diff options
Diffstat (limited to 'debug')
| -rw-r--r-- | debug/Makefile | 4 | ||||
| -rw-r--r-- | debug/Versions | 3 | ||||
| -rw-r--r-- | debug/fread_u_chk.c | 54 | ||||
| -rw-r--r-- | debug/tst-chk1.c | 71 |
4 files changed, 130 insertions, 2 deletions
diff --git a/debug/Makefile b/debug/Makefile index c6cc588b90..18905c366f 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 5c87af27c1..31c1e83a61 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 0000000000..72a007e08b --- /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 993dab63b2..26ace28970 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 |