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git://source.winehq.org/git/wine.git
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1266 lines
40 KiB
C
1266 lines
40 KiB
C
/*
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* Server-side process management
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*
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* Copyright (C) 1998 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <limits.h>
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#include <signal.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include <unistd.h>
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#ifdef HAVE_POLL_H
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#include <poll.h>
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#endif
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "winternl.h"
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#include "file.h"
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#include "handle.h"
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#include "process.h"
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#include "thread.h"
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#include "request.h"
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#include "user.h"
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#include "security.h"
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/* process structure */
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static struct list process_list = LIST_INIT(process_list);
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static int running_processes, user_processes;
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static struct event *shutdown_event; /* signaled when shutdown starts */
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static struct timeout_user *shutdown_timeout; /* timeout for server shutdown */
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static int shutdown_stage; /* current stage in the shutdown process */
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/* process operations */
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static void process_dump( struct object *obj, int verbose );
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static int process_signaled( struct object *obj, struct thread *thread );
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static unsigned int process_map_access( struct object *obj, unsigned int access );
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static void process_poll_event( struct fd *fd, int event );
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static void process_destroy( struct object *obj );
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static const struct object_ops process_ops =
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{
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sizeof(struct process), /* size */
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process_dump, /* dump */
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no_get_type, /* get_type */
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add_queue, /* add_queue */
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remove_queue, /* remove_queue */
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process_signaled, /* signaled */
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no_satisfied, /* satisfied */
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no_signal, /* signal */
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no_get_fd, /* get_fd */
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process_map_access, /* map_access */
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default_get_sd, /* get_sd */
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default_set_sd, /* set_sd */
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no_lookup_name, /* lookup_name */
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no_open_file, /* open_file */
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no_close_handle, /* close_handle */
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process_destroy /* destroy */
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};
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static const struct fd_ops process_fd_ops =
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{
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NULL, /* get_poll_events */
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process_poll_event, /* poll_event */
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NULL, /* flush */
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NULL, /* get_fd_type */
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NULL, /* ioctl */
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NULL, /* queue_async */
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NULL, /* reselect_async */
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NULL /* cancel async */
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};
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/* process startup info */
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struct startup_info
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{
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struct object obj; /* object header */
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struct file *exe_file; /* file handle for main exe */
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struct process *process; /* created process */
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data_size_t info_size; /* size of startup info */
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data_size_t data_size; /* size of whole startup data */
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startup_info_t *data; /* data for startup info */
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};
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static void startup_info_dump( struct object *obj, int verbose );
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static int startup_info_signaled( struct object *obj, struct thread *thread );
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static void startup_info_destroy( struct object *obj );
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static const struct object_ops startup_info_ops =
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{
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sizeof(struct startup_info), /* size */
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startup_info_dump, /* dump */
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no_get_type, /* get_type */
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add_queue, /* add_queue */
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remove_queue, /* remove_queue */
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startup_info_signaled, /* signaled */
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no_satisfied, /* satisfied */
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no_signal, /* signal */
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no_get_fd, /* get_fd */
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no_map_access, /* map_access */
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default_get_sd, /* get_sd */
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default_set_sd, /* set_sd */
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no_lookup_name, /* lookup_name */
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no_open_file, /* open_file */
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no_close_handle, /* close_handle */
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startup_info_destroy /* destroy */
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};
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struct ptid_entry
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{
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void *ptr; /* entry ptr */
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unsigned int next; /* next free entry */
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};
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static struct ptid_entry *ptid_entries; /* array of ptid entries */
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static unsigned int used_ptid_entries; /* number of entries in use */
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static unsigned int alloc_ptid_entries; /* number of allocated entries */
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static unsigned int next_free_ptid; /* next free entry */
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static unsigned int last_free_ptid; /* last free entry */
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static void kill_all_processes(void);
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#define PTID_OFFSET 8 /* offset for first ptid value */
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/* allocate a new process or thread id */
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unsigned int alloc_ptid( void *ptr )
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{
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struct ptid_entry *entry;
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unsigned int id;
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if (used_ptid_entries < alloc_ptid_entries)
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{
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id = used_ptid_entries + PTID_OFFSET;
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entry = &ptid_entries[used_ptid_entries++];
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}
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else if (next_free_ptid)
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{
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id = next_free_ptid;
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entry = &ptid_entries[id - PTID_OFFSET];
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if (!(next_free_ptid = entry->next)) last_free_ptid = 0;
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}
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else /* need to grow the array */
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{
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unsigned int count = alloc_ptid_entries + (alloc_ptid_entries / 2);
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if (!count) count = 64;
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if (!(entry = realloc( ptid_entries, count * sizeof(*entry) )))
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{
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set_error( STATUS_NO_MEMORY );
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return 0;
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}
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ptid_entries = entry;
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alloc_ptid_entries = count;
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id = used_ptid_entries + PTID_OFFSET;
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entry = &ptid_entries[used_ptid_entries++];
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}
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entry->ptr = ptr;
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return id;
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}
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/* free a process or thread id */
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void free_ptid( unsigned int id )
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{
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struct ptid_entry *entry = &ptid_entries[id - PTID_OFFSET];
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entry->ptr = NULL;
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entry->next = 0;
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/* append to end of free list so that we don't reuse it too early */
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if (last_free_ptid) ptid_entries[last_free_ptid - PTID_OFFSET].next = id;
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else next_free_ptid = id;
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last_free_ptid = id;
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}
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/* retrieve the pointer corresponding to a process or thread id */
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void *get_ptid_entry( unsigned int id )
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{
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if (id < PTID_OFFSET) return NULL;
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if (id - PTID_OFFSET >= used_ptid_entries) return NULL;
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return ptid_entries[id - PTID_OFFSET].ptr;
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}
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/* return the main thread of the process */
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struct thread *get_process_first_thread( struct process *process )
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{
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struct list *ptr = list_head( &process->thread_list );
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if (!ptr) return NULL;
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return LIST_ENTRY( ptr, struct thread, proc_entry );
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}
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/* set the state of the process startup info */
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static void set_process_startup_state( struct process *process, enum startup_state state )
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{
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if (process->startup_state == STARTUP_IN_PROGRESS) process->startup_state = state;
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if (process->startup_info)
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{
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wake_up( &process->startup_info->obj, 0 );
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release_object( process->startup_info );
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process->startup_info = NULL;
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}
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}
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/* callback for server shutdown */
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static void server_shutdown_timeout( void *arg )
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{
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shutdown_timeout = NULL;
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if (!running_processes)
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{
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close_master_socket( 0 );
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return;
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}
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switch(++shutdown_stage)
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{
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case 1: /* signal system processes to exit */
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if (debug_level) fprintf( stderr, "wineserver: shutting down\n" );
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if (shutdown_event) set_event( shutdown_event );
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shutdown_timeout = add_timeout_user( 2 * -TICKS_PER_SEC, server_shutdown_timeout, NULL );
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close_master_socket( 4 * -TICKS_PER_SEC );
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break;
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case 2: /* now forcibly kill all processes (but still wait for SIGKILL timeouts) */
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kill_all_processes();
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break;
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}
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}
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/* forced shutdown, used for wineserver -k */
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void shutdown_master_socket(void)
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{
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kill_all_processes();
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shutdown_stage = 2;
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if (shutdown_timeout)
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{
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remove_timeout_user( shutdown_timeout );
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shutdown_timeout = NULL;
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}
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close_master_socket( 2 * -TICKS_PER_SEC ); /* for SIGKILL timeouts */
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}
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/* final cleanup once we are sure a process is really dead */
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static void process_died( struct process *process )
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{
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if (debug_level) fprintf( stderr, "%04x: *process killed*\n", process->id );
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if (!process->is_system)
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{
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if (!--user_processes && !shutdown_stage && master_socket_timeout != TIMEOUT_INFINITE)
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shutdown_timeout = add_timeout_user( master_socket_timeout, server_shutdown_timeout, NULL );
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}
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release_object( process );
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if (!--running_processes && shutdown_stage) close_master_socket( 0 );
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}
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/* callback for process sigkill timeout */
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static void process_sigkill( void *private )
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{
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struct process *process = private;
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process->sigkill_timeout = NULL;
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kill( process->unix_pid, SIGKILL );
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process_died( process );
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}
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/* start the sigkill timer for a process upon exit */
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static void start_sigkill_timer( struct process *process )
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{
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grab_object( process );
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if (process->unix_pid != -1 && process->msg_fd)
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process->sigkill_timeout = add_timeout_user( -TICKS_PER_SEC, process_sigkill, process );
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else
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process_died( process );
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}
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/* create a new process and its main thread */
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/* if the function fails the fd is closed */
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struct thread *create_process( int fd, struct thread *parent_thread, int inherit_all )
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{
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struct process *process;
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struct thread *thread = NULL;
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int request_pipe[2];
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if (!(process = alloc_object( &process_ops )))
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{
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close( fd );
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goto error;
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}
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process->parent = NULL;
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process->debugger = NULL;
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process->handles = NULL;
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process->msg_fd = NULL;
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process->sigkill_timeout = NULL;
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process->unix_pid = -1;
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process->exit_code = STILL_ACTIVE;
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process->running_threads = 0;
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process->priority = PROCESS_PRIOCLASS_NORMAL;
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process->suspend = 0;
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process->is_system = 0;
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process->debug_children = 0;
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process->console = NULL;
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process->startup_state = STARTUP_IN_PROGRESS;
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process->startup_info = NULL;
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process->idle_event = NULL;
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process->peb = 0;
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process->ldt_copy = 0;
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process->winstation = 0;
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process->desktop = 0;
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process->token = NULL;
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process->trace_data = 0;
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list_init( &process->thread_list );
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list_init( &process->locks );
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list_init( &process->classes );
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list_init( &process->dlls );
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process->start_time = current_time;
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process->end_time = 0;
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list_add_tail( &process_list, &process->entry );
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if (!(process->id = process->group_id = alloc_ptid( process )))
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{
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close( fd );
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goto error;
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}
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if (!(process->msg_fd = create_anonymous_fd( &process_fd_ops, fd, &process->obj, 0 ))) goto error;
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/* create the handle table */
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if (!parent_thread)
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{
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process->handles = alloc_handle_table( process, 0 );
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process->token = token_create_admin();
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process->affinity = ~0;
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}
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else
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{
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struct process *parent = parent_thread->process;
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process->parent = (struct process *)grab_object( parent );
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process->handles = inherit_all ? copy_handle_table( process, parent )
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: alloc_handle_table( process, 0 );
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/* Note: for security reasons, starting a new process does not attempt
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* to use the current impersonation token for the new process */
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process->token = token_duplicate( parent->token, TRUE, 0 );
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process->affinity = parent->affinity;
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}
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if (!process->handles || !process->token) goto error;
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/* create the main thread */
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if (pipe( request_pipe ) == -1)
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{
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file_set_error();
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goto error;
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}
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if (send_client_fd( process, request_pipe[1], SERVER_PROTOCOL_VERSION ) == -1)
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{
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close( request_pipe[0] );
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close( request_pipe[1] );
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goto error;
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}
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close( request_pipe[1] );
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if (!(thread = create_thread( request_pipe[0], process ))) goto error;
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set_fd_events( process->msg_fd, POLLIN ); /* start listening to events */
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release_object( process );
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return thread;
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error:
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if (process) release_object( process );
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/* if we failed to start our first process, close everything down */
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if (!running_processes) close_master_socket( 0 );
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return NULL;
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}
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/* initialize the current process and fill in the request */
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data_size_t init_process( struct thread *thread )
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{
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struct process *process = thread->process;
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struct startup_info *info = process->startup_info;
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init_process_tracing( process );
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if (!info) return 0;
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return info->data_size;
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}
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/* destroy a process when its refcount is 0 */
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static void process_destroy( struct object *obj )
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{
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struct process *process = (struct process *)obj;
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assert( obj->ops == &process_ops );
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/* we can't have a thread remaining */
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assert( list_empty( &process->thread_list ));
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assert( !process->sigkill_timeout ); /* timeout should hold a reference to the process */
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close_process_handles( process );
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set_process_startup_state( process, STARTUP_ABORTED );
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if (process->console) release_object( process->console );
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if (process->parent) release_object( process->parent );
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if (process->msg_fd) release_object( process->msg_fd );
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list_remove( &process->entry );
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if (process->idle_event) release_object( process->idle_event );
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if (process->id) free_ptid( process->id );
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if (process->token) release_object( process->token );
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}
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/* dump a process on stdout for debugging purposes */
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static void process_dump( struct object *obj, int verbose )
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{
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struct process *process = (struct process *)obj;
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assert( obj->ops == &process_ops );
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fprintf( stderr, "Process id=%04x handles=%p\n", process->id, process->handles );
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}
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static int process_signaled( struct object *obj, struct thread *thread )
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{
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struct process *process = (struct process *)obj;
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return !process->running_threads;
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}
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static unsigned int process_map_access( struct object *obj, unsigned int access )
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{
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if (access & GENERIC_READ) access |= STANDARD_RIGHTS_READ | SYNCHRONIZE;
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if (access & GENERIC_WRITE) access |= STANDARD_RIGHTS_WRITE | SYNCHRONIZE;
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if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE;
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if (access & GENERIC_ALL) access |= PROCESS_ALL_ACCESS;
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return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
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}
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|
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static void process_poll_event( struct fd *fd, int event )
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{
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struct process *process = get_fd_user( fd );
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assert( process->obj.ops == &process_ops );
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if (event & (POLLERR | POLLHUP)) kill_process( process, 0 );
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else if (event & POLLIN) receive_fd( process );
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}
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|
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static void startup_info_destroy( struct object *obj )
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{
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struct startup_info *info = (struct startup_info *)obj;
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assert( obj->ops == &startup_info_ops );
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free( info->data );
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if (info->exe_file) release_object( info->exe_file );
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if (info->process) release_object( info->process );
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}
|
|
|
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static void startup_info_dump( struct object *obj, int verbose )
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{
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struct startup_info *info = (struct startup_info *)obj;
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assert( obj->ops == &startup_info_ops );
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|
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fprintf( stderr, "Startup info in=%04x out=%04x err=%04x\n",
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info->data->hstdin, info->data->hstdout, info->data->hstderr );
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}
|
|
|
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static int startup_info_signaled( struct object *obj, struct thread *thread )
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{
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struct startup_info *info = (struct startup_info *)obj;
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return info->process && info->process->startup_state != STARTUP_IN_PROGRESS;
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}
|
|
|
|
/* get a process from an id (and increment the refcount) */
|
|
struct process *get_process_from_id( process_id_t id )
|
|
{
|
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struct object *obj = get_ptid_entry( id );
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|
|
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if (obj && obj->ops == &process_ops) return (struct process *)grab_object( obj );
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set_error( STATUS_INVALID_PARAMETER );
|
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return NULL;
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}
|
|
|
|
/* get a process from a handle (and increment the refcount) */
|
|
struct process *get_process_from_handle( obj_handle_t handle, unsigned int access )
|
|
{
|
|
return (struct process *)get_handle_obj( current->process, handle,
|
|
access, &process_ops );
|
|
}
|
|
|
|
/* find a dll from its base address */
|
|
static inline struct process_dll *find_process_dll( struct process *process, mod_handle_t base )
|
|
{
|
|
struct process_dll *dll;
|
|
|
|
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
|
|
{
|
|
if (dll->base == base) return dll;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* add a dll to a process list */
|
|
static struct process_dll *process_load_dll( struct process *process, struct mapping *mapping,
|
|
mod_handle_t base, const WCHAR *filename,
|
|
data_size_t name_len )
|
|
{
|
|
struct process_dll *dll;
|
|
|
|
/* make sure we don't already have one with the same base address */
|
|
if (find_process_dll( process, base ))
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return NULL;
|
|
}
|
|
|
|
if ((dll = mem_alloc( sizeof(*dll) )))
|
|
{
|
|
dll->mapping = NULL;
|
|
dll->base = base;
|
|
dll->filename = NULL;
|
|
dll->namelen = name_len;
|
|
if (name_len && !(dll->filename = memdup( filename, name_len )))
|
|
{
|
|
free( dll );
|
|
return NULL;
|
|
}
|
|
if (mapping) dll->mapping = grab_mapping_unless_removable( mapping );
|
|
list_add_tail( &process->dlls, &dll->entry );
|
|
}
|
|
return dll;
|
|
}
|
|
|
|
/* remove a dll from a process list */
|
|
static void process_unload_dll( struct process *process, mod_handle_t base )
|
|
{
|
|
struct process_dll *dll = find_process_dll( process, base );
|
|
|
|
if (dll && (&dll->entry != list_head( &process->dlls ))) /* main exe can't be unloaded */
|
|
{
|
|
if (dll->mapping) release_object( dll->mapping );
|
|
free( dll->filename );
|
|
list_remove( &dll->entry );
|
|
free( dll );
|
|
generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, &base );
|
|
}
|
|
else set_error( STATUS_INVALID_PARAMETER );
|
|
}
|
|
|
|
/* terminate a process with the given exit code */
|
|
static void terminate_process( struct process *process, struct thread *skip, int exit_code )
|
|
{
|
|
struct thread *thread;
|
|
|
|
grab_object( process ); /* make sure it doesn't get freed when threads die */
|
|
restart:
|
|
LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
|
|
{
|
|
if (exit_code) thread->exit_code = exit_code;
|
|
if (thread == skip) continue;
|
|
if (thread->state == TERMINATED) continue;
|
|
kill_thread( thread, 1 );
|
|
goto restart;
|
|
}
|
|
release_object( process );
|
|
}
|
|
|
|
/* kill all processes */
|
|
static void kill_all_processes(void)
|
|
{
|
|
for (;;)
|
|
{
|
|
struct process *process;
|
|
|
|
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
|
|
{
|
|
if (process->running_threads) break;
|
|
}
|
|
if (&process->entry == &process_list) break; /* no process found */
|
|
terminate_process( process, NULL, 1 );
|
|
}
|
|
}
|
|
|
|
/* kill all processes being attached to a console renderer */
|
|
void kill_console_processes( struct thread *renderer, int exit_code )
|
|
{
|
|
for (;;) /* restart from the beginning of the list every time */
|
|
{
|
|
struct process *process;
|
|
|
|
/* find the first process being attached to 'renderer' and still running */
|
|
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
|
|
{
|
|
if (process == renderer->process) continue;
|
|
if (!process->running_threads) continue;
|
|
if (process->console && console_get_renderer( process->console ) == renderer) break;
|
|
}
|
|
if (&process->entry == &process_list) break; /* no process found */
|
|
terminate_process( process, NULL, exit_code );
|
|
}
|
|
}
|
|
|
|
/* a process has been killed (i.e. its last thread died) */
|
|
static void process_killed( struct process *process )
|
|
{
|
|
struct list *ptr;
|
|
|
|
assert( list_empty( &process->thread_list ));
|
|
process->end_time = current_time;
|
|
if (!process->is_system) close_process_desktop( process );
|
|
close_process_handles( process );
|
|
process->winstation = 0;
|
|
process->desktop = 0;
|
|
if (process->idle_event)
|
|
{
|
|
release_object( process->idle_event );
|
|
process->idle_event = NULL;
|
|
}
|
|
|
|
/* close the console attached to this process, if any */
|
|
free_console( process );
|
|
|
|
while ((ptr = list_head( &process->dlls )))
|
|
{
|
|
struct process_dll *dll = LIST_ENTRY( ptr, struct process_dll, entry );
|
|
if (dll->mapping) release_object( dll->mapping );
|
|
free( dll->filename );
|
|
list_remove( &dll->entry );
|
|
free( dll );
|
|
}
|
|
destroy_process_classes( process );
|
|
free_process_user_handles( process );
|
|
remove_process_locks( process );
|
|
set_process_startup_state( process, STARTUP_ABORTED );
|
|
finish_process_tracing( process );
|
|
start_sigkill_timer( process );
|
|
wake_up( &process->obj, 0 );
|
|
}
|
|
|
|
/* add a thread to a process running threads list */
|
|
void add_process_thread( struct process *process, struct thread *thread )
|
|
{
|
|
list_add_tail( &process->thread_list, &thread->proc_entry );
|
|
if (!process->running_threads++)
|
|
{
|
|
running_processes++;
|
|
if (!process->is_system)
|
|
{
|
|
if (!user_processes++ && shutdown_timeout)
|
|
{
|
|
remove_timeout_user( shutdown_timeout );
|
|
shutdown_timeout = NULL;
|
|
}
|
|
}
|
|
}
|
|
grab_object( thread );
|
|
}
|
|
|
|
/* remove a thread from a process running threads list */
|
|
void remove_process_thread( struct process *process, struct thread *thread )
|
|
{
|
|
assert( process->running_threads > 0 );
|
|
assert( !list_empty( &process->thread_list ));
|
|
|
|
list_remove( &thread->proc_entry );
|
|
|
|
if (!--process->running_threads)
|
|
{
|
|
/* we have removed the last running thread, exit the process */
|
|
process->exit_code = thread->exit_code;
|
|
generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
|
|
process_killed( process );
|
|
}
|
|
else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
|
|
release_object( thread );
|
|
}
|
|
|
|
/* suspend all the threads of a process */
|
|
void suspend_process( struct process *process )
|
|
{
|
|
if (!process->suspend++)
|
|
{
|
|
struct list *ptr, *next;
|
|
|
|
LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
|
|
{
|
|
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
|
|
if (!thread->suspend) stop_thread( thread );
|
|
}
|
|
}
|
|
}
|
|
|
|
/* resume all the threads of a process */
|
|
void resume_process( struct process *process )
|
|
{
|
|
assert (process->suspend > 0);
|
|
if (!--process->suspend)
|
|
{
|
|
struct list *ptr, *next;
|
|
|
|
LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
|
|
{
|
|
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
|
|
if (!thread->suspend) wake_thread( thread );
|
|
}
|
|
}
|
|
}
|
|
|
|
/* kill a process on the spot */
|
|
void kill_process( struct process *process, int violent_death )
|
|
{
|
|
if (!violent_death && process->msg_fd) /* normal termination on pipe close */
|
|
{
|
|
release_object( process->msg_fd );
|
|
process->msg_fd = NULL;
|
|
}
|
|
|
|
if (process->sigkill_timeout) /* already waiting for it to die */
|
|
{
|
|
remove_timeout_user( process->sigkill_timeout );
|
|
process->sigkill_timeout = NULL;
|
|
process_died( process );
|
|
return;
|
|
}
|
|
|
|
if (violent_death) terminate_process( process, NULL, 1 );
|
|
else
|
|
{
|
|
struct list *ptr;
|
|
|
|
grab_object( process ); /* make sure it doesn't get freed when threads die */
|
|
while ((ptr = list_head( &process->thread_list )))
|
|
{
|
|
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
|
|
kill_thread( thread, 0 );
|
|
}
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* kill all processes being debugged by a given thread */
|
|
void kill_debugged_processes( struct thread *debugger, int exit_code )
|
|
{
|
|
for (;;) /* restart from the beginning of the list every time */
|
|
{
|
|
struct process *process;
|
|
|
|
/* find the first process being debugged by 'debugger' and still running */
|
|
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
|
|
{
|
|
if (!process->running_threads) continue;
|
|
if (process->debugger == debugger) break;
|
|
}
|
|
if (&process->entry == &process_list) break; /* no process found */
|
|
process->debugger = NULL;
|
|
terminate_process( process, NULL, exit_code );
|
|
}
|
|
}
|
|
|
|
|
|
/* trigger a breakpoint event in a given process */
|
|
void break_process( struct process *process )
|
|
{
|
|
struct thread *thread;
|
|
|
|
suspend_process( process );
|
|
|
|
LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
|
|
{
|
|
if (thread->context) /* inside an exception event already */
|
|
{
|
|
break_thread( thread );
|
|
goto done;
|
|
}
|
|
}
|
|
if ((thread = get_process_first_thread( process ))) thread->debug_break = 1;
|
|
else set_error( STATUS_ACCESS_DENIED );
|
|
done:
|
|
resume_process( process );
|
|
}
|
|
|
|
|
|
/* detach a debugger from all its debuggees */
|
|
void detach_debugged_processes( struct thread *debugger )
|
|
{
|
|
struct process *process;
|
|
|
|
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
|
|
{
|
|
if (process->debugger == debugger && process->running_threads)
|
|
{
|
|
debugger_detach( process, debugger );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void enum_processes( int (*cb)(struct process*, void*), void *user )
|
|
{
|
|
struct list *ptr, *next;
|
|
|
|
LIST_FOR_EACH_SAFE( ptr, next, &process_list )
|
|
{
|
|
struct process *process = LIST_ENTRY( ptr, struct process, entry );
|
|
if ((cb)(process, user)) break;
|
|
}
|
|
}
|
|
|
|
/* set the debugged flag in the process PEB */
|
|
int set_process_debug_flag( struct process *process, int flag )
|
|
{
|
|
char data = (flag != 0);
|
|
|
|
/* BeingDebugged flag is the byte at offset 2 in the PEB */
|
|
return write_process_memory( process, process->peb + 2, 1, &data );
|
|
}
|
|
|
|
/* take a snapshot of currently running processes */
|
|
struct process_snapshot *process_snap( int *count )
|
|
{
|
|
struct process_snapshot *snapshot, *ptr;
|
|
struct process *process;
|
|
|
|
if (!running_processes) return NULL;
|
|
if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
|
|
return NULL;
|
|
ptr = snapshot;
|
|
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
|
|
{
|
|
if (!process->running_threads) continue;
|
|
ptr->process = process;
|
|
ptr->threads = process->running_threads;
|
|
ptr->count = process->obj.refcount;
|
|
ptr->priority = process->priority;
|
|
ptr->handles = get_handle_table_count(process);
|
|
grab_object( process );
|
|
ptr++;
|
|
}
|
|
|
|
if (!(*count = ptr - snapshot))
|
|
{
|
|
free( snapshot );
|
|
snapshot = NULL;
|
|
}
|
|
return snapshot;
|
|
}
|
|
|
|
/* create a new process */
|
|
DECL_HANDLER(new_process)
|
|
{
|
|
struct startup_info *info;
|
|
struct thread *thread;
|
|
struct process *process;
|
|
struct process *parent = current->process;
|
|
int socket_fd = thread_get_inflight_fd( current, req->socket_fd );
|
|
|
|
if (socket_fd == -1)
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return;
|
|
}
|
|
if (fcntl( socket_fd, F_SETFL, O_NONBLOCK ) == -1)
|
|
{
|
|
set_error( STATUS_INVALID_HANDLE );
|
|
close( socket_fd );
|
|
return;
|
|
}
|
|
if (shutdown_stage)
|
|
{
|
|
set_error( STATUS_SHUTDOWN_IN_PROGRESS );
|
|
close( socket_fd );
|
|
return;
|
|
}
|
|
|
|
if (!req->info_size) /* create an orphaned process */
|
|
{
|
|
create_process( socket_fd, NULL, 0 );
|
|
return;
|
|
}
|
|
|
|
/* build the startup info for a new process */
|
|
if (!(info = alloc_object( &startup_info_ops ))) return;
|
|
info->exe_file = NULL;
|
|
info->process = NULL;
|
|
info->data = NULL;
|
|
|
|
if (req->exe_file &&
|
|
!(info->exe_file = get_file_obj( current->process, req->exe_file, FILE_READ_DATA )))
|
|
goto done;
|
|
|
|
info->data_size = get_req_data_size();
|
|
info->info_size = min( req->info_size, info->data_size );
|
|
|
|
if (req->info_size < sizeof(*info->data))
|
|
{
|
|
/* make sure we have a full startup_info_t structure */
|
|
data_size_t env_size = info->data_size - info->info_size;
|
|
data_size_t info_size = min( req->info_size, FIELD_OFFSET( startup_info_t, curdir_len ));
|
|
|
|
if (!(info->data = mem_alloc( sizeof(*info->data) + env_size ))) goto done;
|
|
memcpy( info->data, get_req_data(), info_size );
|
|
memset( (char *)info->data + info_size, 0, sizeof(*info->data) - info_size );
|
|
memcpy( info->data + 1, (const char *)get_req_data() + req->info_size, env_size );
|
|
info->info_size = sizeof(startup_info_t);
|
|
info->data_size = info->info_size + env_size;
|
|
}
|
|
else
|
|
{
|
|
data_size_t pos = sizeof(*info->data);
|
|
|
|
if (!(info->data = memdup( get_req_data(), info->data_size ))) goto done;
|
|
#define FIXUP_LEN(len) do { (len) = min( (len), info->info_size - pos ); pos += (len); } while(0)
|
|
FIXUP_LEN( info->data->curdir_len );
|
|
FIXUP_LEN( info->data->dllpath_len );
|
|
FIXUP_LEN( info->data->imagepath_len );
|
|
FIXUP_LEN( info->data->cmdline_len );
|
|
FIXUP_LEN( info->data->title_len );
|
|
FIXUP_LEN( info->data->desktop_len );
|
|
FIXUP_LEN( info->data->shellinfo_len );
|
|
FIXUP_LEN( info->data->runtime_len );
|
|
#undef FIXUP_LEN
|
|
}
|
|
|
|
if (!(thread = create_process( socket_fd, current, req->inherit_all ))) goto done;
|
|
process = thread->process;
|
|
process->debug_children = !(req->create_flags & DEBUG_ONLY_THIS_PROCESS);
|
|
process->startup_info = (struct startup_info *)grab_object( info );
|
|
|
|
/* connect to the window station */
|
|
connect_process_winstation( process, current );
|
|
|
|
/* thread will be actually suspended in init_done */
|
|
if (req->create_flags & CREATE_SUSPENDED) thread->suspend++;
|
|
|
|
/* set the process console */
|
|
if (!(req->create_flags & (DETACHED_PROCESS | CREATE_NEW_CONSOLE)))
|
|
{
|
|
/* FIXME: some better error checking should be done...
|
|
* like if hConOut and hConIn are console handles, then they should be on the same
|
|
* physical console
|
|
*/
|
|
inherit_console( current, process, req->inherit_all ? info->data->hstdin : 0 );
|
|
}
|
|
|
|
if (!req->inherit_all && !(req->create_flags & CREATE_NEW_CONSOLE))
|
|
{
|
|
info->data->hstdin = duplicate_handle( parent, info->data->hstdin, process,
|
|
0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
|
|
info->data->hstdout = duplicate_handle( parent, info->data->hstdout, process,
|
|
0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
|
|
info->data->hstderr = duplicate_handle( parent, info->data->hstderr, process,
|
|
0, OBJ_INHERIT, DUPLICATE_SAME_ACCESS );
|
|
/* some handles above may have been invalid; this is not an error */
|
|
if (get_error() == STATUS_INVALID_HANDLE ||
|
|
get_error() == STATUS_OBJECT_TYPE_MISMATCH) clear_error();
|
|
}
|
|
|
|
/* attach to the debugger if requested */
|
|
if (req->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
|
|
set_process_debugger( process, current );
|
|
else if (parent->debugger && parent->debug_children)
|
|
set_process_debugger( process, parent->debugger );
|
|
|
|
if (!(req->create_flags & CREATE_NEW_PROCESS_GROUP))
|
|
process->group_id = parent->group_id;
|
|
|
|
info->process = (struct process *)grab_object( process );
|
|
reply->info = alloc_handle( current->process, info, SYNCHRONIZE, 0 );
|
|
reply->pid = get_process_id( process );
|
|
reply->tid = get_thread_id( thread );
|
|
reply->phandle = alloc_handle( parent, process, req->process_access, req->process_attr );
|
|
reply->thandle = alloc_handle( parent, thread, req->thread_access, req->thread_attr );
|
|
|
|
done:
|
|
release_object( info );
|
|
}
|
|
|
|
/* Retrieve information about a newly started process */
|
|
DECL_HANDLER(get_new_process_info)
|
|
{
|
|
struct startup_info *info;
|
|
|
|
if ((info = (struct startup_info *)get_handle_obj( current->process, req->info,
|
|
0, &startup_info_ops )))
|
|
{
|
|
reply->success = is_process_init_done( info->process );
|
|
reply->exit_code = info->process->exit_code;
|
|
release_object( info );
|
|
}
|
|
}
|
|
|
|
/* Retrieve the new process startup info */
|
|
DECL_HANDLER(get_startup_info)
|
|
{
|
|
struct process *process = current->process;
|
|
struct startup_info *info = process->startup_info;
|
|
data_size_t size;
|
|
|
|
if (!info) return;
|
|
|
|
if (info->exe_file &&
|
|
!(reply->exe_file = alloc_handle( process, info->exe_file, GENERIC_READ, 0 ))) return;
|
|
|
|
/* we return the data directly without making a copy so this can only be called once */
|
|
reply->info_size = info->info_size;
|
|
size = info->data_size;
|
|
if (size > get_reply_max_size()) size = get_reply_max_size();
|
|
set_reply_data_ptr( info->data, size );
|
|
info->data = NULL;
|
|
info->data_size = 0;
|
|
}
|
|
|
|
/* signal the end of the process initialization */
|
|
DECL_HANDLER(init_process_done)
|
|
{
|
|
struct process_dll *dll;
|
|
struct process *process = current->process;
|
|
|
|
if (is_process_init_done(process))
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return;
|
|
}
|
|
if (!(dll = find_process_dll( process, req->module )))
|
|
{
|
|
set_error( STATUS_DLL_NOT_FOUND );
|
|
return;
|
|
}
|
|
|
|
/* main exe is the first in the dll list */
|
|
list_remove( &dll->entry );
|
|
list_add_head( &process->dlls, &dll->entry );
|
|
|
|
process->ldt_copy = req->ldt_copy;
|
|
|
|
generate_startup_debug_events( process, req->entry );
|
|
set_process_startup_state( process, STARTUP_DONE );
|
|
|
|
if (req->gui) process->idle_event = create_event( NULL, NULL, 0, 1, 0, NULL );
|
|
stop_thread_if_suspended( current );
|
|
if (process->debugger) set_process_debug_flag( process, 1 );
|
|
}
|
|
|
|
/* open a handle to a process */
|
|
DECL_HANDLER(open_process)
|
|
{
|
|
struct process *process = get_process_from_id( req->pid );
|
|
reply->handle = 0;
|
|
if (process)
|
|
{
|
|
reply->handle = alloc_handle( current->process, process, req->access, req->attributes );
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* terminate a process */
|
|
DECL_HANDLER(terminate_process)
|
|
{
|
|
struct process *process;
|
|
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
|
|
{
|
|
reply->self = (current->process == process);
|
|
terminate_process( process, current, req->exit_code );
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* fetch information about a process */
|
|
DECL_HANDLER(get_process_info)
|
|
{
|
|
struct process *process;
|
|
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
|
|
{
|
|
reply->pid = get_process_id( process );
|
|
reply->ppid = process->parent ? get_process_id( process->parent ) : 0;
|
|
reply->exit_code = process->exit_code;
|
|
reply->priority = process->priority;
|
|
reply->affinity = process->affinity;
|
|
reply->peb = process->peb;
|
|
reply->start_time = process->start_time;
|
|
reply->end_time = process->end_time;
|
|
reply->cpu = process->cpu;
|
|
reply->debugger_present = !!process->debugger;
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
static void set_process_affinity( struct process *process, affinity_t affinity )
|
|
{
|
|
struct thread *thread;
|
|
|
|
process->affinity = affinity;
|
|
|
|
LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
|
|
{
|
|
set_thread_affinity( thread, affinity );
|
|
}
|
|
}
|
|
|
|
/* set information about a process */
|
|
DECL_HANDLER(set_process_info)
|
|
{
|
|
struct process *process;
|
|
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
|
|
{
|
|
if (req->mask & SET_PROCESS_INFO_PRIORITY) process->priority = req->priority;
|
|
if (req->mask & SET_PROCESS_INFO_AFFINITY) set_process_affinity( process, req->affinity );
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* read data from a process address space */
|
|
DECL_HANDLER(read_process_memory)
|
|
{
|
|
struct process *process;
|
|
data_size_t len = get_reply_max_size();
|
|
|
|
if (!(process = get_process_from_handle( req->handle, PROCESS_VM_READ ))) return;
|
|
|
|
if (len)
|
|
{
|
|
char *buffer = mem_alloc( len );
|
|
if (buffer)
|
|
{
|
|
if (read_process_memory( process, req->addr, len, buffer ))
|
|
set_reply_data_ptr( buffer, len );
|
|
else
|
|
free( buffer );
|
|
}
|
|
}
|
|
release_object( process );
|
|
}
|
|
|
|
/* write data to a process address space */
|
|
DECL_HANDLER(write_process_memory)
|
|
{
|
|
struct process *process;
|
|
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_VM_WRITE )))
|
|
{
|
|
data_size_t len = get_req_data_size();
|
|
if (len) write_process_memory( process, req->addr, len, get_req_data() );
|
|
else set_error( STATUS_INVALID_PARAMETER );
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* notify the server that a dll has been loaded */
|
|
DECL_HANDLER(load_dll)
|
|
{
|
|
struct process_dll *dll;
|
|
struct mapping *mapping = NULL;
|
|
|
|
if (req->mapping && !(mapping = get_mapping_obj( current->process, req->mapping, SECTION_QUERY )))
|
|
return;
|
|
|
|
if ((dll = process_load_dll( current->process, mapping, req->base,
|
|
get_req_data(), get_req_data_size() )))
|
|
{
|
|
dll->size = req->size;
|
|
dll->dbg_offset = req->dbg_offset;
|
|
dll->dbg_size = req->dbg_size;
|
|
dll->name = req->name;
|
|
/* only generate event if initialization is done */
|
|
if (is_process_init_done( current->process ))
|
|
generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
|
|
}
|
|
if (mapping) release_object( mapping );
|
|
}
|
|
|
|
/* notify the server that a dll is being unloaded */
|
|
DECL_HANDLER(unload_dll)
|
|
{
|
|
process_unload_dll( current->process, req->base );
|
|
}
|
|
|
|
/* retrieve information about a module in a process */
|
|
DECL_HANDLER(get_dll_info)
|
|
{
|
|
struct process *process;
|
|
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
|
|
{
|
|
struct process_dll *dll;
|
|
|
|
if (req->base_address)
|
|
dll = find_process_dll( process, req->base_address );
|
|
else /* NULL means main module */
|
|
dll = list_head( &process->dlls ) ?
|
|
LIST_ENTRY(list_head( &process->dlls ), struct process_dll, entry) : NULL;
|
|
|
|
if (dll)
|
|
{
|
|
reply->size = dll->size;
|
|
reply->entry_point = 0; /* FIXME */
|
|
reply->filename_len = dll->namelen;
|
|
if (dll->filename)
|
|
{
|
|
if (dll->namelen <= get_reply_max_size())
|
|
set_reply_data( dll->filename, dll->namelen );
|
|
else
|
|
set_error( STATUS_BUFFER_TOO_SMALL );
|
|
}
|
|
}
|
|
else
|
|
set_error( STATUS_DLL_NOT_FOUND );
|
|
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* retrieve the process idle event */
|
|
DECL_HANDLER(get_process_idle_event)
|
|
{
|
|
struct process *process;
|
|
|
|
reply->event = 0;
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
|
|
{
|
|
if (process->idle_event && process != current->process)
|
|
reply->event = alloc_handle( current->process, process->idle_event,
|
|
EVENT_ALL_ACCESS, 0 );
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* make the current process a system process */
|
|
DECL_HANDLER(make_process_system)
|
|
{
|
|
struct process *process = current->process;
|
|
|
|
if (!shutdown_event)
|
|
{
|
|
if (!(shutdown_event = create_event( NULL, NULL, 0, 1, 0, NULL ))) return;
|
|
make_object_static( (struct object *)shutdown_event );
|
|
}
|
|
|
|
if (!(reply->event = alloc_handle( current->process, shutdown_event, SYNCHRONIZE, 0 )))
|
|
return;
|
|
|
|
if (!process->is_system)
|
|
{
|
|
process->is_system = 1;
|
|
close_process_desktop( process );
|
|
if (!--user_processes && !shutdown_stage && master_socket_timeout != TIMEOUT_INFINITE)
|
|
shutdown_timeout = add_timeout_user( master_socket_timeout, server_shutdown_timeout, NULL );
|
|
}
|
|
}
|