diff options
Diffstat (limited to 'io')
| -rw-r--r-- | io/Versions | 3 | ||||
| -rw-r--r-- | io/bits/fcntl2.h | 155 | ||||
| -rw-r--r-- | io/fcntl.h | 8 | ||||
| -rw-r--r-- | io/open.c | 19 | ||||
| -rw-r--r-- | io/open64.c | 20 | ||||
| -rw-r--r-- | io/openat.c | 17 | ||||
| -rw-r--r-- | io/openat64.c | 17 |
7 files changed, 232 insertions, 7 deletions
diff --git a/io/Versions b/io/Versions index 9cc515796d..d603668f4f 100644 --- a/io/Versions +++ b/io/Versions @@ -116,4 +116,7 @@ libc { GLIBC_2.6 { utimensat; futimens; } + GLIBC_2.7 { + __open_2; __open64_2; __openat_2; __openat64_2; + } } diff --git a/io/bits/fcntl2.h b/io/bits/fcntl2.h new file mode 100644 index 0000000000..5f400aed72 --- /dev/null +++ b/io/bits/fcntl2.h @@ -0,0 +1,155 @@ +/* Checking macros for fcntl functions. + Copyright (C) 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. */ + +#ifndef _FCNTL_H +# error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead." +#endif + +/* Check that calls to open and openat with O_CREAT set have an + appropriate third/fourth parameter. */ +#ifndef __USE_FILE_OFFSET64 +extern int __open_2 (__const char *__path, int __oflag); +#else +extern int __REDIRECT (__open_2, (__const char *__file, int __oflag), + __open64_2) __nonnull ((1)); +#endif + +#define open(fname, flags, ...) \ + ({ int ___r; \ + /* If the compiler complains about an invalid type, excess elements, etc \ + in the initialization this means a paraleter of the wrong type has \ + been passed to open. */ \ + int ___arr[] = { __VA_ARGS__ }; \ + if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \ + { \ + /* If the compile complains about the size of this array type the \ + the mode parameter is missing since O_CREAT has been used. */ \ + typedef int __open_missing_mode[(flags & O_CREAT) != 0 \ + ? ((long int) sizeof (___arr) \ + - (long int) sizeof (int)) : 1]; \ + } \ + if (sizeof (___arr) == 0) \ + ___r = __open_2 (fname, flags); \ + else \ + { \ + /* If the compile complains about the size of this array type too \ + many parameters have been passed to open. */ \ + typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \ + ___r = open (fname, flags, ___arr[0]); \ + } \ + ___r; \ + }) + + +#ifdef __USE_LARGEFILE64 +extern int __open64_2 (__const char *__path, int __oflag); + +# define open64(fname, flags, ...) \ + ({ int ___r; \ + /* If the compiler complains about an invalid type, excess elements, etc \ + in the initialization this means a paraleter of the wrong type has \ + been passed to open64. */ \ + int ___arr[] = { __VA_ARGS__ }; \ + if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \ + { \ + /* If the compile complains about the size of this array type the \ + the mode parameter is missing since O_CREAT has been used. */ \ + typedef int __open_missing_mode[(flags & O_CREAT) != 0 \ + ? ((long int) sizeof (___arr) \ + - (long int) sizeof (int)) : 1]; \ + } \ + if (sizeof (___arr) == 0) \ + ___r = __open64_2 (fname, flags); \ + else \ + { \ + /* If the compile complains about the size of this array type too \ + many parameters have been passed to open64. */ \ + typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \ + ___r = open64 (fname, flags, ___arr[0]); \ + } \ + ___r; \ + }) +#endif + +#ifdef __USE_ATFILE +# ifndef __USE_FILE_OFFSET64 +extern int __openat_2 (int __fd, __const char *__path, int __oflag); +# else +extern int __REDIRECT (__openat_2, (int __fd, __const char *__file, + int __oflag), __openat64_2) + __nonnull ((1)); +# endif + +# define openat(fd, fname, flags, ...) \ + ({ int ___r; \ + /* If the compiler complains about an invalid type, excess elements, etc \ + in the initialization this means a paraleter of the wrong type has \ + been passed to openat. */ \ + int ___arr[] = { __VA_ARGS__ }; \ + if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \ + { \ + /* If the compile complains about the size of this array type the \ + the mode parameter is missing since O_CREAT has been used. */ \ + typedef int __open_missing_mode[(flags & O_CREAT) != 0 \ + ? ((long int) sizeof (___arr) \ + - (long int) sizeof (int)) : 1]; \ + } \ + if (sizeof (___arr) == 0) \ + ___r = __openat_2 (fd, fname, flags); \ + else \ + { \ + /* If the compile complains about the size of this array type too \ + many parameters have been passed to openat. */ \ + typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \ + ___r = openat (fd, fname, flags, ___arr[0]); \ + } \ + ___r; \ + }) + + +# ifdef __USE_LARGEFILE64 +extern int __openat64_2 (int __fd, __const char *__path, int __oflag); + +# define openat64(fd, fname, flags, ...) \ + ({ int ___r; \ + /* If the compiler complains about an invalid type, excess elements, etc \ + in the initialization this means a paraleter of the wrong type has \ + been passed to openat64. */ \ + int ___arr[] = { __VA_ARGS__ }; \ + if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \ + { \ + /* If the compile complains about the size of this array type the \ + the mode parameter is missing since O_CREAT has been used. */ \ + typedef int __open_missing_mode[(flags & O_CREAT) != 0 \ + ? ((long int) sizeof (___arr) \ + - (long int) sizeof (int)) : 1]; \ + } \ + if (sizeof (___arr) == 0) \ + ___r = __openat64_2 (fd, fname, flags); \ + else \ + { \ + /* If the compile complains about the size of this array type too \ + many parameters have been passed to openat. */ \ + typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \ + ___r = openat64 (fd, fname, flags, ___arr[0]); \ + } \ + ___r; \ + }) +# endif +#endif diff --git a/io/fcntl.h b/io/fcntl.h index 72a944b3d4..c89bf625bf 100644 --- a/io/fcntl.h +++ b/io/fcntl.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1991,1992,1994-2001,2003,2004,2005,2006 +/* Copyright (C) 1991,1992,1994-2001,2003,2004,2005,2006,2007 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -210,6 +210,12 @@ extern int posix_fallocate64 (int __fd, __off64_t __offset, __off64_t __len); # endif #endif + +/* Define some macros helping to catch common problems. */ +#if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus +# include <bits/fcntl2.h> +#endif + __END_DECLS #endif /* fcntl.h */ diff --git a/io/open.c b/io/open.c index 188110b3f3..c104406245 100644 --- a/io/open.c +++ b/io/open.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1995, 1996, 1997, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1991,1995,1996,1997,2002,2007 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 @@ -20,6 +20,9 @@ #include <fcntl.h> #include <stdarg.h> #include <stddef.h> +#include <stdio.h> + +extern char **__libc_argv attribute_hidden; /* Open FILE with access OFLAG. If OFLAG includes O_CREAT, a third argument is the file protection. */ @@ -51,4 +54,18 @@ libc_hidden_def (__open) stub_warning (open) weak_alias (__open, open) + + +int +__open_2 (file, oflag) + const char *file; + int oflag; +{ + if (oflag & O_CREAT) + __fortify_fail ("invalid open call: O_CREAT without mode"); + + return __open (file, oflag); +} +stub_warning (__open_2) + #include <stub-tag.h> diff --git a/io/open64.c b/io/open64.c index d9a38112ac..7056718922 100644 --- a/io/open64.c +++ b/io/open64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1995, 1996, 1997, 1999, 2000, 2002 +/* Copyright (C) 1991, 1995, 1996, 1997, 1999, 2000, 2002, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -21,7 +21,7 @@ #include <fcntl.h> #include <stdarg.h> #include <stddef.h> -#include <bp-sym.h> +#include <stdio.h> /* Open FILE with access OFLAG. If OFLAG includes O_CREAT, a third argument is the file protection. */ @@ -51,7 +51,21 @@ __libc_open64 (file, oflag) } strong_alias (__libc_open64, __open64) libc_hidden_def (__open64) -weak_alias (__libc_open64, BP_SYM (open64)) +weak_alias (__libc_open64, open64) stub_warning (open64) + + +int +__open64_2 (file, oflag) + const char *file; + int oflag; +{ + if (oflag & O_CREAT) + __fortify_fail ("invalid open64 call: O_CREAT without mode"); + + return __open64 (file, oflag); +} +stub_warning (__open64_2) + #include <stub-tag.h> diff --git a/io/openat.c b/io/openat.c index c65ad19c7a..98fa1a1d64 100644 --- a/io/openat.c +++ b/io/openat.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2006, 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 @@ -20,6 +20,7 @@ #include <fcntl.h> #include <stdarg.h> #include <stddef.h> +#include <stdio.h> #include <sys/stat.h> /* Open FILE with access OFLAG. Interpret relative paths relative to @@ -68,4 +69,18 @@ libc_hidden_def (__openat) weak_alias (__openat, openat) stub_warning (openat) + +int +__openat_2 (fd, file, oflag) + int fd; + const char *file; + int oflag; +{ + if (oflag & O_CREAT) + __fortify_fail ("invalid openat call: O_CREAT without mode"); + + return __openat (file, oflag); +} +stub_warning (__openat_2) + #include <stub-tag.h> diff --git a/io/openat64.c b/io/openat64.c index 830701a949..2d63490c65 100644 --- a/io/openat64.c +++ b/io/openat64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2006, 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 @@ -20,6 +20,7 @@ #include <fcntl.h> #include <stdarg.h> #include <stddef.h> +#include <stdio.h> #include <sys/stat.h> /* Open FILE with access OFLAG. Interpret relative paths relative to @@ -68,4 +69,18 @@ libc_hidden_def (__openat64) weak_alias (__openat64, openat64) stub_warning (openat64) + +int +__openat64_2 (fd, file, oflag) + int fd; + const char *file; + int oflag; +{ + if (oflag & O_CREAT) + __fortify_fail ("invalid openat64 call: O_CREAT without mode"); + + return __openat64 (file, oflag); +} +stub_warning (__openat_2) + #include <stub-tag.h> |