msh.c

来自「为samsung2410 ARM移植的busybox工具包」· C语言 代码 · 共 2,740 行 · 第 1/5 页

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */
#define TPIPE   3				/* a | b */
#define TLIST   4				/* a [&;] b */
#define TOR     5				/* || */
#define TAND    6				/* && */
#define TFOR    7
#define TDO     8
#define TCASE   lues returned by wait
 */
#define WAITSIG(s) ((s)&0177)
#define WAITVAL(s) (((s)>>8)&0377)
#define WAITCORE(s) (((s)&0200)!=0)

/*
 * library and system defintions
 */
typedef void xint;				/* base type of jmp_buf, for not broken compilers */

/*
 * shell components
 */

#define QUOTE   0200

#define NOBLOCK ((struct op *)NULL)
#define NOWORD  ((char *)NULL)
#define NOWORDS ((char **)NULL)
#define NOPIPE  ((int *)NULL)

/*
 * Description of a command or an operation on commands.
 * Might eventually use a union.
 */
struct op {
	int type;					/* operation type, see below */
	char **words;				/* arguments to a command */
	struct ioword **ioact;		/* IO actions (eg, < > >>) */
	struct op *left;
	struct op *right;
	char *str;					/* identifier for case and for */
};

#define TCOM    1				/* command */
#define TPAREN  2				/* (c-list) */