Commit | Line | Data |
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9743b07e KT |
1 | #include <ar.h> |
2 | #include <a.out.h> | |
3 | #include <stdio.h> | |
4 | #define MAGIC exp.a_magic | |
5 | #define BADMAG MAGIC!=A_MAGIC1 && MAGIC!=A_MAGIC2 \ | |
6 | && MAGIC!=A_MAGIC3 && MAGIC!=A_MAGIC4 | |
7 | struct ar_hdr arp; | |
8 | struct exec exp; | |
9 | FILE *fi, *fo; | |
10 | long off, oldoff; | |
11 | long ftell(); | |
12 | #define TABSZ 700 | |
13 | struct tab | |
14 | { char cname[8]; | |
15 | long cloc; | |
16 | } tab[TABSZ]; | |
17 | int tnum; | |
18 | int new; | |
19 | char tempnm[] = "__.SYMDEF"; | |
20 | char firstname[17]; | |
21 | long offdelta; | |
22 | ||
23 | main(argc, argv) | |
24 | char **argv; | |
25 | { | |
26 | char buf[256]; | |
27 | ||
28 | --argc; | |
29 | while(argc--) { | |
30 | fi = fopen(*++argv,"r"); | |
31 | if (fi == NULL) { | |
32 | fprintf(stderr, "nm: cannot open %s\n", *argv); | |
33 | continue; | |
34 | } | |
35 | off = sizeof(exp.a_magic); | |
36 | fread((char *)&exp, 1, sizeof(MAGIC), fi); /* get magic no. */ | |
37 | if (MAGIC != ARMAG) | |
38 | { fprintf(stderr, "not archive: %s\n", *argv); | |
39 | continue; | |
40 | } | |
41 | fseek(fi, 0L, 0); | |
42 | new = tnum = 0; | |
43 | if(nextel(fi) == 0) | |
44 | { fclose(fi); | |
45 | continue; | |
46 | } | |
47 | do { | |
48 | long o; | |
49 | register n; | |
50 | struct nlist sym; | |
51 | ||
52 | fread((char *)&exp, 1, sizeof(struct exec), fi); | |
53 | if (BADMAG) /* archive element not in */ | |
54 | continue; /* proper format - skip it */ | |
55 | o = (long)exp.a_text + exp.a_data; | |
56 | if ((exp.a_flag & 01) == 0) | |
57 | o *= 2; | |
58 | fseek(fi, o, 1); | |
59 | n = exp.a_syms / sizeof(struct nlist); | |
60 | if (n == 0) { | |
61 | fprintf(stderr, "nm: %s-- no name list\n", arp.ar_name); | |
62 | continue; | |
63 | } | |
64 | while (--n >= 0) { | |
65 | fread((char *)&sym, 1, sizeof(sym), fi); | |
66 | if ((sym.n_type&N_EXT)==0) | |
67 | continue; | |
68 | switch (sym.n_type&N_TYPE) { | |
69 | ||
70 | case N_UNDF: | |
71 | continue; | |
72 | ||
73 | default: | |
74 | stash(&sym); | |
75 | continue; | |
76 | } | |
77 | } | |
78 | } while(nextel(fi)); | |
79 | new = fixsize(); | |
80 | fclose(fi); | |
81 | fo = fopen(tempnm, "w"); | |
82 | if(fo == NULL) | |
83 | { fprintf(stderr, "can't create temporary\n"); | |
84 | exit(1); | |
85 | } | |
86 | fwrite((char *)tab, tnum, sizeof(struct tab), fo); | |
87 | fclose(fo); | |
88 | if(new) | |
89 | sprintf(buf, "ar rlb %s %s %s\n", firstname, *argv, tempnm); | |
90 | else sprintf(buf, "ar rl %s %s\n", *argv, tempnm); | |
91 | if(system(buf)) | |
92 | fprintf(stderr, "can't execute %s\n", buf); | |
93 | else fixdate(*argv); | |
94 | unlink(tempnm); | |
95 | } | |
96 | exit(0); | |
97 | } | |
98 | ||
99 | nextel(af) | |
100 | FILE *af; | |
101 | { | |
102 | register r; | |
103 | ||
104 | oldoff = off; | |
105 | fseek(af, off, 0); | |
106 | r = fread((char *)&arp, 1, sizeof(struct ar_hdr), af); /* read archive header */ | |
107 | if (r <= 0) | |
108 | return(0); | |
109 | if (arp.ar_size & 1) | |
110 | ++arp.ar_size; | |
111 | off = ftell(af) + arp.ar_size; /* offset to next element */ | |
112 | return(1); | |
113 | } | |
114 | ||
115 | stash(s) struct nlist *s; | |
116 | { int i; | |
117 | if(tnum >= TABSZ) | |
118 | { fprintf(stderr, "symbol table overflow\n"); | |
119 | exit(1); | |
120 | } | |
121 | for(i=0; i<8; i++) | |
122 | tab[tnum].cname[i] = s->n_name[i]; | |
123 | tab[tnum].cloc = oldoff; | |
124 | tnum++; | |
125 | } | |
126 | ||
127 | fixsize() | |
128 | { int i; | |
129 | offdelta = tnum * sizeof(struct tab) + sizeof(arp); | |
130 | off = sizeof(MAGIC); | |
131 | nextel(fi); | |
132 | if(strncmp(arp.ar_name, tempnm, 14) == 0) | |
133 | { new = 0; | |
134 | offdelta -= sizeof(arp) + arp.ar_size; | |
135 | } | |
136 | else | |
137 | { new = 1; | |
138 | strncpy(firstname, arp.ar_name, 14); | |
139 | } | |
140 | for(i=0; i<tnum; i++) | |
141 | tab[i].cloc += offdelta; | |
142 | return(new); | |
143 | } | |
144 | ||
145 | /* patch time */ | |
146 | fixdate(s) char *s; | |
147 | { long timex, time(); | |
148 | int fd; | |
149 | fd = open(s, 1); | |
150 | if(fd < 0) | |
151 | { fprintf(stderr, "can't reopen %s\n", s); | |
152 | return; | |
153 | } | |
154 | timex = time(NULL) + 5; /* should be enough time */ | |
155 | lseek(fd, (long)sizeof(exp.a_magic) + ((char *)&arp.ar_date-(char *)&arp), 0); | |
156 | write(fd, (char *)&timex, sizeof(timex)); | |
157 | close(fd); | |
158 | } |