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#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sofort/sofort.h>
#include "sofort_driver_impl.h"
static int sfrt_free_unit_ctx_impl(struct sfrt_unit_ctx_impl * ctx, int status)
{
if (ctx) {
sfrt_unmap_input(&ctx->map);
free(ctx);
}
return status;
}
int sfrt_get_unit_ctx(
const struct sfrt_driver_ctx * dctx,
const char * path,
struct sfrt_unit_ctx ** pctx)
{
struct sfrt_unit_ctx_impl * ctx;
if (!dctx || !(ctx = calloc(sizeof(*ctx),1)))
return -1;
if (sfrt_map_input(-1,path,PROT_READ,&ctx->map))
return sfrt_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 sfrt_free_unit_ctx(struct sfrt_unit_ctx * ctx)
{
struct sfrt_unit_ctx_impl * ictx;
uintptr_t addr;
if (ctx) {
addr = (uintptr_t)ctx - offsetof(struct sfrt_unit_ctx_impl,uctx);
ictx = (struct sfrt_unit_ctx_impl *)addr;
sfrt_free_unit_ctx_impl(ictx,0);
}
}
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