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Add full SELinux support

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Four new dataset properties have been added to support SELinux.  They
are 'context', 'fscontext', 'defcontext' and 'rootcontext' which map
directly to the context options described in mount(8).  When one of
these properties is set to something other than 'none'.  That string
will be passed verbatim as a mount option for the given context when
the filesystem is mounted.

For example, if you wanted the rootcontext for a filesystem to be set
to 'system_u:object_r:fs_t' you would set the property as follows:

  $ zfs set rootcontext="system_u:object_r:fs_t" storage-pool/media

This will ensure the filesystem is automatically mounted with that
rootcontext.  It is equivalent to manually specifying the rootcontext
with the -o option like this:

  $ zfs mount -o rootcontext=system_u:object_r:fs_t storage-pool/media

By default all four contexts are set to 'none'.  Further information
on SELinux contexts is detailed in mount(8) and selinux(8) man pages.

Signed-off-by: Matthew Thode <prometheanfire@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <ryao@gentoo.org>
Closes #1504
This commit is contained in:
Matthew Thode
2013-12-19 00:24:14 -06:00
committed by Brian Behlendorf
parent d1d7e2689d
commit 11b9ec23b9
10 changed files with 134 additions and 82 deletions
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lib/libspl/include/sys/mntent.h
-2
View File
@@ -47,7 +47,6 @@
#define MNTOPT_AUTO "auto" /* automount */
#define MNTOPT_NOAUTO "noauto" /* do not automount */
#define MNTOPT_CONTEXT "context" /* selinux context */
#define MNTOPT_NOCONTEXT "nocontext" /* No selinux context (zfs-only) */
#define MNTOPT_FSCONTEXT "fscontext" /* selinux fscontext */
#define MNTOPT_DEFCONTEXT "defcontext" /* selinux defcontext */
#define MNTOPT_ROOTCONTEXT "rootcontext" /* selinux rootcontext */
@@ -99,6 +98,5 @@
#define ZS_COMMENT 0x00000000 /* comment */
#define ZS_ZFSUTIL 0x00000001 /* caller is zfs(8) */
#define ZS_NOCONTEXT 0x00000002 /* do not add selinux context */
#endif /* _SYS_MNTENT_H */