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adbfs.cpp
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adbfs.cpp
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/*
@file
@author Calvin Tee (collectskin.com)
@author Sudarshan S. Chawathe (eip10.org)
@version 0.1
@section License
BSD; see comments in main source files for details.
@section Description
A FUSE-based filesystem using the Android ADB interface.
@mainpage
adbFS: A FUSE-based filesystem using the Android ADB interface.
Usage: To mount use
@code adbfs mountpoint @endcode
where mountpoint is a suitable directory. To unmount, use
@code fusermount -u mountpoint @endcode
as usual for FUSE.
The above assumes you have a fairly standard Android development
setup, with adb in the path, busybox available on the Android
device, etc. Everything is very lightly tested and a work in
progress. Read the source and use with caution.
*/
/*
* Software License Agreement (BSD License)
*
* Copyright (c) 2010-2011, Calvin Tee (collectskin.com)
*
* 2011-12-25 Updated by Sudarshan S. Chawathe (chaw@eip10.org).
* Fixed some problems due to filenames with spaces.
* Added comments and miscellaneous small changes.
*
* 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 the 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.
*/
#define FUSE_USE_VERSION 26
#include "utils.h"
#include <unistd.h>
#include<stddef.h>
#include <execinfo.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
void handler(int sig) {
void *array[10];
size_t size;
// get void*'s for all entries on the stack
size = backtrace(array, 10);
// print out all the frames to stderr
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, 2);
exit(1);
}
using namespace std;
void shell_escape_command(string&);
void adb_shell_escape_command(string&);
queue<string> adb_push(const string&, const string&);
queue<string> adb_pull(const string&, const string&);
queue<string> adb_shell(const string&, bool);
queue<string> shell(const string&);
static const char PERMISSION_ERR_MSG[] = ": Permission denied";
string tempDirPath;
map<string,fileCache> fileData;
void invalidateCache(const string& path) {
cout << "invalidate cache " << path << endl;
map<string, fileCache>::iterator it = fileData.find(path);
if (it != fileData.end())
fileData.erase(it);
}
map<int,bool> filePendingWrite;
map<string,bool> fileTruncated;
/**
Custom options
*/
struct adb_config {
bool rescan;
};
static struct fuse_opt adb_opts[] = {
{ "rescan", offsetof(struct adb_config, rescan), true },
FUSE_OPT_END
};
static struct adb_config adbfs_conf;
/**
Return the result of executing the given command string, using
exec_command, on the local host.
@param command the command to execute.
@see exec_command.
*/
queue<string> shell(const string& command)
{
string actual_command;
actual_command.assign(command);
//shell_escape_command(actual_command);
return exec_command(actual_command);
}
/**
Return the result of executing the given command on the Android
device using adb.
The given string command is prefixed with "adb shell " to
yield the adb command line.
@param command the command to execute.
@see exec_command.
@todo perhaps avoid use of local shell to simplify escaping.
*/
queue<string> adb_shell(const string& command, bool getStderr = false)
{
string actual_command;
actual_command.assign(command);
//adb_shell_escape_command(actual_command);
actual_command.insert(0, "adb shell \"");
actual_command.append("\"");
if (getStderr) actual_command.append(" 2>&1");
return exec_command(actual_command);
}
/**
Modify, in place, the given string by escaping characters that are
special to the shell.
@param cmd the string to be escaped.
@see adb_shell_escape_command.
@todo check/simplify escaping.
*/
void shell_escape_command(string& cmd)
{
string_replacer(cmd,"\\","\\\\");
string_replacer(cmd,"'","\\'");
string_replacer(cmd,"`","\\`");
}
/**
Modify, in place, the given string by escaping characters that are
special to the adb shell.
@param cmd the string to be escaped.
@see shell_escape_command.
@todo check/simplify escaping.
*/
void adb_shell_escape_command(string& cmd)
{
string_replacer(cmd,"\\","\\\\");
string_replacer(cmd,"(","\\(");
string_replacer(cmd,")","\\)");
string_replacer(cmd,"'","\\'");
string_replacer(cmd,"`","\\`");
string_replacer(cmd,"|","\\|");
string_replacer(cmd,"&","\\&");
string_replacer(cmd,";","\\;");
string_replacer(cmd,"<","\\<");
string_replacer(cmd,">","\\>");
string_replacer(cmd,"*","\\*");
string_replacer(cmd,"#","\\#");
string_replacer(cmd,"%","\\%");
string_replacer(cmd,"=","\\=");
string_replacer(cmd,"~","\\~");
string_replacer(cmd,"/[0;0m","");
string_replacer(cmd,"/[1;32m","");
string_replacer(cmd,"/[1;34m","");
string_replacer(cmd,"/[1;36m","");
}
/**
Modify, in place, the given path string by escaping special characters.
@param path the string to modify.
@see shell_escape_command.
@todo check/simplify escaping.
*/
void shell_escape_path(string &path)
{
string_replacer(path, "'", "'\\''");
string_replacer(path, "\"", "\\\"");
}
/**
Make a secure temporary directory for each mounted filesystem. Use with
ANDROID_SERIAL environment variable to mount multiple phones at once.
Also set up a callback to cleanup after ourselves on clean shutdown.
*/
void cleanupTmpDir(void) {
string command = "rm -rf ";
command.append(tempDirPath);
shell(command);
}
void makeTmpDir(void) {
char adbfsTemplate[]="/tmp/adbfs-XXXXXX";
tempDirPath.assign(mkdtemp(adbfsTemplate));
tempDirPath.append("/");
atexit(&cleanupTmpDir);
}
/**
Set a given string to an adb push or pull command with given paths.
@param cmd string to which the adb command is written.
@param push true for a push command, false for pull.
@param local_path path on local host for push or pull command.
@param remote_path path on remote device for push or pull command.
@see adb_pull.
@see adb_push.
*/
void adb_push_pull_cmd(string& cmd, const bool push,
const string& local_path, const string& remote_path)
{
cmd.assign("adb ");
cmd.append((push ? "push '" : "pull '"));
cmd.append((push ? local_path : remote_path));
cmd.append("' '");
cmd.append((push ? remote_path : local_path));
cmd.append("'");
}
/**
Copy (using adb pull) a file from the Android device to the local
host.
@param remote_source Android-side file path to copy.
@param local_destination local host-side destination path for copy.
@return result of the "adb pull ..." executed using exec_command.
@see adb_push.
@see adb_push_pull_cmd.
@todo perhaps avoid or simplify shell-escaping.
@bug problems with files with spaces in filenames (adb bug?)
*/
queue<string> adb_pull(const string& remote_source,
const string& local_destination)
{
string cmd;
adb_push_pull_cmd(cmd, false, local_destination, remote_source);
return exec_command(cmd);
}
/**
Copy (using adb push) a file from the local host to the Android
device. Very similar to adb_pull.
@see adb_pull.
@see adb_push_pull_cmd.
@bug problems with files with spaces in filenames (adb bug?)
*/
queue<string> adb_push(const string& local_source,
const string& remote_destination)
{
string cmd;
adb_push_pull_cmd(cmd, true, local_source, remote_destination);
queue<string> res = exec_command(cmd);
invalidateCache(remote_destination);
return res;
}
/**
Tells Android to rescan the remote file for media changes.
*/
queue<string> adb_rescan_file(const string& remote_path)
{
string cmd;
cmd.assign("am broadcast -a android.intent.action.MEDIA_SCANNER_SCAN_FILE -d 'file://");
cmd.append(remote_path);
cmd.append("'");
return adb_shell(cmd);
}
/**
Tells Android to remove the remote directory from its media database.
*/
queue<string> adb_rescan_dir_removed(const string& remote_path)
{
string cmd;
cmd.assign("am broadcast -a android.intent.action.MEDIA_UNMOUNTED -d 'file://");
cmd.append(remote_path);
cmd.append("'");
return adb_shell(cmd);
}
/**
adbFS implementation of FUSE interface function fuse_operations.getattr.
@todo check shell escaping.
*/
int strmode_to_rawmode(const string& str) {
int fmode = 0;
switch (str[0]) {
case 's': fmode |= S_IFSOCK; break;
case 'l': fmode |= S_IFLNK; break;
case '-': fmode |= S_IFREG; break;
case 'd': fmode |= S_IFDIR; break;
case 'b': fmode |= S_IFBLK; break;
case 'c': fmode |= S_IFCHR; break;
case 'p': fmode |= S_IFIFO; break;
}
if (str[1] == 'r') fmode |= S_IRUSR;
if (str[2] == 'w') fmode |= S_IWUSR;
switch (str[3]) {
case 'x': fmode |= S_IXUSR; break;
case 's': fmode |= S_ISUID | S_IXUSR; break;
case 'S': fmode |= S_ISUID; break;
}
if (str[4] == 'r') fmode |= S_IRGRP;
if (str[5] == 'w') fmode |= S_IWGRP;
switch (str[6]) {
case 'x': fmode |= S_IXGRP; break;
case 's': fmode |= S_ISGID | S_IXGRP; break;
case 'S': fmode |= S_ISGID; break;
}
if (str[7] == 'r') fmode |= S_IROTH;
if (str[8] == 'w') fmode |= S_IWOTH;
switch (str[9]) {
case 'x': fmode |= S_IXOTH; break;
case 't': fmode |= S_ISVTX | S_IXOTH; break;
case 'T': fmode |= S_ISVTX; break;
}
return fmode;
// In octal,
// // 40XXX is folder, 100xxx is file
// // xxx is regular mode e.g. 755 = -rwxr-xr-x
//
}
// Heuristic to determine whether the output of ls produced
// an actual file
bool is_valid_ls_output(const string& file) {
/* The specific error messages we are looking for (from the android source)-
(in listdir) "opendir failed, strerror"
(in show_total_size) "stat failed on filename, strerror"
(in listfile_size) "lstat 'filename' failed: strerror"
Thus, we can abuse this a little and just make sure that the second
character is either "r" or "-", and assume it's an error otherwise.
To eliminate cases such as /rfile: no such file or directory from
producing false-positives, we also check whether the first character
is a slash
It'd be really nice if we could actually take the strerrors and convert
them back to codes, but I fear that involves undoing localization.
*/
if (file[0] == '/') return false;
if (file[1] != 'r' && file[1] != '-') return false;
return true;
}
static int adb_getattr(const char *path, struct stat *stbuf)
{
cout << "adb_getattr" << endl;
int res = 0;
struct passwd * foruid;
struct group * forgid;
memset(stbuf, 0, sizeof(struct stat));
queue<string> output;
string path_string;
path_string.assign(path);
shell_escape_path(path_string);
// TODO /caching?
//
vector<string> output_chunk;
if (fileData.find(path_string) == fileData.end()
|| fileData[path_string].timestamp + 30 < time(NULL)) {
string command = "ls -l -a -d '";
command.append(path_string);
command.append("'");
output = adb_shell(command, true);
if (output.empty()) return -EAGAIN; /* no phone */
// error format: "/sbin/healthd: Permission denied"
if (
output.front().length() > sizeof(PERMISSION_ERR_MSG) &&
(!output.front().compare(output.front().length() - sizeof(PERMISSION_ERR_MSG) + 1,
sizeof(PERMISSION_ERR_MSG) - 1, PERMISSION_ERR_MSG)))
{
fileData[path_string].statOutput.erase();
} else {
output_chunk = make_array(output.front());
fileData[path_string].statOutput = output.front();
}
fileData[path_string].timestamp = time(NULL);
} else{
output_chunk = make_array(fileData[path_string].statOutput);
cout << "from cache " << path << "\n";
}
if (fileData[path_string].statOutput.empty()) {
// return empty structure - file exists, but no info available
stbuf->st_mode = S_IFREG;
return res;
}
if(!is_valid_ls_output(output_chunk[0])) {
return -ENOENT;
}
//
// ls -lad explained
// -rw-rw-r-- root sdcard_rw 763362 2012-06-22 02:16 file.html
//
// Alternative
// -rw-r--r-- 1 root root 5905 1970-01-01 01:00 ueventd.rc
//stbuf->st_dev = atoi(output_chunk[1].c_str()); /* ID of device containing file */
//
// In octal,
// 40XXX is folder, 100xxx is file
// xxx is regular mode e.g. 755 = rwxr-xr-x
//
stbuf->st_ino = 1; /* inode number, fake. */
stbuf->st_mode = strmode_to_rawmode(output_chunk[0]); // | 0700
int uid_offset = 0;
stbuf->st_nlink = atoi(output_chunk[1].c_str());
if (stbuf->st_nlink > 0) uid_offset = 1;
else stbuf->st_nlink = 1;
foruid = getpwnam(output_chunk[uid_offset + 1].c_str());
if (foruid)
stbuf->st_uid = foruid->pw_uid; /* user ID of owner */
else
stbuf->st_uid = 98; /* 98 has been chosen (poorly) so that it doesn't map to anything */
forgid = getgrnam(output_chunk[uid_offset + 2].c_str());
if (forgid)
stbuf->st_gid = forgid->gr_gid; /* group ID of owner */
else
stbuf->st_gid = 98;
//unsigned int device_id;
//xtoi(output_chunk[6].c_str(),&device_id);
//stbuf->st_rdev = device_id; // device ID (if special file)
int iDate;
switch (stbuf->st_mode & S_IFMT) {
case S_IFBLK:
case S_IFCHR:
stbuf->st_rdev = atoi(output_chunk[uid_offset + 3].c_str()) * 256 +
atoi(output_chunk[uid_offset + 4].c_str());
stbuf->st_size = 0;
iDate = uid_offset + 5;
break;
break;
case S_IFREG:
stbuf->st_size = atol(output_chunk[uid_offset + 3].c_str()); /* total size, in bytes */
iDate = uid_offset + 4;
break;
default:
case S_IFSOCK:
case S_IFIFO:
case S_IFLNK:
case S_IFDIR:
stbuf->st_size = 0;
iDate = uid_offset + 3;
if (output_chunk[iDate].find_first_of("-") == string::npos) ++iDate;
break;
}
// du calculates sizes based on number of 512b blocks
stbuf->st_blksize = 512;
stbuf->st_blocks = (stbuf->st_size + 256) / 512;
//for (int k = 0; k < output_chunk.size(); ++k) cout << output_chunk[k] << " ";
//cout << endl;
vector<string> ymd = make_array(output_chunk[iDate], "-");
vector<string> hm = make_array(output_chunk[iDate + 1], ":");
//for (int k = 0; k < ymd.size(); ++k) cout << ymd[k] << " ";
//cout << endl;
//for (int k = 0; k < hm.size(); ++k) cout << hm[k] << " ";
//cout << endl;
struct tm ftime;
ftime.tm_year = atoi(ymd[0].c_str()) - 1900;
ftime.tm_mon = atoi(ymd[1].c_str()) - 1;
ftime.tm_mday = atoi(ymd[2].c_str());
ftime.tm_hour = atoi(hm[0].c_str());
ftime.tm_min = atoi(hm[1].c_str());
ftime.tm_sec = 0;
ftime.tm_isdst = -1;
time_t now = mktime(&ftime);
//cout << "after mktime" << endl;
//long now = time(0);
stbuf->st_atime = now; /* time of last access */
//stbuf->st_atime = atol(output_chunk[11].c_str()); /* time of last access */
stbuf->st_mtime = now; /* time of last modification */
//stbuf->st_mtime = atol(output_chunk[12].c_str()); /* time of last modification */
stbuf->st_ctime = now; /* time of last status change */
//stbuf->st_ctime = atol(output_chunk[13].c_str()); /* time of last status change */
return res;
}
size_t find_nth(int n, const string& substr, const string& corpus) {
size_t p = 0;
while (n--) {
if ((( p = corpus.find_first_of(substr, p) )) == string::npos) return string::npos;
p = corpus.find_first_not_of(substr, p);
}
return p;
}
/**
adbFS implementation of FUSE interface function fuse_operations.readdir.
@todo check shell escaping.
*/
static int adb_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
(void) offset;
(void) fi;
string path_string;
string local_path_string;
path_string.assign(path);
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
queue<string> output;
string command = "ls -l -a '";
command.append(path_string);
command.append("'");
output = adb_shell(command);
/* cannot tell between "no phone" and "empty directory" */
cout << "found files: " << output.size() << endl;
while (output.size() > 0) {
// skip lines too short to process (should not happen)
if (output.front().length() >= 3) {
// we can get e.g. "permission denied" during listing, need to check every line separately
if (!is_valid_ls_output(output.front())) {
// error format: "lstat '//efs' failed: Permission denied"
if (
output.front().length() > sizeof(PERMISSION_ERR_MSG) &&
(!output.front().compare(output.front().length() - sizeof(PERMISSION_ERR_MSG) + 1,
sizeof(PERMISSION_ERR_MSG) - 1, PERMISSION_ERR_MSG))) {
size_t nameStart = output.front().rfind("/") + 1;
const string& fname_l = output.front().substr(nameStart, output.front().find("' ") - nameStart);
cout << "Adding file:" << fname_l << ":" << endl;
filler(buf, fname_l.c_str(), NULL, 0);
const string& path_string_c = path_string
+ (path_string == "/" ? "" : "/") + fname_l;
cout << "caching " << path_string_c << " = " << output.front() << endl;
fileData[path_string_c].statOutput.erase();
fileData[path_string_c].timestamp = time(NULL);
cout << "cached " << endl;
}
} else {
// Start of filename = `ls -la` time separator + 4
size_t nameStart = output.front().find_first_of(":") + 4;
const string& fname_l = output.front().substr(nameStart);
const string fname_n = fname_l.substr(0, fname_l.find(" -> "));
cout << "Adding file:" << fname_n <<":" << endl;
filler(buf, fname_n.c_str(), NULL, 0);
const string path_string_c = path_string
+ (path_string == "/" ? "" : "/") + fname_n;
cout << "caching " << path_string_c << " = " << output.front() << endl;
fileData[path_string_c].statOutput = output.front();
fileData[path_string_c].timestamp = time(NULL);
cout << "cached " << endl;
}
}
output.pop();
}
cout << "done with found files" << endl;
return 0;
}
static int adb_open(const char *path, struct fuse_file_info *fi)
{
string path_string;
string local_path_string;
path_string.assign(path);
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
string filehandle_path = local_path_string;
path_string.assign(path);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
cout << "-- adb_open --" << path_string << " " << local_path_string << "\n";
if (!fileTruncated[path_string]){
queue<string> output;
string command = "ls -l -a -d '";
command.append(path_string);
command.append("'");
cout << command<<"\n";
output = adb_shell(command);
vector<string> output_chunk = make_array(output.front());
if (!is_valid_ls_output(output_chunk[0])) {
return -ENOENT;
}
path_string.assign(path);
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
adb_pull(path_string,local_path_string);
} else {
fileTruncated[path_string] = false;
}
fi->fh = open(filehandle_path.c_str(), fi->flags);
return 0;
}
static int adb_read(const char *path, char *buf, size_t size, off_t offset,
struct fuse_file_info *fi)
{
int fd;
int res;
fd = fi->fh; //open(local_path_string.c_str(), O_RDWR);
if(fd == -1)
return -errno;
res = pread(fd, buf, size, offset);
//close(fd);
if(res == -1)
res = -errno;
return res;
}
static int adb_write(const char *path, const char *buf, size_t size, off_t offset, struct fuse_file_info *fi) {
//string path_string;
//string local_path_string;
//path_string.assign(path);
//shell_escape_path(path_string);
int fd = fi->fh; //open(local_path_string.c_str(), O_CREAT|O_RDWR|O_TRUNC);
filePendingWrite[fd] = true;
int res = pwrite(fd, buf, size, offset);
//close(fd);
//adb_push(local_path_string,path_string);
//adb_shell("sync");
if (res == -1)
res = -errno;
return res;
}
static int adb_flush(const char *path, struct fuse_file_info *fi) {
string path_string;
string local_path_string;
path_string.assign(path);
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
int flags = fi->flags;
int fd = fi->fh;
cout << "flag is: "<< flags <<"\n";
invalidateCache(path_string);
if (filePendingWrite[fd]) {
filePendingWrite[fd] = false;
adb_push(local_path_string, path_string);
adb_shell("sync");
if (adbfs_conf.rescan) adb_rescan_file(path_string);
}
return 0;
}
static int adb_release(const char *path, struct fuse_file_info *fi) {
// just like in the other functions
string path_string;
string local_path_string;
path_string.assign(path);
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
// untouched
int fd = fi->fh;
filePendingWrite.erase(filePendingWrite.find(fd));
close(fd);
// remove local copy
unlink(local_path_string.c_str());
return 0;
}
static int adb_access(const char *path, int mask) {
//###cout << "###access[path=" << path << "]" << endl;
return 0;
}
static int adb_utimens(const char *path, const struct timespec ts[2]) {
string path_string;
path_string.assign(path);
fileData[path_string].timestamp = fileData[path_string].timestamp + 50;
shell_escape_path(path_string);
queue<string> output;
string command = "touch '";
command.append(path_string);
command.append("'");
cout << command<<"\n";
adb_shell(command);
// If we forgot to mount -o rescan then we can remount and touch to trigger the scan.
if (adbfs_conf.rescan) adb_rescan_file(path_string);
return 0;
}
static int adb_truncate(const char *path, off_t size) {
string path_string;
string local_path_string;
path_string.assign(path);
fileData[path_string].timestamp = fileData[path_string].timestamp + 50;
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
queue<string> output;
cout << "adb_truncate" << endl;
string command = "ls -l -a -d '";
command.append(path_string);
command.append("'");
cout << command << "\n";
output = adb_shell(command);
vector<string> output_chunk = make_array(output.front());
if (output_chunk[0][0] == '/'){
adb_pull(path_string,local_path_string);
}
fileTruncated[path_string] = true;
invalidateCache(path_string);
cout << "truncate[path=" << local_path_string << "][size=" << size << "]" << endl;
return truncate(local_path_string.c_str(),size);
}
static int adb_mknod(const char *path, mode_t mode, dev_t rdev) {
string path_string;
string local_path_string;
path_string.assign(path);
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
cout << "mknod for " << local_path_string << "\n";
mknod(local_path_string.c_str(),mode, rdev);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
adb_push(local_path_string,path_string);
adb_shell("sync");
invalidateCache(path_string);
return 0;
}
static int adb_mkdir(const char *path, mode_t mode) {
string path_string;
string local_path_string;
path_string.assign(path);
fileData[path_string].timestamp = fileData[path_string].timestamp + 50;
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
string command;
command.assign("mkdir '");
command.append(path_string);
command.append("'");
adb_shell(command);
invalidateCache(path_string);
return 0;
}
static int adb_rename(const char *from, const char *to) {
string local_from_string,local_to_string = tempDirPath;
string from_string = string(from), to_string = string(to);
local_from_string.append(from);
local_to_string.append(to);
shell_escape_path(local_from_string);
shell_escape_path(local_to_string);
shell_escape_path(from_string);
shell_escape_path(to_string);
string command = "mv '";
command.append(from_string);
command.append("' '");
command.append(to_string);
command.append("'");
cout << "Renaming " << from << " to " << to <<"\n";
adb_shell(command);
if (adbfs_conf.rescan) {
adb_rescan_file(from);
adb_rescan_file(to);
}
invalidateCache(string(from));
invalidateCache(string(to));
return 0;
}
static int adb_rmdir(const char *path) {
string path_string;
string local_path_string;
path_string.assign(path);
fileData[path_string].timestamp = fileData[path_string].timestamp + 50;
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
string command = "rmdir '";
command.append(path_string);
command.append("'");
adb_shell(command);
if (adbfs_conf.rescan) adb_rescan_dir_removed(path_string);
invalidateCache(path_string);
//rmdir(local_path_string.c_str());
return 0;
}
static int adb_unlink(const char *path) {
string path_string;
string local_path_string;
path_string.assign(path);
fileData[path_string].timestamp = fileData[path_string].timestamp + 50;
local_path_string = tempDirPath;
string_replacer(path_string,"/","-");
local_path_string.append(path_string);
path_string.assign(path);
shell_escape_path(path_string);
shell_escape_path(local_path_string);
string command = "rm '";
command.append(path_string);
command.append("'");
adb_shell(command);
if (adbfs_conf.rescan) adb_rescan_file(path_string);
invalidateCache(path_string);
unlink(local_path_string.c_str());
return 0;
}
static int adb_readlink(const char *path, char *buf, size_t size)
{
cout << "adb_readlink" << endl;
string path_string(path);
shell_escape_path(path_string);
queue<string> output;
// get the number of slashes in the path
int num_slashes, ii;
for (num_slashes = ii = 0; ii < strlen(path); ii++)
if (path[ii] == '/')
num_slashes++;
if (num_slashes >= 1) num_slashes--;
if (fileData.find(path_string) == fileData.end()
|| fileData[path_string].timestamp + 30 < time(NULL)) {
string command = "ls -l -a -d '";
command.append(path_string);
command.append("'");
output = adb_shell(command);
if (output.empty())
return -EINVAL;
// error format: "/sbin/healthd: Permission denied"
if ((output.front().length() > sizeof(PERMISSION_ERR_MSG)) &&
(!output.front().compare(output.front().length() - sizeof(PERMISSION_ERR_MSG) + 1,
sizeof(PERMISSION_ERR_MSG) - 1, PERMISSION_ERR_MSG)))
{
fileData[path_string].statOutput.erase();
} else {
fileData[path_string].statOutput = output.front();
}
fileData[path_string].timestamp = time(NULL);
} else{
cout << "from cache " << path << "\n";
}
string &res = fileData[path_string].statOutput;
if (res.empty()) {
// file exists, but no info available
return -EINVAL;
}
if (!is_valid_ls_output(res)) {
return -ENOENT;
}