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Duplicate the securelevel check from spec_vnops.c here.

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This commit is contained in:
Poul-Henning Kamp 2004-06-19 09:00:53 +00:00
parent a3bfe8fd89
commit fc6c63b477
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=130712
1 changed files with 11 additions and 0 deletions
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11
sys/geom/geom_dev.c
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@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bio.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/disk.h>
@ -160,6 +161,7 @@ g_dev_open(struct cdev *dev, int flags, int fmt, struct thread *td)
g_trace(G_T_ACCESS, "g_dev_open(%s, %d, %d, %p)",
gp->name, flags, fmt, td);
r = flags & FREAD ? 1 : 0;
w = flags & FWRITE ? 1 : 0;
#ifdef notyet
@ -167,6 +169,15 @@ g_dev_open(struct cdev *dev, int flags, int fmt, struct thread *td)
#else
e = 0;
#endif
if (w) {
/*
* When running in very secure mode, do not allow
* opens for writing of any disks.
*/
error = securelevel_ge(td->td_ucred, 2);
if (error)
return (error);
}
g_topology_lock();
if (dev->si_devsw == NULL)
error = ENXIO; /* We were orphaned */