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Add support to the jail framework to be able to mount linsysfs(5) and

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linprocfs(5).

Differential Revision:	D2846
Submitted by:		Nikolai Lifanov <lifanov@mail.lifanov.com>
Reviewed by:		jamie
This commit is contained in:
Marcelo Araujo 2015-07-19 08:52:35 +00:00
parent cab0e8ff75
commit f19e47d691
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=285685
5 changed files with 40 additions and 4 deletions
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2
sys/compat/linprocfs/linprocfs.c
View File

@ -1548,7 +1548,7 @@ linprocfs_uninit(PFS_INIT_ARGS)
return (0);
}
PSEUDOFS(linprocfs, 1, 0);
PSEUDOFS(linprocfs, 1, PR_ALLOW_MOUNT_LINPROCFS);
#if defined(__amd64__)
MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1);
#else

2
sys/compat/linsysfs/linsysfs.c
View File

@ -275,7 +275,7 @@ linsysfs_uninit(PFS_INIT_ARGS)
return (0);
}
PSEUDOFS(linsysfs, 1, 0);
PSEUDOFS(linsysfs, 1, PR_ALLOW_MOUNT_LINSYSFS);
#if defined(__amd64__)
MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1);
#else

16
sys/kern/kern_jail.c
View File

@ -205,6 +205,8 @@ static char *pr_allow_names[] = {
"allow.mount.procfs",
"allow.mount.tmpfs",
"allow.mount.fdescfs",
"allow.mount.linprocfs",
"allow.mount.linsysfs",
};
const size_t pr_allow_names_size = sizeof(pr_allow_names);
@ -222,6 +224,8 @@ static char *pr_allow_nonames[] = {
"allow.mount.noprocfs",
"allow.mount.notmpfs",
"allow.mount.nofdescfs",
"allow.mount.nolinprocfs",
"allow.mount.nolinsysfs",
};
const size_t pr_allow_nonames_size = sizeof(pr_allow_nonames);
@ -4290,6 +4294,14 @@ SYSCTL_PROC(_security_jail, OID_AUTO, mount_procfs_allowed,
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
NULL, PR_ALLOW_MOUNT_PROCFS, sysctl_jail_default_allow, "I",
"Processes in jail can mount the procfs file system");
SYSCTL_PROC(_security_jail, OID_AUTO, mount_linprocfs_allowed,
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
NULL, PR_ALLOW_MOUNT_LINPROCFS, sysctl_jail_default_allow, "I",
"Processes in jail can mount the linprocfs file system");
SYSCTL_PROC(_security_jail, OID_AUTO, mount_linsysfs_allowed,
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
NULL, PR_ALLOW_MOUNT_LINSYSFS, sysctl_jail_default_allow, "I",
"Processes in jail can mount the linsysfs file system");
SYSCTL_PROC(_security_jail, OID_AUTO, mount_tmpfs_allowed,
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
NULL, PR_ALLOW_MOUNT_TMPFS, sysctl_jail_default_allow, "I",
@ -4456,6 +4468,10 @@ SYSCTL_JAIL_PARAM(_allow_mount, nullfs, CTLTYPE_INT | CTLFLAG_RW,
"B", "Jail may mount the nullfs file system");
SYSCTL_JAIL_PARAM(_allow_mount, procfs, CTLTYPE_INT | CTLFLAG_RW,
"B", "Jail may mount the procfs file system");
SYSCTL_JAIL_PARAM(_allow_mount, linprocfs, CTLTYPE_INT | CTLFLAG_RW,
"B", "Jail may mount the linprocfs file system");
SYSCTL_JAIL_PARAM(_allow_mount, linsysfs, CTLTYPE_INT | CTLFLAG_RW,
"B", "Jail may mount the linsysfs file system");
SYSCTL_JAIL_PARAM(_allow_mount, tmpfs, CTLTYPE_INT | CTLFLAG_RW,
"B", "Jail may mount the tmpfs file system");
SYSCTL_JAIL_PARAM(_allow_mount, zfs, CTLTYPE_INT | CTLFLAG_RW,

4
sys/sys/jail.h
View File

@ -230,7 +230,9 @@ struct prison_racct {
#define PR_ALLOW_MOUNT_PROCFS 0x0400
#define PR_ALLOW_MOUNT_TMPFS 0x0800
#define PR_ALLOW_MOUNT_FDESCFS 0x1000
#define PR_ALLOW_ALL 0x1fff
#define PR_ALLOW_MOUNT_LINPROCFS 0x2000
#define PR_ALLOW_MOUNT_LINSYSFS 0x4000
#define PR_ALLOW_ALL 0x7fff
/*
* OSD methods

20
usr.sbin/jail/jail.8
View File

@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd February 25, 2015
.Dd July 20, 2015
.Dt JAIL 8
.Os
.Sh NAME
@ -563,6 +563,22 @@ This permission is effective only together with
and only when
.Va enforce_statfs
is set to a value lower than 2.
.It Va allow.mount.linprocfs
privileged users inside the jail will be able to mount and unmount the
linprocfs file system.
This permission is effective only together with
.Va allow.mount
and only when
.Va enforce_statfs
is set to a value lower than 2.
.It Va allow.mount.linsysfs
privileged users inside the jail will be able to mount and unmount the
linsysfs file system.
This permission is effective only together with
.Va allow.mount
and only when
.Va enforce_statfs
is set to a value lower than 2.
.It Va allow.mount.tmpfs
privileged users inside the jail will be able to mount and unmount the
tmpfs file system.
@ -1209,6 +1225,8 @@ environment of the first jail.
.Xr devfs 5 ,
.Xr fdescfs 5 ,
.Xr jail.conf 5 ,
.Xr linprocfs 5 ,
.Xr linsysfs 5 ,
.Xr procfs 5 ,
.Xr rc.conf 5 ,
.Xr sysctl.conf 5 ,