From a7c63916dcd5b63b7965174af87d0edb55bd6194 Mon Sep 17 00:00:00 2001 From: midipix Date: Fri, 30 May 2025 23:37:19 +0000 Subject: library api: _raw_ (raw image api) namespace overhaul. --- src/logic/pe_image_raw_data.c | 66 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/logic/pe_image_raw_data.c (limited to 'src/logic/pe_image_raw_data.c') diff --git a/src/logic/pe_image_raw_data.c b/src/logic/pe_image_raw_data.c new file mode 100644 index 0000000..7ab6da6 --- /dev/null +++ b/src/logic/pe_image_raw_data.c @@ -0,0 +1,66 @@ +/***************************************************************/ +/* perk: PE Resource Kit */ +/* Copyright (C) 2015--2021 SysDeer Technologies, LLC */ +/* Released under GPLv2 and GPLv3; see COPYING.PERK. */ +/***************************************************************/ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include "perk_driver_impl.h" +#include "perk_errinfo_impl.h" + +int pe_raw_map_raw_image( + const struct pe_driver_ctx * dctx, + int fd, + const char * path, + int prot, + struct pe_raw_image * map) +{ + int ret; + struct stat st; + bool fnew; + int fdcwd; + + fdcwd = pe_driver_fdcwd(dctx); + + if ((fnew = (fd < 0))) + fd = openat(fdcwd,path,O_RDONLY | O_CLOEXEC); + + if (fd < 0) + return PERK_SYSTEM_ERROR(dctx); + + if ((ret = fstat(fd,&st) < 0) && fnew) + close(fd); + + else if ((st.st_size == 0) && fnew) + close(fd); + + if (ret < 0) + return PERK_SYSTEM_ERROR(dctx); + + else if (st.st_size == 0) + return PERK_CUSTOM_ERROR( + dctx,PERK_ERR_IMAGE_SIZE_ZERO); + + map->map_size = st.st_size; + map->map_addr = mmap(0,map->map_size,prot,MAP_PRIVATE,fd,0); + + if (fnew) + close(fd); + + return (map->map_addr == MAP_FAILED) + ? PERK_SYSTEM_ERROR(dctx) + : 0; +} + +int pe_raw_unmap_raw_image(struct pe_raw_image * map) +{ + return munmap(map->map_addr,map->map_size); +} -- cgit v1.2.3