From 3bbe5328cd738976443822502e23fb3971c5f87b Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:48 -0800 Subject: auto import from //depot/cupcake/@135843 --- qemu/Android.mk | 3 - qemu/qemu.c | 312 -------------------------------------------------------- 2 files changed, 315 deletions(-) delete mode 100644 qemu/Android.mk delete mode 100644 qemu/qemu.c (limited to 'qemu') diff --git a/qemu/Android.mk b/qemu/Android.mk deleted file mode 100644 index 5171754..0000000 --- a/qemu/Android.mk +++ /dev/null @@ -1,3 +0,0 @@ -ifeq ($(QEMU_HARDWARE),true) -LOCAL_SRC_FILES += qemu/qemu.c -endif diff --git a/qemu/qemu.c b/qemu/qemu.c deleted file mode 100644 index 2631c58..0000000 --- a/qemu/qemu.c +++ /dev/null @@ -1,312 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* this file contains various functions used by all libhardware modules - * that support QEMU emulation - */ -#include "qemu.h" -#define LOG_TAG "hardware-qemu" -#include -#include -#include -#include -#include -#include -#include -#include - -#define QEMU_DEBUG 0 - -#if QEMU_DEBUG -# define D(...) LOGD(__VA_ARGS__) -#else -# define D(...) ((void)0) -#endif - - -int -qemu_check(void) -{ - static int in_qemu = -1; - - if (__builtin_expect(in_qemu < 0,0)) { - char propBuf[PROPERTY_VALUE_MAX]; - property_get("ro.kernel.qemu", propBuf, ""); - in_qemu = (propBuf[0] == '1'); - } - return in_qemu; -} - - -int -qemu_channel_open( QemuChannel* channel, - const char* name, - int mode ) -{ - int fd = -1; - - /* initialize the channel is needed */ - if (!channel->is_inited) - { - int done = 0; - - // try to connect to qemud socket first - do { - snprintf(channel->device, sizeof channel->device, - "qemud_%s", name); - - fd = socket_local_client( channel->device, - ANDROID_SOCKET_NAMESPACE_RESERVED, - SOCK_STREAM ); - if (fd < 0) { - D("no '%s' control socket available: %s", - channel->device, strerror(errno)); - break; - } - close(fd); - channel->is_qemud = 1; - done = 1; - } while (0); - - // otherwise, look for a kernel-provided device name - if (!done) do { - char key[PROPERTY_KEY_MAX]; - char prop[PROPERTY_VALUE_MAX]; - int ret; - - ret = snprintf(key, sizeof key, "ro.kernel.android.%s", name); - if (ret >= (int)sizeof key) - break; - - if (property_get(key, prop, "") == 0) { - D("no kernel-provided %s device name", name); - break; - } - - ret = snprintf(channel->device, sizeof channel->device, - "/dev/%s", prop); - if (ret >= (int)sizeof channel->device) { - D("%s device name too long: '%s'", name, prop); - break; - } - channel->is_tty = !memcmp("/dev/tty", channel->device, 8); - done = 1; - - } while (0); - - channel->is_available = done; - channel->is_inited = 1; - } - - /* try to open the file */ - if (!channel->is_available) { - fd = -1; - errno = ENOENT; - } else if (channel->is_qemud) { - do { - fd = socket_local_client( channel->device, - ANDROID_SOCKET_NAMESPACE_RESERVED, - SOCK_STREAM ); - } while (fd < 0 && errno == EINTR); - } else { - do { - fd = open(channel->device, mode); - } while (fd < 0 && errno == EINTR); - - /* disable ECHO on serial lines */ - if (fd >= 0 && channel->is_tty) { - struct termios ios; - tcgetattr( fd, &ios ); - ios.c_lflag = 0; /* disable ECHO, ICANON, etc... */ - tcsetattr( fd, TCSANOW, &ios ); - } - } - return fd; -} - - -static int -qemu_command_vformat( char* buffer, - int buffer_size, - const char* format, - va_list args ) -{ - char header[5]; - int len; - - if (buffer_size < 6) - return -1; - - len = vsnprintf(buffer+4, buffer_size-4, format, args); - if (len >= buffer_size-4) - return -1; - - snprintf(header, sizeof header, "%04x", len); - memcpy(buffer, header, 4); - return len + 4; -} - -extern int -qemu_command_format( char* buffer, - int buffer_size, - const char* format, - ... ) -{ - va_list args; - int ret; - - va_start(args, format); - ret = qemu_command_format(buffer, buffer_size, format, args); - va_end(args); - return ret; -} - - -static int -qemu_control_fd(void) -{ - static QemuChannel channel[1]; - int fd; - - fd = qemu_channel_open( channel, "control", O_RDWR ); - if (fd < 0) { - D("%s: could not open control channel: %s", __FUNCTION__, - strerror(errno)); - } - return fd; -} - -static int -qemu_control_write( int fd, const char* cmd, int len ) -{ - int len2; - do { - len2 = write(fd, cmd, len); - } while (len2 < 0 && errno == EINTR); - return len2; -} - -static int -qemu_control_read( int fd, char* buff, int len ) -{ - int len2; - do { - len2 = read(fd, buff, len); - } while (len2 < 0 && errno == EINTR); - return len2; -} - -static int -qemu_control_send(const char* cmd, int len) -{ - int fd, len2; - - if (len < 0) { - errno = EINVAL; - return -1; - } - - fd = qemu_control_fd(); - if (fd < 0) - return -1; - - len2 = qemu_control_write(fd, cmd, len); - close(fd); - if (len2 != len) { - D("%s: could not send everything %d < %d", - __FUNCTION__, len2, len); - return -1; - } - return 0; -} - - -int -qemu_control_command( const char* fmt, ... ) -{ - va_list args; - char command[256]; - int len, fd; - - va_start(args, fmt); - len = qemu_command_vformat( command, sizeof command, fmt, args ); - va_end(args); - - if (len < 0 || len >= (int)sizeof command) { - if (len < 0) { - D("%s: could not send: %s", __FUNCTION__, strerror(errno)); - } else { - D("%s: too large %d > %d", __FUNCTION__, len, (int)(sizeof command)); - } - errno = EINVAL; - return -1; - } - - return qemu_control_send( command, len ); -} - -extern int qemu_control_query( const char* question, int questionlen, - char* answer, int answersize ) -{ - int ret, fd, len, result = -1; - char header[5], *end; - - if (questionlen <= 0) { - errno = EINVAL; - return -1; - } - - fd = qemu_control_fd(); - if (fd < 0) - return -1; - - ret = qemu_control_write( fd, question, questionlen ); - if (ret != questionlen) { - D("%s: could not write all: %d < %d", __FUNCTION__, - ret, questionlen); - goto Exit; - } - - /* read a 4-byte header giving the length of the following content */ - ret = qemu_control_read( fd, header, 4 ); - if (ret != 4) { - D("%s: could not read header (%d != 4)", - __FUNCTION__, ret); - goto Exit; - } - - header[5] = 0; - len = strtol( header, &end, 16 ); - if ( len < 0 || end == NULL || end != header+4 || len > answersize ) { - D("%s: could not parse header: '%s'", - __FUNCTION__, header); - goto Exit; - } - - /* read the answer */ - ret = qemu_control_read( fd, answer, len ); - if (ret != len) { - D("%s: could not read all of answer %d < %d", - __FUNCTION__, ret, len); - goto Exit; - } - - result = len; - -Exit: - close(fd); - return result; -} -- cgit v1.1