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unpackfs: check for supported filesystems

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Use /proc/filesystems to check if the system
supportes the given source filesystem.
This commit is contained in:
Daniel Hillenbrand 2014-08-19 19:52:26 +02:00
parent 148a29d506
commit c97251d741
1 changed files with 21 additions and 2 deletions
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23
src/modules/unpackfs/main.py
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@ -177,6 +177,8 @@ def run():
# sourcefs: "squashfs"
# destination: ""
PATH_PROCFS = '/proc/filesystems'
root_mount_point = globalstorage.value("rootMountPoint")
if not root_mount_point:
return ("No mount point for root partition in globalstorage",
@ -192,14 +194,31 @@ def run():
source = os.path.abspath(entry["source"])
sourcefs = entry["sourcefs"]
if sourcefs not in ["ext4", "squashfs"]:
# Get supported filesystems
fs_is_supported = False
if os.path.isfile(PATH_PROCFS) and os.access(PATH_PROCFS, os.R_OK):
procfile = open(PATH_PROCFS, 'r')
filesystems = procfile.read()
procfile.close
filesystems = filesystems.replace("nodev", "")
filesystems = filesystems.replace("\t", "")
filesystems = filesystems.splitlines()
# Check if the source filesystem is supported
for fs in filesystems:
if fs == sourcefs:
fs_is_supported = True
if fs_is_supported == False:
return "Bad filesystem", "sourcefs=\"{}\"".format(sourcefs)
destination = os.path.abspath(root_mount_point + entry["destination"])
if not os.path.isfile(source):
return ("Bad source", "source=\"{}\"".format(source))
# Add test for supported filesystems
if not os.path.isdir(destination):
return ("Bad destination",
"destination=\"{}\"".format(destination))