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> 18b93e5812faffd3b6c5fb349072413aace31918d8Olivier Bailly#include <stddef.h> 194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <stdio.h> 204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <stdlib.h> 214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/stat.h> 224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/types.h> 234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <fcntl.h> 254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <dirent.h> 264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <unistd.h> 274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <string.h> 284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/socket.h> 304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/un.h> 314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <linux/netlink.h> 32e46f9d510db9351682cf17c49115110870147335Stephen Smalley 33e46f9d510db9351682cf17c49115110870147335Stephen Smalley#ifdef HAVE_SELINUX 34e46f9d510db9351682cf17c49115110870147335Stephen Smalley#include <selinux/selinux.h> 35e46f9d510db9351682cf17c49115110870147335Stephen Smalley#include <selinux/label.h> 36ae6f3d7c05070f7e0e56fe0056c8923c6ee2f473Stephen Smalley#include <selinux/android.h> 37e46f9d510db9351682cf17c49115110870147335Stephen Smalley#endif 38e46f9d510db9351682cf17c49115110870147335Stephen Smalley 394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <private/android_filesystem_config.h> 404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <sys/time.h> 414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include <asm/page.h> 42982a815c10cc28707d81c46112fc45b1c10df3beColin Cross#include <sys/wait.h> 434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 44da04c52ab1036048520fca265cf02b61dca789e0Dima Zavin#include <cutils/list.h> 453f582e92f07d358f3d0941b86407b39e2e7e67ccVernon Tang#include <cutils/uevent.h> 463f582e92f07d358f3d0941b86407b39e2e7e67ccVernon Tang 474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#include "devices.h" 48b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross#include "util.h" 49ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#include "log.h" 504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define SYSFS_PREFIX "/sys" 5202863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland#define FIRMWARE_DIR1 "/etc/firmware" 5302863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland#define FIRMWARE_DIR2 "/vendor/firmware" 54029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev#define FIRMWARE_DIR3 "/firmware/image" 554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 56e46f9d510db9351682cf17c49115110870147335Stephen Smalley#ifdef HAVE_SELINUX 57e096e36e50b4b66638ebc4d3c09c2ee35f538dfaStephen Smalleyextern struct selabel_handle *sehandle; 58e46f9d510db9351682cf17c49115110870147335Stephen Smalley#endif 59e46f9d510db9351682cf17c49115110870147335Stephen Smalley 600dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic int device_fd = -1; 610dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross 624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct uevent { 634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *action; 644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *path; 654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *subsystem; 664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project const char *firmware; 67b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *partition_name; 68f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong const char *device_name; 69b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int partition_num; 704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int major; 714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int minor; 724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct perms_ { 754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char *name; 76bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland char *attr; 774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t perm; 784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int uid; 794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned int gid; 804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned short prefix; 814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstruct perm_node { 844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct perms_ dp; 854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct listnode plist; 864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project}; 87bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland 88fadb85e3bd333653014df5fcc931d844dc8c3630Colin Crossstruct platform_node { 89fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross char *name; 90fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross int name_len; 91fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct listnode list; 92fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross}; 93fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 94bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetlandstatic list_declare(sys_perms); 9544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Crossstatic list_declare(dev_perms); 96fadb85e3bd333653014df5fcc931d844dc8c3630Colin Crossstatic list_declare(platform_names); 974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 98bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetlandint add_dev_perms(const char *name, const char *attr, 99bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland mode_t perm, unsigned int uid, unsigned int gid, 100bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland unsigned short prefix) { 101bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland struct perm_node *node = calloc(1, sizeof(*node)); 1024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!node) 1034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOMEM; 1044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 105bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland node->dp.name = strdup(name); 106bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (!node->dp.name) 1074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -ENOMEM; 1084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 109bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (attr) { 110bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland node->dp.attr = strdup(attr); 111bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (!node->dp.attr) 112bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland return -ENOMEM; 113bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland } 114bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland 1154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.perm = perm; 1164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.uid = uid; 1174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.gid = gid; 1184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project node->dp.prefix = prefix; 1194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 120bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (attr) 121bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland list_add_tail(&sys_perms, &node->plist); 122bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland else 123bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland list_add_tail(&dev_perms, &node->plist); 124bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland 1254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return 0; 1264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 128bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetlandvoid fixup_sys_perms(const char *upath) 1294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 130bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland char buf[512]; 131bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland struct listnode *node; 132bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland struct perms_ *dp; 1334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 134bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland /* upaths omit the "/sys" that paths in this list 135bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland * contain, so we add 4 when comparing... 136bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland */ 137bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland list_for_each(node, &sys_perms) { 138bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland dp = &(node_to_item(node, struct perm_node, plist))->dp; 139bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (dp->prefix) { 140bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (strncmp(upath, dp->name + 4, strlen(dp->name + 4))) 1414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 1424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else { 143bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if (strcmp(upath, dp->name + 4)) 1444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 1454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 146bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland 147bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland if ((strlen(upath) + strlen(dp->attr) + 6) > sizeof(buf)) 148bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland return; 149bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland 150bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland sprintf(buf,"/sys%s/%s", upath, dp->attr); 151bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland INFO("fixup %s %d %d 0%o\n", buf, dp->uid, dp->gid, dp->perm); 152bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland chown(buf, dp->uid, dp->gid); 153bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland chmod(buf, dp->perm); 1544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 1554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 1574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic mode_t get_device_perm(const char *path, unsigned *uid, unsigned *gid) 1584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 1594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t perm; 16044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross struct listnode *node; 16144b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross struct perm_node *perm_node; 16244b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross struct perms_ *dp; 16344b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross 16444b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross /* search the perms list in reverse so that ueventd.$hardware can 16544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross * override ueventd.rc 16644b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross */ 16744b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross list_for_each_reverse(node, &dev_perms) { 16844b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross perm_node = node_to_item(node, struct perm_node, plist); 16944b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross dp = &perm_node->dp; 17044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross 17144b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross if (dp->prefix) { 17244b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross if (strncmp(path, dp->name, strlen(dp->name))) 17344b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross continue; 17444b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross } else { 17544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross if (strcmp(path, dp->name)) 17644b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross continue; 1774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 17844b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *uid = dp->uid; 17944b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *gid = dp->gid; 18044b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross return dp->perm; 1814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 18244b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross /* Default if nothing found. */ 18344b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *uid = 0; 18444b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross *gid = 0; 18544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross return 0600; 1864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 1874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 188bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetlandstatic void make_device(const char *path, 189bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland const char *upath, 190bc57d4ce925a62f14c28c55e0ff28af1114f12beBrian Swetland int block, int major, int minor) 1914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 1924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned uid; 1934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unsigned gid; 1944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode_t mode; 1954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dev_t dev; 196e46f9d510db9351682cf17c49115110870147335Stephen Smalley#ifdef HAVE_SELINUX 197e46f9d510db9351682cf17c49115110870147335Stephen Smalley char *secontext = NULL; 198e46f9d510db9351682cf17c49115110870147335Stephen Smalley#endif 1994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mode = get_device_perm(path, &uid, &gid) | (block ? S_IFBLK : S_IFCHR); 201e46f9d510db9351682cf17c49115110870147335Stephen Smalley#ifdef HAVE_SELINUX 202e46f9d510db9351682cf17c49115110870147335Stephen Smalley if (sehandle) { 203e46f9d510db9351682cf17c49115110870147335Stephen Smalley selabel_lookup(sehandle, &secontext, path, mode); 204e46f9d510db9351682cf17c49115110870147335Stephen Smalley setfscreatecon(secontext); 205e46f9d510db9351682cf17c49115110870147335Stephen Smalley } 206e46f9d510db9351682cf17c49115110870147335Stephen Smalley#endif 20717dcc5c57dcffb919f3de65ff7a0134ffa3bd874Colin Cross dev = makedev(major, minor); 2086405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly /* Temporarily change egid to avoid race condition setting the gid of the 2096405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * device node. Unforunately changing the euid would prevent creation of 2106405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * some device nodes, so the uid has to be set with chown() and is still 2116405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * racy. Fixing the gid race at least fixed the issue with system_server 2126405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly * opening dynamic input devices under the AID_INPUT gid. */ 2136405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly setegid(gid); 2144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project mknod(path, mode, dev); 2156405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly chown(path, uid, -1); 2166405c6953fa02d41d9f6377f4cdb947604f481c4Nick Pelly setegid(AID_ROOT); 217e46f9d510db9351682cf17c49115110870147335Stephen Smalley#ifdef HAVE_SELINUX 218e46f9d510db9351682cf17c49115110870147335Stephen Smalley if (secontext) { 219e46f9d510db9351682cf17c49115110870147335Stephen Smalley freecon(secontext); 220e46f9d510db9351682cf17c49115110870147335Stephen Smalley setfscreatecon(NULL); 221e46f9d510db9351682cf17c49115110870147335Stephen Smalley } 222e46f9d510db9351682cf17c49115110870147335Stephen Smalley#endif 223e46f9d510db9351682cf17c49115110870147335Stephen Smalley} 224e46f9d510db9351682cf17c49115110870147335Stephen Smalley 225fadb85e3bd333653014df5fcc931d844dc8c3630Colin Crossstatic void add_platform_device(const char *name) 226fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross{ 227fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross int name_len = strlen(name); 228fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct listnode *node; 229fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct platform_node *bus; 230fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 231fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross list_for_each_reverse(node, &platform_names) { 232fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross bus = node_to_item(node, struct platform_node, list); 233fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross if ((bus->name_len < name_len) && 234fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross (name[bus->name_len] == '/') && 235fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross !strncmp(name, bus->name, bus->name_len)) 236fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross /* subdevice of an existing platform, ignore it */ 237fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross return; 238fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross } 239fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 240fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross INFO("adding platform device %s\n", name); 241fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 242fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross bus = calloc(1, sizeof(struct platform_node)); 243fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross bus->name = strdup(name); 244fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross bus->name_len = name_len; 245fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross list_add_tail(&platform_names, &bus->list); 246fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross} 247fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 248fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross/* 249fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross * given a name that may start with a platform device, find the length of the 250fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross * platform device prefix. If it doesn't start with a platform device, return 251fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross * 0. 252fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross */ 253fadb85e3bd333653014df5fcc931d844dc8c3630Colin Crossstatic const char *find_platform_device(const char *name) 254fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross{ 255fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross int name_len = strlen(name); 256fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct listnode *node; 257fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct platform_node *bus; 258fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 259fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross list_for_each_reverse(node, &platform_names) { 260fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross bus = node_to_item(node, struct platform_node, list); 261fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross if ((bus->name_len < name_len) && 262fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross (name[bus->name_len] == '/') && 263fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross !strncmp(name, bus->name, bus->name_len)) 264fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross return bus->name; 265fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross } 266fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 267fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross return NULL; 268fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross} 269fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 270fadb85e3bd333653014df5fcc931d844dc8c3630Colin Crossstatic void remove_platform_device(const char *name) 271fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross{ 272fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct listnode *node; 273fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross struct platform_node *bus; 274fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 275fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross list_for_each_reverse(node, &platform_names) { 276fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross bus = node_to_item(node, struct platform_node, list); 277fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross if (!strcmp(name, bus->name)) { 278fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross INFO("removing platform device %s\n", name); 279fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross free(bus->name); 280fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross list_remove(node); 281fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross free(bus); 282fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross return; 283fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross } 284fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross } 285fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross} 286fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 2871e070846f8908dff15086efa12fbba01ab7eae15Chuck Tuffli#if LOG_UEVENTS 2884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic inline suseconds_t get_usecs(void) 2904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 2914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct timeval tv; 2924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project gettimeofday(&tv, 0); 2934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return tv.tv_sec * (suseconds_t) 1000000 + tv.tv_usec; 2944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 2954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define log_event_print(x...) INFO(x) 2974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 2984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#else 2994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define log_event_print(fmt, args...) do { } while (0) 3014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define get_usecs() 0 3024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#endif 3044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void parse_event(const char *msg, struct uevent *uevent) 3064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 3074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action = ""; 3084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path = ""; 3094f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->subsystem = ""; 3104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware = ""; 3114f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->major = -1; 3124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->minor = -1; 313b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_name = NULL; 314b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_num = -1; 315f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong uevent->device_name = NULL; 3164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* currently ignoring SEQNUM */ 3184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while(*msg) { 3194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!strncmp(msg, "ACTION=", 7)) { 3204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 7; 3214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action = msg; 3224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "DEVPATH=", 8)) { 3234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 8; 3244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->path = msg; 3254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "SUBSYSTEM=", 10)) { 3264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 10; 3274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->subsystem = msg; 3284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "FIRMWARE=", 9)) { 3294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 9; 3304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware = msg; 3314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "MAJOR=", 6)) { 3324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 6; 3334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->major = atoi(msg); 3344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } else if(!strncmp(msg, "MINOR=", 6)) { 3354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg += 6; 3364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->minor = atoi(msg); 337b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } else if(!strncmp(msg, "PARTN=", 6)) { 338b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross msg += 6; 339b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_num = atoi(msg); 340b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } else if(!strncmp(msg, "PARTNAME=", 9)) { 341b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross msg += 9; 342b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross uevent->partition_name = msg; 343f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong } else if(!strncmp(msg, "DEVNAME=", 8)) { 344f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong msg += 8; 345f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong uevent->device_name = msg; 3464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 348f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong /* advance to after the next \0 */ 3494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while(*msg++) 3504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ; 3514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 3524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 3534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project log_event_print("event { '%s', '%s', '%s', '%s', %d, %d }\n", 3544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->action, uevent->path, uevent->subsystem, 3554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project uevent->firmware, uevent->major, uevent->minor); 3564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 3574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 358d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Gobystatic char **get_character_device_symlinks(struct uevent *uevent) 359d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby{ 360d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby const char *parent; 361d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby char *slash; 362d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby char **links; 363d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby int link_num = 0; 364d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby int width; 365d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 366d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (strncmp(uevent->path, "/devices/platform/", 18)) 367d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby return NULL; 368d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 369d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby links = malloc(sizeof(char *) * 2); 370d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (!links) 371d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby return NULL; 372d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby memset(links, 0, sizeof(char *) * 2); 373d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 374d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby /* skip "/devices/platform/<driver>" */ 375d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby parent = strchr(uevent->path + 18, '/'); 376d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (!*parent) 377d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby goto err; 378d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 379d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (!strncmp(parent, "/usb", 4)) { 380d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby /* skip root hub name and device. use device interface */ 381d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby while (*++parent && *parent != '/'); 382d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (*parent) 383d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby while (*++parent && *parent != '/'); 384d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (!*parent) 385d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby goto err; 386d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby slash = strchr(++parent, '/'); 387d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (!slash) 388d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby goto err; 389d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby width = slash - parent; 390d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (width <= 0) 391d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby goto err; 392d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 393d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby if (asprintf(&links[link_num], "/dev/usb/%s%.*s", uevent->subsystem, width, parent) > 0) 394d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby link_num++; 395d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby else 396d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby links[link_num] = NULL; 397d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby mkdir("/dev/usb", 0755); 398d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby } 399d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby else { 400d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby goto err; 401d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby } 402d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 403d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby return links; 404d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Gobyerr: 405d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby free(links); 406d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby return NULL; 407d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby} 408d2278638d6b37717b51d622929eb4c8f6e16cb0cBenoit Goby 409b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crossstatic char **parse_platform_block_device(struct uevent *uevent) 410b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross{ 411fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross const char *device; 412b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross const char *path; 413b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *slash; 414b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int width; 415b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char buf[256]; 416b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char link_path[256]; 417b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int fd; 418b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int link_num = 0; 419b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int ret; 420b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char *p; 421b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross unsigned int size; 422b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross struct stat info; 423b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 424b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross char **links = malloc(sizeof(char *) * 4); 425b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (!links) 426b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return NULL; 427b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross memset(links, 0, sizeof(char *) * 4); 428b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 429b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross /* Drop "/devices/platform/" */ 430b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross path = uevent->path; 431fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross device = path + 18; 432fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross device = find_platform_device(device); 433fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross if (!device) 434b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross goto err; 435b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 436fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross INFO("found platform device %s\n", device); 437fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 438fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross snprintf(link_path, sizeof(link_path), "/dev/block/platform/%s", device); 439b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 440b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (uevent->partition_name) { 441b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross p = strdup(uevent->partition_name); 442b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross sanitize(p); 443b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/by-name/%s", link_path, p) > 0) 444b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 445b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 446b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 447b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(p); 448b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 449b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 450b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (uevent->partition_num >= 0) { 451b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/by-num/p%d", link_path, uevent->partition_num) > 0) 452b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 453b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 454b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 455b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 456b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 457b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross slash = strrchr(path, '/'); 458b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (asprintf(&links[link_num], "%s/%s", link_path, slash + 1) > 0) 459b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross link_num++; 460b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross else 461b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross links[link_num] = NULL; 462b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 463b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return links; 464b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 465b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Crosserr: 466b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links); 467b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross return NULL; 468b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross} 469b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 470eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Crossstatic void handle_device(const char *action, const char *devpath, 471eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross const char *path, int block, int major, int minor, char **links) 4724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 473b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross int i; 4744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 475eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if(!strcmp(action, "add")) { 476eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross make_device(devpath, path, block, major, minor); 477b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 478b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 479b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross make_link(devpath, links[i]); 480b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 4814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 483eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if(!strcmp(action, "remove")) { 484b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 485b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 486b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross remove_link(devpath, links[i]); 487b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 4884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project unlink(devpath); 489b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross } 490b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross 491b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross if (links) { 492b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross for (i = 0; links[i]; i++) 493b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links[i]); 494b0ab94b7d5a888f0b6920b156e5c6a075fa0741aColin Cross free(links); 4954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 4964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 4974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 498fadb85e3bd333653014df5fcc931d844dc8c3630Colin Crossstatic void handle_platform_device_event(struct uevent *uevent) 499fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross{ 500fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross const char *name = uevent->path + 18; /* length of /devices/platform/ */ 501fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 502fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross if (!strcmp(uevent->action, "add")) 503fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross add_platform_device(name); 504fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross else if (!strcmp(uevent->action, "remove")) 505fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross remove_platform_device(name); 506fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross} 507fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross 508eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Crossstatic const char *parse_device_name(struct uevent *uevent, unsigned int len) 509eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross{ 510eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross const char *name; 511eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 512eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross /* if it's not a /dev device, nothing else to do */ 513eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if((uevent->major < 0) || (uevent->minor < 0)) 514eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return NULL; 515eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 516eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross /* do we have a name? */ 517eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross name = strrchr(uevent->path, '/'); 518eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if(!name) 519eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return NULL; 520eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross name++; 521eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 522eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross /* too-long names would overrun our buffer */ 523eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if(strlen(name) > len) 524eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return NULL; 525eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 526eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return name; 527eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross} 528eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 529eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Crossstatic void handle_block_device_event(struct uevent *uevent) 530eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross{ 531eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross const char *base = "/dev/block/"; 532eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross const char *name; 533eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross char devpath[96]; 534eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross char **links = NULL; 535eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 536eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross name = parse_device_name(uevent, 64); 537eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!name) 538eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return; 539eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 540eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross snprintf(devpath, sizeof(devpath), "%s%s", base, name); 541e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 542eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 543eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!strncmp(uevent->path, "/devices/platform/", 18)) 544eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross links = parse_platform_block_device(uevent); 545eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 546eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross handle_device(uevent->action, devpath, uevent->path, 1, 547eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross uevent->major, uevent->minor, links); 548eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross} 549eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 550eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Crossstatic void handle_generic_device_event(struct uevent *uevent) 551eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross{ 552eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross char *base; 553eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross const char *name; 554eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross char devpath[96] = {0}; 555eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross char **links = NULL; 556eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 557eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross name = parse_device_name(uevent, 64); 558eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!name) 559eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return; 560eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 561eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!strncmp(uevent->subsystem, "usb", 3)) { 562eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!strcmp(uevent->subsystem, "usb")) { 563f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong if (uevent->device_name) { 564f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong /* 565f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong * create device node provided by kernel if present 566f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong * see drivers/base/core.c 567f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong */ 568f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong char *p = devpath; 569f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong snprintf(devpath, sizeof(devpath), "/dev/%s", uevent->device_name); 570f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong /* skip leading /dev/ */ 571f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong p += 5; 572f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong /* build directories */ 573f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong while (*p) { 574f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong if (*p == '/') { 575f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong *p = 0; 576f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong make_dir(devpath, 0755); 577f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong *p = '/'; 578f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong } 579f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong p++; 580f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong } 581f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong } 582f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong else { 583f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong /* This imitates the file system that would be created 584f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong * if we were using devfs instead. 585f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong * Minors are broken up into groups of 128, starting at "001" 586f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong */ 587f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong int bus_id = uevent->minor / 128 + 1; 588f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong int device_id = uevent->minor % 128 + 1; 589f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong /* build directories */ 590f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong make_dir("/dev/bus", 0755); 591f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong make_dir("/dev/bus/usb", 0755); 592f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong snprintf(devpath, sizeof(devpath), "/dev/bus/usb/%03d", bus_id); 593f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong make_dir(devpath, 0755); 594f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong snprintf(devpath, sizeof(devpath), "/dev/bus/usb/%03d/%03d", bus_id, device_id); 595f97b887848cc64e7d88d27f198b7721c9f2f8ec8Wei Zhong } 596eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else { 597eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross /* ignore other USB events */ 598eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross return; 599eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } 600eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if (!strncmp(uevent->subsystem, "graphics", 8)) { 601eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/graphics/"; 602e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 603e6f8d45da8c61d67dc9fdc1cec53f40594043817Lukasz Anaczkowski } else if (!strncmp(uevent->subsystem, "drm", 3)) { 604e6f8d45da8c61d67dc9fdc1cec53f40594043817Lukasz Anaczkowski base = "/dev/dri/"; 605e6f8d45da8c61d67dc9fdc1cec53f40594043817Lukasz Anaczkowski make_dir(base, 0755); 606eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if (!strncmp(uevent->subsystem, "oncrpc", 6)) { 607eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/oncrpc/"; 608e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 609eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if (!strncmp(uevent->subsystem, "adsp", 4)) { 610eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/adsp/"; 611e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 612eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if (!strncmp(uevent->subsystem, "msm_camera", 10)) { 613eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/msm_camera/"; 614e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 615eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if(!strncmp(uevent->subsystem, "input", 5)) { 616eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/input/"; 617e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 618eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if(!strncmp(uevent->subsystem, "mtd", 3)) { 619eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/mtd/"; 620e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 621eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if(!strncmp(uevent->subsystem, "sound", 5)) { 622eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/snd/"; 623e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 624eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else if(!strncmp(uevent->subsystem, "misc", 4) && 625eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross !strncmp(name, "log_", 4)) { 626eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/log/"; 627e46f9d510db9351682cf17c49115110870147335Stephen Smalley make_dir(base, 0755); 628eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross name += 4; 629eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else 630eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross base = "/dev/"; 631eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross links = get_character_device_symlinks(uevent); 632eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 633eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!devpath[0]) 634eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross snprintf(devpath, sizeof(devpath), "%s%s", base, name); 635eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 636eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross handle_device(uevent->action, devpath, uevent->path, 0, 637eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross uevent->major, uevent->minor, links); 638eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross} 639eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 640eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Crossstatic void handle_device_event(struct uevent *uevent) 641eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross{ 642308bc52d33afa1b7b470e14fa8478045456cbb20Colin Cross if (!strcmp(uevent->action,"add") || !strcmp(uevent->action, "change")) 643eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross fixup_sys_perms(uevent->path); 644eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 645eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross if (!strncmp(uevent->subsystem, "block", 5)) { 646eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross handle_block_device_event(uevent); 647fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross } else if (!strncmp(uevent->subsystem, "platform", 8)) { 648fadb85e3bd333653014df5fcc931d844dc8c3630Colin Cross handle_platform_device_event(uevent); 649eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } else { 650eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross handle_generic_device_event(uevent); 651eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross } 652eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross} 653eb5ba8306522acdbf3a63ca847e5e6b990d842b9Colin Cross 6544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic int load_firmware(int fw_fd, int loading_fd, int data_fd) 6554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 6564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct stat st; 6574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project long len_to_copy; 6584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int ret = 0; 6594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fstat(fw_fd, &st) < 0) 6614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return -1; 6624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project len_to_copy = st.st_size; 6634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "1", 1); /* start transfer */ 6654f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while (len_to_copy > 0) { 6674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project char buf[PAGE_SIZE]; 6684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ssize_t nr; 6694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nr = read(fw_fd, buf, sizeof(buf)); 6714f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!nr) 6724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project break; 6734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(nr < 0) { 6744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ret = -1; 6754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project break; 6764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project len_to_copy -= nr; 6794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while (nr > 0) { 6804f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ssize_t nw = 0; 6814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nw = write(data_fd, buf + nw, nr); 6834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(nw <= 0) { 6844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project ret = -1; 6854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto out; 6864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project nr -= nw; 6884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 6904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectout: 6924f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!ret) 6934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "0", 1); /* successful end of transfer */ 6944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else 6954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(loading_fd, "-1", 2); /* abort transfer */ 6964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 6974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return ret; 6984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 6994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7008d48c8e45724c7103f0ace7885d339e49399908bBrian Swetlandstatic int is_booting(void) 7018d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland{ 7028d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland return access("/dev/.booting", F_OK) == 0; 7038d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland} 7048d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland 7054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void process_firmware_event(struct uevent *uevent) 7064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 707029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev char *root, *loading, *data, *file1 = NULL, *file2 = NULL, *file3 = NULL; 7084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int l, loading_fd, data_fd, fw_fd; 7098d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland int booting = is_booting(); 7104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7118d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland INFO("firmware: loading '%s' for '%s'\n", 7128d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland uevent->firmware, uevent->path); 7134f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7144f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&root, SYSFS_PREFIX"%s/", uevent->path); 7154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 7164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 7174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&loading, "%sloading", root); 7194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 7204f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto root_free_out; 7214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project l = asprintf(&data, "%sdata", root); 7234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 7244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto loading_free_out; 7254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 72602863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland l = asprintf(&file1, FIRMWARE_DIR1"/%s", uevent->firmware); 72702863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland if (l == -1) 72802863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland goto data_free_out; 72902863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland 73002863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland l = asprintf(&file2, FIRMWARE_DIR2"/%s", uevent->firmware); 7314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (l == -1) 7324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto data_free_out; 7334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 734029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev l = asprintf(&file3, FIRMWARE_DIR3"/%s", uevent->firmware); 735029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev if (l == -1) 736029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev goto data_free_out; 737029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev 7384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project loading_fd = open(loading, O_WRONLY); 7394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(loading_fd < 0) 7404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto file_free_out; 7414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project data_fd = open(data, O_WRONLY); 7434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(data_fd < 0) 7444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project goto loading_close_out; 7454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7468d48c8e45724c7103f0ace7885d339e49399908bBrian Swetlandtry_loading_again: 74702863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland fw_fd = open(file1, O_RDONLY); 74802863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland if(fw_fd < 0) { 74902863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland fw_fd = open(file2, O_RDONLY); 750609d8828d3b8266a80606bf902d1294296962cf3Benoit Goby if (fw_fd < 0) { 751029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev fw_fd = open(file3, O_RDONLY); 752029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev if (fw_fd < 0) { 753029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev if (booting) { 754029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev /* If we're not fully booted, we may be missing 755029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev * filesystems needed for firmware, wait and retry. 756029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev */ 757029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev usleep(100000); 758029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev booting = is_booting(); 759029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev goto try_loading_again; 760029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev } 761029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev INFO("firmware: could not open '%s' %d\n", uevent->firmware, errno); 762029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev write(loading_fd, "-1", 2); 763029d44e6aef334d2f0f03cbc9a5609cddc1b23e3Iliyan Malchev goto data_close_out; 7648d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland } 765609d8828d3b8266a80606bf902d1294296962cf3Benoit Goby } 76602863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland } 7674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(!load_firmware(fw_fd, loading_fd, data_fd)) 7698d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland INFO("firmware: copy success { '%s', '%s' }\n", root, uevent->firmware); 7704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else 7718d48c8e45724c7103f0ace7885d339e49399908bBrian Swetland INFO("firmware: copy failure { '%s', '%s' }\n", root, uevent->firmware); 7724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fw_fd); 7744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectdata_close_out: 7754f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(data_fd); 7764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectloading_close_out: 7774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(loading_fd); 7784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectfile_free_out: 77902863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland free(file1); 78002863b957cfbfc302d3136ed78c0cba86accacd8Brian Swetland free(file2); 7814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectdata_free_out: 7824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(data); 7834f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectloading_free_out: 7844f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(loading); 7854f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectroot_free_out: 7864f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project free(root); 7874f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 7884f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7894f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Projectstatic void handle_firmware_event(struct uevent *uevent) 7904f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 7914f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project pid_t pid; 792982a815c10cc28707d81c46112fc45b1c10df3beColin Cross int ret; 7934f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7944f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(uevent->subsystem, "firmware")) 7954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 7964f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 7974f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(strcmp(uevent->action, "add")) 7984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project return; 7994f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8004f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project /* we fork, to avoid making large memory allocations in init proper */ 8014f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project pid = fork(); 8024f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if (!pid) { 8034f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project process_firmware_event(uevent); 8044f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project exit(EXIT_SUCCESS); 8054f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 8064f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 8074f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8084f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project#define UEVENT_MSG_LEN 1024 8090dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossvoid handle_device_fd() 8104f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 8113f582e92f07d358f3d0941b86407b39e2e7e67ccVernon Tang char msg[UEVENT_MSG_LEN+2]; 8123f582e92f07d358f3d0941b86407b39e2e7e67ccVernon Tang int n; 81357de8b8f27f887ca8084671df777a4ac199ba647Nick Kralevich while ((n = uevent_kernel_multicast_recv(device_fd, msg, UEVENT_MSG_LEN)) > 0) { 8145f5d5c8cef10f28950fa108a8bd86d55f11b7ef4Nick Kralevich if(n >= UEVENT_MSG_LEN) /* overflow -- discard */ 8154f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 8164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8174f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg[n] = '\0'; 8184f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project msg[n+1] = '\0'; 8194f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8205f5d5c8cef10f28950fa108a8bd86d55f11b7ef4Nick Kralevich struct uevent uevent; 8214f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project parse_event(msg, &uevent); 8224f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8234f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project handle_device_event(&uevent); 8244f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project handle_firmware_event(&uevent); 8254f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 8264f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 8274f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8284f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project/* Coldboot walks parts of the /sys tree and pokes the uevent files 8294f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** to cause the kernel to regenerate device add events that happened 8304f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** before init's device manager was started 8314f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** 8324f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** We drain any pending events from the netlink socket every time 8334f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** we poke another uevent file to make sure we don't overrun the 8344f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project** socket's buffer. 8354f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project*/ 8364f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8370dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic void do_coldboot(DIR *d) 8384f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 8394f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project struct dirent *de; 8404f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project int dfd, fd; 8414f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8424f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project dfd = dirfd(d); 8434f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8444f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fd = openat(dfd, "uevent", O_WRONLY); 8454f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fd >= 0) { 8464f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project write(fd, "add\n", 4); 8474f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fd); 8480dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross handle_device_fd(); 8494f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 8504f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8514f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project while((de = readdir(d))) { 8524f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project DIR *d2; 8534f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8544f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(de->d_type != DT_DIR || de->d_name[0] == '.') 8554f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 8564f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8574f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY); 8584f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(fd < 0) 8594f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project continue; 8604f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8614f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project d2 = fdopendir(fd); 8624f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(d2 == 0) 8634f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project close(fd); 8644f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project else { 8650dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross do_coldboot(d2); 8664f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project closedir(d2); 8674f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 8684f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 8694f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 8704f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8710dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossstatic void coldboot(const char *path) 8724f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 8734f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project DIR *d = opendir(path); 8744f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project if(d) { 8750dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross do_coldboot(d); 8764f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project closedir(d); 8774f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project } 8784f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 8794f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8800dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossvoid device_init(void) 8814f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project{ 8824f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project suseconds_t t0, t1; 883f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross struct stat info; 884f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross int fd; 885e46f9d510db9351682cf17c49115110870147335Stephen Smalley#ifdef HAVE_SELINUX 886ae6f3d7c05070f7e0e56fe0056c8923c6ee2f473Stephen Smalley sehandle = NULL; 887ae6f3d7c05070f7e0e56fe0056c8923c6ee2f473Stephen Smalley if (is_selinux_enabled() > 0) { 888ae6f3d7c05070f7e0e56fe0056c8923c6ee2f473Stephen Smalley sehandle = selinux_android_file_context_handle(); 889ae6f3d7c05070f7e0e56fe0056c8923c6ee2f473Stephen Smalley } 890e46f9d510db9351682cf17c49115110870147335Stephen Smalley#endif 8912d55e02d0f3c27f0c99ab889ab7b73126280a21cDima Zavin /* is 64K enough? udev uses 16MB! */ 8922d55e02d0f3c27f0c99ab889ab7b73126280a21cDima Zavin device_fd = uevent_open_socket(64*1024, true); 8930dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross if(device_fd < 0) 8940dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross return; 8954f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 8960dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross fcntl(device_fd, F_SETFD, FD_CLOEXEC); 8970dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross fcntl(device_fd, F_SETFL, O_NONBLOCK); 8984f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 899f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross if (stat(coldboot_done, &info) < 0) { 900f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross t0 = get_usecs(); 901f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross coldboot("/sys/class"); 902f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross coldboot("/sys/block"); 903f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross coldboot("/sys/devices"); 904f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross t1 = get_usecs(); 905f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross fd = open(coldboot_done, O_WRONLY|O_CREAT, 0000); 906f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross close(fd); 907f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross log_event_print("coldboot %ld uS\n", ((long) (t1 - t0))); 908f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } else { 909f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross log_event_print("skipping coldboot, already done\n"); 910f83d0b9af5cbe4440cc41ceaa8a7806a13c86282Colin Cross } 9110dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross} 9124f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project 9130dd7ca6e87abb689700c5e3a816a949b03b1154bColin Crossint get_device_fd() 9140dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross{ 9150dd7ca6e87abb689700c5e3a816a949b03b1154bColin Cross return device_fd; 9164f6e8d7a00cbeda1e70cc15be9c4af1018bdad5The Android Open Source Project} 917