10 static void usage(void);
13 main(int argc, char *argv[])
17 uchar buf1[BUF], buf2[BUF];
19 vlong nc = 1, o, l = 1;
21 uchar *b1s, *b1e, *b2s, *b2e;
24 case 's': sflag = 1; break;
25 case 'l': lflag = 1; break;
26 case 'L': Lflag = 1; break;
31 if((f1 = open(name1 = *argv++, OREAD)) == -1){
32 if(!sflag) perror(name1);
35 if((f2 = open(name2 = *argv++, OREAD)) == -1){
36 if(!sflag) perror(name2);
40 o = strtoll(*argv++, 0, 0);
41 if(seek(f1, o, 0) < 0){
42 if(!sflag) perror("cmp: seek by offset1");
47 o = strtoll(*argv++, 0, 0);
48 if(seek(f2, o, 0) < 0){
49 if(!sflag) perror("cmp: seek by offset2");
61 n = read(f1, b1s, &buf1[BUF] - b1s);
67 n = read(f2, b2s, &buf2[BUF] - b2s);
75 if(memcmp((void *)b1s, (void *)b2s, n) != 0){
78 for(p = b1s, q = b2s, i = 0; i < n; p++, q++, i++) {
83 print("%s %s differ: char %lld",
85 print(Lflag?" line %lld\n":"\n", l);
88 print("%6lld 0x%.2x 0x%.2x\n", nc+i, *p, *q);
93 for(p = b1s; p < b1e;)
100 if(b1e - b1s == b2e - b2s)
103 print("EOF on %s\n", (b1e - b1s > b2e - b2s)? name2 : name1);
110 print("Usage: cmp [-lsL] file1 file2 [offset1 [offset2] ]\n");