[rtems-libbsd commit] Added support for initialization of uihashinit().
Jennifer Averett
jennifer at rtems.org
Wed May 30 16:45:42 UTC 2012
Module: rtems-libbsd
Branch: master
Commit: 20b5ca1d00909c3412d22bff00b14d067a79a69d
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=20b5ca1d00909c3412d22bff00b14d067a79a69d
Author: Jennifer Averett <jennifer.averett at oarcorp.com>
Date: Wed May 30 11:49:04 2012 -0500
Added support for initialization of uihashinit().
---
Makefile | 1 +
freebsd-to-rtems.py | 1 +
freebsd/kern/init_main.c | 7 +
freebsd/kern/kern_proc.c | 2086 ++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 2095 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
index 86758af..ce7a47d 100644
--- a/Makefile
+++ b/Makefile
@@ -370,6 +370,7 @@ C_FILES += freebsd/kern/subr_rman.c
C_FILES += freebsd/kern/subr_module.c
C_FILES += freebsd/libkern/inet_ntoa.c
C_FILES += freebsd/kern/kern_prot.c
+C_FILES += freebsd/kern/kern_proc.c
C_FILES += freebsd/kern/kern_time.c
C_FILES += freebsd/kern/kern_event.c
C_FILES += freebsd/netinet/tcp_hostcache.c
diff --git a/freebsd-to-rtems.py b/freebsd-to-rtems.py
index 0b4ed85..c18eee4 100755
--- a/freebsd-to-rtems.py
+++ b/freebsd-to-rtems.py
@@ -1221,6 +1221,7 @@ devNic.addSourceFiles(
'kern/subr_module.c',
'libkern/inet_ntoa.c',
'kern/kern_prot.c',
+ 'kern/kern_proc.c',
'kern/kern_time.c',
'kern/kern_event.c',
'netinet/tcp_hostcache.c',
diff --git a/freebsd/kern/init_main.c b/freebsd/kern/init_main.c
index 540e0cb..ada7377 100644
--- a/freebsd/kern/init_main.c
+++ b/freebsd/kern/init_main.c
@@ -183,6 +183,7 @@ mi_startup(void)
struct sysinit **sysinit_end = NULL;
#endif /* __rtems__ */
+#define VERBOSE_SYSINIT
#if defined(VERBOSE_SYSINIT)
int last;
int verbose;
@@ -393,6 +394,7 @@ struct sysentvec null_sysvec = {
.sv_fetch_syscall_args = null_fetch_syscall_args,
.sv_syscallnames = NULL,
};
+#endif /* __rtems__ */
/*
***************************************************************************
@@ -411,6 +413,7 @@ struct sysentvec null_sysvec = {
static void
proc0_init(void *dummy __unused)
{
+#ifndef __rtems__
struct proc *p;
unsigned i;
struct thread *td;
@@ -424,11 +427,13 @@ proc0_init(void *dummy __unused)
*/
p->p_magic = P_MAGIC;
p->p_osrel = osreldate;
+#endif /* __rtems__ */
/*
* Initialize thread and process structures.
*/
procinit(); /* set up proc zone */
+#ifndef __rtems__
threadinit(); /* set up UMA zones */
/*
@@ -558,9 +563,11 @@ proc0_init(void *dummy __unused)
* Charge root for one process.
*/
(void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
+#endif /* __rtems__ */
}
SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL);
+#ifndef __rtems__
/* ARGSUSED*/
static void
proc0_post(void *dummy __unused)
diff --git a/freebsd/kern/kern_proc.c b/freebsd/kern/kern_proc.c
new file mode 100644
index 0000000..a646aa3
--- /dev/null
+++ b/freebsd/kern/kern_proc.c
@@ -0,0 +1,2086 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 1982, 1986, 1989, 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)kern_proc.c 8.7 (Berkeley) 2/14/95
+ */
+
+#include <freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <freebsd/local/opt_compat.h>
+#include <freebsd/local/opt_ddb.h>
+#include <freebsd/local/opt_kdtrace.h>
+#include <freebsd/local/opt_ktrace.h>
+#ifndef __rtems__
+#include <freebsd/local/opt_kstack_pages.h>
+#include <freebsd/local/opt_stack.h>
+#endif /* __rtems__ */
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h>
+#include <freebsd/sys/kernel.h>
+#include <freebsd/sys/limits.h>
+#include <freebsd/sys/lock.h>
+#include <freebsd/sys/malloc.h>
+#include <freebsd/sys/mount.h>
+#include <freebsd/sys/mutex.h>
+#include <freebsd/sys/proc.h>
+#include <freebsd/sys/refcount.h>
+#include <freebsd/sys/sbuf.h>
+#include <freebsd/sys/sysent.h>
+#include <freebsd/sys/sched.h>
+#include <freebsd/sys/smp.h>
+#ifndef __rtems__
+#include <freebsd/sys/stack.h>
+#include <freebsd/sys/sysctl.h>
+#include <freebsd/sys/filedesc.h>
+#include <freebsd/sys/tty.h>
+#include <freebsd/sys/signalvar.h>
+#include <freebsd/sys/sdt.h>
+#include <freebsd/sys/sx.h>
+#include <freebsd/sys/user.h>
+#endif /* __rtems__ */
+#include <freebsd/sys/jail.h>
+#include <freebsd/sys/vnode.h>
+#include <freebsd/sys/eventhandler.h>
+#ifdef KTRACE
+#include <freebsd/sys/uio.h>
+#include <freebsd/sys/ktrace.h>
+#endif
+
+#ifdef DDB
+#include <freebsd/ddb/ddb.h>
+#endif
+
+#ifndef __rtems__
+#include <freebsd/vm/vm.h>
+#include <freebsd/vm/vm_extern.h>
+#include <freebsd/vm/pmap.h>
+#include <freebsd/vm/vm_map.h>
+#include <freebsd/vm/vm_object.h>
+#include <freebsd/vm/uma.h>
+
+#ifdef COMPAT_FREEBSD32
+#include <freebsd/compat/freebsd32/freebsd32.h>
+#include <freebsd/compat/freebsd32/freebsd32_util.h>
+#endif
+#endif /* __rtems__ */
+
+#ifndef __rtems__
+SDT_PROVIDER_DEFINE(proc);
+SDT_PROBE_DEFINE(proc, kernel, ctor, entry);
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 0, "struct proc *");
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 1, "int");
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 2, "void *");
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, entry, 3, "int");
+SDT_PROBE_DEFINE(proc, kernel, ctor, return);
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 0, "struct proc *");
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 1, "int");
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 2, "void *");
+SDT_PROBE_ARGTYPE(proc, kernel, ctor, return, 3, "int");
+SDT_PROBE_DEFINE(proc, kernel, dtor, entry);
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 0, "struct proc *");
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 1, "int");
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 2, "void *");
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, entry, 3, "struct thread *");
+SDT_PROBE_DEFINE(proc, kernel, dtor, return);
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, return, 0, "struct proc *");
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, return, 1, "int");
+SDT_PROBE_ARGTYPE(proc, kernel, dtor, return, 2, "void *");
+SDT_PROBE_DEFINE(proc, kernel, init, entry);
+SDT_PROBE_ARGTYPE(proc, kernel, init, entry, 0, "struct proc *");
+SDT_PROBE_ARGTYPE(proc, kernel, init, entry, 1, "int");
+SDT_PROBE_ARGTYPE(proc, kernel, init, entry, 2, "int");
+SDT_PROBE_DEFINE(proc, kernel, init, return);
+SDT_PROBE_ARGTYPE(proc, kernel, init, return, 0, "struct proc *");
+SDT_PROBE_ARGTYPE(proc, kernel, init, return, 1, "int");
+SDT_PROBE_ARGTYPE(proc, kernel, init, return, 2, "int");
+
+MALLOC_DEFINE(M_PGRP, "pgrp", "process group header");
+MALLOC_DEFINE(M_SESSION, "session", "session header");
+static MALLOC_DEFINE(M_PROC, "proc", "Proc structures");
+MALLOC_DEFINE(M_SUBPROC, "subproc", "Proc sub-structures");
+
+static void doenterpgrp(struct proc *, struct pgrp *);
+static void orphanpg(struct pgrp *pg);
+static void fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp);
+static void fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp);
+static void fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp,
+ int preferthread);
+static void pgadjustjobc(struct pgrp *pgrp, int entering);
+static void pgdelete(struct pgrp *);
+static int proc_ctor(void *mem, int size, void *arg, int flags);
+static void proc_dtor(void *mem, int size, void *arg);
+static int proc_init(void *mem, int size, int flags);
+static void proc_fini(void *mem, int size);
+static void pargs_free(struct pargs *pa);
+
+/*
+ * Other process lists
+ */
+struct pidhashhead *pidhashtbl;
+u_long pidhash;
+struct pgrphashhead *pgrphashtbl;
+u_long pgrphash;
+struct proclist allproc;
+struct proclist zombproc;
+struct sx allproc_lock;
+struct sx proctree_lock;
+struct mtx ppeers_lock;
+uma_zone_t proc_zone;
+
+int kstack_pages = KSTACK_PAGES;
+SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0,
+ "Kernel stack size in pages");
+
+CTASSERT(sizeof(struct kinfo_proc) == KINFO_PROC_SIZE);
+#ifdef COMPAT_FREEBSD32
+CTASSERT(sizeof(struct kinfo_proc32) == KINFO_PROC32_SIZE);
+#endif
+#endif /* __rtems__ */
+
+/*
+ * Initialize global process hashing structures.
+ */
+void
+procinit()
+{
+#ifndef __rtems__
+ sx_init(&allproc_lock, "allproc");
+ sx_init(&proctree_lock, "proctree");
+ mtx_init(&ppeers_lock, "p_peers", NULL, MTX_DEF);
+ LIST_INIT(&allproc);
+ LIST_INIT(&zombproc);
+ pidhashtbl = hashinit(maxproc / 4, M_PROC, &pidhash);
+ pgrphashtbl = hashinit(maxproc / 4, M_PROC, &pgrphash);
+ proc_zone = uma_zcreate("PROC", sched_sizeof_proc(),
+ proc_ctor, proc_dtor, proc_init, proc_fini,
+ UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
+#endif /* __rtems__ */
+ uihashinit();
+}
+
+#ifndef __rtems__
+/*
+ * Prepare a proc for use.
+ */
+static int
+proc_ctor(void *mem, int size, void *arg, int flags)
+{
+ struct proc *p;
+
+ p = (struct proc *)mem;
+ SDT_PROBE(proc, kernel, ctor , entry, p, size, arg, flags, 0);
+ EVENTHANDLER_INVOKE(process_ctor, p);
+ SDT_PROBE(proc, kernel, ctor , return, p, size, arg, flags, 0);
+ return (0);
+}
+
+/*
+ * Reclaim a proc after use.
+ */
+static void
+proc_dtor(void *mem, int size, void *arg)
+{
+ struct proc *p;
+ struct thread *td;
+
+ /* INVARIANTS checks go here */
+ p = (struct proc *)mem;
+ td = FIRST_THREAD_IN_PROC(p);
+ SDT_PROBE(proc, kernel, dtor, entry, p, size, arg, td, 0);
+ if (td != NULL) {
+#ifdef INVARIANTS
+ KASSERT((p->p_numthreads == 1),
+ ("bad number of threads in exiting process"));
+ KASSERT(STAILQ_EMPTY(&p->p_ktr), ("proc_dtor: non-empty p_ktr"));
+#endif
+ /* Free all OSD associated to this thread. */
+ osd_thread_exit(td);
+ }
+ EVENTHANDLER_INVOKE(process_dtor, p);
+ if (p->p_ksi != NULL)
+ KASSERT(! KSI_ONQ(p->p_ksi), ("SIGCHLD queue"));
+ SDT_PROBE(proc, kernel, dtor, return, p, size, arg, 0, 0);
+}
+
+/*
+ * Initialize type-stable parts of a proc (when newly created).
+ */
+static int
+proc_init(void *mem, int size, int flags)
+{
+ struct proc *p;
+
+ p = (struct proc *)mem;
+ SDT_PROBE(proc, kernel, init, entry, p, size, flags, 0, 0);
+ p->p_sched = (struct p_sched *)&p[1];
+ bzero(&p->p_mtx, sizeof(struct mtx));
+ mtx_init(&p->p_mtx, "process lock", NULL, MTX_DEF | MTX_DUPOK);
+ mtx_init(&p->p_slock, "process slock", NULL, MTX_SPIN | MTX_RECURSE);
+ cv_init(&p->p_pwait, "ppwait");
+ TAILQ_INIT(&p->p_threads); /* all threads in proc */
+ EVENTHANDLER_INVOKE(process_init, p);
+ p->p_stats = pstats_alloc();
+ SDT_PROBE(proc, kernel, init, return, p, size, flags, 0, 0);
+ return (0);
+}
+
+/*
+ * UMA should ensure that this function is never called.
+ * Freeing a proc structure would violate type stability.
+ */
+static void
+proc_fini(void *mem, int size)
+{
+#ifdef notnow
+ struct proc *p;
+
+ p = (struct proc *)mem;
+ EVENTHANDLER_INVOKE(process_fini, p);
+ pstats_free(p->p_stats);
+ thread_free(FIRST_THREAD_IN_PROC(p));
+ mtx_destroy(&p->p_mtx);
+ if (p->p_ksi != NULL)
+ ksiginfo_free(p->p_ksi);
+#else
+ panic("proc reclaimed");
+#endif
+}
+
+/*
+ * Is p an inferior of the current process?
+ */
+int
+inferior(p)
+ register struct proc *p;
+{
+
+ sx_assert(&proctree_lock, SX_LOCKED);
+ for (; p != curproc; p = p->p_pptr)
+ if (p->p_pid == 0)
+ return (0);
+ return (1);
+}
+
+/*
+ * Locate a process by number; return only "live" processes -- i.e., neither
+ * zombies nor newly born but incompletely initialized processes. By not
+ * returning processes in the PRS_NEW state, we allow callers to avoid
+ * testing for that condition to avoid dereferencing p_ucred, et al.
+ */
+struct proc *
+pfind(pid)
+ register pid_t pid;
+{
+ register struct proc *p;
+
+ sx_slock(&allproc_lock);
+ LIST_FOREACH(p, PIDHASH(pid), p_hash)
+ if (p->p_pid == pid) {
+ if (p->p_state == PRS_NEW) {
+ p = NULL;
+ break;
+ }
+ PROC_LOCK(p);
+ break;
+ }
+ sx_sunlock(&allproc_lock);
+ return (p);
+}
+
+/*
+ * Locate a process group by number.
+ * The caller must hold proctree_lock.
+ */
+struct pgrp *
+pgfind(pgid)
+ register pid_t pgid;
+{
+ register struct pgrp *pgrp;
+
+ sx_assert(&proctree_lock, SX_LOCKED);
+
+ LIST_FOREACH(pgrp, PGRPHASH(pgid), pg_hash) {
+ if (pgrp->pg_id == pgid) {
+ PGRP_LOCK(pgrp);
+ return (pgrp);
+ }
+ }
+ return (NULL);
+}
+
+/*
+ * Create a new process group.
+ * pgid must be equal to the pid of p.
+ * Begin a new session if required.
+ */
+int
+enterpgrp(p, pgid, pgrp, sess)
+ register struct proc *p;
+ pid_t pgid;
+ struct pgrp *pgrp;
+ struct session *sess;
+{
+ struct pgrp *pgrp2;
+
+ sx_assert(&proctree_lock, SX_XLOCKED);
+
+ KASSERT(pgrp != NULL, ("enterpgrp: pgrp == NULL"));
+ KASSERT(p->p_pid == pgid,
+ ("enterpgrp: new pgrp and pid != pgid"));
+
+ pgrp2 = pgfind(pgid);
+
+ KASSERT(pgrp2 == NULL,
+ ("enterpgrp: pgrp with pgid exists"));
+ KASSERT(!SESS_LEADER(p),
+ ("enterpgrp: session leader attempted setpgrp"));
+
+ mtx_init(&pgrp->pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
+
+ if (sess != NULL) {
+ /*
+ * new session
+ */
+ mtx_init(&sess->s_mtx, "session", NULL, MTX_DEF);
+ PROC_LOCK(p);
+ p->p_flag &= ~P_CONTROLT;
+ PROC_UNLOCK(p);
+ PGRP_LOCK(pgrp);
+ sess->s_leader = p;
+ sess->s_sid = p->p_pid;
+ refcount_init(&sess->s_count, 1);
+ sess->s_ttyvp = NULL;
+ sess->s_ttyp = NULL;
+ bcopy(p->p_session->s_login, sess->s_login,
+ sizeof(sess->s_login));
+ pgrp->pg_session = sess;
+ KASSERT(p == curproc,
+ ("enterpgrp: mksession and p != curproc"));
+ } else {
+ pgrp->pg_session = p->p_session;
+ sess_hold(pgrp->pg_session);
+ PGRP_LOCK(pgrp);
+ }
+ pgrp->pg_id = pgid;
+ LIST_INIT(&pgrp->pg_members);
+
+ /*
+ * As we have an exclusive lock of proctree_lock,
+ * this should not deadlock.
+ */
+ LIST_INSERT_HEAD(PGRPHASH(pgid), pgrp, pg_hash);
+ pgrp->pg_jobc = 0;
+ SLIST_INIT(&pgrp->pg_sigiolst);
+ PGRP_UNLOCK(pgrp);
+
+ doenterpgrp(p, pgrp);
+
+ return (0);
+}
+
+/*
+ * Move p to an existing process group
+ */
+int
+enterthispgrp(p, pgrp)
+ register struct proc *p;
+ struct pgrp *pgrp;
+{
+
+ sx_assert(&proctree_lock, SX_XLOCKED);
+ PROC_LOCK_ASSERT(p, MA_NOTOWNED);
+ PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
+ PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
+ SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
+ KASSERT(pgrp->pg_session == p->p_session,
+ ("%s: pgrp's session %p, p->p_session %p.\n",
+ __func__,
+ pgrp->pg_session,
+ p->p_session));
+ KASSERT(pgrp != p->p_pgrp,
+ ("%s: p belongs to pgrp.", __func__));
+
+ doenterpgrp(p, pgrp);
+
+ return (0);
+}
+
+/*
+ * Move p to a process group
+ */
+static void
+doenterpgrp(p, pgrp)
+ struct proc *p;
+ struct pgrp *pgrp;
+{
+ struct pgrp *savepgrp;
+
+ sx_assert(&proctree_lock, SX_XLOCKED);
+ PROC_LOCK_ASSERT(p, MA_NOTOWNED);
+ PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
+ PGRP_LOCK_ASSERT(p->p_pgrp, MA_NOTOWNED);
+ SESS_LOCK_ASSERT(p->p_session, MA_NOTOWNED);
+
+ savepgrp = p->p_pgrp;
+
+ /*
+ * Adjust eligibility of affected pgrps to participate in job control.
+ * Increment eligibility counts before decrementing, otherwise we
+ * could reach 0 spuriously during the first call.
+ */
+ fixjobc(p, pgrp, 1);
+ fixjobc(p, p->p_pgrp, 0);
+
+ PGRP_LOCK(pgrp);
+ PGRP_LOCK(savepgrp);
+ PROC_LOCK(p);
+ LIST_REMOVE(p, p_pglist);
+ p->p_pgrp = pgrp;
+ PROC_UNLOCK(p);
+ LIST_INSERT_HEAD(&pgrp->pg_members, p, p_pglist);
+ PGRP_UNLOCK(savepgrp);
+ PGRP_UNLOCK(pgrp);
+ if (LIST_EMPTY(&savepgrp->pg_members))
+ pgdelete(savepgrp);
+}
+
+/*
+ * remove process from process group
+ */
+int
+leavepgrp(p)
+ register struct proc *p;
+{
+ struct pgrp *savepgrp;
+
+ sx_assert(&proctree_lock, SX_XLOCKED);
+ savepgrp = p->p_pgrp;
+ PGRP_LOCK(savepgrp);
+ PROC_LOCK(p);
+ LIST_REMOVE(p, p_pglist);
+ p->p_pgrp = NULL;
+ PROC_UNLOCK(p);
+ PGRP_UNLOCK(savepgrp);
+ if (LIST_EMPTY(&savepgrp->pg_members))
+ pgdelete(savepgrp);
+ return (0);
+}
+
+/*
+ * delete a process group
+ */
+static void
+pgdelete(pgrp)
+ register struct pgrp *pgrp;
+{
+ struct session *savesess;
+ struct tty *tp;
+
+ sx_assert(&proctree_lock, SX_XLOCKED);
+ PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
+ SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
+
+ /*
+ * Reset any sigio structures pointing to us as a result of
+ * F_SETOWN with our pgid.
+ */
+ funsetownlst(&pgrp->pg_sigiolst);
+
+ PGRP_LOCK(pgrp);
+ tp = pgrp->pg_session->s_ttyp;
+ LIST_REMOVE(pgrp, pg_hash);
+ savesess = pgrp->pg_session;
+ PGRP_UNLOCK(pgrp);
+
+ /* Remove the reference to the pgrp before deallocating it. */
+ if (tp != NULL) {
+ tty_lock(tp);
+ tty_rel_pgrp(tp, pgrp);
+ }
+
+ mtx_destroy(&pgrp->pg_mtx);
+ free(pgrp, M_PGRP);
+ sess_release(savesess);
+}
+
+static void
+pgadjustjobc(pgrp, entering)
+ struct pgrp *pgrp;
+ int entering;
+{
+
+ PGRP_LOCK(pgrp);
+ if (entering)
+ pgrp->pg_jobc++;
+ else {
+ --pgrp->pg_jobc;
+ if (pgrp->pg_jobc == 0)
+ orphanpg(pgrp);
+ }
+ PGRP_UNLOCK(pgrp);
+}
+
+/*
+ * Adjust pgrp jobc counters when specified process changes process group.
+ * We count the number of processes in each process group that "qualify"
+ * the group for terminal job control (those with a parent in a different
+ * process group of the same session). If that count reaches zero, the
+ * process group becomes orphaned. Check both the specified process'
+ * process group and that of its children.
+ * entering == 0 => p is leaving specified group.
+ * entering == 1 => p is entering specified group.
+ */
+void
+fixjobc(p, pgrp, entering)
+ register struct proc *p;
+ register struct pgrp *pgrp;
+ int entering;
+{
+ register struct pgrp *hispgrp;
+ register struct session *mysession;
+
+ sx_assert(&proctree_lock, SX_LOCKED);
+ PROC_LOCK_ASSERT(p, MA_NOTOWNED);
+ PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED);
+ SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED);
+
+ /*
+ * Check p's parent to see whether p qualifies its own process
+ * group; if so, adjust count for p's process group.
+ */
+ mysession = pgrp->pg_session;
+ if ((hispgrp = p->p_pptr->p_pgrp) != pgrp &&
+ hispgrp->pg_session == mysession)
+ pgadjustjobc(pgrp, entering);
+
+ /*
+ * Check this process' children to see whether they qualify
+ * their process groups; if so, adjust counts for children's
+ * process groups.
+ */
+ LIST_FOREACH(p, &p->p_children, p_sibling) {
+ hispgrp = p->p_pgrp;
+ if (hispgrp == pgrp ||
+ hispgrp->pg_session != mysession)
+ continue;
+ PROC_LOCK(p);
+ if (p->p_state == PRS_ZOMBIE) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ PROC_UNLOCK(p);
+ pgadjustjobc(hispgrp, entering);
+ }
+}
+
+/*
+ * A process group has become orphaned;
+ * if there are any stopped processes in the group,
+ * hang-up all process in that group.
+ */
+static void
+orphanpg(pg)
+ struct pgrp *pg;
+{
+ register struct proc *p;
+
+ PGRP_LOCK_ASSERT(pg, MA_OWNED);
+
+ LIST_FOREACH(p, &pg->pg_members, p_pglist) {
+ PROC_LOCK(p);
+ if (P_SHOULDSTOP(p)) {
+ PROC_UNLOCK(p);
+ LIST_FOREACH(p, &pg->pg_members, p_pglist) {
+ PROC_LOCK(p);
+ psignal(p, SIGHUP);
+ psignal(p, SIGCONT);
+ PROC_UNLOCK(p);
+ }
+ return;
+ }
+ PROC_UNLOCK(p);
+ }
+}
+
+void
+sess_hold(struct session *s)
+{
+
+ refcount_acquire(&s->s_count);
+}
+
+void
+sess_release(struct session *s)
+{
+
+ if (refcount_release(&s->s_count)) {
+ if (s->s_ttyp != NULL) {
+ tty_lock(s->s_ttyp);
+ tty_rel_sess(s->s_ttyp, s);
+ }
+ mtx_destroy(&s->s_mtx);
+ free(s, M_SESSION);
+ }
+}
+
+#include <freebsd/local/opt_ddb.h>
+#ifdef DDB
+#include <freebsd/ddb/ddb.h>
+
+DB_SHOW_COMMAND(pgrpdump, pgrpdump)
+{
+ register struct pgrp *pgrp;
+ register struct proc *p;
+ register int i;
+
+ for (i = 0; i <= pgrphash; i++) {
+ if (!LIST_EMPTY(&pgrphashtbl[i])) {
+ printf("\tindx %d\n", i);
+ LIST_FOREACH(pgrp, &pgrphashtbl[i], pg_hash) {
+ printf(
+ "\tpgrp %p, pgid %ld, sess %p, sesscnt %d, mem %p\n",
+ (void *)pgrp, (long)pgrp->pg_id,
+ (void *)pgrp->pg_session,
+ pgrp->pg_session->s_count,
+ (void *)LIST_FIRST(&pgrp->pg_members));
+ LIST_FOREACH(p, &pgrp->pg_members, p_pglist) {
+ printf("\t\tpid %ld addr %p pgrp %p\n",
+ (long)p->p_pid, (void *)p,
+ (void *)p->p_pgrp);
+ }
+ }
+ }
+ }
+}
+#endif /* DDB */
+
+/*
+ * Calculate the kinfo_proc members which contain process-wide
+ * informations.
+ * Must be called with the target process locked.
+ */
+static void
+fill_kinfo_aggregate(struct proc *p, struct kinfo_proc *kp)
+{
+ struct thread *td;
+
+ PROC_LOCK_ASSERT(p, MA_OWNED);
+
+ kp->ki_estcpu = 0;
+ kp->ki_pctcpu = 0;
+ FOREACH_THREAD_IN_PROC(p, td) {
+ thread_lock(td);
+ kp->ki_pctcpu += sched_pctcpu(td);
+ kp->ki_estcpu += td->td_estcpu;
+ thread_unlock(td);
+ }
+}
+
+/*
+ * Clear kinfo_proc and fill in any information that is common
+ * to all threads in the process.
+ * Must be called with the target process locked.
+ */
+static void
+fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp)
+{
+ struct thread *td0;
+ struct tty *tp;
+ struct session *sp;
+ struct ucred *cred;
+ struct sigacts *ps;
+
+ PROC_LOCK_ASSERT(p, MA_OWNED);
+ bzero(kp, sizeof(*kp));
+
+ kp->ki_structsize = sizeof(*kp);
+ kp->ki_paddr = p;
+ kp->ki_addr =/* p->p_addr; */0; /* XXX */
+ kp->ki_args = p->p_args;
+ kp->ki_textvp = p->p_textvp;
+#ifdef KTRACE
+ kp->ki_tracep = p->p_tracevp;
+ mtx_lock(&ktrace_mtx);
+ kp->ki_traceflag = p->p_traceflag;
+ mtx_unlock(&ktrace_mtx);
+#endif
+ kp->ki_fd = p->p_fd;
+ kp->ki_vmspace = p->p_vmspace;
+ kp->ki_flag = p->p_flag;
+ cred = p->p_ucred;
+ if (cred) {
+ kp->ki_uid = cred->cr_uid;
+ kp->ki_ruid = cred->cr_ruid;
+ kp->ki_svuid = cred->cr_svuid;
+ kp->ki_cr_flags = cred->cr_flags;
+ /* XXX bde doesn't like KI_NGROUPS */
+ if (cred->cr_ngroups > KI_NGROUPS) {
+ kp->ki_ngroups = KI_NGROUPS;
+ kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW;
+ } else
+ kp->ki_ngroups = cred->cr_ngroups;
+ bcopy(cred->cr_groups, kp->ki_groups,
+ kp->ki_ngroups * sizeof(gid_t));
+ kp->ki_rgid = cred->cr_rgid;
+ kp->ki_svgid = cred->cr_svgid;
+ /* If jailed(cred), emulate the old P_JAILED flag. */
+ if (jailed(cred)) {
+ kp->ki_flag |= P_JAILED;
+ /* If inside the jail, use 0 as a jail ID. */
+ if (cred->cr_prison != curthread->td_ucred->cr_prison)
+ kp->ki_jid = cred->cr_prison->pr_id;
+ }
+ }
+ ps = p->p_sigacts;
+ if (ps) {
+ mtx_lock(&ps->ps_mtx);
+ kp->ki_sigignore = ps->ps_sigignore;
+ kp->ki_sigcatch = ps->ps_sigcatch;
+ mtx_unlock(&ps->ps_mtx);
+ }
+ PROC_SLOCK(p);
+ if (p->p_state != PRS_NEW &&
+ p->p_state != PRS_ZOMBIE &&
+ p->p_vmspace != NULL) {
+ struct vmspace *vm = p->p_vmspace;
+
+ kp->ki_size = vm->vm_map.size;
+ kp->ki_rssize = vmspace_resident_count(vm); /*XXX*/
+ FOREACH_THREAD_IN_PROC(p, td0) {
+ if (!TD_IS_SWAPPED(td0))
+ kp->ki_rssize += td0->td_kstack_pages;
+ }
+ kp->ki_swrss = vm->vm_swrss;
+ kp->ki_tsize = vm->vm_tsize;
+ kp->ki_dsize = vm->vm_dsize;
+ kp->ki_ssize = vm->vm_ssize;
+ } else if (p->p_state == PRS_ZOMBIE)
+ kp->ki_stat = SZOMB;
+ if (kp->ki_flag & P_INMEM)
+ kp->ki_sflag = PS_INMEM;
+ else
+ kp->ki_sflag = 0;
+ /* Calculate legacy swtime as seconds since 'swtick'. */
+ kp->ki_swtime = (ticks - p->p_swtick) / hz;
+ kp->ki_pid = p->p_pid;
+ kp->ki_nice = p->p_nice;
+ rufetch(p, &kp->ki_rusage);
+ kp->ki_runtime = cputick2usec(p->p_rux.rux_runtime);
+ PROC_SUNLOCK(p);
+ if ((p->p_flag & P_INMEM) && p->p_stats != NULL) {
+ kp->ki_start = p->p_stats->p_start;
+ timevaladd(&kp->ki_start, &boottime);
+ PROC_SLOCK(p);
+ calcru(p, &kp->ki_rusage.ru_utime, &kp->ki_rusage.ru_stime);
+ PROC_SUNLOCK(p);
+ calccru(p, &kp->ki_childutime, &kp->ki_childstime);
+
+ /* Some callers want child-times in a single value */
+ kp->ki_childtime = kp->ki_childstime;
+ timevaladd(&kp->ki_childtime, &kp->ki_childutime);
+ }
+ tp = NULL;
+ if (p->p_pgrp) {
+ kp->ki_pgid = p->p_pgrp->pg_id;
+ kp->ki_jobc = p->p_pgrp->pg_jobc;
+ sp = p->p_pgrp->pg_session;
+
+ if (sp != NULL) {
+ kp->ki_sid = sp->s_sid;
+ SESS_LOCK(sp);
+ strlcpy(kp->ki_login, sp->s_login,
+ sizeof(kp->ki_login));
+ if (sp->s_ttyvp)
+ kp->ki_kiflag |= KI_CTTY;
+ if (SESS_LEADER(p))
+ kp->ki_kiflag |= KI_SLEADER;
+ /* XXX proctree_lock */
+ tp = sp->s_ttyp;
+ SESS_UNLOCK(sp);
+ }
+ }
+ if ((p->p_flag & P_CONTROLT) && tp != NULL) {
+ kp->ki_tdev = tty_udev(tp);
+ kp->ki_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
+ if (tp->t_session)
+ kp->ki_tsid = tp->t_session->s_sid;
+ } else
+ kp->ki_tdev = NODEV;
+ if (p->p_comm[0] != '\0')
+ strlcpy(kp->ki_comm, p->p_comm, sizeof(kp->ki_comm));
+ if (p->p_sysent && p->p_sysent->sv_name != NULL &&
+ p->p_sysent->sv_name[0] != '\0')
+ strlcpy(kp->ki_emul, p->p_sysent->sv_name, sizeof(kp->ki_emul));
+ kp->ki_siglist = p->p_siglist;
+ kp->ki_xstat = p->p_xstat;
+ kp->ki_acflag = p->p_acflag;
+ kp->ki_lock = p->p_lock;
+ if (p->p_pptr)
+ kp->ki_ppid = p->p_pptr->p_pid;
+}
+
+/*
+ * Fill in information that is thread specific. Must be called with
+ * target process locked. If 'preferthread' is set, overwrite certain
+ * process-related fields that are maintained for both threads and
+ * processes.
+ */
+static void
+fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp, int preferthread)
+{
+ struct proc *p;
+
+ p = td->td_proc;
+ kp->ki_tdaddr = td;
+ PROC_LOCK_ASSERT(p, MA_OWNED);
+
+ thread_lock(td);
+ if (td->td_wmesg != NULL)
+ strlcpy(kp->ki_wmesg, td->td_wmesg, sizeof(kp->ki_wmesg));
+ else
+ bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg));
+ strlcpy(kp->ki_ocomm, td->td_name, sizeof(kp->ki_ocomm));
+ if (TD_ON_LOCK(td)) {
+ kp->ki_kiflag |= KI_LOCKBLOCK;
+ strlcpy(kp->ki_lockname, td->td_lockname,
+ sizeof(kp->ki_lockname));
+ } else {
+ kp->ki_kiflag &= ~KI_LOCKBLOCK;
+ bzero(kp->ki_lockname, sizeof(kp->ki_lockname));
+ }
+
+ if (p->p_state == PRS_NORMAL) { /* approximate. */
+ if (TD_ON_RUNQ(td) ||
+ TD_CAN_RUN(td) ||
+ TD_IS_RUNNING(td)) {
+ kp->ki_stat = SRUN;
+ } else if (P_SHOULDSTOP(p)) {
+ kp->ki_stat = SSTOP;
+ } else if (TD_IS_SLEEPING(td)) {
+ kp->ki_stat = SSLEEP;
+ } else if (TD_ON_LOCK(td)) {
+ kp->ki_stat = SLOCK;
+ } else {
+ kp->ki_stat = SWAIT;
+ }
+ } else if (p->p_state == PRS_ZOMBIE) {
+ kp->ki_stat = SZOMB;
+ } else {
+ kp->ki_stat = SIDL;
+ }
+
+ /* Things in the thread */
+ kp->ki_wchan = td->td_wchan;
+ kp->ki_pri.pri_level = td->td_priority;
+ kp->ki_pri.pri_native = td->td_base_pri;
+ kp->ki_lastcpu = td->td_lastcpu;
+ kp->ki_oncpu = td->td_oncpu;
+ kp->ki_tdflags = td->td_flags;
+ kp->ki_tid = td->td_tid;
+ kp->ki_numthreads = p->p_numthreads;
+ kp->ki_pcb = td->td_pcb;
+ kp->ki_kstack = (void *)td->td_kstack;
+ kp->ki_slptime = (ticks - td->td_slptick) / hz;
+ kp->ki_pri.pri_class = td->td_pri_class;
+ kp->ki_pri.pri_user = td->td_user_pri;
+
+ if (preferthread) {
+ kp->ki_runtime = cputick2usec(td->td_rux.rux_runtime);
+ kp->ki_pctcpu = sched_pctcpu(td);
+ kp->ki_estcpu = td->td_estcpu;
+ }
+
+ /* We can't get this anymore but ps etc never used it anyway. */
+ kp->ki_rqindex = 0;
+
+ if (preferthread)
+ kp->ki_siglist = td->td_siglist;
+ kp->ki_sigmask = td->td_sigmask;
+ thread_unlock(td);
+}
+
+/*
+ * Fill in a kinfo_proc structure for the specified process.
+ * Must be called with the target process locked.
+ */
+void
+fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp)
+{
+
+ MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
+
+ fill_kinfo_proc_only(p, kp);
+ fill_kinfo_thread(FIRST_THREAD_IN_PROC(p), kp, 0);
+ fill_kinfo_aggregate(p, kp);
+}
+
+struct pstats *
+pstats_alloc(void)
+{
+
+ return (malloc(sizeof(struct pstats), M_SUBPROC, M_ZERO|M_WAITOK));
+}
+
+/*
+ * Copy parts of p_stats; zero the rest of p_stats (statistics).
+ */
+void
+pstats_fork(struct pstats *src, struct pstats *dst)
+{
+
+ bzero(&dst->pstat_startzero,
+ __rangeof(struct pstats, pstat_startzero, pstat_endzero));
+ bcopy(&src->pstat_startcopy, &dst->pstat_startcopy,
+ __rangeof(struct pstats, pstat_startcopy, pstat_endcopy));
+}
+
+void
+pstats_free(struct pstats *ps)
+{
+
+ free(ps, M_SUBPROC);
+}
+
+/*
+ * Locate a zombie process by number
+ */
+struct proc *
+zpfind(pid_t pid)
+{
+ struct proc *p;
+
+ sx_slock(&allproc_lock);
+ LIST_FOREACH(p, &zombproc, p_list)
+ if (p->p_pid == pid) {
+ PROC_LOCK(p);
+ break;
+ }
+ sx_sunlock(&allproc_lock);
+ return (p);
+}
+
+#define KERN_PROC_ZOMBMASK 0x3
+#define KERN_PROC_NOTHREADS 0x4
+
+#ifdef COMPAT_FREEBSD32
+
+/*
+ * This function is typically used to copy out the kernel address, so
+ * it can be replaced by assignment of zero.
+ */
+static inline uint32_t
+ptr32_trim(void *ptr)
+{
+ uintptr_t uptr;
+
+ uptr = (uintptr_t)ptr;
+ return ((uptr > UINT_MAX) ? 0 : uptr);
+}
+
+#define PTRTRIM_CP(src,dst,fld) \
+ do { (dst).fld = ptr32_trim((src).fld); } while (0)
+
+static void
+freebsd32_kinfo_proc_out(const struct kinfo_proc *ki, struct kinfo_proc32 *ki32)
+{
+ int i;
+
+ bzero(ki32, sizeof(struct kinfo_proc32));
+ ki32->ki_structsize = sizeof(struct kinfo_proc32);
+ CP(*ki, *ki32, ki_layout);
+ PTRTRIM_CP(*ki, *ki32, ki_args);
+ PTRTRIM_CP(*ki, *ki32, ki_paddr);
+ PTRTRIM_CP(*ki, *ki32, ki_addr);
+ PTRTRIM_CP(*ki, *ki32, ki_tracep);
+ PTRTRIM_CP(*ki, *ki32, ki_textvp);
+ PTRTRIM_CP(*ki, *ki32, ki_fd);
+ PTRTRIM_CP(*ki, *ki32, ki_vmspace);
+ PTRTRIM_CP(*ki, *ki32, ki_wchan);
+ CP(*ki, *ki32, ki_pid);
+ CP(*ki, *ki32, ki_ppid);
+ CP(*ki, *ki32, ki_pgid);
+ CP(*ki, *ki32, ki_tpgid);
+ CP(*ki, *ki32, ki_sid);
+ CP(*ki, *ki32, ki_tsid);
+ CP(*ki, *ki32, ki_jobc);
+ CP(*ki, *ki32, ki_tdev);
+ CP(*ki, *ki32, ki_siglist);
+ CP(*ki, *ki32, ki_sigmask);
+ CP(*ki, *ki32, ki_sigignore);
+ CP(*ki, *ki32, ki_sigcatch);
+ CP(*ki, *ki32, ki_uid);
+ CP(*ki, *ki32, ki_ruid);
+ CP(*ki, *ki32, ki_svuid);
+ CP(*ki, *ki32, ki_rgid);
+ CP(*ki, *ki32, ki_svgid);
+ CP(*ki, *ki32, ki_ngroups);
+ for (i = 0; i < KI_NGROUPS; i++)
+ CP(*ki, *ki32, ki_groups[i]);
+ CP(*ki, *ki32, ki_size);
+ CP(*ki, *ki32, ki_rssize);
+ CP(*ki, *ki32, ki_swrss);
+ CP(*ki, *ki32, ki_tsize);
+ CP(*ki, *ki32, ki_dsize);
+ CP(*ki, *ki32, ki_ssize);
+ CP(*ki, *ki32, ki_xstat);
+ CP(*ki, *ki32, ki_acflag);
+ CP(*ki, *ki32, ki_pctcpu);
+ CP(*ki, *ki32, ki_estcpu);
+ CP(*ki, *ki32, ki_slptime);
+ CP(*ki, *ki32, ki_swtime);
+ CP(*ki, *ki32, ki_runtime);
+ TV_CP(*ki, *ki32, ki_start);
+ TV_CP(*ki, *ki32, ki_childtime);
+ CP(*ki, *ki32, ki_flag);
+ CP(*ki, *ki32, ki_kiflag);
+ CP(*ki, *ki32, ki_traceflag);
+ CP(*ki, *ki32, ki_stat);
+ CP(*ki, *ki32, ki_nice);
+ CP(*ki, *ki32, ki_lock);
+ CP(*ki, *ki32, ki_rqindex);
+ CP(*ki, *ki32, ki_oncpu);
+ CP(*ki, *ki32, ki_lastcpu);
+ bcopy(ki->ki_ocomm, ki32->ki_ocomm, OCOMMLEN + 1);
+ bcopy(ki->ki_wmesg, ki32->ki_wmesg, WMESGLEN + 1);
+ bcopy(ki->ki_login, ki32->ki_login, LOGNAMELEN + 1);
+ bcopy(ki->ki_lockname, ki32->ki_lockname, LOCKNAMELEN + 1);
+ bcopy(ki->ki_comm, ki32->ki_comm, COMMLEN + 1);
+ bcopy(ki->ki_emul, ki32->ki_emul, KI_EMULNAMELEN + 1);
+ CP(*ki, *ki32, ki_cr_flags);
+ CP(*ki, *ki32, ki_jid);
+ CP(*ki, *ki32, ki_numthreads);
+ CP(*ki, *ki32, ki_tid);
+ CP(*ki, *ki32, ki_pri);
+ freebsd32_rusage_out(&ki->ki_rusage, &ki32->ki_rusage);
+ freebsd32_rusage_out(&ki->ki_rusage_ch, &ki32->ki_rusage_ch);
+ PTRTRIM_CP(*ki, *ki32, ki_pcb);
+ PTRTRIM_CP(*ki, *ki32, ki_kstack);
+ PTRTRIM_CP(*ki, *ki32, ki_udata);
+ CP(*ki, *ki32, ki_sflag);
+ CP(*ki, *ki32, ki_tdflags);
+}
+
+static int
+sysctl_out_proc_copyout(struct kinfo_proc *ki, struct sysctl_req *req)
+{
+ struct kinfo_proc32 ki32;
+ int error;
+
+ if (req->flags & SCTL_MASK32) {
+ freebsd32_kinfo_proc_out(ki, &ki32);
+ error = SYSCTL_OUT(req, &ki32, sizeof(struct kinfo_proc32));
+ } else
+ error = SYSCTL_OUT(req, ki, sizeof(struct kinfo_proc));
+ return (error);
+}
+#else
+static int
+sysctl_out_proc_copyout(struct kinfo_proc *ki, struct sysctl_req *req)
+{
+
+ return (SYSCTL_OUT(req, ki, sizeof(struct kinfo_proc)));
+}
+#endif
+
+/*
+ * Must be called with the process locked and will return with it unlocked.
+ */
+static int
+sysctl_out_proc(struct proc *p, struct sysctl_req *req, int flags)
+{
+ struct thread *td;
+ struct kinfo_proc kinfo_proc;
+ int error = 0;
+ struct proc *np;
+ pid_t pid = p->p_pid;
+
+ PROC_LOCK_ASSERT(p, MA_OWNED);
+ MPASS(FIRST_THREAD_IN_PROC(p) != NULL);
+
+ fill_kinfo_proc(p, &kinfo_proc);
+ if (flags & KERN_PROC_NOTHREADS)
+ error = sysctl_out_proc_copyout(&kinfo_proc, req);
+ else {
+ FOREACH_THREAD_IN_PROC(p, td) {
+ fill_kinfo_thread(td, &kinfo_proc, 1);
+ error = sysctl_out_proc_copyout(&kinfo_proc, req);
+ if (error)
+ break;
+ }
+ }
+ PROC_UNLOCK(p);
+ if (error)
+ return (error);
+ if (flags & KERN_PROC_ZOMBMASK)
+ np = zpfind(pid);
+ else {
+ if (pid == 0)
+ return (0);
+ np = pfind(pid);
+ }
+ if (np == NULL)
+ return (ESRCH);
+ if (np != p) {
+ PROC_UNLOCK(np);
+ return (ESRCH);
+ }
+ PROC_UNLOCK(np);
+ return (0);
+}
+
+static int
+sysctl_kern_proc(SYSCTL_HANDLER_ARGS)
+{
+ int *name = (int*) arg1;
+ u_int namelen = arg2;
+ struct proc *p;
+ int flags, doingzomb, oid_number;
+ int error = 0;
+
+ oid_number = oidp->oid_number;
+ if (oid_number != KERN_PROC_ALL &&
+ (oid_number & KERN_PROC_INC_THREAD) == 0)
+ flags = KERN_PROC_NOTHREADS;
+ else {
+ flags = 0;
+ oid_number &= ~KERN_PROC_INC_THREAD;
+ }
+ if (oid_number == KERN_PROC_PID) {
+ if (namelen != 1)
+ return (EINVAL);
+ error = sysctl_wire_old_buffer(req, 0);
+ if (error)
+ return (error);
+ p = pfind((pid_t)name[0]);
+ if (!p)
+ return (ESRCH);
+ if ((error = p_cansee(curthread, p))) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ error = sysctl_out_proc(p, req, flags);
+ return (error);
+ }
+
+ switch (oid_number) {
+ case KERN_PROC_ALL:
+ if (namelen != 0)
+ return (EINVAL);
+ break;
+ case KERN_PROC_PROC:
+ if (namelen != 0 && namelen != 1)
+ return (EINVAL);
+ break;
+ default:
+ if (namelen != 1)
+ return (EINVAL);
+ break;
+ }
+
+ if (!req->oldptr) {
+ /* overestimate by 5 procs */
+ error = SYSCTL_OUT(req, 0, sizeof (struct kinfo_proc) * 5);
+ if (error)
+ return (error);
+ }
+ error = sysctl_wire_old_buffer(req, 0);
+ if (error != 0)
+ return (error);
+ sx_slock(&allproc_lock);
+ for (doingzomb=0 ; doingzomb < 2 ; doingzomb++) {
+ if (!doingzomb)
+ p = LIST_FIRST(&allproc);
+ else
+ p = LIST_FIRST(&zombproc);
+ for (; p != 0; p = LIST_NEXT(p, p_list)) {
+ /*
+ * Skip embryonic processes.
+ */
+ PROC_SLOCK(p);
+ if (p->p_state == PRS_NEW) {
+ PROC_SUNLOCK(p);
+ continue;
+ }
+ PROC_SUNLOCK(p);
+ PROC_LOCK(p);
+ KASSERT(p->p_ucred != NULL,
+ ("process credential is NULL for non-NEW proc"));
+ /*
+ * Show a user only appropriate processes.
+ */
+ if (p_cansee(curthread, p)) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ /*
+ * TODO - make more efficient (see notes below).
+ * do by session.
+ */
+ switch (oid_number) {
+
+ case KERN_PROC_GID:
+ if (p->p_ucred->cr_gid != (gid_t)name[0]) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ break;
+
+ case KERN_PROC_PGRP:
+ /* could do this by traversing pgrp */
+ if (p->p_pgrp == NULL ||
+ p->p_pgrp->pg_id != (pid_t)name[0]) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ break;
+
+ case KERN_PROC_RGID:
+ if (p->p_ucred->cr_rgid != (gid_t)name[0]) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ break;
+
+ case KERN_PROC_SESSION:
+ if (p->p_session == NULL ||
+ p->p_session->s_sid != (pid_t)name[0]) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ break;
+
+ case KERN_PROC_TTY:
+ if ((p->p_flag & P_CONTROLT) == 0 ||
+ p->p_session == NULL) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ /* XXX proctree_lock */
+ SESS_LOCK(p->p_session);
+ if (p->p_session->s_ttyp == NULL ||
+ tty_udev(p->p_session->s_ttyp) !=
+ (dev_t)name[0]) {
+ SESS_UNLOCK(p->p_session);
+ PROC_UNLOCK(p);
+ continue;
+ }
+ SESS_UNLOCK(p->p_session);
+ break;
+
+ case KERN_PROC_UID:
+ if (p->p_ucred->cr_uid != (uid_t)name[0]) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ break;
+
+ case KERN_PROC_RUID:
+ if (p->p_ucred->cr_ruid != (uid_t)name[0]) {
+ PROC_UNLOCK(p);
+ continue;
+ }
+ break;
+
+ case KERN_PROC_PROC:
+ break;
+
+ default:
+ break;
+
+ }
+
+ error = sysctl_out_proc(p, req, flags | doingzomb);
+ if (error) {
+ sx_sunlock(&allproc_lock);
+ return (error);
+ }
+ }
+ }
+ sx_sunlock(&allproc_lock);
+ return (0);
+}
+
+struct pargs *
+pargs_alloc(int len)
+{
+ struct pargs *pa;
+
+ pa = malloc(sizeof(struct pargs) + len, M_PARGS,
+ M_WAITOK);
+ refcount_init(&pa->ar_ref, 1);
+ pa->ar_length = len;
+ return (pa);
+}
+
+static void
+pargs_free(struct pargs *pa)
+{
+
+ free(pa, M_PARGS);
+}
+
+void
+pargs_hold(struct pargs *pa)
+{
+
+ if (pa == NULL)
+ return;
+ refcount_acquire(&pa->ar_ref);
+}
+
+void
+pargs_drop(struct pargs *pa)
+{
+
+ if (pa == NULL)
+ return;
+ if (refcount_release(&pa->ar_ref))
+ pargs_free(pa);
+}
+
+/*
+ * This sysctl allows a process to retrieve the argument list or process
+ * title for another process without groping around in the address space
+ * of the other process. It also allow a process to set its own "process
+ * title to a string of its own choice.
+ */
+static int
+sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS)
+{
+ int *name = (int*) arg1;
+ u_int namelen = arg2;
+ struct pargs *newpa, *pa;
+ struct proc *p;
+ int error = 0;
+
+ if (namelen != 1)
+ return (EINVAL);
+
+ p = pfind((pid_t)name[0]);
+ if (!p)
+ return (ESRCH);
+
+ if ((error = p_cansee(curthread, p)) != 0) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+
+ if (req->newptr && curproc != p) {
+ PROC_UNLOCK(p);
+ return (EPERM);
+ }
+
+ pa = p->p_args;
+ pargs_hold(pa);
+ PROC_UNLOCK(p);
+ if (req->oldptr != NULL && pa != NULL)
+ error = SYSCTL_OUT(req, pa->ar_args, pa->ar_length);
+ pargs_drop(pa);
+ if (error != 0 || req->newptr == NULL)
+ return (error);
+
+ if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit)
+ return (ENOMEM);
+ newpa = pargs_alloc(req->newlen);
+ error = SYSCTL_IN(req, newpa->ar_args, req->newlen);
+ if (error != 0) {
+ pargs_free(newpa);
+ return (error);
+ }
+ PROC_LOCK(p);
+ pa = p->p_args;
+ p->p_args = newpa;
+ PROC_UNLOCK(p);
+ pargs_drop(pa);
+ return (0);
+}
+
+/*
+ * This sysctl allows a process to retrieve the path of the executable for
+ * itself or another process.
+ */
+static int
+sysctl_kern_proc_pathname(SYSCTL_HANDLER_ARGS)
+{
+ pid_t *pidp = (pid_t *)arg1;
+ unsigned int arglen = arg2;
+ struct proc *p;
+ struct vnode *vp;
+ char *retbuf, *freebuf;
+ int error, vfslocked;
+
+ if (arglen != 1)
+ return (EINVAL);
+ if (*pidp == -1) { /* -1 means this process */
+ p = req->td->td_proc;
+ } else {
+ p = pfind(*pidp);
+ if (p == NULL)
+ return (ESRCH);
+ if ((error = p_cansee(curthread, p)) != 0) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ }
+
+ vp = p->p_textvp;
+ if (vp == NULL) {
+ if (*pidp != -1)
+ PROC_UNLOCK(p);
+ return (0);
+ }
+ vref(vp);
+ if (*pidp != -1)
+ PROC_UNLOCK(p);
+ error = vn_fullpath(req->td, vp, &retbuf, &freebuf);
+ vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+ vrele(vp);
+ VFS_UNLOCK_GIANT(vfslocked);
+ if (error)
+ return (error);
+ error = SYSCTL_OUT(req, retbuf, strlen(retbuf) + 1);
+ free(freebuf, M_TEMP);
+ return (error);
+}
+
+static int
+sysctl_kern_proc_sv_name(SYSCTL_HANDLER_ARGS)
+{
+ struct proc *p;
+ char *sv_name;
+ int *name;
+ int namelen;
+ int error;
+
+ namelen = arg2;
+ if (namelen != 1)
+ return (EINVAL);
+
+ name = (int *)arg1;
+ if ((p = pfind((pid_t)name[0])) == NULL)
+ return (ESRCH);
+ if ((error = p_cansee(curthread, p))) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ sv_name = p->p_sysent->sv_name;
+ PROC_UNLOCK(p);
+ return (sysctl_handle_string(oidp, sv_name, 0, req));
+}
+
+#ifdef KINFO_OVMENTRY_SIZE
+CTASSERT(sizeof(struct kinfo_ovmentry) == KINFO_OVMENTRY_SIZE);
+#endif
+
+#ifdef COMPAT_FREEBSD7
+static int
+sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
+{
+ vm_map_entry_t entry, tmp_entry;
+ unsigned int last_timestamp;
+ char *fullpath, *freepath;
+ struct kinfo_ovmentry *kve;
+ struct vattr va;
+ struct ucred *cred;
+ int error, *name;
+ struct vnode *vp;
+ struct proc *p;
+ vm_map_t map;
+ struct vmspace *vm;
+
+ name = (int *)arg1;
+ if ((p = pfind((pid_t)name[0])) == NULL)
+ return (ESRCH);
+ if (p->p_flag & P_WEXIT) {
+ PROC_UNLOCK(p);
+ return (ESRCH);
+ }
+ if ((error = p_candebug(curthread, p))) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ _PHOLD(p);
+ PROC_UNLOCK(p);
+ vm = vmspace_acquire_ref(p);
+ if (vm == NULL) {
+ PRELE(p);
+ return (ESRCH);
+ }
+ kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
+
+ map = &p->p_vmspace->vm_map; /* XXXRW: More locking required? */
+ vm_map_lock_read(map);
+ for (entry = map->header.next; entry != &map->header;
+ entry = entry->next) {
+ vm_object_t obj, tobj, lobj;
+ vm_offset_t addr;
+ int vfslocked;
+
+ if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
+ continue;
+
+ bzero(kve, sizeof(*kve));
+ kve->kve_structsize = sizeof(*kve);
+
+ kve->kve_private_resident = 0;
+ obj = entry->object.vm_object;
+ if (obj != NULL) {
+ VM_OBJECT_LOCK(obj);
+ if (obj->shadow_count == 1)
+ kve->kve_private_resident =
+ obj->resident_page_count;
+ }
+ kve->kve_resident = 0;
+ addr = entry->start;
+ while (addr < entry->end) {
+ if (pmap_extract(map->pmap, addr))
+ kve->kve_resident++;
+ addr += PAGE_SIZE;
+ }
+
+ for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
+ if (tobj != obj)
+ VM_OBJECT_LOCK(tobj);
+ if (lobj != obj)
+ VM_OBJECT_UNLOCK(lobj);
+ lobj = tobj;
+ }
+
+ kve->kve_start = (void*)entry->start;
+ kve->kve_end = (void*)entry->end;
+ kve->kve_offset = (off_t)entry->offset;
+
+ if (entry->protection & VM_PROT_READ)
+ kve->kve_protection |= KVME_PROT_READ;
+ if (entry->protection & VM_PROT_WRITE)
+ kve->kve_protection |= KVME_PROT_WRITE;
+ if (entry->protection & VM_PROT_EXECUTE)
+ kve->kve_protection |= KVME_PROT_EXEC;
+
+ if (entry->eflags & MAP_ENTRY_COW)
+ kve->kve_flags |= KVME_FLAG_COW;
+ if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
+ kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
+ if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
+ kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
+
+ last_timestamp = map->timestamp;
+ vm_map_unlock_read(map);
+
+ kve->kve_fileid = 0;
+ kve->kve_fsid = 0;
+ freepath = NULL;
+ fullpath = "";
+ if (lobj) {
+ vp = NULL;
+ switch (lobj->type) {
+ case OBJT_DEFAULT:
+ kve->kve_type = KVME_TYPE_DEFAULT;
+ break;
+ case OBJT_VNODE:
+ kve->kve_type = KVME_TYPE_VNODE;
+ vp = lobj->handle;
+ vref(vp);
+ break;
+ case OBJT_SWAP:
+ kve->kve_type = KVME_TYPE_SWAP;
+ break;
+ case OBJT_DEVICE:
+ kve->kve_type = KVME_TYPE_DEVICE;
+ break;
+ case OBJT_PHYS:
+ kve->kve_type = KVME_TYPE_PHYS;
+ break;
+ case OBJT_DEAD:
+ kve->kve_type = KVME_TYPE_DEAD;
+ break;
+ case OBJT_SG:
+ kve->kve_type = KVME_TYPE_SG;
+ break;
+ default:
+ kve->kve_type = KVME_TYPE_UNKNOWN;
+ break;
+ }
+ if (lobj != obj)
+ VM_OBJECT_UNLOCK(lobj);
+
+ kve->kve_ref_count = obj->ref_count;
+ kve->kve_shadow_count = obj->shadow_count;
+ VM_OBJECT_UNLOCK(obj);
+ if (vp != NULL) {
+ vn_fullpath(curthread, vp, &fullpath,
+ &freepath);
+ cred = curthread->td_ucred;
+ vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+ vn_lock(vp, LK_SHARED | LK_RETRY);
+ if (VOP_GETATTR(vp, &va, cred) == 0) {
+ kve->kve_fileid = va.va_fileid;
+ kve->kve_fsid = va.va_fsid;
+ }
+ vput(vp);
+ VFS_UNLOCK_GIANT(vfslocked);
+ }
+ } else {
+ kve->kve_type = KVME_TYPE_NONE;
+ kve->kve_ref_count = 0;
+ kve->kve_shadow_count = 0;
+ }
+
+ strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
+ if (freepath != NULL)
+ free(freepath, M_TEMP);
+
+ error = SYSCTL_OUT(req, kve, sizeof(*kve));
+ vm_map_lock_read(map);
+ if (error)
+ break;
+ if (last_timestamp != map->timestamp) {
+ vm_map_lookup_entry(map, addr - 1, &tmp_entry);
+ entry = tmp_entry;
+ }
+ }
+ vm_map_unlock_read(map);
+ vmspace_free(vm);
+ PRELE(p);
+ free(kve, M_TEMP);
+ return (error);
+}
+#endif /* COMPAT_FREEBSD7 */
+
+#ifdef KINFO_VMENTRY_SIZE
+CTASSERT(sizeof(struct kinfo_vmentry) == KINFO_VMENTRY_SIZE);
+#endif
+
+static int
+sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
+{
+ vm_map_entry_t entry, tmp_entry;
+ unsigned int last_timestamp;
+ char *fullpath, *freepath;
+ struct kinfo_vmentry *kve;
+ struct vattr va;
+ struct ucred *cred;
+ int error, *name;
+ struct vnode *vp;
+ struct proc *p;
+ struct vmspace *vm;
+ vm_map_t map;
+
+ name = (int *)arg1;
+ if ((p = pfind((pid_t)name[0])) == NULL)
+ return (ESRCH);
+ if (p->p_flag & P_WEXIT) {
+ PROC_UNLOCK(p);
+ return (ESRCH);
+ }
+ if ((error = p_candebug(curthread, p))) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ _PHOLD(p);
+ PROC_UNLOCK(p);
+ vm = vmspace_acquire_ref(p);
+ if (vm == NULL) {
+ PRELE(p);
+ return (ESRCH);
+ }
+ kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
+
+ map = &vm->vm_map; /* XXXRW: More locking required? */
+ vm_map_lock_read(map);
+ for (entry = map->header.next; entry != &map->header;
+ entry = entry->next) {
+ vm_object_t obj, tobj, lobj;
+ vm_offset_t addr;
+ int vfslocked;
+
+ if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
+ continue;
+
+ bzero(kve, sizeof(*kve));
+
+ kve->kve_private_resident = 0;
+ obj = entry->object.vm_object;
+ if (obj != NULL) {
+ VM_OBJECT_LOCK(obj);
+ if (obj->shadow_count == 1)
+ kve->kve_private_resident =
+ obj->resident_page_count;
+ }
+ kve->kve_resident = 0;
+ addr = entry->start;
+ while (addr < entry->end) {
+ if (pmap_extract(map->pmap, addr))
+ kve->kve_resident++;
+ addr += PAGE_SIZE;
+ }
+
+ for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
+ if (tobj != obj)
+ VM_OBJECT_LOCK(tobj);
+ if (lobj != obj)
+ VM_OBJECT_UNLOCK(lobj);
+ lobj = tobj;
+ }
+
+ kve->kve_start = entry->start;
+ kve->kve_end = entry->end;
+ kve->kve_offset = entry->offset;
+
+ if (entry->protection & VM_PROT_READ)
+ kve->kve_protection |= KVME_PROT_READ;
+ if (entry->protection & VM_PROT_WRITE)
+ kve->kve_protection |= KVME_PROT_WRITE;
+ if (entry->protection & VM_PROT_EXECUTE)
+ kve->kve_protection |= KVME_PROT_EXEC;
+
+ if (entry->eflags & MAP_ENTRY_COW)
+ kve->kve_flags |= KVME_FLAG_COW;
+ if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
+ kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
+ if (entry->eflags & MAP_ENTRY_NOCOREDUMP)
+ kve->kve_flags |= KVME_FLAG_NOCOREDUMP;
+
+ last_timestamp = map->timestamp;
+ vm_map_unlock_read(map);
+
+ kve->kve_fileid = 0;
+ kve->kve_fsid = 0;
+ freepath = NULL;
+ fullpath = "";
+ if (lobj) {
+ vp = NULL;
+ switch (lobj->type) {
+ case OBJT_DEFAULT:
+ kve->kve_type = KVME_TYPE_DEFAULT;
+ break;
+ case OBJT_VNODE:
+ kve->kve_type = KVME_TYPE_VNODE;
+ vp = lobj->handle;
+ vref(vp);
+ break;
+ case OBJT_SWAP:
+ kve->kve_type = KVME_TYPE_SWAP;
+ break;
+ case OBJT_DEVICE:
+ kve->kve_type = KVME_TYPE_DEVICE;
+ break;
+ case OBJT_PHYS:
+ kve->kve_type = KVME_TYPE_PHYS;
+ break;
+ case OBJT_DEAD:
+ kve->kve_type = KVME_TYPE_DEAD;
+ break;
+ case OBJT_SG:
+ kve->kve_type = KVME_TYPE_SG;
+ break;
+ default:
+ kve->kve_type = KVME_TYPE_UNKNOWN;
+ break;
+ }
+ if (lobj != obj)
+ VM_OBJECT_UNLOCK(lobj);
+
+ kve->kve_ref_count = obj->ref_count;
+ kve->kve_shadow_count = obj->shadow_count;
+ VM_OBJECT_UNLOCK(obj);
+ if (vp != NULL) {
+ vn_fullpath(curthread, vp, &fullpath,
+ &freepath);
+ cred = curthread->td_ucred;
+ vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+ vn_lock(vp, LK_SHARED | LK_RETRY);
+ if (VOP_GETATTR(vp, &va, cred) == 0) {
+ kve->kve_fileid = va.va_fileid;
+ kve->kve_fsid = va.va_fsid;
+ }
+ vput(vp);
+ VFS_UNLOCK_GIANT(vfslocked);
+ }
+ } else {
+ kve->kve_type = KVME_TYPE_NONE;
+ kve->kve_ref_count = 0;
+ kve->kve_shadow_count = 0;
+ }
+
+ strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
+ if (freepath != NULL)
+ free(freepath, M_TEMP);
+
+ /* Pack record size down */
+ kve->kve_structsize = offsetof(struct kinfo_vmentry, kve_path) +
+ strlen(kve->kve_path) + 1;
+ kve->kve_structsize = roundup(kve->kve_structsize,
+ sizeof(uint64_t));
+ error = SYSCTL_OUT(req, kve, kve->kve_structsize);
+ vm_map_lock_read(map);
+ if (error)
+ break;
+ if (last_timestamp != map->timestamp) {
+ vm_map_lookup_entry(map, addr - 1, &tmp_entry);
+ entry = tmp_entry;
+ }
+ }
+ vm_map_unlock_read(map);
+ vmspace_free(vm);
+ PRELE(p);
+ free(kve, M_TEMP);
+ return (error);
+}
+
+#if defined(STACK) || defined(DDB)
+static int
+sysctl_kern_proc_kstack(SYSCTL_HANDLER_ARGS)
+{
+ struct kinfo_kstack *kkstp;
+ int error, i, *name, numthreads;
+ lwpid_t *lwpidarray;
+ struct thread *td;
+ struct stack *st;
+ struct sbuf sb;
+ struct proc *p;
+
+ name = (int *)arg1;
+ if ((p = pfind((pid_t)name[0])) == NULL)
+ return (ESRCH);
+ /* XXXRW: Not clear ESRCH is the right error during proc execve(). */
+ if (p->p_flag & P_WEXIT || p->p_flag & P_INEXEC) {
+ PROC_UNLOCK(p);
+ return (ESRCH);
+ }
+ if ((error = p_candebug(curthread, p))) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ _PHOLD(p);
+ PROC_UNLOCK(p);
+
+ kkstp = malloc(sizeof(*kkstp), M_TEMP, M_WAITOK);
+ st = stack_create();
+
+ lwpidarray = NULL;
+ numthreads = 0;
+ PROC_LOCK(p);
+repeat:
+ if (numthreads < p->p_numthreads) {
+ if (lwpidarray != NULL) {
+ free(lwpidarray, M_TEMP);
+ lwpidarray = NULL;
+ }
+ numthreads = p->p_numthreads;
+ PROC_UNLOCK(p);
+ lwpidarray = malloc(sizeof(*lwpidarray) * numthreads, M_TEMP,
+ M_WAITOK | M_ZERO);
+ PROC_LOCK(p);
+ goto repeat;
+ }
+ i = 0;
+
+ /*
+ * XXXRW: During the below loop, execve(2) and countless other sorts
+ * of changes could have taken place. Should we check to see if the
+ * vmspace has been replaced, or the like, in order to prevent
+ * giving a snapshot that spans, say, execve(2), with some threads
+ * before and some after? Among other things, the credentials could
+ * have changed, in which case the right to extract debug info might
+ * no longer be assured.
+ */
+ FOREACH_THREAD_IN_PROC(p, td) {
+ KASSERT(i < numthreads,
+ ("sysctl_kern_proc_kstack: numthreads"));
+ lwpidarray[i] = td->td_tid;
+ i++;
+ }
+ numthreads = i;
+ for (i = 0; i < numthreads; i++) {
+ td = thread_find(p, lwpidarray[i]);
+ if (td == NULL) {
+ continue;
+ }
+ bzero(kkstp, sizeof(*kkstp));
+ (void)sbuf_new(&sb, kkstp->kkst_trace,
+ sizeof(kkstp->kkst_trace), SBUF_FIXEDLEN);
+ thread_lock(td);
+ kkstp->kkst_tid = td->td_tid;
+ if (TD_IS_SWAPPED(td))
+ kkstp->kkst_state = KKST_STATE_SWAPPED;
+ else if (TD_IS_RUNNING(td))
+ kkstp->kkst_state = KKST_STATE_RUNNING;
+ else {
+ kkstp->kkst_state = KKST_STATE_STACKOK;
+ stack_save_td(st, td);
+ }
+ thread_unlock(td);
+ PROC_UNLOCK(p);
+ stack_sbuf_print(&sb, st);
+ sbuf_finish(&sb);
+ sbuf_delete(&sb);
+ error = SYSCTL_OUT(req, kkstp, sizeof(*kkstp));
+ PROC_LOCK(p);
+ if (error)
+ break;
+ }
+ _PRELE(p);
+ PROC_UNLOCK(p);
+ if (lwpidarray != NULL)
+ free(lwpidarray, M_TEMP);
+ stack_destroy(st);
+ free(kkstp, M_TEMP);
+ return (error);
+}
+#endif
+
+/*
+ * This sysctl allows a process to retrieve the full list of groups from
+ * itself or another process.
+ */
+static int
+sysctl_kern_proc_groups(SYSCTL_HANDLER_ARGS)
+{
+ pid_t *pidp = (pid_t *)arg1;
+ unsigned int arglen = arg2;
+ struct proc *p;
+ struct ucred *cred;
+ int error;
+
+ if (arglen != 1)
+ return (EINVAL);
+ if (*pidp == -1) { /* -1 means this process */
+ p = req->td->td_proc;
+ } else {
+ p = pfind(*pidp);
+ if (p == NULL)
+ return (ESRCH);
+ if ((error = p_cansee(curthread, p)) != 0) {
+ PROC_UNLOCK(p);
+ return (error);
+ }
+ }
+
+ cred = crhold(p->p_ucred);
+ if (*pidp != -1)
+ PROC_UNLOCK(p);
+
+ error = SYSCTL_OUT(req, cred->cr_groups,
+ cred->cr_ngroups * sizeof(gid_t));
+ crfree(cred);
+ return (error);
+}
+
+SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD, 0, "Process table");
+
+SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLFLAG_RD|CTLTYPE_STRUCT|
+ CTLFLAG_MPSAFE, 0, 0, sysctl_kern_proc, "S,proc",
+ "Return entire process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_GID, gid, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_PGRP, pgrp, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_RGID, rgid, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_SESSION, sid, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_TTY, tty, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_UID, uid, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_RUID, ruid, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_PID, pid, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_PROC, proc, CTLFLAG_RD | CTLFLAG_MPSAFE,
+ sysctl_kern_proc, "Return process table, no threads");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_ARGS, args,
+ CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_MPSAFE,
+ sysctl_kern_proc_args, "Process argument list");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_PATHNAME, pathname, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc_pathname, "Process executable path");
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_SV_NAME, sv_name, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc_sv_name,
+ "Process syscall vector name (ABI type)");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_GID | KERN_PROC_INC_THREAD), gid_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_PGRP | KERN_PROC_INC_THREAD), pgrp_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_RGID | KERN_PROC_INC_THREAD), rgid_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_SESSION | KERN_PROC_INC_THREAD),
+ sid_td, CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_TTY | KERN_PROC_INC_THREAD), tty_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_UID | KERN_PROC_INC_THREAD), uid_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_RUID | KERN_PROC_INC_THREAD), ruid_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_PID | KERN_PROC_INC_THREAD), pid_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc, "Process table");
+
+static SYSCTL_NODE(_kern_proc, (KERN_PROC_PROC | KERN_PROC_INC_THREAD), proc_td,
+ CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_kern_proc,
+ "Return process table, no threads");
+
+#ifdef COMPAT_FREEBSD7
+static SYSCTL_NODE(_kern_proc, KERN_PROC_OVMMAP, ovmmap, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc_ovmmap, "Old Process vm map entries");
+#endif
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_VMMAP, vmmap, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc_vmmap, "Process vm map entries");
+
+#if defined(STACK) || defined(DDB)
+static SYSCTL_NODE(_kern_proc, KERN_PROC_KSTACK, kstack, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc_kstack, "Process kernel stacks");
+#endif
+
+static SYSCTL_NODE(_kern_proc, KERN_PROC_GROUPS, groups, CTLFLAG_RD |
+ CTLFLAG_MPSAFE, sysctl_kern_proc_groups, "Process groups");
+#endif /* __rtems__ */
More information about the vc
mailing list