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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/config/ukc.c	Lines:	0	99	0.0 %
Date:	2017-11-07	Branches:	0	78	0.0 %


/*	$OpenBSD: ukc.c,v 1.23 2017/09/27 15:14:52 deraadt Exp $ */

/*
 * Copyright (c) 1999-2001 Mats O Jansson.  All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

#include <sys/types.h>
#include <sys/device.h>

#include <err.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <nlist.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define UKC_MAIN
#include "ukc.h"
#include "exec.h"

void		init(void);
__dead void	usage(void);

int	ukc_mod_kernel = 0;

static void
check_int(int idx, const char *name)
{
	if (nl[idx].n_type == 0)
		printf("WARNING this kernel doesn't support modification "
		    "of %s.\n", name);
}

int
ukc(char *file, char *outfile, int uflag, int force)
{
	int i;
	kvm_t *kd;
	char errbuf[_POSIX2_LINE_MAX];
	int histlen = 0, ok = 1;
	char history[1024], kversion[1024];

	if (file == NULL) {
		warnx("no file specified");
		usage();
	}

	loadkernel(file);

	if (nlist(file, nl) == -1)
		errx(1, "nlist: %s", file);

	if (uflag) {
		if ((kd = kvm_openfiles(NULL,NULL,NULL,O_RDONLY, errbuf)) == 0)
			errx(1, "kvm_openfiles: %s", errbuf);

		if (kvm_nlist(kd, knl) == -1)
			errx(1, "kvm_nlist: %s", kvm_geterr(kd));

		i = 0;
		while (i < NLENTRIES) {
			if (nl[i].n_type != knl[i].n_type ||
			    nl[i].n_desc != knl[i].n_desc ||
			    nl[i].n_value != knl[i].n_value)
				ok = 0;
			i++;
		}

		if (knl[I_HISTLEN].n_type != 0 && ok) {
			if (kvm_read(kd, knl[I_HISTLEN].n_value, &histlen,
			    sizeof(histlen)) != sizeof(histlen))
				warnx("cannot read %s: %s",
				    knl[I_HISTLEN].n_name,
				    kvm_geterr(kd));
		}
		if (knl[CA_HISTORY].n_type != 0 && ok) {
			if (kvm_read(kd, knl[CA_HISTORY].n_value, history,
			    sizeof(history)) != sizeof(history))
				warnx("cannot read %s: %s",
				    knl[CA_HISTORY].n_name,
				    kvm_geterr(kd));
		}
		if (knl[P_VERSION].n_type != 0 && ok) {
			if (kvm_read(kd, knl[P_VERSION].n_value, kversion,
			    sizeof(kversion)) != sizeof(kversion))
				warnx("cannot read %s: %s",
				    knl[P_VERSION].n_name,
				    kvm_geterr(kd));
		}
	}

	if (force == 0 && outfile == NULL)
		printf("WARNING no output file specified\n");

	if (nl[IA_EXTRALOC].n_type == 0 || nl[I_REXTRALOC].n_type == 0 ||
	    nl[I_TEXTRALOC].n_type == 0 ||
	    nl[I_HISTLEN].n_type == 0 || nl[CA_HISTORY].n_type == 0) {
		printf("\
WARNING this kernel doesn't contain all information needed!\n\
WARNING the commands add and change might not work.\n");
		oldkernel = 1;
	}

	if (nl[P_PDEVNAMES].n_type == 0 ||
	    nl[I_PDEVSIZE].n_type == 0 ||
	    nl[S_PDEVINIT].n_type == 0) {
		printf("\
WARNING this kernel doesn't support pseudo devices.\n");
		nopdev = 1;
	}

	check_int(I_BUFCACHEPCT, "BUFCACHEPERCENT");
	check_int(I_NKMEMPG, "NKMEMPAGES");

	init();

	if (uflag) {
		if (ok) {
			if (strcmp(adjust((caddr_t)nl[P_VERSION].n_value),
			    kversion) != 0)
				ok = 1;
		}
		if (!ok) {
			printf("WARNING kernel mismatch. -u ignored.\n");
			printf("WARNING the running kernel version:\n");
			printf("%s", kversion);
		} else
			process_history(histlen, history);
	}

	printf("%s", adjust((caddr_t)nl[P_VERSION].n_value));

	if (config()) {
		if (force == 0 && outfile == NULL) {
			fprintf(stderr, "not forced\n");
			return (1);
		}
		if (outfile == NULL)
			outfile = file;
		if (ukc_mod_kernel == 0) {
			fprintf(stderr, "Kernel not modified\n");
			return (1);
		} else {
			printf ("Saving modified kernel.\n");
			savekernel(outfile);
		}
	}
	return(0);
}

void
init(void)
{
	int i = 0;
	struct cfdata *cd;
	short	*ln;
	int	*p;

	if ((cd = get_cfdata(0)) == NULL)	/* get first item */
		errx(1, "failed to get first cfdata");

	while (cd->cf_attach != 0) {
		maxdev = i;
		totdev = i;

		ln = get_locnamp(cd->cf_locnames);
		while (*ln != -1) {
			if (*ln > maxlocnames)
				maxlocnames = *ln;
			ln++;
		}
		i++;
		cd++;
	}

	while (cd->cf_attach == 0) {
		totdev = i;
		i++;
		cd++;
	}

	totdev = totdev - 1;

	if (nopdev == 0) {
		p = (int *)adjust((caddr_t)nl[I_PDEVSIZE].n_value);
		maxpseudo = *p;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ukc.c,v 1.23 2017/09/27 15:14:52 deraadt Exp $ */
2
3			/*
4			* Copyright (c) 1999-2001 Mats O Jansson. All rights reserved.
5			*
6			* Redistribution and use in source and binary forms, with or without
7			* modification, are permitted provided that the following conditions
8			* are met:
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			* 2. Redistributions in binary form must reproduce the above copyright
12			* notice, this list of conditions and the following disclaimer in the
13			* documentation and/or other materials provided with the distribution.
14			*
15			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25			*/
26
27			#include <sys/types.h>
28			#include <sys/device.h>
29
30			#include <err.h>
31			#include <fcntl.h>
32			#include <kvm.h>
33			#include <limits.h>
34			#include <nlist.h>
35			#include <stdio.h>
36			#include <stdlib.h>
37			#include <string.h>
38			#include <unistd.h>
39
40			#define UKC_MAIN
41			#include "ukc.h"
42			#include "exec.h"
43
44			void init(void);
45			__dead void usage(void);
46
47			int ukc_mod_kernel = 0;
48
49			static void
50			check_int(int idx, const char *name)
51			{
52			if (nl[idx].n_type == 0)
53			printf("WARNING this kernel doesn't support modification "
54			"of %s.\n", name);
55			}
56
57			int
58			ukc(char file, char outfile, int uflag, int force)
59			{
60			int i;
61			kvm_t *kd;
62			char errbuf[_POSIX2_LINE_MAX];
63			int histlen = 0, ok = 1;
64			char history[1024], kversion[1024];
65
66			if (file == NULL) {
67			warnx("no file specified");
68			usage();
69			}
70
71			loadkernel(file);
72
73			if (nlist(file, nl) == -1)
74			errx(1, "nlist: %s", file);
75
76			if (uflag) {
77			if ((kd = kvm_openfiles(NULL,NULL,NULL,O_RDONLY, errbuf)) == 0)
78			errx(1, "kvm_openfiles: %s", errbuf);
79
80			if (kvm_nlist(kd, knl) == -1)
81			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
82
83			i = 0;
84			while (i < NLENTRIES) {
85			if (nl[i].n_type != knl[i].n_type \|\|
86			nl[i].n_desc != knl[i].n_desc \|\|
87			nl[i].n_value != knl[i].n_value)
88			ok = 0;
89			i++;
90			}
91
92			if (knl[I_HISTLEN].n_type != 0 && ok) {
93			if (kvm_read(kd, knl[I_HISTLEN].n_value, &histlen,
94			sizeof(histlen)) != sizeof(histlen))
95			warnx("cannot read %s: %s",
96			knl[I_HISTLEN].n_name,
97			kvm_geterr(kd));
98			}
99			if (knl[CA_HISTORY].n_type != 0 && ok) {
100			if (kvm_read(kd, knl[CA_HISTORY].n_value, history,
101			sizeof(history)) != sizeof(history))
102			warnx("cannot read %s: %s",
103			knl[CA_HISTORY].n_name,
104			kvm_geterr(kd));
105			}
106			if (knl[P_VERSION].n_type != 0 && ok) {
107			if (kvm_read(kd, knl[P_VERSION].n_value, kversion,
108			sizeof(kversion)) != sizeof(kversion))
109			warnx("cannot read %s: %s",
110			knl[P_VERSION].n_name,
111			kvm_geterr(kd));
112			}
113			}
114
115			if (force == 0 && outfile == NULL)
116			printf("WARNING no output file specified\n");
117
118			if (nl[IA_EXTRALOC].n_type == 0 \|\| nl[I_REXTRALOC].n_type == 0 \|\|
119			nl[I_TEXTRALOC].n_type == 0 \|\|
120			nl[I_HISTLEN].n_type == 0 \|\| nl[CA_HISTORY].n_type == 0) {
121			printf("\
122			WARNING this kernel doesn't contain all information needed!\n\
123			WARNING the commands add and change might not work.\n");
124			oldkernel = 1;
125			}
126
127			if (nl[P_PDEVNAMES].n_type == 0 \|\|
128			nl[I_PDEVSIZE].n_type == 0 \|\|
129			nl[S_PDEVINIT].n_type == 0) {
130			printf("\
131			WARNING this kernel doesn't support pseudo devices.\n");
132			nopdev = 1;
133			}
134
135			check_int(I_BUFCACHEPCT, "BUFCACHEPERCENT");
136			check_int(I_NKMEMPG, "NKMEMPAGES");
137
138			init();
139
140			if (uflag) {
141			if (ok) {
142			if (strcmp(adjust((caddr_t)nl[P_VERSION].n_value),
143			kversion) != 0)
144			ok = 1;
145			}
146			if (!ok) {
147			printf("WARNING kernel mismatch. -u ignored.\n");
148			printf("WARNING the running kernel version:\n");
149			printf("%s", kversion);
150			} else
151			process_history(histlen, history);
152			}
153
154			printf("%s", adjust((caddr_t)nl[P_VERSION].n_value));
155
156			if (config()) {
157			if (force == 0 && outfile == NULL) {
158			fprintf(stderr, "not forced\n");
159			return (1);
160			}
161			if (outfile == NULL)
162			outfile = file;
163			if (ukc_mod_kernel == 0) {
164			fprintf(stderr, "Kernel not modified\n");
165			return (1);
166			} else {
167			printf ("Saving modified kernel.\n");
168			savekernel(outfile);
169			}
170			}
171			return(0);
172			}
173
174			void
175			init(void)
176			{
177			int i = 0;
178			struct cfdata *cd;
179			short *ln;
180			int *p;
181
182			if ((cd = get_cfdata(0)) == NULL) /* get first item */
183			errx(1, "failed to get first cfdata");
184
185			while (cd->cf_attach != 0) {
186			maxdev = i;
187			totdev = i;
188
189			ln = get_locnamp(cd->cf_locnames);
190			while (*ln != -1) {
191			if (*ln > maxlocnames)
192			maxlocnames = *ln;
193			ln++;
194			}
195			i++;
196			cd++;
197			}
198
199			while (cd->cf_attach == 0) {
200			totdev = i;
201			i++;
202			cd++;
203			}
204
205			totdev = totdev - 1;
206
207			if (nopdev == 0) {
208			p = (int *)adjust((caddr_t)nl[I_PDEVSIZE].n_value);
209			maxpseudo = *p;
210			}
211			}