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
390 if (ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_pid_wchan()
391 wchan = get_wchan(task); in proc_pid_wchan()
404 static int lock_trace(struct task_struct *task) in lock_trace() argument
406 int err = down_read_killable(&task->signal->exec_update_lock); in lock_trace()
409 if (!ptrace_may_access(task, PTRACE_MODE_ATTACH_FSCREDS)) { in lock_trace()
410 up_read(&task->signal->exec_update_lock); in lock_trace()
416 static void unlock_trace(struct task_struct *task) in unlock_trace() argument
418 up_read(&task->signal->exec_update_lock); in unlock_trace()
426 struct pid *pid, struct task_struct *task) in proc_pid_stack() argument
432 * The ability to racily run the kernel stack unwinder on a running task in proc_pid_stack()
437 * some work to ensure that the remote task can not be scheduled; and in proc_pid_stack()
450 err = lock_trace(task); in proc_pid_stack()
454 nr_entries = stack_trace_save_tsk(task, entries, in proc_pid_stack()
461 unlock_trace(task); in proc_pid_stack()
474 struct pid *pid, struct task_struct *task) in proc_pid_schedstat() argument
480 (unsigned long long)task->se.sum_exec_runtime, in proc_pid_schedstat()
481 (unsigned long long)task->sched_info.run_delay, in proc_pid_schedstat()
482 task->sched_info.pcount); in proc_pid_schedstat()
493 struct task_struct *task = get_proc_task(inode); in lstats_show_proc() local
495 if (!task) in lstats_show_proc()
499 struct latency_record *lr = &task->latency_record[i]; in lstats_show_proc()
515 put_task_struct(task); in lstats_show_proc()
527 struct task_struct *task = get_proc_task(file_inode(file)); in lstats_write() local
529 if (!task) in lstats_write()
531 clear_tsk_latency_tracing(task); in lstats_write()
532 put_task_struct(task); in lstats_write()
548 struct pid *pid, struct task_struct *task) in proc_oom_score() argument
554 badness = oom_badness(task, totalpages); in proc_oom_score()
594 struct pid *pid, struct task_struct *task) in proc_pid_limits() argument
601 if (!lock_task_sighand(task, &flags)) in proc_pid_limits()
603 memcpy(rlim, task->signal->rlim, sizeof(struct rlimit) * RLIM_NLIMITS); in proc_pid_limits()
604 unlock_task_sighand(task, &flags); in proc_pid_limits()
638 struct pid *pid, struct task_struct *task) in proc_pid_syscall() argument
644 res = lock_trace(task); in proc_pid_syscall()
648 if (task_current_syscall(task, &info)) in proc_pid_syscall()
659 unlock_trace(task); in proc_pid_syscall()
672 struct task_struct *task; in proc_fd_access_allowed() local
674 /* Allow access to a task's file descriptors if it is us or we in proc_fd_access_allowed()
678 task = get_proc_task(inode); in proc_fd_access_allowed()
679 if (task) { in proc_fd_access_allowed()
680 allowed = ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in proc_fd_access_allowed()
681 put_task_struct(task); in proc_fd_access_allowed()
705 * May current process learn task's sched/cmdline info (for hide_pid_min=1)
709 struct task_struct *task, in has_pid_permissions() argument
718 return ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS); in has_pid_permissions()
724 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:
1722 struct task_struct *task; in proc_exe_link() local
1725 task = get_proc_task(d_inode(dentry)); in proc_exe_link()
1726 if (!task) in proc_exe_link()
1728 exe_file = get_task_exe_file(task); in proc_exe_link()
1729 put_task_struct(task); in proc_exe_link()
1815 void task_dump_owner(struct task_struct *task, umode_t mode, in task_dump_owner() argument
1819 * proc file for a task. in task_dump_owner()
1825 if (unlikely(task->flags & PF_KTHREAD)) { in task_dump_owner()
1833 cred = __task_cred(task); in task_dump_owner()
1848 task_lock(task); in task_dump_owner()
1849 mm = task->mm; in task_dump_owner()
1867 task_unlock(task); in task_dump_owner()
1887 struct task_struct *task, umode_t mode) in proc_pid_make_inode() argument
1907 * grab the reference to task. in proc_pid_make_inode()
1909 pid = get_task_pid(task, PIDTYPE_PID); in proc_pid_make_inode()
1921 task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid); in proc_pid_make_inode()
1922 security_task_to_inode(task, inode); in proc_pid_make_inode()
1937 struct task_struct *task; in pid_getattr() local
1944 task = pid_task(proc_pid(inode), PIDTYPE_PID); in pid_getattr()
1945 if (task) { in pid_getattr()
1946 if (!has_pid_permissions(fs_info, task, HIDEPID_INVISIBLE)) { in pid_getattr()
1954 task_dump_owner(task, inode->i_mode, &stat->uid, &stat->gid); in pid_getattr()
1965 void pid_update_inode(struct task_struct *task, struct inode *inode) in pid_update_inode() argument
1967 task_dump_owner(task, inode->i_mode, &inode->i_uid, &inode->i_gid); in pid_update_inode()
1970 security_task_to_inode(task, inode); in pid_update_inode()
1974 * Rewrite the inode's ownerships here because the owning task may have
1981 struct task_struct *task; in pid_revalidate() local
1987 task = get_proc_task(inode); in pid_revalidate()
1989 if (task) { in pid_revalidate()
1990 pid_update_inode(task, inode); in pid_revalidate()
1991 put_task_struct(task); in pid_revalidate()
2004 /* Is the task we represent dead? in pid_delete_dentry()
2033 instantiate_t instantiate, struct task_struct *task, const void *ptr) in proc_fill_cache() argument
2049 res = instantiate(child, task, ptr); in proc_fill_cache()
2114 struct task_struct *task; in map_files_d_revalidate() local
2122 task = get_proc_task(inode); in map_files_d_revalidate()
2123 if (!task) in map_files_d_revalidate()
2126 mm = mm_access(task, PTRACE_MODE_READ_FSCREDS); in map_files_d_revalidate()
2142 task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid); in map_files_d_revalidate()
2144 security_task_to_inode(task, inode); in map_files_d_revalidate()
2149 put_task_struct(task); in map_files_d_revalidate()
2164 struct task_struct *task; in map_files_get_link() local
2169 task = get_proc_task(d_inode(dentry)); in map_files_get_link()
2170 if (!task) in map_files_get_link()
2173 mm = get_task_mm(task); in map_files_get_link()
2174 put_task_struct(task); in map_files_get_link()
2234 struct task_struct *task, const void *ptr) in proc_map_files_instantiate() argument
2240 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFLNK | in proc_map_files_instantiate()
2261 struct task_struct *task; in proc_map_files_lookup() local
2266 task = get_proc_task(dir); in proc_map_files_lookup()
2267 if (!task) in proc_map_files_lookup()
2271 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_map_files_lookup()
2278 mm = get_task_mm(task); in proc_map_files_lookup()
2292 result = proc_map_files_instantiate(dentry, task, in proc_map_files_lookup()
2300 put_task_struct(task); in proc_map_files_lookup()
2315 struct task_struct *task; in proc_map_files_readdir() local
2325 task = get_proc_task(file_inode(file)); in proc_map_files_readdir()
2326 if (!task) in proc_map_files_readdir()
2330 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) in proc_map_files_readdir()
2337 mm = get_task_mm(task); in proc_map_files_readdir()
2389 task, in proc_map_files_readdir()
2396 put_task_struct(task); in proc_map_files_readdir()
2411 struct task_struct *task; member
2421 tp->task = get_pid_task(tp->pid, PIDTYPE_PID); in timers_start()
2422 if (!tp->task) in timers_start()
2425 tp->sighand = lock_task_sighand(tp->task, &tp->flags); in timers_start()
2429 return seq_list_start(&tp->task->signal->posix_timers, *pos); in timers_start()
2435 return seq_list_next(v, &tp->task->signal->posix_timers, pos); in timers_next()
2443 unlock_task_sighand(tp->task, &tp->flags); in timers_stop()
2447 if (tp->task) { in timers_stop()
2448 put_task_struct(tp->task); in timers_stop()
2449 tp->task = NULL; in timers_stop()
2602 struct task_struct *task, const void *ptr) in proc_pident_instantiate() argument
2608 inode = proc_pid_make_inode(dentry->d_sb, task, p->mode); in proc_pident_instantiate()
2620 pid_update_inode(task, inode); in proc_pident_instantiate()
2630 struct task_struct *task = get_proc_task(dir); in proc_pident_lookup() local
2633 if (!task) in proc_pident_lookup()
2644 res = proc_pident_instantiate(dentry, task, p); in proc_pident_lookup()
2648 put_task_struct(task); in proc_pident_lookup()
2656 struct task_struct *task = get_proc_task(file_inode(file)); in proc_pident_readdir() local
2659 if (!task) in proc_pident_readdir()
2670 proc_pident_instantiate, task, p)) in proc_pident_readdir()
2675 put_task_struct(task); in proc_pident_readdir()
2693 struct task_struct *task = get_proc_task(inode); in proc_pid_attr_read() local
2695 if (!task) in proc_pid_attr_read()
2698 length = security_getprocattr(task, PROC_I(inode)->op.lsm, in proc_pid_attr_read()
2701 put_task_struct(task); in proc_pid_attr_read()
2712 struct task_struct *task; in proc_pid_attr_write() local
2716 /* A task may only write when it was the opener. */ in proc_pid_attr_write()
2721 task = pid_task(proc_pid(inode), PIDTYPE_PID); in proc_pid_attr_write()
2722 if (!task) { in proc_pid_attr_write()
2726 /* A task may only write its own attributes. */ in proc_pid_attr_write()
2727 if (current != task) { in proc_pid_attr_write()
2868 struct task_struct *task = get_proc_task(file_inode(file)); in proc_coredump_filter_read() local
2874 if (!task) in proc_coredump_filter_read()
2878 mm = get_task_mm(task); in proc_coredump_filter_read()
2887 put_task_struct(task); in proc_coredump_filter_read()
2897 struct task_struct *task; in proc_coredump_filter_write() local
2909 task = get_proc_task(file_inode(file)); in proc_coredump_filter_write()
2910 if (!task) in proc_coredump_filter_write()
2913 mm = get_task_mm(task); in proc_coredump_filter_write()
2927 put_task_struct(task); in proc_coredump_filter_write()
2942 static int do_io_accounting(struct task_struct *task, struct seq_file *m, int whole) in do_io_accounting() argument
2944 struct task_io_accounting acct = task->ioac; in do_io_accounting()
2948 result = down_read_killable(&task->signal->exec_update_lock); in do_io_accounting()
2952 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) { in do_io_accounting()
2957 if (whole && lock_task_sighand(task, &flags)) { in do_io_accounting()
2958 struct task_struct *t = task; in do_io_accounting()
2960 task_io_accounting_add(&acct, &task->signal->ioac); in do_io_accounting()
2961 while_each_thread(task, t) in do_io_accounting()
2964 unlock_task_sighand(task, &flags); in do_io_accounting()
2984 up_read(&task->signal->exec_update_lock); in do_io_accounting()
2989 struct pid *pid, struct task_struct *task) in proc_tid_io_accounting() argument
2991 return do_io_accounting(task, m, 0); in proc_tid_io_accounting()
2995 struct pid *pid, struct task_struct *task) in proc_tgid_io_accounting() argument
2997 return do_io_accounting(task, m, 1); in proc_tgid_io_accounting()
3006 struct task_struct *task; in proc_id_map_open() local
3010 task = get_proc_task(inode); in proc_id_map_open()
3011 if (task) { in proc_id_map_open()
3013 ns = get_user_ns(task_cred_xxx(task, user_ns)); in proc_id_map_open()
3015 put_task_struct(task); in proc_id_map_open()
3084 struct task_struct *task; in proc_setgroups_open() local
3088 task = get_proc_task(inode); in proc_setgroups_open()
3089 if (task) { in proc_setgroups_open()
3091 ns = get_user_ns(task_cred_xxx(task, user_ns)); in proc_setgroups_open()
3093 put_task_struct(task); in proc_setgroups_open()
3134 struct pid *pid, struct task_struct *task) in proc_pid_personality() argument
3136 int err = lock_trace(task); in proc_pid_personality()
3138 seq_printf(m, "%08x\n", task->personality); in proc_pid_personality()
3139 unlock_trace(task); in proc_pid_personality()
3146 struct pid *pid, struct task_struct *task) in proc_pid_patch_state() argument
3148 seq_printf(m, "%d\n", task->patch_state); in proc_pid_patch_state()
3155 struct pid *pid, struct task_struct *task) in proc_stack_depth() argument
3158 (task->prev_lowest_stack & (THREAD_SIZE - 1)); in proc_stack_depth()
3160 (task->lowest_stack & (THREAD_SIZE - 1)); in proc_stack_depth()
3175 DIR("task", S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
3328 * It is safe and reasonable to cache /proc entries for a task until
3329 * that task exits. After that they just clog up the dcache with
3345 struct task_struct *task, const void *ptr) in proc_pid_instantiate() argument
3349 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFDIR | S_IRUGO | S_IXUGO); in proc_pid_instantiate()
3358 pid_update_inode(task, inode); in proc_pid_instantiate()
3366 struct task_struct *task; in proc_pid_lookup() local
3379 task = find_task_by_pid_ns(tgid, ns); in proc_pid_lookup()
3380 if (task) in proc_pid_lookup()
3381 get_task_struct(task); in proc_pid_lookup()
3383 if (!task) in proc_pid_lookup()
3388 if (!has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS)) in proc_pid_lookup()
3392 result = proc_pid_instantiate(dentry, task, NULL); in proc_pid_lookup()
3394 put_task_struct(task); in proc_pid_lookup()
3400 * Find the first task with tgid >= tgid
3405 struct task_struct *task; member
3411 if (iter.task) in next_tgid()
3412 put_task_struct(iter.task); in next_tgid()
3415 iter.task = NULL; in next_tgid()
3419 iter.task = pid_task(pid, PIDTYPE_TGID); in next_tgid()
3420 if (!iter.task) { in next_tgid()
3424 get_task_struct(iter.task); in next_tgid()
3456 iter.task = NULL; in proc_pid_readdir()
3458 iter.task; in proc_pid_readdir()
3464 if (!has_pid_permissions(fs_info, iter.task, HIDEPID_INVISIBLE)) in proc_pid_readdir()
3470 proc_pid_instantiate, iter.task, NULL)) { in proc_pid_readdir()
3471 put_task_struct(iter.task); in proc_pid_readdir()
3481 * used for the node /proc/<pid>/task/<tid>/comm.
3482 * It bypasses generic permission checks in the case where a task of the same
3483 * task group attempts to access the node.
3495 struct task_struct *task; in proc_tid_comm_permission() local
3497 task = get_proc_task(inode); in proc_tid_comm_permission()
3498 if (!task) in proc_tid_comm_permission()
3500 is_same_tgroup = same_thread_group(current, task); in proc_tid_comm_permission()
3501 put_task_struct(task); in proc_tid_comm_permission()
3504 /* This file (/proc/<pid>/task/<tid>/comm) can always be in proc_tid_comm_permission()
3645 struct task_struct *task, const void *ptr) in proc_task_instantiate() argument
3648 inode = proc_pid_make_inode(dentry->d_sb, task, S_IFDIR | S_IRUGO | S_IXUGO); in proc_task_instantiate()
3657 pid_update_inode(task, inode); in proc_task_instantiate()
3665 struct task_struct *task; in proc_task_lookup() local
3682 task = find_task_by_pid_ns(tid, ns); in proc_task_lookup()
3683 if (task) in proc_task_lookup()
3684 get_task_struct(task); in proc_task_lookup()
3686 if (!task) in proc_task_lookup()
3688 if (!same_thread_group(leader, task)) in proc_task_lookup()
3691 result = proc_task_instantiate(dentry, task, NULL); in proc_task_lookup()
3693 put_task_struct(task); in proc_task_lookup()
3715 struct task_struct *pos, *task; in first_tid() local
3722 task = pid_task(pid, PIDTYPE_PID); in first_tid()
3723 if (!task) in first_tid()
3729 if (pos && same_thread_group(pos, task)) in first_tid()
3734 if (nr >= get_nr_threads(task)) in first_tid()
3740 pos = task = task->group_leader; in first_tid()
3744 } while_each_thread(task, pos); in first_tid()
3777 /* for the /proc/TGID/task/ directories */
3781 struct task_struct *task; in proc_task_readdir() local
3797 for (task = first_tid(proc_pid(inode), tid, ctx->pos - 2, ns); in proc_task_readdir()
3798 task; in proc_task_readdir()
3799 task = next_tid(task), ctx->pos++) { in proc_task_readdir()
3802 tid = task_pid_nr_ns(task, ns); in proc_task_readdir()
3805 proc_task_instantiate, task, NULL)) { in proc_task_readdir()
3809 put_task_struct(task); in proc_task_readdir()