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Make udev rules more robust #78

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Make udev rules more robust #78

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0cae942
dmsetup: return non-zero on stdio I/O error
DemiMarie Apr 1, 2022
bedc445
Disable lvm2 udev rules if `dmsetup splitname` fails
DemiMarie Apr 1, 2022
45f8689
Disable udev rules if udev flags can't be obtained
DemiMarie Apr 1, 2022
b9ad503
Drop support for very old kernels
DemiMarie Apr 1, 2022
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dmsetup: return non-zero on stdio I/O error 
If there is an I/O error on stdout or stderr, return a non-zero status
so that udev can avoid trusting the values printed.
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@DemiMarie
DemiMarie committed Apr 3, 2022
commit 0cae9428b866e558c5199f0dd7b3e88dcd96e646
4 changes: 4 additions & 0 deletions libdm/dm-tools/dmsetup.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7505,5 +7505,9 @@ int main(int argc, char **argv)
if (_initial_timestamp)
dm_timestamp_destroy(_initial_timestamp);

fflush(stdout);
fflush(stderr);
if (ferror(stdout) || ferror(stderr))
return 1;
return (_switches[HELP_ARG] || _switches[VERSION_ARG]) ? 0 : ret;
}