errno.h 2.2 KB

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  1. //
  2. // Copyright 2026 Aarav Ravindra Kharade
  3. //
  4. // Licensed under the Apache License, Version 2.0 (the "License");
  5. // you may not use this file except in compliance with the License.
  6. // You may obtain a copy of the License at
  7. //
  8. // http://www.apache.org/licenses/LICENSE-2.0
  9. //
  10. // Unless required by applicable law or agreed to in writing, software
  11. // distributed under the License is distributed on an "AS IS" BASIS,
  12. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. // See the License for the specific language governing permissions and
  14. // limitations under the License.
  15. //
  16. /* Copyright (C) 1991-2026 Free Software Foundation, Inc.
  17. This file is part of the GNU C Library.
  18. The GNU C Library is free software; you can redistribute it and/or
  19. modify it under the terms of the GNU Lesser General Public
  20. License as published by the Free Software Foundation; either
  21. version 2.1 of the License, or (at your option) any later version.
  22. The GNU C Library is distributed in the hope that it will be useful,
  23. but WITHOUT ANY WARRANTY; without even the implied warranty of
  24. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  25. Lesser General Public License for more details.
  26. You should have received a copy of the GNU Lesser General Public
  27. License along with the GNU C Library; if not, see
  28. <https://www.gnu.org/licenses/>. */
  29. /*
  30. * ISO C99 Standard: 7.5 Errors <errno.h>
  31. */
  32. #ifndef _ERRNO_H
  33. #define _ERRNO_H 1
  34. #include <features.h>
  35. /* The system-specific definitions of the E* constants, as macros. */
  36. #include <bits/errno.h>
  37. /* When included from assembly language, this header only provides the
  38. E* constants. */
  39. #ifndef __ASSEMBLER__
  40. __BEGIN_DECLS
  41. /* The error code set by various library functions. */
  42. extern int *__errno_location (void) __THROW __attribute_const__;
  43. # define errno (*__errno_location ())
  44. # ifdef __USE_GNU
  45. /* The full and simple forms of the name with which the program was
  46. invoked. These variables are set up automatically at startup based on
  47. the value of argv[0]. */
  48. extern char *program_invocation_name;
  49. extern char *program_invocation_short_name;
  50. #include <bits/types/error_t.h>
  51. # endif /* __USE_GNU */
  52. __END_DECLS
  53. #endif /* !__ASSEMBLER__ */
  54. #endif /* errno.h */