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This patch fixes 2 issues related to symbolic links:
1. when "fs ls" a directory, symbolic links are not shown.
It is because Ext2fsLs() only shows regular files and directories.
2. when "fs ls <symbolic_link>" the output is incorrect.
It is because File->FileNamePtr points to a local variable,
"NameBuf" in Ext2fsOpen(), if the file is a symbolic link
This patch replaces File->FileNamePtr with FileNameBuf.
It slightly increases Ext2fsLs/Ext2fsOpen/SearchDirectory time,
because of the use of strcpy and strcat.
Test method:
1. create a regular file, "a", in directory "x"
2. create a symbolic link file, "b", pointing to "a".
3. under the shell of OSLoader,
"fs ls x"
- expected result: a, b (symbolic link)
"fs ls x/a"
- expected result: a and its file size is shown
"fs ls x/b"
- expected result: b -> a, and the file size of a is shown
Verify: TGL-UP3 RVP
Signed-off-by: Stanley Chang <stanley.chang@intel.com>
172 lines
5.9 KiB
C
172 lines
5.9 KiB
C
/** @file
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Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. All advertising materials mentioning features or use of this software
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must display the following acknowledgement:
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This product includes software developed by Christopher G. Demetriou
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for the NetBSD Project.
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4. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Copyright (c) 1993
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The Regents of the University of California. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the University nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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@file stand.h 8.1 (Berkeley) 6/11/93
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libsa_fs_stand.h
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Definitions (file-system related) for/from the NetBSD libsa library.
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**/
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#ifndef _LIBSA_FS_STAND_H_
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#define _LIBSA_FS_STAND_H_
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#define LIBSA_SINGLE_DEVICE bdev
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enum seek {
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SEEK_SET = 0,
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SEEK_CUR,
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SEEK_END
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};
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//
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// File information (stats); returned by the fs_readdir() function:
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//
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typedef struct {
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UINT32 StatMode; // file type and protection (access permissions)
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UINT32
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StatSize; // file size (in bytes)
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} STAT;
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//
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// <sys/types.h>
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//
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typedef long int DADDRESS;
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typedef long int OFFSET;
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typedef unsigned long ULONG;
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typedef unsigned long INODE;
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typedef struct {
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INT32 FileFlags; // see F_* below
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#if !defined(LIBSA_SINGLE_DEVICE)
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DEVSW *DevPtr; // pointer to device operations
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#endif
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VOID *FileDevData; // device specific data
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VOID *FileSystemSpecificData; // file system specific data
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#if !defined(LIBSA_NO_RAW_ACCESS)
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OFFSET FileOffset; // current file offset (F_RAW)
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#endif
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CHAR8 FileNameBuf[EXT2FS_MAXNAMLEN]; // buffer to store file name (not always the actual name, e.g., symbolic link)
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} OPEN_FILE;
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#if ! defined(LIBSA_SINGLE_DEVICE)
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typedef const struct {
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CHAR8 *Devname;
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INT32 (*DevStrategy) (VOID *, INT32, DADDRESS, UINT32, VOID *, UINT32 *);
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INT32 (*DevOpen) (OPEN_FILE *, ...);
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INT32 (*DevClose) (OPEN_FILE *);
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INT32 (*DevIoctl) (OPEN_FILE *, ULONG, VOID *);
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} DEVSW;
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#define DEV_NAME(d) ((d)->Devname)
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#define DEV_STRATEGY(d) ((d)->DevStrategy)
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#else
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/**
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Gives the info of device block config.
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@param DevData Device privete data.
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@param ReadWrite Read write
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@param BlockNum Block number to start
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@param Size Size to read block.
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@param Buf Buffer to read the block data.
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@param RSize
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@retval EFI_SUCCESS The function completed successfully.
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@retval !EFI_SUCCESS Something error while read FILE.
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**/
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RETURN_STATUS
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EFIAPI
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BDevStrategy (
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VOID *DevData,
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INT32 ReadWrite,
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DADDRESS BlockNum,
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UINT32 Size,
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VOID *Buf,
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UINT32 *RSize
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);
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#endif
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//
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// f_flags values
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//
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#define F_READ 0x0001 // file opened for reading
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#define F_WRITE 0x0002 // file opened for writing
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#define F_RAW 0x0004 // raw device open - no file system
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#define F_NODEV 0x0008 // network open - no device
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//
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// dosfs_stat() needs them
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//
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#define S_IFMT 00170000
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#define S_IFSOCK 0140000
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#define S_IFLNK 0120000
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#define S_IFREG 0100000
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#define S_IFBLK 0060000
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#define S_IFDIR 0040000
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#define S_IFCHR 0020000
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#define S_IFIFO 0010000
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#define S_ISUID 0004000
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#define S_ISGID 0002000
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#define S_ISVTX 0001000
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#endif
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