@@ -45,7 +45,7 @@ routines = backtrace backtracesyms backtracesymsfd noophooks \
gethostname_chk getdomainname_chk wcrtomb_chk mbsnrtowcs_chk \
wcsnrtombs_chk mbsrtowcs_chk wcsrtombs_chk mbstowcs_chk \
wcstombs_chk asprintf_chk vasprintf_chk dprintf_chk \
- vdprintf_chk obprintf_chk \
+ vdprintf_chk obprintf_chk vobprintf_chk \
longjmp_chk ____longjmp_chk \
fdelt_chk poll_chk ppoll_chk \
explicit_bzero_chk \
@@ -15,22 +15,24 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <libioP.h>
#include <stdarg.h>
-#include <stdio.h>
+#include <libio/libioP.h>
/* Write formatted output from FORMAT to a string which is
allocated with malloc and stored in *STRING_PTR. */
int
-__asprintf_chk (char **result_ptr, int flags, const char *format, ...)
+__asprintf_chk (char **result_ptr, int flag, const char *format, ...)
{
- va_list arg;
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
+ va_list ap;
+ int ret;
- va_start (arg, format);
- done = __vasprintf_chk (result_ptr, flags, format, arg);
- va_end (arg);
+ va_start (ap, format);
+ ret = __vasprintf_internal (result_ptr, format, ap, mode);
+ va_end (ap);
- return done;
+ return ret;
}
@@ -15,21 +15,23 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <libioP.h>
#include <stdarg.h>
-#include <stdio.h>
+#include <libio/libioP.h>
/* Write formatted output to D, according to the format string FORMAT. */
int
-__dprintf_chk (int d, int flags, const char *format, ...)
+__dprintf_chk (int d, int flag, const char *format, ...)
{
- va_list arg;
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
+ va_list ap;
+ int ret;
- va_start (arg, format);
- done = __vdprintf_chk (d, flags, format, arg);
- va_end (arg);
+ va_start (ap, format);
+ ret = __vdprintf_internal (d, format, ap, mode);
+ va_end (ap);
- return done;
+ return ret;
}
@@ -16,29 +16,23 @@
<http://www.gnu.org/licenses/>. */
#include <stdarg.h>
-#include <stdio.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to FP from the format string FORMAT. */
int
___fprintf_chk (FILE *fp, int flag, const char *format, ...)
{
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
va_list ap;
- int done;
-
- _IO_acquire_lock_clear_flags2 (fp);
- if (flag > 0)
- fp->_flags2 |= _IO_FLAGS2_FORTIFY;
+ int ret;
va_start (ap, format);
- done = vfprintf (fp, format, ap);
+ ret = __vfprintf_internal (fp, format, ap, mode);
va_end (ap);
- if (flag > 0)
- fp->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (fp);
-
- return done;
+ return ret;
}
ldbl_strong_alias (___fprintf_chk, __fprintf_chk)
@@ -16,28 +16,22 @@
<http://www.gnu.org/licenses/>. */
#include <stdarg.h>
-#include <wchar.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to FP from the format string FORMAT. */
int
__fwprintf_chk (FILE *fp, int flag, const wchar_t *format, ...)
{
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
va_list ap;
- int done;
-
- _IO_acquire_lock_clear_flags2 (fp);
- if (flag > 0)
- fp->_flags2 |= _IO_FLAGS2_FORTIFY;
+ int ret;
va_start (ap, format);
- done = __vfwprintf_internal (fp, format, ap, 0);
+ ret = __vfwprintf_internal (fp, format, ap, mode);
va_end (ap);
- if (flag > 0)
- fp->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (fp);
-
- return done;
+ return ret;
}
@@ -17,99 +17,23 @@
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 <libio/libioP.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 = __vfprintf_internal (&new_f.ofile.file.file, format, args, 0);
-
- /* 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,
+__obstack_printf_chk (struct obstack *obstack, int flag, const char *format,
...)
{
- int result;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
va_list ap;
+ int ret;
+
va_start (ap, format);
- result = __obstack_vprintf_chk (obstack, flags, format, ap);
+ ret = __obstack_vprintf_internal (obstack, format, ap, mode);
va_end (ap);
- return result;
+
+ return ret;
}
@@ -16,29 +16,23 @@
<http://www.gnu.org/licenses/>. */
#include <stdarg.h>
-#include <stdio.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to stdout from the format string FORMAT. */
int
___printf_chk (int flag, const char *format, ...)
{
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
va_list ap;
- int done;
-
- _IO_acquire_lock_clear_flags2 (stdout);
- if (flag > 0)
- stdout->_flags2 |= _IO_FLAGS2_FORTIFY;
+ int ret;
va_start (ap, format);
- done = vfprintf (stdout, format, ap);
+ ret = __vfprintf_internal (stdout, format, ap, mode);
va_end (ap);
- if (flag > 0)
- stdout->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (stdout);
-
- return done;
+ return ret;
}
ldbl_strong_alias (___printf_chk, __printf_chk)
@@ -15,25 +15,29 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <libioP.h>
#include <stdarg.h>
-#include <stdio.h>
+#include <libio/libioP.h>
/* Write formatted output into S, according to the format
string FORMAT, writing no more than MAXLEN characters. */
-/* VARARGS5 */
int
-___snprintf_chk (char *s, size_t maxlen, int flags, size_t slen,
+___snprintf_chk (char *s, size_t maxlen, int flag, size_t slen,
const char *format, ...)
{
- va_list arg;
- int done;
+ if (__glibc_unlikely (slen < maxlen))
+ __chk_fail ();
- va_start (arg, format);
- done = __vsnprintf_chk (s, maxlen, flags, slen, format, arg);
- va_end (arg);
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
+ va_list ap;
+ int ret;
- return done;
+ va_start (ap, format);
+ ret = __vsnprintf_internal (s, maxlen, format, ap, mode);
+ va_end (ap);
+
+ return ret;
}
ldbl_strong_alias (___snprintf_chk, __snprintf_chk)
@@ -15,22 +15,27 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <libioP.h>
#include <stdarg.h>
-#include <stdio.h>
+#include <libio/libioP.h>
+
/* Write formatted output into S, according to the format string FORMAT. */
-/* VARARGS4 */
int
-___sprintf_chk (char *s, int flags, size_t slen, const char *format, ...)
+___sprintf_chk (char *s, int flag, size_t slen, const char *format, ...)
{
- va_list arg;
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
+ va_list ap;
+ int ret;
+
+ if (slen == 0)
+ __chk_fail ();
- va_start (arg, format);
- done = __vsprintf_chk (s, flags, slen, format, arg);
- va_end (arg);
+ va_start (ap, format);
+ ret = __vsprintf_internal (s, slen, format, ap, mode);
+ va_end (ap);
- return done;
+ return ret;
}
ldbl_strong_alias (___sprintf_chk, __sprintf_chk)
@@ -16,20 +16,27 @@
<http://www.gnu.org/licenses/>. */
#include <stdarg.h>
-#include <wchar.h>
+#include <libio/libioP.h>
-/* Write formatted output into S, according to the format string FORMAT. */
-/* VARARGS5 */
+
+/* Write formatted output into S, according to the format string FORMAT,
+ writing no more than MAXLEN characters. */
int
-__swprintf_chk (wchar_t *s, size_t n, int flag, size_t s_len,
+__swprintf_chk (wchar_t *s, size_t maxlen, int flag, size_t slen,
const wchar_t *format, ...)
{
- va_list arg;
- int done;
+ if (__glibc_unlikely (slen < maxlen))
+ __chk_fail ();
+
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
+ va_list ap;
+ int ret;
- va_start (arg, format);
- done = __vswprintf_chk (s, n, flag, s_len, format, arg);
- va_end (arg);
+ va_start (ap, format);
+ ret = __vswprintf_internal (s, maxlen, format, ap, mode);
+ va_end (ap);
- return done;
+ return ret;
}
@@ -24,72 +24,14 @@
This exception applies to code released by its copyright holders
in files containing the exception. */
-#include <malloc.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdio_ext.h>
-#include "../libio/libioP.h"
-#include "../libio/strfile.h"
+#include <libio/libioP.h>
int
-__vasprintf_chk (char **result_ptr, int flags, const char *format,
- va_list args)
+__vasprintf_chk (char **result_ptr, int flag, const char *format, va_list ap)
{
- /* Initial size of the buffer to be used. Will be doubled each time an
- overflow occurs. */
- const size_t init_string_size = 100;
- char *string;
- _IO_strfile sf;
- int ret;
- size_t needed;
- size_t allocated;
- /* No need to clear the memory here (unlike for open_memstream) since
- we know we will never seek on the stream. */
- string = (char *) malloc (init_string_size);
- if (string == NULL)
- return -1;
-#ifdef _IO_MTSAFE_IO
- sf._sbf._f._lock = NULL;
-#endif
- _IO_no_init (&sf._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
- _IO_JUMPS (&sf._sbf) = &_IO_str_jumps;
- _IO_str_init_static_internal (&sf, string, init_string_size, string);
- sf._sbf._f._flags &= ~_IO_USER_BUF;
- sf._s._allocate_buffer = (_IO_alloc_type) malloc;
- sf._s._free_buffer = (_IO_free_type) free;
-
- /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
can only come from read-only format strings. */
- if (flags > 0)
- sf._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- ret = __vfprintf_internal (&sf._sbf._f, format, args, 0);
- if (ret < 0)
- {
- free (sf._sbf._f._IO_buf_base);
- return ret;
- }
- /* Only use realloc if the size we need is of the same (binary)
- order of magnitude then the memory we allocated. */
- needed = sf._sbf._f._IO_write_ptr - sf._sbf._f._IO_write_base + 1;
- allocated = sf._sbf._f._IO_write_end - sf._sbf._f._IO_write_base;
- if ((allocated >> 1) <= needed)
- *result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base, needed);
- else
- {
- *result_ptr = (char *) malloc (needed);
- if (*result_ptr != NULL)
- {
- memcpy (*result_ptr, sf._sbf._f._IO_buf_base, needed - 1);
- free (sf._sbf._f._IO_buf_base);
- }
- else
- /* We have no choice, use the buffer we already have. */
- *result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base, needed);
- }
- if (*result_ptr == NULL)
- *result_ptr = sf._sbf._f._IO_buf_base;
- (*result_ptr)[needed - 1] = '\0';
- return ret;
+ return __vasprintf_internal (result_ptr, format, ap, mode);
}
-libc_hidden_def (__vasprintf_chk)
@@ -24,41 +24,14 @@
This exception applies to code released by its copyright holders
in files containing the exception. */
-#include <libioP.h>
-#include <stdio_ext.h>
+#include <libio/libioP.h>
int
-__vdprintf_chk (int d, int flags, const char *format, va_list arg)
+__vdprintf_chk (int d, int flag, const char *format, va_list ap)
{
- struct _IO_FILE_plus tmpfil;
- struct _IO_wide_data wd;
- int done;
-
-#ifdef _IO_MTSAFE_IO
- tmpfil.file._lock = NULL;
-#endif
- _IO_no_init (&tmpfil.file, _IO_USER_LOCK, 0, &wd, &_IO_wfile_jumps);
- _IO_JUMPS (&tmpfil) = &_IO_file_jumps;
- _IO_new_file_init_internal (&tmpfil);
- if (_IO_file_attach (&tmpfil.file, d) == NULL)
- {
- _IO_un_link (&tmpfil);
- return EOF;
- }
- tmpfil.file._flags |= _IO_DELETE_DONT_CLOSE;
-
- _IO_mask_flags (&tmpfil.file, _IO_NO_READS,
- _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
-
- /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
can only come from read-only format strings. */
- if (flags > 0)
- tmpfil.file._flags2 |= _IO_FLAGS2_FORTIFY;
-
- done = __vfprintf_internal (&tmpfil.file, format, arg, 0);
-
- _IO_FINISH (&tmpfil.file);
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- return done;
+ return __vdprintf_internal (d, format, ap, mode);
}
-libc_hidden_def (__vdprintf_chk)
@@ -15,28 +15,17 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <stdio.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to FP from the format string FORMAT. */
int
___vfprintf_chk (FILE *fp, int flag, const char *format, va_list ap)
{
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- _IO_acquire_lock_clear_flags2 (fp);
- if (flag > 0)
- fp->_flags2 |= _IO_FLAGS2_FORTIFY;
-
- done = vfprintf (fp, format, ap);
-
- if (flag > 0)
- fp->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (fp);
-
- return done;
+ return __vfprintf_internal (fp, format, ap, mode);
}
-ldbl_hidden_def (___vfprintf_chk, __vfprintf_chk)
ldbl_strong_alias (___vfprintf_chk, __vfprintf_chk)
@@ -15,27 +15,16 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <wchar.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to FP from the format string FORMAT. */
int
__vfwprintf_chk (FILE *fp, int flag, const wchar_t *format, va_list ap)
{
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- _IO_acquire_lock_clear_flags2 (fp);
- if (flag > 0)
- fp->_flags2 |= _IO_FLAGS2_FORTIFY;
-
- done = __vfwprintf_internal (fp, format, ap, 0);
-
- if (flag > 0)
- fp->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (fp);
-
- return done;
+ return __vfwprintf_internal (fp, format, ap, mode);
}
-libc_hidden_def (__vfwprintf_chk)
new file mode 100644
@@ -0,0 +1,32 @@
+/* Print output of stream to given obstack.
+ Copyright (C) 1996-2018 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 <libio/libioP.h>
+
+
+int
+__obstack_vprintf_chk (struct obstack *obstack, int flag, const char *format,
+ va_list ap)
+{
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
+
+ return __obstack_vprintf_internal (obstack, format, ap, mode);
+}
@@ -15,27 +15,17 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <stdio.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to stdout from the format string FORMAT. */
int
___vprintf_chk (int flag, const char *format, va_list ap)
{
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- _IO_acquire_lock_clear_flags2 (stdout);
- if (flag > 0)
- stdout->_flags2 |= _IO_FLAGS2_FORTIFY;
-
- done = vfprintf (stdout, format, ap);
-
- if (flag > 0)
- stdout->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (stdout);
-
- return done;
+ return __vfprintf_internal (stdout, format, ap, mode);
}
ldbl_strong_alias (___vprintf_chk, __vprintf_chk)
@@ -15,56 +15,22 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <stdio.h>
-#include "../libio/libioP.h"
-#include "../libio/strfile.h"
+#include <libio/libioP.h>
-extern const struct _IO_jump_t _IO_strn_jumps libio_vtable attribute_hidden;
/* Write formatted output into S, according to the format
string FORMAT, writing no more than MAXLEN characters. */
-/* VARARGS5 */
int
-___vsnprintf_chk (char *s, size_t maxlen, int flags, size_t slen,
- const char *format, va_list args)
+___vsnprintf_chk (char *s, size_t maxlen, int flag, size_t slen,
+ const char *format, va_list ap)
{
- /* XXX Maybe for less strict version do not fail immediately.
- Though, maxlen is supposed to be the size of buffer pointed
- to by s, so a conforming program can't pass such maxlen
- to *snprintf. */
if (__glibc_unlikely (slen < maxlen))
__chk_fail ();
- _IO_strnfile sf;
- int ret;
-#ifdef _IO_MTSAFE_IO
- sf.f._sbf._f._lock = NULL;
-#endif
-
- /* We need to handle the special case where MAXLEN is 0. Use the
- overflow buffer right from the start. */
- if (maxlen == 0)
- {
- s = sf.overflow_buf;
- maxlen = sizeof (sf.overflow_buf);
- }
-
- _IO_no_init (&sf.f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
- _IO_JUMPS (&sf.f._sbf) = &_IO_strn_jumps;
- s[0] = '\0';
-
- /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
can only come from read-only format strings. */
- if (flags > 0)
- sf.f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
-
- _IO_str_init_static_internal (&sf.f, s, maxlen - 1, s);
- ret = __vfprintf_internal (&sf.f._sbf._f, format, args, 0);
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- if (sf.f._sbf._f._IO_buf_base != sf.overflow_buf)
- *sf.f._sbf._f._IO_write_ptr = '\0';
- return ret;
+ return __vsnprintf_internal (s, maxlen, format, ap, mode);
}
-ldbl_hidden_def (___vsnprintf_chk, __vsnprintf_chk)
ldbl_strong_alias (___vsnprintf_chk, __vsnprintf_chk)
@@ -15,75 +15,20 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <stdio.h>
-#include "../libio/libioP.h"
-#include "../libio/strfile.h"
-
-
-static int _IO_str_chk_overflow (FILE *fp, int c) __THROW;
-
-static int
-_IO_str_chk_overflow (FILE *fp, int c)
-{
- /* When we come to here this means the user supplied buffer is
- filled. */
- __chk_fail ();
-}
-
-
-static const struct _IO_jump_t _IO_str_chk_jumps libio_vtable =
-{
- JUMP_INIT_DUMMY,
- JUMP_INIT(finish, _IO_str_finish),
- JUMP_INIT(overflow, _IO_str_chk_overflow),
- JUMP_INIT(underflow, _IO_str_underflow),
- JUMP_INIT(uflow, _IO_default_uflow),
- JUMP_INIT(pbackfail, _IO_str_pbackfail),
- JUMP_INIT(xsputn, _IO_default_xsputn),
- JUMP_INIT(xsgetn, _IO_default_xsgetn),
- JUMP_INIT(seekoff, _IO_str_seekoff),
- JUMP_INIT(seekpos, _IO_default_seekpos),
- JUMP_INIT(setbuf, _IO_default_setbuf),
- JUMP_INIT(sync, _IO_default_sync),
- JUMP_INIT(doallocate, _IO_default_doallocate),
- JUMP_INIT(read, _IO_default_read),
- JUMP_INIT(write, _IO_default_write),
- JUMP_INIT(seek, _IO_default_seek),
- JUMP_INIT(close, _IO_default_close),
- JUMP_INIT(stat, _IO_default_stat),
- JUMP_INIT(showmanyc, _IO_default_showmanyc),
- JUMP_INIT(imbue, _IO_default_imbue)
-};
-
+#include <libio/libioP.h>
int
-___vsprintf_chk (char *s, int flags, size_t slen, const char *format,
- va_list args)
+___vsprintf_chk (char *s, int flag, size_t slen, const char *format,
+ va_list ap)
{
- _IO_strfile f;
- int ret;
-#ifdef _IO_MTSAFE_IO
- f._sbf._f._lock = NULL;
-#endif
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
if (slen == 0)
__chk_fail ();
- _IO_no_init (&f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
- _IO_JUMPS (&f._sbf) = &_IO_str_chk_jumps;
- s[0] = '\0';
- _IO_str_init_static_internal (&f, s, slen - 1, s);
-
- /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
- can only come from read-only format strings. */
- if (flags > 0)
- f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
-
- ret = __vfprintf_internal (&f._sbf._f, format, args, 0);
-
- *f._sbf._f._IO_write_ptr = '\0';
- return ret;
+ return __vsprintf_internal (s, slen, format, ap, mode);
}
ldbl_hidden_def (___vsprintf_chk, __vsprintf_chk)
ldbl_strong_alias (___vsprintf_chk, __vsprintf_chk)
@@ -15,60 +15,21 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <wchar.h>
-#include "../libio/libioP.h"
-#include "../libio/strfile.h"
+#include <libio/libioP.h>
/* Write formatted output into S, according to the format
string FORMAT, writing no more than MAXLEN characters. */
-/* VARARGS5 */
int
-__vswprintf_chk (wchar_t *s, size_t maxlen, int flags, size_t slen,
- const wchar_t *format, va_list args)
+__vswprintf_chk (wchar_t *s, size_t maxlen, int flag, size_t slen,
+ const wchar_t *format, va_list ap)
{
- /* XXX Maybe for less strict version do not fail immediately.
- Though, maxlen is supposed to be the size of buffer pointed
- to by s, so a conforming program can't pass such maxlen
- to *snprintf. */
if (__glibc_unlikely (slen < maxlen))
__chk_fail ();
- _IO_wstrnfile sf;
- struct _IO_wide_data wd;
- int ret;
-#ifdef _IO_MTSAFE_IO
- sf.f._sbf._f._lock = NULL;
-#endif
-
- /* We need to handle the special case where MAXLEN is 0. Use the
- overflow buffer right from the start. */
- if (__glibc_unlikely (maxlen == 0))
- /* Since we have to write at least the terminating L'\0' a buffer
- length of zero always makes the function fail. */
- return -1;
-
- _IO_no_init (&sf.f._sbf._f, _IO_USER_LOCK, 0, &wd, &_IO_wstrn_jumps);
- _IO_fwide (&sf.f._sbf._f, 1);
- s[0] = L'\0';
-
- /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
can only come from read-only format strings. */
- if (flags > 0)
- sf.f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
-
- _IO_wstr_init_static (&sf.f._sbf._f, s, maxlen - 1, s);
- ret = __vfwprintf_internal ((FILE *) &sf.f._sbf, format, args, 0);
-
- if (sf.f._sbf._f._wide_data->_IO_buf_base == sf.overflow_buf)
- /* ISO C99 requires swprintf/vswprintf to return an error if the
- output does not fit int he provided buffer. */
- return -1;
-
- /* Terminate the string. */
- *sf.f._sbf._f._wide_data->_IO_write_ptr = '\0';
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- return ret;
+ return __vswprintf_internal (s, maxlen, format, ap, mode);
}
-libc_hidden_def (__vswprintf_chk)
@@ -15,27 +15,16 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <stdarg.h>
-#include <stdio.h>
-#include <wchar.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to stdout from the format string FORMAT. */
int
__vwprintf_chk (int flag, const wchar_t *format, va_list ap)
{
- int done;
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
- _IO_acquire_lock_clear_flags2 (stdout);
- if (flag > 0)
- stdout->_flags2 |= _IO_FLAGS2_FORTIFY;
-
- done = __vfwprintf_internal (stdout, format, ap, 0);
-
- if (flag > 0)
- stdout->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (stdout);
-
- return done;
+ return __vfwprintf_internal (stdout, format, ap, mode);
}
@@ -16,29 +16,22 @@
<http://www.gnu.org/licenses/>. */
#include <stdarg.h>
-#include <stdio.h>
-#include <wchar.h>
-#include "../libio/libioP.h"
+#include <libio/libioP.h>
/* Write formatted output to stdout from the format string FORMAT. */
int
__wprintf_chk (int flag, const wchar_t *format, ...)
{
+ /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0;
va_list ap;
- int done;
-
- _IO_acquire_lock_clear_flags2 (stdout);
- if (flag > 0)
- stdout->_flags2 |= _IO_FLAGS2_FORTIFY;
+ int ret;
va_start (ap, format);
- done = __vfwprintf_internal (stdout, format, ap, 0);
+ ret = __vfwprintf_internal (stdout, format, ap, mode);
va_end (ap);
- if (flag > 0)
- stdout->_flags2 &= ~_IO_FLAGS2_FORTIFY;
- _IO_release_lock (stdout);
-
- return done;
+ return ret;
}
@@ -203,11 +203,6 @@ libc_hidden_proto (__open_memstream)
libc_hidden_proto (__libc_fatal)
rtld_hidden_proto (__libc_fatal)
libc_hidden_proto (__vsprintf_chk)
-libc_hidden_proto (__vsnprintf_chk)
-libc_hidden_proto (__vfprintf_chk)
-libc_hidden_proto (__vasprintf_chk)
-libc_hidden_proto (__vdprintf_chk)
-libc_hidden_proto (__obstack_vprintf_chk)
extern FILE * __fmemopen (void *buf, size_t len, const char *mode);
libc_hidden_proto (__fmemopen)
@@ -226,8 +226,6 @@ extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
const wchar_t *__restrict __format,
__gnuc_va_list __arg)
/* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
-libc_hidden_proto (__vfwprintf_chk)
-libc_hidden_proto (__vswprintf_chk)
extern int __isoc99_fwscanf (__FILE *__restrict __stream,
const wchar_t *__restrict __format, ...);
@@ -27,8 +27,47 @@
#include "libioP.h"
#include "strfile.h"
+static int __THROW
+_IO_str_chk_overflow (FILE *fp, int c)
+{
+ /* If we get here, the user-supplied buffer would be overrun by
+ further output. */
+ __chk_fail ();
+}
+
+static const struct _IO_jump_t _IO_str_chk_jumps libio_vtable =
+{
+ JUMP_INIT_DUMMY,
+ JUMP_INIT(finish, _IO_str_finish),
+ JUMP_INIT(overflow, _IO_str_chk_overflow),
+ JUMP_INIT(underflow, _IO_str_underflow),
+ JUMP_INIT(uflow, _IO_default_uflow),
+ JUMP_INIT(pbackfail, _IO_str_pbackfail),
+ JUMP_INIT(xsputn, _IO_default_xsputn),
+ JUMP_INIT(xsgetn, _IO_default_xsgetn),
+ JUMP_INIT(seekoff, _IO_str_seekoff),
+ JUMP_INIT(seekpos, _IO_default_seekpos),
+ JUMP_INIT(setbuf, _IO_default_setbuf),
+ JUMP_INIT(sync, _IO_default_sync),
+ JUMP_INIT(doallocate, _IO_default_doallocate),
+ JUMP_INIT(read, _IO_default_read),
+ JUMP_INIT(write, _IO_default_write),
+ JUMP_INIT(seek, _IO_default_seek),
+ JUMP_INIT(close, _IO_default_close),
+ JUMP_INIT(stat, _IO_default_stat),
+ JUMP_INIT(showmanyc, _IO_default_showmanyc),
+ JUMP_INIT(imbue, _IO_default_imbue)
+};
+
+/* This function is called by regular vsprintf with maxlen set to -1,
+ and by vsprintf_chk with maxlen set to the size of the output
+ string. In the former case, _IO_str_chk_overflow will never be
+ called; in the latter case it will crash the program if the buffer
+ overflows. */
+
int
-__vsprintf_internal (char *string, const char *format, va_list args,
+__vsprintf_internal (char *string, size_t maxlen,
+ const char *format, va_list args,
unsigned int mode_flags)
{
_IO_strfile sf;
@@ -38,17 +77,22 @@ __vsprintf_internal (char *string, const char *format, va_list args,
sf._sbf._f._lock = NULL;
#endif
_IO_no_init (&sf._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
- _IO_JUMPS (&sf._sbf) = &_IO_str_jumps;
- _IO_str_init_static_internal (&sf, string, -1, string);
+ _IO_JUMPS (&sf._sbf) = &_IO_str_chk_jumps;
+ string[0] = '\0';
+ _IO_str_init_static_internal (&sf, string,
+ (maxlen == -1) ? -1 : maxlen - 1,
+ string);
+
ret = __vfprintf_internal (&sf._sbf._f, format, args, mode_flags);
- _IO_putc_unlocked ('\0', &sf._sbf._f);
+
+ *sf._sbf._f._IO_write_ptr = '\0';
return ret;
}
int
__vsprintf (char *string, const char *format, va_list args)
{
- return __vsprintf_internal (string, format, args, 0);
+ return __vsprintf_internal (string, -1, format, args, 0);
}
ldbl_strong_alias (__vsprintf, _IO_vsprintf)
@@ -90,7 +90,6 @@ typedef union
/* Bits for the _flags2 field. */
#define _IO_FLAGS2_MMAP 1
#define _IO_FLAGS2_NOTCANCEL 2
-#define _IO_FLAGS2_FORTIFY 4
#define _IO_FLAGS2_USER_WBUF 8
#define _IO_FLAGS2_NOCLOSE 32
#define _IO_FLAGS2_CLOEXEC 64
@@ -672,8 +672,13 @@ extern int __vdprintf_internal (int d, const char *format, va_list ap,
extern int __obstack_vprintf_internal (struct obstack *ob, const char *fmt,
va_list ap, unsigned int mode_flags);
-extern int __vsprintf_internal (char *string, const char *format, va_list ap,
+/* Note: __vsprintf_internal, unlike vsprintf, does take a maxlen argument,
+ because it's called by both vsprintf and vsprintf_chk. If maxlen is
+ not set to -1, overrunning the buffer will cause a prompt crash. */
+extern int __vsprintf_internal (char *string, size_t maxlen,
+ const char *format, va_list ap,
unsigned int mode_flags);
+
extern int __vsnprintf_internal (char *string, size_t maxlen,
const char *format, va_list ap,
unsigned int mode_flags);
@@ -788,26 +793,10 @@ _IO_acquire_lock_fct (FILE **p)
_IO_funlockfile (fp);
}
-static inline void
-__attribute__ ((__always_inline__))
-_IO_acquire_lock_clear_flags2_fct (FILE **p)
-{
- FILE *fp = *p;
- fp->_flags2 &= ~(_IO_FLAGS2_FORTIFY);
- if ((fp->_flags & _IO_USER_LOCK) == 0)
- _IO_funlockfile (fp);
-}
-
#if !defined _IO_MTSAFE_IO && IS_IN (libc)
# define _IO_acquire_lock(_fp) \
- do { \
- FILE *_IO_acquire_lock_file = NULL
-# define _IO_acquire_lock_clear_flags2(_fp) \
- do { \
- FILE *_IO_acquire_lock_file = (_fp)
+ do {
# define _IO_release_lock(_fp) \
- if (_IO_acquire_lock_file != NULL) \
- _IO_acquire_lock_file->_flags2 &= ~(_IO_FLAGS2_FORTIFY); \
} while (0)
#endif
@@ -27,7 +27,7 @@ __sprintf (char *s, const char *format, ...)
int done;
va_start (arg, format);
- done = __vsprintf_internal (s, format, arg, 0);
+ done = __vsprintf_internal (s, -1, format, arg, 0);
va_end (arg);
return done;
@@ -1285,8 +1285,6 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap, unsigned int mode_flags)
/* Temporarily honor environmental settings. */
if (__ldbl_is_dbl)
mode_flags |= PRINTF_LDBL_IS_DBL;
- if (s->_flags2 & _IO_FLAGS2_FORTIFY)
- mode_flags |= PRINTF_FORTIFY;
/* Orient the stream. */
#ifdef ORIENT
@@ -54,15 +54,8 @@ __libc_lock_define_recursive (typedef, _IO_lock_t)
__attribute__((cleanup (_IO_acquire_lock_fct))) \
= (_fp); \
_IO_flockfile (_IO_acquire_lock_file);
-# define _IO_acquire_lock_clear_flags2(_fp) \
- do { \
- FILE *_IO_acquire_lock_file \
- __attribute__((cleanup (_IO_acquire_lock_clear_flags2_fct))) \
- = (_fp); \
- _IO_flockfile (_IO_acquire_lock_file);
# else
# define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled
-# define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp)
# endif
# define _IO_release_lock(_fp) ; } while (0)
@@ -178,7 +178,7 @@ __nldbl___vsprintf (char *string, const char *fmt, va_list ap)
{
int done;
__no_long_double = 1;
- done = __vsprintf_internal (string, fmt, ap, 0);
+ done = __vsprintf_internal (string, -1, fmt, ap, 0);
__no_long_double = 0;
return done;
}
@@ -578,7 +578,7 @@ __nldbl___vfprintf_chk (FILE *s, int flag, const char *fmt, va_list ap)
{
int res;
set_no_long_double ();
- res = __vfprintf_chk (s, flag, fmt, ap);
+ res = __vfprintf_internal (s, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0);
clear_no_long_double ();
return res;
}
@@ -590,7 +590,7 @@ __nldbl___vfwprintf_chk (FILE *s, int flag, const wchar_t *fmt, va_list ap)
{
int res;
set_no_long_double ();
- res = __vfwprintf_chk (s, flag, fmt, ap);
+ res = __vfwprintf_internal (s, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0);
clear_no_long_double ();
return res;
}
@@ -608,9 +608,13 @@ attribute_compat_text_section
__nldbl___vsnprintf_chk (char *string, size_t maxlen, int flag, size_t slen,
const char *fmt, va_list ap)
{
+ if (__glibc_unlikely (slen < maxlen))
+ __chk_fail ();
+
int res;
__no_long_double = 1;
- res = __vsnprintf_chk (string, maxlen, flag, slen, fmt, ap);
+ res = __vsnprintf_internal (string, maxlen, fmt, ap,
+ (flag > 0) ? PRINTF_FORTIFY : 0);
__no_long_double = 0;
return res;
}
@@ -621,9 +625,13 @@ attribute_compat_text_section
__nldbl___vsprintf_chk (char *string, int flag, size_t slen, const char *fmt,
va_list ap)
{
+ if (slen == 0)
+ __chk_fail ();
+
int res;
__no_long_double = 1;
- res = __vsprintf_chk (string, flag, slen, fmt, ap);
+ res = __vsprintf_internal (string, slen, fmt, ap,
+ (flag > 0) ? PRINTF_FORTIFY : 0);
__no_long_double = 0;
return res;
}
@@ -634,9 +642,13 @@ attribute_compat_text_section
__nldbl___vswprintf_chk (wchar_t *string, size_t maxlen, int flag, size_t slen,
const wchar_t *fmt, va_list ap)
{
+ if (__glibc_unlikely (slen < maxlen))
+ __chk_fail ();
+
int res;
__no_long_double = 1;
- res = __vswprintf_chk (string, maxlen, flag, slen, fmt, ap);
+ res = __vswprintf_internal (string, maxlen, fmt, ap,
+ (flag > 0) ? PRINTF_FORTIFY : 0);
__no_long_double = 0;
return res;
}
@@ -669,7 +681,8 @@ __nldbl___vasprintf_chk (char **ptr, int flag, const char *fmt, va_list arg)
{
int res;
__no_long_double = 1;
- res = __vasprintf_chk (ptr, flag, fmt, arg);
+ res = __vasprintf_internal (ptr, fmt, arg,
+ (flag > 0) ? PRINTF_FORTIFY : 0);
__no_long_double = 0;
return res;
}
@@ -695,7 +708,7 @@ __nldbl___vdprintf_chk (int d, int flag, const char *fmt, va_list arg)
{
int res;
set_no_long_double ();
- res = __vdprintf_chk (d, flag, fmt, arg);
+ res = __vdprintf_internal (d, fmt, arg, (flag > 0) ? PRINTF_FORTIFY : 0);
clear_no_long_double ();
return res;
}
@@ -722,7 +735,8 @@ __nldbl___obstack_vprintf_chk (struct obstack *obstack, int flag,
{
int res;
__no_long_double = 1;
- res = __obstack_vprintf_chk (obstack, flag, fmt, arg);
+ res = __obstack_vprintf_internal (obstack, fmt, arg,
+ (flag > 0) ? PRINTF_FORTIFY : 0);
__no_long_double = 0;
return res;
}
@@ -94,15 +94,8 @@ typedef struct { int lock; int cnt; void *owner; } _IO_lock_t;
__attribute__((cleanup (_IO_acquire_lock_fct))) \
= (_fp); \
_IO_flockfile (_IO_acquire_lock_file);
-# define _IO_acquire_lock_clear_flags2(_fp) \
- do { \
- FILE *_IO_acquire_lock_file \
- __attribute__((cleanup (_IO_acquire_lock_clear_flags2_fct))) \
- = (_fp); \
- _IO_flockfile (_IO_acquire_lock_file);
# else
# define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled
-# define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp)
# endif
# define _IO_release_lock(_fp) ; } while (0)