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/*
* 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.
*/
/* this file contains system-dependent definitions used by ADB
* they're related to threads, sockets and file descriptors
*/
#ifndef _ADB_SYSDEPS_H
#define _ADB_SYSDEPS_H
#ifdef __CYGWIN__
# undef _WIN32
#endif
#include <errno.h>
/*
* TEMP_FAILURE_RETRY is defined by some, but not all, versions of
* <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's
* not already defined, then define it here.
*/
#ifndef TEMP_FAILURE_RETRY
/* Used to retry syscalls that can return EINTR. */
#define TEMP_FAILURE_RETRY(exp) ({ \
typeof (exp) _rc; \
do { \
_rc = (exp); \
} while (_rc == -1 && errno == EINTR); \
_rc; })
#endif
#ifdef _WIN32
#include <ctype.h>
#include <direct.h>
#include <errno.h>
#include <fcntl.h>
#include <io.h>
#include <process.h>
#include <sys/stat.h>
#include <winsock2.h>
#include <windows.h>
#include <ws2tcpip.h>
#include "fdevent.h"
#define OS_PATH_SEPARATOR '\\'
#define OS_PATH_SEPARATOR_STR "\\"
#define ENV_PATH_SEPARATOR_STR ";"
typedef CRITICAL_SECTION adb_mutex_t;
#define ADB_MUTEX_DEFINE(x) adb_mutex_t x
/* declare all mutexes */
/* For win32, adb_sysdeps_init() will do the mutex runtime initialization. */
#define ADB_MUTEX(x) extern adb_mutex_t x;
#include "mutex_list.h"
extern void adb_sysdeps_init(void);
static __inline__ void adb_mutex_lock( adb_mutex_t* lock )
{
EnterCriticalSection( lock );
}
static __inline__ void adb_mutex_unlock( adb_mutex_t* lock )
{
LeaveCriticalSection( lock );
}
typedef void* (*adb_thread_func_t)(void* arg);
typedef void (*win_thread_func_t)(void* arg);
static __inline__ bool adb_thread_create(adb_thread_func_t func, void* arg) {
uintptr_t tid = _beginthread((win_thread_func_t)func, 0, arg);
return (tid != static_cast<uintptr_t>(-1L));
}
static __inline__ unsigned long adb_thread_id()
{
return GetCurrentThreadId();
}
static __inline__ void close_on_exec(int fd)
{
/* nothing really */
}
#define lstat stat /* no symlinks on Win32 */
#define S_ISLNK(m) 0 /* no symlinks on Win32 */
static __inline__ int adb_unlink(const char* path)
{
int rc = unlink(path);
if (rc == -1 && errno == EACCES) {
/* unlink returns EACCES when the file is read-only, so we first */
/* try to make it writable, then unlink again... */
rc = chmod(path, _S_IREAD|_S_IWRITE );
if (rc == 0)
rc = unlink(path);
}
return rc;
}
#undef unlink
#define unlink ___xxx_unlink
static __inline__ int adb_mkdir(const char* path, int mode)
{
return _mkdir(path);
}
#undef mkdir
#define mkdir ___xxx_mkdir
// See the comments for the !defined(_WIN32) versions of adb_*().
extern int adb_open(const char* path, int options);
extern int adb_creat(const char* path, int mode);
extern int adb_read(int fd, void* buf, int len);
extern int adb_write(int fd, const void* buf, int len);
extern int adb_lseek(int fd, int pos, int where);
extern int adb_shutdown(int fd);
extern int adb_close(int fd);
// See the comments for the !defined(_WIN32) version of unix_close().
static __inline__ int unix_close(int fd)
{
return close(fd);
}
#undef close
#define close ____xxx_close
// See the comments for the !defined(_WIN32) version of unix_read().
extern int unix_read(int fd, void* buf, size_t len);
#undef read
#define read ___xxx_read
// See the comments for the !defined(_WIN32) version of unix_write().
static __inline__ int unix_write(int fd, const void* buf, size_t len)
{
return write(fd, buf, len);
}
#undef write
#define write ___xxx_write
// See the comments for the !defined(_WIN32) version of adb_open_mode().
static __inline__ int adb_open_mode(const char* path, int options, int mode)
{
return adb_open(path, options);
}
// See the comments for the !defined(_WIN32) version of unix_open().
static __inline__ int unix_open(const char* path, int options,...)
{
if ((options & O_CREAT) == 0)
{
return open(path, options);
}
else
{
int mode;
va_list args;
va_start( args, options );
mode = va_arg( args, int );
va_end( args );
return open(path, options, mode);
}
}
#define open ___xxx_unix_open
/* normally provided by <cutils/misc.h> */
extern void* load_file(const char* pathname, unsigned* psize);
/* normally provided by "fdevent.h" */
#define FDE_READ 0x0001
#define FDE_WRITE 0x0002
#define FDE_ERROR 0x0004
#define FDE_DONT_CLOSE 0x0080
typedef void (*fd_func)(int fd, unsigned events, void *userdata);
fdevent *fdevent_create(int fd, fd_func func, void *arg);
void fdevent_destroy(fdevent *fde);
void fdevent_install(fdevent *fde, int fd, fd_func func, void *arg);
void fdevent_remove(fdevent *item);
void fdevent_set(fdevent *fde, unsigned events);
void fdevent_add(fdevent *fde, unsigned events);
void fdevent_del(fdevent *fde, unsigned events);
void fdevent_loop();
static __inline__ void adb_sleep_ms( int mseconds )
{
Sleep( mseconds );
}
extern int adb_socket_accept(int serverfd, struct sockaddr* addr, socklen_t *addrlen);
#undef accept
#define accept ___xxx_accept
extern int adb_setsockopt(int fd, int level, int optname, const void* optval, socklen_t optlen);
#undef setsockopt
#define setsockopt ___xxx_setsockopt
static __inline__ int adb_socket_setbufsize( int fd, int bufsize )
{
int opt = bufsize;
return adb_setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (const void*)&opt, sizeof(opt));
}
static __inline__ void disable_tcp_nagle( int fd )
{
int on = 1;
adb_setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void*)&on, sizeof(on));
}
extern int adb_socketpair( int sv[2] );
static __inline__ char* adb_dirstart( const char* path )
{
char* p = strchr(path, '/');
char* p2 = strchr(path, '\\');
if ( !p )
p = p2;
else if ( p2 && p2 > p )
p = p2;
return p;
}
static __inline__ char* adb_dirstop( const char* path )
{
char* p = strrchr(path, '/');
char* p2 = strrchr(path, '\\');
if ( !p )
p = p2;
else if ( p2 && p2 > p )
p = p2;
return p;
}
static __inline__ int adb_is_absolute_host_path( const char* path )
{
return isalpha(path[0]) && path[1] == ':' && path[2] == '\\';
}
#else /* !_WIN32 a.k.a. Unix */
#include "fdevent.h"
#include <cutils/misc.h>
#include <cutils/threads.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pthread.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdarg.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <string.h>
#include <unistd.h>
#define OS_PATH_SEPARATOR '/'
#define OS_PATH_SEPARATOR_STR "/"
#define ENV_PATH_SEPARATOR_STR ":"
typedef pthread_mutex_t adb_mutex_t;
#define ADB_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
#define adb_mutex_init pthread_mutex_init
#define adb_mutex_lock pthread_mutex_lock
#define adb_mutex_unlock pthread_mutex_unlock
#define adb_mutex_destroy pthread_mutex_destroy
#define ADB_MUTEX_DEFINE(m) adb_mutex_t m = PTHREAD_MUTEX_INITIALIZER
#define adb_cond_t pthread_cond_t
#define adb_cond_init pthread_cond_init
#define adb_cond_wait pthread_cond_wait
#define adb_cond_broadcast pthread_cond_broadcast
#define adb_cond_signal pthread_cond_signal
#define adb_cond_destroy pthread_cond_destroy
/* declare all mutexes */
#define ADB_MUTEX(x) extern adb_mutex_t x;
#include "mutex_list.h"
static __inline__ void close_on_exec(int fd)
{
fcntl( fd, F_SETFD, FD_CLOEXEC );
}
// Open a file and return a file descriptor that may be used with unix_read(),
// unix_write(), unix_close(), but not adb_read(), adb_write(), adb_close().
//
// On Unix, this is based on open(), so the file descriptor is a real OS file
// descriptor, but the Windows implementation (in sysdeps_win32.cpp) returns a
// file descriptor that can only be used with C Runtime APIs (which are wrapped
// by unix_read(), unix_write(), unix_close()). Also, the C Runtime has
// configurable CR/LF translation which defaults to text mode, but is settable
// with _setmode().
static __inline__ int unix_open(const char* path, int options,...)
{
if ((options & O_CREAT) == 0)
{
return TEMP_FAILURE_RETRY( open(path, options) );
}
else
{
int mode;
va_list args;
va_start( args, options );
mode = va_arg( args, int );
va_end( args );
return TEMP_FAILURE_RETRY( open( path, options, mode ) );
}
}
// Similar to the two-argument adb_open(), but takes a mode parameter for file
// creation. See adb_open() for more info.
static __inline__ int adb_open_mode( const char* pathname, int options, int mode )
{
return TEMP_FAILURE_RETRY( open( pathname, options, mode ) );
}
// Open a file and return a file descriptor that may be used with adb_read(),
// adb_write(), adb_close(), but not unix_read(), unix_write(), unix_close().
//
// On Unix, this is based on open(), but the Windows implementation (in
// sysdeps_win32.cpp) uses Windows native file I/O and bypasses the C Runtime
// and its CR/LF translation. The returned file descriptor should be used with
// adb_read(), adb_write(), adb_close(), etc.
static __inline__ int adb_open( const char* pathname, int options )
{
int fd = TEMP_FAILURE_RETRY( open( pathname, options ) );
if (fd < 0)
return -1;
close_on_exec( fd );
return fd;
}
#undef open
#define open ___xxx_open
static __inline__ int adb_shutdown(int fd)
{
return shutdown(fd, SHUT_RDWR);
}
#undef shutdown
#define shutdown ____xxx_shutdown
// Closes a file descriptor that came from adb_open() or adb_open_mode(), but
// not designed to take a file descriptor from unix_open(). See the comments
// for adb_open() for more info.
static __inline__ int adb_close(int fd)
{
return close(fd);
}
#undef close
#define close ____xxx_close
static __inline__ int adb_read(int fd, void* buf, size_t len)
{
return TEMP_FAILURE_RETRY( read( fd, buf, len ) );
}
#undef read
#define read ___xxx_read
static __inline__ int adb_write(int fd, const void* buf, size_t len)
{
return TEMP_FAILURE_RETRY( write( fd, buf, len ) );
}
#undef write
#define write ___xxx_write
static __inline__ int adb_lseek(int fd, int pos, int where)
{
return lseek(fd, pos, where);
}
#undef lseek
#define lseek ___xxx_lseek
static __inline__ int adb_unlink(const char* path)
{
return unlink(path);
}
#undef unlink
#define unlink ___xxx_unlink
static __inline__ int adb_creat(const char* path, int mode)
{
int fd = TEMP_FAILURE_RETRY( creat( path, mode ) );
if ( fd < 0 )
return -1;
close_on_exec(fd);
return fd;
}
#undef creat
#define creat ___xxx_creat
static __inline__ int adb_socket_accept(int serverfd, struct sockaddr* addr, socklen_t *addrlen)
{
int fd;
fd = TEMP_FAILURE_RETRY( accept( serverfd, addr, addrlen ) );
if (fd >= 0)
close_on_exec(fd);
return fd;
}
#undef accept
#define accept ___xxx_accept
// Operate on a file descriptor returned from unix_open() or a well-known file
// descriptor such as STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO.
//
// On Unix, unix_read(), unix_write(), unix_close() map to adb_read(),
// adb_write(), adb_close() (which all map to Unix system calls), but the
// Windows implementations (in the ifdef above and in sysdeps_win32.cpp) call
// into the C Runtime and its configurable CR/LF translation (which is settable
// via _setmode()).
#define unix_read adb_read
#define unix_write adb_write
#define unix_close adb_close
typedef void* (*adb_thread_func_t)( void* arg );
static __inline__ bool adb_thread_create(adb_thread_func_t start, void* arg) {
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_t thread;
errno = pthread_create(&thread, &attr, start, arg);
return (errno == 0);
}
static __inline__ int adb_socket_setbufsize( int fd, int bufsize )
{
int opt = bufsize;
return setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &opt, sizeof(opt));
}
static __inline__ void disable_tcp_nagle(int fd)
{
int on = 1;
setsockopt( fd, IPPROTO_TCP, TCP_NODELAY, (void*)&on, sizeof(on) );
}
static __inline__ int adb_setsockopt( int fd, int level, int optname, const void* optval, socklen_t optlen )
{
return setsockopt( fd, level, optname, optval, optlen );
}
#undef setsockopt
#define setsockopt ___xxx_setsockopt
static __inline__ int unix_socketpair( int d, int type, int protocol, int sv[2] )
{
return socketpair( d, type, protocol, sv );
}
static __inline__ int adb_socketpair( int sv[2] )
{
int rc;
rc = unix_socketpair( AF_UNIX, SOCK_STREAM, 0, sv );
if (rc < 0)
return -1;
close_on_exec( sv[0] );
close_on_exec( sv[1] );
return 0;
}
#undef socketpair
#define socketpair ___xxx_socketpair
static __inline__ void adb_sleep_ms( int mseconds )
{
usleep( mseconds*1000 );
}
static __inline__ int adb_mkdir(const char* path, int mode)
{
return mkdir(path, mode);
}
#undef mkdir
#define mkdir ___xxx_mkdir
static __inline__ void adb_sysdeps_init(void)
{
}
static __inline__ char* adb_dirstart(const char* path)
{
return strchr(path, '/');
}
static __inline__ char* adb_dirstop(const char* path)
{
return strrchr(path, '/');
}
static __inline__ int adb_is_absolute_host_path( const char* path )
{
return path[0] == '/';
}
static __inline__ unsigned long adb_thread_id()
{
return (unsigned long)gettid();
}
#endif /* !_WIN32 */
#endif /* _ADB_SYSDEPS_H */