usr/dash/exec.h

/*-
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1997-2005
 *	Herbert Xu <herbert@gondor.apana.org.au>.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)exec.h	8.3 (Berkeley) 6/8/95
 */

/* values of cmdtype */
#define CMDUNKNOWN	-1	/* no entry in table for command */
#define CMDNORMAL	0	/* command is an executable program */
#define CMDFUNCTION	1	/* command is a shell function */
#define CMDBUILTIN	2	/* command is a shell builtin */


struct cmdentry {
	int cmdtype;
	union param {
		int index;
		const struct builtincmd *cmd;
		struct funcnode *func;
	} u;
};


/* action to find_command() */
#define DO_ERR		0x01	/* prints errors */
#define DO_ABS		0x02	/* checks absolute paths */
#define DO_NOFUNC	0x04	/* don't return shell functions, for command */
#define DO_ALTPATH	0x08	/* using alternate path */
#define DO_ALTBLTIN	0x20	/* %builtin in alt. path */

extern const char *pathopt;	/* set by padvance */

void shellexec(char **, const char *, int)
    __attribute__((__noreturn__));
char *padvance(const char **, const char *);
int hashcmd(int, char **);
void find_command(char *, struct cmdentry *, int, const char *);
struct builtincmd *find_builtin(const char *);
void hashcd(void);
void changepath(const char *);
#ifdef notdef
void getcmdentry(char *, struct cmdentry *);
#endif
void defun(char *, union node *);
void unsetfunc(const char *);
int typecmd(int, char **);
int commandcmd(int, char **);
1	/*-
2	* Copyright (c) 1991, 1993
3	* The Regents of the University of California. All rights reserved.
4	* Copyright (c) 1997-2005
5	* Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved.
6	*
7	* This code is derived from software contributed to Berkeley by
8	* Kenneth Almquist.
9	*
10	* Redistribution and use in source and binary forms, with or without
11	* modification, are permitted provided that the following conditions
12	* are met:
13	* 1. Redistributions of source code must retain the above copyright
14	* notice, this list of conditions and the following disclaimer.
15	* 2. Redistributions in binary form must reproduce the above copyright
16	* notice, this list of conditions and the following disclaimer in the
17	* documentation and/or other materials provided with the distribution.
18	* 3. Neither the name of the University nor the names of its contributors
19	* may be used to endorse or promote products derived from this software
20	* without specific prior written permission.
21	*
22	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32	* SUCH DAMAGE.
33	*
34	* @(#)exec.h 8.3 (Berkeley) 6/8/95
35	*/
36
37	/* values of cmdtype */
38	#define CMDUNKNOWN -1 /* no entry in table for command */
39	#define CMDNORMAL 0 /* command is an executable program */
40	#define CMDFUNCTION 1 /* command is a shell function */
41	#define CMDBUILTIN 2 /* command is a shell builtin */
42
43
44	struct cmdentry {
45	int cmdtype;
46	union param {
47	int index;
48	const struct builtincmd *cmd;
49	struct funcnode *func;
50	} u;
51	};
52
53
54	/* action to find_command() */
55	#define DO_ERR 0x01 /* prints errors */
56	#define DO_ABS 0x02 /* checks absolute paths */
57	#define DO_NOFUNC 0x04 /* don't return shell functions, for command */
58	#define DO_ALTPATH 0x08 /* using alternate path */
59	#define DO_ALTBLTIN 0x20 /* %builtin in alt. path */
60
61	extern const char pathopt; / set by padvance */
62
63	void shellexec(char *, const char , int)
64	__attribute__((__noreturn__));
65	char padvance(const char , const char );
66	int hashcmd(int, char **);
67	void find_command(char , struct cmdentry , int, const char *);
68	struct builtincmd find_builtin(const char );
69	void hashcd(void);
70	void changepath(const char *);
71	#ifdef notdef
72	void getcmdentry(char , struct cmdentry );
73	#endif
74	void defun(char , union node );
75	void unsetfunc(const char *);
76	int typecmd(int, char **);
77	int commandcmd(int, char **);