diff options
Diffstat (limited to 'usr/src/uts/common/os')
| -rw-r--r-- | usr/src/uts/common/os/exit.c | 76 | ||||
| -rw-r--r-- | usr/src/uts/common/os/logsubr.c | 4 | ||||
| -rw-r--r-- | usr/src/uts/common/os/sig.c | 49 | ||||
| -rw-r--r-- | usr/src/uts/common/os/zone.c | 11 |
4 files changed, 116 insertions, 24 deletions
diff --git a/usr/src/uts/common/os/exit.c b/usr/src/uts/common/os/exit.c index 6a27544201..02844cef07 100644 --- a/usr/src/uts/common/os/exit.c +++ b/usr/src/uts/common/os/exit.c @@ -400,14 +400,36 @@ proc_exit(int why, int what) if (z->zone_boot_err == 0 && zone_status_get(z) < ZONE_IS_SHUTTING_DOWN && zone_status_get(global_zone) < ZONE_IS_SHUTTING_DOWN) { - if (z->zone_restart_init == B_TRUE) { - if (restart_init(what, why) == 0) - return (0); - } - z->zone_init_status = wstat(why, what); - (void) zone_kadmin(A_SHUTDOWN, AD_HALT, NULL, - zone_kcred()); + /* + * If the init process should be restarted, the + * "zone_restart_init" member will be set. Some init + * programs in branded zones do not tolerate a restart + * in the traditional manner; setting the + * "zone_reboot_on_init_exit" member will cause the + * entire zone to be rebooted instead. If neither of + * these flags is set the zone will shut down. + */ + if (z->zone_reboot_on_init_exit == B_TRUE && + z->zone_restart_init == B_TRUE) { + /* + * Trigger a zone reboot and continue + * with exit processing. + */ + z->zone_init_status = wstat(why, what); + (void) zone_kadmin(A_REBOOT, 0, NULL, + zone_kcred()); + + } else { + if (z->zone_restart_init == B_TRUE) { + if (restart_init(what, why) == 0) + return (0); + } + + z->zone_init_status = wstat(why, what); + (void) zone_kadmin(A_SHUTDOWN, AD_HALT, NULL, + zone_kcred()); + } } /* @@ -995,10 +1017,9 @@ winfo(proc_t *pp, k_siginfo_t *ip, int waitflag) int waitid(idtype_t idtype, id_t id, k_siginfo_t *ip, int options) { - int found; proc_t *cp, *pp; - int proc_gone; int waitflag = !(options & WNOWAIT); + boolean_t have_brand_helper = B_FALSE; /* * Obsolete flag, defined here only for binary compatibility @@ -1047,10 +1068,37 @@ waitid(idtype_t idtype, id_t id, k_siginfo_t *ip, int options) return (ECHILD); } - while (pp->p_child != NULL) { + if (PROC_IS_BRANDED(pp) && BROP(pp)->b_waitid_helper != NULL) { + have_brand_helper = B_TRUE; + } + + while (pp->p_child != NULL || have_brand_helper) { + boolean_t brand_wants_wait = B_FALSE; + int proc_gone = 0; + int found = 0; + + /* + * Give the brand a chance to return synthetic results from + * this waitid() call before we do the real thing. + */ + if (have_brand_helper) { + int ret; - proc_gone = 0; + if (BROP(pp)->b_waitid_helper(idtype, id, ip, options, + &brand_wants_wait, &ret) == 0) { + mutex_exit(&pidlock); + return (ret); + } + if (pp->p_child == NULL) { + goto no_real_children; + } + } + + /* + * Look for interesting children in the newstate list. + */ + VERIFY(pp->p_child != NULL); for (cp = pp->p_child_ns; cp != NULL; cp = cp->p_sibling_ns) { if (idtype != P_PID && (cp->p_pidflag & CLDWAITPID)) continue; @@ -1107,7 +1155,6 @@ waitid(idtype_t idtype, id_t id, k_siginfo_t *ip, int options) * Wow! None of the threads on the p_sibling_ns list were * interesting threads. Check all the kids! */ - found = 0; for (cp = pp->p_child; cp != NULL; cp = cp->p_sibling) { if (idtype == P_PID && id != cp->p_pid) continue; @@ -1186,11 +1233,12 @@ waitid(idtype_t idtype, id_t id, k_siginfo_t *ip, int options) break; } +no_real_children: /* * If we found no interesting processes at all, * break out and return ECHILD. */ - if (found + proc_gone == 0) + if (!brand_wants_wait && (found + proc_gone == 0)) break; if (options & WNOHANG) { @@ -1209,7 +1257,7 @@ waitid(idtype_t idtype, id_t id, k_siginfo_t *ip, int options) * change state while we wait, we don't wait at all. * Get out with ECHILD according to SVID. */ - if (found == proc_gone) + if (!brand_wants_wait && (found == proc_gone)) break; if (!cv_wait_sig_swap(&pp->p_cv, &pidlock)) { diff --git a/usr/src/uts/common/os/logsubr.c b/usr/src/uts/common/os/logsubr.c index 86e9045887..6a603c8982 100644 --- a/usr/src/uts/common/os/logsubr.c +++ b/usr/src/uts/common/os/logsubr.c @@ -22,7 +22,7 @@ /* * Copyright (c) 2013 Gary Mills * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2014, Joyent, Inc. All rights reserved. + * Copyright (c) 2015, Joyent, Inc. */ #include <sys/types.h> @@ -250,7 +250,7 @@ log_init(void) */ printf("\rSunOS Release %s Version %s %u-bit\n", utsname.release, utsname.version, NBBY * (uint_t)sizeof (void *)); - printf("Copyright (c) 2010-2014, Joyent Inc. All rights reserved.\n"); + printf("Copyright (c) 2010-2015, Joyent Inc. All rights reserved.\n"); #ifdef DEBUG printf("DEBUG enabled\n"); #endif diff --git a/usr/src/uts/common/os/sig.c b/usr/src/uts/common/os/sig.c index b117bf3584..ae643c280e 100644 --- a/usr/src/uts/common/os/sig.c +++ b/usr/src/uts/common/os/sig.c @@ -22,7 +22,7 @@ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. - * Copyright 2014, Joyent, Inc. All rights reserved. + * Copyright 2015, Joyent, Inc. */ /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ @@ -194,7 +194,7 @@ eat_signal(kthread_t *t, int sig) !(ttoproc(t)->p_proc_flag & P_PR_LOCK)) { ttoproc(t)->p_stopsig = 0; t->t_dtrace_stop = 0; - t->t_schedflag |= TS_XSTART | TS_PSTART; + t->t_schedflag |= TS_XSTART | TS_PSTART | TS_BSTART; setrun_locked(t); } else if (t != curthread && t->t_state == TS_ONPROC) { aston(t); /* make it do issig promptly */ @@ -608,6 +608,21 @@ issig_forreal(void) } /* + * Allow the brand the chance to alter (or suppress) delivery + * of this signal. + */ + if (PROC_IS_BRANDED(p) && BROP(p)->b_issig_stop != NULL) { + /* + * The brand hook will return 0 if it would like + * us to drive on, or -1 if we should restart + * the loop to check other conditions. + */ + if (BROP(p)->b_issig_stop(p, lwp) != 0) { + continue; + } + } + + /* * Honor requested stop before dealing with the * current signal; a debugger may change it. * Do not want to go back to loop here since this is a special @@ -939,6 +954,16 @@ stop(int why, int what) } break; + case PR_BRAND: + /* + * We have been stopped by the brand code for a brand-private + * reason. This is an asynchronous stop affecting only this + * LWP. + */ + VERIFY(PROC_IS_BRANDED(p)); + flags &= ~TS_BSTART; + break; + default: /* /proc stop */ flags &= ~TS_PSTART; /* @@ -1050,7 +1075,7 @@ stop(int why, int what) } } - if (why != PR_JOBCONTROL && why != PR_CHECKPOINT) { + if (why != PR_JOBCONTROL && why != PR_CHECKPOINT && why != PR_BRAND) { /* * Do process-level notification when all lwps are * either stopped on events of interest to /proc @@ -1156,6 +1181,13 @@ stop(int why, int what) if (why == PR_CHECKPOINT) del_one_utstop(); + /* + * Allow the brand to post notification of this stop condition. + */ + if (PROC_IS_BRANDED(p) && BROP(p)->b_stop_notify != NULL) { + BROP(p)->b_stop_notify(p, lwp, why, what); + } + thread_lock(t); ASSERT((t->t_schedflag & TS_ALLSTART) == 0); t->t_schedflag |= flags; @@ -1177,7 +1209,7 @@ stop(int why, int what) (p->p_flag & (SEXITLWPS|SKILLED))) { p->p_stopsig = 0; thread_lock(t); - t->t_schedflag |= TS_XSTART | TS_PSTART; + t->t_schedflag |= TS_XSTART | TS_PSTART | TS_BSTART; setrun_locked(t); thread_unlock_nopreempt(t); } else if (why == PR_JOBCONTROL) { @@ -1795,6 +1827,15 @@ sigcld_repost() sqp = kmem_zalloc(sizeof (sigqueue_t), KM_SLEEP); mutex_enter(&pidlock); + if (PROC_IS_BRANDED(pp) && BROP(pp)->b_sigcld_repost != NULL) { + /* + * Allow the brand to inject synthetic SIGCLD signals. + */ + if (BROP(pp)->b_sigcld_repost(pp, sqp) == 0) { + mutex_exit(&pidlock); + return; + } + } for (cp = pp->p_child; cp; cp = cp->p_sibling) { if (cp->p_pidflag & CLDPEND) { post_sigcld(cp, sqp); diff --git a/usr/src/uts/common/os/zone.c b/usr/src/uts/common/os/zone.c index 285aeac032..347a90a022 100644 --- a/usr/src/uts/common/os/zone.c +++ b/usr/src/uts/common/os/zone.c @@ -2624,6 +2624,7 @@ zone_init(void) zone0.zone_ntasks = 1; mutex_exit(&p0.p_lock); zone0.zone_restart_init = B_TRUE; + zone0.zone_reboot_on_init_exit = B_FALSE; zone0.zone_init_status = -1; zone0.zone_brand = &native_brand; rctl_prealloc_destroy(gp); @@ -4669,8 +4670,9 @@ parse_rctls(caddr_t ubuf, size_t buflen, nvlist_t **nvlp) error = EINVAL; name = nvpair_name(nvp); - if (strncmp(nvpair_name(nvp), "zone.", sizeof ("zone.") - 1) - != 0 || nvpair_type(nvp) != DATA_TYPE_NVLIST_ARRAY) { + if ((strncmp(name, "zone.", sizeof ("zone.") - 1) != 0 && + strncmp(name, "project.", sizeof ("project.") - 1) != 0) || + nvpair_type(nvp) != DATA_TYPE_NVLIST_ARRAY) { goto out; } if ((hndl = rctl_hndl_lookup(name)) == -1) { @@ -4819,6 +4821,7 @@ zone_create(const char *zone_name, const char *zone_root, zone->zone_ncpus = 0; zone->zone_ncpus_online = 0; zone->zone_restart_init = B_TRUE; + zone->zone_reboot_on_init_exit = B_FALSE; zone->zone_init_status = -1; zone->zone_brand = &native_brand; zone->zone_initname = NULL; @@ -5045,8 +5048,8 @@ zone_create(const char *zone_name, const char *zone_root, /* * The process, task, and project rctls are probably wrong; * we need an interface to get the default values of all rctls, - * and initialize zsched appropriately. I'm not sure that that - * makes much of a difference, though. + * and initialize zsched appropriately. However, we allow zoneadmd + * to pass down both zone and project rctls for the zone's init. */ error = newproc(zsched, (void *)&zarg, syscid, minclsyspri, NULL, 0); if (error != 0) { |