src/libstatgrab/error.c

/*
 * i-scream libstatgrab
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: error.c,v 1.11 2004/04/08 11:14:02 ats Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include "statgrab.h"
#include "tools.h"

static sg_error error = SG_ERROR_NONE;
#define ERROR_ARG_MAX 256
static char error_arg[ERROR_ARG_MAX];
static char error_strerror[ERROR_ARG_MAX];

void sg_set_error(sg_error code, const char *arg) {
        error = code;
        if (arg != NULL) {
                sg_strlcpy(error_arg, arg, sizeof error_arg);
        }
        else {
                /* FIXME is this the best idea? */
                error_arg[0] = '\0';
        }
}

void sg_set_error_with_errno(sg_error code, const char *arg, int use_errno) {
        if(use_errno) {
                sg_strlcpy(error_strerror, strerror(errno), sizeof error_strerror);
        }
        else {
                /* FIXME is this the best idea? */
                error_strerror[0] = '\0';
        }
        sg_set_error(code, arg);
}

sg_error sg_get_error() {
        return error;
}

const char *sg_get_error_arg() {
        return error_arg;
}

const char *sg_get_error_strerror() {
        return error_strerror;
}

const char *sg_str_error(sg_error code) {
        switch (code) {
        case SG_ERROR_NONE:
                return "no error";
        case SG_ERROR_ASPRINTF:
                return "asprintf failed";
        case SG_ERROR_DEVSTAT_GETDEVS:
                return "devstat_getdevs failed";
        case SG_ERROR_DEVSTAT_SELECTDEVS:
                return "devstat_selectdevs failed";
        case SG_ERROR_ENOENT:
                return "system call received ENOENT";
        case SG_ERROR_GETIFADDRS:
                return "getifaddress failed";
        case SG_ERROR_GETMNTINFO:
                return "getmntinfo failed";
        case SG_ERROR_GETPAGESIZE:
                return "getpagesize failed";
        case SG_ERROR_KSTAT_DATA_LOOKUP:
                return "kstat_data_lookup failed";
        case SG_ERROR_KSTAT_LOOKUP:
                return "kstat_lookup failed";
        case SG_ERROR_KSTAT_OPEN:
                return "kstat_open failed";
        case SG_ERROR_KSTAT_READ:
                return "kstat_read failed";
        case SG_ERROR_KVM_GETSWAPINFO:
                return "kvm_getswapinfo failed";
        case SG_ERROR_KVM_OPENFILES:
                return "kvm_openfiles failed";
        case SG_ERROR_MALLOC:
                return "malloc failed";
        case SG_ERROR_OPEN:
                return "failed to open file";
        case SG_ERROR_OPENDIR:
                return "failed to open directory";
        case SG_ERROR_PARSE:
                return "failed to parse input";
        case SG_ERROR_SETEGID:
                return "setegid failed";
        case SG_ERROR_SETEUID:
                return "seteuid failed";
        case SG_ERROR_SETMNTENT:
                return "setmntent failed";
        case SG_ERROR_SOCKET:
                return "socket failed";
        case SG_ERROR_SWAPCTL:
                return "swapctl failed";
        case SG_ERROR_SYSCONF:
                return "sysconf failed";
        case SG_ERROR_SYSCTL:
                return "sysctl failed";
        case SG_ERROR_SYSCTLBYNAME:
                return "sysctlbyname failed";
        case SG_ERROR_SYSCTLNAMETOMIB:
                return "sysctlnametomib failed";
        case SG_ERROR_UNAME:
                return "uname failed";
        case SG_ERROR_UNSUPPORTED:
                return "unsupported function";
        case SG_ERROR_XSW_VER_MISMATCH:
                return "XSW version mismatch";
        }
        return "unknown error";
}

Revision:	1.12
Committed:	Fri Jul 16 15:07:14 2004 UTC (19 years, 10 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+19 -1 lines
Log Message:	Add function to allow grabbing of the current errno. Should we store errno too maybe?
#	User	Rev	Content
1	tdb	1.1	/*
2			* i-scream libstatgrab
3			* http://www.i-scream.org
4			* Copyright (C) 2000-2004 i-scream
5			*
6			* This library is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public
8			* License as published by the Free Software Foundation; either
9			* version 2.1 of the License, or (at your option) any later version.
10			*
11			* This library is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15			*
16			* You should have received a copy of the GNU Lesser General Public
17			* License along with this library; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19			* 02111-1307 USA
20			*
21	tdb	1.12	* $Id: error.c,v 1.11 2004/04/08 11:14:02 ats Exp $
22	tdb	1.1	*/
23
24			#ifdef HAVE_CONFIG_H
25			#include "config.h"
26			#endif
27
28			#include <stdlib.h>
29	tdb	1.12	#include <string.h>
30			#include <errno.h>
31	tdb	1.1
32			#include "statgrab.h"
33	ats	1.11	#include "tools.h"
34	tdb	1.1
35	ats	1.2	static sg_error error = SG_ERROR_NONE;
36	ats	1.8	#define ERROR_ARG_MAX 256
37			static char error_arg[ERROR_ARG_MAX];
38	tdb	1.12	static char error_strerror[ERROR_ARG_MAX];
39	tdb	1.1
40			void sg_set_error(sg_error code, const char *arg) {
41			error = code;
42	tdb	1.9	if (arg != NULL) {
43	ats	1.10	sg_strlcpy(error_arg, arg, sizeof error_arg);
44	tdb	1.9	}
45			else {
46			/* FIXME is this the best idea? */
47			error_arg[0] = '\0';
48			}
49	tdb	1.1	}
50
51	tdb	1.12	void sg_set_error_with_errno(sg_error code, const char *arg, int use_errno) {
52			if(use_errno) {
53			sg_strlcpy(error_strerror, strerror(errno), sizeof error_strerror);
54			}
55			else {
56			/* FIXME is this the best idea? */
57			error_strerror[0] = '\0';
58			}
59			sg_set_error(code, arg);
60			}
61
62	tdb	1.1	sg_error sg_get_error() {
63			return error;
64			}
65
66	ats	1.8	const char *sg_get_error_arg() {
67			return error_arg;
68	tdb	1.12	}
69
70			const char *sg_get_error_strerror() {
71			return error_strerror;
72	ats	1.8	}
73
74	ats	1.2	const char *sg_str_error(sg_error code) {
75			switch (code) {
76			case SG_ERROR_NONE:
77			return "no error";
78	tdb	1.7	case SG_ERROR_ASPRINTF:
79			return "asprintf failed";
80			case SG_ERROR_DEVSTAT_GETDEVS:
81			return "devstat_getdevs failed";
82			case SG_ERROR_DEVSTAT_SELECTDEVS:
83			return "devstat_selectdevs failed";
84			case SG_ERROR_ENOENT:
85			return "system call received ENOENT";
86			case SG_ERROR_GETIFADDRS:
87			return "getifaddress failed";
88			case SG_ERROR_GETMNTINFO:
89			return "getmntinfo failed";
90			case SG_ERROR_GETPAGESIZE:
91			return "getpagesize failed";
92			case SG_ERROR_KSTAT_DATA_LOOKUP:
93			return "kstat_data_lookup failed";
94			case SG_ERROR_KSTAT_LOOKUP:
95			return "kstat_lookup failed";
96			case SG_ERROR_KSTAT_OPEN:
97			return "kstat_open failed";
98			case SG_ERROR_KSTAT_READ:
99			return "kstat_read failed";
100			case SG_ERROR_KVM_GETSWAPINFO:
101			return "kvm_getswapinfo failed";
102			case SG_ERROR_KVM_OPENFILES:
103			return "kvm_openfiles failed";
104	tdb	1.4	case SG_ERROR_MALLOC:
105			return "malloc failed";
106			case SG_ERROR_OPEN:
107			return "failed to open file";
108	tdb	1.7	case SG_ERROR_OPENDIR:
109			return "failed to open directory";
110	tdb	1.4	case SG_ERROR_PARSE:
111			return "failed to parse input";
112	tdb	1.7	case SG_ERROR_SETEGID:
113			return "setegid failed";
114			case SG_ERROR_SETEUID:
115			return "seteuid failed";
116	tdb	1.6	case SG_ERROR_SETMNTENT:
117			return "setmntent failed";
118	tdb	1.7	case SG_ERROR_SOCKET:
119			return "socket failed";
120			case SG_ERROR_SWAPCTL:
121			return "swapctl failed";
122			case SG_ERROR_SYSCONF:
123			return "sysconf failed";
124			case SG_ERROR_SYSCTL:
125			return "sysctl failed";
126			case SG_ERROR_SYSCTLBYNAME:
127			return "sysctlbyname failed";
128			case SG_ERROR_SYSCTLNAMETOMIB:
129			return "sysctlnametomib failed";
130			case SG_ERROR_UNAME:
131			return "uname failed";
132			case SG_ERROR_UNSUPPORTED:
133			return "unsupported function";
134			case SG_ERROR_XSW_VER_MISMATCH:
135			return "XSW version mismatch";
136	ats	1.2	}
137	ats	1.8	return "unknown error";
138	tdb	1.1	}
139