parameter of the wrong type \ - has been passed to open. */ \ - int ___arr[] = { __VA_ARGS__ }; \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \ - { \ - /* If the compiler complains about the size of this array type the \ - mode parameter is missing since O_CREAT has been used. */ \ - typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \ - ? ((long int) sizeof (___arr) \ - - (long int) sizeof (int)) : 1];\ - } \ - if (sizeof (___arr) == 0) \ - { \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \ - ___r = open (fname, flags); \ - else \ - ___r = __open_2 (fname, flags); \ - } \ - else \ - { \ - /* If the compiler complains about the size of this array type too \ - many parameters have been passed to open. */ \ - typedef int __open_too_many_args[-(sizeof (___arr) \ - > sizeof (int))]; \ - ___r = open (fname, flags, ___arr[0]); \ - } \ - ___r; \ - })) +__extern_always_inline int +open (__const char *__path, int __oflag, ...) +{ + if (__va_arg_pack_len () > 1) + __open_too_many_args (); + + if (__builtin_constant_p (__oflag)) + { + if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) + { + __open_missing_mode (); + return __open_2 (__path, __oflag); + } + return __open_alias (__path, __oflag, __va_arg_pack ()); + } + + if (__va_arg_pack_len () < 1) + return __open_2 (__path, __oflag); + + return __open_alias (__path, __oflag, __va_arg_pack ()); +} #ifdef __USE_LARGEFILE64 extern int __open64_2 (__const char *__path, int __oflag) __nonnull ((1)); +extern int __REDIRECT (__open64_alias, (__const char *__path, int __oflag, + ...), open64) __nonnull ((1)); +__errordecl (__open64_too_many_args, + "open64 can be called either with 2 or 3 arguments, not more"); +__errordecl (__open64_missing_mode, + "open64 with O_CREAT in second argument needs 3 arguments"); + +__extern_always_inline int +open64 (__const char *__path, int __oflag, ...) +{ + if (__va_arg_pack_len () > 1) + __open64_too_many_args (); -# define open64(fname, flags, ...) \ - (__extension__ \ - ({ int ___r; \ - /* If the compiler complains about an invalid type, excess elements, \ - etc. in the initialization this means a parameter of the wrong type \ - has been passed to open64. */ \ - int ___arr[] = { __VA_ARGS__ }; \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \ - { \ - /* If the compiler complains about the size of this array type the \ - mode parameter is missing since O_CREAT has been used. */ \ - typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \ - ? ((long int) sizeof (___arr) \ - - (long int) sizeof (int)) : 1];\ - } \ - if (sizeof (___arr) == 0) \ - { \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \ - ___r = open64 (fname, flags); \ - else \ - ___r = __open64_2 (fname, flags); \ - } \ - else \ - { \ - /* If the compiler complains about the size of this array type too \ - many parameters have been passed to open64. */ \ - typedef int __open_too_many_args[-(sizeof (___arr) \ - > sizeof (int))]; \ - ___r = open64 (fname, flags, ___arr[0]); \ - } \ - ___r; \ - })) + if (__builtin_constant_p (__oflag)) + { + if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) + { + __open64_missing_mode (); + return __open64_2 (__path, __oflag); + } + return __open64_alias (__path, __oflag, __va_arg_pack ()); + } + + if (__va_arg_pack_len () < 1) + return __open64_2 (__path, __oflag); + + return __open64_alias (__path, __oflag, __va_arg_pack ()); +} #endif + #ifdef __USE_ATFILE # ifndef __USE_FILE_OFFSET64 extern int __openat_2 (int __fd, __const char *__path, int __oflag) __nonnull ((2)); +extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path, + int __oflag, ...), openat) + __nonnull ((2)); # else -extern int __REDIRECT (__openat_2, (int __fd, __const char *__file, +extern int __REDIRECT (__openat_2, (int __fd, __const char *__path, int __oflag), __openat64_2) __nonnull ((2)); +extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path, + int __oflag, ...), openat64) + __nonnull ((2)); # endif +__errordecl (__openat_too_many_args, + "openat can be called either with 3 or 4 arguments, not more"); +__errordecl (__openat_missing_mode, + "openat with O_CREAT in third argument needs 4 arguments"); + +__extern_always_inline int +openat (int __fd, __const char *__path, int __oflag, ...) +{ + if (__va_arg_pack_len () > 1) + __openat_too_many_args (); + + if (__builtin_constant_p (__oflag)) + { + if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) + { + __openat_missing_mode (); + return __openat_2 (__fd, __path, __oflag); + } + return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); + } + + if (__va_arg_pack_len () < 1) + return __openat_2 (__fd, __path, __oflag); -# define openat(fd, fname, flags, ...) \ - (__extension__ \ - ({ int ___r; \ - /* If the compiler complains about an invalid type, excess elements, \ - etc. in the initialization this means a parameter of the wrong type \ - has been passed to openat. */ \ - int ___arr[] = { __VA_ARGS__ }; \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \ - { \ - /* If the compiler complains about the size of this array type the \ - mode parameter is missing since O_CREAT has been used. */ \ - typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \ - ? ((long int) sizeof (___arr) \ - - (long int) sizeof (int)) : 1];\ - } \ - if (sizeof (___arr) == 0) \ - { \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \ - ___r = openat (fd, fname, flags); \ - else \ - ___r = __openat_2 (fd, fname, flags); \ - } \ - else \ - { \ - /* If the compiler complains about the size of this array type too \ - many parameters have been passed to openat. */ \ - typedef int __open_too_many_args[-(sizeof (___arr) \ - > sizeof (int))]; \ - ___r = openat (fd, fname, flags, ___arr[0]); \ - } \ - ___r; \ - })) + return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); +} # ifdef __USE_LARGEFILE64 extern int __openat64_2 (int __fd, __const char *__path, int __oflag) __nonnull ((2)); +extern int __REDIRECT (__openat64_alias, (int __fd, __const char *__path, + int __oflag, ...), openat64) + __nonnull ((2)); +__errordecl (__openat64_too_many_args, + "openat64 can be called either with 3 or 4 arguments, not more"); +__errordecl (__openat64_missing_mode, + "openat64 with O_CREAT in third argument needs 4 arguments"); + +__extern_always_inline int +openat64 (int __fd, __const char *__path, int __oflag, ...) +{ + if (__va_arg_pack_len () > 1) + __openat64_too_many_args (); + + if (__builtin_constant_p (__oflag)) + { + if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1) + { + __openat64_missing_mode (); + return __openat64_2 (__fd, __path, __oflag); + } + return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); + } + + if (__va_arg_pack_len () < 1) + return __openat64_2 (__fd, __path, __oflag); -# define openat64(fd, fname, flags, ...) \ - (__extension__ \ - ({ int ___r; \ - /* If the compiler complains about an invalid type, excess elements, \ - etc. in the initialization this means a parameter of the wrong type \ - has been passed to openat64. */ \ - int ___arr[] = { __VA_ARGS__ }; \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \ - { \ - /* If the compiler complains about the size of this array type the \ - mode parameter is missing since O_CREAT has been used. */ \ - typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \ - ? ((long int) sizeof (___arr) \ - - (long int) sizeof (int)) : 1];\ - } \ - if (sizeof (___arr) == 0) \ - { \ - if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \ - ___r = openat64 (fd, fname, flags); \ - else \ - ___r = __openat64_2 (fd, fname, flags); \ - } \ - else \ - { \ - /* If the compiler complains about the size of this array type too \ - many parameters have been passed to openat64. */ \ - typedef int __open_too_many_args[-(sizeof (___arr) \ - > sizeof (int))]; \ - ___r = openat64 (fd, fname, flags, ___arr[0]); \ - } \ - ___r; \ - })) + return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); +} # endif #endif |