| #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" |
| #include "sofort_errinfo_impl.h" |
| |
| static int sfrt_free_unit_ctx_impl(struct sfrt_unit_ctx_impl * ctx, int ret) |
| { |
| if (ctx) { |
| sfrt_unmap_input(&ctx->map); |
| free(ctx); |
| } |
| |
| return ret; |
| } |
| |
| 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) |
| return SFRT_CUSTOM_ERROR( |
| dctx,SFRT_ERR_NULL_CONTEXT); |
| |
| else if (!(ctx = calloc(1,sizeof(*ctx)))) |
| return SFRT_BUFFER_ERROR(dctx); |
| |
| sfrt_driver_set_ectx( |
| dctx,0,path); |
| |
| if (sfrt_map_input(dctx,-1,path,PROT_READ,&ctx->map)) |
| return sfrt_free_unit_ctx_impl(ctx, |
| SFRT_NESTED_ERROR(dctx)); |
| |
| ctx->path = path; |
| |
| ctx->uctx.path = &ctx->path; |
| ctx->uctx.map = &ctx->map; |
| |
| *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); |
| } |
| } |