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76beedc09c
Functions which call these helper functions always pass the last parameter as a va_list argument. Add a conditional block around a MSFT-only pragma so that stringlist.c will compile with GCC. Comment-out the Socket Library components within StdLib.dsc. These components are still in development. Signed-off-by: darylm503 Reviewed by: geekboy15A git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12369 6f19259b-4bc3-4df7-8a09-765794883524
291 lines
13 KiB
C
291 lines
13 KiB
C
/** @file
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The EFI kernel's interpretation of a "file".
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Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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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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*
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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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*
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* file.h 8.3 (Berkeley) 1/9/95
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NetBSD: file.h,v 1.56 2006/05/14 21:38:18 elad Exp
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**/
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#ifndef _PIF_KFILE_H_
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#define _PIF_KFILE_H_
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#include <Uefi.h>
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#include <Protocol/SimpleTextOut.h>
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#include <Protocol/SimpleFileSystem.h>
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#include <wchar.h>
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#include <stdarg.h>
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#include <sys/fcntl.h>
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#include <sys/unistd.h>
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struct stat;
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struct fileops;
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struct _Device_Node;
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/* The number of "special" character stream devices.
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These include:
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stdin, stdout, stderr
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*/
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#define NUM_SPECIAL 3
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/* Organization of the f_iflags member of the __filedes structure. */
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#define DTYPE_MASK 0x00000007 ///< Device Type
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#define DTYPE_VNODE 1 /* file */
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#define DTYPE_SOCKET 2 /* communications endpoint */
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#define DTYPE_PIPE 3 /* pipe */
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#define DTYPE_KQUEUE 4 /* event queue */
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#define DTYPE_MISC 5 /* misc file descriptor type */
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#define DTYPE_CRYPTO 6 /* crypto */
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#define DTYPE_NAMES "0", "file", "socket", "pipe", "kqueue", "misc", "crypto"
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#define FIF_WANTCLOSE 0x10000000 /* a close is waiting for usecount */
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#define FIF_DELCLOSE 0x20000000 /* Delete on close. */
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#define FIF_LARVAL 0x80000000 /* not fully constructed; don't use */
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/*
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This structure must be a multiple of 8 bytes in length.
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*/
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struct __filedes {
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off_t f_offset; /* current position in file */
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const struct fileops *f_ops;
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void *devdata; /* Device-specific data */
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int Oflags; // From the open call
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int Omode; // From the open call
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int RefCount; // Reference count of opens
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UINT32 f_flag; /* see fcntl.h */
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UINT32 f_iflags; // In use if non-zero
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UINT16 MyFD; // Which FD this is.
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UINT16 Reserved_1; // Force this structure to be a multiple of 8-bytes in length
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};
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struct fileops {
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/* These functions must always be implemented. */
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int (EFIAPI *fo_close) (struct __filedes *filp);
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ssize_t (EFIAPI *fo_read) (struct __filedes *filp, off_t *Offset, size_t Len, void *Buf);
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ssize_t (EFIAPI *fo_write) (struct __filedes *filp, off_t *Offset, size_t Len, const void *Buf);
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/* Call the fnullop_* version of these functions if not implemented by the device. */
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int (EFIAPI *fo_fcntl) (struct __filedes *filp, UINT32 Cmd, void *p3, void *p4);
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short (EFIAPI *fo_poll) (struct __filedes *filp, short Events);
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int (EFIAPI *fo_flush) (struct __filedes *filp);
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/* Call the fbadop_* version of these functions if not implemented by the device. */
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int (EFIAPI *fo_stat) (struct __filedes *filp, struct stat *StatBuf, void *Buf);
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int (EFIAPI *fo_ioctl) (struct __filedes *filp, ULONGN Cmd, va_list argp);
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int (EFIAPI *fo_delete) (struct __filedes *filp);
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int (EFIAPI *fo_rmdir) (struct __filedes *filp);
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int (EFIAPI *fo_mkdir) (const char *path, __mode_t perms);
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int (EFIAPI *fo_rename) (const char *from, const char *to);
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/* Use a NULL if this function has not been implemented by the device. */
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off_t (EFIAPI *fo_lseek) (struct __filedes *filp, off_t, int);
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};
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/* A generic instance structure which is valid for
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for all device instance structures.
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All device instance structures MUST be a multiple of 8-bytes in length.
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*/
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typedef struct {
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UINT32 Cookie; ///< Special value identifying this as a valid Instance
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UINT32 InstanceNum; ///< Which instance is this? Zero-based.
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EFI_HANDLE Dev; ///< Pointer to either Input or Output Protocol.
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struct _Device_Node *Parent; ///< Points to the parent Device Node.
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struct fileops Abstraction; ///< Pointers to functions implementing this device's abstraction.
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UINTN Reserved_1; // Force this to always be a multiple of 8-bytes in length
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} GenericInstance;
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/* Type of all Device-specific handler's open routines. */
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typedef
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int (EFIAPI *FO_OPEN) (struct _Device_Node *This, struct __filedes *FD,
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int Instance, wchar_t *Path, wchar_t *MPath);
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#define FILE_IS_USABLE(fp) (((fp)->f_iflags & \
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(FIF_WANTCLOSE|FIF_LARVAL)) == 0)
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#define FILE_SET_MATURE(fp) \
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do { \
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(fp)->f_iflags &= ~FIF_LARVAL; \
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} while (/*CONSTCOND*/0)
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/*
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* Flags for fo_read and fo_write.
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*/
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#define FOF_UPDATE_OFFSET 0x01 /* update the file offset */
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__BEGIN_DECLS
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int fdcreate (CHAR16 *, UINT32, UINT32, BOOLEAN, VOID *, const struct fileops *);
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/* Commonly used fileops
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fnullop_* Does nothing and returns success.
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fbadop_* Does nothing and returns EPERM
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*/
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int EFIAPI fnullop_fcntl (struct __filedes *filp, UINT32 Cmd, void *p3, void *p4);
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short EFIAPI fnullop_poll (struct __filedes *filp, short Events);
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int EFIAPI fnullop_flush (struct __filedes *filp);
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int EFIAPI fbadop_stat (struct __filedes *filp, struct stat *StatBuf, void *Buf);
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int EFIAPI fbadop_ioctl (struct __filedes *filp, ULONGN Cmd, va_list argp);
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int EFIAPI fbadop_delete (struct __filedes *filp);
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int EFIAPI fbadop_rmdir (struct __filedes *filp);
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int EFIAPI fbadop_mkdir (const char *path, __mode_t perms);
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int EFIAPI fbadop_rename (const char *from, const char *to);
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__END_DECLS
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/* From the original file... */
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#if 0
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//struct proc;
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//struct lwp;
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//struct uio;
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//struct iovec;
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//struct knote;
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//LIST_HEAD(filelist, file);
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//extern struct filelist filehead; /* head of list of open files */
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//extern int maxfiles; /* kernel limit on # of open files */
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//extern int nfiles; /* actual number of open files */
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//extern const struct fileops vnops; /* vnode operations for files */
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struct fileops {
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int (*fo_read) (struct file *, off_t *, struct uio *, kauth_cred_t, int);
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int (*fo_write) (struct file *, off_t *, struct uio *, kauth_cred_t, int);
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int (*fo_ioctl) (struct file *, u_long, void *, struct lwp *);
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int (*fo_fcntl) (struct file *, u_int, void *, struct lwp *);
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int (*fo_poll) (struct file *, int, struct lwp *);
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int (*fo_stat) (struct file *, struct stat *, struct lwp *);
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int (*fo_close) (struct file *, struct lwp *);
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};
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/*
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* Kernel descriptor table.
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* One entry for each open kernel vnode and socket.
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*/
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struct file {
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LIST_ENTRY(file) f_list; /* list of active files */
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void *f_data; /* descriptor data, e.g. vnode/socket */
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const struct fileops *f_ops;
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void *f_DevDesc; /* Device Descriptor pointer */
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EFI_FILE_HANDLE FileHandle;
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EFI_HANDLE Handle;
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off_t f_offset; /* current position in file */
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int f_flag; /* see fcntl.h */
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UINT32 f_iflags; /* internal flags; FIF_* */
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int f_advice; /* access pattern hint; UVM_ADV_* */
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int f_type; /* descriptor type */
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int f_usecount; /* number active users */
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u_int f_count; /* reference count */
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u_int f_msgcount; /* references from message queue */
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// kauth_cred_t f_cred; /* creds associated with descriptor */
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struct simplelock f_slock;
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UINT16 MyFD; /* Which FD this is. */
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};
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#ifdef DIAGNOSTIC
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#define FILE_USE_CHECK(fp, str) \
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do { \
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if ((fp)->f_usecount < 0) \
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panic(str); \
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} while (/* CONSTCOND */ 0)
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#else
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#define FILE_USE_CHECK(fp, str) /* nothing */
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#endif
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/*
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* FILE_USE() must be called with the file lock held.
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* (Typical usage is: `fp = fd_getfile(..); FILE_USE(fp);'
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* and fd_getfile() returns the file locked)
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*
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* fp is a pointer to a __filedes structure.
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*/
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#define FILE_USE(fp) \
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do { \
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(fp)->f_usecount++; \
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FILE_USE_CHECK((fp), "f_usecount overflow"); \
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simple_unlock(&(fp)->f_slock); \
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} while (/* CONSTCOND */ 0)
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#define FILE_UNUSE_WLOCK(fp, l, havelock) \
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do { \
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if (!(havelock)) \
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simple_lock(&(fp)->f_slock); \
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if ((fp)->f_iflags & FIF_WANTCLOSE) { \
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simple_unlock(&(fp)->f_slock); \
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/* Will drop usecount */ \
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(void) closef((fp), (l)); \
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break; \
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} else { \
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(fp)->f_usecount--; \
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FILE_USE_CHECK((fp), "f_usecount underflow"); \
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} \
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simple_unlock(&(fp)->f_slock); \
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} while (/* CONSTCOND */ 0)
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#define FILE_UNUSE(fp, l) FILE_UNUSE_WLOCK(fp, l, 0)
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#define FILE_UNUSE_HAVELOCK(fp, l) FILE_UNUSE_WLOCK(fp, l, 1)
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__BEGIN_DECLS
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//int dofileread (struct lwp *, int, struct file *, void *, size_t, off_t *, int, register_t *);
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//int dofilewrite (struct lwp *, int, struct file *, const void *, size_t, off_t *, int, register_t *);
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//int dofilereadv (struct lwp *, int, struct file *, const struct iovec *, int, off_t *, int, register_t *);
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//int dofilewritev(struct lwp *, int, struct file *, const struct iovec *, int, off_t *, int, register_t *);
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//int fsetown (struct proc *, pid_t *, int, const void *);
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//int fgetown (struct proc *, pid_t, int, void *);
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//void fownsignal (pid_t, int, int, int, void *);
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//int fdclone (struct lwp *, struct file *, int, int, const struct fileops *, void *);
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/* Commonly used fileops
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fnullop_* Does nothing and returns success.
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fbadop_* Does nothing and returns EPERM
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*/
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//int fnullop_fcntl (struct file *, u_int, void *, struct lwp *);
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//int fnullop_poll (struct file *, int, struct lwp *);
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//int fnullop_kqfilter(struct file *, struct knote *);
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//int fbadop_stat (struct file *, struct stat *, struct lwp *);
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//int fbadop_ioctl (struct file *, u_long, void *, struct lwp *);
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__END_DECLS
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#endif
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#endif /* _PIF_KFILE_H_ */
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