git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| c6251f03 RM |
1 | /* Copyright (C) 1994, 1997, 1999-2003, 2004, 2006 |
| 2 | Free Software Foundation, Inc. | |
| b5cc329c UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 19 | ||
| 20 | #include <stdarg.h> | |
| 21 | #include <stdio.h> | |
| 22 | #include "../libio/libioP.h" | |
| 23 | #include "../libio/strfile.h" | |
| 24 | ||
| 25 | ||
| 26 | static int _IO_str_chk_overflow (_IO_FILE *fp, int c) __THROW; | |
| 27 | ||
| 28 | static int | |
| 29 | _IO_str_chk_overflow (fp, c) | |
| 30 | _IO_FILE *fp; | |
| 31 | int c; | |
| 32 | { | |
| 33 | /* When we come to here this means the user supplied buffer is | |
| 34 | filled. */ | |
| 35 | __chk_fail (); | |
| 36 | } | |
| 37 | ||
| 38 | ||
| 39 | static const struct _IO_jump_t _IO_str_chk_jumps = | |
| 40 | { | |
| 41 | JUMP_INIT_DUMMY, | |
| 42 | JUMP_INIT(finish, _IO_str_finish), | |
| 43 | JUMP_INIT(overflow, _IO_str_chk_overflow), | |
| 44 | JUMP_INIT(underflow, INTUSE(_IO_str_underflow)), | |
| 45 | JUMP_INIT(uflow, INTUSE(_IO_default_uflow)), | |
| 46 | JUMP_INIT(pbackfail, INTUSE(_IO_str_pbackfail)), | |
| 47 | JUMP_INIT(xsputn, INTUSE(_IO_default_xsputn)), | |
| 48 | JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)), | |
| 49 | JUMP_INIT(seekoff, INTUSE(_IO_str_seekoff)), | |
| 50 | JUMP_INIT(seekpos, _IO_default_seekpos), | |
| 51 | JUMP_INIT(setbuf, _IO_default_setbuf), | |
| 52 | JUMP_INIT(sync, _IO_default_sync), | |
| 53 | JUMP_INIT(doallocate, INTUSE(_IO_default_doallocate)), | |
| 54 | JUMP_INIT(read, _IO_default_read), | |
| 55 | JUMP_INIT(write, _IO_default_write), | |
| 56 | JUMP_INIT(seek, _IO_default_seek), | |
| 57 | JUMP_INIT(close, _IO_default_close), | |
| 58 | JUMP_INIT(stat, _IO_default_stat), | |
| 59 | JUMP_INIT(showmanyc, _IO_default_showmanyc), | |
| 60 | JUMP_INIT(imbue, _IO_default_imbue) | |
| 61 | }; | |
| 62 | ||
| 63 | ||
| 64 | int | |
| c6251f03 RM |
65 | ___vsprintf_chk (char *s, int flags, size_t slen, const char *format, |
| 66 | va_list args) | |
| b5cc329c UD |
67 | { |
| 68 | _IO_strfile f; | |
| 69 | int ret; | |
| 70 | #ifdef _IO_MTSAFE_IO | |
| 71 | f._sbf._f._lock = NULL; | |
| 72 | #endif | |
| 73 | ||
| 74 | if (slen == 0) | |
| 75 | __chk_fail (); | |
| 76 | ||
| 77 | _IO_no_init (&f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL); | |
| 78 | _IO_JUMPS ((struct _IO_FILE_plus *) &f._sbf) = &_IO_str_chk_jumps; | |
| 79 | s[0] = '\0'; | |
| 80 | _IO_str_init_static_internal (&f, s, slen - 1, s); | |
| 81 | ||
| 82 | /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n | |
| 83 | can only come from read-only format strings. */ | |
| 84 | if (flags > 0) | |
| 1b1d3679 | 85 | f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY; |
| b5cc329c UD |
86 | |
| 87 | ret = INTUSE(_IO_vfprintf) ((_IO_FILE *) &f._sbf, format, args); | |
| 88 | ||
| 89 | *f._sbf._f._IO_write_ptr = '\0'; | |
| 90 | return ret; | |
| 91 | } | |
| c6251f03 RM |
92 | ldbl_hidden_def (___vsprintf_chk, __vsprintf_chk) |
| 93 | ldbl_strong_alias (___vsprintf_chk, __vsprintf_chk) |