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fstools: add in filetrans for /run dir 

the blkid tool writes to /run/blkid/. This creates the "fstools_run_t"
type an allows the transition in /run.

type=AVC msg=audit(1428929528.885:149519): avc:  denied  { write } for pid=5590 comm="mkfs.ext4" name="/" dev="tmpfs" ino=17656 scontext=staff_u:sysadm_r:fsadm_t tcontext=system_u:object_r:var_run_t tclass=dir permissive=0

In permissive:
type=AVC msg=audit(1428948565.919:160149): avc:  denied  { write } for  pid=26197 comm="mkfs.ext4" name="/" dev="tmpfs" ino=17656 scontext=staff_u:sysadm_r:fsadm_t tcontext=system_u:object_r:var_run_t tclass=dir permissive=1
type=AVC msg=audit(1428948565.919:160149): avc:  denied  { add_name } for  pid=26197 comm="mkfs.ext4" name="blkid" scontext=staff_u:sysadm_r:fsadm_t tcontext=system_u:object_r:var_run_t tclass=dir permissive=1
type=AVC msg=audit(1428948565.919:160149): avc:  denied  { create } for  pid=26197 comm="mkfs.ext4" name="blkid" scontext=staff_u:sysadm_r:fsadm_t tcontext=staff_u:object_r:var_run_t tclass=dir permissive=1
type=SYSCALL msg=audit(1428948565.919:160149): arch=c000003e syscall=83 success=yes exit=0 a0=2cd79c6d214 a1=1ed a2=ffffffffffffff20 a3=539fe9bc40 items=2 ppid=28115 pid=26197 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts2 ses=2 comm="mkfs.ext4" exe="/sbin/mke2fs" subj=staff_u:sysadm_r:fsadm_t key=(null)
type=CWD msg=audit(1428948565.919:160149):  cwd="/root/selinux"
type=PATH msg=audit(1428948565.919:160149): item=0 name="/run/" inode=17656 dev=00:13 mode=040755 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:var_run_t nametype=PARENT
type=PATH msg=audit(1428948565.919:160149): item=1 name="/run/blkid" inode=4062404 dev=00:13 mode=040755 ouid=0 ogid=0 rdev=00:00 obj=staff_u:object_r:var_run_t nametype=CREATE
type=UNKNOWN[1327] msg=audit(1428948565.919:160149): proctitle=6D6B66732E65787434002F6465762F7A72616D31
type=AVC msg=audit(1428948565.919:160150): avc:  denied  { write } for  pid=26197 comm="mkfs.ext4" name="blkid" dev="tmpfs" ino=4062404 scontext=staff_u:sysadm_r:fsadm_t tcontext=staff_u:object_r:var_run_t tclass=dir permissive=1
type=AVC msg=audit(1428948565.919:160150): avc:  denied  { add_name } for  pid=26197 comm="mkfs.ext4" name="blkid.tab" scontext=staff_u:sysadm_r:fsadm_t tcontext=staff_u:object_r:var_run_t tclass=dir permissive=1
type=AVC msg=audit(1428948565.919:160150): avc:  denied  { create } for  pid=26197 comm="mkfs.ext4" name="blkid.tab" scontext=staff_u:sysadm_r:fsadm_t tcontext=staff_u:object_r:var_run_t tclass=file permissive=1
type=AVC msg=audit(1428948565.919:160150): avc:  denied  { write open } for  pid=26197 comm="mkfs.ext4" path="/run/blkid/blkid.tab" dev="tmpfs" ino=4062405 scontext=staff_u:sysadm_r:fsadm_t tcontext=staff_u:object_r:var_run_t tclass=file permissive=1
type=AVC msg=audit(1428948565.919:160151): avc:  denied  { getattr } for  pid=26197 comm="mkfs.ext4" path="/run/blkid/blkid.tab" dev="tmpfs" ino=4062405 scontext=staff_u:sysadm_r:fsadm_t tcontext=staff_u:object_r:var_run_t tclass=file permissive=1

Changes from v1:
- only transition on dir, not file.
- add fcontext for /run/fsck too.
- the audit log in the previous version was missing some lines.
This commit is contained in:
Jason Zaman 2015-04-13 22:13:39 +04:00 committed by Chris PeBenito
parent 600f71a2d9
commit 9cf1886c68
2 changed files with 10 additions and 0 deletions
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3
policy/modules/system/fstools.fc
View File

@ -62,3 +62,6 @@
/usr/sbin/smartctl -- gen_context(system_u:object_r:fsadm_exec_t,s0)
/var/log/fsck(/.*)? gen_context(system_u:object_r:fsadm_log_t,s0)
/var/run/blkid(/.*)? gen_context(system_u:object_r:fsadm_run_t,s0)
/var/run/fsck(/.*)? gen_context(system_u:object_r:fsadm_run_t,s0)

7
policy/modules/system/fstools.te
View File

@ -16,6 +16,9 @@ logging_log_file(fsadm_log_t)
type fsadm_tmp_t;
files_tmp_file(fsadm_tmp_t)
type fsadm_run_t;
files_pid_file(fsadm_run_t)
type swapfile_t; # customizable
files_type(swapfile_t)
@ -45,6 +48,10 @@ allow fsadm_t fsadm_tmp_t:dir manage_dir_perms;
allow fsadm_t fsadm_tmp_t:file manage_file_perms;
files_tmp_filetrans(fsadm_t, fsadm_tmp_t, { file dir })
allow fsadm_t fsadm_run_t:dir manage_dir_perms;
allow fsadm_t fsadm_run_t:file manage_file_perms;
files_pid_filetrans(fsadm_t, fsadm_run_t, dir)
# log files
allow fsadm_t fsadm_log_t:dir setattr;
manage_files_pattern(fsadm_t, fsadm_log_t, fsadm_log_t)