nightloader/libs/posix-uefi/uefi/dirent.c

77 lines
2.3 KiB
C

/*
* dirent.c
*
* Copyright (C) 2021 bzt (bztsrc@gitlab)
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* This file is part of the POSIX-UEFI package.
* @brief Implementing functions which are defined in dirent.h
*
*/
#include <uefi.h>
extern void __stdio_seterrno(efi_status_t status);
static struct dirent __dirent;
DIR *opendir (const char_t *__name)
{
DIR *dp = (DIR*)fopen(__name, CL("rd"));
if(dp) rewinddir(dp);
return dp;
}
struct dirent *readdir (DIR *__dirp)
{
efi_status_t status;
efi_file_info_t info;
uintn_t bs = sizeof(efi_file_info_t);
memset(&__dirent, 0, sizeof(struct dirent));
status = __dirp->Read(__dirp, &bs, &info);
if(EFI_ERROR(status) || !bs) {
if(EFI_ERROR(status)) __stdio_seterrno(status);
else errno = 0;
return NULL;
}
__dirent.d_type = info.Attribute & EFI_FILE_DIRECTORY ? DT_DIR : DT_REG;
#ifndef UEFI_NO_UTF8
__dirent.d_reclen = (unsigned short int)wcstombs(__dirent.d_name, info.FileName, FILENAME_MAX - 1);
#else
__dirent.d_reclen = strlen(info.FileName);
strncpy(__dirent.d_name, info.FileName, FILENAME_MAX - 1);
#endif
return &__dirent;
}
void rewinddir (DIR *__dirp)
{
if(__dirp)
__dirp->SetPosition(__dirp, 0);
}
int closedir (DIR *__dirp)
{
return fclose((FILE*)__dirp);
}