1 #ifndef _ERRNO_H
2 #include <stdlib/errno.h>
3 #if !defined _ISOMAC && !defined __ASSEMBLER__
4 
5 # if IS_IN (rtld)
6 #  include <dl-sysdep.h>
7 #  ifndef RTLD_PRIVATE_ERRNO
8 #   error "dl-sysdep.h must define RTLD_PRIVATE_ERRNO!"
9 #  endif
10 # else
11 #  define RTLD_PRIVATE_ERRNO	0
12 # endif
13 
14 # if RTLD_PRIVATE_ERRNO
15 /* The dynamic linker uses its own private errno variable.
16    All access to errno inside the dynamic linker is serialized,
17    so a single (hidden) global variable is all it needs.  */
18 
19 #  undef  errno
20 #  define errno rtld_errno
21 extern int rtld_errno attribute_hidden;
22 
23 # elif IS_IN_LIB && !IS_IN (rtld)
24 
25 #  undef  errno
26 #  if IS_IN (libc)
27 #   define errno __libc_errno
28 #  else
29 #   define errno errno		/* For #ifndef errno tests.  */
30 #  endif
31 extern __thread int errno attribute_tls_model_ie;
32 
33 # endif	/* IS_IN_LIB */
34 
35 # define __set_errno(val) (errno = (val))
36 
37 extern int *__errno_location (void) __THROW __attribute_const__
38 #  if RTLD_PRIVATE_ERRNO
39      attribute_hidden
40 #  endif
41 ;
42 libc_hidden_proto (__errno_location)
43 
44 #endif /* !_ISOMAC && !__ASSEMBLER__ */
45 #endif /* !_ERRNO_H */
46