Date: Thu, 16 Aug 2018 18:40:17 +0000 (UTC) From: Jamie Gritton <jamie@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r337922 - in head: lib/libc/gen lib/libc/sys share/man/man9 sys/cddl/contrib/opensolaris/uts/common/fs/zfs sys/compat/freebsd32 sys/fs/nandfs sys/kern sys/sys sys/ufs/ufs Message-ID: <201808161840.w7GIeHGl045096@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: jamie Date: Thu Aug 16 18:40:16 2018 New Revision: 337922 URL: https://svnweb.freebsd.org/changeset/base/337922 Log: Put jail(2) under COMPAT_FREEBSD11. It has been the "old" way of creating jails since FreeBSD 7. Along with the system call, put the various security.jail.allow_foo and security.jail.foo_allowed sysctls partly under COMPAT_FREEBSD11 (or BURN_BRIDGES). These sysctls had two disparate uses: on the system side, they were global permissions for jails created via jail(2) which lacked fine-grained permission controls; inside a jail, they're read-only descriptions of what the current jail is allowed to do. The first use is obsolete along with jail(2), but keep them for the second-read-only use. Differential Revision: D14791 Modified: head/lib/libc/gen/getvfsbyname.3 head/lib/libc/sys/jail.2 head/share/man/man9/VFS_SET.9 head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c head/sys/compat/freebsd32/freebsd32_misc.c head/sys/compat/freebsd32/freebsd32_proto.h head/sys/compat/freebsd32/freebsd32_syscall.h head/sys/compat/freebsd32/freebsd32_syscalls.c head/sys/compat/freebsd32/freebsd32_sysent.c head/sys/compat/freebsd32/freebsd32_systrace_args.c head/sys/compat/freebsd32/syscalls.master head/sys/fs/nandfs/nandfs_vnops.c head/sys/kern/init_sysent.c head/sys/kern/kern_jail.c head/sys/kern/syscalls.c head/sys/kern/syscalls.master head/sys/kern/systrace_args.c head/sys/sys/jail.h head/sys/sys/syscall.h head/sys/sys/syscall.mk head/sys/sys/syscallsubr.h head/sys/sys/sysproto.h head/sys/ufs/ufs/ufs_vnops.c Modified: head/lib/libc/gen/getvfsbyname.3 ============================================================================== --- head/lib/libc/gen/getvfsbyname.3 Thu Aug 16 18:37:47 2018 (r337921) +++ head/lib/libc/gen/getvfsbyname.3 Thu Aug 16 18:40:16 2018 (r337922) @@ -28,7 +28,7 @@ .\" @(#)kvm_getvfsbyname.3 8.3 (Berkeley) 5/4/95 .\" $FreeBSD$ .\" -.Dd August 30, 2016 +.Dd August 16, 2018 .Dt GETVFSBYNAME 3 .Os .Sh NAME @@ -83,9 +83,10 @@ aliases some other mounted FS stores file names as Unicode .It Dv VFCF_JAIL can be mounted from within a jail if -.Va security.jail.mount_allowed -sysctl is set to -.Dv 1 +.Va allow.mount +and +.Va allow.mount.<vfc_name> +jail parameters are set .It Dv VFCF_DELEGADMIN supports delegated administration if .Va vfs.usermount Modified: head/lib/libc/sys/jail.2 ============================================================================== --- head/lib/libc/sys/jail.2 Thu Aug 16 18:37:47 2018 (r337921) +++ head/lib/libc/sys/jail.2 Thu Aug 16 18:40:16 2018 (r337922) @@ -25,11 +25,10 @@ .\" .\" $FreeBSD$ .\" -.Dd February 8, 2012 +.Dd August 16, 2018 .Dt JAIL 2 .Os .Sh NAME -.Nm jail , .Nm jail_get , .Nm jail_set , .Nm jail_remove , @@ -41,8 +40,6 @@ .In sys/param.h .In sys/jail.h .Ft int -.Fn jail "struct jail *jail" -.Ft int .Fn jail_attach "int jid" .Ft int .Fn jail_remove "int jid" @@ -53,74 +50,7 @@ .Fn jail_set "struct iovec *iov" "u_int niov" "int flags" .Sh DESCRIPTION The -.Fn jail -system call sets up a jail and locks the current process in it. -.Pp -The argument is a pointer to a structure describing the prison: -.Bd -literal -offset indent -struct jail { - uint32_t version; - char *path; - char *hostname; - char *jailname; - unsigned int ip4s; - unsigned int ip6s; - struct in_addr *ip4; - struct in6_addr *ip6; -}; -.Ed -.Pp -.Dq Li version -defines the version of the API in use. -.Dv JAIL_API_VERSION -is defined for the current version. -.Pp -The -.Dq Li path -pointer should be set to the directory which is to be the root of the -prison. -.Pp -The -.Dq Li hostname -pointer can be set to the hostname of the prison. -This can be changed -from the inside of the prison. -.Pp -The -.Dq Li jailname -pointer is an optional name that can be assigned to the jail -for example for management purposes. -.Pp -The -.Dq Li ip4s -and -.Dq Li ip6s -give the numbers of IPv4 and IPv6 addresses that will be passed -via their respective pointers. -.Pp -The -.Dq Li ip4 -and -.Dq Li ip6 -pointers can be set to an arrays of IPv4 and IPv6 addresses to be assigned to -the prison, or NULL if none. -IPv4 addresses must be in network byte order. -.Pp -This is equivalent to, and deprecated in favor of, the .Fn jail_set -system call (see below), with the parameters -.Va path , -.Va host.hostname , -.Va name , -.Va ip4.addr , -and -.Va ip6.addr , -and with the -.Dv JAIL_ATTACH -flag. -.Pp -The -.Fn jail_set system call creates a new jail, or modifies an existing one, and optionally locks the current process in it. Jail parameters are passed as an array of name-value pairs in the array @@ -146,13 +76,19 @@ The current set of available parameters, and their for retrieved via the .Va security.jail.param sysctl MIB entry. -Notable parameters include those mentioned in the -.Fn jail -description above, as well as +Notable parameters include .Va jid and -.Va name , -which identify the jail being created or modified. +.Va name +which identify the jail being created or modified, +.Va path +(the root directory of the jail), +.Va host.hostname +(the hostname of the jail), and +.Va ip4.addr +and +.Va ip6.addr +(IP addresses to assign to the jail). See .Xr jail 8 for more information on the core jail parameters. @@ -237,8 +173,7 @@ It will kill all processes belonging to the jail, and of that jail. .Sh RETURN VALUES If successful, -.Fn jail , -.Fn jail_set , +.Fn jail_set and .Fn jail_get return a non-negative integer, termed the jail identifier (JID). @@ -249,25 +184,6 @@ to indicate the error. .Rv -std jail_attach jail_remove .Sh ERRORS The -.Fn jail -system call -will fail if: -.Bl -tag -width Er -.It Bq Er EPERM -This process is not allowed to create a jail, either because it is not -the super-user, or because it would exceed the jail's -.Va children.max -limit. -.It Bq Er EFAULT -.Fa jail -points to an address outside the allocated address space of the process. -.It Bq Er EINVAL -The version number of the argument is not correct. -.It Bq Er EAGAIN -No free JID could be found. -.El -.Pp -The .Fn jail_set system call will fail if: @@ -371,8 +287,7 @@ does not exist. .El .Pp Further -.Fn jail , -.Fn jail_set , +.Fn jail_set and .Fn jail_attach call @@ -386,7 +301,7 @@ manual page for details. .Xr chroot 2 , .Xr jail 8 .Sh HISTORY -The +The now-deprecated .Fn jail system call appeared in .Fx 4.0 . Modified: head/share/man/man9/VFS_SET.9 ============================================================================== --- head/share/man/man9/VFS_SET.9 Thu Aug 16 18:37:47 2018 (r337921) +++ head/share/man/man9/VFS_SET.9 Thu Aug 16 18:40:16 2018 (r337922) @@ -26,7 +26,7 @@ .\" .\" $FreeBSD$ .\" -.Dd February 21, 2013 +.Dd August 16, 2018 .Dt VFS_SET 9 .Os .Sh NAME @@ -72,9 +72,10 @@ Loopback file system layer. File names are stored as Unicode. .It Dv VFCF_JAIL Can be mounted from within a jail if -.Va security.jail.mount_allowed -sysctl is set to -.Dv 1 . +.Va allow.mount +and +.Va allow.mount.<fsname> +jail parameters are set. .It Dv VFCF_DELEGADMIN Supports delegated administration if .Va vfs.usermount Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Thu Aug 16 18:40:16 2018 (r337922) @@ -5195,9 +5195,8 @@ zfs_freebsd_setattr(ap) * Privileged non-jail processes may not modify system flags * if securelevel > 0 and any existing system flags are set. * Privileged jail processes behave like privileged non-jail - * processes if the security.jail.chflags_allowed sysctl is - * is non-zero; otherwise, they behave like unprivileged - * processes. + * processes if the PR_ALLOW_CHFLAGS permission bit is set; + * otherwise, they behave like unprivileged processes. */ if (secpolicy_fs_owner(vp->v_mount, cred) == 0 || priv_check_cred(cred, PRIV_VFS_SYSFLAGS, 0) == 0) { Modified: head/sys/compat/freebsd32/freebsd32_misc.c ============================================================================== --- head/sys/compat/freebsd32/freebsd32_misc.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/freebsd32_misc.c Thu Aug 16 18:40:16 2018 (r337922) @@ -2289,8 +2289,10 @@ freebsd32_sysctl(struct thread *td, struct freebsd32_s return (0); } +#ifdef COMPAT_FREEBSD11 int -freebsd32_jail(struct thread *td, struct freebsd32_jail_args *uap) +freebsd11_freebsd32_jail(struct thread *td, + struct freebsd11_freebsd32_jail_args *uap) { uint32_t version; int error; @@ -2347,8 +2349,9 @@ freebsd32_jail(struct thread *td, struct freebsd32_jai /* Sci-Fi jails are not supported, sorry. */ return (EINVAL); } - return (kern_jail(td, &j)); + return (freebsd11_kern_jail(td, &j)); } +#endif /* COMPAT_FREEBSD11 */ int freebsd32_jail_set(struct thread *td, struct freebsd32_jail_set_args *uap) Modified: head/sys/compat/freebsd32/freebsd32_proto.h ============================================================================== --- head/sys/compat/freebsd32/freebsd32_proto.h Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/freebsd32_proto.h Thu Aug 16 18:40:16 2018 (r337922) @@ -283,9 +283,6 @@ struct freebsd32_sched_rr_get_interval_args { char pid_l_[PADL_(pid_t)]; pid_t pid; char pid_r_[PADR_(pid_t)]; char interval_l_[PADL_(struct timespec32 *)]; struct timespec32 * interval; char interval_r_[PADR_(struct timespec32 *)]; }; -struct freebsd32_jail_args { - char jail_l_[PADL_(struct jail32 *)]; struct jail32 * jail; char jail_r_[PADR_(struct jail32 *)]; -}; struct freebsd32_sigtimedwait_args { char set_l_[PADL_(const sigset_t *)]; const sigset_t * set; char set_r_[PADR_(const sigset_t *)]; char info_l_[PADL_(siginfo_t *)]; siginfo_t * info; char info_r_[PADR_(siginfo_t *)]; @@ -761,7 +758,6 @@ int freebsd32_aio_return(struct thread *, struct freeb int freebsd32_aio_suspend(struct thread *, struct freebsd32_aio_suspend_args *); int freebsd32_aio_error(struct thread *, struct freebsd32_aio_error_args *); int freebsd32_sched_rr_get_interval(struct thread *, struct freebsd32_sched_rr_get_interval_args *); -int freebsd32_jail(struct thread *, struct freebsd32_jail_args *); int freebsd32_sigtimedwait(struct thread *, struct freebsd32_sigtimedwait_args *); int freebsd32_sigwaitinfo(struct thread *, struct freebsd32_sigwaitinfo_args *); int freebsd32_aio_waitcomplete(struct thread *, struct freebsd32_aio_waitcomplete_args *); @@ -1184,6 +1180,9 @@ struct freebsd11_freebsd32_fhstat_args { char u_fhp_l_[PADL_(const struct fhandle *)]; const struct fhandle * u_fhp; char u_fhp_r_[PADR_(const struct fhandle *)]; char sb_l_[PADL_(struct freebsd11_stat32 *)]; struct freebsd11_stat32 * sb; char sb_r_[PADR_(struct freebsd11_stat32 *)]; }; +struct freebsd11_freebsd32_jail_args { + char jail_l_[PADL_(struct jail32 *)]; struct jail32 * jail; char jail_r_[PADR_(struct jail32 *)]; +}; struct freebsd11_freebsd32_kevent_args { char fd_l_[PADL_(int)]; int fd; char fd_r_[PADR_(int)]; char changelist_l_[PADL_(const struct kevent32_freebsd11 *)]; const struct kevent32_freebsd11 * changelist; char changelist_r_[PADR_(const struct kevent32_freebsd11 *)]; @@ -1223,6 +1222,7 @@ int freebsd11_freebsd32_lstat(struct thread *, struct int freebsd11_freebsd32_getdirentries(struct thread *, struct freebsd11_freebsd32_getdirentries_args *); int freebsd11_freebsd32_getdents(struct thread *, struct freebsd11_freebsd32_getdents_args *); int freebsd11_freebsd32_fhstat(struct thread *, struct freebsd11_freebsd32_fhstat_args *); +int freebsd11_freebsd32_jail(struct thread *, struct freebsd11_freebsd32_jail_args *); int freebsd11_freebsd32_kevent(struct thread *, struct freebsd11_freebsd32_kevent_args *); int freebsd11_freebsd32_fstatat(struct thread *, struct freebsd11_freebsd32_fstatat_args *); int freebsd11_freebsd32_mknodat(struct thread *, struct freebsd11_freebsd32_mknodat_args *); @@ -1317,7 +1317,7 @@ int freebsd11_freebsd32_mknodat(struct thread *, struc #define FREEBSD32_SYS_AUE_freebsd6_freebsd32_lio_listio AUE_LIO_LISTIO #define FREEBSD32_SYS_AUE_freebsd32_sched_rr_get_interval AUE_NULL #define FREEBSD32_SYS_AUE_freebsd4_freebsd32_sendfile AUE_SENDFILE -#define FREEBSD32_SYS_AUE_freebsd32_jail AUE_JAIL +#define FREEBSD32_SYS_AUE_freebsd11_freebsd32_jail AUE_JAIL #define FREEBSD32_SYS_AUE_freebsd4_freebsd32_sigaction AUE_SIGACTION #define FREEBSD32_SYS_AUE_freebsd4_freebsd32_sigreturn AUE_SIGRETURN #define FREEBSD32_SYS_AUE_freebsd32_sigtimedwait AUE_SIGWAIT Modified: head/sys/compat/freebsd32/freebsd32_syscall.h ============================================================================== --- head/sys/compat/freebsd32/freebsd32_syscall.h Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/freebsd32_syscall.h Thu Aug 16 18:40:16 2018 (r337922) @@ -275,7 +275,7 @@ #define FREEBSD32_SYS_utrace 335 /* 336 is freebsd4 freebsd32_sendfile */ #define FREEBSD32_SYS_kldsym 337 -#define FREEBSD32_SYS_freebsd32_jail 338 +#define FREEBSD32_SYS_freebsd11_freebsd32_jail 338 #define FREEBSD32_SYS_sigprocmask 340 #define FREEBSD32_SYS_sigsuspend 341 /* 342 is freebsd4 freebsd32_sigaction */ Modified: head/sys/compat/freebsd32/freebsd32_syscalls.c ============================================================================== --- head/sys/compat/freebsd32/freebsd32_syscalls.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/freebsd32_syscalls.c Thu Aug 16 18:40:16 2018 (r337922) @@ -347,7 +347,7 @@ const char *freebsd32_syscallnames[] = { "utrace", /* 335 = utrace */ "compat4.freebsd32_sendfile", /* 336 = freebsd4 freebsd32_sendfile */ "kldsym", /* 337 = kldsym */ - "freebsd32_jail", /* 338 = freebsd32_jail */ + "compat11.freebsd32_jail", /* 338 = freebsd11 freebsd32_jail */ "#339", /* 339 = pioctl */ "sigprocmask", /* 340 = sigprocmask */ "sigsuspend", /* 341 = sigsuspend */ Modified: head/sys/compat/freebsd32/freebsd32_sysent.c ============================================================================== --- head/sys/compat/freebsd32/freebsd32_sysent.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/freebsd32_sysent.c Thu Aug 16 18:40:16 2018 (r337922) @@ -394,7 +394,7 @@ struct sysent freebsd32_sysent[] = { { AS(utrace_args), (sy_call_t *)sys_utrace, AUE_NULL, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 335 = utrace */ { compat4(AS(freebsd4_freebsd32_sendfile_args),freebsd32_sendfile), AUE_SENDFILE, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 336 = freebsd4 freebsd32_sendfile */ { AS(kldsym_args), (sy_call_t *)sys_kldsym, AUE_NULL, NULL, 0, 0, 0, SY_THR_STATIC }, /* 337 = kldsym */ - { AS(freebsd32_jail_args), (sy_call_t *)freebsd32_jail, AUE_JAIL, NULL, 0, 0, 0, SY_THR_STATIC }, /* 338 = freebsd32_jail */ + { compat11(AS(freebsd11_freebsd32_jail_args),freebsd32_jail), AUE_JAIL, NULL, 0, 0, 0, SY_THR_STATIC }, /* 338 = freebsd11 freebsd32_jail */ { 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT }, /* 339 = pioctl */ { AS(sigprocmask_args), (sy_call_t *)sys_sigprocmask, AUE_SIGPROCMASK, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 340 = sigprocmask */ { AS(sigsuspend_args), (sy_call_t *)sys_sigsuspend, AUE_SIGSUSPEND, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 341 = sigsuspend */ Modified: head/sys/compat/freebsd32/freebsd32_systrace_args.c ============================================================================== --- head/sys/compat/freebsd32/freebsd32_systrace_args.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/freebsd32_systrace_args.c Thu Aug 16 18:40:16 2018 (r337922) @@ -1559,13 +1559,6 @@ systrace_args(int sysnum, void *params, uint64_t *uarg *n_args = 3; break; } - /* freebsd32_jail */ - case 338: { - struct freebsd32_jail_args *p = params; - uarg[0] = (intptr_t) p->jail; /* struct jail32 * */ - *n_args = 1; - break; - } /* sigprocmask */ case 340: { struct sigprocmask_args *p = params; @@ -5711,16 +5704,6 @@ systrace_entry_setargdesc(int sysnum, int ndx, char *d break; }; break; - /* freebsd32_jail */ - case 338: - switch(ndx) { - case 0: - p = "userland struct jail32 *"; - break; - default: - break; - }; - break; /* sigprocmask */ case 340: switch(ndx) { @@ -9670,11 +9653,6 @@ systrace_return_setargdesc(int sysnum, int ndx, char * break; /* kldsym */ case 337: - if (ndx == 0 || ndx == 1) - p = "int"; - break; - /* freebsd32_jail */ - case 338: if (ndx == 0 || ndx == 1) p = "int"; break; Modified: head/sys/compat/freebsd32/syscalls.master ============================================================================== --- head/sys/compat/freebsd32/syscalls.master Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/compat/freebsd32/syscalls.master Thu Aug 16 18:40:16 2018 (r337922) @@ -601,7 +601,7 @@ off_t *sbytes, int flags); } 337 AUE_NULL NOPROTO { int kldsym(int fileid, int cmd, \ void *data); } -338 AUE_JAIL STD { int freebsd32_jail(struct jail32 *jail); } +338 AUE_JAIL COMPAT11 { int freebsd32_jail(struct jail32 *jail); } 339 AUE_NULL UNIMPL pioctl 340 AUE_SIGPROCMASK NOPROTO { int sigprocmask(int how, \ const sigset_t *set, sigset_t *oset); } Modified: head/sys/fs/nandfs/nandfs_vnops.c ============================================================================== --- head/sys/fs/nandfs/nandfs_vnops.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/fs/nandfs/nandfs_vnops.c Thu Aug 16 18:40:16 2018 (r337922) @@ -834,9 +834,8 @@ nandfs_setattr(struct vop_setattr_args *ap) * Privileged non-jail processes may not modify system flags * if securelevel > 0 and any existing system flags are set. * Privileged jail processes behave like privileged non-jail - * processes if the security.jail.chflags_allowed sysctl is - * is non-zero; otherwise, they behave like unprivileged - * processes. + * processes if the PR_ALLOW_CHFLAGS permission bit is set; + * otherwise, they behave like unprivileged processes. */ flags = inode->i_flags; Modified: head/sys/kern/init_sysent.c ============================================================================== --- head/sys/kern/init_sysent.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/kern/init_sysent.c Thu Aug 16 18:40:16 2018 (r337922) @@ -387,7 +387,7 @@ struct sysent sysent[] = { { AS(utrace_args), (sy_call_t *)sys_utrace, AUE_NULL, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 335 = utrace */ { compat4(AS(freebsd4_sendfile_args),sendfile), AUE_SENDFILE, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 336 = freebsd4 sendfile */ { AS(kldsym_args), (sy_call_t *)sys_kldsym, AUE_NULL, NULL, 0, 0, 0, SY_THR_STATIC }, /* 337 = kldsym */ - { AS(jail_args), (sy_call_t *)sys_jail, AUE_JAIL, NULL, 0, 0, 0, SY_THR_STATIC }, /* 338 = jail */ + { compat11(AS(freebsd11_jail_args),jail), AUE_JAIL, NULL, 0, 0, 0, SY_THR_STATIC }, /* 338 = freebsd11 jail */ { AS(nnpfs_syscall_args), (sy_call_t *)lkmressys, AUE_NULL, NULL, 0, 0, 0, SY_THR_ABSENT }, /* 339 = nnpfs_syscall */ { AS(sigprocmask_args), (sy_call_t *)sys_sigprocmask, AUE_SIGPROCMASK, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 340 = sigprocmask */ { AS(sigsuspend_args), (sy_call_t *)sys_sigsuspend, AUE_SIGSUSPEND, NULL, 0, 0, SYF_CAPENABLED, SY_THR_STATIC }, /* 341 = sigsuspend */ Modified: head/sys/kern/kern_jail.c ============================================================================== --- head/sys/kern/kern_jail.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/kern/kern_jail.c Thu Aug 16 18:40:16 2018 (r337922) @@ -74,6 +74,14 @@ __FBSDID("$FreeBSD$"); #include <security/mac/mac_framework.h> +/* + * The old jail(2) interface will exist under COMPAT_FREEBSD11, but the global + * permission sysctls are slated to go away sometime (even with COMPAT). + */ +#if defined(COMPAT_FREEBSD11) && !defined(BURN_BRIDGES) +#define PR_GLOBAL_ALLOW +#endif + #define DEFAULT_HOSTUUID "00000000-0000-0000-0000-000000000000" MALLOC_DEFINE(M_PRISON, "prison", "Prison structures"); @@ -199,9 +207,11 @@ const size_t pr_flag_allow_size = sizeof(pr_flag_allow #define JAIL_DEFAULT_ALLOW (PR_ALLOW_SET_HOSTNAME | PR_ALLOW_RESERVED_PORTS) #define JAIL_DEFAULT_ENFORCE_STATFS 2 #define JAIL_DEFAULT_DEVFS_RSNUM 0 +#ifdef PR_GLOBAL_ALLOW static unsigned jail_default_allow = JAIL_DEFAULT_ALLOW; static int jail_default_enforce_statfs = JAIL_DEFAULT_ENFORCE_STATFS; static int jail_default_devfs_rsnum = JAIL_DEFAULT_DEVFS_RSNUM; +#endif #if defined(INET) || defined(INET6) static unsigned jail_max_af_ips = 255; #endif @@ -219,13 +229,14 @@ prison0_init(void) strlcpy(prison0.pr_osrelease, osrelease, sizeof(prison0.pr_osrelease)); } +#ifdef COMPAT_FREEBSD11 /* * struct jail_args { * struct jail *jail; * }; */ int -sys_jail(struct thread *td, struct jail_args *uap) +freebsd11_jail(struct thread *td, struct freebsd11_jail_args *uap) { uint32_t version; int error; @@ -270,13 +281,16 @@ sys_jail(struct thread *td, struct jail_args *uap) /* Sci-Fi jails are not supported, sorry. */ return (EINVAL); } - return (kern_jail(td, &j)); + return (freebsd11_kern_jail(td, &j)); } int -kern_jail(struct thread *td, struct jail *j) +freebsd11_kern_jail(struct thread *td, struct jail *j) { - struct iovec optiov[2 * (4 + nitems(pr_flag_allow) + struct iovec optiov[2 * (3 +#ifdef PR_GLOBAL_ALLOW + + 1 + nitems(pr_flag_allow) +#endif #ifdef INET + 1 #endif @@ -286,7 +300,10 @@ kern_jail(struct thread *td, struct jail *j) )]; struct uio opt; char *u_path, *u_hostname, *u_name; +#ifdef PR_GLOBAL_ALLOW struct bool_flags *bf; + int enforce_statfs; +#endif #ifdef INET uint32_t ip4s; struct in_addr *u_ip4; @@ -295,7 +312,7 @@ kern_jail(struct thread *td, struct jail *j) struct in6_addr *u_ip6; #endif size_t tmplen; - int error, enforce_statfs; + int error; bzero(&optiov, sizeof(optiov)); opt.uio_iov = optiov; @@ -306,6 +323,7 @@ kern_jail(struct thread *td, struct jail *j) opt.uio_rw = UIO_READ; opt.uio_td = td; +#ifdef PR_GLOBAL_ALLOW /* Set permissions for top-level jails from sysctls. */ if (!jailed(td->td_ucred)) { for (bf = pr_flag_allow; @@ -327,6 +345,7 @@ kern_jail(struct thread *td, struct jail *j) optiov[opt.uio_iovcnt].iov_len = sizeof(enforce_statfs); opt.uio_iovcnt++; } +#endif tmplen = MAXPATHLEN + MAXHOSTNAMELEN + MAXHOSTNAMELEN; #ifdef INET @@ -430,6 +449,7 @@ kern_jail(struct thread *td, struct jail *j) free(u_path, M_TEMP); return (error); } +#endif /* COMPAT_FREEBSD11 */ /* @@ -1247,7 +1267,11 @@ kern_jail_set(struct thread *td, struct uio *optuio, i pr->pr_securelevel = ppr->pr_securelevel; pr->pr_allow = JAIL_DEFAULT_ALLOW & ppr->pr_allow; +#ifdef PR_GLOBAL_ALLOW pr->pr_enforce_statfs = jail_default_enforce_statfs; +#else + pr->pr_enforce_statfs = JAIL_DEFAULT_ENFORCE_STATFS; +#endif pr->pr_devfs_rsnum = ppr->pr_devfs_rsnum; pr->pr_osreldate = osreldt ? osreldt : ppr->pr_osreldate; @@ -3415,6 +3439,7 @@ prison_path(struct prison *pr1, struct prison *pr2) static SYSCTL_NODE(_security, OID_AUTO, jail, CTLFLAG_RW, 0, "Jails"); +#ifdef COMPAT_FREEBSD11 static int sysctl_jail_list(SYSCTL_HANDLER_ARGS) { @@ -3518,6 +3543,7 @@ sysctl_jail_list(SYSCTL_HANDLER_ARGS) SYSCTL_OID(_security_jail, OID_AUTO, list, CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_jail_list, "S", "List of active jails"); +#endif /* COMPAT_FREEBSD11 */ static int sysctl_jail_jailed(SYSCTL_HANDLER_ARGS) @@ -3557,13 +3583,14 @@ SYSCTL_PROC(_security_jail, OID_AUTO, vnet, #if defined(INET) || defined(INET6) SYSCTL_UINT(_security_jail, OID_AUTO, jail_max_af_ips, CTLFLAG_RW, &jail_max_af_ips, 0, - "Number of IP addresses a jail may have at most per address family (deprecated)"); + "Number of IP addresses a jail may have at most per address family"); #endif /* - * Default parameters for jail(2) compatibility. For historical reasons, - * the sysctl names have varying similarity to the parameter names. Prisons - * just see their own parameters, and can't change them. + * Jail permissions - jailed processes can read these to find out what they are + * allowed to do. A deprecated use is to set default permissions for prisons + * created via jail(2). For historical reasons, the sysctl names have varying + * similarity to the parameter names. */ static int sysctl_jail_default_allow(SYSCTL_HANDLER_ARGS) @@ -3572,52 +3599,68 @@ sysctl_jail_default_allow(SYSCTL_HANDLER_ARGS) int allow, error, i; pr = req->td->td_ucred->cr_prison; +#ifdef PR_GLOBAL_ALLOW allow = (pr == &prison0) ? jail_default_allow : pr->pr_allow; +#else + allow = pr->pr_allow; +#endif /* Get the current flag value, and convert it to a boolean. */ i = (allow & arg2) ? 1 : 0; if (arg1 != NULL) i = !i; error = sysctl_handle_int(oidp, &i, 0, req); - if (error || !req->newptr) + if (error) return (error); - i = i ? arg2 : 0; - if (arg1 != NULL) - i ^= arg2; - /* - * The sysctls don't have CTLFLAGS_PRISON, so assume prison0 - * for writing. - */ - mtx_lock(&prison0.pr_mtx); - jail_default_allow = (jail_default_allow & ~arg2) | i; - mtx_unlock(&prison0.pr_mtx); +#ifdef PR_GLOBAL_ALLOW + if (req->newptr) { + i = i ? arg2 : 0; + if (arg1 != NULL) + i ^= arg2; + /* + * The sysctls don't have CTLFLAGS_PRISON, so assume prison0 + * for writing. + */ + mtx_lock(&prison0.pr_mtx); + jail_default_allow = (jail_default_allow & ~arg2) | i; + mtx_unlock(&prison0.pr_mtx); + } +#endif return (0); } +#ifdef PR_GLOBAL_ALLOW +#define CTLFLAG_GLOBAL_ALLOW (CTLFLAG_RW | CTLFLAG_MPSAFE) +#define ADDR_GLOBAL_ALLOW(i) &i +#else +#define CTLFLAG_GLOBAL_ALLOW (CTLFLAG_RD | CTLFLAG_MPSAFE) +#define ADDR_GLOBAL_ALLOW(i) NULL +#endif + SYSCTL_PROC(_security_jail, OID_AUTO, set_hostname_allowed, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, NULL, PR_ALLOW_SET_HOSTNAME, sysctl_jail_default_allow, "I", - "Processes in jail can set their hostnames (deprecated)"); + "Processes in jail can set their hostnames"); SYSCTL_PROC(_security_jail, OID_AUTO, socket_unixiproute_only, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, (void *)1, PR_ALLOW_SOCKET_AF, sysctl_jail_default_allow, "I", - "Processes in jail are limited to creating UNIX/IP/route sockets only (deprecated)"); + "Processes in jail are limited to creating UNIX/IP/route sockets only"); SYSCTL_PROC(_security_jail, OID_AUTO, sysvipc_allowed, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, NULL, PR_ALLOW_SYSVIPC, sysctl_jail_default_allow, "I", - "Processes in jail can use System V IPC primitives (deprecated)"); + "Processes in jail can use System V IPC primitives"); SYSCTL_PROC(_security_jail, OID_AUTO, allow_raw_sockets, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, NULL, PR_ALLOW_RAW_SOCKETS, sysctl_jail_default_allow, "I", - "Prison root can create raw sockets (deprecated)"); + "Prison root can create raw sockets"); SYSCTL_PROC(_security_jail, OID_AUTO, chflags_allowed, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, NULL, PR_ALLOW_CHFLAGS, sysctl_jail_default_allow, "I", - "Processes in jail can alter system file flags (deprecated)"); + "Processes in jail can alter system file flags"); SYSCTL_PROC(_security_jail, OID_AUTO, mount_allowed, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, NULL, PR_ALLOW_MOUNT, sysctl_jail_default_allow, "I", - "Processes in jail can mount/unmount jail-friendly file systems (deprecated)"); + "Processes in jail can mount/unmount jail-friendly file systems"); static int sysctl_jail_default_level(SYSCTL_HANDLER_ARGS) @@ -3626,25 +3669,33 @@ sysctl_jail_default_level(SYSCTL_HANDLER_ARGS) int level, error; pr = req->td->td_ucred->cr_prison; +#ifdef PR_GLOBAL_ALLOW level = (pr == &prison0) ? *(int *)arg1 : *(int *)((char *)pr + arg2); +#else + level = *(int *)((char *)pr + arg2); +#endif error = sysctl_handle_int(oidp, &level, 0, req); - if (error || !req->newptr) + if (error) return (error); - *(int *)arg1 = level; +#ifdef PR_GLOBAL_ALLOW + if (req->newptr) + *(int *)arg1 = level; +#endif return (0); } SYSCTL_PROC(_security_jail, OID_AUTO, enforce_statfs, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, - &jail_default_enforce_statfs, offsetof(struct prison, pr_enforce_statfs), + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, + ADDR_GLOBAL_ALLOW(jail_default_enforce_statfs), + offsetof(struct prison, pr_enforce_statfs), sysctl_jail_default_level, "I", - "Processes in jail cannot see all mounted file systems (deprecated)"); - + "Processes in jail cannot see all mounted file systems"); SYSCTL_PROC(_security_jail, OID_AUTO, devfs_ruleset, - CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, - &jail_default_devfs_rsnum, offsetof(struct prison, pr_devfs_rsnum), + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, + ADDR_GLOBAL_ALLOW(jail_default_devfs_rsnum), + offsetof(struct prison, pr_devfs_rsnum), sysctl_jail_default_level, "I", - "Ruleset for the devfs filesystem in jail (deprecated)"); + "Ruleset for the devfs filesystem in jail"); /* * Nodes to describe jail parameters. Maximum length of string parameters @@ -3785,9 +3836,6 @@ prison_add_allow(const char *prefix, const char *name, struct bool_flags *bf; struct sysctl_oid *parent; char *allow_name, *allow_noname, *allowed; -#ifndef NO_SYSCTL_DESCR - char *descr_deprecated; -#endif unsigned allow_flag; if (prefix @@ -3844,10 +3892,7 @@ prison_add_allow(const char *prefix, const char *name, bf->flag = allow_flag; mtx_unlock(&prison0.pr_mtx); - /* - * Create sysctls for the paramter, and the back-compat global - * permission. - */ + /* Create sysctls for the paramter, and the current permission. */ parent = prefix ? SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(&sysctl___security_jail_param_allow), @@ -3859,17 +3904,10 @@ prison_add_allow(const char *prefix, const char *name, if ((prefix ? asprintf(&allowed, M_TEMP, "%s_%s_allowed", prefix, name) : asprintf(&allowed, M_TEMP, "%s_allowed", name)) >= 0) { -#ifndef NO_SYSCTL_DESCR - (void)asprintf(&descr_deprecated, M_TEMP, "%s (deprecated)", - descr); -#endif (void)SYSCTL_ADD_PROC(NULL, SYSCTL_CHILDREN(&sysctl___security_jail), OID_AUTO, allowed, - CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, allow_flag, - sysctl_jail_default_allow, "I", descr_deprecated); -#ifndef NO_SYSCTL_DESCR - free(descr_deprecated, M_TEMP); -#endif + CTLTYPE_INT | CTLFLAG_GLOBAL_ALLOW, NULL, allow_flag, + sysctl_jail_default_allow, "I", descr); free(allowed, M_TEMP); } return allow_flag; Modified: head/sys/kern/syscalls.c ============================================================================== --- head/sys/kern/syscalls.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/kern/syscalls.c Thu Aug 16 18:40:16 2018 (r337922) @@ -344,7 +344,7 @@ const char *syscallnames[] = { "utrace", /* 335 = utrace */ "compat4.sendfile", /* 336 = freebsd4 sendfile */ "kldsym", /* 337 = kldsym */ - "jail", /* 338 = jail */ + "compat11.jail", /* 338 = freebsd11 jail */ "nnpfs_syscall", /* 339 = nnpfs_syscall */ "sigprocmask", /* 340 = sigprocmask */ "sigsuspend", /* 341 = sigsuspend */ Modified: head/sys/kern/syscalls.master ============================================================================== --- head/sys/kern/syscalls.master Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/kern/syscalls.master Thu Aug 16 18:40:16 2018 (r337922) @@ -738,7 +738,7 @@ _Out_opt_ off_t *sbytes, int flags); } 337 AUE_NULL STD { int kldsym(int fileid, int cmd, \ _In_ void *data); } -338 AUE_JAIL STD { int jail( \ +338 AUE_JAIL COMPAT11 { int jail( \ _In_ struct jail *jail); } 339 AUE_NULL NOSTD|NOTSTATIC { int nnpfs_syscall(int operation, \ Modified: head/sys/kern/systrace_args.c ============================================================================== --- head/sys/kern/systrace_args.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/kern/systrace_args.c Thu Aug 16 18:40:16 2018 (r337922) @@ -1593,13 +1593,6 @@ systrace_args(int sysnum, void *params, uint64_t *uarg *n_args = 3; break; } - /* jail */ - case 338: { - struct jail_args *p = params; - uarg[0] = (intptr_t) p->jail; /* struct jail * */ - *n_args = 1; - break; - } /* nnpfs_syscall */ case 339: { struct nnpfs_syscall_args *p = params; @@ -5772,16 +5765,6 @@ systrace_entry_setargdesc(int sysnum, int ndx, char *d break; }; break; - /* jail */ - case 338: - switch(ndx) { - case 0: - p = "userland struct jail *"; - break; - default: - break; - }; - break; /* nnpfs_syscall */ case 339: switch(ndx) { @@ -9644,11 +9627,6 @@ systrace_return_setargdesc(int sysnum, int ndx, char * break; /* kldsym */ case 337: - if (ndx == 0 || ndx == 1) - p = "int"; - break; - /* jail */ - case 338: if (ndx == 0 || ndx == 1) p = "int"; break; Modified: head/sys/sys/jail.h ============================================================================== --- head/sys/sys/jail.h Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/sys/jail.h Thu Aug 16 18:40:16 2018 (r337922) @@ -32,6 +32,7 @@ #ifndef _SYS_JAIL_H_ #define _SYS_JAIL_H_ +#ifdef COMPAT_FREEBSD11 #ifdef _KERNEL struct jail_v0 { u_int32_t version; @@ -57,16 +58,6 @@ struct jail { * For all xprison structs, always keep the pr_version an int and * the first variable so userspace can easily distinguish them. */ -#ifndef _KERNEL -struct xprison_v1 { - int pr_version; - int pr_id; - char pr_path[MAXPATHLEN]; - char pr_host[MAXHOSTNAMELEN]; - u_int32_t pr_ip; -}; -#endif - struct xprison { int pr_version; int pr_id; @@ -91,6 +82,7 @@ struct xprison { #define PRISON_STATE_INVALID 0 #define PRISON_STATE_ALIVE 1 #define PRISON_STATE_DYING 2 +#endif /* COMPAT_FREEBSD11 */ /* * Flags for jail_set and jail_get. @@ -110,7 +102,6 @@ struct xprison { struct iovec; -int jail(struct jail *); int jail_set(struct iovec *, unsigned int, int); int jail_get(struct iovec *, unsigned int, int); int jail_attach(int); Modified: head/sys/sys/syscall.h ============================================================================== --- head/sys/sys/syscall.h Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/sys/syscall.h Thu Aug 16 18:40:16 2018 (r337922) @@ -280,7 +280,7 @@ #define SYS_utrace 335 /* 336 is freebsd4 sendfile */ #define SYS_kldsym 337 -#define SYS_jail 338 +#define SYS_freebsd11_jail 338 #define SYS_nnpfs_syscall 339 #define SYS_sigprocmask 340 #define SYS_sigsuspend 341 Modified: head/sys/sys/syscall.mk ============================================================================== --- head/sys/sys/syscall.mk Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/sys/syscall.mk Thu Aug 16 18:40:16 2018 (r337922) @@ -209,7 +209,7 @@ MIASM = \ sched_rr_get_interval.o \ utrace.o \ kldsym.o \ - jail.o \ + freebsd11_jail.o \ nnpfs_syscall.o \ sigprocmask.o \ sigsuspend.o \ Modified: head/sys/sys/syscallsubr.h ============================================================================== --- head/sys/sys/syscallsubr.h Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/sys/syscallsubr.h Thu Aug 16 18:40:16 2018 (r337922) @@ -143,7 +143,6 @@ int kern_getsockname(struct thread *td, int fd, struct int kern_getsockopt(struct thread *td, int s, int level, int name, void *optval, enum uio_seg valseg, socklen_t *valsize); int kern_ioctl(struct thread *td, int fd, u_long com, caddr_t data); -int kern_jail(struct thread *td, struct jail *j); int kern_jail_get(struct thread *td, struct uio *options, int flags); int kern_jail_set(struct thread *td, struct uio *options, int flags); int kern_kevent(struct thread *td, int fd, int nchanges, int nevents, @@ -308,5 +307,6 @@ struct freebsd11_dirent; int freebsd11_kern_getdirentries(struct thread *td, int fd, char *ubuf, u_int count, long *basep, void (*func)(struct freebsd11_dirent *)); +int freebsd11_kern_jail(struct thread *td, struct jail *j); #endif /* !_SYS_SYSCALLSUBR_H_ */ Modified: head/sys/sys/sysproto.h ============================================================================== --- head/sys/sys/sysproto.h Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/sys/sysproto.h Thu Aug 16 18:40:16 2018 (r337922) @@ -849,9 +849,6 @@ struct kldsym_args { char cmd_l_[PADL_(int)]; int cmd; char cmd_r_[PADR_(int)]; char data_l_[PADL_(void *)]; void * data; char data_r_[PADR_(void *)]; }; -struct jail_args { - char jail_l_[PADL_(struct jail *)]; struct jail * jail; char jail_r_[PADR_(struct jail *)]; -}; struct nnpfs_syscall_args { char operation_l_[PADL_(int)]; int operation; char operation_r_[PADR_(int)]; char a_pathP_l_[PADL_(char *)]; char * a_pathP; char a_pathP_r_[PADR_(char *)]; @@ -1961,7 +1958,6 @@ int sys_sched_get_priority_min(struct thread *, struct int sys_sched_rr_get_interval(struct thread *, struct sched_rr_get_interval_args *); int sys_utrace(struct thread *, struct utrace_args *); int sys_kldsym(struct thread *, struct kldsym_args *); -int sys_jail(struct thread *, struct jail_args *); int sys_nnpfs_syscall(struct thread *, struct nnpfs_syscall_args *); int sys_sigprocmask(struct thread *, struct sigprocmask_args *); int sys_sigsuspend(struct thread *, struct sigsuspend_args *); @@ -2531,6 +2527,9 @@ struct freebsd11_fhstat_args { char u_fhp_l_[PADL_(const struct fhandle *)]; const struct fhandle * u_fhp; char u_fhp_r_[PADR_(const struct fhandle *)]; char sb_l_[PADL_(struct freebsd11_stat *)]; struct freebsd11_stat * sb; char sb_r_[PADR_(struct freebsd11_stat *)]; }; +struct freebsd11_jail_args { + char jail_l_[PADL_(struct jail *)]; struct jail * jail; char jail_r_[PADR_(struct jail *)]; +}; struct freebsd11_kevent_args { char fd_l_[PADL_(int)]; int fd; char fd_r_[PADR_(int)]; char changelist_l_[PADL_(struct kevent_freebsd11 *)]; struct kevent_freebsd11 * changelist; char changelist_r_[PADR_(struct kevent_freebsd11 *)]; @@ -2579,6 +2578,7 @@ int freebsd11_nstat(struct thread *, struct freebsd11_ int freebsd11_nfstat(struct thread *, struct freebsd11_nfstat_args *); int freebsd11_nlstat(struct thread *, struct freebsd11_nlstat_args *); int freebsd11_fhstat(struct thread *, struct freebsd11_fhstat_args *); +int freebsd11_jail(struct thread *, struct freebsd11_jail_args *); int freebsd11_kevent(struct thread *, struct freebsd11_kevent_args *); int freebsd11_getfsstat(struct thread *, struct freebsd11_getfsstat_args *); int freebsd11_statfs(struct thread *, struct freebsd11_statfs_args *); @@ -2849,7 +2849,7 @@ int freebsd11_mknodat(struct thread *, struct freebsd1 #define SYS_AUE_utrace AUE_NULL #define SYS_AUE_freebsd4_sendfile AUE_SENDFILE #define SYS_AUE_kldsym AUE_NULL -#define SYS_AUE_jail AUE_JAIL +#define SYS_AUE_freebsd11_jail AUE_JAIL #define SYS_AUE_nnpfs_syscall AUE_NULL #define SYS_AUE_sigprocmask AUE_SIGPROCMASK #define SYS_AUE_sigsuspend AUE_SIGSUSPEND Modified: head/sys/ufs/ufs/ufs_vnops.c ============================================================================== --- head/sys/ufs/ufs/ufs_vnops.c Thu Aug 16 18:37:47 2018 (r337921) +++ head/sys/ufs/ufs/ufs_vnops.c Thu Aug 16 18:40:16 2018 (r337922) @@ -550,9 +550,8 @@ ufs_setattr(ap) * Privileged non-jail processes may not modify system flags * if securelevel > 0 and any existing system flags are set. * Privileged jail processes behave like privileged non-jail - * processes if the security.jail.chflags_allowed sysctl is - * is non-zero; otherwise, they behave like unprivileged - * processes. + * processes if the PR_ALLOW_CHFLAGS permission bit is set; + * otherwise, they behave like unprivileged processes. */ if (!priv_check_cred(cred, PRIV_VFS_SYSFLAGS, 0)) { if (ip->i_flags &
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201808161840.w7GIeHGl045096>