Lines Matching full:task
113 * in /proc for a task before it execs a suid executable.
173 static int get_task_root(struct task_struct *task, struct path *root) in get_task_root() argument
177 task_lock(task); in get_task_root()
178 if (task->fs) { in get_task_root()
179 get_fs_root(task->fs, root); in get_task_root()
182 task_unlock(task); in get_task_root()
188 struct task_struct *task = get_proc_task(d_inode(dentry)); in proc_cwd_link() local
191 if (task) { in proc_cwd_link()
192 task_lock(task); in proc_cwd_link()
193 if (task->fs) { in proc_cwd_link()
194 get_fs_pwd(task->fs, path); in proc_cwd_link()
197 task_unlock(task); in proc_cwd_link()
198 put_task_struct(task); in proc_cwd_link()
205 struct task_struct *task = get_proc_task(d_inode(dentry)); in proc_root_link() local
208 if (task) { in proc_root_link()
209 result = get_task_root(task, path); in proc_root_link()
210 put_task_struct(task); in proc_root_link()
387 struct pid *pid, struct task_struct *task) in proc_pid_wchan() argument
392 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_pid_wchan()
395 wchan = get_wchan(task); in proc_pid_wchan()
407 static int lock_trace(struct task_struct *task) in lock_trace() argument
409 int err = down_read_killable(&task->signal->exec_update_lock); in lock_trace()
412 if (!ptrace_may_access(task, PTRACE_MODE_ATTACH_FSCREDS)) { in lock_trace()
413 up_read(&task->signal->exec_update_lock); in lock_trace()
419 static void unlock_trace(struct task_struct *task) in unlock_trace() argument
421 up_read(&task->signal->exec_update_lock); in unlock_trace()
429 struct pid *pid, struct task_struct *task) in proc_pid_stack() argument
435 * The ability to racily run the kernel stack unwinder on a running task in proc_pid_stack()
440 * some work to ensure that the remote task can not be scheduled; and in proc_pid_stack()
453 err = lock_trace(task); in proc_pid_stack()
457 nr_entries = stack_trace_save_tsk(task, entries, in proc_pid_stack()
464 unlock_trace(task); in proc_pid_stack()
477 struct pid *pid, struct task_struct *task) in proc_pid_schedstat() argument
483 (unsigned long long)task->se.sum_exec_runtime, in proc_pid_schedstat()
484 (unsigned long long)task->sched_info.run_delay, in proc_pid_schedstat()
485 task->sched_info.pcount); in proc_pid_schedstat()
496 struct task_struct *task = get_proc_task(inode); in lstats_show_proc() local
498 if (!task) in lstats_show_proc()
502 struct latency_record *lr = &task->latency_record[i]; in lstats_show_proc()
518 put_task_struct(task); in lstats_show_proc()
530 struct task_struct *task = get_proc_task(file_inode(file)); in lstats_write() local
532 if (!task) in lstats_write()
534 clear_tsk_latency_tracing(task); in lstats_write()
535 put_task_struct(task); in lstats_write()
551 struct pid *pid, struct task_struct *task) in proc_oom_score() argument
557 badness = oom_badness(task, totalpages); in proc_oom_score()
597 struct pid *pid, struct task_struct *task) in proc_pid_limits() argument
604 if (!lock_task_sighand(task, &flags)) in proc_pid_limits()
606 memcpy(rlim, task->signal->rlim, sizeof(struct rlimit) * RLIM_NLIMITS); in proc_pid_limits()
607 unlock_task_sighand(task, &flags); in proc_pid_limits()
641 struct pid *pid, struct task_struct *task) in proc_pid_syscall() argument
647 res = lock_trace(task); in proc_pid_syscall()
651 if (task_current_syscall(task, &info)) in proc_pid_syscall()
662 unlock_trace(task); in proc_pid_syscall()
675 struct task_struct *task; in proc_fd_access_allowed() local
677 /* Allow access to a task's file descriptors if it is us or we in proc_fd_access_allowed()
681 task = get_proc_task(inode); in proc_fd_access_allowed()
682 if (task) { in proc_fd_access_allowed()
683 allowed = ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in proc_fd_access_allowed()
684 put_task_struct(task); in proc_fd_access_allowed()
707 * May current process learn task's sched/cmdline info (for hide_pid_min=1)
711 struct task_struct *task, in has_pid_permissions() argument
720 return ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in has_pid_permissions()
726 return ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in has_pid_permissions()
733 struct task_struct *task; in proc_pid_permission() local
736 task = get_proc_task(inode); in proc_pid_permission()
737 if (!task) in proc_pid_permission()
739 has_perms = has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS); in proc_pid_permission()
740 put_task_struct(task); in proc_pid_permission()
769 struct task_struct *task; in proc_single_show() local
772 task = get_pid_task(pid, PIDTYPE_PID); in proc_single_show()
773 if (!task) in proc_single_show()
776 ret = PROC_I(inode)->op.proc_show(m, ns, pid, task); in proc_single_show()
778 put_task_struct(task); in proc_single_show()
797 struct task_struct *task = get_proc_task(inode); in proc_mem_open() local
800 if (task) { in proc_mem_open()
801 mm = mm_access(task, mode | PTRACE_MODE_FSCREDS); in proc_mem_open()
802 put_task_struct(task); in proc_mem_open()
1040 struct task_struct *task = get_proc_task(file_inode(file)); in oom_adj_read() local
1045 if (!task) in oom_adj_read()
1047 if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MAX) in oom_adj_read()
1050 oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) / in oom_adj_read()
1052 put_task_struct(task); in oom_adj_read()
1062 struct task_struct *task; in __set_oom_adj() local
1065 task = get_proc_task(file_inode(file)); in __set_oom_adj()
1066 if (!task) in __set_oom_adj()
1071 if (oom_adj < task->signal->oom_score_adj && in __set_oom_adj()
1081 current->comm, task_pid_nr(current), task_pid_nr(task), in __set_oom_adj()
1082 task_pid_nr(task)); in __set_oom_adj()
1084 if ((short)oom_adj < task->signal->oom_score_adj_min && in __set_oom_adj()
1096 if (!task->vfork_done) { in __set_oom_adj()
1097 struct task_struct *p = find_lock_task_mm(task); in __set_oom_adj()
1108 task->signal->oom_score_adj = oom_adj; in __set_oom_adj()
1110 task->signal->oom_score_adj_min = (short)oom_adj; in __set_oom_adj()
1111 trace_oom_score_adj_update(task); in __set_oom_adj()
1118 if (same_thread_group(task, p)) in __set_oom_adj()
1138 put_task_struct(task); in __set_oom_adj()
1199 struct task_struct *task = get_proc_task(file_inode(file)); in oom_score_adj_read() local
1204 if (!task) in oom_score_adj_read()
1206 oom_score_adj = task->signal->oom_score_adj; in oom_score_adj_read()
1207 put_task_struct(task); in oom_score_adj_read()
1253 struct task_struct *task = get_proc_task(inode); in proc_loginuid_read() local
1257 if (!task) in proc_loginuid_read()
1261 audit_get_loginuid(task))); in proc_loginuid_read()
1262 put_task_struct(task); in proc_loginuid_read()
1319 struct task_struct *task = get_proc_task(inode); in proc_sessionid_read() local
1323 if (!task) in proc_sessionid_read()
1326 audit_get_sessionid(task)); in proc_sessionid_read()
1327 put_task_struct(task); in proc_sessionid_read()
1341 struct task_struct *task = get_proc_task(file_inode(file)); in proc_fault_inject_read() local
1346 if (!task) in proc_fault_inject_read()
1348 make_it_fail = task->make_it_fail; in proc_fault_inject_read()
1349 put_task_struct(task); in proc_fault_inject_read()
1359 struct task_struct *task; in proc_fault_inject_write() local
1377 task = get_proc_task(file_inode(file)); in proc_fault_inject_write()
1378 if (!task) in proc_fault_inject_write()
1380 task->make_it_fail = make_it_fail; in proc_fault_inject_write()
1381 put_task_struct(task); in proc_fault_inject_write()
1395 struct task_struct *task; in proc_fail_nth_write() local
1403 task = get_proc_task(file_inode(file)); in proc_fail_nth_write()
1404 if (!task) in proc_fail_nth_write()
1406 task->fail_nth = n; in proc_fail_nth_write()
1407 put_task_struct(task); in proc_fail_nth_write()
1415 struct task_struct *task; in proc_fail_nth_read() local
1419 task = get_proc_task(file_inode(file)); in proc_fail_nth_read()
1420 if (!task) in proc_fail_nth_read()
1422 len = snprintf(numbuf, sizeof(numbuf), "%u\n", task->fail_nth); in proc_fail_nth_read()
1423 put_task_struct(task); in proc_fail_nth_read()
1436 * Print out various scheduling related per-task fields:
1721 struct task_struct *task; in proc_exe_link() local
1724 task = get_proc_task(d_inode(dentry)); in proc_exe_link()
1725 if (!task) in proc_exe_link()
1727 exe_file = get_task_exe_file(task); in proc_exe_link()
1728 put_task_struct(task); in proc_exe_link()
1814 void task_dump_owner(struct task_struct *task, umode_t mode, in task_dump_owner() argument
1818 * proc file for a task. in task_dump_owner()
1824 if (unlikely(task->flags & PF_KTHREAD)) { in task_dump_owner()
1832 cred = __task_cred(task); in task_dump_owner()
1847 task_lock(task); in task_dump_owner()
1848 mm = task->mm; in task_dump_owner()
1866 task_unlock(task); in task_dump_owner()
1886 struct task_struct *task, umode_t mode) in proc_pid_make_inode() argument
1906 * grab the reference to task. in proc_pid_make_inode()
1908 pid = get_task_pid(task, PIDTYPE_PID); in proc_pid_make_inode()
1920 task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid); in proc_pid_make_inode()
1921 security_task_to_inode(task, inode); in proc_pid_make_inode()
1936 struct task_struct *task; in pid_getattr() local
1943 task = pid_task(proc_pid(inode), PIDTYPE_PID); in pid_getattr()
1944 if (task) { in pid_getattr()
1945 if (!has_pid_permissions(fs_info, task, HIDEPID_INVISIBLE)) { in pid_getattr()
1953 task_dump_owner(task, inode->i_mode, &stat->uid, &stat->gid); in pid_getattr()
1964 void pid_update_inode(struct task_struct *task, struct inode *inode) in pid_update_inode() argument
1966 task_dump_owner(task, inode->i_mode, &inode->i_uid, &inode->i_gid); in pid_update_inode()
1969 security_task_to_inode(task, inode); in pid_update_inode()
1973 * Rewrite the inode's ownerships here because the owning task may have
1980 struct task_struct *task; in pid_revalidate() local
1986 task = get_proc_task(inode); in pid_revalidate()
1988 if (task) { in pid_revalidate()
1989 pid_update_inode(task, inode); in pid_revalidate()
1990 put_task_struct(task); in pid_revalidate()
2003 /* Is the task we represent dead? in pid_delete_dentry()
2032 instantiate_t instantiate, struct task_struct *task, const void *ptr) in proc_fill_cache() argument
2048 res = instantiate(child, task, ptr); in proc_fill_cache()
2113 struct task_struct *task; in map_files_d_revalidate() local
2121 task = get_proc_task(inode); in map_files_d_revalidate()
2122 if (!task) in map_files_d_revalidate()
2125 mm = mm_access(task, PTRACE_MODE_READ_FSCREDS); in map_files_d_revalidate()
2141 task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid); in map_files_d_revalidate()
2143 security_task_to_inode(task, inode); in map_files_d_revalidate()
2148 put_task_struct(task); in map_files_d_revalidate()
2163 struct task_struct *task; in map_files_get_link() local
2168 task = get_proc_task(d_inode(dentry)); in map_files_get_link()
2169 if (!task) in map_files_get_link()
2172 mm = get_task_mm(task); in map_files_get_link()
2173 put_task_struct(task); in map_files_get_link()
2233 struct task_struct *task, const void *ptr) in proc_map_files_instantiate() argument
2239 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFLNK | in proc_map_files_instantiate()
2260 struct task_struct *task; in proc_map_files_lookup() local
2265 task = get_proc_task(dir); in proc_map_files_lookup()
2266 if (!task) in proc_map_files_lookup()
2270 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_map_files_lookup()
2277 mm = get_task_mm(task); in proc_map_files_lookup()
2291 result = proc_map_files_instantiate(dentry, task, in proc_map_files_lookup()
2299 put_task_struct(task); in proc_map_files_lookup()
2314 struct task_struct *task; in proc_map_files_readdir() local
2324 task = get_proc_task(file_inode(file)); in proc_map_files_readdir()
2325 if (!task) in proc_map_files_readdir()
2329 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_map_files_readdir()
2336 mm = get_task_mm(task); in proc_map_files_readdir()
2388 task, in proc_map_files_readdir()
2395 put_task_struct(task); in proc_map_files_readdir()
2410 struct task_struct *task; member
2420 tp->task = get_pid_task(tp->pid, PIDTYPE_PID); in timers_start()
2421 if (!tp->task) in timers_start()
2424 tp->sighand = lock_task_sighand(tp->task, &tp->flags); in timers_start()
2428 return seq_list_start(&tp->task->signal->posix_timers, *pos); in timers_start()
2434 return seq_list_next(v, &tp->task->signal->posix_timers, pos); in timers_next()
2442 unlock_task_sighand(tp->task, &tp->flags); in timers_stop()
2446 if (tp->task) { in timers_stop()
2447 put_task_struct(tp->task); in timers_stop()
2448 tp->task = NULL; in timers_stop()
2601 struct task_struct *task, const void *ptr) in proc_pident_instantiate() argument
2607 inode = proc_pid_make_inode(dentry->d_sb, task, p->mode); in proc_pident_instantiate()
2619 pid_update_inode(task, inode); in proc_pident_instantiate()
2629 struct task_struct *task = get_proc_task(dir); in proc_pident_lookup() local
2632 if (!task) in proc_pident_lookup()
2643 res = proc_pident_instantiate(dentry, task, p); in proc_pident_lookup()
2647 put_task_struct(task); in proc_pident_lookup()
2655 struct task_struct *task = get_proc_task(file_inode(file)); in proc_pident_readdir() local
2658 if (!task) in proc_pident_readdir()
2669 proc_pident_instantiate, task, p)) in proc_pident_readdir()
2674 put_task_struct(task); in proc_pident_readdir()
2692 struct task_struct *task = get_proc_task(inode); in proc_pid_attr_read() local
2694 if (!task) in proc_pid_attr_read()
2697 length = security_getprocattr(task, PROC_I(inode)->op.lsm, in proc_pid_attr_read()
2700 put_task_struct(task); in proc_pid_attr_read()
2711 struct task_struct *task; in proc_pid_attr_write() local
2715 /* A task may only write when it was the opener. */ in proc_pid_attr_write()
2720 task = pid_task(proc_pid(inode), PIDTYPE_PID); in proc_pid_attr_write()
2721 if (!task) { in proc_pid_attr_write()
2725 /* A task may only write its own attributes. */ in proc_pid_attr_write()
2726 if (current != task) { in proc_pid_attr_write()
2867 struct task_struct *task = get_proc_task(file_inode(file)); in proc_coredump_filter_read() local
2873 if (!task) in proc_coredump_filter_read()
2877 mm = get_task_mm(task); in proc_coredump_filter_read()
2886 put_task_struct(task); in proc_coredump_filter_read()
2896 struct task_struct *task; in proc_coredump_filter_write() local
2908 task = get_proc_task(file_inode(file)); in proc_coredump_filter_write()
2909 if (!task) in proc_coredump_filter_write()
2912 mm = get_task_mm(task); in proc_coredump_filter_write()
2926 put_task_struct(task); in proc_coredump_filter_write()
2941 static int do_io_accounting(struct task_struct *task, struct seq_file *m, int whole) in do_io_accounting() argument
2943 struct task_io_accounting acct = task->ioac; in do_io_accounting()
2947 result = down_read_killable(&task->signal->exec_update_lock); in do_io_accounting()
2951 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) { in do_io_accounting()
2956 if (whole && lock_task_sighand(task, &flags)) { in do_io_accounting()
2957 struct task_struct *t = task; in do_io_accounting()
2959 task_io_accounting_add(&acct, &task->signal->ioac); in do_io_accounting()
2960 while_each_thread(task, t) in do_io_accounting()
2963 unlock_task_sighand(task, &flags); in do_io_accounting()
2983 up_read(&task->signal->exec_update_lock); in do_io_accounting()
2988 struct pid *pid, struct task_struct *task) in proc_tid_io_accounting() argument
2990 return do_io_accounting(task, m, 0); in proc_tid_io_accounting()
2994 struct pid *pid, struct task_struct *task) in proc_tgid_io_accounting() argument
2996 return do_io_accounting(task, m, 1); in proc_tgid_io_accounting()
3005 struct task_struct *task; in proc_id_map_open() local
3009 task = get_proc_task(inode); in proc_id_map_open()
3010 if (task) { in proc_id_map_open()
3012 ns = get_user_ns(task_cred_xxx(task, user_ns)); in proc_id_map_open()
3014 put_task_struct(task); in proc_id_map_open()
3083 struct task_struct *task; in proc_setgroups_open() local
3087 task = get_proc_task(inode); in proc_setgroups_open()
3088 if (task) { in proc_setgroups_open()
3090 ns = get_user_ns(task_cred_xxx(task, user_ns)); in proc_setgroups_open()
3092 put_task_struct(task); in proc_setgroups_open()
3133 struct pid *pid, struct task_struct *task) in proc_pid_personality() argument
3135 int err = lock_trace(task); in proc_pid_personality()
3137 seq_printf(m, "%08x\n", task->personality); in proc_pid_personality()
3138 unlock_trace(task); in proc_pid_personality()
3145 struct pid *pid, struct task_struct *task) in proc_pid_patch_state() argument
3147 seq_printf(m, "%d\n", task->patch_state); in proc_pid_patch_state()
3154 struct pid *pid, struct task_struct *task) in proc_stack_depth() argument
3157 (task->prev_lowest_stack & (THREAD_SIZE - 1)); in proc_stack_depth()
3159 (task->lowest_stack & (THREAD_SIZE - 1)); in proc_stack_depth()
3174 DIR("task", S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
3327 * It is safe and reasonable to cache /proc entries for a task until
3328 * that task exits. After that they just clog up the dcache with
3344 struct task_struct *task, const void *ptr) in proc_pid_instantiate() argument
3348 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFDIR | S_IRUGO | S_IXUGO); in proc_pid_instantiate()
3357 pid_update_inode(task, inode); in proc_pid_instantiate()
3365 struct task_struct *task; in proc_pid_lookup() local
3378 task = find_task_by_pid_ns(tgid, ns); in proc_pid_lookup()
3379 if (task) in proc_pid_lookup()
3380 get_task_struct(task); in proc_pid_lookup()
3382 if (!task) in proc_pid_lookup()
3387 if (!has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS)) in proc_pid_lookup()
3391 result = proc_pid_instantiate(dentry, task, NULL); in proc_pid_lookup()
3393 put_task_struct(task); in proc_pid_lookup()
3399 * Find the first task with tgid >= tgid
3404 struct task_struct *task; member
3410 if (iter.task) in next_tgid()
3411 put_task_struct(iter.task); in next_tgid()
3414 iter.task = NULL; in next_tgid()
3418 iter.task = pid_task(pid, PIDTYPE_TGID); in next_tgid()
3419 if (!iter.task) { in next_tgid()
3423 get_task_struct(iter.task); in next_tgid()
3455 iter.task = NULL; in proc_pid_readdir()
3457 iter.task; in proc_pid_readdir()
3463 if (!has_pid_permissions(fs_info, iter.task, HIDEPID_INVISIBLE)) in proc_pid_readdir()
3469 proc_pid_instantiate, iter.task, NULL)) { in proc_pid_readdir()
3470 put_task_struct(iter.task); in proc_pid_readdir()
3480 * used for the node /proc/<pid>/task/<tid>/comm.
3481 * It bypasses generic permission checks in the case where a task of the same
3482 * task group attempts to access the node.
3493 struct task_struct *task; in proc_tid_comm_permission() local
3495 task = get_proc_task(inode); in proc_tid_comm_permission()
3496 if (!task) in proc_tid_comm_permission()
3498 is_same_tgroup = same_thread_group(current, task); in proc_tid_comm_permission()
3499 put_task_struct(task); in proc_tid_comm_permission()
3502 /* This file (/proc/<pid>/task/<tid>/comm) can always be in proc_tid_comm_permission()
3643 struct task_struct *task, const void *ptr) in proc_task_instantiate() argument
3646 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFDIR | S_IRUGO | S_IXUGO); in proc_task_instantiate()
3655 pid_update_inode(task, inode); in proc_task_instantiate()
3663 struct task_struct *task; in proc_task_lookup() local
3680 task = find_task_by_pid_ns(tid, ns); in proc_task_lookup()
3681 if (task) in proc_task_lookup()
3682 get_task_struct(task); in proc_task_lookup()
3684 if (!task) in proc_task_lookup()
3686 if (!same_thread_group(leader, task)) in proc_task_lookup()
3689 result = proc_task_instantiate(dentry, task, NULL); in proc_task_lookup()
3691 put_task_struct(task); in proc_task_lookup()
3713 struct task_struct *pos, *task; in first_tid() local
3720 task = pid_task(pid, PIDTYPE_PID); in first_tid()
3721 if (!task) in first_tid()
3727 if (pos && same_thread_group(pos, task)) in first_tid()
3732 if (nr >= get_nr_threads(task)) in first_tid()
3738 pos = task = task->group_leader; in first_tid()
3742 } while_each_thread(task, pos); in first_tid()
3775 /* for the /proc/TGID/task/ directories */
3779 struct task_struct *task; in proc_task_readdir() local
3795 for (task = first_tid(proc_pid(inode), tid, ctx->pos - 2, ns); in proc_task_readdir()
3796 task; in proc_task_readdir()
3797 task = next_tid(task), ctx->pos++) { in proc_task_readdir()
3800 tid = task_pid_nr_ns(task, ns); in proc_task_readdir()
3803 proc_task_instantiate, task, NULL)) { in proc_task_readdir()
3807 put_task_struct(task); in proc_task_readdir()