Commit | Line | Data |
---|---|---|
a24c10d4 KT |
1 | /* |
2 | * Convert old to new archive format | |
3 | */ | |
4 | ||
5 | #include <signal.h> | |
6 | #include <ar.h> | |
7 | ||
8 | #define omag 0177555 | |
9 | ||
10 | struct ar_hdr nh; | |
11 | struct | |
12 | { | |
13 | char oname[8]; | |
14 | long odate; | |
15 | char ouid; | |
16 | char omode; | |
17 | unsigned siz; | |
18 | } oh; | |
19 | ||
20 | char *tmp; | |
21 | char *mktemp(); | |
22 | int f; | |
23 | int tf; | |
24 | union { | |
25 | char buf[512]; | |
26 | int magic; | |
27 | } b; | |
28 | ||
29 | main(argc, argv) | |
30 | char *argv[]; | |
31 | { | |
32 | register i; | |
33 | ||
34 | tmp = mktemp("/tmp/arcXXXXX"); | |
35 | for(i=1; i<4; i++) | |
36 | signal(i, SIG_IGN); | |
37 | for(i=1; i<argc; i++) | |
38 | conv(argv[i]); | |
39 | unlink(tmp); | |
40 | } | |
41 | ||
42 | conv(fil) | |
43 | char *fil; | |
44 | { | |
45 | register unsigned i, n; | |
46 | ||
47 | f = open(fil, 2); | |
48 | if(f < 0) { | |
49 | printf("arcv: cannot open %s\n", fil); | |
50 | return; | |
51 | } | |
52 | close(creat(tmp, 0600)); | |
53 | tf = open(tmp, 2); | |
54 | if(tf < 0) { | |
55 | printf("arcv: cannot open temp\n"); | |
56 | close(f); | |
57 | return; | |
58 | } | |
59 | b.magic = 0; | |
60 | read(f, (char *)&b.magic, sizeof(b.magic)); | |
61 | if(b.magic != omag) { | |
62 | printf("arcv: %s not archive format\n", fil); | |
63 | close(tf); | |
64 | close(f); | |
65 | return; | |
66 | } | |
67 | b.magic = ARMAG; | |
68 | write(tf, (char *)&b.magic, sizeof(b.magic)); | |
69 | loop: | |
70 | i = read(f, (char *)&oh, sizeof(oh)); | |
71 | if(i != sizeof(oh)) | |
72 | goto out; | |
73 | for(i=0; i<8; i++) | |
74 | nh.ar_name[i] = oh.oname[i]; | |
75 | nh.ar_size = oh.siz; | |
76 | nh.ar_uid = oh.ouid; | |
77 | nh.ar_gid = 1; | |
78 | nh.ar_mode = 0666; | |
79 | nh.ar_date = oh.odate; | |
80 | n = (oh.siz+1) & ~01; | |
81 | write(tf, (char *)&nh, sizeof(nh)); | |
82 | while(n > 0) { | |
83 | i = 512; | |
84 | if(n < i) | |
85 | i = n; | |
86 | read(f, b.buf, i); | |
87 | write(tf, b.buf, i); | |
88 | n -= i; | |
89 | } | |
90 | goto loop; | |
91 | out: | |
92 | lseek(f, 0L, 0); | |
93 | lseek(tf, 0L, 0); | |
94 | while((i=read(tf, b.buf, 512)) > 0) | |
95 | write(f, b.buf, i); | |
96 | close(f); | |
97 | close(tf); | |
98 | } |