44 lines
703 B
C
44 lines
703 B
C
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#include <stdio.h>
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#include <fcntl.h>
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int fd;
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struct sun_magic {
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unsigned int a_dynamic:1;
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unsigned int a_toolversion:7;
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unsigned char a_machtype;
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#define SUN_MID_SPARC 3
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unsigned short a_magic;
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} sm;
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if (argc != 2) {
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fprintf(stderr, "Usage: fixhdr <bootfile>\n");
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exit(1);
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}
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if ((fd = open(argv[1], O_RDWR, 0)) < 0) {
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perror("open");
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exit(1);
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}
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if (read(fd, &sm, sizeof(sm)) != sizeof(sm)) {
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perror("read");
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exit(1);
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}
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sm.a_dynamic = 0;
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sm.a_toolversion = 1;
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sm.a_machtype = SUN_MID_SPARC;
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lseek(fd, 0, 0);
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if (write(fd, &sm, sizeof(sm)) != sizeof(sm)) {
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perror("write");
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exit(1);
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}
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(void)close(fd);
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return 0;
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}
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