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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libmudflap/] [mf-hooks2.c] - Rev 400
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/* Mudflap: narrow-pointer bounds-checking by tree rewriting. Copyright (C) 2002, 2003, 2004, 2009 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 3, or (at your option) any later version. 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. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ #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_DLFCN_H #include <dlfcn.h> #endif #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 #ifdef HAVE_PWD_H #include <pwd.h> #endif #ifdef HAVE_GRP_H #include <grp.h> #endif #ifdef HAVE_MNTENT_H #include <mntent.h> #endif #ifdef HAVE_SYS_SOCKET_H #include <sys/socket.h> #endif #ifdef HAVE_NETINET_IN_H #include <netinet/in.h> #endif #ifdef HAVE_ARPA_INET_H #include <arpa/inet.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 */ #ifdef __FreeBSD__ #define MF_REGISTER_fopen __MF_TYPE_STATIC #else #undef MF_REGISTER_fopen #endif #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; static char * last_strerror = NULL; TRACE ("%s\n", __PRETTY_FUNCTION__); p = strerror (errnum); if (last_strerror != NULL) __mf_unregister (last_strerror, 0, __MF_TYPE_STATIC); if (NULL != p) __mf_register (p, strlen (p) + 1, __MF_TYPE_STATIC, "strerror result"); last_strerror = p; return p; } /* An auxiliary data structure for tracking the hand-made stdio buffers we generate during the fopen/fopen64 hooks. In a civilized language, this would be a simple dynamically sized FILE*->char* lookup table, but this is C and we get to do it by hand. */ struct mf_filebuffer { FILE *file; char *buffer; struct mf_filebuffer *next; }; static struct mf_filebuffer *mf_filebuffers = NULL; static void mkbuffer (FILE *f) { /* Reset any buffer automatically provided by libc, since this may have been done via mechanisms that libmudflap couldn't intercept. */ int rc; size_t bufsize = BUFSIZ; int bufmode; char *buffer = malloc (bufsize); struct mf_filebuffer *b = malloc (sizeof (struct mf_filebuffer)); assert ((buffer != NULL) && (b != NULL)); /* Link it into list. */ b->file = f; b->buffer = buffer; b->next = mf_filebuffers; mf_filebuffers = b; /* Determine how the file is supposed to be buffered at the moment. */ bufmode = fileno (f) == 2 ? _IONBF : (isatty (fileno (f)) ? _IOLBF : _IOFBF); rc = setvbuf (f, buffer, bufmode, bufsize); assert (rc == 0); } static void unmkbuffer (FILE *f) { struct mf_filebuffer *b = mf_filebuffers; struct mf_filebuffer **pb = & mf_filebuffers; while (b != NULL) { if (b->file == f) { *pb = b->next; free (b->buffer); free (b); return; } pb = & b->next; b = b->next; } } 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"); mkbuffer (p); } return p; } WRAPPER2(int, setvbuf, FILE *stream, char *buf, int mode, size_t size) { int rc = 0; TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE, "setvbuf stream"); unmkbuffer (stream); if (buf != NULL) MF_VALIDATE_EXTENT (buf, size, __MF_CHECK_WRITE, "setvbuf buffer"); /* Override the user only if it's an auto-allocated buffer request. Otherwise assume that the supplied buffer is already known to libmudflap. */ if ((buf == NULL) && ((mode == _IOFBF) || (mode == _IOLBF))) mkbuffer (stream); else rc = setvbuf (stream, buf, mode, size); return rc; } #ifdef HAVE_SETBUF WRAPPER2(int, setbuf, FILE* stream, char *buf) { return __mfwrap_setvbuf (stream, buf, buf ? _IOFBF : _IONBF, BUFSIZ); } #endif #ifdef HAVE_SETBUFFER WRAPPER2(int, setbuffer, FILE* stream, char *buf, size_t sz) { return __mfwrap_setvbuf (stream, buf, buf ? _IOFBF : _IONBF, sz); } #endif #ifdef HAVE_SETLINEBUF WRAPPER2(int, setlinebuf, FILE* stream) { return __mfwrap_setvbuf(stream, NULL, _IOLBF, 0); } #endif WRAPPER2(FILE *, fdopen, int fd, const char *mode) { size_t n; FILE *p; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (mode); MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "fdopen mode"); p = fdopen (fd, mode); if (NULL != p) { #ifdef MF_REGISTER_fopen __mf_register (p, sizeof (*p), MF_REGISTER_fopen, "fdopen result"); #endif MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "fdopen result"); mkbuffer (p); } return p; } WRAPPER2(FILE *, freopen, const char *path, const char *mode, FILE *s) { size_t n; FILE *p; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen path"); MF_VALIDATE_EXTENT (s, (sizeof (*s)), __MF_CHECK_WRITE, "freopen stream"); unmkbuffer (s); n = strlen (mode); MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen mode"); p = freopen (path, mode, s); if (NULL != p) { #ifdef MF_REGISTER_fopen __mf_register (p, sizeof (*p), MF_REGISTER_fopen, "freopen result"); #endif MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "freopen result"); mkbuffer (p); } 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"); mkbuffer (p); } return p; } #endif #ifdef HAVE_FREOPEN64 WRAPPER2(FILE *, freopen64, const char *path, const char *mode, FILE *s) { size_t n; FILE *p; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen64 path"); MF_VALIDATE_EXTENT (s, (sizeof (*s)), __MF_CHECK_WRITE, "freopen64 stream"); unmkbuffer (s); n = strlen (mode); MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen64 mode"); p = freopen (path, mode, s); if (NULL != p) { #ifdef MF_REGISTER_fopen __mf_register (p, sizeof (*p), MF_REGISTER_fopen, "freopen64 result"); #endif MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "freopen64 result"); mkbuffer (p); } 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 unmkbuffer (stream); 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__); if (stream != NULL) 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); } WRAPPER2(int , stat, const char *path, struct stat *buf) { size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "stat path"); MF_VALIDATE_EXTENT (buf, sizeof (*buf), __MF_CHECK_READ, "stat buf"); return stat (path, buf); } #ifdef HAVE_STAT64 WRAPPER2(int , stat64, const char *path, struct stat64 *buf) { size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "stat64 path"); MF_VALIDATE_EXTENT (buf, sizeof (*buf), __MF_CHECK_READ, "stat64 buf"); return stat64 (path, buf); } #endif WRAPPER2(int , fstat, int filedes, struct stat *buf) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (buf, sizeof (*buf), __MF_CHECK_READ, "fstat buf"); return fstat (filedes, buf); } WRAPPER2(int , lstat, const char *path, struct stat *buf) { size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "lstat path"); MF_VALIDATE_EXTENT (buf, sizeof (*buf), __MF_CHECK_READ, "lstat buf"); return lstat (path, buf); } WRAPPER2(int , mkfifo, const char *path, mode_t mode) { size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "mkfifo path"); return mkfifo (path, mode); } #ifdef HAVE_DIRENT_H WRAPPER2(DIR *, opendir, const char *path) { DIR *p; size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "opendir path"); p = opendir (path); if (NULL != p) { #ifdef MF_REGISTER_opendir __mf_register (p, MF_RESULT_SIZE_opendir, MF_REGISTER_opendir, "opendir result"); #endif MF_VALIDATE_EXTENT (p, MF_RESULT_SIZE_opendir, __MF_CHECK_WRITE, "opendir result"); } return p; } WRAPPER2(int, closedir, DIR *dir) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (dir, 0, __MF_CHECK_WRITE, "closedir dir"); #ifdef MF_REGISTER_opendir __mf_unregister (dir, MF_RESULT_SIZE_opendir, MF_REGISTER_opendir); #endif return closedir (dir); } WRAPPER2(struct dirent *, readdir, DIR *dir) { struct dirent *p; TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (dir, 0, __MF_CHECK_READ, "readdir dir"); p = readdir (dir); if (NULL != p) { #ifdef MF_REGISTER_readdir __mf_register (p, sizeof (*p), MF_REGISTER_readdir, "readdir result"); #endif MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "readdir result"); } return p; } #endif #ifdef HAVE_SYS_SOCKET_H WRAPPER2(int, recv, int s, void *buf, size_t len, int flags) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (buf, len, __MF_CHECK_WRITE, "recv buf"); return recv (s, buf, len, flags); } WRAPPER2(int, recvfrom, int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (buf, len, __MF_CHECK_WRITE, "recvfrom buf"); MF_VALIDATE_EXTENT (from, (size_t)*fromlen, __MF_CHECK_WRITE, "recvfrom from"); return recvfrom (s, buf, len, flags, from, fromlen); } WRAPPER2(int, recvmsg, int s, struct msghdr *msg, int flags) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (msg, sizeof (*msg), __MF_CHECK_WRITE, "recvmsg msg"); return recvmsg (s, msg, flags); } WRAPPER2(int, send, int s, const void *msg, size_t len, int flags) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (msg, len, __MF_CHECK_READ, "send msg"); return send (s, msg, len, flags); } WRAPPER2(int, sendto, int s, const void *msg, size_t len, int flags, const struct sockaddr *to, socklen_t tolen) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (msg, len, __MF_CHECK_READ, "sendto msg"); MF_VALIDATE_EXTENT (to, (size_t)tolen, __MF_CHECK_WRITE, "sendto to"); return sendto (s, msg, len, flags, to, tolen); } WRAPPER2(int, sendmsg, int s, const void *msg, int flags) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (msg, sizeof (*msg), __MF_CHECK_READ, "sendmsg msg"); return sendmsg (s, msg, flags); } WRAPPER2(int, setsockopt, int s, int level, int optname, const void *optval, socklen_t optlen) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (optval, (size_t)optlen, __MF_CHECK_READ, "setsockopt optval"); return setsockopt (s, level, optname, optval, optlen); } WRAPPER2(int, getsockopt, int s, int level, int optname, void *optval, socklen_t *optlen) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (optval, (size_t)*optlen, __MF_CHECK_WRITE, "getsockopt optval"); return getsockopt (s, level, optname, optval, optlen); } WRAPPER2(int, accept, int s, struct sockaddr *addr, socklen_t *addrlen) { TRACE ("%s\n", __PRETTY_FUNCTION__); if (addr != NULL) MF_VALIDATE_EXTENT (addr, (size_t)*addrlen, __MF_CHECK_WRITE, "accept addr"); return accept (s, addr, addrlen); } WRAPPER2(int, bind, int sockfd, struct sockaddr *addr, socklen_t addrlen) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (addr, (size_t)addrlen, __MF_CHECK_WRITE, "bind addr"); return bind (sockfd, addr, addrlen); } WRAPPER2(int, connect, int sockfd, const struct sockaddr *addr, socklen_t addrlen) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (addr, (size_t)addrlen, __MF_CHECK_READ, "connect addr"); return connect (sockfd, addr, addrlen); } #endif /* HAVE_SYS_SOCKET_H */ WRAPPER2(int, gethostname, char *name, size_t len) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (name, len, __MF_CHECK_WRITE, "gethostname name"); return gethostname (name, len); } #ifdef HAVE_SETHOSTNAME WRAPPER2(int, sethostname, const char *name, size_t len) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (name, len, __MF_CHECK_READ, "sethostname name"); return sethostname (name, len); } #endif #ifdef HAVE_NETDB_H WRAPPER2(struct hostent *, gethostbyname, const char *name) { struct hostent *p; char **ss; char *s; size_t n; int nreg; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (name); MF_VALIDATE_EXTENT (name, CLAMPADD(n, 1), __MF_CHECK_READ, "gethostbyname name"); p = gethostbyname (name); if (NULL != p) { #ifdef MF_REGISTER_gethostbyname __mf_register (p, sizeof (*p), MF_REGISTER_gethostbyname, "gethostbyname result"); #endif MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "gethostbyname result"); if (NULL != (s = p->h_name)) { n = strlen (s); n = CLAMPADD(n, 1); #ifdef MF_REGISTER_gethostbyname_items __mf_register (s, n, MF_REGISTER_gethostbyname_items, "gethostbyname result->h_name"); #endif MF_VALIDATE_EXTENT (s, n, __MF_CHECK_WRITE, "gethostbyname result->h_name"); } if (NULL != (ss = p->h_aliases)) { for (nreg = 1;; ++nreg) { s = *ss++; if (NULL == s) break; n = strlen (s); n = CLAMPADD(n, 1); #ifdef MF_REGISTER_gethostbyname_items __mf_register (s, n, MF_REGISTER_gethostbyname_items, "gethostbyname result->h_aliases[]"); #endif MF_VALIDATE_EXTENT (s, n, __MF_CHECK_WRITE, "gethostbyname result->h_aliases[]"); } nreg *= sizeof (*p->h_aliases); #ifdef MF_REGISTER_gethostbyname_items __mf_register (p->h_aliases, nreg, MF_REGISTER_gethostbyname_items, "gethostbyname result->h_aliases"); #endif MF_VALIDATE_EXTENT (p->h_aliases, nreg, __MF_CHECK_WRITE, "gethostbyname result->h_aliases"); } if (NULL != (ss = p->h_addr_list)) { for (nreg = 1;; ++nreg) { s = *ss++; if (NULL == s) break; #ifdef MF_REGISTER_gethostbyname_items __mf_register (s, p->h_length, MF_REGISTER_gethostbyname_items, "gethostbyname result->h_addr_list[]"); #endif MF_VALIDATE_EXTENT (s, p->h_length, __MF_CHECK_WRITE, "gethostbyname result->h_addr_list[]"); } nreg *= sizeof (*p->h_addr_list); #ifdef MF_REGISTER_gethostbyname_items __mf_register (p->h_addr_list, nreg, MF_REGISTER_gethostbyname_items, "gethostbyname result->h_addr_list"); #endif MF_VALIDATE_EXTENT (p->h_addr_list, nreg, __MF_CHECK_WRITE, "gethostbyname result->h_addr_list"); } } return p; } #endif /* HAVE_NETDB_H */ #ifdef HAVE_SYS_WAIT_H WRAPPER2(pid_t, wait, int *status) { TRACE ("%s\n", __PRETTY_FUNCTION__); if (NULL != status) MF_VALIDATE_EXTENT (status, sizeof (*status), __MF_CHECK_WRITE, "wait status"); return wait (status); } WRAPPER2(pid_t, waitpid, pid_t pid, int *status, int options) { TRACE ("%s\n", __PRETTY_FUNCTION__); if (NULL != status) MF_VALIDATE_EXTENT (status, sizeof (*status), __MF_CHECK_WRITE, "waitpid status"); return waitpid (pid, status, options); } #endif /* HAVE_SYS_WAIT_H */ WRAPPER2(FILE *, popen, const char *command, const char *mode) { size_t n; FILE *p; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (command); MF_VALIDATE_EXTENT (command, CLAMPADD(n, 1), __MF_CHECK_READ, "popen path"); n = strlen (mode); MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "popen mode"); p = popen (command, mode); if (NULL != p) { #ifdef MF_REGISTER_fopen __mf_register (p, sizeof (*p), MF_REGISTER_fopen, "popen result"); #endif MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "popen result"); } return p; } WRAPPER2(int, pclose, FILE *stream) { int resp; TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE, "pclose stream"); resp = pclose (stream); #ifdef MF_REGISTER_fopen __mf_unregister (stream, sizeof (*stream), MF_REGISTER_fopen); #endif return resp; } WRAPPER2(int, execve, const char *path, char *const argv [], char *const envp[]) { size_t n; char *const *p; const char *s; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "execve path"); for (p = argv;;) { MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_READ, "execve *argv"); s = *p++; if (NULL == s) break; n = strlen (s); MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_READ, "execve **argv"); } for (p = envp;;) { MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_READ, "execve *envp"); s = *p++; if (NULL == s) break; n = strlen (s); MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_READ, "execve **envp"); } return execve (path, argv, envp); } WRAPPER2(int, execv, const char *path, char *const argv []) { size_t n; char *const *p; const char *s; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "execv path"); for (p = argv;;) { MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_READ, "execv *argv"); s = *p++; if (NULL == s) break; n = strlen (s); MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_READ, "execv **argv"); } return execv (path, argv); } WRAPPER2(int, execvp, const char *path, char *const argv []) { size_t n; char *const *p; const char *s; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "execvp path"); for (p = argv;;) { MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_READ, "execvp *argv"); s = *p++; if (NULL == s) break; n = strlen (s); MF_VALIDATE_EXTENT (s, CLAMPADD(n, 1), __MF_CHECK_READ, "execvp **argv"); } return execvp (path, argv); } WRAPPER2(int, system, const char *string) { size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (string); MF_VALIDATE_EXTENT (string, CLAMPADD(n, 1), __MF_CHECK_READ, "system string"); return system (string); } WRAPPER2(void *, dlopen, const char *path, int flags) { void *p; size_t n; TRACE ("%s\n", __PRETTY_FUNCTION__); n = strlen (path); MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "dlopen path"); p = dlopen (path, flags); if (NULL != p) { #ifdef MF_REGISTER_dlopen __mf_register (p, 0, MF_REGISTER_dlopen, "dlopen result"); #endif MF_VALIDATE_EXTENT (p, 0, __MF_CHECK_WRITE, "dlopen result"); } return p; } WRAPPER2(int, dlclose, void *handle) { int resp; TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (handle, 0, __MF_CHECK_READ, "dlclose handle"); resp = dlclose (handle); #ifdef MF_REGISTER_dlopen __mf_unregister (handle, 0, MF_REGISTER_dlopen); #endif return resp; } WRAPPER2(char *, dlerror) { char *p; TRACE ("%s\n", __PRETTY_FUNCTION__); p = dlerror (); if (NULL != p) { size_t n; n = strlen (p); n = CLAMPADD(n, 1); #ifdef MF_REGISTER_dlerror __mf_register (p, n, MF_REGISTER_dlerror, "dlerror result"); #endif MF_VALIDATE_EXTENT (p, n, __MF_CHECK_WRITE, "dlerror result"); } return p; } WRAPPER2(void *, dlsym, void *handle, char *symbol) { size_t n; void *p; TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (handle, 0, __MF_CHECK_READ, "dlsym handle"); n = strlen (symbol); MF_VALIDATE_EXTENT (symbol, CLAMPADD(n, 1), __MF_CHECK_READ, "dlsym symbol"); p = dlsym (handle, symbol); if (NULL != p) { #ifdef MF_REGISTER_dlsym __mf_register (p, 0, MF_REGISTER_dlsym, "dlsym result"); #endif MF_VALIDATE_EXTENT (p, 0, __MF_CHECK_WRITE, "dlsym result"); } return p; } #if defined (HAVE_SYS_IPC_H) && defined (HAVE_SYS_SEM_H) && defined (HAVE_SYS_SHM_H) WRAPPER2(int, semop, int semid, struct sembuf *sops, unsigned nsops) { TRACE ("%s\n", __PRETTY_FUNCTION__); MF_VALIDATE_EXTENT (sops, sizeof (*sops) * nsops, __MF_CHECK_READ, "semop sops"); return semop (semid, sops, nsops); } #ifndef HAVE_UNION_SEMUN union semun { int val; /* value for SETVAL */ struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */ unsigned short int *array; /* array for GETALL, SETALL */ struct seminfo *__buf; /* buffer for IPC_INFO */ }; #endif WRAPPER2(int, semctl, int semid, int semnum, int cmd, union semun arg) { TRACE ("%s\n", __PRETTY_FUNCTION__); switch (cmd) { case IPC_STAT: MF_VALIDATE_EXTENT (arg.buf, sizeof (*arg.buf), __MF_CHECK_WRITE, "semctl buf"); break; case IPC_SET: MF_VALIDATE_EXTENT (arg.buf, sizeof (*arg.buf), __MF_CHECK_READ, "semctl buf"); break; case GETALL: MF_VALIDATE_EXTENT (arg.array, sizeof (*arg.array), __MF_CHECK_WRITE, "semctl array"); case SETALL: MF_VALIDATE_EXTENT (arg.array, sizeof (*arg.array), __MF_CHECK_READ, "semctl array"); break; #ifdef IPC_INFO /* FreeBSD 5.1 And Cygwin headers include IPC_INFO but not the __buf field. */ #if !defined(__FreeBSD__) && !defined(__CYGWIN__) case IPC_INFO: MF_VALIDATE_EXTENT (arg.__buf, sizeof (*arg.__buf), __MF_CHECK_WRITE, "semctl __buf"); break; #endif #endif default: break; } return semctl (semid, semnum, cmd, arg); } WRAPPER2(int, shmctl, int shmid, int cmd, struct shmid_ds *buf) { TRACE ("%s\n", __PRETTY_FUNCTION__); switch (cmd) { case IPC_STAT: MF_VALIDATE_EXTENT (buf, sizeof (*buf), __MF_CHECK_WRITE, "shmctl buf"); break; case IPC_SET: MF_VALIDATE_EXTENT (buf, sizeof (*buf), __MF_CHECK_READ, "shmctl buf"); break; default: break; } return shmctl (shmid, cmd, buf); } WRAPPER2(void *, shmat, int shmid, const void *shmaddr, int shmflg) { void *p; TRACE ("%s\n", __PRETTY_FUNCTION__); p = shmat (shmid, shmaddr, shmflg); #ifdef MF_REGISTER_shmat if (NULL != p) { struct shmid_ds buf; __mf_register (p, shmctl (shmid, IPC_STAT, &buf) ? 0 : buf.shm_segsz, MF_REGISTER_shmat, "shmat result"); } #endif return p; } WRAPPER2(int, shmdt, const void *shmaddr) { int resp; TRACE ("%s\n", __PRETTY_FUNCTION__); resp = shmdt (shmaddr); #ifdef MF_REGISTER_shmat __mf_unregister ((void *)shmaddr, 0, MF_REGISTER_shmat); #endif return resp; } #endif /* HAVE_SYS_IPC/SEM/SHM_H */ /* ctype stuff. This is host-specific by necessity, as the arrays that is used by most is*()/to*() macros are implementation-defined. */ /* GLIBC 2.3 */ #ifdef HAVE___CTYPE_B_LOC WRAPPER2(unsigned short **, __ctype_b_loc, void) { static unsigned short * last_buf = (void *) 0; static unsigned short ** last_ptr = (void *) 0; unsigned short ** ptr = (unsigned short **) __ctype_b_loc (); unsigned short * buf = * ptr; if (ptr != last_ptr) { /* XXX: unregister last_ptr? */ last_ptr = ptr; __mf_register (last_ptr, sizeof(last_ptr), __MF_TYPE_STATIC, "ctype_b_loc **"); } if (buf != last_buf) { last_buf = buf; __mf_register ((void *) (last_buf - 128), 384 * sizeof(unsigned short), __MF_TYPE_STATIC, "ctype_b_loc []"); } return ptr; } #endif #ifdef HAVE___CTYPE_TOUPPER_LOC WRAPPER2(int **, __ctype_toupper_loc, void) { static int * last_buf = (void *) 0; static int ** last_ptr = (void *) 0; int ** ptr = (int **) __ctype_toupper_loc (); int * buf = * ptr; if (ptr != last_ptr) { /* XXX: unregister last_ptr? */ last_ptr = ptr; __mf_register (last_ptr, sizeof(last_ptr), __MF_TYPE_STATIC, "ctype_toupper_loc **"); } if (buf != last_buf) { last_buf = buf; __mf_register ((void *) (last_buf - 128), 384 * sizeof(int), __MF_TYPE_STATIC, "ctype_toupper_loc []"); } return ptr; } #endif #ifdef HAVE___CTYPE_TOLOWER_LOC WRAPPER2(int **, __ctype_tolower_loc, void) { static int * last_buf = (void *) 0; static int ** last_ptr = (void *) 0; int ** ptr = (int **) __ctype_tolower_loc (); int * buf = * ptr; if (ptr != last_ptr) { /* XXX: unregister last_ptr? */ last_ptr = ptr; __mf_register (last_ptr, sizeof(last_ptr), __MF_TYPE_STATIC, "ctype_tolower_loc **"); } if (buf != last_buf) { last_buf = buf; __mf_register ((void *) (last_buf - 128), 384 * sizeof(int), __MF_TYPE_STATIC, "ctype_tolower_loc []"); } return ptr; } #endif /* passwd/group related functions. These register every (static) pointer value returned, and rely on libmudflap's quiet toleration of duplicate static registrations. */ #ifdef HAVE_GETLOGIN WRAPPER2(char *, getlogin, void) { char *buf = getlogin (); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getlogin() return"); return buf; } #endif #ifdef HAVE_CUSERID WRAPPER2(char *, cuserid, char * buf) { if (buf != NULL) { MF_VALIDATE_EXTENT(buf, L_cuserid, __MF_CHECK_WRITE, "cuserid destination"); return cuserid (buf); } buf = cuserid (NULL); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getcuserid() return"); return buf; } #endif #ifdef HAVE_GETPWNAM WRAPPER2(struct passwd *, getpwnam, const char *name) { struct passwd *buf; MF_VALIDATE_EXTENT(name, strlen(name)+1, __MF_CHECK_READ, "getpwnam name"); buf = getpwnam (name); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getpw*() return"); return buf; } #endif #ifdef HAVE_GETPWUID WRAPPER2(struct passwd *, getpwuid, uid_t uid) { struct passwd *buf; buf = getpwuid (uid); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getpw*() return"); return buf; } #endif #ifdef HAVE_GETGRNAM WRAPPER2(struct group *, getgrnam, const char *name) { struct group *buf; MF_VALIDATE_EXTENT(name, strlen(name)+1, __MF_CHECK_READ, "getgrnam name"); buf = getgrnam (name); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getgr*() return"); return buf; } #endif #ifdef HAVE_GETGRGID WRAPPER2(struct group *, getgrgid, uid_t uid) { struct group *buf; buf = getgrgid (uid); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getgr*() return"); return buf; } #endif #ifdef HAVE_GETSERVENT WRAPPER2(struct servent *, getservent, void) { struct servent *buf; buf = getservent (); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getserv*() return"); return buf; } #endif #ifdef HAVE_GETSERVBYNAME WRAPPER2(struct servent *, getservbyname, const char *name, const char *proto) { struct servent *buf; MF_VALIDATE_EXTENT(name, strlen(name)+1, __MF_CHECK_READ, "getservbyname name"); MF_VALIDATE_EXTENT(proto, strlen(proto)+1, __MF_CHECK_READ, "getservbyname proto"); buf = getservbyname (name, proto); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getserv*() return"); return buf; } #endif #ifdef HAVE_GETSERVBYPORT WRAPPER2(struct servent *, getservbyport, int port, const char *proto) { struct servent *buf; MF_VALIDATE_EXTENT(proto, strlen(proto)+1, __MF_CHECK_READ, "getservbyport proto"); buf = getservbyport (port, proto); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getserv*() return"); return buf; } #endif #ifdef HAVE_GAI_STRERROR WRAPPER2(const char *, gai_strerror, int errcode) { const char *buf; buf = gai_strerror (errcode); if (buf != NULL) __mf_register ((void *) buf, strlen(buf)+1, __MF_TYPE_STATIC, "gai_strerror() return"); return buf; } #endif #ifdef HAVE_GETMNTENT WRAPPER2(struct mntent *, getmntent, FILE *filep) { struct mntent *m; static struct mntent *last = NULL; MF_VALIDATE_EXTENT (filep, sizeof (*filep), __MF_CHECK_WRITE, "getmntent stream"); #define UR(field) __mf_unregister(last->field, strlen (last->field)+1, __MF_TYPE_STATIC) if (last) { UR (mnt_fsname); UR (mnt_dir); UR (mnt_type); UR (mnt_opts); __mf_unregister (last, sizeof (*last), __MF_TYPE_STATIC); } #undef UR m = getmntent (filep); last = m; #define R(field) __mf_register(last->field, strlen (last->field)+1, __MF_TYPE_STATIC, "mntent " #field) if (m) { R (mnt_fsname); R (mnt_dir); R (mnt_type); R (mnt_opts); __mf_register (last, sizeof (*last), __MF_TYPE_STATIC, "getmntent result"); } #undef R return m; } #endif #ifdef HAVE_INET_NTOA WRAPPER2(char *, inet_ntoa, struct in_addr in) { static char *last_buf = NULL; char *buf; if (last_buf) __mf_unregister (last_buf, strlen (last_buf)+1, __MF_TYPE_STATIC); buf = inet_ntoa (in); last_buf = buf; if (buf) __mf_register (last_buf, strlen (last_buf)+1, __MF_TYPE_STATIC, "inet_ntoa result"); return buf; } #endif #ifdef HAVE_GETPROTOENT WRAPPER2(struct protoent *, getprotoent, void) { struct protoent *buf; buf = getprotoent (); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getproto*() return"); return buf; } #endif #ifdef HAVE_GETPROTOBYNAME WRAPPER2(struct protoent *, getprotobyname, const char *name) { struct protoent *buf; MF_VALIDATE_EXTENT(name, strlen(name)+1, __MF_CHECK_READ, "getprotobyname name"); buf = getprotobyname (name); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getproto*() return"); return buf; } #endif #ifdef HAVE_GETPROTOBYNUMBER WRAPPER2(struct protoent *, getprotobynumber, int port) { struct protoent *buf; buf = getprotobynumber (port); if (buf != NULL) __mf_register (buf, sizeof(*buf), __MF_TYPE_STATIC, "getproto*() return"); return buf; } #endif
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