Lines Matching full:task
112 * in /proc for a task before it execs a suid executable.
172 static int get_task_root(struct task_struct *task, struct path *root) in get_task_root() argument
176 task_lock(task); in get_task_root()
177 if (task->fs) { in get_task_root()
178 get_fs_root(task->fs, root); in get_task_root()
181 task_unlock(task); in get_task_root()
187 struct task_struct *task = get_proc_task(d_inode(dentry)); in proc_cwd_link() local
190 if (task) { in proc_cwd_link()
191 task_lock(task); in proc_cwd_link()
192 if (task->fs) { in proc_cwd_link()
193 get_fs_pwd(task->fs, path); in proc_cwd_link()
196 task_unlock(task); in proc_cwd_link()
197 put_task_struct(task); in proc_cwd_link()
204 struct task_struct *task = get_proc_task(d_inode(dentry)); in proc_root_link() local
207 if (task) { in proc_root_link()
208 result = get_task_root(task, path); in proc_root_link()
209 put_task_struct(task); in proc_root_link()
386 struct pid *pid, struct task_struct *task) in proc_pid_wchan() argument
391 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_pid_wchan()
394 wchan = get_wchan(task); in proc_pid_wchan()
406 static int lock_trace(struct task_struct *task) in lock_trace() argument
408 int err = mutex_lock_killable(&task->signal->exec_update_mutex); in lock_trace()
411 if (!ptrace_may_access(task, PTRACE_MODE_ATTACH_FSCREDS)) { in lock_trace()
412 mutex_unlock(&task->signal->exec_update_mutex); in lock_trace()
418 static void unlock_trace(struct task_struct *task) in unlock_trace() argument
420 mutex_unlock(&task->signal->exec_update_mutex); in unlock_trace()
428 struct pid *pid, struct task_struct *task) in proc_pid_stack() argument
434 * The ability to racily run the kernel stack unwinder on a running task in proc_pid_stack()
439 * some work to ensure that the remote task can not be scheduled; and in proc_pid_stack()
452 err = lock_trace(task); in proc_pid_stack()
456 nr_entries = stack_trace_save_tsk(task, entries, in proc_pid_stack()
463 unlock_trace(task); in proc_pid_stack()
476 struct pid *pid, struct task_struct *task) in proc_pid_schedstat() argument
482 (unsigned long long)task->se.sum_exec_runtime, in proc_pid_schedstat()
483 (unsigned long long)task->sched_info.run_delay, in proc_pid_schedstat()
484 task->sched_info.pcount); in proc_pid_schedstat()
495 struct task_struct *task = get_proc_task(inode); in lstats_show_proc() local
497 if (!task) in lstats_show_proc()
501 struct latency_record *lr = &task->latency_record[i]; in lstats_show_proc()
517 put_task_struct(task); in lstats_show_proc()
529 struct task_struct *task = get_proc_task(file_inode(file)); in lstats_write() local
531 if (!task) in lstats_write()
533 clear_tsk_latency_tracing(task); in lstats_write()
534 put_task_struct(task); in lstats_write()
550 struct pid *pid, struct task_struct *task) in proc_oom_score() argument
556 badness = oom_badness(task, totalpages); in proc_oom_score()
596 struct pid *pid, struct task_struct *task) in proc_pid_limits() argument
603 if (!lock_task_sighand(task, &flags)) in proc_pid_limits()
605 memcpy(rlim, task->signal->rlim, sizeof(struct rlimit) * RLIM_NLIMITS); in proc_pid_limits()
606 unlock_task_sighand(task, &flags); in proc_pid_limits()
640 struct pid *pid, struct task_struct *task) in proc_pid_syscall() argument
646 res = lock_trace(task); in proc_pid_syscall()
650 if (task_current_syscall(task, &info)) in proc_pid_syscall()
661 unlock_trace(task); in proc_pid_syscall()
674 struct task_struct *task; in proc_fd_access_allowed() local
676 /* Allow access to a task's file descriptors if it is us or we in proc_fd_access_allowed()
680 task = get_proc_task(inode); in proc_fd_access_allowed()
681 if (task) { in proc_fd_access_allowed()
682 allowed = ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in proc_fd_access_allowed()
683 put_task_struct(task); in proc_fd_access_allowed()
706 * May current process learn task's sched/cmdline info (for hide_pid_min=1)
710 struct task_struct *task, in has_pid_permissions() argument
719 return ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in has_pid_permissions()
725 return ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in has_pid_permissions()
732 struct task_struct *task; in proc_pid_permission() local
735 task = get_proc_task(inode); in proc_pid_permission()
736 if (!task) in proc_pid_permission()
738 has_perms = has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS); in proc_pid_permission()
739 put_task_struct(task); in proc_pid_permission()
768 struct task_struct *task; in proc_single_show() local
771 task = get_pid_task(pid, PIDTYPE_PID); in proc_single_show()
772 if (!task) in proc_single_show()
775 ret = PROC_I(inode)->op.proc_show(m, ns, pid, task); in proc_single_show()
777 put_task_struct(task); in proc_single_show()
796 struct task_struct *task = get_proc_task(inode); in proc_mem_open() local
799 if (task) { in proc_mem_open()
800 mm = mm_access(task, mode | PTRACE_MODE_FSCREDS); in proc_mem_open()
801 put_task_struct(task); in proc_mem_open()
1039 struct task_struct *task = get_proc_task(file_inode(file)); in oom_adj_read() local
1044 if (!task) in oom_adj_read()
1046 if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MAX) in oom_adj_read()
1049 oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) / in oom_adj_read()
1051 put_task_struct(task); in oom_adj_read()
1061 struct task_struct *task; in __set_oom_adj() local
1064 task = get_proc_task(file_inode(file)); in __set_oom_adj()
1065 if (!task) in __set_oom_adj()
1070 if (oom_adj < task->signal->oom_score_adj && in __set_oom_adj()
1080 current->comm, task_pid_nr(current), task_pid_nr(task), in __set_oom_adj()
1081 task_pid_nr(task)); in __set_oom_adj()
1083 if ((short)oom_adj < task->signal->oom_score_adj_min && in __set_oom_adj()
1095 if (!task->vfork_done) { in __set_oom_adj()
1096 struct task_struct *p = find_lock_task_mm(task); in __set_oom_adj()
1107 task->signal->oom_score_adj = oom_adj; in __set_oom_adj()
1109 task->signal->oom_score_adj_min = (short)oom_adj; in __set_oom_adj()
1110 trace_oom_score_adj_update(task); in __set_oom_adj()
1117 if (same_thread_group(task, p)) in __set_oom_adj()
1137 put_task_struct(task); in __set_oom_adj()
1198 struct task_struct *task = get_proc_task(file_inode(file)); in oom_score_adj_read() local
1203 if (!task) in oom_score_adj_read()
1205 oom_score_adj = task->signal->oom_score_adj; in oom_score_adj_read()
1206 put_task_struct(task); in oom_score_adj_read()
1252 struct task_struct *task = get_proc_task(inode); in proc_loginuid_read() local
1256 if (!task) in proc_loginuid_read()
1260 audit_get_loginuid(task))); in proc_loginuid_read()
1261 put_task_struct(task); in proc_loginuid_read()
1318 struct task_struct *task = get_proc_task(inode); in proc_sessionid_read() local
1322 if (!task) in proc_sessionid_read()
1325 audit_get_sessionid(task)); in proc_sessionid_read()
1326 put_task_struct(task); in proc_sessionid_read()
1340 struct task_struct *task = get_proc_task(file_inode(file)); in proc_fault_inject_read() local
1345 if (!task) in proc_fault_inject_read()
1347 make_it_fail = task->make_it_fail; in proc_fault_inject_read()
1348 put_task_struct(task); in proc_fault_inject_read()
1358 struct task_struct *task; in proc_fault_inject_write() local
1376 task = get_proc_task(file_inode(file)); in proc_fault_inject_write()
1377 if (!task) in proc_fault_inject_write()
1379 task->make_it_fail = make_it_fail; in proc_fault_inject_write()
1380 put_task_struct(task); in proc_fault_inject_write()
1394 struct task_struct *task; in proc_fail_nth_write() local
1402 task = get_proc_task(file_inode(file)); in proc_fail_nth_write()
1403 if (!task) in proc_fail_nth_write()
1405 task->fail_nth = n; in proc_fail_nth_write()
1406 put_task_struct(task); in proc_fail_nth_write()
1414 struct task_struct *task; in proc_fail_nth_read() local
1418 task = get_proc_task(file_inode(file)); in proc_fail_nth_read()
1419 if (!task) in proc_fail_nth_read()
1421 len = snprintf(numbuf, sizeof(numbuf), "%u\n", task->fail_nth); in proc_fail_nth_read()
1422 put_task_struct(task); in proc_fail_nth_read()
1435 * Print out various scheduling related per-task fields:
1720 struct task_struct *task; in proc_exe_link() local
1723 task = get_proc_task(d_inode(dentry)); in proc_exe_link()
1724 if (!task) in proc_exe_link()
1726 exe_file = get_task_exe_file(task); in proc_exe_link()
1727 put_task_struct(task); in proc_exe_link()
1813 void task_dump_owner(struct task_struct *task, umode_t mode, in task_dump_owner() argument
1817 * proc file for a task. in task_dump_owner()
1823 if (unlikely(task->flags & PF_KTHREAD)) { in task_dump_owner()
1831 cred = __task_cred(task); in task_dump_owner()
1846 task_lock(task); in task_dump_owner()
1847 mm = task->mm; in task_dump_owner()
1865 task_unlock(task); in task_dump_owner()
1885 struct task_struct *task, umode_t mode) in proc_pid_make_inode() argument
1905 * grab the reference to task. in proc_pid_make_inode()
1907 pid = get_task_pid(task, PIDTYPE_PID); in proc_pid_make_inode()
1919 task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid); in proc_pid_make_inode()
1920 security_task_to_inode(task, inode); in proc_pid_make_inode()
1935 struct task_struct *task; in pid_getattr() local
1942 task = pid_task(proc_pid(inode), PIDTYPE_PID); in pid_getattr()
1943 if (task) { in pid_getattr()
1944 if (!has_pid_permissions(fs_info, task, HIDEPID_INVISIBLE)) { in pid_getattr()
1952 task_dump_owner(task, inode->i_mode, &stat->uid, &stat->gid); in pid_getattr()
1963 void pid_update_inode(struct task_struct *task, struct inode *inode) in pid_update_inode() argument
1965 task_dump_owner(task, inode->i_mode, &inode->i_uid, &inode->i_gid); in pid_update_inode()
1968 security_task_to_inode(task, inode); in pid_update_inode()
1972 * Rewrite the inode's ownerships here because the owning task may have
1979 struct task_struct *task; in pid_revalidate() local
1985 task = get_proc_task(inode); in pid_revalidate()
1987 if (task) { in pid_revalidate()
1988 pid_update_inode(task, inode); in pid_revalidate()
1989 put_task_struct(task); in pid_revalidate()
2002 /* Is the task we represent dead? in pid_delete_dentry()
2031 instantiate_t instantiate, struct task_struct *task, const void *ptr) in proc_fill_cache() argument
2047 res = instantiate(child, task, ptr); in proc_fill_cache()
2112 struct task_struct *task; in map_files_d_revalidate() local
2120 task = get_proc_task(inode); in map_files_d_revalidate()
2121 if (!task) in map_files_d_revalidate()
2124 mm = mm_access(task, PTRACE_MODE_READ_FSCREDS); in map_files_d_revalidate()
2140 task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid); in map_files_d_revalidate()
2142 security_task_to_inode(task, inode); in map_files_d_revalidate()
2147 put_task_struct(task); in map_files_d_revalidate()
2162 struct task_struct *task; in map_files_get_link() local
2167 task = get_proc_task(d_inode(dentry)); in map_files_get_link()
2168 if (!task) in map_files_get_link()
2171 mm = get_task_mm(task); in map_files_get_link()
2172 put_task_struct(task); in map_files_get_link()
2232 struct task_struct *task, const void *ptr) in proc_map_files_instantiate() argument
2238 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFLNK | in proc_map_files_instantiate()
2259 struct task_struct *task; in proc_map_files_lookup() local
2264 task = get_proc_task(dir); in proc_map_files_lookup()
2265 if (!task) in proc_map_files_lookup()
2269 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_map_files_lookup()
2276 mm = get_task_mm(task); in proc_map_files_lookup()
2290 result = proc_map_files_instantiate(dentry, task, in proc_map_files_lookup()
2298 put_task_struct(task); in proc_map_files_lookup()
2313 struct task_struct *task; in proc_map_files_readdir() local
2323 task = get_proc_task(file_inode(file)); in proc_map_files_readdir()
2324 if (!task) in proc_map_files_readdir()
2328 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_map_files_readdir()
2335 mm = get_task_mm(task); in proc_map_files_readdir()
2387 task, in proc_map_files_readdir()
2394 put_task_struct(task); in proc_map_files_readdir()
2409 struct task_struct *task; member
2419 tp->task = get_pid_task(tp->pid, PIDTYPE_PID); in timers_start()
2420 if (!tp->task) in timers_start()
2423 tp->sighand = lock_task_sighand(tp->task, &tp->flags); in timers_start()
2427 return seq_list_start(&tp->task->signal->posix_timers, *pos); in timers_start()
2433 return seq_list_next(v, &tp->task->signal->posix_timers, pos); in timers_next()
2441 unlock_task_sighand(tp->task, &tp->flags); in timers_stop()
2445 if (tp->task) { in timers_stop()
2446 put_task_struct(tp->task); in timers_stop()
2447 tp->task = NULL; in timers_stop()
2600 struct task_struct *task, const void *ptr) in proc_pident_instantiate() argument
2606 inode = proc_pid_make_inode(dentry->d_sb, task, p->mode); in proc_pident_instantiate()
2618 pid_update_inode(task, inode); in proc_pident_instantiate()
2628 struct task_struct *task = get_proc_task(dir); in proc_pident_lookup() local
2631 if (!task) in proc_pident_lookup()
2642 res = proc_pident_instantiate(dentry, task, p); in proc_pident_lookup()
2646 put_task_struct(task); in proc_pident_lookup()
2654 struct task_struct *task = get_proc_task(file_inode(file)); in proc_pident_readdir() local
2657 if (!task) in proc_pident_readdir()
2668 proc_pident_instantiate, task, p)) in proc_pident_readdir()
2673 put_task_struct(task); in proc_pident_readdir()
2684 struct task_struct *task = get_proc_task(inode); in proc_pid_attr_read() local
2686 if (!task) in proc_pid_attr_read()
2689 length = security_getprocattr(task, PROC_I(inode)->op.lsm, in proc_pid_attr_read()
2692 put_task_struct(task); in proc_pid_attr_read()
2703 struct task_struct *task; in proc_pid_attr_write() local
2708 task = pid_task(proc_pid(inode), PIDTYPE_PID); in proc_pid_attr_write()
2709 if (!task) { in proc_pid_attr_write()
2713 /* A task may only write its own attributes. */ in proc_pid_attr_write()
2714 if (current != task) { in proc_pid_attr_write()
2853 struct task_struct *task = get_proc_task(file_inode(file)); in proc_coredump_filter_read() local
2859 if (!task) in proc_coredump_filter_read()
2863 mm = get_task_mm(task); in proc_coredump_filter_read()
2872 put_task_struct(task); in proc_coredump_filter_read()
2882 struct task_struct *task; in proc_coredump_filter_write() local
2894 task = get_proc_task(file_inode(file)); in proc_coredump_filter_write()
2895 if (!task) in proc_coredump_filter_write()
2898 mm = get_task_mm(task); in proc_coredump_filter_write()
2912 put_task_struct(task); in proc_coredump_filter_write()
2927 static int do_io_accounting(struct task_struct *task, struct seq_file *m, int whole) in do_io_accounting() argument
2929 struct task_io_accounting acct = task->ioac; in do_io_accounting()
2933 result = mutex_lock_killable(&task->signal->exec_update_mutex); in do_io_accounting()
2937 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) { in do_io_accounting()
2942 if (whole && lock_task_sighand(task, &flags)) { in do_io_accounting()
2943 struct task_struct *t = task; in do_io_accounting()
2945 task_io_accounting_add(&acct, &task->signal->ioac); in do_io_accounting()
2946 while_each_thread(task, t) in do_io_accounting()
2949 unlock_task_sighand(task, &flags); in do_io_accounting()
2969 mutex_unlock(&task->signal->exec_update_mutex); in do_io_accounting()
2974 struct pid *pid, struct task_struct *task) in proc_tid_io_accounting() argument
2976 return do_io_accounting(task, m, 0); in proc_tid_io_accounting()
2980 struct pid *pid, struct task_struct *task) in proc_tgid_io_accounting() argument
2982 return do_io_accounting(task, m, 1); in proc_tgid_io_accounting()
2991 struct task_struct *task; in proc_id_map_open() local
2995 task = get_proc_task(inode); in proc_id_map_open()
2996 if (task) { in proc_id_map_open()
2998 ns = get_user_ns(task_cred_xxx(task, user_ns)); in proc_id_map_open()
3000 put_task_struct(task); in proc_id_map_open()
3069 struct task_struct *task; in proc_setgroups_open() local
3073 task = get_proc_task(inode); in proc_setgroups_open()
3074 if (task) { in proc_setgroups_open()
3076 ns = get_user_ns(task_cred_xxx(task, user_ns)); in proc_setgroups_open()
3078 put_task_struct(task); in proc_setgroups_open()
3119 struct pid *pid, struct task_struct *task) in proc_pid_personality() argument
3121 int err = lock_trace(task); in proc_pid_personality()
3123 seq_printf(m, "%08x\n", task->personality); in proc_pid_personality()
3124 unlock_trace(task); in proc_pid_personality()
3131 struct pid *pid, struct task_struct *task) in proc_pid_patch_state() argument
3133 seq_printf(m, "%d\n", task->patch_state); in proc_pid_patch_state()
3140 struct pid *pid, struct task_struct *task) in proc_stack_depth() argument
3143 (task->prev_lowest_stack & (THREAD_SIZE - 1)); in proc_stack_depth()
3145 (task->lowest_stack & (THREAD_SIZE - 1)); in proc_stack_depth()
3160 DIR("task", S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
3310 * It is safe and reasonable to cache /proc entries for a task until
3311 * that task exits. After that they just clog up the dcache with
3327 struct task_struct *task, const void *ptr) in proc_pid_instantiate() argument
3331 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFDIR | S_IRUGO | S_IXUGO); in proc_pid_instantiate()
3340 pid_update_inode(task, inode); in proc_pid_instantiate()
3348 struct task_struct *task; in proc_pid_lookup() local
3361 task = find_task_by_pid_ns(tgid, ns); in proc_pid_lookup()
3362 if (task) in proc_pid_lookup()
3363 get_task_struct(task); in proc_pid_lookup()
3365 if (!task) in proc_pid_lookup()
3370 if (!has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS)) in proc_pid_lookup()
3374 result = proc_pid_instantiate(dentry, task, NULL); in proc_pid_lookup()
3376 put_task_struct(task); in proc_pid_lookup()
3382 * Find the first task with tgid >= tgid
3387 struct task_struct *task; member
3393 if (iter.task) in next_tgid()
3394 put_task_struct(iter.task); in next_tgid()
3397 iter.task = NULL; in next_tgid()
3401 iter.task = pid_task(pid, PIDTYPE_TGID); in next_tgid()
3402 if (!iter.task) { in next_tgid()
3406 get_task_struct(iter.task); in next_tgid()
3438 iter.task = NULL; in proc_pid_readdir()
3440 iter.task; in proc_pid_readdir()
3446 if (!has_pid_permissions(fs_info, iter.task, HIDEPID_INVISIBLE)) in proc_pid_readdir()
3452 proc_pid_instantiate, iter.task, NULL)) { in proc_pid_readdir()
3453 put_task_struct(iter.task); in proc_pid_readdir()
3463 * used for the node /proc/<pid>/task/<tid>/comm.
3464 * It bypasses generic permission checks in the case where a task of the same
3465 * task group attempts to access the node.
3476 struct task_struct *task; in proc_tid_comm_permission() local
3478 task = get_proc_task(inode); in proc_tid_comm_permission()
3479 if (!task) in proc_tid_comm_permission()
3481 is_same_tgroup = same_thread_group(current, task); in proc_tid_comm_permission()
3482 put_task_struct(task); in proc_tid_comm_permission()
3485 /* This file (/proc/<pid>/task/<tid>/comm) can always be in proc_tid_comm_permission()
3623 struct task_struct *task, const void *ptr) in proc_task_instantiate() argument
3626 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFDIR | S_IRUGO | S_IXUGO); in proc_task_instantiate()
3635 pid_update_inode(task, inode); in proc_task_instantiate()
3643 struct task_struct *task; in proc_task_lookup() local
3660 task = find_task_by_pid_ns(tid, ns); in proc_task_lookup()
3661 if (task) in proc_task_lookup()
3662 get_task_struct(task); in proc_task_lookup()
3664 if (!task) in proc_task_lookup()
3666 if (!same_thread_group(leader, task)) in proc_task_lookup()
3669 result = proc_task_instantiate(dentry, task, NULL); in proc_task_lookup()
3671 put_task_struct(task); in proc_task_lookup()
3693 struct task_struct *pos, *task; in first_tid() local
3700 task = pid_task(pid, PIDTYPE_PID); in first_tid()
3701 if (!task) in first_tid()
3707 if (pos && same_thread_group(pos, task)) in first_tid()
3712 if (nr >= get_nr_threads(task)) in first_tid()
3718 pos = task = task->group_leader; in first_tid()
3722 } while_each_thread(task, pos); in first_tid()
3755 /* for the /proc/TGID/task/ directories */
3759 struct task_struct *task; in proc_task_readdir() local
3775 for (task = first_tid(proc_pid(inode), tid, ctx->pos - 2, ns); in proc_task_readdir()
3776 task; in proc_task_readdir()
3777 task = next_tid(task), ctx->pos++) { in proc_task_readdir()
3780 tid = task_pid_nr_ns(task, ns); in proc_task_readdir()
3783 proc_task_instantiate, task, NULL)) { in proc_task_readdir()
3787 put_task_struct(task); in proc_task_readdir()