DGNum/hostapd
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Add memory allocation analyzer to verify OS wrapper use

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WPA_TRACE=y builds will now verify that memory allocation in done
consistently using os_{zalloc,malloc,realloc,strdup,free} (i.e., no
mixing of os_* functions and unwrapper functions). In addition, some
common memory allocation issues (double-free, memory leaks, etc.) are
detected automatically.
This commit is contained in:
Jouni Malinen 2009-12-19 21:47:56 +02:00
parent 80d77c31ff
commit fb4baa688b
5 changed files with 174 additions and 23 deletions
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25
src/utils/os.h
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@ -1,6 +1,6 @@
/*
* wpa_supplicant/hostapd / OS specific functions
* Copyright (c) 2005-2006, Jouni Malinen <j@w1.fi>
* OS specific functions
* Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -379,6 +379,12 @@ int os_snprintf(char *str, size_t size, const char *format, ...);
#else /* OS_NO_C_LIB_DEFINES */
#ifdef WPA_TRACE
void * os_malloc(size_t size);
void * os_realloc(void *ptr, size_t size);
void os_free(void *ptr);
char * os_strdup(const char *s);
#else /* WPA_TRACE */
#ifndef os_malloc
#define os_malloc(s) malloc((s))
#endif
@ -388,6 +394,14 @@ int os_snprintf(char *str, size_t size, const char *format, ...);
#ifndef os_free
#define os_free(p) free((p))
#endif
#ifndef os_strdup
#ifdef _MSC_VER
#define os_strdup(s) _strdup(s)
#else
#define os_strdup(s) strdup(s)
#endif
#endif
#endif /* WPA_TRACE */
#ifndef os_memcpy
#define os_memcpy(d, s, n) memcpy((d), (s), (n))
@ -402,13 +416,6 @@ int os_snprintf(char *str, size_t size, const char *format, ...);
#define os_memcmp(s1, s2, n) memcmp((s1), (s2), (n))
#endif
#ifndef os_strdup
#ifdef _MSC_VER
#define os_strdup(s) _strdup(s)
#else
#define os_strdup(s) strdup(s)
#endif
#endif
#ifndef os_strlen
#define os_strlen(s) strlen(s)
#endif