auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 626 deletions

diff --git a/init/devices.c b/init/devices.c
deleted file mode 100644
index b1ef6ab2a..000000000
--- a/init/devices.c
+++ /dev/null
@@ -1,626 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <fcntl.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <string.h>
-
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <linux/netlink.h>
-#include <private/android_filesystem_config.h>
-#include <sys/time.h>
-#include <asm/page.h>
-
-#include "init.h"
-#include "devices.h"
-
-#define CMDLINE_PREFIX  "/dev"
-#define SYSFS_PREFIX    "/sys"
-#define FIRMWARE_DIR    "/etc/firmware"
-#define MAX_QEMU_PERM 6
-
-struct uevent {
-    const char *action;
-    const char *path;
-    const char *subsystem;
-    const char *firmware;
-    int major;
-    int minor;
-};
-
-static int open_uevent_socket(void)
-{
-    struct sockaddr_nl addr;
-    int sz = 64*1024; // XXX larger? udev uses 16MB!
-    int s;
-
-    memset(&addr, 0, sizeof(addr));
-    addr.nl_family = AF_NETLINK;
-    addr.nl_pid = getpid();
-    addr.nl_groups = 0xffffffff;
-
-    s = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
-    if(s < 0)
-        return -1;
-
-    setsockopt(s, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz));
-
-    if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-        close(s);
-        return -1;
-    }
-
-    return s;
-}
-
-struct perms_ {
-    char *name;
-    mode_t perm;
-    unsigned int uid;
-    unsigned int gid;
-    unsigned short prefix;
-};
-static struct perms_ devperms[] = {
-    { "/dev/null",          0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/zero",          0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/full",          0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/ptmx",          0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/tty",           0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/random",        0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/urandom",       0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/ashmem",        0666,   AID_ROOT,       AID_ROOT,       0 },
-    { "/dev/binder",        0666,   AID_ROOT,       AID_ROOT,       0 },
-
-	    /* logger should be world writable (for logging) but not readable */
-    { "/dev/log/",          0662,   AID_ROOT,       AID_LOG,        1 },
-
-        /* these should not be world writable */
-    { "/dev/android_adb",   0660,   AID_ADB,        AID_ADB,        0 },
-    { "/dev/android_adb_enable",   0660,   AID_ADB,        AID_ADB,        0 },
-    { "/dev/ttyMSM0",       0600,   AID_BLUETOOTH,  AID_BLUETOOTH,  0 },
-    { "/dev/ttyHS0",        0600,   AID_BLUETOOTH,  AID_BLUETOOTH,  0 },
-    { "/dev/uinput",        0600,   AID_BLUETOOTH,  AID_BLUETOOTH,  0 },
-    { "/dev/alarm",         0664,   AID_SYSTEM,     AID_RADIO,      0 },
-    { "/dev/tty0",          0660,   AID_ROOT,       AID_SYSTEM,     0 },
-    { "/dev/graphics/",     0660,   AID_ROOT,       AID_GRAPHICS,   1 },
-    { "/dev/hw3d",          0660,   AID_SYSTEM,     AID_GRAPHICS,   0 },
-    { "/dev/input/",        0660,   AID_ROOT,       AID_INPUT,      1 },
-    { "/dev/eac",           0660,   AID_ROOT,       AID_AUDIO,      0 },
-    { "/dev/cam",           0660,   AID_ROOT,       AID_CAMERA,     0 },
-    { "/dev/pmem",          0660,   AID_SYSTEM,     AID_GRAPHICS,   0 },
-    { "/dev/pmem_gpu",      0660,   AID_SYSTEM,     AID_GRAPHICS,   1 },
-    { "/dev/pmem_adsp",     0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/pmem_camera",   0660,   AID_SYSTEM,     AID_CAMERA,     1 },
-    { "/dev/oncrpc/",       0660,   AID_ROOT,       AID_SYSTEM,     1 },
-    { "/dev/adsp/",         0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/mt9t013",       0660,   AID_SYSTEM,     AID_SYSTEM,     0 },
-    { "/dev/akm8976_daemon",0640,   AID_COMPASS,    AID_SYSTEM,     0 },
-    { "/dev/akm8976_aot",   0640,   AID_COMPASS,    AID_SYSTEM,     0 },
-    { "/dev/akm8976_pffd",  0640,   AID_COMPASS,    AID_SYSTEM,     0 },
-    { "/dev/msm_pcm_out",   0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/msm_pcm_in",    0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/msm_pcm_ctl",   0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/msm_snd",       0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/msm_mp3",       0660,   AID_SYSTEM,     AID_AUDIO,      1 },
-    { "/dev/msm_audpre",    0660,   AID_SYSTEM,     AID_AUDIO,      0 },
-    { "/dev/htc-acoustic",  0660,   AID_SYSTEM,     AID_AUDIO,      0 },
-    { "/dev/smd0",          0640,   AID_RADIO,      AID_RADIO,      0 },
-    { "/dev/qmi",           0640,   AID_RADIO,      AID_RADIO,      0 },
-    { "/dev/qmi0",          0640,   AID_RADIO,      AID_RADIO,      0 },
-    { "/dev/qmi1",          0640,   AID_RADIO,      AID_RADIO,      0 },
-    { "/dev/qmi2",          0640,   AID_RADIO,      AID_RADIO,      0 },
-    { NULL, 0, 0, 0, 0 },
-};
-
-/* devperms_partners list and perm_node are for hardware specific /dev entries */
-struct perm_node {
-    struct perms_ dp;
-    struct listnode plist;
-};
-list_declare(devperms_partners);
-
-/*
- * Permission override when in emulator mode, must be parsed before
- * system properties is initalized.
- */
-static int qemu_perm_count;
-static struct perms_ qemu_perms[MAX_QEMU_PERM + 1];
-
-int add_devperms_partners(const char *name, mode_t perm, unsigned int uid,
-                        unsigned int gid, unsigned short prefix) {
-    int size;
-    struct perm_node *node = malloc(sizeof (struct perm_node));
-    if (!node)
-        return -ENOMEM;
-
-    size = strlen(name) + 1;
-    if ((node->dp.name = malloc(size)) == NULL)
-        return -ENOMEM;
-
-    memcpy(node->dp.name, name, size);
-    node->dp.perm = perm;
-    node->dp.uid = uid;
-    node->dp.gid = gid;
-    node->dp.prefix = prefix;
-
-    list_add_tail(&devperms_partners, &node->plist);
-    return 0;
-}
-
-void qemu_init(void) {
-    qemu_perm_count = 0;
-    memset(&qemu_perms, 0, sizeof(qemu_perms));
-}
-
-static int qemu_perm(const char* name, mode_t perm, unsigned int uid,
-                         unsigned int gid, unsigned short prefix)
-{
-    char *buf;
-    if (qemu_perm_count == MAX_QEMU_PERM)
-        return -ENOSPC;
-
-    buf = malloc(strlen(name) + 1);
-    if (!buf)
-        return -errno;
-
-    strlcpy(buf, name, strlen(name) + 1);
-    qemu_perms[qemu_perm_count].name = buf;
-    qemu_perms[qemu_perm_count].perm = perm;
-    qemu_perms[qemu_perm_count].uid = uid;
-    qemu_perms[qemu_perm_count].gid = gid;
-    qemu_perms[qemu_perm_count].prefix = prefix;
-
-    qemu_perm_count++;
-    return 0;
-}
-
-/* Permission overrides for emulator that are parsed from /proc/cmdline. */
-void qemu_cmdline(const char* name, const char *value)
-{
-    char *buf;
-    if (!strcmp(name, "android.ril")) {
-        /* cmd line params currently assume /dev/ prefix */
-        if (asprintf(&buf, CMDLINE_PREFIX"/%s", value) == -1) {
-            return;
-        }
-        INFO("nani- buf:: %s\n", buf);
-        qemu_perm(buf, 0660, AID_RADIO, AID_ROOT, 0);
-    }
-}
-
-static int get_device_perm_inner(struct perms_ *perms, const char *path,
-                                    unsigned *uid, unsigned *gid, mode_t *perm)
-{
-    int i;
-    for(i = 0; perms[i].name; i++) {
-
-        if(perms[i].prefix) {
-            if(strncmp(path, perms[i].name, strlen(perms[i].name)))
-                continue;
-        } else {
-            if(strcmp(path, perms[i].name))
-                continue;
-        }
-        *uid = perms[i].uid;
-        *gid = perms[i].gid;
-        *perm = perms[i].perm;
-        return 0;
-    }
-    return -1;
-}
-
-/* First checks for emulator specific permissions specified in /proc/cmdline. */
-static mode_t get_device_perm(const char *path, unsigned *uid, unsigned *gid)
-{
-    mode_t perm;
-
-    if (get_device_perm_inner(qemu_perms, path, uid, gid, &perm) == 0) {
-        return perm;
-    } else if (get_device_perm_inner(devperms, path, uid, gid, &perm) == 0) {
-        return perm;
-    } else {
-        struct listnode *node;
-        struct perm_node *perm_node;
-        struct perms_ *dp;
-
-        /* Check partners list. */
-        list_for_each(node, &devperms_partners) {
-            perm_node = node_to_item(node, struct perm_node, plist);
-            dp = &perm_node->dp;
-
-            if (dp->prefix) {
-                if (strncmp(path, dp->name, strlen(dp->name)))
-                    continue;
-            } else {
-                if (strcmp(path, dp->name))
-                    continue;
-            }
-            /* Found perm in partner list. */
-            *uid = dp->uid;
-            *gid = dp->gid;
-            return dp->perm;
-        }
-        /* Default if nothing found. */
-        *uid = 0;
-        *gid = 0;
-        return 0600;
-    }
-}
-
-static void make_device(const char *path, int block, int major, int minor)
-{
-    unsigned uid;
-    unsigned gid;
-    mode_t mode;
-    dev_t dev;
-
-    if(major > 255 || minor > 255)
-        return;
-
-    mode = get_device_perm(path, &uid, &gid) | (block ? S_IFBLK : S_IFCHR);
-    dev = (major << 8) | minor;
-    mknod(path, mode, dev);
-    chown(path, uid, gid);
-}
-
-#ifdef LOG_UEVENTS
-
-static inline suseconds_t get_usecs(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv, 0);
-    return tv.tv_sec * (suseconds_t) 1000000 + tv.tv_usec;
-}
-
-#define log_event_print(x...) INFO(x)
-
-#else
-
-#define log_event_print(fmt, args...)   do { } while (0)
-#define get_usecs()                     0
-
-#endif
-
-static void parse_event(const char *msg, struct uevent *uevent)
-{
-    uevent->action = "";
-    uevent->path = "";
-    uevent->subsystem = "";
-    uevent->firmware = "";
-    uevent->major = -1;
-    uevent->minor = -1;
-
-        /* currently ignoring SEQNUM */
-    while(*msg) {
-        if(!strncmp(msg, "ACTION=", 7)) {
-            msg += 7;
-            uevent->action = msg;
-        } else if(!strncmp(msg, "DEVPATH=", 8)) {
-            msg += 8;
-            uevent->path = msg;
-        } else if(!strncmp(msg, "SUBSYSTEM=", 10)) {
-            msg += 10;
-            uevent->subsystem = msg;
-        } else if(!strncmp(msg, "FIRMWARE=", 9)) {
-            msg += 9;
-            uevent->firmware = msg;
-        } else if(!strncmp(msg, "MAJOR=", 6)) {
-            msg += 6;
-            uevent->major = atoi(msg);
-        } else if(!strncmp(msg, "MINOR=", 6)) {
-            msg += 6;
-            uevent->minor = atoi(msg);
-        }
-
-            /* advance to after the next \0 */
-        while(*msg++)
-            ;
-    }
-
-    log_event_print("event { '%s', '%s', '%s', '%s', %d, %d }\n",
-                    uevent->action, uevent->path, uevent->subsystem,
-                    uevent->firmware, uevent->major, uevent->minor);
-}
-
-static void handle_device_event(struct uevent *uevent)
-{
-    char devpath[96];
-    char *base, *name;
-    int block;
-
-        /* if it's not a /dev device, nothing to do */
-    if((uevent->major < 0) || (uevent->minor < 0))
-        return;
-
-        /* do we have a name? */
-    name = strrchr(uevent->path, '/');
-    if(!name)
-        return;
-    name++;
-
-        /* too-long names would overrun our buffer */
-    if(strlen(name) > 64)
-        return;
-
-        /* are we block or char? where should we live? */
-    if(!strncmp(uevent->subsystem, "block", 5)) {
-        block = 1;
-        base = "/dev/block/";
-        mkdir(base, 0755);
-    } else {
-        block = 0;
-            /* this should probably be configurable somehow */
-        if(!strncmp(uevent->subsystem, "graphics", 8)) {
-            base = "/dev/graphics/";
-            mkdir(base, 0755);
-        } else if (!strncmp(uevent->subsystem, "oncrpc", 6)) {
-            base = "/dev/oncrpc/";
-            mkdir(base, 0755);
-        } else if (!strncmp(uevent->subsystem, "adsp", 4)) {
-            base = "/dev/adsp/";
-            mkdir(base, 0755);
-      } else if(!strncmp(uevent->subsystem, "input", 5)) {
-            base = "/dev/input/";
-            mkdir(base, 0755);
-        } else if(!strncmp(uevent->subsystem, "mtd", 3)) {
-            base = "/dev/mtd/";
-            mkdir(base, 0755);
-        } else if(!strncmp(uevent->subsystem, "misc", 4) &&
-                    !strncmp(name, "log_", 4)) {
-            base = "/dev/log/";
-            mkdir(base, 0755);
-            name += 4;
-        } else
-            base = "/dev/";
-    }
-
-    snprintf(devpath, sizeof(devpath), "%s%s", base, name);
-
-    if(!strcmp(uevent->action, "add")) {
-        make_device(devpath, block, uevent->major, uevent->minor);
-        return;
-    }
-
-    if(!strcmp(uevent->action, "remove")) {
-        unlink(devpath);
-        return;
-    }
-}
-
-static int load_firmware(int fw_fd, int loading_fd, int data_fd)
-{
-    struct stat st;
-    long len_to_copy;
-    int ret = 0;
-
-    if(fstat(fw_fd, &st) < 0)
-        return -1;
-    len_to_copy = st.st_size;
-
-    write(loading_fd, "1", 1);  /* start transfer */
-
-    while (len_to_copy > 0) {
-        char buf[PAGE_SIZE];
-        ssize_t nr;
-
-        nr = read(fw_fd, buf, sizeof(buf));
-        if(!nr)
-            break;
-        if(nr < 0) {
-            ret = -1;
-            break;
-        }
-
-        len_to_copy -= nr;
-        while (nr > 0) {
-            ssize_t nw = 0;
-
-            nw = write(data_fd, buf + nw, nr);
-            if(nw <= 0) {
-                ret = -1;
-                goto out;
-            }
-            nr -= nw;
-        }
-    }
-
-out:
-    if(!ret)
-        write(loading_fd, "0", 1);  /* successful end of transfer */
-    else
-        write(loading_fd, "-1", 2); /* abort transfer */
-
-    return ret;
-}
-
-static void process_firmware_event(struct uevent *uevent)
-{
-    char *root, *loading, *data, *file;
-    int l, loading_fd, data_fd, fw_fd;
-
-    log_event_print("firmware event { '%s', '%s' }\n",
-                    uevent->path, uevent->firmware);
-
-    l = asprintf(&root, SYSFS_PREFIX"%s/", uevent->path);
-    if (l == -1)
-        return;
-
-    l = asprintf(&loading, "%sloading", root);
-    if (l == -1)
-        goto root_free_out;
-
-    l = asprintf(&data, "%sdata", root);
-    if (l == -1)
-        goto loading_free_out;
-
-    l = asprintf(&file, FIRMWARE_DIR"/%s", uevent->firmware);
-    if (l == -1)
-        goto data_free_out;
-
-    loading_fd = open(loading, O_WRONLY);
-    if(loading_fd < 0)
-        goto file_free_out;
-
-    data_fd = open(data, O_WRONLY);
-    if(data_fd < 0)
-        goto loading_close_out;
-
-    fw_fd = open(file, O_RDONLY);
-    if(fw_fd < 0)
-        goto data_close_out;
-
-    if(!load_firmware(fw_fd, loading_fd, data_fd))
-        log_event_print("firmware copy success { '%s', '%s' }\n", root, file);
-    else
-        log_event_print("firmware copy failure { '%s', '%s' }\n", root, file);
-
-    close(fw_fd);
-data_close_out:
-    close(data_fd);
-loading_close_out:
-    close(loading_fd);
-file_free_out:
-    free(file);
-data_free_out:
-    free(data);
-loading_free_out:
-    free(loading);
-root_free_out:
-    free(root);
-}
-
-static void handle_firmware_event(struct uevent *uevent)
-{
-    pid_t pid;
-
-    if(strcmp(uevent->subsystem, "firmware"))
-        return;
-
-    if(strcmp(uevent->action, "add"))
-        return;
-
-    /* we fork, to avoid making large memory allocations in init proper */
-    pid = fork();
-    if (!pid) {
-        process_firmware_event(uevent);
-        exit(EXIT_SUCCESS);
-    }
-}
-
-#define UEVENT_MSG_LEN  1024
-void handle_device_fd(int fd)
-{
-    char msg[UEVENT_MSG_LEN+2];
-    int n;
-
-    while((n = recv(fd, msg, UEVENT_MSG_LEN, 0)) > 0) {
-        struct uevent uevent;
-
-        if(n == UEVENT_MSG_LEN)   /* overflow -- discard */
-            continue;
-
-        msg[n] = '\0';
-        msg[n+1] = '\0';
-
-        parse_event(msg, &uevent);
-
-        handle_device_event(&uevent);
-        handle_firmware_event(&uevent);
-    }
-}
-
-/* Coldboot walks parts of the /sys tree and pokes the uevent files
-** to cause the kernel to regenerate device add events that happened
-** before init's device manager was started
-**
-** We drain any pending events from the netlink socket every time
-** we poke another uevent file to make sure we don't overrun the
-** socket's buffer.  
-*/
-
-static void do_coldboot(int event_fd, DIR *d)
-{
-    struct dirent *de;
-    int dfd, fd;
-
-    dfd = dirfd(d);
-
-    fd = openat(dfd, "uevent", O_WRONLY);
-    if(fd >= 0) {
-        write(fd, "add\n", 4);
-        close(fd);
-        handle_device_fd(event_fd);
-    }
-
-    while((de = readdir(d))) {
-        DIR *d2;
-
-        if(de->d_type != DT_DIR || de->d_name[0] == '.')
-            continue;
-
-        fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
-        if(fd < 0)
-            continue;
-
-        d2 = fdopendir(fd);
-        if(d2 == 0)
-            close(fd);
-        else {
-            do_coldboot(event_fd, d2);
-            closedir(d2);
-        }
-    }
-}
-
-static void coldboot(int event_fd, const char *path)
-{
-    DIR *d = opendir(path);
-    if(d) {
-        do_coldboot(event_fd, d);
-        closedir(d);
-    }
-}
-
-int device_init(void)
-{
-    suseconds_t t0, t1;
-    int fd;
-
-    fd = open_uevent_socket();
-    if(fd < 0)
-        return -1;
-
-    fcntl(fd, F_SETFD, FD_CLOEXEC);
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-
-    t0 = get_usecs();
-    coldboot(fd, "/sys/class");
-    coldboot(fd, "/sys/block");
-    coldboot(fd, "/sys/devices");
-    t1 = get_usecs();
-
-    log_event_print("coldboot %ld uS\n", ((long) (t1 - t0)));
-
-    return fd;
-}