devices.c revision b0ab94b7d5a888f0b6920b156e5c6a075fa0741a
14f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* 24f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 34f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * 44f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 54f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * you may not use this file except in compliance with the License. 64f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * You may obtain a copy of the License at 74f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * 84f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 94f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * 104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * See the License for the specific language governing permissions and 144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * limitations under the License. 154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project */ 164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <errno.h> 184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <stdio.h> 194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <stdlib.h> 204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/stat.h> 214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/types.h> 224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <fcntl.h> 244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <dirent.h> 254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <unistd.h> 264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <string.h> 274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/socket.h> 294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/un.h> 304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <linux/netlink.h> 314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <private/android_filesystem_config.h> 324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/time.h> 334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <asm/page.h> 344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include "init.h" 364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include "devices.h" 37b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross#include "util.h" 384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define CMDLINE_PREFIX "/dev" 404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define SYSFS_PREFIX "/sys" 414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define FIRMWARE_DIR "/etc/firmware" 424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define MAX_QEMU_PERM 6 434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 440dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic int device_fd = -1; 450dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross 464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct uevent { 474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *action; 484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *path; 494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *subsystem; 504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *firmware; 51b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *partition_name; 52b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int partition_num; 534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int major; 544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int minor; 554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int open_uevent_socket(void) 584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct sockaddr_nl addr; 604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int sz = 64*1024; // XXX larger? udev uses 16MB! 614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int s; 624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project memset(&addr, 0, sizeof(addr)); 644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project addr.nl_family = AF_NETLINK; 654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project addr.nl_pid = getpid(); 664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project addr.nl_groups = 0xffffffff; 674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project s = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT); 694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(s < 0) 704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project setsockopt(s, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)); 734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(s); 764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return s; 804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct perms_ { 834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *name; 844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t perm; 854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int uid; 864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int gid; 874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned short prefix; 884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic struct perms_ devperms[] = { 904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/null", 0666, AID_ROOT, AID_ROOT, 0 }, 914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/zero", 0666, AID_ROOT, AID_ROOT, 0 }, 924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/full", 0666, AID_ROOT, AID_ROOT, 0 }, 934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/ptmx", 0666, AID_ROOT, AID_ROOT, 0 }, 944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/tty", 0666, AID_ROOT, AID_ROOT, 0 }, 954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/random", 0666, AID_ROOT, AID_ROOT, 0 }, 964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/urandom", 0666, AID_ROOT, AID_ROOT, 0 }, 974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/ashmem", 0666, AID_ROOT, AID_ROOT, 0 }, 984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/binder", 0666, AID_ROOT, AID_ROOT, 0 }, 994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* logger should be world writable (for logging) but not readable */ 1014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/log/", 0662, AID_ROOT, AID_LOG, 1 }, 1024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 10346e8863d77912ad6d76ed7d258dfc554a5cdb36dDima Zavin /* the msm hw3d client device node is world writable/readable. */ 10446e8863d77912ad6d76ed7d258dfc554a5cdb36dDima Zavin { "/dev/msm_hw3dc", 0666, AID_ROOT, AID_ROOT, 0 }, 10546e8863d77912ad6d76ed7d258dfc554a5cdb36dDima Zavin 10637b210f56036cda41b0407e841fe79fb4db310fcDima Zavin /* gpu driver for adreno200 is globally accessible */ 10737b210f56036cda41b0407e841fe79fb4db310fcDima Zavin { "/dev/kgsl", 0666, AID_ROOT, AID_ROOT, 0 }, 10837b210f56036cda41b0407e841fe79fb4db310fcDima Zavin 1094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* these should not be world writable */ 1106ed11ebecd3eaffd84d79706a4a3a74d39f19715Iliyan Malchev { "/dev/diag", 0660, AID_RADIO, AID_RADIO, 0 }, 1116ed11ebecd3eaffd84d79706a4a3a74d39f19715Iliyan Malchev { "/dev/diag_arm9", 0660, AID_RADIO, AID_RADIO, 0 }, 1124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/android_adb", 0660, AID_ADB, AID_ADB, 0 }, 1134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/android_adb_enable", 0660, AID_ADB, AID_ADB, 0 }, 11435237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project { "/dev/ttyMSM0", 0600, AID_BLUETOOTH, AID_BLUETOOTH, 0 }, 11535237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project { "/dev/ttyHS0", 0600, AID_BLUETOOTH, AID_BLUETOOTH, 0 }, 116be65da47e69c427d6326603e7eccd84957cc34d2Ken Schultz { "/dev/uinput", 0660, AID_SYSTEM, AID_BLUETOOTH, 0 }, 1174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/alarm", 0664, AID_SYSTEM, AID_RADIO, 0 }, 11835237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project { "/dev/tty0", 0660, AID_ROOT, AID_SYSTEM, 0 }, 1194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/graphics/", 0660, AID_ROOT, AID_GRAPHICS, 1 }, 12046e8863d77912ad6d76ed7d258dfc554a5cdb36dDima Zavin { "/dev/msm_hw3dm", 0660, AID_SYSTEM, AID_GRAPHICS, 0 }, 1214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/input/", 0660, AID_ROOT, AID_INPUT, 1 }, 1224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/eac", 0660, AID_ROOT, AID_AUDIO, 0 }, 1234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/cam", 0660, AID_ROOT, AID_CAMERA, 0 }, 1244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/pmem", 0660, AID_SYSTEM, AID_GRAPHICS, 0 }, 1254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/pmem_adsp", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/pmem_camera", 0660, AID_SYSTEM, AID_CAMERA, 1 }, 1274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/oncrpc/", 0660, AID_ROOT, AID_SYSTEM, 1 }, 1284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/adsp/", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 129102f6d2c64bbf55e1ec47061a0bc0bcd24991127Sean McNeil { "/dev/snd/", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/mt9t013", 0660, AID_SYSTEM, AID_SYSTEM, 0 }, 131fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev { "/dev/msm_camera/", 0660, AID_SYSTEM, AID_SYSTEM, 1 }, 1324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/akm8976_daemon",0640, AID_COMPASS, AID_SYSTEM, 0 }, 1334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/akm8976_aot", 0640, AID_COMPASS, AID_SYSTEM, 0 }, 1349a52eda8c5dd9df763a63f9b71cd24847f014737Iliyan Malchev { "/dev/akm8973_daemon",0640, AID_COMPASS, AID_SYSTEM, 0 }, 1359a52eda8c5dd9df763a63f9b71cd24847f014737Iliyan Malchev { "/dev/akm8973_aot", 0640, AID_COMPASS, AID_SYSTEM, 0 }, 1369a52eda8c5dd9df763a63f9b71cd24847f014737Iliyan Malchev { "/dev/bma150", 0640, AID_COMPASS, AID_SYSTEM, 0 }, 1373306e0678c5e68c1b7e8d5c99499b7645e4952f3Iliyan Malchev { "/dev/cm3602", 0640, AID_COMPASS, AID_SYSTEM, 0 }, 1384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/akm8976_pffd", 0640, AID_COMPASS, AID_SYSTEM, 0 }, 1393bc1e9cd7b2832d51c442c0342054e0235a383f6Iliyan Malchev { "/dev/lightsensor", 0640, AID_SYSTEM, AID_SYSTEM, 0 }, 1404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/msm_pcm_out", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/msm_pcm_in", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/msm_pcm_ctl", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1435ae090ed949cea9d1e7ab1552b455a229f8f9757The Android Open Source Project { "/dev/msm_snd", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/msm_mp3", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 145c822213603107b72bca90bd2984f4781dfcf22c4Brian Swetland { "/dev/audience_a1026", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 1461340a095ac9f1ea007752288a4407490ddb6935cIliyan Malchev { "/dev/tpa2018d1", 0660, AID_SYSTEM, AID_AUDIO, 1 }, 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "/dev/msm_audpre", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 148c822213603107b72bca90bd2984f4781dfcf22c4Brian Swetland { "/dev/msm_audio_ctl", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "/dev/htc-acoustic", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 150c84016778f9efd0d15f3c5ad7b7109833fb45c9aDima Zavin { "/dev/vdec", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 1518234aa375896718e19b4450bcb44fa4376f53486Dima Zavin { "/dev/q6venc", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 1521ccef18e69acdc4276a6c4a0c449ced6be395fc3Masaki Sato { "/dev/snd/dsp", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 1531ccef18e69acdc4276a6c4a0c449ced6be395fc3Masaki Sato { "/dev/snd/dsp1", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 1541ccef18e69acdc4276a6c4a0c449ced6be395fc3Masaki Sato { "/dev/snd/mixer", 0660, AID_SYSTEM, AID_AUDIO, 0 }, 1554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/smd0", 0640, AID_RADIO, AID_RADIO, 0 }, 1564a762357d05fe2152dbe5d4b7085d01a5d4ccbf2Jack Veenstra { "/dev/qemu_trace", 0666, AID_SYSTEM, AID_SYSTEM, 0 }, 1574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/qmi", 0640, AID_RADIO, AID_RADIO, 0 }, 1584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/qmi0", 0640, AID_RADIO, AID_RADIO, 0 }, 1594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/qmi1", 0640, AID_RADIO, AID_RADIO, 0 }, 1604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { "/dev/qmi2", 0640, AID_RADIO, AID_RADIO, 0 }, 161e910ea596240d355a1e25b66f76fd8d8fdfbbba6Erik Gilling /* CDMA radio interface MUX */ 162e910ea596240d355a1e25b66f76fd8d8fdfbbba6Erik Gilling { "/dev/ts0710mux", 0640, AID_RADIO, AID_RADIO, 1 }, 16388dc657d50cb3289a9011828c497eee996ed958cChia-chi Yeh { "/dev/ppp", 0660, AID_RADIO, AID_VPN, 0 }, 16488dc657d50cb3289a9011828c497eee996ed958cChia-chi Yeh { "/dev/tun", 0640, AID_VPN, AID_VPN, 0 }, 1654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project { NULL, 0, 0, 0, 0 }, 1664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 1674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* devperms_partners list and perm_node are for hardware specific /dev entries */ 1694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct perm_node { 1704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perms_ dp; 1714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct listnode plist; 1724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 1734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectlist_declare(devperms_partners); 1744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* 1764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * Permission override when in emulator mode, must be parsed before 1774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * system properties is initalized. 1784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project */ 1794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int qemu_perm_count; 1804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic struct perms_ qemu_perms[MAX_QEMU_PERM + 1]; 1814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectint add_devperms_partners(const char *name, mode_t perm, unsigned int uid, 1834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int gid, unsigned short prefix) { 1844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int size; 1854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perm_node *node = malloc(sizeof (struct perm_node)); 1864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!node) 1874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOMEM; 1884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project size = strlen(name) + 1; 1904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if ((node->dp.name = malloc(size)) == NULL) 1914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOMEM; 1924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project memcpy(node->dp.name, name, size); 1944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.perm = perm; 1954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.uid = uid; 1964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.gid = gid; 1974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.prefix = prefix; 1984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project list_add_tail(&devperms_partners, &node->plist); 2004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0; 2014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectvoid qemu_init(void) { 2044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perm_count = 0; 2054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project memset(&qemu_perms, 0, sizeof(qemu_perms)); 2064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int qemu_perm(const char* name, mode_t perm, unsigned int uid, 2094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int gid, unsigned short prefix) 2104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *buf; 2124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (qemu_perm_count == MAX_QEMU_PERM) 2134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOSPC; 2144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project buf = malloc(strlen(name) + 1); 2164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!buf) 2174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -errno; 2184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project strlcpy(buf, name, strlen(name) + 1); 2204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perms[qemu_perm_count].name = buf; 2214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perms[qemu_perm_count].perm = perm; 2224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perms[qemu_perm_count].uid = uid; 2234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perms[qemu_perm_count].gid = gid; 2244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perms[qemu_perm_count].prefix = prefix; 2254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perm_count++; 2274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0; 2284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* Permission overrides for emulator that are parsed from /proc/cmdline. */ 2314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectvoid qemu_cmdline(const char* name, const char *value) 2324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *buf; 2344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!strcmp(name, "android.ril")) { 2354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* cmd line params currently assume /dev/ prefix */ 2364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (asprintf(&buf, CMDLINE_PREFIX"/%s", value) == -1) { 2374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 2384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project INFO("nani- buf:: %s\n", buf); 2404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project qemu_perm(buf, 0660, AID_RADIO, AID_ROOT, 0); 2414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int get_device_perm_inner(struct perms_ *perms, const char *path, 2454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned *uid, unsigned *gid, mode_t *perm) 2464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int i; 2484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project for(i = 0; perms[i].name; i++) { 2494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(perms[i].prefix) { 2514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strncmp(path, perms[i].name, strlen(perms[i].name))) 2524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 2534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 2544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(path, perms[i].name)) 2554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 2564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *uid = perms[i].uid; 2584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *gid = perms[i].gid; 2594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *perm = perms[i].perm; 2604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0; 2614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 2634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* First checks for emulator specific permissions specified in /proc/cmdline. */ 2664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic mode_t get_device_perm(const char *path, unsigned *uid, unsigned *gid) 2674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t perm; 2694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (get_device_perm_inner(qemu_perms, path, uid, gid, &perm) == 0) { 2714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return perm; 2724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if (get_device_perm_inner(devperms, path, uid, gid, &perm) == 0) { 2734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return perm; 2744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 2754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct listnode *node; 2764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perm_node *perm_node; 2774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perms_ *dp; 2784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* Check partners list. */ 2804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project list_for_each(node, &devperms_partners) { 2814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project perm_node = node_to_item(node, struct perm_node, plist); 2824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dp = &perm_node->dp; 2834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (dp->prefix) { 2854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (strncmp(path, dp->name, strlen(dp->name))) 2864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 2874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 2884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (strcmp(path, dp->name)) 2894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 2904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* Found perm in partner list. */ 2924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *uid = dp->uid; 2934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *gid = dp->gid; 2944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return dp->perm; 2954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* Default if nothing found. */ 2974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *uid = 0; 2984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *gid = 0; 2994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0600; 3004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 3024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void make_device(const char *path, int block, int major, int minor) 3044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 3054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned uid; 3064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned gid; 3074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t mode; 3084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dev_t dev; 3094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(major > 255 || minor > 255) 3114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 3124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode = get_device_perm(path, &uid, &gid) | (block ? S_IFBLK : S_IFCHR); 3144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dev = (major << 8) | minor; 3156405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly /* Temporarily change egid to avoid race condition setting the gid of the 3166405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * device node. Unforunately changing the euid would prevent creation of 3176405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * some device nodes, so the uid has to be set with chown() and is still 3186405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * racy. Fixing the gid race at least fixed the issue with system_server 3196405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * opening dynamic input devices under the AID_INPUT gid. */ 3206405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly setegid(gid); 3214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mknod(path, mode, dev); 3226405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly chown(path, uid, -1); 3236405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly setegid(AID_ROOT); 3244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 3254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3261e070846f8908dff15086efa12fbba01ab7eae15Chuck Tuffli#if LOG_UEVENTS 3274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic inline suseconds_t get_usecs(void) 3294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 3304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct timeval tv; 3314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project gettimeofday(&tv, 0); 3324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return tv.tv_sec * (suseconds_t) 1000000 + tv.tv_usec; 3334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 3344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define log_event_print(x...) INFO(x) 3364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#else 3384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define log_event_print(fmt, args...) do { } while (0) 3404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define get_usecs() 0 3414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#endif 3434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void parse_event(const char *msg, struct uevent *uevent) 3454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 3464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action = ""; 3474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path = ""; 3484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->subsystem = ""; 3494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware = ""; 3504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->major = -1; 3514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->minor = -1; 352b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_name = NULL; 353b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_num = -1; 3544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* currently ignoring SEQNUM */ 3564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while(*msg) { 3574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strncmp(msg, "ACTION=", 7)) { 3584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 7; 3594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action = msg; 3604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "DEVPATH=", 8)) { 3614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 8; 3624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path = msg; 3634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "SUBSYSTEM=", 10)) { 3644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 10; 3654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->subsystem = msg; 3664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "FIRMWARE=", 9)) { 3674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 9; 3684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware = msg; 3694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "MAJOR=", 6)) { 3704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 6; 3714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->major = atoi(msg); 3724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "MINOR=", 6)) { 3734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 6; 3744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->minor = atoi(msg); 375b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } else if(!strncmp(msg, "PARTN=", 6)) { 376b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross msg += 6; 377b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_num = atoi(msg); 378b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } else if(!strncmp(msg, "PARTNAME=", 9)) { 379b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross msg += 9; 380b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_name = msg; 3814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* advance to after the next \0 */ 3844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while(*msg++) 3854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ; 3864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("event { '%s', '%s', '%s', '%s', %d, %d }\n", 3894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action, uevent->path, uevent->subsystem, 3904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware, uevent->major, uevent->minor); 3914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 3924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 393b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossstatic char **parse_platform_block_device(struct uevent *uevent) 394b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 395b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *driver; 396b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *path; 397b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *slash; 398b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 399b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[256]; 400b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char link_path[256]; 401b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int fd; 402b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int link_num = 0; 403b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 404b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *p; 405b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross unsigned int size; 406b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross struct stat info; 407b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 408b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char **links = malloc(sizeof(char *) * 4); 409b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!links) 410b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return NULL; 411b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memset(links, 0, sizeof(char *) * 4); 412b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 413b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross /* Drop "/devices/platform/" */ 414b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross path = uevent->path; 415b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross driver = path + 18; 416b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strchr(driver, '/'); 417b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!slash) 418b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross goto err; 419b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width = slash - driver; 420b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width <= 0) 421b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross goto err; 422b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 423b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross snprintf(link_path, sizeof(link_path), "/dev/block/platform/%.*s", 424b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width, driver); 425b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 426b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (uevent->partition_name) { 427b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross p = strdup(uevent->partition_name); 428b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross sanitize(p); 429b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/by-name/%s", link_path, p) > 0) 430b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 431b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 432b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 433b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(p); 434b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 435b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 436b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (uevent->partition_num >= 0) { 437b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/by-num/p%d", link_path, uevent->partition_num) > 0) 438b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 439b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 440b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 441b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 442b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 443b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strrchr(path, '/'); 444b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/%s", link_path, slash + 1) > 0) 445b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 446b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 447b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 448b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 449b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return links; 450b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 451b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crosserr: 452b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links); 453b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return NULL; 454b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 455b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 4564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void handle_device_event(struct uevent *uevent) 4574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 4584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char devpath[96]; 4594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *base, *name; 460b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char **links = NULL; 4614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int block; 462b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int i; 4634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* if it's not a /dev device, nothing to do */ 4654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if((uevent->major < 0) || (uevent->minor < 0)) 4664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 4674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* do we have a name? */ 4694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project name = strrchr(uevent->path, '/'); 4704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!name) 4714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 4724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project name++; 4734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* too-long names would overrun our buffer */ 4754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strlen(name) > 64) 4764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 4774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* are we block or char? where should we live? */ 47935237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project if(!strncmp(uevent->subsystem, "block", 5)) { 4804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project block = 1; 4814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/block/"; 4824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 483b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!strncmp(uevent->path, "/devices/platform/", 18)) 484b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links = parse_platform_block_device(uevent); 4854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 4864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project block = 0; 4874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* this should probably be configurable somehow */ 48835237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project if(!strncmp(uevent->subsystem, "graphics", 8)) { 4894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/graphics/"; 4904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 49135237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if (!strncmp(uevent->subsystem, "oncrpc", 6)) { 4924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/oncrpc/"; 4934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 49435237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if (!strncmp(uevent->subsystem, "adsp", 4)) { 4954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/adsp/"; 4964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 497fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev } else if (!strncmp(uevent->subsystem, "msm_camera", 10)) { 498fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev base = "/dev/msm_camera/"; 499fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev mkdir(base, 0755); 500fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev } else if(!strncmp(uevent->subsystem, "input", 5)) { 5014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/input/"; 5024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 50335237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if(!strncmp(uevent->subsystem, "mtd", 3)) { 5044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/mtd/"; 5054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 5065bb44c8ea2bc513fefc526918980ab3d17494eccXiaopeng Yang } else if(!strncmp(uevent->subsystem, "sound", 5)) { 5075bb44c8ea2bc513fefc526918980ab3d17494eccXiaopeng Yang base = "/dev/snd/"; 5085bb44c8ea2bc513fefc526918980ab3d17494eccXiaopeng Yang mkdir(base, 0755); 50935237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if(!strncmp(uevent->subsystem, "misc", 4) && 5104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project !strncmp(name, "log_", 4)) { 5114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/log/"; 5124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 5134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project name += 4; 5144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else 5154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/"; 5164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project snprintf(devpath, sizeof(devpath), "%s%s", base, name); 5194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strcmp(uevent->action, "add")) { 5214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project make_device(devpath, block, uevent->major, uevent->minor); 522b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 523b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 524b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross make_link(devpath, links[i]); 525b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 5264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strcmp(uevent->action, "remove")) { 529b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 530b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 531b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross remove_link(devpath, links[i]); 532b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 5334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unlink(devpath); 534b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 535b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 536b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 537b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 538b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links[i]); 539b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links); 5404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 5424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int load_firmware(int fw_fd, int loading_fd, int data_fd) 5444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 5454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct stat st; 5464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project long len_to_copy; 5474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int ret = 0; 5484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fstat(fw_fd, &st) < 0) 5504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 5514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project len_to_copy = st.st_size; 5524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "1", 1); /* start transfer */ 5544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while (len_to_copy > 0) { 5564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char buf[PAGE_SIZE]; 5574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ssize_t nr; 5584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nr = read(fw_fd, buf, sizeof(buf)); 5604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!nr) 5614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project break; 5624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(nr < 0) { 5634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ret = -1; 5644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project break; 5654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project len_to_copy -= nr; 5684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while (nr > 0) { 5694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ssize_t nw = 0; 5704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nw = write(data_fd, buf + nw, nr); 5724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(nw <= 0) { 5734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ret = -1; 5744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto out; 5754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nr -= nw; 5774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectout: 5814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!ret) 5824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "0", 1); /* successful end of transfer */ 5834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else 5844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "-1", 2); /* abort transfer */ 5854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return ret; 5874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 5884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void process_firmware_event(struct uevent *uevent) 5904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 5914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *root, *loading, *data, *file; 5924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int l, loading_fd, data_fd, fw_fd; 5934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("firmware event { '%s', '%s' }\n", 5954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path, uevent->firmware); 5964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&root, SYSFS_PREFIX"%s/", uevent->path); 5984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 5994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 6004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&loading, "%sloading", root); 6024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 6034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto root_free_out; 6044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&data, "%sdata", root); 6064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 6074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto loading_free_out; 6084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&file, FIRMWARE_DIR"/%s", uevent->firmware); 6104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 6114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto data_free_out; 6124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project loading_fd = open(loading, O_WRONLY); 6144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(loading_fd < 0) 6154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto file_free_out; 6164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project data_fd = open(data, O_WRONLY); 6184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(data_fd < 0) 6194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto loading_close_out; 6204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fw_fd = open(file, O_RDONLY); 6224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fw_fd < 0) 6234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto data_close_out; 6244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!load_firmware(fw_fd, loading_fd, data_fd)) 6264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("firmware copy success { '%s', '%s' }\n", root, file); 6274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else 6284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("firmware copy failure { '%s', '%s' }\n", root, file); 6294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fw_fd); 6314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectdata_close_out: 6324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(data_fd); 6334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectloading_close_out: 6344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(loading_fd); 6354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectfile_free_out: 6364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(file); 6374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectdata_free_out: 6384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(data); 6394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectloading_free_out: 6404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(loading); 6414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectroot_free_out: 6424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(root); 6434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 6444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void handle_firmware_event(struct uevent *uevent) 6464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 6474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project pid_t pid; 6484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(uevent->subsystem, "firmware")) 6504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 6514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(uevent->action, "add")) 6534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 6544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* we fork, to avoid making large memory allocations in init proper */ 6564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project pid = fork(); 6574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!pid) { 6584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project process_firmware_event(uevent); 6594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project exit(EXIT_SUCCESS); 6604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 6624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define UEVENT_MSG_LEN 1024 6640dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossvoid handle_device_fd() 6654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 6664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char msg[UEVENT_MSG_LEN+2]; 6674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int n; 6684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6690dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross while((n = recv(device_fd, msg, UEVENT_MSG_LEN, 0)) > 0) { 6704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct uevent uevent; 6714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(n == UEVENT_MSG_LEN) /* overflow -- discard */ 6734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 6744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg[n] = '\0'; 6764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg[n+1] = '\0'; 6774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project parse_event(msg, &uevent); 6794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project handle_device_event(&uevent); 6814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project handle_firmware_event(&uevent); 6824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 6844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* Coldboot walks parts of the /sys tree and pokes the uevent files 6864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** to cause the kernel to regenerate device add events that happened 6874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** before init's device manager was started 6884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** 6894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** We drain any pending events from the netlink socket every time 6904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** we poke another uevent file to make sure we don't overrun the 6914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** socket's buffer. 6924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project*/ 6934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6940dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic void do_coldboot(DIR *d) 6954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 6964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct dirent *de; 6974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int dfd, fd; 6984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dfd = dirfd(d); 7004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fd = openat(dfd, "uevent", O_WRONLY); 7024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fd >= 0) { 7034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(fd, "add\n", 4); 7044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fd); 7050dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross handle_device_fd(); 7064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 7074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while((de = readdir(d))) { 7094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project DIR *d2; 7104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(de->d_type != DT_DIR || de->d_name[0] == '.') 7124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 7134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY); 7154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fd < 0) 7164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 7174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project d2 = fdopendir(fd); 7194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(d2 == 0) 7204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fd); 7214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else { 7220dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross do_coldboot(d2); 7234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project closedir(d2); 7244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 7254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 7264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 7274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7280dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic void coldboot(const char *path) 7294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 7304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project DIR *d = opendir(path); 7314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(d) { 7320dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross do_coldboot(d); 7334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project closedir(d); 7344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 7354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 7364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7370dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossvoid device_init(void) 7384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 7394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project suseconds_t t0, t1; 7404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7410dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross device_fd = open_uevent_socket(); 7420dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross if(device_fd < 0) 7430dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross return; 7444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7450dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross fcntl(device_fd, F_SETFD, FD_CLOEXEC); 7460dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross fcntl(device_fd, F_SETFL, O_NONBLOCK); 7474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project t0 = get_usecs(); 7490dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross coldboot("/sys/class"); 7500dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross coldboot("/sys/block"); 7510dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross coldboot("/sys/devices"); 7524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project t1 = get_usecs(); 7534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("coldboot %ld uS\n", ((long) (t1 - t0))); 7550dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross} 7564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7570dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossint get_device_fd() 7580dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross{ 7590dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross return device_fd; 7604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 761