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libzmalloc-0.1/000075500000000000000000000000001062502642200134775ustar00rootroot00000000000000libzmalloc-0.1/Makefile000064400000000000000000000015721062502642200151440ustar00rootroot00000000000000LIBRARY = libzmalloc
VERSION=0.1
MAJOR = 0

SHAREDLIB = $(LIBRARY).so
SONAME = $(SHAREDLIB).$(MAJOR)

INSTALL = install

LIBDIR = $(libdir)

CC=gcc
CFLAGS =$(FLAGS) -I../include $(RPM_OPT_FLAGS)
LINK.o = $(CC) $(LDFLAGS) $(FLAGS) $(TARGET_ARCH)

LIB_SRC = zmalloc.c

LIB_SOBJ = $(LIB_SRC:%.c=%.so)

.PHONY: all install clean

all: $(SHAREDLIB)

install: all
	$(INSTALL) -pD -m755 $(SHAREDLIB) $(libdir)/$(SHAREDLIB).$(VERSION)
	@ln -sf $(SHAREDLIB).$(VERSION) $(libdir)/$(SONAME)
	@ln -sf $(SONAME) $(libdir)/$(SHAREDLIB)
	$(INSTALL) -pD -m755 zmalloc-enable $(bindir)/zmalloc-enable
	$(INSTALL) -pD -m755 zmalloc-disable $(bindir)/zmalloc-disable

clean:
	$(RM) $(LIB_SOBJ) $(SHAREDLIB) $(SONAME) core *~ test

$(SHAREDLIB): $(LIB_SOBJ)
	$(LINK.o) -shared -Wl,-soname,$(SONAME)  $+ $(OUTPUT_OPTION)
	ln -sf $(SHAREDLIB) $(SONAME)

%.so: %.c
	$(CC) -c $(CPPFLAGS) -fpic $< $(OUTPUT_OPTION)
libzmalloc-0.1/test1.c000064400000000000000000000005731062502642200147100ustar00rootroot00000000000000#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define SIZE 100

print_memory(char *c,int size)
{
    int i;
    for(i=0;i<size;i++){
        printf(" %.2x",*(c+i));
	if ((i+1) % 20 == 0) puts("");
    }
    puts("");
}

int main(void)
{
    char *l=(char*)malloc(SIZE);

    if (l)
	print_memory(l,SIZE);
    else
	puts("unable to malloc memory");

    return 0;
}
libzmalloc-0.1/test2.c000064400000000000000000000010111062502642200146750ustar00rootroot00000000000000#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define SIZE 100

print_memory(char *c,int size)
{
    int i;
    for(i=0;i<size;i++){
        printf(" %.2x",*(c+i));
	if ((i+1) % 20 == 0) puts("");
    }
    puts("");
}


int main()
{
    char *c;

    c=malloc(SIZE*sizeof(char));
    memset(c,0x33,SIZE*sizeof(char));
    puts("old memory content:");
    print_memory(c,SIZE);

    free(c);
    c=malloc(SIZE*sizeof(char));

    puts("new memory content:");
    print_memory(c,SIZE);    

    return 0;
}

libzmalloc-0.1/zmalloc-disable000075500000000000000000000001271062502642200164670ustar00rootroot00000000000000#!/bin/sh

sed '\,^/lib/libzmalloc.so.0.1$, d' -i /etc/ld.so.preload && /sbin/ldconfig
libzmalloc-0.1/zmalloc-enable000075500000000000000000000002371062502642200163140ustar00rootroot00000000000000#!/bin/sh

if ! grep -qs '^/lib/libzmalloc\.so\.0.1$' /etc/ld.so.preload; then
    echo '/lib/libzmalloc.so.0.1' >>/etc/ld.so.preload &&
    /sbin/ldconfig
fi
libzmalloc-0.1/zmalloc.c000064400000000000000000000002631062502642200153050ustar00rootroot00000000000000#define _GNU_SOURCE	1
#include <stdio.h>
#include <dlfcn.h>
#include <stdlib.h>
 
void *malloc(size_t size){
    return calloc(1,size);
}

void free(void *ptr){
    cfree(ptr);
}