devices.c revision 44b65d047cc39baf30e21bfd8dd438f6bc1f77f5
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 "devices.h" 36b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross#include "util.h" 37ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#include "log.h" 38ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#include "list.h" 394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define SYSFS_PREFIX "/sys" 414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define FIRMWARE_DIR "/etc/firmware" 424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 430dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic int device_fd = -1; 440dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross 454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct uevent { 464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *action; 474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *path; 484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *subsystem; 494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *firmware; 50b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *partition_name; 51b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int partition_num; 524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int major; 534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int minor; 544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int open_uevent_socket(void) 574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct sockaddr_nl addr; 594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int sz = 64*1024; // XXX larger? udev uses 16MB! 604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int s; 614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project memset(&addr, 0, sizeof(addr)); 634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project addr.nl_family = AF_NETLINK; 644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project addr.nl_pid = getpid(); 654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project addr.nl_groups = 0xffffffff; 664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project s = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT); 684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(s < 0) 694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project setsockopt(s, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz)); 724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(s); 754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return s; 794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct perms_ { 824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *name; 834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t perm; 844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int uid; 854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int gid; 864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned short prefix; 874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct perm_node { 904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perms_ dp; 914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct listnode plist; 924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 9344b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Crossstatic list_declare(dev_perms); 944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* 964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * Permission override when in emulator mode, must be parsed before 974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project * system properties is initalized. 984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project */ 9944b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Crossint add_dev_perms(const char *name, mode_t perm, unsigned int uid, 10044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross unsigned int gid, unsigned short prefix) { 1014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int size; 10244b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross char *tmp = 0; 1034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perm_node *node = malloc(sizeof (struct perm_node)); 1044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!node) 1054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOMEM; 1064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project size = strlen(name) + 1; 1084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if ((node->dp.name = malloc(size)) == NULL) 1094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOMEM; 1104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project memcpy(node->dp.name, name, size); 1124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.perm = perm; 1134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.uid = uid; 1144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.gid = gid; 1154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.prefix = prefix; 1164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 11744b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross list_add_tail(&dev_perms, &node->plist); 1184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0; 1194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int get_device_perm_inner(struct perms_ *perms, const char *path, 1224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned *uid, unsigned *gid, mode_t *perm) 1234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 1244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int i; 1254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project for(i = 0; perms[i].name; i++) { 1264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(perms[i].prefix) { 1284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strncmp(path, perms[i].name, strlen(perms[i].name))) 1294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 1304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 1314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(path, perms[i].name)) 1324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 1334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 1344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *uid = perms[i].uid; 1354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *gid = perms[i].gid; 1364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project *perm = perms[i].perm; 1374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0; 1384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 1394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 1404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* First checks for emulator specific permissions specified in /proc/cmdline. */ 1434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic mode_t get_device_perm(const char *path, unsigned *uid, unsigned *gid) 1444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 1454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t perm; 14644b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross struct listnode *node; 14744b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross struct perm_node *perm_node; 14844b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross struct perms_ *dp; 14944b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross 15044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross /* search the perms list in reverse so that ueventd.$hardware can 15144b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross * override ueventd.rc 15244b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross */ 15344b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross list_for_each_reverse(node, &dev_perms) { 15444b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross perm_node = node_to_item(node, struct perm_node, plist); 15544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross dp = &perm_node->dp; 15644b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross 15744b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross if (dp->prefix) { 15844b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross if (strncmp(path, dp->name, strlen(dp->name))) 15944b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross continue; 16044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross } else { 16144b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross if (strcmp(path, dp->name)) 16244b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross continue; 1634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 16444b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *uid = dp->uid; 16544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *gid = dp->gid; 16644b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross return dp->perm; 1674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 16844b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross /* Default if nothing found. */ 16944b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *uid = 0; 17044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *gid = 0; 17144b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross return 0600; 1724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void make_device(const char *path, int block, int major, int minor) 1754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 1764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned uid; 1774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned gid; 1784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t mode; 1794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dev_t dev; 1804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(major > 255 || minor > 255) 1824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 1834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode = get_device_perm(path, &uid, &gid) | (block ? S_IFBLK : S_IFCHR); 1854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dev = (major << 8) | minor; 1866405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly /* Temporarily change egid to avoid race condition setting the gid of the 1876405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * device node. Unforunately changing the euid would prevent creation of 1886405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * some device nodes, so the uid has to be set with chown() and is still 1896405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * racy. Fixing the gid race at least fixed the issue with system_server 1906405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * opening dynamic input devices under the AID_INPUT gid. */ 1916405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly setegid(gid); 1924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mknod(path, mode, dev); 1936405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly chown(path, uid, -1); 1946405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly setegid(AID_ROOT); 1954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1971e070846f8908dff15086efa12fbba01ab7eae15Chuck Tuffli#if LOG_UEVENTS 1984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic inline suseconds_t get_usecs(void) 2004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct timeval tv; 2024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project gettimeofday(&tv, 0); 2034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return tv.tv_sec * (suseconds_t) 1000000 + tv.tv_usec; 2044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define log_event_print(x...) INFO(x) 2074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#else 2094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define log_event_print(fmt, args...) do { } while (0) 2114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define get_usecs() 0 2124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#endif 2144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void parse_event(const char *msg, struct uevent *uevent) 2164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action = ""; 2184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path = ""; 2194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->subsystem = ""; 2204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware = ""; 2214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->major = -1; 2224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->minor = -1; 223b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_name = NULL; 224b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_num = -1; 2254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* currently ignoring SEQNUM */ 2274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while(*msg) { 2284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strncmp(msg, "ACTION=", 7)) { 2294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 7; 2304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action = msg; 2314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "DEVPATH=", 8)) { 2324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 8; 2334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path = msg; 2344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "SUBSYSTEM=", 10)) { 2354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 10; 2364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->subsystem = msg; 2374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "FIRMWARE=", 9)) { 2384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 9; 2394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware = msg; 2404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "MAJOR=", 6)) { 2414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 6; 2424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->major = atoi(msg); 2434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "MINOR=", 6)) { 2444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 6; 2454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->minor = atoi(msg); 246b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } else if(!strncmp(msg, "PARTN=", 6)) { 247b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross msg += 6; 248b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_num = atoi(msg); 249b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } else if(!strncmp(msg, "PARTNAME=", 9)) { 250b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross msg += 9; 251b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_name = msg; 2524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* advance to after the next \0 */ 2554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while(*msg++) 2564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ; 2574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 2584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("event { '%s', '%s', '%s', '%s', %d, %d }\n", 2604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action, uevent->path, uevent->subsystem, 2614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware, uevent->major, uevent->minor); 2624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 264b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossstatic char **parse_platform_block_device(struct uevent *uevent) 265b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 266b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *driver; 267b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *path; 268b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *slash; 269b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 270b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[256]; 271b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char link_path[256]; 272b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int fd; 273b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int link_num = 0; 274b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 275b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *p; 276b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross unsigned int size; 277b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross struct stat info; 278b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 279b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char **links = malloc(sizeof(char *) * 4); 280b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!links) 281b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return NULL; 282b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memset(links, 0, sizeof(char *) * 4); 283b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 284b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross /* Drop "/devices/platform/" */ 285b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross path = uevent->path; 286b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross driver = path + 18; 287b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strchr(driver, '/'); 288b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!slash) 289b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross goto err; 290b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width = slash - driver; 291b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (width <= 0) 292b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross goto err; 293b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 294b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross snprintf(link_path, sizeof(link_path), "/dev/block/platform/%.*s", 295b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross width, driver); 296b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 297b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (uevent->partition_name) { 298b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross p = strdup(uevent->partition_name); 299b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross sanitize(p); 300b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/by-name/%s", link_path, p) > 0) 301b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 302b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 303b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 304b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(p); 305b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 306b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 307b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (uevent->partition_num >= 0) { 308b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/by-num/p%d", link_path, uevent->partition_num) > 0) 309b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 310b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 311b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 312b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 313b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 314b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strrchr(path, '/'); 315b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/%s", link_path, slash + 1) > 0) 316b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 317b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 318b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 319b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 320b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return links; 321b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 322b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crosserr: 323b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links); 324b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return NULL; 325b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 326b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 3274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void handle_device_event(struct uevent *uevent) 3284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 3294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char devpath[96]; 3304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *base, *name; 331b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char **links = NULL; 3324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int block; 333b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int i; 3344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* if it's not a /dev device, nothing to do */ 3364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if((uevent->major < 0) || (uevent->minor < 0)) 3374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 3384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* do we have a name? */ 3404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project name = strrchr(uevent->path, '/'); 3414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!name) 3424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 3434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project name++; 3444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* too-long names would overrun our buffer */ 3464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strlen(name) > 64) 3474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 3484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* are we block or char? where should we live? */ 35035237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project if(!strncmp(uevent->subsystem, "block", 5)) { 3514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project block = 1; 3524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/block/"; 3534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 354b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!strncmp(uevent->path, "/devices/platform/", 18)) 355b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links = parse_platform_block_device(uevent); 3564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 3574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project block = 0; 3584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* this should probably be configurable somehow */ 35935237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project if(!strncmp(uevent->subsystem, "graphics", 8)) { 3604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/graphics/"; 3614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 36235237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if (!strncmp(uevent->subsystem, "oncrpc", 6)) { 3634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/oncrpc/"; 3644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 36535237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if (!strncmp(uevent->subsystem, "adsp", 4)) { 3664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/adsp/"; 3674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 368fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev } else if (!strncmp(uevent->subsystem, "msm_camera", 10)) { 369fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev base = "/dev/msm_camera/"; 370fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev mkdir(base, 0755); 371fc0182eb1db0620eb71fb6ca219b15a17dcd912fIliyan Malchev } else if(!strncmp(uevent->subsystem, "input", 5)) { 3724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/input/"; 3734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 37435237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if(!strncmp(uevent->subsystem, "mtd", 3)) { 3754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/mtd/"; 3764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 3775bb44c8ea2bc513fefc526918980ab3d17494eccXiaopeng Yang } else if(!strncmp(uevent->subsystem, "sound", 5)) { 3785bb44c8ea2bc513fefc526918980ab3d17494eccXiaopeng Yang base = "/dev/snd/"; 3795bb44c8ea2bc513fefc526918980ab3d17494eccXiaopeng Yang mkdir(base, 0755); 38035237d135807af84bf9b0e5b8d7f8633e58db6f5The Android Open Source Project } else if(!strncmp(uevent->subsystem, "misc", 4) && 3814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project !strncmp(name, "log_", 4)) { 3824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/log/"; 3834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mkdir(base, 0755); 3844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project name += 4; 3854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else 3864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project base = "/dev/"; 3874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project snprintf(devpath, sizeof(devpath), "%s%s", base, name); 3904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strcmp(uevent->action, "add")) { 3924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project make_device(devpath, block, uevent->major, uevent->minor); 393b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 394b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 395b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross make_link(devpath, links[i]); 396b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 3974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strcmp(uevent->action, "remove")) { 400b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 401b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 402b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross remove_link(devpath, links[i]); 403b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 4044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unlink(devpath); 405b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 406b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 407b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 408b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 409b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links[i]); 410b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links); 4114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 4134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int load_firmware(int fw_fd, int loading_fd, int data_fd) 4154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 4164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct stat st; 4174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project long len_to_copy; 4184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int ret = 0; 4194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fstat(fw_fd, &st) < 0) 4214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 4224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project len_to_copy = st.st_size; 4234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "1", 1); /* start transfer */ 4254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while (len_to_copy > 0) { 4274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char buf[PAGE_SIZE]; 4284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ssize_t nr; 4294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nr = read(fw_fd, buf, sizeof(buf)); 4314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!nr) 4324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project break; 4334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(nr < 0) { 4344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ret = -1; 4354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project break; 4364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project len_to_copy -= nr; 4394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while (nr > 0) { 4404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ssize_t nw = 0; 4414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nw = write(data_fd, buf + nw, nr); 4434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(nw <= 0) { 4444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ret = -1; 4454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto out; 4464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nr -= nw; 4484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectout: 4524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!ret) 4534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "0", 1); /* successful end of transfer */ 4544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else 4554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "-1", 2); /* abort transfer */ 4564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return ret; 4584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 4594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void process_firmware_event(struct uevent *uevent) 4614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 4624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *root, *loading, *data, *file; 4634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int l, loading_fd, data_fd, fw_fd; 4644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("firmware event { '%s', '%s' }\n", 4664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path, uevent->firmware); 4674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&root, SYSFS_PREFIX"%s/", uevent->path); 4694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 4704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 4714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&loading, "%sloading", root); 4734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 4744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto root_free_out; 4754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&data, "%sdata", root); 4774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 4784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto loading_free_out; 4794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&file, FIRMWARE_DIR"/%s", uevent->firmware); 4814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 4824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto data_free_out; 4834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project loading_fd = open(loading, O_WRONLY); 4854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(loading_fd < 0) 4864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto file_free_out; 4874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project data_fd = open(data, O_WRONLY); 4894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(data_fd < 0) 4904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto loading_close_out; 4914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fw_fd = open(file, O_RDONLY); 4934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fw_fd < 0) 4944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto data_close_out; 4954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 4964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!load_firmware(fw_fd, loading_fd, data_fd)) 4974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("firmware copy success { '%s', '%s' }\n", root, file); 4984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else 4994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("firmware copy failure { '%s', '%s' }\n", root, file); 5004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fw_fd); 5024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectdata_close_out: 5034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(data_fd); 5044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectloading_close_out: 5054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(loading_fd); 5064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectfile_free_out: 5074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(file); 5084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectdata_free_out: 5094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(data); 5104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectloading_free_out: 5114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(loading); 5124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectroot_free_out: 5134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(root); 5144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 5154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void handle_firmware_event(struct uevent *uevent) 5174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 5184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project pid_t pid; 5194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(uevent->subsystem, "firmware")) 5214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 5224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(uevent->action, "add")) 5244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 5254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* we fork, to avoid making large memory allocations in init proper */ 5274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project pid = fork(); 5284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!pid) { 5294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project process_firmware_event(uevent); 5304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project exit(EXIT_SUCCESS); 5314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 5334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define UEVENT_MSG_LEN 1024 5350dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossvoid handle_device_fd() 5364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 5374f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char msg[UEVENT_MSG_LEN+2]; 5384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int n; 5394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5400dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross while((n = recv(device_fd, msg, UEVENT_MSG_LEN, 0)) > 0) { 5414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct uevent uevent; 5424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(n == UEVENT_MSG_LEN) /* overflow -- discard */ 5444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 5454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg[n] = '\0'; 5474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg[n+1] = '\0'; 5484f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project parse_event(msg, &uevent); 5504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project handle_device_event(&uevent); 5524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project handle_firmware_event(&uevent); 5534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 5554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* Coldboot walks parts of the /sys tree and pokes the uevent files 5574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** to cause the kernel to regenerate device add events that happened 5584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** before init's device manager was started 5594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** 5604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** We drain any pending events from the netlink socket every time 5614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** we poke another uevent file to make sure we don't overrun the 5624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** socket's buffer. 5634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project*/ 5644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5650dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic void do_coldboot(DIR *d) 5664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 5674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct dirent *de; 5684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int dfd, fd; 5694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dfd = dirfd(d); 5714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fd = openat(dfd, "uevent", O_WRONLY); 5734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fd >= 0) { 5744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(fd, "add\n", 4); 5754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fd); 5760dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross handle_device_fd(); 5774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while((de = readdir(d))) { 5804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project DIR *d2; 5814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(de->d_type != DT_DIR || de->d_name[0] == '.') 5834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 5844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY); 5864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fd < 0) 5874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 5884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project d2 = fdopendir(fd); 5904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(d2 == 0) 5914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fd); 5924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else { 5930dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross do_coldboot(d2); 5944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project closedir(d2); 5954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 5974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 5984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 5990dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic void coldboot(const char *path) 6004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 6014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project DIR *d = opendir(path); 6024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(d) { 6030dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross do_coldboot(d); 6044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project closedir(d); 6054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 6074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6080dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossvoid device_init(void) 6094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 6104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project suseconds_t t0, t1; 611f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross struct stat info; 612f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross int fd; 6134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6140dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross device_fd = open_uevent_socket(); 6150dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross if(device_fd < 0) 6160dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross return; 6174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6180dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross fcntl(device_fd, F_SETFD, FD_CLOEXEC); 6190dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross fcntl(device_fd, F_SETFL, O_NONBLOCK); 6204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 621f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (stat(coldboot_done, &info) < 0) { 622f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross t0 = get_usecs(); 623f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross coldboot("/sys/class"); 624f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross coldboot("/sys/block"); 625f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross coldboot("/sys/devices"); 626f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross t1 = get_usecs(); 627f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross fd = open(coldboot_done, O_WRONLY|O_CREAT, 0000); 628f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross close(fd); 629f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross log_event_print("coldboot %ld uS\n", ((long) (t1 - t0))); 630f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } else { 631f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross log_event_print("skipping coldboot, already done\n"); 632f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 6330dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross} 6344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6350dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossint get_device_fd() 6360dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross{ 6370dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross return device_fd; 6384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 639