X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32..b0d623f7f2ae71ed96e60569f61f9a9a27016e80:/bsd/kern/kern_exit.c?ds=sidebyside diff --git a/bsd/kern/kern_exit.c b/bsd/kern/kern_exit.c index 27f98defb..f7d180479 100644 --- a/bsd/kern/kern_exit.c +++ b/bsd/kern/kern_exit.c @@ -98,13 +98,14 @@ #include #include #include +#include #include /* fdfree */ #if SYSV_SHM #include /* shmexit */ #endif #include /* acct_process */ -#include +#include #include #include @@ -133,7 +134,6 @@ extern void dtrace_lazy_dofs_destroy(proc_t); #include #include #include -#include /* init_process */ #include @@ -141,7 +141,8 @@ extern char init_task_failure_data[]; void proc_prepareexit(proc_t p, int rv); void vfork_exit(proc_t p, int rv); void vproc_exit(proc_t p); -__private_extern__ void munge_rusage(struct rusage *a_rusage_p, struct user_rusage *a_user_rusage_p); +__private_extern__ void munge_user64_rusage(struct rusage *a_rusage_p, struct user64_rusage *a_user_rusage_p); +__private_extern__ void munge_user32_rusage(struct rusage *a_rusage_p, struct user32_rusage *a_user_rusage_p); static int reap_child_locked(proc_t parent, proc_t child, int deadparent, int locked, int droplock); /* @@ -155,7 +156,6 @@ int *get_bsduthreadrval(thread_t); kern_return_t sys_perf_notify(thread_t thread, int pid); kern_return_t abnormal_exit_notify(mach_exception_data_type_t code, mach_exception_data_type_t subcode); -int in_shutdown(void); void workqueue_exit(struct proc *); void delay(int); @@ -164,7 +164,7 @@ void delay(int); * XXX Should share code with bsd/dev/ppc/unix_signal.c */ static void -siginfo_64to32(user_siginfo_t *in, siginfo_t *out) +siginfo_user_to_user32(user_siginfo_t *in, user32_siginfo_t *out) { out->si_signo = in->si_signo; out->si_errno = in->si_errno; @@ -172,11 +172,25 @@ siginfo_64to32(user_siginfo_t *in, siginfo_t *out) out->si_pid = in->si_pid; out->si_uid = in->si_uid; out->si_status = in->si_status; - out->si_addr = CAST_DOWN(void *,in->si_addr); + out->si_addr = CAST_DOWN_EXPLICIT(user32_addr_t,in->si_addr); /* following cast works for sival_int because of padding */ - out->si_value.sival_ptr = CAST_DOWN(void *,in->si_value.sival_ptr); + out->si_value.sival_ptr = CAST_DOWN_EXPLICIT(user32_addr_t,in->si_value.sival_ptr); + out->si_band = in->si_band; /* range reduction */ +} + +static void +siginfo_user_to_user64(user_siginfo_t *in, user64_siginfo_t *out) +{ + out->si_signo = in->si_signo; + out->si_errno = in->si_errno; + out->si_code = in->si_code; + out->si_pid = in->si_pid; + out->si_uid = in->si_uid; + out->si_status = in->si_status; + out->si_addr = in->si_addr; + /* following cast works for sival_int because of padding */ + out->si_value.sival_ptr = in->si_value.sival_ptr; out->si_band = in->si_band; /* range reduction */ - out->__pad[0] = in->pad[0]; /* mcontext.ss.r1 */ } /* @@ -228,6 +242,13 @@ exit1(proc_t p, int rv, int *retval) * which is currently required by mac_audit_postselect(). */ + /* + * The BSM token contains two components: an exit status as passed + * to exit(), and a return value to indicate what sort of exit it + * was. The exit status is WEXITSTATUS(rv), but it's not clear + * what the return value is. + */ + AUDIT_ARG(exit, WEXITSTATUS(rv), 0); AUDIT_SYSCALL_EXIT(SYS_exit, p, ut, 0); /* Exit is always successfull */ DTRACE_PROC1(exit, int, CLD_EXITED); @@ -279,7 +300,7 @@ proc_prepareexit(proc_t p, int rv) ut = get_bsdthread_info(self); /* If a core should be generated, notify crash reporter */ - if (!in_shutdown() && hassigprop(WTERMSIG(rv), SA_CORE)) { + if (hassigprop(WTERMSIG(rv), SA_CORE)) { /* * Workaround for processes checking up on PT_DENY_ATTACH: * should be backed out post-Leopard (details in 5431025). @@ -342,11 +363,12 @@ proc_exit(proc_t p) proc_t q; proc_t pp; struct task *task = p->task; - boolean_t fstate; vnode_t tvp = NULLVP; struct pgrp * pg; struct session *sessp; struct uthread * uth; + pid_t pid; + int exitval; /* This can happen if thread_terminate of the single thread * process @@ -364,6 +386,10 @@ proc_exit(proc_t p) p->p_lflag |= P_LPEXIT; proc_unlock(p); + pid = p->p_pid; + exitval = p->p_xstat; + KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_PROC, BSD_PROC_EXIT) | DBG_FUNC_START, + pid, exitval, 0, 0, 0); #if CONFIG_DTRACE /* @@ -418,6 +444,17 @@ proc_exit(proc_t p) */ fdfree(p); + if (uth->uu_lowpri_window) { + /* + * task is marked as a low priority I/O type + * and the I/O we issued while in flushing files on close + * collided with normal I/O operations... + * no need to throttle this thread since its going away + * but we do need to update our bookeeping w/r to throttled threads + */ + throttle_lowpri_io(FALSE); + } + #if SYSV_SHM /* Close ref SYSV Shared memory*/ if (p->vm_shm) @@ -428,12 +465,13 @@ proc_exit(proc_t p) semexit(p); #endif +#if PSYNCH + pth_proc_hashdelete(p); +#endif /* PSYNCH */ + sessp = proc_session(p); if (SESS_LEADER(p, sessp)) { - /* Protected by funnel for tty accesses */ - fstate = thread_funnel_set(kernel_flock, TRUE); - if (sessp->s_ttyvp != NULLVP) { struct vnode *ttyvp; int ttyvid; @@ -447,26 +485,29 @@ proc_exit(proc_t p) * drain controlling terminal * and revoke access to controlling terminal. */ - tp = sessp->s_ttyp; + tp = SESSION_TP(sessp); if ((tp != TTY_NULL) && (tp->t_session == sessp)) { tty_pgsignal(tp, SIGHUP, 1); - (void) ttywait(tp); - /* - * The tty could have been revoked - * if we blocked. - */ session_lock(sessp); + /* reget potentially tp due to revocation */ + tp = SESSION_TP(sessp); ttyvp = sessp->s_ttyvp; ttyvid = sessp->s_ttyvid; - sessp->s_ttyvp = NULL; + sessp->s_ttyvp = NULLVP; sessp->s_ttyvid = 0; - sessp->s_ttyp = NULL; + sessp->s_ttyp = TTY_NULL; sessp->s_ttypgrpid = NO_PID; session_unlock(sessp); if ((ttyvp != NULLVP) && (vnode_getwithvid(ttyvp, ttyvid) == 0)) { + + if (tp != TTY_NULL) { + tty_lock(tp); + (void) ttywait(tp); + tty_unlock(tp); + } context.vc_thread = proc_thread(p); /* XXX */ context.vc_ucred = kauth_cred_proc_ref(p); VNOP_REVOKE(ttyvp, REVOKEALL, &context); @@ -475,10 +516,12 @@ proc_exit(proc_t p) } } else { session_lock(sessp); + /* reget potentially tp due to revocation */ + tp = SESSION_TP(sessp); ttyvp = sessp->s_ttyvp; - sessp->s_ttyvp = NULL; + sessp->s_ttyvp = NULLVP; sessp->s_ttyvid = 0; - sessp->s_ttyp = NULL; + sessp->s_ttyp = TTY_NULL; sessp->s_ttypgrpid = NO_PID; session_unlock(sessp); } @@ -491,7 +534,6 @@ proc_exit(proc_t p) */ } - (void) thread_funnel_set(kernel_flock, fstate); session_lock(sessp); sessp->s_leader = NULL; session_unlock(sessp); @@ -506,6 +548,14 @@ proc_exit(proc_t p) (void)acct_process(p); proc_list_lock(); + + if ((p->p_listflag & P_LIST_EXITCOUNT) == P_LIST_EXITCOUNT) { + p->p_listflag &= ~P_LIST_EXITCOUNT; + proc_shutdown_exitcount--; + if (proc_shutdown_exitcount == 0) + wakeup(&proc_shutdown_exitcount); + } + /* wait till parentrefs are dropped and grant no more */ proc_childdrainstart(p); while ((q = p->p_children.lh_first) != NULL) { @@ -579,50 +629,7 @@ proc_exit(proc_t p) if (p->p_ru != NULL) { *p->p_ru = p->p_stats->p_ru; - timerclear(&p->p_ru->ru_utime); - timerclear(&p->p_ru->ru_stime); - - if (task) { - task_basic_info_32_data_t tinfo; - task_thread_times_info_data_t ttimesinfo; - task_events_info_data_t teventsinfo; - mach_msg_type_number_t task_info_stuff, task_ttimes_stuff; - mach_msg_type_number_t task_events_stuff; - struct timeval ut,st; - - task_info_stuff = TASK_BASIC_INFO_32_COUNT; - task_info(task, TASK_BASIC2_INFO_32, - (task_info_t)&tinfo, &task_info_stuff); - p->p_ru->ru_utime.tv_sec = tinfo.user_time.seconds; - p->p_ru->ru_utime.tv_usec = tinfo.user_time.microseconds; - p->p_ru->ru_stime.tv_sec = tinfo.system_time.seconds; - p->p_ru->ru_stime.tv_usec = tinfo.system_time.microseconds; - - p->p_ru->ru_maxrss = tinfo.resident_size; - - task_ttimes_stuff = TASK_THREAD_TIMES_INFO_COUNT; - task_info(task, TASK_THREAD_TIMES_INFO, - (task_info_t)&ttimesinfo, &task_ttimes_stuff); - - ut.tv_sec = ttimesinfo.user_time.seconds; - ut.tv_usec = ttimesinfo.user_time.microseconds; - st.tv_sec = ttimesinfo.system_time.seconds; - st.tv_usec = ttimesinfo.system_time.microseconds; - timeradd(&ut,&p->p_ru->ru_utime,&p->p_ru->ru_utime); - timeradd(&st,&p->p_ru->ru_stime,&p->p_ru->ru_stime); - - task_events_stuff = TASK_EVENTS_INFO_COUNT; - task_info(task, TASK_EVENTS_INFO, - (task_info_t)&teventsinfo, &task_events_stuff); - - p->p_ru->ru_minflt = (teventsinfo.faults - - teventsinfo.pageins); - p->p_ru->ru_majflt = teventsinfo.pageins; - p->p_ru->ru_nivcsw = (teventsinfo.csw - - p->p_ru->ru_nvcsw); - if (p->p_ru->ru_nivcsw < 0) - p->p_ru->ru_nivcsw = 0; - } + calcru(p, &p->p_ru->ru_utime, &p->p_ru->ru_stime, NULL); ruadd(p->p_ru, &p->p_stats->p_cru); } @@ -737,6 +744,8 @@ proc_exit(proc_t p) * The write is to an int and is coherent. Also parent is * keyed off of list lock for reaping */ + KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_PROC, BSD_PROC_EXIT) | DBG_FUNC_END, + pid, exitval, 0, 0, 0); p->p_stat = SZOMB; /* * The current process can be reaped so, no one @@ -758,6 +767,8 @@ proc_exit(proc_t p) * keyed off of list lock for reaping */ proc_list_lock(); + KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_PROC, BSD_PROC_EXIT) | DBG_FUNC_END, + pid, exitval, 0, 0, 0); p->p_stat = SZOMB; /* check for sysctl zomb lookup */ while ((p->p_listflag & P_LIST_WAITING) == P_LIST_WAITING) { @@ -777,6 +788,15 @@ proc_exit(proc_t p) (void)reap_child_locked(pp, p, 1, 1, 1); /* list lock dropped by reap_child_locked */ } + if (uth->uu_lowpri_window) { + /* + * task is marked as a low priority I/O type and we've + * somehow picked up another throttle during exit processing... + * no need to throttle this thread since its going away + * but we do need to update our bookeeping w/r to throttled threads + */ + throttle_lowpri_io(FALSE); + } proc_rele(pp); @@ -802,15 +822,23 @@ proc_exit(proc_t p) static int reap_child_locked(proc_t parent, proc_t child, int deadparent, int locked, int droplock) { - proc_t trace_parent; /* Traced parent process, if tracing */ + proc_t trace_parent = PROC_NULL; /* Traced parent process, if tracing */ + if (locked == 1) + proc_list_unlock(); + /* * If we got the child via a ptrace 'attach', * we need to give it back to the old parent. + * + * Exception: someone who has been reparented to launchd before being + * ptraced can simply be reaped, refer to radar 5677288 + * p_oppid -> ptraced + * trace_parent == initproc -> away from launchd + * P_LIST_DEADPARENT -> came to launchd by reparenting */ - if (locked == 1) - proc_list_unlock(); - if (child->p_oppid && (trace_parent = proc_find(child->p_oppid))) { + if (child->p_oppid && (trace_parent = proc_find(child->p_oppid)) + && !((trace_parent == initproc) && (child->p_lflag & P_LIST_DEADPARENT))) { proc_lock(child); child->p_oppid = 0; proc_unlock(child); @@ -839,8 +867,13 @@ reap_child_locked(proc_t parent, proc_t child, int deadparent, int locked, int d proc_list_lock(); return (0); } - + + if (trace_parent != PROC_NULL) { + proc_rele(trace_parent); + } + proc_knote(child, NOTE_REAP); + proc_knote_drain(child); child->p_xstat = 0; if (child->p_ru) { @@ -863,6 +896,8 @@ reap_child_locked(proc_t parent, proc_t child, int deadparent, int locked, int d printf("Warning : lost p_ru for %s\n", child->p_comm); } + AUDIT_SESSION_PROCEXIT(child->p_ucred); + /* * Decrement the count of procs running with this uid. * p_ucred usage is safe here as it is an exited process. @@ -910,12 +945,22 @@ reap_child_locked(proc_t parent, proc_t child, int deadparent, int locked, int d proc_list_unlock(); +#ifdef CONFIG_EMBEDDED lck_mtx_destroy(&child->p_mlock, proc_lck_grp); lck_mtx_destroy(&child->p_fdmlock, proc_lck_grp); #if CONFIG_DTRACE lck_mtx_destroy(&child->p_dtrace_sprlock, proc_lck_grp); #endif lck_spin_destroy(&child->p_slock, proc_lck_grp); + +#else + lck_mtx_destroy(&child->p_mlock, proc_mlock_grp); + lck_mtx_destroy(&child->p_fdmlock, proc_fdmlock_grp); +#if CONFIG_DTRACE + lck_mtx_destroy(&child->p_dtrace_sprlock, proc_lck_grp); +#endif + lck_spin_destroy(&child->p_slock, proc_slock_grp); +#endif workqueue_destroy_lock(child); FREE_ZONE(child, sizeof *child, M_PROC); @@ -945,19 +990,22 @@ wait1continue(int result) } int -wait4(proc_t q, struct wait4_args *uap, register_t *retval) +wait4(proc_t q, struct wait4_args *uap, int32_t *retval) { __pthread_testcancel(1); return(wait4_nocancel(q, (struct wait4_nocancel_args *)uap, retval)); } int -wait4_nocancel(proc_t q, struct wait4_nocancel_args *uap, register_t *retval) +wait4_nocancel(proc_t q, struct wait4_nocancel_args *uap, int32_t *retval) { int nfound; + int sibling_count; proc_t p; int status, error; + AUDIT_ARG(pid, uap->pid); + if (uap->pid == 0) uap->pid = -q->p_pgrpid; @@ -965,7 +1013,11 @@ loop: proc_list_lock(); loop1: nfound = 0; + sibling_count = 0; + for (p = q->p_children.lh_first; p != 0; p = p->p_sibling.le_next) { + if ( p->p_sibling.le_next != 0 ) + sibling_count++; if (uap->pid != WAIT_ANY && p->p_pid != uap->pid && p->p_pgrpid != -(uap->pid)) @@ -1003,16 +1055,18 @@ loop1: error = ENOMEM; } else { if (IS_64BIT_PROCESS(q)) { - struct user_rusage my_rusage; - munge_rusage(p->p_ru, &my_rusage); + struct user64_rusage my_rusage; + munge_user64_rusage(p->p_ru, &my_rusage); error = copyout((caddr_t)&my_rusage, uap->rusage, sizeof (my_rusage)); } else { - error = copyout((caddr_t)p->p_ru, + struct user32_rusage my_rusage; + munge_user32_rusage(p->p_ru, &my_rusage); + error = copyout((caddr_t)&my_rusage, uap->rusage, - sizeof (struct rusage)); + sizeof (my_rusage)); } } /* information unavailable? */ @@ -1020,13 +1074,28 @@ loop1: goto out; } - /* Clean up */ - if (!reap_child_locked(q, p, 0, 0, 0)) { - proc_list_lock(); - p->p_listflag &= ~P_LIST_WAITING; - wakeup(&p->p_stat); - proc_list_unlock(); + /* Conformance change for 6577252. + * When SIGCHLD is blocked and wait() returns because the status + * of a child process is available and there are no other + * children processes, then any pending SIGCHLD signal is cleared. + */ + if ( sibling_count == 0 ) { + int mask = sigmask(SIGCHLD); + uthread_t uth = (struct uthread *)get_bsdthread_info(current_thread()); + + if ( (uth->uu_sigmask & mask) != 0 ) { + /* we are blocking SIGCHLD signals. clear any pending SIGCHLD. + * This locking looks funny but it is protecting access to the + * thread via p_uthlist. + */ + proc_lock(q); + uth->uu_siglist &= ~mask; /* clear pending signal */ + proc_unlock(q); + } } + + /* Clean up */ + (void)reap_child_locked(q, p, 0, 0, 0); return (0); } @@ -1063,7 +1132,7 @@ loop1: #endif /* Prevent other process for waiting for this event */ - OSBitAndAtomic(~((uint32_t)P_CONTINUED), (UInt32 *)&p->p_flag); + OSBitAndAtomic(~((uint32_t)P_CONTINUED), &p->p_flag); retval[0] = p->p_pid; if (uap->status) { status = W_STOPCODE(SIGCONT); @@ -1132,14 +1201,14 @@ waitidcontinue(int result) * !0 Error returning status to user space */ int -waitid(proc_t q, struct waitid_args *uap, register_t *retval) +waitid(proc_t q, struct waitid_args *uap, int32_t *retval) { __pthread_testcancel(1); return(waitid_nocancel(q, (struct waitid_nocancel_args *)uap, retval)); } int -waitid_nocancel(proc_t q, struct waitid_nocancel_args *uap, __unused register_t *retval) +waitid_nocancel(proc_t q, struct waitid_nocancel_args *uap, __unused int32_t *retval) { user_siginfo_t collect64; /* siginfo data to return to caller */ @@ -1227,15 +1296,21 @@ loop1: collect64.si_band = 0; if (IS_64BIT_PROCESS(p)) { - error = copyout((caddr_t)&collect64, + user64_siginfo_t sinfo64; + + siginfo_user_to_user64(&collect64, &sinfo64); + + error = copyout((caddr_t)&sinfo64, uap->infop, - sizeof(collect64)); + sizeof(sinfo64)); } else { - siginfo_t collect; - siginfo_64to32(&collect64,&collect); - error = copyout((caddr_t)&collect, - uap->infop, - sizeof(collect)); + user32_siginfo_t sinfo32; + + siginfo_user_to_user32(&collect64, &sinfo32); + + error = copyout((caddr_t)&sinfo32, + uap->infop, + sizeof(sinfo32)); } /* information unavailable? */ if (error) @@ -1244,12 +1319,7 @@ loop1: /* Prevent other process for waiting for this event? */ if (!(uap->options & WNOWAIT)) { /* Clean up */ - if (!reap_child_locked(q, p, 0, 0, 0)) { - proc_list_lock(); - p->p_listflag &= ~P_LIST_WAITING; - wakeup(&p->p_stat); - proc_list_unlock(); - } + (void)reap_child_locked(q, p, 0, 0, 0); } else { proc_list_lock(); p->p_listflag &= ~P_LIST_WAITING; @@ -1289,15 +1359,21 @@ loop1: collect64.si_band = 0; if (IS_64BIT_PROCESS(p)) { - error = copyout((caddr_t)&collect64, - uap->infop, - sizeof(collect64)); + user64_siginfo_t sinfo64; + + siginfo_user_to_user64(&collect64, &sinfo64); + + error = copyout((caddr_t)&sinfo64, + uap->infop, + sizeof(sinfo64)); } else { - siginfo_t collect; - siginfo_64to32(&collect64,&collect); - error = copyout((caddr_t)&collect, - uap->infop, - sizeof(collect)); + user32_siginfo_t sinfo32; + + siginfo_user_to_user32(&collect64, &sinfo32); + + error = copyout((caddr_t)&sinfo32, + uap->infop, + sizeof(sinfo32)); } /* information unavailable? */ if (error) @@ -1342,15 +1418,21 @@ loop1: proc_unlock(p); if (IS_64BIT_PROCESS(p)) { - error = copyout((caddr_t)&collect64, - uap->infop, - sizeof(collect64)); + user64_siginfo_t sinfo64; + + siginfo_user_to_user64(&collect64, &sinfo64); + + error = copyout((caddr_t)&sinfo64, + uap->infop, + sizeof(sinfo64)); } else { - siginfo_t collect; - siginfo_64to32(&collect64,&collect); - error = copyout((caddr_t)&collect, - uap->infop, - sizeof(collect)); + user32_siginfo_t sinfo32; + + siginfo_user_to_user32(&collect64, &sinfo32); + + error = copyout((caddr_t)&sinfo32, + uap->infop, + sizeof(sinfo32)); } /* information unavailable? */ if (error) @@ -1358,7 +1440,7 @@ loop1: /* Prevent other process for waiting for this event? */ if (!(uap->options & WNOWAIT)) { - OSBitAndAtomic(~((uint32_t)P_CONTINUED), (UInt32 *)&p->p_flag); + OSBitAndAtomic(~((uint32_t)P_CONTINUED), &p->p_flag); } error = 0; @@ -1412,7 +1494,7 @@ proc_reparentlocked(proc_t child, proc_t parent, int cansignal, int locked) oldparent = child->p_pptr; #if __PROC_INTERNAL_DEBUG if (oldparent == PROC_NULL) - panic("proc_reparent: process %x does not have a parent\n", (unsigned int)child); + panic("proc_reparent: process %p does not have a parent\n", child); #endif LIST_REMOVE(child, p_sibling); @@ -1438,44 +1520,6 @@ proc_reparentlocked(proc_t child, proc_t parent, int cansignal, int locked) proc_list_lock(); } -/* - * Make the current process an "init" process, meaning - * that it doesn't have a parent, and that it won't be - * gunned down by kill(-1, 0). - */ -kern_return_t -init_process(__unused struct init_process_args *args) -{ - proc_t p = current_proc(); - - AUDIT_MACH_SYSCALL_ENTER(AUE_INITPROCESS); - if (suser(kauth_cred_get(), &p->p_acflag)) { - AUDIT_MACH_SYSCALL_EXIT(KERN_NO_ACCESS); - return(KERN_NO_ACCESS); - } - - if (p->p_pid != 1 && p->p_pgrpid != p->p_pid) - enterpgrp(p, p->p_pid, 0); - OSBitOrAtomic(P_SYSTEM, (UInt32 *)&p->p_flag); - - /* - * Take us out of the sibling chain, and - * out of our parent's child chain. - */ - proc_list_lock(); - LIST_REMOVE(p, p_sibling); - p->p_sibling.le_prev = NULL; - p->p_sibling.le_next = NULL; - p->p_pptr = kernproc; - p->p_ppid = 0; - proc_list_unlock(); - - - AUDIT_MACH_SYSCALL_EXIT(KERN_SUCCESS); - return(KERN_SUCCESS); -} - - /* * Exit: deallocate address space and other resources, change proc state * to zombie, and unlink proc from allproc and parent's lists. Save exit @@ -1585,7 +1629,6 @@ vproc_exit(proc_t p) #endif struct pgrp * pg; struct session *sessp; - boolean_t fstate; /* XXX Zombie allocation may fail, in which case stats get lost */ MALLOC_ZONE(p->p_ru, struct rusage *, @@ -1603,9 +1646,6 @@ vproc_exit(proc_t p) sessp = proc_session(p); if (SESS_LEADER(p, sessp)) { - /* Protected by funnel for tty accesses */ - fstate = thread_funnel_set(kernel_flock, TRUE); - if (sessp->s_ttyvp != NULLVP) { struct vnode *ttyvp; int ttyvid; @@ -1618,22 +1658,26 @@ vproc_exit(proc_t p) * drain controlling terminal * and revoke access to controlling terminal. */ - tp = sessp->s_ttyp; + tp = SESSION_TP(sessp); if ((tp != TTY_NULL) && (tp->t_session == sessp)) { tty_pgsignal(tp, SIGHUP, 1); + tty_lock(tp); (void) ttywait(tp); + tty_unlock(tp); /* * The tty could have been revoked * if we blocked. */ session_lock(sessp); + /* reget in case of race */ + tp = SESSION_TP(sessp); ttyvp = sessp->s_ttyvp; ttyvid = sessp->s_ttyvid; sessp->s_ttyvp = NULL; sessp->s_ttyvid = 0; - sessp->s_ttyp = NULL; + sessp->s_ttyp = TTY_NULL; sessp->s_ttypgrpid = NO_PID; session_unlock(sessp); @@ -1649,7 +1693,7 @@ vproc_exit(proc_t p) ttyvp = sessp->s_ttyvp; sessp->s_ttyvp = NULL; sessp->s_ttyvid = 0; - sessp->s_ttyp = NULL; + sessp->s_ttyp = TTY_NULL; sessp->s_ttypgrpid = NO_PID; session_unlock(sessp); } @@ -1661,7 +1705,6 @@ vproc_exit(proc_t p) * (for logging and informational purposes) */ } - (void) thread_funnel_set(kernel_flock, fstate); session_lock(sessp); sessp->s_leader = NULL; @@ -1876,11 +1919,11 @@ vproc_exit(proc_t p) /* * munge_rusage * LP64 support - long is 64 bits if we are dealing with a 64 bit user - * process. We munge the kernel (32 bit) version of rusage into the + * process. We munge the kernel version of rusage into the * 64 bit version. */ __private_extern__ void -munge_rusage(struct rusage *a_rusage_p, struct user_rusage *a_user_rusage_p) +munge_user64_rusage(struct rusage *a_rusage_p, struct user64_rusage *a_user_rusage_p) { /* timeval changes size, so utime and stime need special handling */ a_user_rusage_p->ru_utime.tv_sec = a_rusage_p->ru_utime.tv_sec; @@ -1906,3 +1949,32 @@ munge_rusage(struct rusage *a_rusage_p, struct user_rusage *a_user_rusage_p) a_user_rusage_p->ru_nvcsw = a_rusage_p->ru_nvcsw; a_user_rusage_p->ru_nivcsw = a_rusage_p->ru_nivcsw; } + +/* For a 64-bit kernel and 32-bit userspace, munging may be needed */ +__private_extern__ void +munge_user32_rusage(struct rusage *a_rusage_p, struct user32_rusage *a_user_rusage_p) +{ + /* timeval changes size, so utime and stime need special handling */ + a_user_rusage_p->ru_utime.tv_sec = a_rusage_p->ru_utime.tv_sec; + a_user_rusage_p->ru_utime.tv_usec = a_rusage_p->ru_utime.tv_usec; + a_user_rusage_p->ru_stime.tv_sec = a_rusage_p->ru_stime.tv_sec; + a_user_rusage_p->ru_stime.tv_usec = a_rusage_p->ru_stime.tv_usec; + /* + * everything else can be a direct assign. We currently ignore + * the loss of precision + */ + a_user_rusage_p->ru_maxrss = a_rusage_p->ru_maxrss; + a_user_rusage_p->ru_ixrss = a_rusage_p->ru_ixrss; + a_user_rusage_p->ru_idrss = a_rusage_p->ru_idrss; + a_user_rusage_p->ru_isrss = a_rusage_p->ru_isrss; + a_user_rusage_p->ru_minflt = a_rusage_p->ru_minflt; + a_user_rusage_p->ru_majflt = a_rusage_p->ru_majflt; + a_user_rusage_p->ru_nswap = a_rusage_p->ru_nswap; + a_user_rusage_p->ru_inblock = a_rusage_p->ru_inblock; + a_user_rusage_p->ru_oublock = a_rusage_p->ru_oublock; + a_user_rusage_p->ru_msgsnd = a_rusage_p->ru_msgsnd; + a_user_rusage_p->ru_msgrcv = a_rusage_p->ru_msgrcv; + a_user_rusage_p->ru_nsignals = a_rusage_p->ru_nsignals; + a_user_rusage_p->ru_nvcsw = a_rusage_p->ru_nvcsw; + a_user_rusage_p->ru_nivcsw = a_rusage_p->ru_nivcsw; +}