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/** @file
Function declarations for UEFI "system calls".
Concept derived from NetBSD's unistd.h file.
Copyright (c) 2010 - 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.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _EFI_SYS_CALL_H
#define _EFI_SYS_CALL_H
#include <sys/EfiCdefs.h>
#include <sys/types.h>
struct stat; /* Structure declared in <sys/stat.h> */
#define STDIN_FILENO 0 /* standard input file descriptor */
#define STDOUT_FILENO 1 /* standard output file descriptor */
#define STDERR_FILENO 2 /* standard error file descriptor */
/* access function */
#define F_OK 0 /* test for existence of file */
#define X_OK 0x01 /* test for execute or search permission */
#define W_OK 0x02 /* test for write permission */
#define R_OK 0x04 /* test for read permission */
/* whence values for lseek(2)
Always ensure that these are consistent with <stdio.h> and <unistd.h>!
*/
#ifndef SEEK_SET
#define SEEK_SET 0 /* set file offset to offset */
#endif
#ifndef SEEK_CUR
#define SEEK_CUR 1 /* set file offset to current plus offset */
#endif
#ifndef SEEK_END
#define SEEK_END 2 /* set file offset to EOF plus offset */
#endif
// Parameters for the ValidateFD function.
#define VALID_OPEN 1
#define VALID_CLOSED 0
#define VALID_DONT_CARE -1
__BEGIN_DECLS
/* EFI versions of BSD system calls used in stdio */
int close (int fd);
ssize_t read (int fd, void *buf, size_t n);
ssize_t write (int fd, const void *buf, size_t n);
int unlink (const char *name);
int dup2 (int, int);
int rmdir (const char *);
int isatty (int);
/* These system calls are also declared in sys/fcntl.h */
#ifndef __FCNTL_SYSCALLS_DECLARED
#define __FCNTL_SYSCALLS_DECLARED
int open (const char *name, int oflags, int mode);
int creat (const char *, mode_t);
int fcntl (int, int, ...);
#endif // __FCNTL_SYSCALLS_DECLARED
/* These system calls are also declared in stat.h */
#ifndef __STAT_SYSCALLS_DECLARED
#define __STAT_SYSCALLS_DECLARED
int mkdir (const char *, mode_t);
int fstat (int, struct stat *);
int lstat (const char *, struct stat *);
int stat (const char *, void *);
int chmod (const char *, mode_t);
#endif // __STAT_SYSCALLS_DECLARED
// These are also declared in sys/types.h
#ifndef __OFF_T_SYSCALLS_DECLARED
#define __OFF_T_SYSCALLS_DECLARED
off_t lseek (int, off_t, int);
int truncate (const char *, off_t);
int ftruncate (int, off_t); // IEEE Std 1003.1b-93
#endif /* __OFF_T_SYSCALLS_DECLARED */
/* EFI-specific Functions. */
int DeleteOnClose(int fd); /* Mark an open file to be deleted when closed. */
/* Find and reserve a free File Descriptor.
Returns the first free File Descriptor greater than or equal to the,
already validated, fd specified by Minfd.
@return Returns -1 if there are no free FDs. Otherwise returns the
found fd.
*/
int FindFreeFD (int MinFd);
/* Validate that fd refers to a valid file descriptor.
IsOpen is interpreted as follows:
- Positive fd must be OPEN
- Zero fd must be CLOSED
- Negative fd may be OPEN or CLOSED
@retval TRUE fd is VALID
@retval FALSE fd is INVALID
*/
BOOLEAN ValidateFD (int fd, int IsOpen);
char *getcwd (char *, size_t);
int chdir (const char *);
/* These system calls don't YET have EFI implementations. */
int access (const char *path, int amode);
int reboot (int, char *);
__END_DECLS
#endif /* _EFI_SYS_CALL_H */
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