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Addition of example plugin for library call detection and counting. #79

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Addition of example plugin for library call detection and counting. #79

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8d6a132
Added new example plugin to detect library calls and list number of t…
joshualant Jul 12, 2022
6a203ac
comment out addition of plugin in make
joshualant Jul 12, 2022
2b3226b
formatting changes, indentation, commenting etc.
joshualant Jul 14, 2022
85d849d
removed malloc and free, replaced with mambo_alloc and mambo_free. ad…
joshualant Jul 14, 2022
22f5b54
Merge branch 'beehive-lab:master' into master
joshualant Sep 19, 2022
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9 changes: 9 additions & 0 deletions api/plugin_support.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
#include <assert.h>
#include <sys/mman.h>
#include <stdarg.h>
#include <string.h>

#include "../dbm.h"
#include "../common.h"
Expand Down Expand Up @@ -171,6 +172,14 @@ void *mambo_alloc(mambo_context *ctx, size_t size) {
return mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
}

void *mambo_calloc(mambo_context *ctx, size_t nitems, size_t size) {
void* ret = mmap(NULL, nitems*size, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if(ret) {
memset(ret, 0, nitems*size);
}
return ret;
}

void mambo_free(mambo_context *ctx, void *ptr) {
}

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1 change: 1 addition & 0 deletions api/plugin_support.h
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Expand Up @@ -150,6 +150,7 @@ int mambo_register_function_cb(mambo_context *ctx, char *fn_name,

/* Memory management */
void *mambo_alloc(mambo_context *ctx, size_t size);
void *mambo_calloc(mambo_context *ctx, size_t nitems, size_t size);
void mambo_free(mambo_context *ctx, void *ptr);

/* Access plugin data */
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1 change: 1 addition & 0 deletions makefile
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Expand Up @@ -9,6 +9,7 @@
#PLUGINS+=plugins/symbol_example.c
#PLUGINS+=plugins/memcheck/memcheck.S plugins/memcheck/memcheck.c plugins/memcheck/naive_stdlib.c
#PLUGINS+=plugins/follow_exec.c
#PLUGINS+=plugins/library_call_trace.c

OPTS= -DDBM_LINK_UNCOND_IMM
OPTS+=-DDBM_INLINE_UNCOND_IMM
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