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-rw-r--r--ChangeLog16
-rw-r--r--debug/Makefile4
-rw-r--r--debug/Versions3
-rw-r--r--debug/fread_u_chk.c54
-rw-r--r--debug/tst-chk1.c71
-rw-r--r--libio/bits/stdio2.h67
6 files changed, 213 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index bde760b..95a4b83 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2007-08-28 Jakub Jelinek <jakub@redhat.com>
+
+ * libio/bits/stdio2.h (__fread_chk, __fread_unlocked_chk): New
+ prototypes.
+ (__fread_alias, __fread_unlocked_alias): New aliases.
+ (fread): New extern inline.
+ (fread_unlocked): Likewise. Undef macro before definition of
+ the inline function.
+ * debug/Makefile (routines): Add fread_chk and fread_u_chk.
+ (CFLAGS-fread_chk.c, CFLAGS-fread_u_chk.c): Add.
+ * debug/Versions (libc): Export __fread_chk@@GLIBC_2.7
+ and __fread_unlocked_chk@@GLIBC_2.7.
+ * debug/fread_chk.c: New file.
+ * debug/fread_u_chk.c: New file.
+ * debug/tst-chk1.c (do_test): Add fread and fread_unlocked tests.
+
2007-08-27 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/syscalls.list
diff --git a/debug/Makefile b/debug/Makefile
index c6cc588..18905c3 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -32,7 +32,7 @@ routines = backtrace backtracesyms backtracesymsfd noophooks \
gets_chk chk_fail readonly-area fgets_chk fgets_u_chk \
read_chk pread_chk pread64_chk recv_chk recvfrom_chk \
readlink_chk readlinkat_chk getwd_chk getcwd_chk \
- realpath_chk ptsname_r_chk \
+ realpath_chk ptsname_r_chk fread_chk fread_u_chk \
wctomb_chk wcscpy_chk wmemcpy_chk wmemmove_chk wmempcpy_chk \
wcpcpy_chk wcsncpy_chk wcscat_chk wcsncat_chk wmemset_chk \
wcpncpy_chk \
@@ -58,6 +58,8 @@ CFLAGS-vfprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
CFLAGS-gets_chk.c = -D_IO_MTSAFE_IO $(exceptions)
CFLAGS-fgets_chk.c = -D_IO_MTSAFE_IO $(exceptions)
CFLAGS-fgets_u_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-fread_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-fread_u_chk.c = -D_IO_MTSAFE_IO $(exceptions)
CFLAGS-swprintf_chk.c = -D_IO_MTSAFE_IO
CFLAGS-vswprintf_chk.c = -D_IO_MTSAFE_IO
CFLAGS-wprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
diff --git a/debug/Versions b/debug/Versions
index 5c87af2..31c1e83 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -39,4 +39,7 @@ libc {
GLIBC_2.5 {
__readlinkat_chk;
}
+ GLIBC_2.7 {
+ __fread_chk; __fread_unlocked_chk;
+ }
}
diff --git a/debug/fread_u_chk.c b/debug/fread_u_chk.c
new file mode 100644
index 0000000..72a007e
--- /dev/null
+++ b/debug/fread_u_chk.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1993, 1995, 1997, 1998, 1999, 2002, 2003, 2007
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA.
+
+ As a special exception, if you link the code in this file with
+ files compiled with a GNU compiler to produce an executable,
+ that does not cause the resulting executable to be covered by
+ the GNU Lesser General Public License. This exception does not
+ however invalidate any other reasons why the executable file
+ might be covered by the GNU Lesser General Public License.
+ This exception applies to code released by its copyright holders
+ in files containing the exception. */
+
+#include "libioP.h"
+#include <stdio.h>
+
+size_t
+__fread_unlocked_chk (void *__restrict ptr, size_t ptrlen,
+ size_t size, size_t n, FILE *__restrict stream)
+{
+ size_t bytes_requested = size * n;
+ if (__builtin_expect ((n | size)
+ >= (((size_t) 1) << (8 * sizeof (size_t) / 2)), 0))
+ {
+ if (size != 0 && bytes_requested / size != n)
+ __chk_fail ();
+ }
+
+ if (__builtin_expect (bytes_requested > ptrlen, 0))
+ __chk_fail ();
+
+ CHECK_FILE (stream, 0);
+ if (bytes_requested == 0)
+ return 0;
+
+ size_t bytes_read
+ = INTUSE(_IO_sgetn) (stream, (char *) ptr, bytes_requested);
+ return bytes_requested == bytes_read ? n : bytes_read / size;
+}
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index 993dab6..26ace28 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
@@ -746,6 +746,75 @@ do_test (void)
CHK_FAIL_END
#endif
+ rewind (stdin);
+
+ if (fread (buf, 1, sizeof (buf), stdin) != sizeof (buf)
+ || memcmp (buf, "abcdefgh\nA", 10))
+ FAIL ();
+ if (fread (buf, sizeof (buf), 1, stdin) != 1
+ || memcmp (buf, "BCDEFGHI\na", 10))
+ FAIL ();
+
+ rewind (stdin);
+
+ if (fread (buf, l0 + 1, sizeof (buf), stdin) != sizeof (buf)
+ || memcmp (buf, "abcdefgh\nA", 10))
+ FAIL ();
+ if (fread (buf, sizeof (buf), l0 + 1, stdin) != 1
+ || memcmp (buf, "BCDEFGHI\na", 10))
+ FAIL ();
+
+#if __USE_FORTIFY_LEVEL >= 1
+ CHK_FAIL_START
+ if (fread (buf, 1, sizeof (buf) + 1, stdin) != sizeof (buf) + 1)
+ FAIL ();
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ if (fread (buf, sizeof (buf) + 1, l0 + 1, stdin) != 1)
+ FAIL ();
+ CHK_FAIL_END
+#endif
+
+ rewind (stdin);
+
+ if (fread_unlocked (buf, 1, sizeof (buf), stdin) != sizeof (buf)
+ || memcmp (buf, "abcdefgh\nA", 10))
+ FAIL ();
+ if (fread_unlocked (buf, sizeof (buf), 1, stdin) != 1
+ || memcmp (buf, "BCDEFGHI\na", 10))
+ FAIL ();
+
+ rewind (stdin);
+
+ if (fread_unlocked (buf, 1, 4, stdin) != 4
+ || memcmp (buf, "abcdFGHI\na", 10))
+ FAIL ();
+ if (fread_unlocked (buf, 4, 1, stdin) != 1
+ || memcmp (buf, "efghFGHI\na", 10))
+ FAIL ();
+
+ rewind (stdin);
+
+ if (fread_unlocked (buf, l0 + 1, sizeof (buf), stdin) != sizeof (buf)
+ || memcmp (buf, "abcdefgh\nA", 10))
+ FAIL ();
+ if (fread_unlocked (buf, sizeof (buf), l0 + 1, stdin) != 1
+ || memcmp (buf, "BCDEFGHI\na", 10))
+ FAIL ();
+
+#if __USE_FORTIFY_LEVEL >= 1
+ CHK_FAIL_START
+ if (fread_unlocked (buf, 1, sizeof (buf) + 1, stdin) != sizeof (buf) + 1)
+ FAIL ();
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ if (fread_unlocked (buf, sizeof (buf) + 1, l0 + 1, stdin) != 1)
+ FAIL ();
+ CHK_FAIL_END
+#endif
+
lseek (fileno (stdin), 0, SEEK_SET);
if (read (fileno (stdin), buf, sizeof (buf) - 1) != sizeof (buf) - 1
diff --git a/libio/bits/stdio2.h b/libio/bits/stdio2.h
index 924a481..89f5770 100644
--- a/libio/bits/stdio2.h
+++ b/libio/bits/stdio2.h
@@ -98,6 +98,27 @@ fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
return __fgets_alias (__s, __n, __stream);
}
+extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
+ size_t __size, size_t __n,
+ FILE *__restrict __stream) __wur;
+extern size_t __REDIRECT (__fread_alias,
+ (void *__restrict __ptr, size_t __size,
+ size_t __n, FILE *__restrict __stream),
+ fread) __wur;
+
+__extern_always_inline __wur size_t
+fread (void *__restrict __ptr, size_t __size, size_t __n,
+ FILE *__restrict __stream)
+{
+ if (__bos0 (__ptr) != (size_t) -1
+ && (!__builtin_constant_p (__size)
+ || !__builtin_constant_p (__n)
+ || (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))
+ || __size * __n > __bos0 (__ptr)))
+ return __fread_chk (__ptr, __bos0 (__ptr), __size, __n, __stream);
+ return __fread_alias (__ptr, __size, __n, __stream);
+}
+
#ifdef __USE_GNU
extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
int __n, FILE *__restrict __stream) __wur;
@@ -114,3 +135,49 @@ fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
return __fgets_unlocked_alias (__s, __n, __stream);
}
#endif
+
+#ifdef __USE_MISC
+# undef fread_unlocked
+extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen,
+ size_t __size, size_t __n,
+ FILE *__restrict __stream) __wur;
+extern size_t __REDIRECT (__fread_unlocked_alias,
+ (void *__restrict __ptr, size_t __size,
+ size_t __n, FILE *__restrict __stream),
+ fread_unlocked) __wur;
+
+__extern_always_inline __wur size_t
+fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n,
+ FILE *__restrict __stream)
+{
+ if (__bos0 (__ptr) != (size_t) -1
+ && (!__builtin_constant_p (__size)
+ || !__builtin_constant_p (__n)
+ || (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))
+ || __size * __n > __bos0 (__ptr)))
+ return __fread_unlocked_chk (__ptr, __bos0 (__ptr), __size, __n, __stream);
+
+# ifdef __USE_EXTERN_INLINES
+ if (__builtin_constant_p (__size)
+ && __builtin_constant_p (__n)
+ && (__size | __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2))
+ && __size * __n <= 8)
+ {
+ size_t __cnt = __size * __n;
+ char *__cptr = (char *) __ptr;
+ if (__cnt == 0)
+ return 0;
+
+ for (; __cnt > 0; --__cnt)
+ {
+ int __c = _IO_getc_unlocked (__stream);
+ if (__c == EOF)
+ break;
+ *__cptr++ = __c;
+ }
+ return (__cptr - (char *) __ptr) / __size;
+ }
+# endif
+ return __fread_unlocked_alias (__ptr, __size, __n, __stream);
+}
+#endif
generated by cgit v1.1 at 2024-12-26 06:17:33 +0000