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/**********************************************************/
/* apimagic: cparser-based API normalization utility */
/* Copyright (C) 2015--2016 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.APIMAGIC. */
/**********************************************************/
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <apimagic/apimagic.h>
#include "apimagic_driver_impl.h"
static int amgc_free_unit_ctx_impl(struct amgc_unit_ctx_impl * ctx, int status)
{
if (ctx) {
amgc_unmap_input(&ctx->map);
free(ctx);
}
return status;
}
int amgc_get_unit_ctx(
const struct amgc_driver_ctx * dctx,
const char * path,
struct amgc_unit_ctx ** pctx)
{
struct amgc_unit_ctx_impl * ctx;
if (!dctx || !(ctx = calloc(sizeof(*ctx),1)))
return -1;
if (amgc_map_input(-1,path,PROT_READ,&ctx->map))
return amgc_free_unit_ctx_impl(ctx,-1);
memcpy(&ctx->cctx,dctx->cctx,
sizeof(ctx->cctx));
ctx->path = path;
ctx->uctx.path = &ctx->path;
ctx->uctx.map = &ctx->map;
ctx->uctx.cctx = &ctx->cctx;
*pctx = &ctx->uctx;
return 0;
}
void amgc_free_unit_ctx(struct amgc_unit_ctx * ctx)
{
struct amgc_unit_ctx_impl * ictx;
uintptr_t addr;
if (ctx) {
addr = (uintptr_t)ctx - offsetof(struct amgc_unit_ctx_impl,uctx);
ictx = (struct amgc_unit_ctx_impl *)addr;
amgc_free_unit_ctx_impl(ictx,0);
}
}
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