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parser: enable variable expansion for mount type= and options=

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Currently mount options type= and options= do not expand variables
but they should. Fix it.

Note: this does not treat either as paths because their use is
too device dependent for it to be safe to filter slashes.

Fixes: https://gitlab.com/apparmor/apparmor/-/issues/99
MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/638
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Steve Beattie <steve.beattie@canonical.com>
(cherry picked from commit 882380ad3d)
Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen 2020-09-01 03:18:58 -07:00
parent 8771cff94b
commit 8b5e4a45a9
1 changed files with 12 additions and 0 deletions
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12
parser/mount.cc
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@ -486,6 +486,7 @@ ostream &mnt_rule::dump(ostream &os)
/* does not currently support expansion of vars in options */
int mnt_rule::expand_variables(void)
{
struct value_list *ent;
int error = 0;
error = expand_entry_variables(&mnt_point);
@ -498,6 +499,17 @@ int mnt_rule::expand_variables(void)
if (error)
return error;
list_for_each(dev_type, ent) {
error = expand_entry_variables(&ent->value);
if (error)
return error;
}
list_for_each(opts, ent) {
error = expand_entry_variables(&ent->value);
if (error)
return error;
}
return 0;
}