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/******************************************************/
/* tpax: a topological pax implementation */
/* Copyright (C) 2020 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
/******************************************************/
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <tpax/tpax.h>
#include "tpax_driver_impl.h"
#include "tpax_errinfo_impl.h"
static int tpax_free_unit_ctx_impl(struct tpax_unit_ctx_impl * ctx, int ret)
{
if (ctx) {
free(ctx);
}
return ret;
}
int tpax_get_unit_ctx(
const struct tpax_driver_ctx * dctx,
const char * path,
struct tpax_unit_ctx ** pctx)
{
struct tpax_unit_ctx_impl * ctx;
if (!dctx)
return TPAX_CUSTOM_ERROR(
dctx,TPAX_ERR_NULL_CONTEXT);
else if (!(ctx = calloc(1,sizeof(*ctx))))
return TPAX_BUFFER_ERROR(dctx);
tpax_driver_set_ectx(
dctx,0,path);
ctx->path = path;
ctx->uctx.path = &ctx->path;
*pctx = &ctx->uctx;
return 0;
}
void tpax_free_unit_ctx(struct tpax_unit_ctx * ctx)
{
struct tpax_unit_ctx_impl * ictx;
uintptr_t addr;
if (ctx) {
addr = (uintptr_t)ctx - offsetof(struct tpax_unit_ctx_impl,uctx);
ictx = (struct tpax_unit_ctx_impl *)addr;
tpax_free_unit_ctx_impl(ictx,0);
}
}
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