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9964a14579
This patch mechanically removes all remaining uses, and the definitions, of the following libio name aliases: name replaced with ---- ------------- _IO_FILE FILE _IO_fpos_t __fpos_t _IO_fpos64_t __fpos64_t _IO_size_t size_t _IO_ssize_t ssize_t or __ssize_t _IO_off_t off_t _IO_off64_t off64_t _IO_pid_t pid_t _IO_uid_t uid_t _IO_wint_t wint_t _IO_va_list va_list or __gnuc_va_list _IO_BUFSIZ BUFSIZ _IO_cookie_io_functions_t cookie_io_functions_t __io_read_fn cookie_read_function_t __io_write_fn cookie_write_function_t __io_seek_fn cookie_seek_function_t __io_close_fn cookie_close_function_t I used __fpos_t and __fpos64_t instead of fpos_t and fpos64_t because the definitions of fpos_t and fpos64_t depend on the largefile mode. I used __ssize_t and __gnuc_va_list in a handful of headers where namespace cleanliness might be relevant even though they're internal-use-only. In all other cases, I used the public-namespace name. There are a tiny handful of places where I left a use of 'struct _IO_FILE' alone, because it was being used together with 'struct _IO_FILE_plus' or 'struct _IO_FILE_complete' in the same arithmetic expression. Because this patch was almost entirely done with search and replace, I may have introduced indentation botches. I did proofread the diff, but I may have missed something. The ChangeLog below calls out all of the places where this was not a pure search-and-replace change. Installed stripped libraries and executables are unchanged by this patch, except that some assertions in vfscanf.c change line numbers. * libio/libio.h (_IO_FILE): Delete; all uses changed to FILE. (_IO_fpos_t): Delete; all uses changed to __fpos_t. (_IO_fpos64_t): Delete; all uses changed to __fpos64_t. (_IO_size_t): Delete; all uses changed to size_t. (_IO_ssize_t): Delete; all uses changed to ssize_t or __ssize_t. (_IO_off_t): Delete; all uses changed to off_t. (_IO_off64_t): Delete; all uses changed to off64_t. (_IO_pid_t): Delete; all uses changed to pid_t. (_IO_uid_t): Delete; all uses changed to uid_t. (_IO_wint_t): Delete; all uses changed to wint_t. (_IO_va_list): Delete; all uses changed to va_list or __gnuc_va_list. (_IO_BUFSIZ): Delete; all uses changed to BUFSIZ. (_IO_cookie_io_functions_t): Delete; all uses changed to cookie_io_functions_t. (__io_read_fn): Delete; all uses changed to cookie_read_function_t. (__io_write_fn): Delete; all uses changed to cookie_write_function_t. (__io_seek_fn): Delete; all uses changed to cookie_seek_function_t. (__io_close_fn): Delete: all uses changed to cookie_close_function_t. * libio/iofopncook.c: Remove unnecessary forward declarations. * libio/iolibio.h: Correct outdated commentary. * malloc/malloc.c (__malloc_stats): Remove unnecessary casts. * stdio-common/fxprintf.c (__fxprintf_nocancel): Remove unnecessary casts. * stdio-common/getline.c: Use _IO_getdelim directly. Don't redefine ssize_t. * stdio-common/printf_fp.c, stdio_common/printf_fphex.c * stdio-common/printf_size.c: Don't redefine size_t or FILE. Remove outdated comments. * stdio-common/vfscanf.c: Don't redefine va_list.
96 lines
3.4 KiB
C
96 lines
3.4 KiB
C
/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>.
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As a special exception, if you link the code in this file with
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files compiled with a GNU compiler to produce an executable,
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that does not cause the resulting executable to be covered by
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the GNU Lesser General Public License. This exception does not
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however invalidate any other reasons why the executable file
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might be covered by the GNU Lesser General Public License.
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This exception applies to code released by its copyright holders
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in files containing the exception. */
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#include <malloc.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdio_ext.h>
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#include "../libio/libioP.h"
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#include "../libio/strfile.h"
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int
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__vasprintf_chk (char **result_ptr, int flags, const char *format,
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va_list args)
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{
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/* Initial size of the buffer to be used. Will be doubled each time an
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overflow occurs. */
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const size_t init_string_size = 100;
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char *string;
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_IO_strfile sf;
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int ret;
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size_t needed;
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size_t allocated;
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/* No need to clear the memory here (unlike for open_memstream) since
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we know we will never seek on the stream. */
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string = (char *) malloc (init_string_size);
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if (string == NULL)
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return -1;
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#ifdef _IO_MTSAFE_IO
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sf._sbf._f._lock = NULL;
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#endif
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_IO_no_init (&sf._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
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_IO_JUMPS (&sf._sbf) = &_IO_str_jumps;
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_IO_str_init_static_internal (&sf, string, init_string_size, string);
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sf._sbf._f._flags &= ~_IO_USER_BUF;
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sf._s._allocate_buffer = (_IO_alloc_type) malloc;
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sf._s._free_buffer = (_IO_free_type) free;
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/* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
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can only come from read-only format strings. */
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if (flags > 0)
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sf._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
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ret = _IO_vfprintf (&sf._sbf._f, format, args);
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if (ret < 0)
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{
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free (sf._sbf._f._IO_buf_base);
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return ret;
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}
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/* Only use realloc if the size we need is of the same (binary)
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order of magnitude then the memory we allocated. */
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needed = sf._sbf._f._IO_write_ptr - sf._sbf._f._IO_write_base + 1;
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allocated = sf._sbf._f._IO_write_end - sf._sbf._f._IO_write_base;
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if ((allocated >> 1) <= needed)
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*result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base, needed);
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else
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{
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*result_ptr = (char *) malloc (needed);
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if (*result_ptr != NULL)
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{
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memcpy (*result_ptr, sf._sbf._f._IO_buf_base, needed - 1);
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free (sf._sbf._f._IO_buf_base);
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}
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else
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/* We have no choice, use the buffer we already have. */
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*result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base, needed);
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}
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if (*result_ptr == NULL)
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*result_ptr = sf._sbf._f._IO_buf_base;
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(*result_ptr)[needed - 1] = '\0';
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return ret;
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}
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libc_hidden_def (__vasprintf_chk)
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