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a334319f | 1 | /* Copyright (C) 1994, 1997, 1999-2003, 2004 Free Software Foundation, Inc. |
b5cc329c UD |
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, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
18 | ||
19 | #include <stdarg.h> | |
20 | #include <stdio.h> | |
21 | #include "../libio/libioP.h" | |
22 | #include "../libio/strfile.h" | |
23 | ||
24 | ||
25 | static int _IO_str_chk_overflow (_IO_FILE *fp, int c) __THROW; | |
26 | ||
27 | static int | |
28 | _IO_str_chk_overflow (fp, c) | |
29 | _IO_FILE *fp; | |
30 | int c; | |
31 | { | |
32 | /* When we come to here this means the user supplied buffer is | |
33 | filled. */ | |
34 | __chk_fail (); | |
35 | } | |
36 | ||
37 | ||
38 | static const struct _IO_jump_t _IO_str_chk_jumps = | |
39 | { | |
40 | JUMP_INIT_DUMMY, | |
41 | JUMP_INIT(finish, _IO_str_finish), | |
42 | JUMP_INIT(overflow, _IO_str_chk_overflow), | |
43 | JUMP_INIT(underflow, INTUSE(_IO_str_underflow)), | |
44 | JUMP_INIT(uflow, INTUSE(_IO_default_uflow)), | |
45 | JUMP_INIT(pbackfail, INTUSE(_IO_str_pbackfail)), | |
46 | JUMP_INIT(xsputn, INTUSE(_IO_default_xsputn)), | |
47 | JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)), | |
48 | JUMP_INIT(seekoff, INTUSE(_IO_str_seekoff)), | |
49 | JUMP_INIT(seekpos, _IO_default_seekpos), | |
50 | JUMP_INIT(setbuf, _IO_default_setbuf), | |
51 | JUMP_INIT(sync, _IO_default_sync), | |
52 | JUMP_INIT(doallocate, INTUSE(_IO_default_doallocate)), | |
53 | JUMP_INIT(read, _IO_default_read), | |
54 | JUMP_INIT(write, _IO_default_write), | |
55 | JUMP_INIT(seek, _IO_default_seek), | |
56 | JUMP_INIT(close, _IO_default_close), | |
57 | JUMP_INIT(stat, _IO_default_stat), | |
58 | JUMP_INIT(showmanyc, _IO_default_showmanyc), | |
59 | JUMP_INIT(imbue, _IO_default_imbue) | |
60 | }; | |
61 | ||
62 | ||
63 | int | |
a334319f UD |
64 | __vsprintf_chk (char *s, int flags, size_t slen, const char *format, |
65 | va_list args) | |
b5cc329c UD |
66 | { |
67 | _IO_strfile f; | |
68 | int ret; | |
69 | #ifdef _IO_MTSAFE_IO | |
70 | f._sbf._f._lock = NULL; | |
71 | #endif | |
72 | ||
73 | if (slen == 0) | |
74 | __chk_fail (); | |
75 | ||
76 | _IO_no_init (&f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL); | |
77 | _IO_JUMPS ((struct _IO_FILE_plus *) &f._sbf) = &_IO_str_chk_jumps; | |
78 | s[0] = '\0'; | |
79 | _IO_str_init_static_internal (&f, s, slen - 1, s); | |
80 | ||
81 | /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n | |
82 | can only come from read-only format strings. */ | |
83 | if (flags > 0) | |
1b1d3679 | 84 | f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY; |
b5cc329c UD |
85 | |
86 | ret = INTUSE(_IO_vfprintf) ((_IO_FILE *) &f._sbf, format, args); | |
87 | ||
88 | *f._sbf._f._IO_write_ptr = '\0'; | |
89 | return ret; | |
90 | } | |
a334319f | 91 | libc_hidden_def (__vsprintf_chk) |