1215 lines
39 KiB
C
1215 lines
39 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 "windef.h"
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#include "winbase.h"
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#include "winnt.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 "console.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;
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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 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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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_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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no_flush, /* flush */
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no_get_file_info, /* get_file_info */
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no_queue_async, /* queue_async */
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no_cancel_async /* 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 list entry; /* entry in list of startup infos */
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int inherit_all; /* inherit all handles from parent */
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int create_flags; /* creation flags */
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int unix_pid; /* Unix pid of new process */
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obj_handle_t hstdin; /* handle for stdin */
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obj_handle_t hstdout; /* handle for stdout */
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obj_handle_t hstderr; /* handle for stderr */
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struct file *exe_file; /* file handle for main exe */
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struct thread *owner; /* owner thread (the one that created the new process) */
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struct process *process; /* created process */
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struct thread *thread; /* created thread */
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size_t data_size; /* size of startup data */
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void *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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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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startup_info_destroy /* destroy */
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};
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static struct list startup_info_list = LIST_INIT(startup_info_list);
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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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#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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/* set the console and stdio handles for a newly created process */
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static int set_process_console( struct process *process, struct thread *parent_thread,
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struct startup_info *info, struct init_process_reply *reply )
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{
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if (info)
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{
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if (!(process->create_flags & (DETACHED_PROCESS | CREATE_NEW_CONSOLE)))
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{
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/* FIXME: some better error checking should be done...
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* like if hConOut and hConIn are console handles, then they should be on the same
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* physical console
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*/
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inherit_console( parent_thread, process, info->inherit_all ? info->hstdin : 0 );
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}
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if (!info->inherit_all && !(process->create_flags & CREATE_NEW_CONSOLE))
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{
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reply->hstdin = duplicate_handle( parent_thread->process, info->hstdin, process,
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0, TRUE, DUPLICATE_SAME_ACCESS );
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reply->hstdout = duplicate_handle( parent_thread->process, info->hstdout, process,
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0, TRUE, DUPLICATE_SAME_ACCESS );
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reply->hstderr = duplicate_handle( parent_thread->process, info->hstderr, process,
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0, TRUE, DUPLICATE_SAME_ACCESS );
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}
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else
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{
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reply->hstdin = info->hstdin;
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reply->hstdout = info->hstdout;
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reply->hstderr = info->hstderr;
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}
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}
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else reply->hstdin = reply->hstdout = reply->hstderr = 0;
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/* some handles above may have been invalid; this is not an error */
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if (get_error() == STATUS_INVALID_HANDLE ||
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get_error() == STATUS_OBJECT_TYPE_MISMATCH) clear_error();
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return 1;
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}
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/* create a new process and its main thread */
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struct thread *create_process( int fd )
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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 ))) goto error;
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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->exit_code = STILL_ACTIVE;
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process->running_threads = 0;
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process->priority = NORMAL_PRIORITY_CLASS;
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process->affinity = 1;
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process->suspend = 0;
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process->create_flags = 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->queue = NULL;
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process->atom_table = NULL;
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process->peb = NULL;
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process->ldt_copy = NULL;
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process->exe.file = NULL;
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process->exe.dbg_offset = 0;
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process->exe.dbg_size = 0;
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process->exe.namelen = 0;
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process->exe.filename = NULL;
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process->group_id = 0;
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process->token = token_create_admin();
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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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gettimeofday( &process->start_time, NULL );
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list_add_head( &process_list, &process->entry );
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if (!(process->id = alloc_ptid( process ))) goto error;
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if (!(process->msg_fd = create_anonymous_fd( &process_fd_ops, fd, &process->obj ))) 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], 0 ) == -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();
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return NULL;
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}
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/* find the startup info for a given Unix process */
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inline static struct startup_info *find_startup_info( int unix_pid )
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{
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struct list *ptr;
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LIST_FOR_EACH( ptr, &startup_info_list )
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{
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struct startup_info *info = LIST_ENTRY( ptr, struct startup_info, entry );
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if (info->unix_pid == unix_pid) return info;
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}
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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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static struct startup_info *init_process( struct init_process_reply *reply )
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{
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struct process *process = current->process;
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struct thread *parent_thread = NULL;
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struct process *parent = NULL;
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struct startup_info *info = find_startup_info( current->unix_pid );
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if (info)
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{
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if (info->thread)
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{
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fatal_protocol_error( current, "init_process: called twice?\n" );
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return NULL;
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}
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parent_thread = info->owner;
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parent = parent_thread->process;
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process->parent = (struct process *)grab_object( parent );
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}
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/* set the process flags */
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process->create_flags = info ? info->create_flags : 0;
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/* create the handle table */
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if (info && info->inherit_all)
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process->handles = copy_handle_table( process, parent );
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else
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process->handles = alloc_handle_table( process, 0 );
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if (!process->handles) return NULL;
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/* retrieve the main exe file */
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reply->exe_file = 0;
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if (info && info->exe_file)
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{
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process->exe.file = (struct file *)grab_object( info->exe_file );
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if (!(reply->exe_file = alloc_handle( process, process->exe.file, GENERIC_READ, 0 )))
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return NULL;
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}
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/* set the process console */
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if (!set_process_console( process, parent_thread, info, reply )) return NULL;
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process->group_id = get_process_id( process );
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if (parent)
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{
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/* attach to the debugger if requested */
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if (process->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
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set_process_debugger( process, parent_thread );
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else if (parent->debugger && !(parent->create_flags & DEBUG_ONLY_THIS_PROCESS))
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set_process_debugger( process, parent->debugger );
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if (!(process->create_flags & CREATE_NEW_PROCESS_GROUP))
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process->group_id = parent->group_id;
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}
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/* thread will be actually suspended in init_done */
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if (process->create_flags & CREATE_SUSPENDED) current->suspend++;
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if (info)
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{
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reply->info_size = info->data_size;
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info->process = (struct process *)grab_object( process );
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info->thread = (struct thread *)grab_object( current );
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}
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reply->create_flags = process->create_flags;
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reply->server_start = server_start_ticks;
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return info ? (struct startup_info *)grab_object( info ) : NULL;
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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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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->queue) release_object( process->queue );
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if (process->atom_table) release_object( process->atom_table );
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if (process->exe.file) release_object( process->exe.file );
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if (process->exe.filename) free( process->exe.filename );
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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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|
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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)) set_fd_events( fd, -1 );
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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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list_remove( &info->entry );
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if (info->data) 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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if (info->thread) release_object( info->thread );
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if (info->owner) release_object( info->owner );
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}
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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 flags=%x in=%p out=%p err=%p\n",
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info->create_flags, info->hstdin, info->hstdout, info->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 && is_process_init_done(info->process);
|
|
}
|
|
|
|
/* get a process from an id (and increment the refcount) */
|
|
struct process *get_process_from_id( process_id_t id )
|
|
{
|
|
struct object *obj = get_ptid_entry( id );
|
|
|
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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;
|
|
}
|
|
|
|
/* 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, void *base )
|
|
{
|
|
struct process_dll *dll;
|
|
|
|
if (process->exe.base == base) return &process->exe;
|
|
|
|
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 file *file,
|
|
void *base, const WCHAR *filename, 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->file = 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 (file) dll->file = (struct file *)grab_object( file );
|
|
list_add_head( &process->dlls, &dll->entry );
|
|
}
|
|
return dll;
|
|
}
|
|
|
|
/* remove a dll from a process list */
|
|
static void process_unload_dll( struct process *process, void *base )
|
|
{
|
|
struct process_dll *dll = find_process_dll( process, base );
|
|
|
|
if (dll && dll != &process->exe)
|
|
{
|
|
if (dll->file) release_object( dll->file );
|
|
if (dll->filename) free( dll->filename );
|
|
list_remove( &dll->entry );
|
|
free( dll );
|
|
generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, base );
|
|
}
|
|
else set_error( STATUS_INVALID_PARAMETER );
|
|
}
|
|
|
|
/* kill all processes */
|
|
void kill_all_processes( struct process *skip, int exit_code )
|
|
{
|
|
for (;;)
|
|
{
|
|
struct process *process;
|
|
|
|
LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry )
|
|
{
|
|
if (process == skip) continue;
|
|
if (process->running_threads) break;
|
|
}
|
|
if (&process->entry == &process_list) break; /* no process found */
|
|
kill_process( process, NULL, exit_code );
|
|
}
|
|
}
|
|
|
|
/* 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 && process->console->renderer == renderer) break;
|
|
}
|
|
if (&process->entry == &process_list) break; /* no process found */
|
|
kill_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 ));
|
|
gettimeofday( &process->end_time, NULL );
|
|
if (process->handles) release_object( process->handles );
|
|
process->handles = 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->file) release_object( dll->file );
|
|
if (dll->filename) free( dll->filename );
|
|
list_remove( &dll->entry );
|
|
free( dll );
|
|
}
|
|
destroy_process_classes( process );
|
|
set_process_startup_state( process, STARTUP_ABORTED );
|
|
if (process->exe.file) release_object( process->exe.file );
|
|
process->exe.file = NULL;
|
|
wake_up( &process->obj, 0 );
|
|
if (!--running_processes) close_master_socket();
|
|
}
|
|
|
|
/* add a thread to a process running threads list */
|
|
void add_process_thread( struct process *process, struct thread *thread )
|
|
{
|
|
list_add_head( &process->thread_list, &thread->proc_entry );
|
|
if (!process->running_threads++) running_processes++;
|
|
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, struct thread *skip, int exit_code )
|
|
{
|
|
struct list *ptr, *next;
|
|
|
|
LIST_FOR_EACH_SAFE( ptr, next, &process->thread_list )
|
|
{
|
|
struct thread *thread = LIST_ENTRY( ptr, struct thread, proc_entry );
|
|
|
|
thread->exit_code = exit_code;
|
|
if (thread != skip) kill_thread( thread, 1 );
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
kill_process( process, NULL, exit_code );
|
|
}
|
|
}
|
|
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
|
|
/* read data from a process memory space */
|
|
/* len is the total size (in ints) */
|
|
static int read_process_memory( struct process *process, const int *addr, size_t len, int *dest )
|
|
{
|
|
struct thread *thread = get_process_first_thread( process );
|
|
|
|
assert( !((unsigned int)addr % sizeof(int)) ); /* address must be aligned */
|
|
|
|
if (!thread) /* process is dead */
|
|
{
|
|
set_error( STATUS_ACCESS_DENIED );
|
|
return 0;
|
|
}
|
|
if (suspend_for_ptrace( thread ))
|
|
{
|
|
while (len > 0)
|
|
{
|
|
if (read_thread_int( thread, addr++, dest++ ) == -1) break;
|
|
len--;
|
|
}
|
|
resume_after_ptrace( thread );
|
|
}
|
|
return !len;
|
|
}
|
|
|
|
/* make sure we can write to the whole address range */
|
|
/* len is the total size (in ints) */
|
|
static int check_process_write_access( struct thread *thread, int *addr, size_t len )
|
|
{
|
|
int page = get_page_size() / sizeof(int);
|
|
|
|
for (;;)
|
|
{
|
|
if (write_thread_int( thread, addr, 0, 0 ) == -1) return 0;
|
|
if (len <= page) break;
|
|
addr += page;
|
|
len -= page;
|
|
}
|
|
return (write_thread_int( thread, addr + len - 1, 0, 0 ) != -1);
|
|
}
|
|
|
|
/* write data to a process memory space */
|
|
/* len is the total size (in ints), max is the size we can actually read from the input buffer */
|
|
/* we check the total size for write permissions */
|
|
static int write_process_memory( struct process *process, int *addr, size_t len,
|
|
unsigned int first_mask, unsigned int last_mask, const int *src )
|
|
{
|
|
struct thread *thread = get_process_first_thread( process );
|
|
int ret = 0;
|
|
|
|
assert( !((unsigned int)addr % sizeof(int) )); /* address must be aligned */
|
|
|
|
if (!thread) /* process is dead */
|
|
{
|
|
set_error( STATUS_ACCESS_DENIED );
|
|
return 0;
|
|
}
|
|
if (suspend_for_ptrace( thread ))
|
|
{
|
|
if (!check_process_write_access( thread, addr, len ))
|
|
{
|
|
set_error( STATUS_ACCESS_DENIED );
|
|
goto done;
|
|
}
|
|
/* first word is special */
|
|
if (len > 1)
|
|
{
|
|
if (write_thread_int( thread, addr++, *src++, first_mask ) == -1) goto done;
|
|
len--;
|
|
}
|
|
else last_mask &= first_mask;
|
|
|
|
while (len > 1)
|
|
{
|
|
if (write_thread_int( thread, addr++, *src++, ~0 ) == -1) goto done;
|
|
len--;
|
|
}
|
|
|
|
/* last word is special too */
|
|
if (write_thread_int( thread, addr, *src, last_mask ) == -1) goto done;
|
|
ret = 1;
|
|
|
|
done:
|
|
resume_after_ptrace( thread );
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* set the debugged flag in the process PEB */
|
|
int set_process_debug_flag( struct process *process, int flag )
|
|
{
|
|
int mask = 0, data = 0;
|
|
|
|
/* BeingDebugged flag is the byte at offset 2 in the PEB */
|
|
memset( (char *)&mask + 2, 0xff, 1 );
|
|
memset( (char *)&data + 2, flag, 1 );
|
|
return write_process_memory( process, process->peb, 1, mask, mask, &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++;
|
|
}
|
|
*count = running_processes;
|
|
return snapshot;
|
|
}
|
|
|
|
/* take a snapshot of the modules of a process */
|
|
struct module_snapshot *module_snap( struct process *process, int *count )
|
|
{
|
|
struct module_snapshot *snapshot, *ptr;
|
|
struct process_dll *dll;
|
|
int total = 1;
|
|
|
|
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry ) total++;
|
|
if (!(snapshot = mem_alloc( sizeof(*snapshot) * total ))) return NULL;
|
|
|
|
/* first entry is main exe */
|
|
snapshot->base = process->exe.base;
|
|
snapshot->size = process->exe.size;
|
|
snapshot->namelen = process->exe.namelen;
|
|
snapshot->filename = memdup( process->exe.filename, process->exe.namelen );
|
|
ptr = snapshot + 1;
|
|
|
|
LIST_FOR_EACH_ENTRY( dll, &process->dlls, struct process_dll, entry )
|
|
{
|
|
ptr->base = dll->base;
|
|
ptr->size = dll->size;
|
|
ptr->namelen = dll->namelen;
|
|
ptr->filename = memdup( dll->filename, dll->namelen );
|
|
ptr++;
|
|
}
|
|
*count = total;
|
|
return snapshot;
|
|
}
|
|
|
|
|
|
/* create a new process */
|
|
DECL_HANDLER(new_process)
|
|
{
|
|
struct startup_info *info;
|
|
|
|
/* build the startup info for a new process */
|
|
if (!(info = alloc_object( &startup_info_ops ))) return;
|
|
list_add_head( &startup_info_list, &info->entry );
|
|
info->inherit_all = req->inherit_all;
|
|
info->create_flags = req->create_flags;
|
|
info->unix_pid = req->unix_pid;
|
|
info->hstdin = req->hstdin;
|
|
info->hstdout = req->hstdout;
|
|
info->hstderr = req->hstderr;
|
|
info->exe_file = NULL;
|
|
info->owner = (struct thread *)grab_object( current );
|
|
info->process = NULL;
|
|
info->thread = NULL;
|
|
info->data_size = get_req_data_size();
|
|
info->data = NULL;
|
|
|
|
if (req->exe_file &&
|
|
!(info->exe_file = get_file_obj( current->process, req->exe_file, GENERIC_READ )))
|
|
goto done;
|
|
|
|
if (!(info->data = memdup( get_req_data(), info->data_size ))) goto done;
|
|
reply->info = alloc_handle( current->process, info, SYNCHRONIZE, FALSE );
|
|
|
|
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->pid = get_process_id( info->process );
|
|
reply->tid = get_thread_id( info->thread );
|
|
reply->phandle = alloc_handle( current->process, info->process,
|
|
PROCESS_ALL_ACCESS, req->pinherit );
|
|
reply->thandle = alloc_handle( current->process, info->thread,
|
|
THREAD_ALL_ACCESS, req->tinherit );
|
|
reply->success = is_process_init_done( info->process );
|
|
release_object( info );
|
|
}
|
|
else
|
|
{
|
|
reply->pid = 0;
|
|
reply->tid = 0;
|
|
reply->phandle = 0;
|
|
reply->thandle = 0;
|
|
reply->success = 0;
|
|
}
|
|
}
|
|
|
|
/* Retrieve the new process startup info */
|
|
DECL_HANDLER(get_startup_info)
|
|
{
|
|
struct startup_info *info;
|
|
|
|
if ((info = current->process->startup_info))
|
|
{
|
|
size_t size = info->data_size;
|
|
if (size > get_reply_max_size()) size = get_reply_max_size();
|
|
|
|
/* we return the data directly without making a copy so this can only be called once */
|
|
set_reply_data_ptr( info->data, size );
|
|
info->data = NULL;
|
|
info->data_size = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/* initialize a new process */
|
|
DECL_HANDLER(init_process)
|
|
{
|
|
if (current->unix_pid == -1)
|
|
{
|
|
fatal_protocol_error( current, "init_process: init_thread not called yet\n" );
|
|
return;
|
|
}
|
|
if (current->process->startup_info)
|
|
{
|
|
fatal_protocol_error( current, "init_process: called twice\n" );
|
|
return;
|
|
}
|
|
if (!req->peb || (unsigned int)req->peb % sizeof(int))
|
|
{
|
|
fatal_protocol_error( current, "init_process: bad peb address\n" );
|
|
return;
|
|
}
|
|
if (!req->ldt_copy || (unsigned int)req->ldt_copy % sizeof(int))
|
|
{
|
|
fatal_protocol_error( current, "init_process: bad ldt_copy address\n" );
|
|
return;
|
|
}
|
|
reply->info_size = 0;
|
|
current->process->peb = req->peb;
|
|
current->process->ldt_copy = req->ldt_copy;
|
|
current->process->startup_info = init_process( reply );
|
|
}
|
|
|
|
/* signal the end of the process initialization */
|
|
DECL_HANDLER(init_process_done)
|
|
{
|
|
struct file *file = NULL;
|
|
struct process *process = current->process;
|
|
|
|
if (is_process_init_done(process))
|
|
{
|
|
fatal_protocol_error( current, "init_process_done: called twice\n" );
|
|
return;
|
|
}
|
|
if (!req->module)
|
|
{
|
|
fatal_protocol_error( current, "init_process_done: module base address cannot be 0\n" );
|
|
return;
|
|
}
|
|
process->exe.base = req->module;
|
|
process->exe.size = req->module_size;
|
|
process->exe.name = req->name;
|
|
|
|
if (req->exe_file) file = get_file_obj( process, req->exe_file, GENERIC_READ );
|
|
if (process->exe.file) release_object( process->exe.file );
|
|
process->exe.file = file;
|
|
|
|
if ((process->exe.namelen = get_req_data_size()))
|
|
process->exe.filename = memdup( get_req_data(), process->exe.namelen );
|
|
|
|
generate_startup_debug_events( process, req->entry );
|
|
set_process_startup_state( process, STARTUP_DONE );
|
|
|
|
if (req->gui) process->idle_event = create_event( NULL, 0, 1, 0 );
|
|
if (current->suspend + process->suspend > 0) stop_thread( 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->inherit );
|
|
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);
|
|
kill_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->process_affinity = process->affinity;
|
|
reply->system_affinity = 1;
|
|
reply->peb = process->peb;
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
if (req->affinity != 1) set_error( STATUS_INVALID_PARAMETER );
|
|
else process->affinity = req->affinity;
|
|
}
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* read data from a process address space */
|
|
DECL_HANDLER(read_process_memory)
|
|
{
|
|
struct process *process;
|
|
size_t len = get_reply_max_size();
|
|
|
|
if (!(process = get_process_from_handle( req->handle, PROCESS_VM_READ ))) return;
|
|
|
|
if (len)
|
|
{
|
|
unsigned int start_offset = (unsigned int)req->addr % sizeof(int);
|
|
unsigned int nb_ints = (len + start_offset + sizeof(int) - 1) / sizeof(int);
|
|
const int *start = (int *)((char *)req->addr - start_offset);
|
|
int *buffer = mem_alloc( nb_ints * sizeof(int) );
|
|
if (buffer)
|
|
{
|
|
if (read_process_memory( process, start, nb_ints, buffer ))
|
|
{
|
|
/* move start of requested data to start of buffer */
|
|
if (start_offset) memmove( buffer, (char *)buffer + start_offset, len );
|
|
set_reply_data_ptr( buffer, len );
|
|
}
|
|
else len = 0;
|
|
}
|
|
}
|
|
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 )))
|
|
{
|
|
size_t len = get_req_data_size();
|
|
if ((len % sizeof(int)) || ((unsigned int)req->addr % sizeof(int)))
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
else
|
|
{
|
|
if (len) write_process_memory( process, req->addr, len / sizeof(int),
|
|
req->first_mask, req->last_mask, get_req_data() );
|
|
}
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* notify the server that a dll has been loaded */
|
|
DECL_HANDLER(load_dll)
|
|
{
|
|
struct process_dll *dll;
|
|
struct file *file = NULL;
|
|
|
|
if (req->handle && !(file = get_file_obj( current->process, req->handle, GENERIC_READ )))
|
|
return;
|
|
|
|
if ((dll = process_load_dll( current->process, file, 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 (file) release_object( file );
|
|
}
|
|
|
|
/* 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 = find_process_dll( process, req->base_address );
|
|
|
|
if (dll)
|
|
{
|
|
reply->size = dll->size;
|
|
reply->entry_point = 0; /* FIXME */
|
|
if (dll->filename)
|
|
{
|
|
size_t len = min( dll->namelen, get_reply_max_size() );
|
|
set_reply_data( dll->filename, len );
|
|
}
|
|
}
|
|
else
|
|
set_error( STATUS_DLL_NOT_FOUND );
|
|
|
|
release_object( process );
|
|
}
|
|
}
|
|
|
|
/* wait for a process to start waiting on input */
|
|
/* FIXME: only returns event for now, wait is done in the client */
|
|
DECL_HANDLER(wait_input_idle)
|
|
{
|
|
struct process *process;
|
|
|
|
reply->event = 0;
|
|
if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
|
|
{
|
|
if (process->idle_event && process != current->process && process->queue != current->queue)
|
|
reply->event = alloc_handle( current->process, process->idle_event,
|
|
EVENT_ALL_ACCESS, 0 );
|
|
release_object( process );
|
|
}
|
|
}
|