swaplabel: check writing to a file descriptor was successful
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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@ -145,7 +145,10 @@ static int change_info(const char *devname, const char *label, const char *uuid)
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}
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}
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close(fd);
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if (close_fd(fd) != 0) {
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warn(_("write failed: %s"), devname);
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return -1;
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}
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return 0;
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err:
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if (fd >= 0)
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