diff options
Diffstat (limited to 'REORG.TODO/debug/obprintf_chk.c')
| -rw-r--r-- | REORG.TODO/debug/obprintf_chk.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/REORG.TODO/debug/obprintf_chk.c b/REORG.TODO/debug/obprintf_chk.c new file mode 100644 index 0000000000..12f021cb9d --- /dev/null +++ b/REORG.TODO/debug/obprintf_chk.c @@ -0,0 +1,115 @@ +/* Print output of stream to given obstack. + Copyright (C) 1996-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + + 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/>. */ + + +#include <stdlib.h> +#include <libioP.h> +#include "../libio/strfile.h" +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <obstack.h> +#include <stdarg.h> +#include <stdio_ext.h> + + +struct _IO_obstack_file +{ + struct _IO_FILE_plus file; + struct obstack *obstack; +}; + +extern const struct _IO_jump_t _IO_obstack_jumps libio_vtable attribute_hidden; + +int +__obstack_vprintf_chk (struct obstack *obstack, int flags, const char *format, + va_list args) +{ + struct obstack_FILE + { + struct _IO_obstack_file ofile; + } new_f; + int result; + int size; + int room; + +#ifdef _IO_MTSAFE_IO + new_f.ofile.file.file._lock = NULL; +#endif + + _IO_no_init (&new_f.ofile.file.file, _IO_USER_LOCK, -1, NULL, NULL); + _IO_JUMPS (&new_f.ofile.file) = &_IO_obstack_jumps; + room = obstack_room (obstack); + size = obstack_object_size (obstack) + room; + if (size == 0) + { + /* We have to handle the allocation a bit different since the + `_IO_str_init_static' function would handle a size of zero + different from what we expect. */ + + /* Get more memory. */ + obstack_make_room (obstack, 64); + + /* Recompute how much room we have. */ + room = obstack_room (obstack); + size = room; + + assert (size != 0); + } + + _IO_str_init_static_internal ((struct _IO_strfile_ *) &new_f.ofile, + obstack_base (obstack), + size, obstack_next_free (obstack)); + /* Now allocate the rest of the current chunk. */ + assert (size == (new_f.ofile.file.file._IO_write_end + - new_f.ofile.file.file._IO_write_base)); + assert (new_f.ofile.file.file._IO_write_ptr + == (new_f.ofile.file.file._IO_write_base + + obstack_object_size (obstack))); + obstack_blank_fast (obstack, room); + + new_f.ofile.obstack = obstack; + + /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n + can only come from read-only format strings. */ + if (flags > 0) + new_f.ofile.file.file._flags2 |= _IO_FLAGS2_FORTIFY; + + result = _IO_vfprintf (&new_f.ofile.file.file, format, args); + + /* Shrink the buffer to the space we really currently need. */ + obstack_blank_fast (obstack, (new_f.ofile.file.file._IO_write_ptr + - new_f.ofile.file.file._IO_write_end)); + + return result; +} +libc_hidden_def (__obstack_vprintf_chk) + + +int +__obstack_printf_chk (struct obstack *obstack, int flags, const char *format, + ...) +{ + int result; + va_list ap; + va_start (ap, format); + result = __obstack_vprintf_chk (obstack, flags, format, ap); + va_end (ap); + return result; +} |