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436c24c2 | 1 | /*- |
ad787160 C |
2 | * Copyright (c) 1990, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
436c24c2 | 4 | * |
ad787160 C |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
436c24c2 KB |
32 | */ |
33 | ||
34 | #ifndef lint | |
ad787160 | 35 | static char sccsid[] = "@(#)nlist.c 8.1 (Berkeley) 6/6/93"; |
436c24c2 KB |
36 | #endif /* not lint */ |
37 | ||
38 | #include <sys/param.h> | |
6e74e80d | 39 | |
436c24c2 | 40 | #include <a.out.h> |
573b8d71 | 41 | #include <db.h> |
6e74e80d | 42 | #include <err.h> |
3b06e4c9 | 43 | #include <errno.h> |
6e74e80d | 44 | #include <fcntl.h> |
3b06e4c9 | 45 | #include <kvm.h> |
6e74e80d | 46 | #include <limits.h> |
436c24c2 | 47 | #include <stdio.h> |
3b06e4c9 | 48 | #include <stdlib.h> |
6e74e80d KB |
49 | #include <string.h> |
50 | #include <unistd.h> | |
436c24c2 | 51 | |
13e7db0b KB |
52 | #include "extern.h" |
53 | ||
436c24c2 KB |
54 | typedef struct nlist NLIST; |
55 | #define _strx n_un.n_strx | |
56 | #define _name n_un.n_name | |
57 | ||
6e74e80d KB |
58 | #define badfmt(str) errx(1, "%s: %s: %s", kfile, str, strerror(EFTYPE)) |
59 | ||
13e7db0b | 60 | static void badread __P((int, char *)); |
13e7db0b | 61 | |
436c24c2 KB |
62 | static char *kfile; |
63 | ||
13e7db0b | 64 | void |
436c24c2 KB |
65 | create_knlist(name, db) |
66 | char *name; | |
573b8d71 | 67 | DB *db; |
436c24c2 | 68 | { |
3b06e4c9 | 69 | register int nsyms; |
436c24c2 | 70 | struct exec ebuf; |
3b06e4c9 | 71 | FILE *fp; |
436c24c2 | 72 | NLIST nbuf; |
573b8d71 | 73 | DBT data, key; |
3b06e4c9 KB |
74 | int fd, nr, strsize; |
75 | char *strtab, buf[1024]; | |
436c24c2 | 76 | |
436c24c2 | 77 | kfile = name; |
3b06e4c9 | 78 | if ((fd = open(name, O_RDONLY, 0)) < 0) |
6e74e80d | 79 | err(1, "%s", name); |
436c24c2 | 80 | |
3b06e4c9 | 81 | /* Read in exec structure. */ |
6e74e80d | 82 | nr = read(fd, &ebuf, sizeof(struct exec)); |
3b06e4c9 | 83 | if (nr != sizeof(struct exec)) |
13e7db0b | 84 | badfmt("no exec header"); |
3b06e4c9 KB |
85 | |
86 | /* Check magic number and symbol count. */ | |
436c24c2 KB |
87 | if (N_BADMAG(ebuf)) |
88 | badfmt("bad magic number"); | |
3b06e4c9 | 89 | if (!ebuf.a_syms) |
436c24c2 KB |
90 | badfmt("stripped"); |
91 | ||
3b06e4c9 KB |
92 | /* Seek to string table. */ |
93 | if (lseek(fd, N_STROFF(ebuf), SEEK_SET) == -1) | |
94 | badfmt("corrupted string table"); | |
95 | ||
96 | /* Read in the size of the symbol table. */ | |
97 | nr = read(fd, (char *)&strsize, sizeof(strsize)); | |
98 | if (nr != sizeof(strsize)) | |
99 | badread(nr, "no symbol table"); | |
436c24c2 | 100 | |
3b06e4c9 KB |
101 | /* Read in the string table. */ |
102 | strsize -= sizeof(strsize); | |
6e74e80d KB |
103 | if (!(strtab = malloc(strsize))) |
104 | err(1, NULL); | |
3b06e4c9 KB |
105 | if ((nr = read(fd, strtab, strsize)) != strsize) |
106 | badread(nr, "corrupted symbol table"); | |
436c24c2 | 107 | |
3b06e4c9 KB |
108 | /* Seek to symbol table. */ |
109 | if (!(fp = fdopen(fd, "r"))) | |
6e74e80d | 110 | err(1, "%s", name); |
3b06e4c9 | 111 | if (fseek(fp, N_SYMOFF(ebuf), SEEK_SET) == -1) |
6e74e80d | 112 | err(1, "%s", name); |
3b06e4c9 | 113 | |
573b8d71 KB |
114 | data.data = (u_char *)&nbuf; |
115 | data.size = sizeof(NLIST); | |
436c24c2 | 116 | |
3b06e4c9 KB |
117 | /* Read each symbol and enter it into the database. */ |
118 | nsyms = ebuf.a_syms / sizeof(struct nlist); | |
119 | while (nsyms--) { | |
120 | if (fread((char *)&nbuf, sizeof (NLIST), 1, fp) != 1) { | |
121 | if (feof(fp)) | |
122 | badfmt("corrupted symbol table"); | |
6e74e80d | 123 | err(1, "%s", name); |
436c24c2 | 124 | } |
3b06e4c9 | 125 | if (!nbuf._strx || nbuf.n_type&N_STAB) |
436c24c2 KB |
126 | continue; |
127 | ||
573b8d71 KB |
128 | key.data = (u_char *)strtab + nbuf._strx - sizeof(long); |
129 | key.size = strlen((char *)key.data); | |
6e74e80d KB |
130 | if (db->put(db, &key, &data, 0)) |
131 | err(1, "record enter"); | |
436c24c2 | 132 | |
13e7db0b | 133 | if (strcmp((char *)key.data, VRS_SYM) == 0) { |
40492f4a | 134 | long cur_off, voff; |
13e7db0b KB |
135 | #ifndef KERNTEXTOFF |
136 | #define KERNTEXTOFF KERNBASE | |
436c24c2 KB |
137 | #endif |
138 | /* | |
13e7db0b KB |
139 | * Calculate offset relative to a normal (non-kernel) |
140 | * a.out. KERNTEXTOFF is where the kernel is really | |
141 | * loaded; N_TXTADDR is where a normal file is loaded. | |
142 | * From there, locate file offset in text or data. | |
436c24c2 | 143 | */ |
13e7db0b KB |
144 | voff = nbuf.n_value - KERNTEXTOFF + N_TXTADDR(ebuf); |
145 | if ((nbuf.n_type & N_TYPE) == N_TEXT) | |
146 | voff += N_TXTOFF(ebuf) - N_TXTADDR(ebuf); | |
147 | else | |
148 | voff += N_DATOFF(ebuf) - N_DATADDR(ebuf); | |
3b06e4c9 | 149 | cur_off = ftell(fp); |
13e7db0b | 150 | if (fseek(fp, voff, SEEK_SET) == -1) |
436c24c2 KB |
151 | badfmt("corrupted string table"); |
152 | ||
153 | /* | |
154 | * Read version string up to, and including newline. | |
155 | * This code assumes that a newline terminates the | |
156 | * version line. | |
157 | */ | |
3b06e4c9 | 158 | if (fgets(buf, sizeof(buf), fp) == NULL) |
436c24c2 KB |
159 | badfmt("corrupted string table"); |
160 | ||
573b8d71 KB |
161 | key.data = (u_char *)VRS_KEY; |
162 | key.size = sizeof(VRS_KEY) - 1; | |
163 | data.data = (u_char *)buf; | |
164 | data.size = strlen(buf); | |
6e74e80d KB |
165 | if (db->put(db, &key, &data, 0)) |
166 | err(1, "record enter"); | |
436c24c2 KB |
167 | |
168 | /* Restore to original values. */ | |
573b8d71 KB |
169 | data.data = (u_char *)&nbuf; |
170 | data.size = sizeof(NLIST); | |
3b06e4c9 KB |
171 | if (fseek(fp, cur_off, SEEK_SET) == -1) |
172 | badfmt("corrupted string table"); | |
436c24c2 KB |
173 | } |
174 | } | |
3b06e4c9 KB |
175 | (void)fclose(fp); |
176 | } | |
177 | ||
13e7db0b | 178 | static void |
3b06e4c9 KB |
179 | badread(nr, p) |
180 | int nr; | |
181 | char *p; | |
182 | { | |
183 | if (nr < 0) | |
6e74e80d | 184 | err(1, "%s", kfile); |
3b06e4c9 | 185 | badfmt(p); |
436c24c2 | 186 | } |