Running wic commands on Debian 10 systems fail in
scripts/lib/wic/engine.py:get_partitions() due to new stderr output captured
when trying to parse the output from /sbin/parted as a non-root user.
The parted command calls the dmidecode utility, which produces this error
as a non-root user:
/sys/firmware/dmi/tables/smbios_entry_point: Permission denied
/dev/mem: Permission denied
scripts/lib/wic/engine.py:get_partitions()
calls misc.py:exec_cmd(), a subprocess wrapper which returns a
combined stderr and sdtdout.
These messages to stderr confuse the partition table parser in get_partitions().
This patch has the partition table parser ignore lines before the
expected "BYT;"
header string.
Running wic in Debian 9 does not have this issue.
---
scripts/lib/wic/engine.py | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/scripts/lib/wic/engine.py b/scripts/lib/wic/engine.py
index f0c5ff0aaf..52c9592b33 100644
--- a/scripts/lib/wic/engine.py
+++ b/scripts/lib/wic/engine.py
@@ -266,10 +266,15 @@ class Disk:
out = exec_cmd("%s -sm %s unit B print" % (self.parted,
self.imagepath))
parttype = namedtuple("Part", "pnum start end size fstype")
splitted = out.splitlines()
- lsector_size, psector_size, self._ptable_format =
splitted[1].split(":")[3:6]
+ # skip over possible errors in exec_cmd output
+ try:
+ idx =splitted.index("BYT;")
+ except ValueError:
+ raise WicError("Error getting partition information
from %s" % (self.parted))
+ lsector_size, psector_size, self._ptable_format =
splitted[idx + 1].split(":")[3:6]
self._lsector_size = int(lsector_size)
self._psector_size = int(psector_size)
- for line in splitted[2:]:
+ for line in splitted[idx + 2:]:
pnum, start, end, size, fstype = line.split(':')[:5]
partition = parttype(int(pnum), int(start[:-1]), int(end[:-1]),
int(size[:-1]), fstype)
--
2.19.1
--
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