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mf-hooks2.c
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/* Mudflap: narrow-pointer bounds-checking by tree rewriting.
Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
Contributed by Frank Ch. Eigler <fche@redhat.com>
and Graydon Hoare <graydon@redhat.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file. (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)
GCC 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "config.h"
#ifndef HAVE_SOCKLEN_T
#define socklen_t int
#endif
/* These attempt to coax various unix flavours to declare all our
needed tidbits in the system headers. */
#if !defined(__FreeBSD__) && !defined(__APPLE__)
#define _POSIX_SOURCE
#endif /* Some BSDs break <sys/socket.h> if this is defined. */
#define _GNU_SOURCE
#define _XOPEN_SOURCE
#define _BSD_TYPES
#define __EXTENSIONS__
#define _ALL_SOURCE
#define _LARGE_FILE_API
#define _LARGEFILE64_SOURCE
#define _XOPEN_SOURCE_EXTENDED 1
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <time.h>
#include <ctype.h>
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_SYS_IPC_H
#include <sys/ipc.h>
#endif
#ifdef HAVE_SYS_SEM_H
#include <sys/sem.h>
#endif
#ifdef HAVE_SYS_SHM_H
#include <sys/shm.h>
#endif
#include "mf-runtime.h"
#include "mf-impl.h"
#ifdef _MUDFLAP
#error "Do not compile this file with -fmudflap!"
#endif
/* A bunch of independent stdlib/unistd hook functions, all
intercepted by mf-runtime.h macros. */
#ifndef HAVE_STRNLEN
static inline size_t (strnlen) (const char* str, size_t n)
{
const char *s;
for (s = str; n && *s; ++s, --n)
;
return (s - str);
}
#endif
/* str*,mem*,b* */
WRAPPER2(void *, memcpy, void *dest, const void *src, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(src, n, __MF_CHECK_READ, "memcpy source");
MF_VALIDATE_EXTENT(dest, n, __MF_CHECK_WRITE, "memcpy dest");
return memcpy (dest, src, n);
}
WRAPPER2(void *, memmove, void *dest, const void *src, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(src, n, __MF_CHECK_READ, "memmove src");
MF_VALIDATE_EXTENT(dest, n, __MF_CHECK_WRITE, "memmove dest");
return memmove (dest, src, n);
}
WRAPPER2(void *, memset, void *s, int c, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, n, __MF_CHECK_WRITE, "memset dest");
return memset (s, c, n);
}
WRAPPER2(int, memcmp, const void *s1, const void *s2, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s1, n, __MF_CHECK_READ, "memcmp 1st arg");
MF_VALIDATE_EXTENT(s2, n, __MF_CHECK_READ, "memcmp 2nd arg");
return memcmp (s1, s2, n);
}
WRAPPER2(void *, memchr, const void *s, int c, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, n, __MF_CHECK_READ, "memchr region");
return memchr (s, c, n);
}
#ifdef HAVE_MEMRCHR
WRAPPER2(void *, memrchr, const void *s, int c, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, n, __MF_CHECK_READ, "memrchr region");
return memrchr (s, c, n);
}
#endif
WRAPPER2(char *, strcpy, char *dest, const char *src)
{
/* nb: just because strlen(src) == n doesn't mean (src + n) or (src + n +
1) are valid pointers. the allocated object might have size < n.
check anyways. */
size_t n = strlen (src);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(src, CLAMPADD(n, 1), __MF_CHECK_READ, "strcpy src");
MF_VALIDATE_EXTENT(dest, CLAMPADD(n, 1), __MF_CHECK_WRITE, "strcpy dest");
return strcpy (dest, src);
}
#ifdef HAVE_STRNCPY
WRAPPER2(char *, strncpy, char *dest, const char *src, size_t n)
{
size_t len = strnlen (src, n);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(src, len, __MF_CHECK_READ, "strncpy src");
MF_VALIDATE_EXTENT(dest, len, __MF_CHECK_WRITE, "strncpy dest"); /* nb: strNcpy */
return strncpy (dest, src, n);
}
#endif
WRAPPER2(char *, strcat, char *dest, const char *src)
{
size_t dest_sz;
size_t src_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
dest_sz = strlen (dest);
src_sz = strlen (src);
MF_VALIDATE_EXTENT(src, CLAMPADD(src_sz, 1), __MF_CHECK_READ, "strcat src");
MF_VALIDATE_EXTENT(dest, CLAMPADD(dest_sz, CLAMPADD(src_sz, 1)),
__MF_CHECK_WRITE, "strcat dest");
return strcat (dest, src);
}
WRAPPER2(char *, strncat, char *dest, const char *src, size_t n)
{
/* nb: validating the extents (s,n) might be a mistake for two reasons.
(1) the string s might be shorter than n chars, and n is just a
poor choice by the programmer. this is not a "true" error in the
sense that the call to strncat would still be ok.
(2) we could try to compensate for case (1) by calling strlen(s) and
using that as a bound for the extent to verify, but strlen might fall off
the end of a non-terminated string, leading to a false positive.
so we will call strnlen(s,n) and use that as a bound.
if strnlen returns a length beyond the end of the registered extent
associated with s, there is an error: the programmer's estimate for n is
too large _AND_ the string s is unterminated, in which case they'd be
about to touch memory they don't own while calling strncat.
this same logic applies to further uses of strnlen later down in this
file. */
size_t src_sz;
size_t dest_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
src_sz = strnlen (src, n);
dest_sz = strnlen (dest, n);
MF_VALIDATE_EXTENT(src, src_sz, __MF_CHECK_READ, "strncat src");
MF_VALIDATE_EXTENT(dest, (CLAMPADD(dest_sz, CLAMPADD(src_sz, 1))),
__MF_CHECK_WRITE, "strncat dest");
return strncat (dest, src, n);
}
WRAPPER2(int, strcmp, const char *s1, const char *s2)
{
size_t s1_sz;
size_t s2_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
s1_sz = strlen (s1);
s2_sz = strlen (s2);
MF_VALIDATE_EXTENT(s1, CLAMPADD(s1_sz, 1), __MF_CHECK_READ, "strcmp 1st arg");
MF_VALIDATE_EXTENT(s2, CLAMPADD(s2_sz, 1), __MF_CHECK_WRITE, "strcmp 2nd arg");
return strcmp (s1, s2);
}
WRAPPER2(int, strcasecmp, const char *s1, const char *s2)
{
size_t s1_sz;
size_t s2_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
s1_sz = strlen (s1);
s2_sz = strlen (s2);
MF_VALIDATE_EXTENT(s1, CLAMPADD(s1_sz, 1), __MF_CHECK_READ, "strcasecmp 1st arg");
MF_VALIDATE_EXTENT(s2, CLAMPADD(s2_sz, 1), __MF_CHECK_READ, "strcasecmp 2nd arg");
return strcasecmp (s1, s2);
}
WRAPPER2(int, strncmp, const char *s1, const char *s2, size_t n)
{
size_t s1_sz;
size_t s2_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
s1_sz = strnlen (s1, n);
s2_sz = strnlen (s2, n);
MF_VALIDATE_EXTENT(s1, s1_sz, __MF_CHECK_READ, "strncmp 1st arg");
MF_VALIDATE_EXTENT(s2, s2_sz, __MF_CHECK_READ, "strncmp 2nd arg");
return strncmp (s1, s2, n);
}
WRAPPER2(int, strncasecmp, const char *s1, const char *s2, size_t n)
{
size_t s1_sz;
size_t s2_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
s1_sz = strnlen (s1, n);
s2_sz = strnlen (s2, n);
MF_VALIDATE_EXTENT(s1, s1_sz, __MF_CHECK_READ, "strncasecmp 1st arg");
MF_VALIDATE_EXTENT(s2, s2_sz, __MF_CHECK_READ, "strncasecmp 2nd arg");
return strncasecmp (s1, s2, n);
}
WRAPPER2(char *, strdup, const char *s)
{
DECLARE(void *, malloc, size_t sz);
char *result;
size_t n = strlen (s);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, CLAMPADD(n,1), __MF_CHECK_READ, "strdup region");
result = (char *)CALL_REAL(malloc,
CLAMPADD(CLAMPADD(n,1),
CLAMPADD(__mf_opts.crumple_zone,
__mf_opts.crumple_zone)));
if (UNLIKELY(! result)) return result;
result += __mf_opts.crumple_zone;
memcpy (result, s, n);
result[n] = '\0';
__mf_register (result, CLAMPADD(n,1), __MF_TYPE_HEAP_I, "strdup region");
return result;
}
WRAPPER2(char *, strndup, const char *s, size_t n)
{
DECLARE(void *, malloc, size_t sz);
char *result;
size_t sz = strnlen (s, n);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, sz, __MF_CHECK_READ, "strndup region"); /* nb: strNdup */
/* note: strndup still adds a \0, even with the N limit! */
result = (char *)CALL_REAL(malloc,
CLAMPADD(CLAMPADD(n,1),
CLAMPADD(__mf_opts.crumple_zone,
__mf_opts.crumple_zone)));
if (UNLIKELY(! result)) return result;
result += __mf_opts.crumple_zone;
memcpy (result, s, n);
result[n] = '\0';
__mf_register (result, CLAMPADD(n,1), __MF_TYPE_HEAP_I, "strndup region");
return result;
}
WRAPPER2(char *, strchr, const char *s, int c)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (s);
MF_VALIDATE_EXTENT(s, CLAMPADD(n,1), __MF_CHECK_READ, "strchr region");
return strchr (s, c);
}
WRAPPER2(char *, strrchr, const char *s, int c)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (s);
MF_VALIDATE_EXTENT(s, CLAMPADD(n,1), __MF_CHECK_READ, "strrchr region");
return strrchr (s, c);
}
WRAPPER2(char *, strstr, const char *haystack, const char *needle)
{
size_t haystack_sz;
size_t needle_sz;
TRACE ("%s\n", __PRETTY_FUNCTION__);
haystack_sz = strlen (haystack);
needle_sz = strlen (needle);
MF_VALIDATE_EXTENT(haystack, CLAMPADD(haystack_sz, 1), __MF_CHECK_READ, "strstr haystack");
MF_VALIDATE_EXTENT(needle, CLAMPADD(needle_sz, 1), __MF_CHECK_READ, "strstr needle");
return strstr (haystack, needle);
}
#ifdef HAVE_MEMMEM
WRAPPER2(void *, memmem,
const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(haystack, haystacklen, __MF_CHECK_READ, "memmem haystack");
MF_VALIDATE_EXTENT(needle, needlelen, __MF_CHECK_READ, "memmem needle");
return memmem (haystack, haystacklen, needle, needlelen);
}
#endif
WRAPPER2(size_t, strlen, const char *s)
{
size_t result = strlen (s);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, CLAMPADD(result, 1), __MF_CHECK_READ, "strlen region");
return result;
}
WRAPPER2(size_t, strnlen, const char *s, size_t n)
{
size_t result = strnlen (s, n);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, result, __MF_CHECK_READ, "strnlen region");
return result;
}
WRAPPER2(void, bzero, void *s, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, n, __MF_CHECK_WRITE, "bzero region");
bzero (s, n);
}
#undef bcopy
WRAPPER2(void, bcopy, const void *src, void *dest, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(src, n, __MF_CHECK_READ, "bcopy src");
MF_VALIDATE_EXTENT(dest, n, __MF_CHECK_WRITE, "bcopy dest");
bcopy (src, dest, n);
}
#undef bcmp
WRAPPER2(int, bcmp, const void *s1, const void *s2, size_t n)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s1, n, __MF_CHECK_READ, "bcmp 1st arg");
MF_VALIDATE_EXTENT(s2, n, __MF_CHECK_READ, "bcmp 2nd arg");
return bcmp (s1, s2, n);
}
WRAPPER2(char *, index, const char *s, int c)
{
size_t n = strlen (s);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, CLAMPADD(n, 1), __MF_CHECK_READ, "index region");
return index (s, c);
}
WRAPPER2(char *, rindex, const char *s, int c)
{
size_t n = strlen (s);
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(s, CLAMPADD(n, 1), __MF_CHECK_READ, "rindex region");
return rindex (s, c);
}
/* XXX: stpcpy, memccpy */
/* XXX: *printf,*scanf */
/* XXX: setjmp, longjmp */
WRAPPER2(char *, asctime, struct tm *tm)
{
static char *reg_result = NULL;
char *result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(tm, sizeof (struct tm), __MF_CHECK_READ, "asctime tm");
result = asctime (tm);
if (reg_result == NULL)
{
__mf_register (result, strlen (result)+1, __MF_TYPE_STATIC, "asctime string");
reg_result = result;
}
return result;
}
WRAPPER2(char *, ctime, const time_t *timep)
{
static char *reg_result = NULL;
char *result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(timep, sizeof (time_t), __MF_CHECK_READ, "ctime time");
result = ctime (timep);
if (reg_result == NULL)
{
/* XXX: what if asctime and ctime return the same static ptr? */
__mf_register (result, strlen (result)+1, __MF_TYPE_STATIC, "ctime string");
reg_result = result;
}
return result;
}
WRAPPER2(struct tm*, localtime, const time_t *timep)
{
static struct tm *reg_result = NULL;
struct tm *result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(timep, sizeof (time_t), __MF_CHECK_READ, "localtime time");
result = localtime (timep);
if (reg_result == NULL)
{
__mf_register (result, sizeof (struct tm), __MF_TYPE_STATIC, "localtime tm");
reg_result = result;
}
return result;
}
WRAPPER2(struct tm*, gmtime, const time_t *timep)
{
static struct tm *reg_result = NULL;
struct tm *result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT(timep, sizeof (time_t), __MF_CHECK_READ, "gmtime time");
result = gmtime (timep);
if (reg_result == NULL)
{
__mf_register (result, sizeof (struct tm), __MF_TYPE_STATIC, "gmtime tm");
reg_result = result;
}
return result;
}
/* EL start */
/* The following indicate if the result of the corresponding function
* should be explicitly un/registered by the wrapper
*/
#define MF_REGISTER_strerror __MF_TYPE_STATIC
#undef MF_REGISTER_fopen
#define MF_RESULT_SIZE_fopen (sizeof (FILE))
#undef MF_REGISTER_opendir
#define MF_RESULT_SIZE_opendir 0 /* (sizeof (DIR)) */
#undef MF_REGISTER_readdir
#define MF_REGISTER_gethostbyname __MF_TYPE_STATIC
#undef MF_REGISTER_gethostbyname_items
#undef MF_REGISTER_dlopen
#undef MF_REGISTER_dlerror
#undef MF_REGISTER_dlsym
#define MF_REGISTER_shmat __MF_TYPE_GUESS
#include <time.h>
WRAPPER2(time_t, time, time_t *timep)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
if (NULL != timep)
MF_VALIDATE_EXTENT (timep, sizeof (*timep), __MF_CHECK_WRITE,
"time timep");
return time (timep);
}
WRAPPER2(char *, strerror, int errnum)
{
char *p;
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
p = strerror (errnum);
if (NULL != p) {
n = strlen (p);
n = CLAMPADD(n, 1);
#ifdef MF_REGISTER_strerror
__mf_register (p, n, MF_REGISTER_strerror, "strerror result");
#endif
MF_VALIDATE_EXTENT (p, n, __MF_CHECK_WRITE, "strerror result");
}
return p;
}
WRAPPER2(FILE *, fopen, const char *path, const char *mode)
{
size_t n;
FILE *p;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "fopen path");
n = strlen (mode);
MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "fopen mode");
p = fopen (path, mode);
if (NULL != p) {
#ifdef MF_REGISTER_fopen
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "fopen result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "fopen result");
}
return p;
}
#ifdef HAVE_FOPEN64
WRAPPER2(FILE *, fopen64, const char *path, const char *mode)
{
size_t n;
FILE *p;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "fopen64 path");
n = strlen (mode);
MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "fopen64 mode");
p = fopen64 (path, mode);
if (NULL != p) {
#ifdef MF_REGISTER_fopen
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "fopen64 result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "fopen64 result");
}
return p;
}
#endif
WRAPPER2(int, fclose, FILE *stream)
{
int resp;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fclose stream");
resp = fclose (stream);
#ifdef MF_REGISTER_fopen
__mf_unregister (stream, sizeof (*stream), MF_REGISTER_fopen);
#endif
return resp;
}
WRAPPER2(size_t, fread, void *ptr, size_t size, size_t nmemb, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fread stream");
MF_VALIDATE_EXTENT (ptr, size * nmemb, __MF_CHECK_WRITE, "fread buffer");
return fread (ptr, size, nmemb, stream);
}
WRAPPER2(size_t, fwrite, const void *ptr, size_t size, size_t nmemb,
FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fwrite stream");
MF_VALIDATE_EXTENT (ptr, size * nmemb, __MF_CHECK_READ, "fwrite buffer");
return fwrite (ptr, size, nmemb, stream);
}
WRAPPER2(int, fgetc, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fgetc stream");
return fgetc (stream);
}
WRAPPER2(char *, fgets, char *s, int size, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fgets stream");
MF_VALIDATE_EXTENT (s, size, __MF_CHECK_WRITE, "fgets buffer");
return fgets (s, size, stream);
}
WRAPPER2(int, getc, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"getc stream");
return getc (stream);
}
WRAPPER2(char *, gets, char *s)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (s, 1, __MF_CHECK_WRITE, "gets buffer");
/* Avoid link-time warning... */
s = fgets (s, INT_MAX, stdin);
if (NULL != s) { /* better late than never */
size_t n = strlen (s);
MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_WRITE, "gets buffer");
}
return s;
}
WRAPPER2(int, ungetc, int c, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"ungetc stream");
return ungetc (c, stream);
}
WRAPPER2(int, fputc, int c, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fputc stream");
return fputc (c, stream);
}
WRAPPER2(int, fputs, const char *s, FILE *stream)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (s);
MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_READ, "fputs buffer");
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fputs stream");
return fputs (s, stream);
}
WRAPPER2(int, putc, int c, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"putc stream");
return putc (c, stream);
}
WRAPPER2(int, puts, const char *s)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (s);
MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_READ, "puts buffer");
return puts (s);
}
WRAPPER2(void, clearerr, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"clearerr stream");
clearerr (stream);
}
WRAPPER2(int, feof, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"feof stream");
return feof (stream);
}
WRAPPER2(int, ferror, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"ferror stream");
return ferror (stream);
}
WRAPPER2(int, fileno, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fileno stream");
return fileno (stream);
}
WRAPPER2(int, printf, const char *format, ...)
{
size_t n;
va_list ap;
int result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"printf format");
va_start (ap, format);
result = vprintf (format, ap);
va_end (ap);
return result;
}
WRAPPER2(int, fprintf, FILE *stream, const char *format, ...)
{
size_t n;
va_list ap;
int result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fprintf stream");
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"fprintf format");
va_start (ap, format);
result = vfprintf (stream, format, ap);
va_end (ap);
return result;
}
WRAPPER2(int, sprintf, char *str, const char *format, ...)
{
size_t n;
va_list ap;
int result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (str, 1, __MF_CHECK_WRITE, "sprintf str");
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"sprintf format");
va_start (ap, format);
result = vsprintf (str, format, ap);
va_end (ap);
n = strlen (str);
MF_VALIDATE_EXTENT (str, CLAMPADD(n, 1), __MF_CHECK_WRITE, "sprintf str");
return result;
}
WRAPPER2(int, snprintf, char *str, size_t size, const char *format, ...)
{
size_t n;
va_list ap;
int result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (str, size, __MF_CHECK_WRITE, "snprintf str");
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"snprintf format");
va_start (ap, format);
result = vsnprintf (str, size, format, ap);
va_end (ap);
return result;
}
WRAPPER2(int, vprintf, const char *format, va_list ap)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"vprintf format");
return vprintf (format, ap);
}
WRAPPER2(int, vfprintf, FILE *stream, const char *format, va_list ap)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"vfprintf stream");
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"vfprintf format");
return vfprintf (stream, format, ap);
}
WRAPPER2(int, vsprintf, char *str, const char *format, va_list ap)
{
size_t n;
int result;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (str, 1, __MF_CHECK_WRITE, "vsprintf str");
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"vsprintf format");
result = vsprintf (str, format, ap);
n = strlen (str);
MF_VALIDATE_EXTENT (str, CLAMPADD(n, 1), __MF_CHECK_WRITE, "vsprintf str");
return result;
}
WRAPPER2(int, vsnprintf, char *str, size_t size, const char *format,
va_list ap)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (str, size, __MF_CHECK_WRITE, "vsnprintf str");
n = strlen (format);
MF_VALIDATE_EXTENT (format, CLAMPADD(n, 1), __MF_CHECK_READ,
"vsnprintf format");
return vsnprintf (str, size, format, ap);
}
WRAPPER2(int , access, const char *path, int mode)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "access path");
return access (path, mode);
}
WRAPPER2(int , remove, const char *path)
{
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "remove path");
return remove (path);
}
WRAPPER2(int, fflush, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fflush stream");
return fflush (stream);
}
WRAPPER2(int, fseek, FILE *stream, long offset, int whence)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fseek stream");
return fseek (stream, offset, whence);
}
#ifdef HAVE_FSEEKO64
WRAPPER2(int, fseeko64, FILE *stream, off64_t offset, int whence)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fseeko64 stream");
return fseeko64 (stream, offset, whence);
}
#endif
WRAPPER2(long, ftell, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"ftell stream");
return ftell (stream);
}
#ifdef HAVE_FTELLO64
WRAPPER2(off64_t, ftello64, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"ftello64 stream");
return ftello64 (stream);
}
#endif
WRAPPER2(void, rewind, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"rewind stream");
rewind (stream);
}
WRAPPER2(int, fgetpos, FILE *stream, fpos_t *pos)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fgetpos stream");
MF_VALIDATE_EXTENT (pos, sizeof (*pos), __MF_CHECK_WRITE, "fgetpos pos");
return fgetpos (stream, pos);
}
WRAPPER2(int, fsetpos, FILE *stream, fpos_t *pos)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fsetpos stream");
MF_VALIDATE_EXTENT (pos, sizeof (*pos), __MF_CHECK_READ, "fsetpos pos");
return fsetpos (stream, pos);