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add new models and the v3 report #8

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add new models and the v3 report #8

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54 changes: 54 additions & 0 deletions infer/models/kernel.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,54 @@
#include "infer_builtins.h"

#include <stdlib.h>

typedef unsigned gfp_t;

#define SIZE_MAX (~(size_t)0)

void* kmalloc(size_t size, gfp_t flags) {
if (size == 0)
return NULL;
void* res = malloc(size);
INFER_EXCLUDE_CONDITION(!res);
return res;
}

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

void do_exit(long error_code) { exit(0); }

void* kcalloc(size_t n, size_t size, gfp_t flags) {
if (size != 0 && n > SIZE_MAX / size)
return NULL;

void* res = malloc(n * size);
INFER_EXCLUDE_CONDITION(!res);
return res;
}

void *kzalloc(size_t size, gfp_t flags) {
if (size == 0)
return NULL;
void* res = malloc(size);
INFER_EXCLUDE_CONDITION(!res);
return res;
}

void* vmalloc(unsigned long size) {
if (size == 0)
return NULL;
void* res = malloc(size);
INFER_EXCLUDE_CONDITION(!res);
return res;
}

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

//similar to strlen model
size_t ksize(const void* obj) {
int size;
__require_allocated_array(obj);
size = __get_array_length(obj);
return size - 1;
}
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