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32#define FOR_blockdev
33#include "toys.h"
34#include <linux/fs.h>
35
36GLOBALS(
37 long setbsz, setra;
38)
39
40void blockdev_main(void)
41{
42 int cmds[] = {BLKRRPART, BLKFLSBUF, BLKRASET, BLKRAGET, BLKGETSIZE64, BLKGETSIZE, BLKGETSIZE64,
43 BLKBSZSET, BLKBSZGET, BLKSSZGET, BLKROGET, BLKROSET, BLKROSET};
44 char **ss;
45 long long val = 0;
46
47 if (!toys.optflags) help_exit("need --option");
48
49 for (ss = toys.optargs; *ss; ss++) {
50 int fd = xopenro(*ss), i;
51
52
53 for (i = 0; i < 32; i++) {
54 long flag = toys.optflags & (1<<i);
55
56 if (!flag) continue;
57
58 if (flag & FLAG_setbsz) val = TT.setbsz;
59 else val = !!(flag & FLAG_setro);
60
61 if (flag & FLAG_setra) val = TT.setra;
62
63 xioctl(fd, cmds[i], &val);
64
65 flag &= FLAG_setbsz|FLAG_setro|FLAG_flushbufs|FLAG_rereadpt|FLAG_setrw|FLAG_setbsz;
66 if (!flag) printf("%lld\n", (toys.optflags & FLAG_getsz) ? val >> 9: val);
67 }
68 xclose(fd);
69 }
70}
71