errno.h (1679B) - Raw
1 /* Copyright (C) 1991-2025 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 /* 19 * ISO C99 Standard: 7.5 Errors <errno.h> 20 */ 21 22 #ifndef _ERRNO_H 23 #define _ERRNO_H 1 24 25 #include <features.h> 26 27 /* The system-specific definitions of the E* constants, as macros. */ 28 #include <bits/errno.h> 29 30 /* When included from assembly language, this header only provides the 31 E* constants. */ 32 #ifndef __ASSEMBLER__ 33 34 __BEGIN_DECLS 35 36 /* The error code set by various library functions. */ 37 extern int *__errno_location (void) __THROW __attribute_const__; 38 # define errno (*__errno_location ()) 39 40 # ifdef __USE_GNU 41 42 /* The full and simple forms of the name with which the program was 43 invoked. These variables are set up automatically at startup based on 44 the value of argv[0]. */ 45 extern char *program_invocation_name; 46 extern char *program_invocation_short_name; 47 48 #include <bits/types/error_t.h> 49 50 # endif /* __USE_GNU */ 51 52 __END_DECLS 53 54 #endif /* !__ASSEMBLER__ */ 55 #endif /* errno.h */