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223 lines
5.4 KiB
C
223 lines
5.4 KiB
C
/*
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* Server-side /proc support for Solaris
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*
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* Copyright (C) 2007 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 <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <unistd.h>
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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 "process.h"
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#include "thread.h"
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#ifdef USE_PROCFS
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/* procfs doesn't support large files */
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# undef _FILE_OFFSET_BITS
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# define _FILE_OFFSET_BITS 32
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#include <procfs.h>
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static int open_proc_as( struct process *process, int flags )
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{
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char buffer[32];
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int fd;
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if (process->unix_pid == -1)
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{
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set_error( STATUS_ACCESS_DENIED );
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return -1;
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}
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sprintf( buffer, "/proc/%u/as", process->unix_pid );
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if ((fd = open( buffer, flags )) == -1)
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{
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if (errno == ENOENT) /* probably got killed */
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{
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process->unix_pid = -1;
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set_error( STATUS_ACCESS_DENIED );
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}
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else file_set_error();
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}
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return fd;
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}
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static int open_proc_lwpctl( struct thread *thread )
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{
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char buffer[48];
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int fd;
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if (thread->unix_pid == -1) return -1;
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sprintf( buffer, "/proc/%u/lwp/%u/lwpctl", thread->unix_pid, thread->unix_tid );
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if ((fd = open( buffer, O_WRONLY )) == -1)
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{
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if (errno == ENOENT) /* probably got killed */
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thread->unix_pid = thread->unix_tid = -1;
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else
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file_set_error();
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}
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return fd;
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}
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/* handle a SIGCHLD signal */
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void sigchld_callback(void)
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{
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assert( 0 ); /* should only be called when using ptrace */
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}
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/* initialize the process tracing mechanism */
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void init_tracing_mechanism(void)
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{
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/* no initialization needed */
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}
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/* initialize the per-process tracing mechanism */
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void init_process_tracing( struct process *process )
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{
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/* setup is done on-demand */
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}
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/* terminate the per-process tracing mechanism */
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void finish_process_tracing( struct process *process )
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{
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}
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/* send a Unix signal to a specific thread */
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int send_thread_signal( struct thread *thread, int sig )
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{
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int fd = open_proc_lwpctl( thread );
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long kill[2];
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ssize_t ret;
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if (fd == -1) return 0;
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kill[0] = PCKILL;
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kill[1] = sig;
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ret = write( fd, kill, sizeof(kill) );
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close( fd );
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return (ret == sizeof(kill));
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}
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/* read data from a process memory space */
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int read_process_memory( struct process *process, client_ptr_t ptr, size_t size, char *dest )
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{
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ssize_t ret;
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int fd;
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if ((off_t)ptr != ptr)
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{
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set_error( STATUS_ACCESS_DENIED );
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return 0;
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}
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if ((fd = open_proc_as( process, O_RDONLY )) == -1) return 0;
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ret = pread( fd, dest, size, (off_t)ptr );
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close( fd );
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if (ret == size) return 1;
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if (ret == -1) file_set_error();
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else set_error( STATUS_ACCESS_VIOLATION );
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return 0;
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}
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/* write data to a process memory space */
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int write_process_memory( struct process *process, client_ptr_t ptr, size_t size, const char *src )
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{
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ssize_t ret;
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int fd;
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if ((off_t)ptr != ptr)
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{
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set_error( STATUS_ACCESS_DENIED );
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return 0;
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}
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if ((fd = open_proc_as( process, O_WRONLY )) == -1) return 0;
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ret = pwrite( fd, src, size, (off_t)ptr );
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close( fd );
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if (ret == size) return 1;
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if (ret == -1) file_set_error();
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else set_error( STATUS_ACCESS_VIOLATION );
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return 0;
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}
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/* retrieve an LDT selector entry */
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void get_selector_entry( struct thread *thread, int entry, unsigned int *base,
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unsigned int *limit, unsigned char *flags )
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{
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ssize_t ret;
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off_t pos = thread->process->ldt_copy;
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int fd;
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if (!pos)
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{
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set_error( STATUS_ACCESS_DENIED );
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return;
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}
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if ((fd = open_proc_as( thread->process, O_RDONLY )) == -1) return;
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ret = pread( fd, base, sizeof(*base), pos + entry*sizeof(int) );
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if (ret != sizeof(*base)) goto error;
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ret = pread( fd, limit, sizeof(*limit), pos + (8192 + entry)*sizeof(int) );
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if (ret != sizeof(*limit)) goto error;
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ret = pread( fd, flags, sizeof(*flags), pos + 2*8192*sizeof(int) + entry );
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if (ret != sizeof(*flags)) goto error;
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close( fd );
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return;
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error:
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if (ret == -1) file_set_error();
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else set_error( STATUS_ACCESS_VIOLATION );
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close( fd );
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}
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/* initialize registers in new thread if necessary */
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void init_thread_context( struct thread *thread )
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{
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}
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/* retrieve the thread registers */
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void get_thread_context( struct thread *thread, context_t *context, unsigned int flags )
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{
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/* FIXME: get debug registers */
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}
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/* set the thread registers */
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void set_thread_context( struct thread *thread, const context_t *context, unsigned int flags )
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{
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/* FIXME: set debug registers */
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}
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#endif /* USE_PROCFS */
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