d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove the iskmemdev() function. Make it the responsibility of the mem.c

Browse Source 
drivers to enforce the securelevel checks.
This commit is contained in:
Poul-Henning Kamp 1999-11-07 12:01:32 +00:00
parent f6b7df4bbf
commit be8479a836
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=52967
8 changed files with 18 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
sys/alpha/alpha/mem.c
View File

@ -123,6 +123,11 @@ mmopen(dev, flags, fmt, p)
{
switch (minor(dev)) {
case 0:
case 1:
if (securelevel >= 1)
return (EPERM);
break;
case 32:
#ifdef PERFMON
return perfmon_open(dev, flags, fmt, p);
@ -367,23 +372,6 @@ mmpoll(dev, events, p)
}
}
/*
* Routine that identifies /dev/mem and /dev/kmem.
*
* A minimal stub routine can always return 0.
*/
int
iskmemdev(dev)
dev_t dev;
{
return (((major(dev) == mem_cdevsw.d_maj)
&& (minor(dev) == 0 || minor(dev) == 1))
/* or the osf/1 mem device */
||((major(dev) == 0)
&& (minor(dev) == 0x00200002)));
}
int
iszerodev(dev)
dev_t dev;

19
sys/amd64/amd64/mem.c
View File

@ -111,6 +111,11 @@ mmclose(dev, flags, fmt, p)
struct proc *p;
{
switch (minor(dev)) {
case 0:
case 1:
if (securelevel >= 1)
return (EPERM);
break;
case 14:
curproc->p_md.md_regs->tf_eflags &= ~PSL_IOPL;
break;
@ -527,20 +532,6 @@ mmpoll(dev, events, p)
}
}
/*
* Routine that identifies /dev/mem and /dev/kmem.
*
* A minimal stub routine can always return 0.
*/
int
iskmemdev(dev)
dev_t dev;
{
return ((major(dev) == mem_cdevsw.d_maj)
&& (minor(dev) == 0 || minor(dev) == 1));
}
int
iszerodev(dev)
dev_t dev;

4
sys/fs/specfs/spec_vnops.c
View File

@ -176,7 +176,7 @@ spec_open(ap)
return (EPERM);
/*
* When running in secure mode, do not allow opens
* for writing of /dev/mem, /dev/kmem, or character
* for writing of character
* devices whose corresponding block devices are
* currently mounted.
*/
@ -186,8 +186,6 @@ spec_open(ap)
bvp->v_usecount > 0 &&
(error = vfs_mountedon(bvp)))
return (error);
if (iskmemdev(dev))
return (EPERM);
}
}
if ((dsw->d_flags & D_TYPEMASK) == D_TTY)

19
sys/i386/i386/mem.c
View File

@ -111,6 +111,11 @@ mmclose(dev, flags, fmt, p)
struct proc *p;
{
switch (minor(dev)) {
case 0:
case 1:
if (securelevel >= 1)
return (EPERM);
break;
case 14:
curproc->p_md.md_regs->tf_eflags &= ~PSL_IOPL;
break;
@ -527,20 +532,6 @@ mmpoll(dev, events, p)
}
}
/*
* Routine that identifies /dev/mem and /dev/kmem.
*
* A minimal stub routine can always return 0.
*/
int
iskmemdev(dev)
dev_t dev;
{
return ((major(dev) == mem_cdevsw.d_maj)
&& (minor(dev) == 0 || minor(dev) == 1));
}
int
iszerodev(dev)
dev_t dev;

4
sys/miscfs/devfs/devfs_vnops.c
View File

@ -1353,7 +1353,7 @@ devfs_open( struct vop_open_args *ap)
return (EPERM);
/*
* When running in secure mode, do not allow opens
* for writing of /dev/mem, /dev/kmem, or character
* for writing of character
* devices whose corresponding block devices are
* currently mounted.
*/
@ -1363,8 +1363,6 @@ devfs_open( struct vop_open_args *ap)
bvp->v_usecount > 0 &&
(error = vfs_mountedon(bvp)))
return (error);
if (iskmemdev(dev))
return (EPERM);
}
}
if ((dsw->d_flags & D_TYPEMASK) == D_TTY)

4
sys/miscfs/specfs/spec_vnops.c
View File

@ -176,7 +176,7 @@ spec_open(ap)
return (EPERM);
/*
* When running in secure mode, do not allow opens
* for writing of /dev/mem, /dev/kmem, or character
* for writing of character
* devices whose corresponding block devices are
* currently mounted.
*/
@ -186,8 +186,6 @@ spec_open(ap)
bvp->v_usecount > 0 &&
(error = vfs_mountedon(bvp)))
return (error);
if (iskmemdev(dev))
return (EPERM);
}
}
if ((dsw->d_flags & D_TYPEMASK) == D_TTY)

1
sys/sys/conf.h
View File

@ -266,7 +266,6 @@ struct cdevsw *devsw __P((dev_t dev));
int devsw_module_handler __P((struct module *mod, int what, void *arg));
const char *devtoname __P((dev_t dev));
void freedev __P((dev_t dev));
int iskmemdev __P((dev_t dev));
int iszerodev __P((dev_t dev));
dev_t makebdev __P((int maj, int min));
dev_t make_dev __P((struct cdevsw *devsw, int minor, uid_t uid, gid_t gid, int perms, char *fmt, ...)) __printflike(6, 7);

1
sys/sys/linedisc.h
View File

@ -266,7 +266,6 @@ struct cdevsw *devsw __P((dev_t dev));
int devsw_module_handler __P((struct module *mod, int what, void *arg));
const char *devtoname __P((dev_t dev));
void freedev __P((dev_t dev));
int iskmemdev __P((dev_t dev));
int iszerodev __P((dev_t dev));
dev_t makebdev __P((int maj, int min));
dev_t make_dev __P((struct cdevsw *devsw, int minor, uid_t uid, gid_t gid, int perms, char *fmt, ...)) __printflike(6, 7);