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/* $Id: shfile.h 3473 2020-09-16 21:12:58Z bird $ */
/** @file
* File management.
*/
/*
* Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
*
*
* This file is part of kBuild.
*
* kBuild is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* kBuild is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with kBuild; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef ___shfile_h
#define ___shfile_h
#include "shtypes.h"
#include "shthread.h"
#include <fcntl.h>
#include <sys/stat.h>
#ifdef _MSC_VER
# define _PATH_DEVNULL "nul"
# define _PATH_DEFPATH "."
#else
# if !defined(__sun__)
# include <paths.h>
# endif
# ifndef _PATH_DEVNULL
# define _PATH_DEVNULL "/dev/null"
# endif
# ifndef _PATH_DEFPATH
# define _PATH_DEFPATH "/bin:/usr/bin:/sbin:/usr/sbin"
# endif
#endif
#include <limits.h> /* for PIPE_BUF */
#ifndef _MSC_VER
# include <fcntl.h>
# include <unistd.h>
# ifndef O_BINARY
# define O_BINARY 0
# endif
# ifndef O_TEXT
# define O_TEXT 0
# endif
#else
# include <io.h>
# include <direct.h>
# define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
# define S_ISLNK(m) 0
# define S_IRWXU (_S_IREAD | _S_IWRITE | _S_IEXEC)
# define S_IXUSR _S_IEXEC
# define S_IWUSR _S_IWRITE
# define S_IRUSR _S_IREAD
# define S_IRWXG 0000070
# define S_IRGRP 0000040
# define S_IWGRP 0000020
# define S_IXGRP 0000010
# define S_IRWXO 0000007
# define S_IROTH 0000004
# define S_IWOTH 0000002
# define S_IXOTH 0000001
# define S_ISUID 0004000
# define S_ISGID 0002000
# define ALLPERMS 0000777
# define F_DUPFD 0
# define F_GETFD 1
# define F_SETFD 2
# define F_GETFL 3
# define F_SETFL 4
# define FD_CLOEXEC 1
# define F_OK 0
# define X_OK 1
# define W_OK 2
# define R_OK 4
# define O_NONBLOCK 0 /** @todo */
#endif
#if K_OS == K_OS_WINDOWS
# include "nt/ntstat.h"
#endif
/**
* One file.
*/
typedef struct shfile
{
int fd; /**< The shell file descriptor number. */
unsigned oflags; /**< Open flags. */
unsigned shflags; /**< The shell file descriptor flags. */
intptr_t native; /**< The native file descriptor number. */
#ifdef DEBUG
char *dbgname; /**< The name of the file, if applicable, debug builds only. */
# define SHFILE_DBGNAME(a) a
# else
# define SHFILE_DBGNAME(a) NULL
#endif
} shfile;
/** @name shfile::shflags values.
* @{
*/
#define SHFILE_FLAGS_CLOSE_ON_EXEC 0x0001
#define SHFILE_FLAGS_TRACE 0x0002 /**< The 'trace' file, keep open after execve. */
#define SHFILE_FLAGS_TYPE_MASK 0x00f0
#define SHFILE_FLAGS_FILE 0x0000
#define SHFILE_FLAGS_PIPE 0x0010
#define SHFILE_FLAGS_DIR 0x0020
#define SHFILE_FLAGS_TTY 0x0030
#define SHFILE_FLAGS_DIRTY 0x0100 /**< The file has been written to. */
/** @} */
/**
* The file descriptor table for a shell.
*/
typedef struct shfdtab
{
shmtx mtx; /**< Mutex protecting any operations on the table and it's handles. */
char *cwd; /**< The current directory for this shell instance. */
unsigned size; /**< The size of the table (number of entries). */
shfile *tab; /**< Pointer to the table. */
} shfdtab;
int shfile_init(shfdtab *, shfdtab *);
void shfile_uninit(shfdtab *, int);
void shfile_fork_win(shfdtab *pfdtab, int set, intptr_t *hndls);
typedef struct shfdexecwin
{
int inherithandles;
int startsuspended;
shmtxtmp tmp;
int replacehandles[3];
intptr_t handles[3];
void *strtinfo;
} shfdexecwin;
int shfile_exec_win(shfdtab *pfdtab, int prepare, shfdexecwin *info);
int shfile_exec_unix(shfdtab *pfdtab);
#if K_OS == K_OS_WINDOWS && defined(KASH_ASYNC_CLOSE_HANDLE)
void shfile_async_close_sync(void);
#endif
int shfile_open(shfdtab *, const char *, unsigned, mode_t);
#if K_OS == K_OS_WINDOWS
# define SHFILE_PIPE_SIZE 65536
#elif defined(PIPE_BUF)
# define SHFILE_PIPE_SIZE PIPE_BUF
#else
# define SHFILE_PIPE_SIZE 4096
#endif
int shfile_pipe(shfdtab *, int [2]);
int shfile_close(shfdtab *, unsigned);
long shfile_read(shfdtab *, int, void *, size_t);
long shfile_write(shfdtab *, int, const void *, size_t);
long shfile_lseek(shfdtab *, int, long, int);
int shfile_fcntl(shfdtab *, int fd, int cmd, int arg);
int shfile_dup(shfdtab *, int fd);
int shfile_movefd(shfdtab *, int fdfrom, int fdto);
int shfile_movefd_above(shfdtab *, int fdfrom, int fdmin);
int shfile_stat(shfdtab *, const char *, struct stat *);
int shfile_stat_isreg(shfdtab *, const char *); /**< returns -1, 0 or 1. */
int shfile_stat_exists(shfdtab *, const char *); /**< same as shfile_stat, but discards the stat data. */
int shfile_lstat(shfdtab *, const char *, struct stat *);
int shfile_chdir(shfdtab *, const char *);
char *shfile_getcwd(shfdtab *, char *, int);
int shfile_access(shfdtab *, const char *, int);
int shfile_isatty(shfdtab *, int);
int shfile_cloexec(shfdtab *, int, int);
int shfile_set_trace(shfdtab *, int);
int shfile_ioctl(shfdtab *, int, unsigned long, void *);
#if defined(_MSC_VER) || defined(__OS2__)
# define TIOCGWINSZ 0x4201
typedef struct sh_winsize
{
unsigned ws_row; /**< Rows, in characters. */
unsigned ws_col; /**< Columns, in characters. */
unsigned ws_xpixel; /**< Horizontal size, pixels. */
unsigned ws_ypixel; /**< Vertical size, pixels. */
} sh_winsize;
#else
typedef struct winsize sh_winsize;
#endif
mode_t shfile_get_umask(shfdtab *);
void shfile_set_umask(shfdtab *, mode_t);
typedef struct sh_dirent
{
char name[260];
} shdirent;
typedef struct shdir
{
shfdtab *pfdtab;
void *native;
shdirent ent;
#if K_OS == K_OS_WINDOWS
size_t off;
size_t cb;
char buf[32768 - sizeof(void *) * 2 - sizeof(shdirent) * 2];
#endif
} shdir;
shdir *shfile_opendir(shfdtab *, const char *);
shdirent *shfile_readdir(struct shdir *);
void shfile_closedir(struct shdir *);
#endif
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