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Fix sysctl namespace for jail: move the kern.jailcansethostname to

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kern.prison.set_hostname_allowed, off of the kern.prison node.  Future
jail twiddles should be placed in this namespace.
This commit is contained in:
Robert Watson 2000-02-10 18:51:58 +00:00
parent 8f9683e20c
commit 5bdee2c5d5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=57119
3 changed files with 11 additions and 8 deletions
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10
sys/kern/kern_mib.c
View file

@ -145,10 +145,10 @@ static char machine_arch[] = MACHINE_ARCH;
SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
machine_arch, 0, "System architecture");
static int jailcansethostname=1;
SYSCTL_INT(_kern, KERN_JAILCANSETHOSTNAME, jailcansethostname,
CTLFLAG_RW, &jailcansethostname, 0,
"Jail can set its hostname");
static int prison_set_hostname_allowed = 1;
SYSCTL_INT(_kern_prison, OID_AUTO, set_hostname_allowed, CTLFLAG_RW,
&prison_set_hostname_allowed, 0,
"Processes in prison can set their hostnames");
char hostname[MAXHOSTNAMELEN];
@ -158,7 +158,7 @@ sysctl_hostname SYSCTL_HANDLER_ARGS
int error;
if (req->p->p_prison) {
if (!jailcansethostname)
if (!prison_set_hostname_allowed)
return(EPERM);
error = sysctl_handle_string(oidp,
req->p->p_prison->pr_host,

5
sys/sys/jail.h
View file

@ -43,5 +43,10 @@ struct prison {
void *pr_linux;
};
/*
* Sysctl-set variables that determine global jail policy
*/
extern int prison_set_hostname_allowed;
#endif /* !_KERNEL */
#endif /* !_SYS_JAIL_H_ */

4
sys/sys/sysctl.h
View file

@ -260,8 +260,7 @@ void sysctl_unregister_oid(struct sysctl_oid *oidp);
#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
#define KERN_USRSTACK 33 /* int: address of USRSTACK */
#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
#define KERN_JAILCANSETHOSTNAME 35 /* int: jailed p can set hostname */
#define KERN_MAXID 36 /* number of valid kern ids */
#define KERN_MAXID 35 /* number of valid kern ids */
#define CTL_KERN_NAMES { \
{ 0, 0 }, \
@ -299,7 +298,6 @@ void sysctl_unregister_oid(struct sysctl_oid *oidp);
{ "ps_strings", CTLTYPE_INT }, \
{ "usrstack", CTLTYPE_INT }, \
{ "logsigexit", CTLTYPE_INT }, \
{ "jailcansethostname", CTLTYPE_INT }, \
}
/*