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nanddump: make dumping read-only partitions work
Make dumping read-only partitions work by opening the device O_RDONLY; otherwise the open() will fail with -EPERM. Signed-off-by: Matt Reimer <mreimer@sdgsystems.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -129,7 +129,7 @@ int nandwrite_main(int argc UNUSED_PARAM, char **argv)
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xmove_fd(tmp_fd, IS_NANDDUMP ? STDOUT_FILENO : STDIN_FILENO);
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}
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fd = xopen(argv[0], O_RDWR);
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fd = xopen(argv[0], IS_NANDWRITE ? O_RDWR : O_RDONLY);
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xioctl(fd, MEMGETINFO, &meminfo);
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mtdoffset = xstrtou(opt_s, 0);
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