diff options
Diffstat (limited to 'StdLib/LibC/Uefi/Devices/UefiShell/daShell.c')
| -rw-r--r-- | StdLib/LibC/Uefi/Devices/UefiShell/daShell.c | 650 |
1 files changed, 650 insertions, 0 deletions
diff --git a/StdLib/LibC/Uefi/Devices/UefiShell/daShell.c b/StdLib/LibC/Uefi/Devices/UefiShell/daShell.c new file mode 100644 index 0000000000..37870e8384 --- /dev/null +++ b/StdLib/LibC/Uefi/Devices/UefiShell/daShell.c @@ -0,0 +1,650 @@ +/** @file
+ Abstract device driver for the UEFI Shell-hosted environment.
+
+ In a Shell-hosted environment, this is the driver that is called
+ when no other driver matches.
+
+ Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials are licensed and made available under
+ the terms and conditions of the BSD License that accompanies this distribution.
+ The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+#include <Uefi.h>
+#include <Library/BaseLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/ShellLib.h>
+
+#include <LibConfig.h>
+#include <sys/EfiSysCall.h>
+
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <wctype.h>
+#include <wchar.h>
+#include <sys/fcntl.h>
+#include <kfile.h>
+#include <Device/Device.h>
+#include <MainData.h>
+#include <Efi/SysEfi.h>
+
+static
+int
+EFIAPI
+da_ShellClose(
+ IN struct __filedes *Fp
+)
+{
+ EFIerrno = ShellCloseFile( (SHELL_FILE_HANDLE *)&Fp->devdata);
+ if(RETURN_ERROR(EFIerrno)) {
+ return -1;
+ }
+ return 0;
+}
+
+static
+int
+EFIAPI
+da_ShellDelete(
+ struct __filedes *filp
+ )
+{
+ RETURN_STATUS Status;
+
+ Status = ShellDeleteFile( (SHELL_FILE_HANDLE *)&filp->devdata);
+ if(Status != RETURN_SUCCESS) {
+ errno = EFI2errno(Status);
+ EFIerrno = Status;
+ return -1;
+ }
+ return 0;
+}
+
+static
+off_t
+EFIAPI
+da_ShellSeek(
+ struct __filedes *filp,
+ off_t offset,
+ int whence
+)
+{
+ __off_t CurPos = -1;
+ RETURN_STATUS Status = RETURN_SUCCESS;
+ SHELL_FILE_HANDLE FileHandle;
+
+ FileHandle = (SHELL_FILE_HANDLE)filp->devdata;
+
+ if(whence != SEEK_SET) {
+ // We are doing a relative seek
+ if(whence == SEEK_END) {
+ // seeking relative to EOF, so position there first.
+ Status = ShellSetFilePosition( FileHandle, 0xFFFFFFFFFFFFFFFFULL);
+ }
+ if(Status == RETURN_SUCCESS) {
+ // Now, determine our current position.
+ Status = ShellGetFilePosition( FileHandle, (UINT64 *)&CurPos);
+ }
+ }
+ else {
+ CurPos = 0; // offset is an absolute position for SEEK_SET
+ if(offset < 0) {
+ Status = RETURN_INVALID_PARAMETER;
+ }
+ }
+ if(Status == RETURN_SUCCESS) {
+ /* CurPos now indicates the point we are seeking from, so seek... */
+ Status = ShellSetFilePosition( FileHandle, (UINT64)(CurPos + offset));
+ if(Status == RETURN_SUCCESS) {
+ // Now, determine our final position.
+ Status = ShellGetFilePosition( FileHandle, (UINT64 *)&CurPos);
+ }
+ }
+ if(Status != RETURN_SUCCESS) {
+ if(Status == EFI_UNSUPPORTED) {
+ errno = EISDIR;
+ }
+ else {
+ errno = EFI2errno(Status);
+ }
+ EFIerrno = Status;
+ CurPos = EOF;
+ }
+ return CurPos;
+}
+
+/** The directory path is created with the access permissions specified by
+ perms.
+
+ The directory is closed after it is created.
+
+ @retval 0 The directory was created successfully.
+ @retval -1 An error occurred and an error code is stored in errno.
+**/
+static
+int
+EFIAPI
+da_ShellMkdir(
+ const char *path,
+ __mode_t perms
+ )
+{
+ SHELL_FILE_HANDLE FileHandle;
+ RETURN_STATUS Status;
+ EFI_FILE_INFO *FileInfo;
+ wchar_t *NewPath;
+ int retval = -1;
+
+ // Convert name from MBCS to WCS and change '/' to '\\'
+ NewPath = NormalizePath( path);
+
+ if(NewPath != NULL) {
+ Status = ShellCreateDirectory( NewPath, &FileHandle);
+ if(Status == RETURN_SUCCESS) {
+ FileInfo = ShellGetFileInfo( FileHandle);
+ Status = RETURN_ABORTED; // In case ShellGetFileInfo() failed
+ if(FileInfo != NULL) {
+ FileInfo->Attribute = Omode2EFI(perms);
+ Status = ShellSetFileInfo( FileHandle, FileInfo);
+ FreePool(FileInfo);
+ if(Status == RETURN_SUCCESS) {
+ (void)ShellCloseFile(&FileHandle);
+ retval = 0;
+ }
+ }
+ }
+ errno = EFI2errno(Status);
+ EFIerrno = Status;
+ free(NewPath);
+ }
+ return retval;
+}
+
+static
+ssize_t
+EFIAPI
+da_ShellRead(
+ IN OUT struct __filedes *filp,
+ IN OUT off_t *offset,
+ IN size_t BufferSize,
+ OUT VOID *Buffer
+)
+{
+ ssize_t BufSize;
+ SHELL_FILE_HANDLE FileHandle;
+ RETURN_STATUS Status;
+
+ if(offset != NULL) {
+ BufSize = (ssize_t)da_ShellSeek(filp, *offset, SEEK_SET);
+ if(BufSize >= 0) {
+ filp->f_offset = BufSize;
+ }
+ }
+
+ BufSize = (ssize_t)BufferSize;
+ FileHandle = (SHELL_FILE_HANDLE)filp->devdata;
+
+ Status = ShellReadFile( FileHandle, (UINTN *)&BufSize, Buffer);
+ if(Status != RETURN_SUCCESS) {
+ EFIerrno = Status;
+ errno = EFI2errno(Status);
+ if(Status == RETURN_BUFFER_TOO_SMALL) {
+ BufSize = -BufSize;
+ }
+ else {
+ BufSize = -1;
+ }
+ }
+ else {
+ filp->f_offset += BufSize; // Advance to where we want to read next.
+ }
+ return BufSize;
+}
+
+static
+ssize_t
+EFIAPI
+da_ShellWrite(
+ IN struct __filedes *filp,
+ IN off_t *offset,
+ IN size_t BufferSize,
+ IN const void *Buffer
+ )
+{
+ ssize_t BufSize;
+ SHELL_FILE_HANDLE FileHandle;
+ RETURN_STATUS Status;
+ off_t Position = 0;
+ int How = SEEK_SET;
+
+
+ if((offset != NULL) || (filp->Oflags & O_APPEND)) {
+ if(filp->Oflags & O_APPEND) {
+ Position = 0;
+ How = SEEK_END;
+ }
+ else {
+ Position = *offset;
+ How = SEEK_SET;
+ }
+ BufSize = (ssize_t)da_ShellSeek(filp, Position, How);
+ if(BufSize >= 0) {
+ filp->f_offset = BufSize;
+ }
+ }
+
+ BufSize = (ssize_t)BufferSize;
+ FileHandle = (SHELL_FILE_HANDLE)filp->devdata;
+
+ Status = ShellWriteFile( FileHandle, (UINTN *)&BufSize, (void *)Buffer);
+
+ if(Status != RETURN_SUCCESS) {
+ EFIerrno = Status;
+ errno = EFI2errno(Status);
+ if(Status == EFI_UNSUPPORTED) {
+ errno = EISDIR;
+ }
+ BufSize = -1;
+ }
+ else {
+ filp->f_offset += BufSize; // Advance to where we want to write next.
+ }
+
+ return BufSize;
+}
+
+static
+int
+EFIAPI
+da_ShellStat(
+ struct __filedes *filp,
+ struct stat *statbuf,
+ void *Something
+ )
+{
+ SHELL_FILE_HANDLE FileHandle;
+ EFI_FILE_INFO *FileInfo = NULL;
+ UINT64 Attributes;
+ RETURN_STATUS Status;
+ mode_t newmode;
+
+ FileHandle = (SHELL_FILE_HANDLE)filp->devdata;
+
+ FileInfo = ShellGetFileInfo( FileHandle);
+
+ if(FileInfo != NULL) {
+ // Got the info, now populate statbuf with it
+ statbuf->st_blksize = S_BLKSIZE;
+ statbuf->st_size = FileInfo->FileSize;
+ statbuf->st_physsize = FileInfo->PhysicalSize;
+ statbuf->st_birthtime = Efi2Time( &FileInfo->CreateTime);
+ statbuf->st_atime = Efi2Time( &FileInfo->LastAccessTime);
+ statbuf->st_mtime = Efi2Time( &FileInfo->ModificationTime);
+ Attributes = FileInfo->Attribute;
+ newmode = (mode_t)(Attributes << S_EFISHIFT) | S_ACC_READ;
+ if((Attributes & EFI_FILE_DIRECTORY) == 0) {
+ newmode |= _S_IFREG;
+ if((Attributes & EFI_FILE_READ_ONLY) == 0) {
+ newmode |= S_ACC_WRITE;
+ }
+ }
+ else {
+ newmode |= _S_IFDIR;
+ }
+ statbuf->st_mode = newmode;
+ Status = RETURN_SUCCESS;
+ }
+ else {
+ Status = RETURN_DEVICE_ERROR;
+ }
+ errno = EFI2errno(Status);
+ EFIerrno = Status;
+
+ if(FileInfo != NULL) {
+ FreePool(FileInfo); // Release the buffer allocated by the GetInfo function
+ }
+ return errno? -1 : 0;
+}
+
+static
+int
+EFIAPI
+da_ShellIoctl(
+ struct __filedes *filp,
+ ULONGN cmd,
+ void *argp ///< May be a pointer or a value
+ )
+{
+ return 0;
+}
+
+/** Open an abstract Shell File.
+**/
+int
+EFIAPI
+da_ShellOpen(
+ struct __filedes *filp,
+ void *DevInstance,
+ wchar_t *Path,
+ wchar_t *Flags
+ )
+{
+ UINT64 OpenMode;
+ UINT64 Attributes;
+ SHELL_FILE_HANDLE FileHandle;
+ GenericInstance *Gip;
+ char *NPath;
+ RETURN_STATUS Status;
+ int oflags;
+
+ EFIerrno = RETURN_SUCCESS;
+
+ //Attributes = Omode2EFI(mode);
+ Attributes = 0;
+
+ // Convert oflags to Attributes
+ oflags = filp->Oflags;
+ OpenMode = Oflags2EFI(oflags);
+ if(OpenMode == 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* Do we care if the file already exists?
+ If O_TRUNC, then delete the file. It will be created anew subsequently.
+ If O_EXCL, then error if the file exists and O_CREAT is set.
+
+ !!!!!!!!! Change this to use ShellSetFileInfo() to actually truncate the file
+ !!!!!!!!! instead of deleting and re-creating it.
+ */
+ if((oflags & O_TRUNC) || ((oflags & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT))) {
+ Status = ShellIsFile( Path );
+ if(Status == RETURN_SUCCESS) {
+ // The file exists
+ if(oflags & O_TRUNC) {
+ NPath = AllocateZeroPool(1024);
+ if(NPath == NULL) {
+ errno = ENOMEM;
+ EFIerrno = RETURN_OUT_OF_RESOURCES;
+ return -1;
+ }
+ wcstombs(NPath, Path, 1024);
+ // We do a truncate by deleting the existing file and creating a new one.
+ if(unlink(NPath) != 0) {
+ filp->f_iflags = 0; // Release our reservation on this FD
+ FreePool(NPath);
+ return -1; // errno and EFIerrno are already set.
+ }
+ FreePool(NPath);
+ }
+ else if((oflags & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT)) {
+ errno = EEXIST;
+ EFIerrno = RETURN_ACCESS_DENIED;
+ filp->f_iflags = 0; // Release our reservation on this FD
+ return -1;
+ }
+ }
+ }
+
+ // Call the EFI Shell's Open function
+ Status = ShellOpenFileByName( Path, &FileHandle, OpenMode, Attributes);
+ if(RETURN_ERROR(Status)) {
+ filp->f_iflags = 0; // Release our reservation on this FD
+ // Set errno based upon Status
+ errno = EFI2errno(Status);
+ EFIerrno = Status;
+ return -1;
+ }
+ // Successfully got a regular File
+ filp->f_iflags |= S_IFREG;
+
+ // Update the info in the fd
+ filp->devdata = (void *)FileHandle;
+
+ Gip = (GenericInstance *)DevInstance;
+ filp->f_offset = 0;
+ filp->f_ops = &Gip->Abstraction;
+// filp->devdata = FileHandle;
+
+ return 0;
+}
+
+#include <sys/poll.h>
+/* Returns a bit mask describing which operations could be completed immediately.
+
+ For now, assume the file system, via the shell, is always ready.
+
+ (POLLIN | POLLRDNORM) The file system is ready to be read.
+ (POLLOUT) The file system is ready for output.
+
+*/
+static
+short
+EFIAPI
+da_ShellPoll(
+ struct __filedes *filp,
+ short events
+ )
+{
+ UINT32 RdyMask;
+ short retval = 0;
+
+ RdyMask = (UINT32)filp->Oflags;
+
+ switch(RdyMask & O_ACCMODE) {
+ case O_RDONLY:
+ retval = (POLLIN | POLLRDNORM);
+ break;
+
+ case O_WRONLY:
+ retval = POLLOUT;
+ break;
+
+ case O_RDWR:
+ retval = (POLLIN | POLLRDNORM | POLLOUT);
+ break;
+
+ default:
+ retval = POLLERR;
+ break;
+ }
+ return (retval & (events | POLL_RETONLY));
+}
+
+static
+int
+EFIAPI
+da_ShellRename(
+ const char *from,
+ const char *to
+ )
+{
+ RETURN_STATUS Status;
+ EFI_FILE_INFO *NewFileInfo;
+ EFI_FILE_INFO *OldFileInfo;
+ char *NewFn;
+ int OldFd;
+ SHELL_FILE_HANDLE FileHandle;
+
+ // Open old file
+ OldFd = open(from, O_RDWR, 0);
+ if(OldFd >= 0) {
+ FileHandle = (SHELL_FILE_HANDLE)gMD->fdarray[OldFd].devdata;
+
+ NewFileInfo = malloc(sizeof(EFI_FILE_INFO) + PATH_MAX);
+ if(NewFileInfo != NULL) {
+ OldFileInfo = ShellGetFileInfo( FileHandle);
+ if(OldFileInfo != NULL) {
+ // Copy the Old file info into our new buffer, and free the old.
+ memcpy(OldFileInfo, NewFileInfo, sizeof(EFI_FILE_INFO));
+ FreePool(OldFileInfo);
+ // Strip off all but the file name portion of new
+ NewFn = strrchr(to, '/');
+ if(NewFn == NULL) {
+ NewFn = strrchr(to, '\\');
+ if(NewFn == NULL) {
+ NewFn = (char *)to;
+ }
+ }
+ // Convert new name from MBCS to WCS
+ (void)AsciiStrToUnicodeStr( NewFn, gMD->UString);
+ // Copy the new file name into our new file info buffer
+ wcsncpy(NewFileInfo->FileName, gMD->UString, wcslen(gMD->UString)+1);
+ // Apply the new file name
+ Status = ShellSetFileInfo(FileHandle, NewFileInfo);
+ free(NewFileInfo);
+ if(Status == EFI_SUCCESS) {
+ // File has been successfully renamed. We are DONE!
+ return 0;
+ }
+ errno = EFI2errno( Status );
+ EFIerrno = Status;
+ }
+ else {
+ errno = EIO;
+ }
+ }
+ else {
+ errno = ENOMEM;
+ }
+ }
+ return -1;
+}
+
+static
+int
+EFIAPI
+da_ShellRmdir(
+ struct __filedes *filp
+ )
+{
+ SHELL_FILE_HANDLE FileHandle;
+ RETURN_STATUS Status = RETURN_SUCCESS;
+ EFI_FILE_INFO *FileInfo = NULL;
+ int Count = 0;
+ BOOLEAN NoFile = FALSE;
+
+ errno = 0; // Make it easier to see if we have an error later
+
+ FileHandle = (SHELL_FILE_HANDLE)filp->devdata;
+
+ FileInfo = ShellGetFileInfo(FileHandle);
+ if(FileInfo != NULL) {
+ if((FileInfo->Attribute & EFI_FILE_DIRECTORY) == 0) {
+ errno = ENOTDIR;
+ }
+ else {
+ // See if the directory has any entries other than ".." and ".".
+ FreePool(FileInfo); // Free up the buffer from ShellGetFileInfo()
+ Status = ShellFindFirstFile( FileHandle, &FileInfo);
+ if(Status == RETURN_SUCCESS) {
+ ++Count;
+ while(Count < 3) {
+ Status = ShellFindNextFile( FileHandle, FileInfo, &NoFile);
+ if(Status == RETURN_SUCCESS) {
+ if(NoFile) {
+ break;
+ }
+ ++Count;
+ }
+ else {
+ Count = 99;
+ }
+ }
+ FreePool(FileInfo); // Free buffer from ShellFindFirstFile()
+ if(Count < 3) {
+ // Directory is empty
+ Status = ShellDeleteFile( &FileHandle);
+ if(Status == RETURN_SUCCESS) {
+ EFIerrno = RETURN_SUCCESS;
+ return 0;
+ /* ######## SUCCESSFUL RETURN ######## */
+ }
+ }
+ else {
+ if(Count == 99) {
+ errno = EIO;
+ }
+ else {
+ errno = ENOTEMPTY;
+ }
+ }
+ }
+ }
+ }
+ else {
+ errno = EIO;
+ }
+ EFIerrno = Status;
+ if(errno == 0) {
+ errno = EFI2errno( Status );
+ }
+ return -1;
+}
+
+/** Construct an instance of the abstract Shell device.
+
+ Allocate the instance structure and populate it with the information for
+ the device.
+**/
+RETURN_STATUS
+EFIAPI
+__ctor_DevShell(
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+)
+{
+ GenericInstance *Stream;
+ DeviceNode *Node;
+ RETURN_STATUS Status;
+
+ Stream = (GenericInstance *)AllocateZeroPool(sizeof(GenericInstance));
+ if(Stream == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+
+ Stream->Cookie = CON_COOKIE;
+ Stream->InstanceNum = 1;
+ Stream->Dev = NULL;
+ Stream->Abstraction.fo_close = &da_ShellClose;
+ Stream->Abstraction.fo_read = &da_ShellRead;
+ Stream->Abstraction.fo_write = &da_ShellWrite;
+ Stream->Abstraction.fo_fcntl = &fnullop_fcntl;
+ Stream->Abstraction.fo_poll = &da_ShellPoll;
+ Stream->Abstraction.fo_flush = &fnullop_flush;
+ Stream->Abstraction.fo_stat = &da_ShellStat;
+ Stream->Abstraction.fo_ioctl = &fbadop_ioctl;
+ Stream->Abstraction.fo_delete = &da_ShellDelete;
+ Stream->Abstraction.fo_rmdir = &da_ShellRmdir;
+ Stream->Abstraction.fo_mkdir = &da_ShellMkdir;
+ Stream->Abstraction.fo_rename = &da_ShellRename;
+ Stream->Abstraction.fo_lseek = &da_ShellSeek;
+
+ Node = __DevRegister(NULL, NULL, &da_ShellOpen, Stream, 1, sizeof(GenericInstance), O_RDWR);
+ Status = EFIerrno;
+ Stream->Parent = Node;
+
+ return Status;
+}
+
+RETURN_STATUS
+EFIAPI
+__dtor_DevShell(
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+)
+{
+ if(daDefaultDevice != NULL) {
+ if(daDefaultDevice->InstanceList != NULL) {
+ FreePool(daDefaultDevice->InstanceList);
+ }
+ FreePool(daDefaultDevice);
+ }
+ return RETURN_SUCCESS;
+}
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