[unix-history] / usr / src / bin / sh / errmsg.c

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 */

#ifndef lint
static char sccsid[] = "@(#)errmsg.c	5.1 (Berkeley) 3/7/91";
#endif /* not lint */

#include "shell.h"
#include "output.h"
#include "errmsg.h"
#include <errno.h>


#define ALL (E_OPEN|E_CREAT|E_EXEC)


struct errname {
	short errcode;		/* error number */
	short action;		/* operation which encountered the error */
	char *msg;		/* text describing the error */
};


STATIC const struct errname errormsg[] = {
	EINTR, ALL,	"interrupted",
	EACCES, ALL,	"permission denied",
	EIO, ALL,		"I/O error",
	ENOENT, E_OPEN,	"no such file",
	ENOENT, E_CREAT,	"directory nonexistent",
	ENOENT, E_EXEC,	"not found",
	ENOTDIR, E_OPEN,	"no such file",
	ENOTDIR, E_CREAT,	"directory nonexistent",
	ENOTDIR, E_EXEC,	"not found",
	EISDIR, ALL,	"is a directory",
/*    EMFILE, ALL,	"too many open files", */
	ENFILE, ALL,	"file table overflow",
	ENOSPC, ALL,	"file system full",
#ifdef EDQUOT
	EDQUOT, ALL,	"disk quota exceeded",
#endif
#ifdef ENOSR
	ENOSR, ALL,	"no streams resources",
#endif
	ENXIO, ALL,	"no such device or address",
	EROFS, ALL,	"read-only file system",
	ETXTBSY, ALL,	"text busy",
#ifdef SYSV
	EAGAIN, E_EXEC,	"not enough memory",
#endif
	ENOMEM, ALL,	"not enough memory",
#ifdef ENOLINK
	ENOLINK, ALL,	"remote access failed"
#endif
#ifdef EMULTIHOP
	EMULTIHOP, ALL,	"remote access failed",
#endif
#ifdef ECOMM
	ECOMM, ALL,	"remote access failed",
#endif
#ifdef ESTALE
	ESTALE, ALL,	"remote access failed",
#endif
#ifdef ETIMEDOUT
	ETIMEDOUT, ALL,	"remote access failed",
#endif
#ifdef ELOOP
	ELOOP, ALL,	"symbolic link loop",
#endif
	E2BIG, E_EXEC,	"argument list too long",
#ifdef ELIBACC
	ELIBACC, E_EXEC,	"shared library missing",
#endif
	0, 0,		NULL
};


/*
 * Return a string describing an error.  The returned string may be a
 * pointer to a static buffer that will be overwritten on the next call.
 * Action describes the operation that got the error.
 */

char *
errmsg(e, action) {
	struct errname const *ep;
	static char buf[12];

	for (ep = errormsg ; ep->errcode ; ep++) {
		if (ep->errcode == e && (ep->action & action) != 0)
			return ep->msg;
	}
	fmtstr(buf, sizeof buf, "error %d", e);
	return buf;
}
Commit	Line	Data
af3e82f7 WJ	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Kenneth Almquist.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. All advertising materials mentioning features or use of this software
	17	* must display the following acknowledgement:
	18	* This product includes software developed by the University of
	19	* California, Berkeley and its contributors.
	20	* 4. Neither the name of the University nor the names of its contributors
	21	* may be used to endorse or promote products derived from this software
	22	* without specific prior written permission.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	34	* SUCH DAMAGE.
	35	*/
	36
	37	#ifndef lint
	38	static char sccsid[] = "@(#)errmsg.c 5.1 (Berkeley) 3/7/91";
	39	#endif /* not lint */
	40
	41	#include "shell.h"
	42	#include "output.h"
	43	#include "errmsg.h"
	44	#include <errno.h>
	45
	46
	47	#define ALL (E_OPEN\|E_CREAT\|E_EXEC)
	48
	49
	50	struct errname {
	51	short errcode; /* error number */
	52	short action; /* operation which encountered the error */
	53	char msg; / text describing the error */
	54	};
	55
	56
	57	STATIC const struct errname errormsg[] = {
	58	EINTR, ALL, "interrupted",
	59	EACCES, ALL, "permission denied",
	60	EIO, ALL, "I/O error",
	61	ENOENT, E_OPEN, "no such file",
	62	ENOENT, E_CREAT, "directory nonexistent",
	63	ENOENT, E_EXEC, "not found",
	64	ENOTDIR, E_OPEN, "no such file",
65	ENOTDIR, E_CREAT, "directory nonexistent",
66	ENOTDIR, E_EXEC, "not found",
67	EISDIR, ALL, "is a directory",
68	/* EMFILE, ALL, "too many open files", */
69	ENFILE, ALL, "file table overflow",
70	ENOSPC, ALL, "file system full",
71	#ifdef EDQUOT
72	EDQUOT, ALL, "disk quota exceeded",
73	#endif
74	#ifdef ENOSR
75	ENOSR, ALL, "no streams resources",
76	#endif
77	ENXIO, ALL, "no such device or address",
78	EROFS, ALL, "read-only file system",
79	ETXTBSY, ALL, "text busy",
80	#ifdef SYSV
81	EAGAIN, E_EXEC, "not enough memory",
82	#endif
83	ENOMEM, ALL, "not enough memory",
84	#ifdef ENOLINK
85	ENOLINK, ALL, "remote access failed"
86	#endif
87	#ifdef EMULTIHOP
88	EMULTIHOP, ALL, "remote access failed",
89	#endif
90	#ifdef ECOMM
91	ECOMM, ALL, "remote access failed",
92	#endif
93	#ifdef ESTALE
94	ESTALE, ALL, "remote access failed",
95	#endif
96	#ifdef ETIMEDOUT
97	ETIMEDOUT, ALL, "remote access failed",
98	#endif
99	#ifdef ELOOP
100	ELOOP, ALL, "symbolic link loop",
101	#endif
102	E2BIG, E_EXEC, "argument list too long",
103	#ifdef ELIBACC
104	ELIBACC, E_EXEC, "shared library missing",
105	#endif
106	0, 0, NULL
107	};
108
109
110	/*
111	* Return a string describing an error. The returned string may be a
112	* pointer to a static buffer that will be overwritten on the next call.
113	* Action describes the operation that got the error.
114	*/
115
116	char *
117	errmsg(e, action) {
118	struct errname const *ep;
119	static char buf[12];
120
121	for (ep = errormsg ; ep->errcode ; ep++) {
122	if (ep->errcode == e && (ep->action & action) != 0)
123	return ep->msg;
124	}
125	fmtstr(buf, sizeof buf, "error %d", e);
126	return buf;
127	}