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-rw-r--r--io/bits/fcntl2.h248
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
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