/*
* Copyright (c) 2009-2013, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <linux/fs.h>
#include <stdlib.h>
#include <cutils/properties.h>
#include "utils.h"
#include "debug.h"
#ifndef BLKDISCARD
#define BLKDISCARD _IO(0x12,119)
#endif
#ifndef BLKSECDISCARD
#define BLKSECDISCARD _IO(0x12,125)
#endif
#define READ_BUF_SIZE (16*1024)
int get_stream_size(FILE *stream) {
int size;
fseek(stream, 0, SEEK_END);
size = ftell(stream);
fseek(stream, 0, SEEK_SET);
return size;
}
uint64_t get_block_device_size(int fd)
{
uint64_t size = 0;
int ret;
ret = ioctl(fd, BLKGETSIZE64, &size);
if (ret)
return 0;
return size;
}
uint64_t get_file_size(int fd)
{
struct stat buf;
int ret;
int64_t computed_size;
ret = fstat(fd, &buf);
if (ret)
return 0;
if (S_ISREG(buf.st_mode))
computed_size = buf.st_size;
else if (S_ISBLK(buf.st_mode))
computed_size = get_block_device_size(fd);
else
computed_size = 0;
return computed_size;
}
uint64_t get_file_size64(int fd)
{
struct stat64 buf;
int ret;
uint64_t computed_size;
ret = fstat64(fd, &buf);
if (ret)
return 0;
if (S_ISREG(buf.st_mode))
computed_size = buf.st_size;
else if (S_ISBLK(buf.st_mode))
computed_size = get_block_device_size(fd);
else
computed_size = 0;
return computed_size;
}
char *strip(char *str)
{
int n;
n = strspn(str, " \t");
str += n;
n = strcspn(str, " \t");
str[n] = '\0';
return str;
}
int wipe_block_device(int fd, int64_t len)
{
uint64_t range[2];
int ret;
range[0] = 0;
range[1] = len;
ret = ioctl(fd, BLKSECDISCARD, &range);
if (ret < 0) {
range[0] = 0;
range[1] = len;
ret = ioctl(fd, BLKDISCARD, &range);
if (ret < 0) {
D(WARN, "Discard failed\n");
return 1;
} else {
D(WARN, "Wipe via secure discard failed, used discard instead\n");
return 0;
}
}
return 0;
}
int create_temp_file() {
char tempname[] = "/dev/fastboot_data_XXXXXX";
int fd;
fd = mkstemp(tempname);
if (fd < 0)
return -1;
unlink(tempname);
return fd;
}
ssize_t bulk_write(int bulk_in, const char *buf, size_t length)
{
size_t count = 0;
ssize_t ret;
do {
ret = TEMP_FAILURE_RETRY(write(bulk_in, buf + count, length - count));
if (ret < 0) {
D(WARN, "[ bulk_write failed fd=%d length=%zu errno=%d %s ]",
bulk_in, length, errno, strerror(errno));
return -1;
} else {
count += ret;
}
} while (count < length);
D(VERBOSE, "[ bulk_write done fd=%d ]", bulk_in);
return count;
}
ssize_t bulk_read(int bulk_out, char *buf, size_t length)
{
ssize_t ret;
size_t n = 0;
while (n < length) {
size_t to_read = (length - n > READ_BUF_SIZE) ? READ_BUF_SIZE : length - n;
ret = TEMP_FAILURE_RETRY(read(bulk_out, buf + n, to_read));
if (ret < 0) {
D(WARN, "[ bulk_read failed fd=%d length=%zu errno=%d %s ]",
bulk_out, length, errno, strerror(errno));
return ret;
}
n += ret;
if (ret < (ssize_t)to_read) {
D(VERBOSE, "bulk_read short read, ret=%zd to_read=%zu n=%zu length=%zu",
ret, to_read, n, length);
break;
}
}
return n;
}
#define NAP_TIME 200 // 200 ms between polls
static int wait_for_property(const char *name, const char *desired_value, int maxwait)
{
char value[PROPERTY_VALUE_MAX] = {'\0'};
int maxnaps = (maxwait * 1000) / NAP_TIME;
if (maxnaps < 1) {
maxnaps = 1;
}
while (maxnaps-- > 0) {
usleep(NAP_TIME * 1000);
if (property_get(name, value, NULL)) {
if (desired_value == NULL || strcmp(value, desired_value) == 0) {
return 0;
}
}
}
return -1; /* failure */
}
int service_start(const char *service_name)
{
int result = 0;
char property_value[PROPERTY_VALUE_MAX];
property_get(service_name, property_value, "");
if (strcmp("running", property_value) != 0) {
D(INFO, "Starting %s", service_name);
property_set("ctl.start", service_name);
if (wait_for_property(service_name, "running", 5))
result = -1;
}
return result;
}
int service_stop(const char *service_name)
{
int result = 0;
D(INFO, "Stopping MDNSD");
property_set("ctl.stop", service_name);
if (wait_for_property(service_name, "stopped", 5))
result = -1;
return result;
}
int ssh_server_start()
{
return service_start("sshd");
}