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Extended comment on why we consider a partition relabel request of "0" to

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be a no-op request, and why this might have to change if we want to allow
leaving a partition someday.

Obtained from:	TrustedBSD Project
MFC after:	3 days
This commit is contained in:
Robert Watson 2008-10-28 09:16:34 +00:00
parent 6c6c03be2d
commit 048e2d5899
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=184402
1 changed files with 7 additions and 1 deletions
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8
sys/security/mac_partition/mac_partition.c
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@ -114,7 +114,13 @@ partition_cred_check_relabel(struct ucred *cred, struct label *newlabel)
error = 0;
/* Treat "0" as a no-op request. */
/*
* Treat "0" as a no-op request because it reflects an unset
* partition label. If we ever want to support switching back to an
* unpartitioned state for a process, we'll need to differentiate the
* "not in a partition" and "no partition defined during internalize"
* conditions.
*/
if (SLOT(newlabel) != 0) {
/*
* Require BSD privilege in order to change the partition.