| /* Common extra functions. |
| Copyright (C) 2016-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* This header file should only contain definitions compatible with |
| C90. (Using __attribute__ is fine because <features.h> provides a |
| fallback.) */ |
| |
| #ifndef SUPPORT_H |
| #define SUPPORT_H |
| |
| #include <stddef.h> |
| #include <sys/cdefs.h> |
| |
| __BEGIN_DECLS |
| |
| /* Write a message to standard output. Can be used in signal |
| handlers. */ |
| void write_message (const char *message) __attribute__ ((nonnull (1))); |
| |
| /* Avoid all the buffer overflow messages on stderr. */ |
| void ignore_stderr (void); |
| |
| /* Set fortification error handler. Used when tests want to verify that bad |
| code is caught by the library. */ |
| void set_fortify_handler (void (*handler) (int sig)); |
| |
| /* Report an out-of-memory error for the allocation of SIZE bytes in |
| FUNCTION, terminating the process. */ |
| void oom_error (const char *function, size_t size) |
| __attribute__ ((nonnull (1))); |
| |
| /* Return a pointer to a memory region of SIZE bytes. The memory is |
| initialized to zero and will be shared with subprocesses (across |
| fork). The returned pointer must be freed using |
| support_shared_free; it is not compatible with the malloc |
| functions. */ |
| void *support_shared_allocate (size_t size); |
| |
| /* Deallocate a pointer returned by support_shared_allocate. */ |
| void support_shared_free (void *); |
| |
| /* Write CONTENTS to the file PATH. Create or truncate the file as |
| needed. The file mode is 0666 masked by the umask. Terminate the |
| process on error. */ |
| void support_write_file_string (const char *path, const char *contents); |
| |
| /* Error-checking wrapper functions which terminate the process on |
| error. */ |
| |
| void *xmalloc (size_t) __attribute__ ((malloc)); |
| void *xcalloc (size_t n, size_t s) __attribute__ ((malloc)); |
| void *xrealloc (void *p, size_t n); |
| char *xasprintf (const char *format, ...) |
| __attribute__ ((format (printf, 1, 2), malloc)); |
| char *xstrdup (const char *); |
| char *xstrndup (const char *, size_t); |
| |
| __END_DECLS |
| |
| #endif /* SUPPORT_H */ |