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1 | /*- |
2 | * Copyright (c) 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | */ | |
7 | ||
8 | #ifndef lint | |
573b8d71 | 9 | static char sccsid[] = "@(#)nlist.c 5.3 (Berkeley) %G%"; |
436c24c2 KB |
10 | #endif /* not lint */ |
11 | ||
12 | #include <sys/param.h> | |
573b8d71 | 13 | #include <sys/user.h> |
3b06e4c9 | 14 | #include <fcntl.h> |
436c24c2 | 15 | #include <limits.h> |
436c24c2 | 16 | #include <a.out.h> |
573b8d71 | 17 | #include <db.h> |
3b06e4c9 | 18 | #include <errno.h> |
436c24c2 | 19 | #include <unistd.h> |
3b06e4c9 | 20 | #include <kvm.h> |
436c24c2 | 21 | #include <stdio.h> |
3b06e4c9 KB |
22 | #include <string.h> |
23 | #include <stdlib.h> | |
436c24c2 KB |
24 | |
25 | typedef struct nlist NLIST; | |
26 | #define _strx n_un.n_strx | |
27 | #define _name n_un.n_name | |
28 | ||
436c24c2 KB |
29 | static char *kfile; |
30 | ||
31 | create_knlist(name, db) | |
32 | char *name; | |
573b8d71 | 33 | DB *db; |
436c24c2 | 34 | { |
3b06e4c9 | 35 | register int nsyms; |
436c24c2 | 36 | struct exec ebuf; |
3b06e4c9 | 37 | FILE *fp; |
436c24c2 | 38 | NLIST nbuf; |
573b8d71 | 39 | DBT data, key; |
3b06e4c9 KB |
40 | int fd, nr, strsize; |
41 | char *strtab, buf[1024]; | |
436c24c2 | 42 | |
436c24c2 | 43 | kfile = name; |
3b06e4c9 | 44 | if ((fd = open(name, O_RDONLY, 0)) < 0) |
436c24c2 KB |
45 | error(name); |
46 | ||
3b06e4c9 KB |
47 | /* Read in exec structure. */ |
48 | nr = read(fd, (char *)&ebuf, sizeof(struct exec)); | |
49 | if (nr != sizeof(struct exec)) | |
50 | badfmt(nr, "no exec header"); | |
51 | ||
52 | /* Check magic number and symbol count. */ | |
436c24c2 KB |
53 | if (N_BADMAG(ebuf)) |
54 | badfmt("bad magic number"); | |
3b06e4c9 | 55 | if (!ebuf.a_syms) |
436c24c2 KB |
56 | badfmt("stripped"); |
57 | ||
3b06e4c9 KB |
58 | /* Seek to string table. */ |
59 | if (lseek(fd, N_STROFF(ebuf), SEEK_SET) == -1) | |
60 | badfmt("corrupted string table"); | |
61 | ||
62 | /* Read in the size of the symbol table. */ | |
63 | nr = read(fd, (char *)&strsize, sizeof(strsize)); | |
64 | if (nr != sizeof(strsize)) | |
65 | badread(nr, "no symbol table"); | |
436c24c2 | 66 | |
3b06e4c9 KB |
67 | /* Read in the string table. */ |
68 | strsize -= sizeof(strsize); | |
69 | if (!(strtab = (char *)malloc(strsize))) | |
70 | error(name); | |
71 | if ((nr = read(fd, strtab, strsize)) != strsize) | |
72 | badread(nr, "corrupted symbol table"); | |
436c24c2 | 73 | |
3b06e4c9 KB |
74 | /* Seek to symbol table. */ |
75 | if (!(fp = fdopen(fd, "r"))) | |
76 | error(name); | |
77 | if (fseek(fp, N_SYMOFF(ebuf), SEEK_SET) == -1) | |
78 | error(name); | |
79 | ||
573b8d71 KB |
80 | data.data = (u_char *)&nbuf; |
81 | data.size = sizeof(NLIST); | |
436c24c2 | 82 | |
3b06e4c9 KB |
83 | /* Read each symbol and enter it into the database. */ |
84 | nsyms = ebuf.a_syms / sizeof(struct nlist); | |
85 | while (nsyms--) { | |
86 | if (fread((char *)&nbuf, sizeof (NLIST), 1, fp) != 1) { | |
87 | if (feof(fp)) | |
88 | badfmt("corrupted symbol table"); | |
89 | error(name); | |
436c24c2 | 90 | } |
3b06e4c9 | 91 | if (!nbuf._strx || nbuf.n_type&N_STAB) |
436c24c2 KB |
92 | continue; |
93 | ||
573b8d71 KB |
94 | key.data = (u_char *)strtab + nbuf._strx - sizeof(long); |
95 | key.size = strlen((char *)key.data); | |
96 | if ((db->put)(db, &key, &data, 0)) | |
97 | error("put"); | |
436c24c2 | 98 | |
573b8d71 | 99 | if (!strncmp((char *)key.data, VRS_SYM, sizeof(VRS_SYM) - 1)) { |
3b06e4c9 KB |
100 | off_t cur_off, rel_off, vers_off; |
101 | ||
436c24c2 KB |
102 | /* Offset relative to start of text image in VM. */ |
103 | #ifdef hp300 | |
104 | rel_off = nbuf.n_value; | |
105 | #endif | |
106 | #ifdef tahoe | |
107 | /* | |
108 | * On tahoe, first 0x800 is reserved for communication | |
109 | * with the console processor. | |
110 | */ | |
111 | rel_off = ((nbuf.n_value & ~KERNBASE) - 0x800); | |
112 | #endif | |
113 | #ifdef vax | |
114 | rel_off = nbuf.n_value & ~KERNBASE; | |
115 | #endif | |
116 | /* | |
117 | * When loaded, data is rounded to next page cluster | |
118 | * after text, but not in file. | |
119 | */ | |
120 | rel_off -= CLBYTES - (ebuf.a_text % CLBYTES); | |
121 | vers_off = N_TXTOFF(ebuf) + rel_off; | |
3b06e4c9 KB |
122 | |
123 | cur_off = ftell(fp); | |
124 | if (fseek(fp, vers_off, SEEK_SET) == -1) | |
436c24c2 KB |
125 | badfmt("corrupted string table"); |
126 | ||
127 | /* | |
128 | * Read version string up to, and including newline. | |
129 | * This code assumes that a newline terminates the | |
130 | * version line. | |
131 | */ | |
3b06e4c9 | 132 | if (fgets(buf, sizeof(buf), fp) == NULL) |
436c24c2 KB |
133 | badfmt("corrupted string table"); |
134 | ||
573b8d71 KB |
135 | key.data = (u_char *)VRS_KEY; |
136 | key.size = sizeof(VRS_KEY) - 1; | |
137 | data.data = (u_char *)buf; | |
138 | data.size = strlen(buf); | |
139 | if ((db->put)(db, &key, &data, 0)) | |
140 | error("put"); | |
436c24c2 KB |
141 | |
142 | /* Restore to original values. */ | |
573b8d71 KB |
143 | data.data = (u_char *)&nbuf; |
144 | data.size = sizeof(NLIST); | |
3b06e4c9 KB |
145 | if (fseek(fp, cur_off, SEEK_SET) == -1) |
146 | badfmt("corrupted string table"); | |
436c24c2 KB |
147 | } |
148 | } | |
3b06e4c9 KB |
149 | (void)fclose(fp); |
150 | } | |
151 | ||
152 | badread(nr, p) | |
153 | int nr; | |
154 | char *p; | |
155 | { | |
156 | if (nr < 0) | |
157 | error(kfile); | |
158 | badfmt(p); | |
436c24c2 KB |
159 | } |
160 | ||
161 | badfmt(p) | |
3b06e4c9 | 162 | char *p; |
436c24c2 KB |
163 | { |
164 | (void)fprintf(stderr, | |
165 | "symorder: %s: %s: %s\n", kfile, p, strerror(EFTYPE)); | |
166 | exit(1); | |
167 | } |