// @(#)root/unix:$Name: $:$Id: TUnixSystem.cxx,v 1.141 2005/09/07 08:20:42 brun Exp $
// Author: Fons Rademakers 15/09/95
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
//////////////////////////////////////////////////////////////////////////
// //
// TUnixSystem //
// //
// Class providing an interface to the UNIX Operating System. //
// //
//////////////////////////////////////////////////////////////////////////
#ifdef HAVE_CONFIG
#include "config.h"
#endif
#include "RConfig.h"
#include "TUnixSystem.h"
#include "TROOT.h"
#include "TError.h"
#include "TMath.h"
#include "TOrdCollection.h"
#include "TRegexp.h"
#include "TException.h"
#include "Demangle.h"
#include "TEnv.h"
#include "TSocket.h"
#include "Getline.h"
#include "TInterpreter.h"
#include "TApplication.h"
#include "TObjString.h"
#include "Riostream.h"
#include "TVirtualMutex.h"
//#define G__OLDEXPAND
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#if defined(R__SUN) || defined(R__SGI) || defined(R__HPUX) || \
defined(R__AIX) || defined(R__LINUX) || defined(R__SOLARIS) || \
defined(R__ALPHA) || defined(R__HIUX) || defined(R__FBSD) || \
defined(R__OBSD) || defined(R__MACOSX) || defined(R__HURD)
#define HAS_DIRENT
#endif
#ifdef HAS_DIRENT
# include <dirent.h>
#else
# include <sys/dir.h>
#endif
#if defined(ULTRIX) || defined(R__SUN)
# include <sgtty.h>
#endif
#if defined(R__AIX) || defined(R__LINUX) || defined(R__ALPHA) || \
defined(R__SGI) || defined(R__HIUX) || defined(R__FBSD) || \
defined(R__OBSD) || defined(R__LYNXOS) || defined(R__MACOSX) || \
defined(R__HURD)
# include <sys/ioctl.h>
#endif
#if defined(R__AIX) || defined(R__SOLARIS)
# include <sys/select.h>
#endif
#if defined(R__LINUX) || defined(R__HURD)
# ifndef SIGSYS
# define SIGSYS SIGUNUSED // SIGSYS does not exist in linux ??
# endif
#endif
#if defined(R__ALPHA)
# include <sys/mount.h>
# ifndef R__TRUE64
extern "C" int statfs(const char *file, struct statfs *buffer);
# endif
#elif defined(R__MACOSX)
# include <sys/mount.h>
extern "C" int statfs(const char *file, struct statfs *buffer);
#elif defined(R__LINUX) || defined(R__HPUX) || defined(R__HURD)
# include <sys/vfs.h>
#elif defined(R__FBSD) || defined(R__OBSD)
# include <sys/param.h>
# include <sys/mount.h>
#else
# include <sys/statfs.h>
#endif
#include <utime.h>
#include <syslog.h>
#include <sys/stat.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/param.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include <sys/wait.h>
#include <time.h>
#include <sys/time.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#if defined(R__AIX)
# define _XOPEN_EXTENDED_SOURCE
# include <arpa/inet.h>
# undef _XOPEN_EXTENDED_SOURCE
# if !defined(_AIX41) && !defined(_AIX43)
// AIX 3.2 doesn't have it
# define HASNOT_INETATON
# endif
#else
# include <arpa/inet.h>
#endif
#include <sys/un.h>
#include <netdb.h>
#include <fcntl.h>
#if defined(R__SGI)
# include <net/soioctl.h>
#endif
#if defined(R__SOLARIS)
# include <sys/systeminfo.h>
# include <sys/filio.h>
# include <sys/sockio.h>
# define HASNOT_INETATON
# define INADDR_NONE (UInt_t)-1
#endif
#if defined(R__HPUX)
# include <symlink.h>
# include <dl.h>
# if defined(R__GNU)
extern "C" {
extern shl_t cxxshl_load(const char *path, int flags, long address);
extern int cxxshl_unload(shl_t handle);
}
# elif !defined(__STDCPP__)
# include <cxxdl.h>
# endif
# if defined(hpux9)
extern "C" {
extern void openlog(const char *, int, int);
extern void syslog(int, const char *, ...);
extern void closelog(void);
extern int setlogmask(int);
}
# define HASNOT_INETATON
# endif
#endif
#if defined(R__ALPHA) && !defined(R__GNU)
# define HASNOT_INETATON
#endif
#if defined(R__HIUX)
# define HASNOT_INETATON
#endif
#if defined(R__SGI) || defined(R__SOLARIS)
# define HAVE_UTMPX_H
# define UTMP_NO_ADDR
#endif
#if defined(R__ALPHA) || defined(R__AIX) || defined(R__FBSD) || \
defined(R__OBSD) || defined(R__LYNXOS) || defined(R__MACOSX)
# define UTMP_NO_ADDR
#endif
#if (defined(R__AIX) && !defined(_AIX43)) || (defined(R__FBSD) && \
!defined(R__ALPHA)) || defined(R__OBSD) || \
(defined(R__SUNGCC3) && !defined(__arch64__))
# define USE_SIZE_T
#elif defined(R__GLIBC) || (defined(R__FBSD) && defined(R__ALPHA)) || \
(defined(R__SUNGCC3) && defined(__arch64__)) || \
defined(MAC_OS_X_VERSION_10_4) || \
(defined(R__AIX) && defined(_AIX43))
# define USE_SOCKLEN_T
#endif
#if defined(R__LYNXOS)
extern "C" {
extern int putenv(const char *);
extern int inet_aton(const char *, struct in_addr *);
};
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#define STRUCT_UTMP struct utmpx
#else
#include <utmp.h>
#define STRUCT_UTMP struct utmp
#endif
#if !defined(UTMP_FILE) && defined(_PATH_UTMP) // 4.4BSD
#define UTMP_FILE _PATH_UTMP
#endif
#if defined(UTMPX_FILE) // Solaris, SysVr4
#undef UTMP_FILE
#define UTMP_FILE UTMPX_FILE
#endif
#ifndef UTMP_FILE
#define UTMP_FILE "/etc/utmp"
#endif
// stack trace code
#if defined(R__HPUX) && !defined(R__GNU)
# define HAVE_U_STACK_TRACE
#endif
#if defined(R__AIX)
// # define HAVE_XL_TRBK // does not work as expected
#endif
#if defined(R__LINUX) || defined(R__HURD)
# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1
# define HAVE_BACKTRACE_SYMBOLS_FD
# endif
# define HAVE_DLADDR
#endif
#ifdef HAVE_U_STACK_TRACE
// HP-UX stack walker (http://devresource.hp.com/STK/partner/unwind.pdf)
extern "C" void U_STACK_TRACE(void);
#endif
#ifdef HAVE_XL_TRBK
// AIX stack walker (from xlf FORTRAN 90 runtime).
extern "C" void xl__trbk(void);
#endif
#ifdef HAVE_BACKTRACE_SYMBOLS_FD
# include <execinfo.h>
#endif
#ifdef HAVE_DLADDR
# ifndef __USE_GNU
# define __USE_GNU
# endif
# include <dlfcn.h>
#endif
#ifdef HAVE_BACKTRACE_SYMBOLS_FD
// The maximum stack trace depth for systems where we request the
// stack depth separately (currently glibc-based systems).
static const int kMAX_BACKTRACE_DEPTH = 128;
#endif
// FPE handling includes
#if (defined(R__LINUX) && !defined(R__WINGCC))
#include <fpu_control.h>
#include <fenv.h>
#endif
#if defined(R__MACOSX) && !defined(__xlC__) && !defined(__i386__)
#include <fenv.h>
#include <signal.h>
#include <ucontext.h>
#include <stdlib.h>
#include <stdio.h>
#include <mach/thread_status.h>
#define fegetenvd(x) asm volatile("mffs %0" : "=f" (x));
#define fesetenvd(x) asm volatile("mtfsf 255,%0" : : "f" (x));
enum {
FE_ENABLE_INEXACT = 0x00000008,
FE_ENABLE_DIVBYZERO = 0x00000010,
FE_ENABLE_UNDERFLOW = 0x00000020,
FE_ENABLE_OVERFLOW = 0x00000040,
FE_ENABLE_INVALID = 0x00000080,
FE_ENABLE_ALL_EXCEPT = 0x000000F8
};
#endif
// End FPE handling includes
static STRUCT_UTMP *gUtmpContents;
const char *kServerPath = "/tmp";
const char *kProtocolName = "tcp";
//------------------- Unix TFdSet ----------------------------------------------
#ifndef HOWMANY
# define HOWMANY(x, y) (((x)+((y)-1))/(y))
#endif
const Int_t kNFDBITS = (sizeof(Long_t) * 8); // 8 bits per byte
#ifdef FD_SETSIZE
const Int_t kFDSETSIZE = FD_SETSIZE; // Linux = 1024 file descriptors
#else
const Int_t kFDSETSIZE = 256; // upto 256 file descriptors
#endif
class TFdSet {
private:
Long_t fds_bits[HOWMANY(kFDSETSIZE, kNFDBITS)];
public:
TFdSet() { memset(fds_bits, 0, sizeof(fds_bits)); }
TFdSet(const TFdSet &org) { memcpy(fds_bits, org.fds_bits, sizeof(org.fds_bits)); }
TFdSet &operator=(const TFdSet &rhs) { if (this != &rhs) { memcpy(fds_bits, rhs.fds_bits, sizeof(rhs.fds_bits));} return *this; }
void Zero() { memset(fds_bits, 0, sizeof(fds_bits)); }
void Set(Int_t n)
{
if (n >= 0 && n < kFDSETSIZE) {
fds_bits[n/kNFDBITS] |= (1L << (n % kNFDBITS));
} else {
::Fatal("TFdSet::Set","fd (%d) out of range [0..%d]", n, kFDSETSIZE-1);
}
}
void Clr(Int_t n)
{
if (n >= 0 && n < kFDSETSIZE) {
fds_bits[n/kNFDBITS] &= ~(1L << (n % kNFDBITS));
} else {
::Fatal("TFdSet::Clr","fd (%d) out of range [0..%d]", n, kFDSETSIZE-1);
}
}
Int_t IsSet(Int_t n)
{
if (n >= 0 && n < kFDSETSIZE) {
return fds_bits[n/kNFDBITS] & (1L << (n % kNFDBITS));
} else {
::Fatal("TFdSet::IsSet","fd (%d) out of range [0..%d]", n, kFDSETSIZE-1);
return 0;
}
}
Long_t *GetBits() { return (Long_t *)fds_bits; }
};
//______________________________________________________________________________
static void SigHandler(ESignals sig)
{
// Unix signal handler.
if (gSystem)
((TUnixSystem*)gSystem)->DispatchSignals(sig);
}
ClassImp(TUnixSystem)
//______________________________________________________________________________
TUnixSystem::TUnixSystem() : TSystem("Unix", "Unix System")
{ }
//______________________________________________________________________________
TUnixSystem::~TUnixSystem()
{
// Reset to original state.
UnixResetSignals();
delete fReadmask;
delete fWritemask;
delete fReadready;
delete fWriteready;
delete fSignals;
}
//______________________________________________________________________________
Bool_t TUnixSystem::Init()
{
// Initialize Unix system interface.
if (TSystem::Init())
return kTRUE;
fReadmask = new TFdSet;
fWritemask = new TFdSet;
fReadready = new TFdSet;
fWriteready = new TFdSet;
fSignals = new TFdSet;
//--- install default handlers
UnixSignal(kSigChild, SigHandler);
UnixSignal(kSigBus, SigHandler);
UnixSignal(kSigSegmentationViolation, SigHandler);
UnixSignal(kSigIllegalInstruction, SigHandler);
UnixSignal(kSigSystem, SigHandler);
UnixSignal(kSigPipe, SigHandler);
UnixSignal(kSigAlarm, SigHandler);
UnixSignal(kSigUrgent, SigHandler);
UnixSignal(kSigFloatingException, SigHandler);
UnixSignal(kSigWindowChanged, SigHandler);
#ifndef ROOTPREFIX
gRootDir = Getenv("ROOTSYS");
if (gRootDir == 0)
gRootDir= "/usr/local/root";
#else
gRootDir = ROOTPREFIX;
#endif
return kFALSE;
}
//---- Misc --------------------------------------------------------------------
//______________________________________________________________________________
void TUnixSystem::SetProgname(const char *name)
{
// Set the application name (from command line, argv[0]) and copy it in
// gProgName. Copy the application pathname in gProgPath.
if (name && strlen(name) > 0) {
gProgName = StrDup(BaseName(name));
char *w = Which(Getenv("PATH"), gProgName);
gProgPath = StrDup(DirName(w));
delete [] w;
}
}
//______________________________________________________________________________
void TUnixSystem::SetDisplay()
{
// Set DISPLAY environment variable based on utmp entry. Only for UNIX.
if (!Getenv("DISPLAY")) {
char *tty = ::ttyname(0); // device user is logged in on
if (tty) {
tty += 5; // remove "/dev/"
R__LOCKGUARD2(gSystemMutex);
STRUCT_UTMP *utmp_entry = (STRUCT_UTMP *)SearchUtmpEntry(ReadUtmpFile(), tty);
if (utmp_entry) {
if (utmp_entry->ut_host[0])
if (strchr(utmp_entry->ut_host, ':')) {
Setenv("DISPLAY", utmp_entry->ut_host);
Warning("SetDisplay", "DISPLAY not set, setting it to %s",
utmp_entry->ut_host);
} else {
char disp[64];
sprintf(disp, "%s:0.0", utmp_entry->ut_host);
Setenv("DISPLAY", disp);
Warning("SetDisplay", "DISPLAY not set, setting it to %s",
disp);
}
#ifndef UTMP_NO_ADDR
else if (utmp_entry->ut_addr) {
struct hostent *he;
if ((he = gethostbyaddr((const char*)&utmp_entry->ut_addr,
sizeof(utmp_entry->ut_addr), AF_INET))) {
char disp[64];
sprintf(disp, "%s:0.0", he->h_name);
Setenv("DISPLAY", disp);
Warning("SetDisplay", "DISPLAY not set, setting it to %s",
disp);
}
}
#endif
}
free(gUtmpContents);
}
}
}
//______________________________________________________________________________
const char *TUnixSystem::GetError()
{
// Return system error string.
Int_t err = GetErrno();
if (err == 0 && fLastErrorString != "")
return fLastErrorString;
#if defined(R__SOLARIS) || defined (R__LINUX) || defined(R__AIX) || \
defined(R__FBSD) || defined(R__OBSD) || defined(R__HURD)
return strerror(err);
#else
if (err < 0 || err >= sys_nerr)
return Form("errno out of range %d", err);
return sys_errlist[err];
#endif
}
//______________________________________________________________________________
const char *TUnixSystem::HostName()
{
// Return the system's host name.
if (fHostname == "") {
char hn[64];
#if defined(R__SOLARIS) && !defined(R__KCC)
sysinfo(SI_HOSTNAME, hn, sizeof(hn));
#else
gethostname(hn, sizeof(hn));
#endif
fHostname = hn;
}
return (const char *)fHostname;
}
//---- EventLoop ---------------------------------------------------------------
//______________________________________________________________________________
void TUnixSystem::AddFileHandler(TFileHandler *h)
{
// Add a file handler to the list of system file handlers. Only adds
// the handler if it is not already in the list of file handlers.
R__LOCKGUARD2(gSystemMutex);
TSystem::AddFileHandler(h);
if (h) {
int fd = h->GetFd();
if (h->HasReadInterest()) {
fReadmask->Set(fd);
fMaxrfd = TMath::Max(fMaxrfd, fd);
}
if (h->HasWriteInterest()) {
fWritemask->Set(fd);
fMaxwfd = TMath::Max(fMaxwfd, fd);
}
}
}
//______________________________________________________________________________
TFileHandler *TUnixSystem::RemoveFileHandler(TFileHandler *h)
{
// Remove a file handler from the list of file handlers. Returns
// the handler or 0 if the handler was not in the list of file handlers.
if (!h) return 0;
R__LOCKGUARD2(gSystemMutex);
TFileHandler *oh = TSystem::RemoveFileHandler(h);
if (oh) { // found
TFileHandler *th;
TIter next(fFileHandler);
fMaxrfd = 0;
fMaxwfd = 0;
fReadmask->Zero();
fWritemask->Zero();
while ((th = (TFileHandler *) next())) {
int fd = th->GetFd();
if (th->HasReadInterest()) {
fReadmask->Set(fd);
fMaxrfd = TMath::Max(fMaxrfd, fd);
}
if (th->HasWriteInterest()) {
fWritemask->Set(fd);
fMaxwfd = TMath::Max(fMaxwfd, fd);
}
}
}
return oh;
}
//______________________________________________________________________________
void TUnixSystem::AddSignalHandler(TSignalHandler *h)
{
// Add a signal handler to list of system signal handlers. Only adds
// the handler if it is not already in the list of signal handlers.
R__LOCKGUARD2(gSystemMutex);
TSystem::AddSignalHandler(h);
UnixSignal(h->GetSignal(), SigHandler);
}
//______________________________________________________________________________
TSignalHandler *TUnixSystem::RemoveSignalHandler(TSignalHandler *h)
{
// Remove a signal handler from list of signal handlers. Returns
// the handler or 0 if the handler was not in the list of signal handlers.
if (!h) return 0;
R__LOCKGUARD2(gSystemMutex);
TSignalHandler *oh = TSystem::RemoveSignalHandler(h);
Bool_t last = kTRUE;
TSignalHandler *hs;
TIter next(fSignalHandler);
while ((hs = (TSignalHandler*) next())) {
if (hs->GetSignal() == h->GetSignal())
last = kFALSE;
}
if (last)
ResetSignal(h->GetSignal(), kTRUE);
return oh;
}
//______________________________________________________________________________
void TUnixSystem::ResetSignal(ESignals sig, Bool_t reset)
{
// If reset is true reset the signal handler for the specified signal
// to the default handler, else restore previous behaviour.
if (reset)
UnixResetSignal(sig);
else
UnixSignal(sig, SigHandler);
}
//______________________________________________________________________________
void TUnixSystem::IgnoreSignal(ESignals sig, Bool_t ignore)
{
// If ignore is true ignore the specified signal, else restore previous
// behaviour.
UnixIgnoreSignal(sig, ignore);
}
//______________________________________________________________________________
void TUnixSystem::SigAlarmInterruptsSyscalls(Bool_t set)
{
// When the argument is true the SIGALRM signal handler is set so that
// interrupted syscalls will not be restarted by the kernel. This is
// typically used in case one wants to put a timeout on an I/O operation.
// By default interrupted syscalls will always be restarted (for all
// signals). This can be controlled for each a-synchronous TTimer via
// the method TTimer::SetInterruptSyscalls().
UnixSigAlarmInterruptsSyscalls(set);
}
//______________________________________________________________________________
Int_t TUnixSystem::GetFPEMask()
{
// Return the bitmap of conditions that trigger a floating point exception.
Int_t mask = 0;
#if defined(R__LINUX) && !defined(__powerpc__)
#if defined(__GLIBC__) && (__GLIBC__>2 || __GLIBC__==2 && __GLIBC_MINOR__>=1)
fenv_t oldenv;
fegetenv(&oldenv);
fesetenv(&oldenv);
#ifdef __alpha__
ULong_t oldmask = ~oldenv;
#elif __ia64__
Int_t oldmask = ~oldenv;
#else
Int_t oldmask = ~oldenv.__control_word;
#endif
if (oldmask & FE_INVALID ) mask |= kInvalid;
if (oldmask & FE_DIVBYZERO) mask |= kDivByZero;
if (oldmask & FE_OVERFLOW ) mask |= kOverflow;
if (oldmask & FE_UNDERFLOW) mask |= kUnderflow;
if (oldmask & FE_INEXACT ) mask |= kInexact;
#endif
#endif
#if defined(R__MACOSX) && !defined(__xlC__) && !defined(__i386__)
Long64_t oldmask;
fegetenvd(oldmask);
if (oldmask & FE_ENABLE_INVALID ) mask |= kInvalid;
if (oldmask & FE_ENABLE_DIVBYZERO) mask |= kDivByZero;
if (oldmask & FE_ENABLE_OVERFLOW ) mask |= kOverflow;
if (oldmask & FE_ENABLE_UNDERFLOW) mask |= kUnderflow;
if (oldmask & FE_ENABLE_INEXACT ) mask |= kInexact;
#endif
return mask;
}
//______________________________________________________________________________
Int_t TUnixSystem::SetFPEMask(Int_t mask)
{
// Set which conditions trigger a floating point exception.
// Return the previous set of conditions.
if (mask) { } // use mask to avoid warning
Int_t old = GetFPEMask();
#if defined(R__LINUX) && !defined(__powerpc__)
#if defined(__GLIBC__) && (__GLIBC__>2 || __GLIBC__==2 && __GLIBC_MINOR__>=1)
Int_t newm = 0;
if (mask & kInvalid ) newm |= FE_INVALID;
if (mask & kDivByZero) newm |= FE_DIVBYZERO;
if (mask & kOverflow ) newm |= FE_OVERFLOW;
if (mask & kUnderflow) newm |= FE_UNDERFLOW;
if (mask & kInexact ) newm |= FE_INEXACT;
fenv_t cur;
fegetenv(&cur);
#if defined __ia64__ || defined __alpha__
cur &= ~newm;
#else
cur.__control_word &= ~newm;
#endif
fesetenv(&cur);
#endif
#endif
#if defined(R__MACOSX) && !defined(__xlC__) && !defined(__i386__)
Int_t newm = 0;
if (mask & kInvalid ) newm |= FE_ENABLE_INVALID;
if (mask & kDivByZero) newm |= FE_ENABLE_DIVBYZERO;
if (mask & kOverflow ) newm |= FE_ENABLE_OVERFLOW;
if (mask & kUnderflow) newm |= FE_ENABLE_UNDERFLOW;
if (mask & kInexact ) newm |= FE_ENABLE_INEXACT;
Long64_t curmask;
fegetenvd(curmask);
curmask = (curmask & ~FE_ENABLE_ALL_EXCEPT) | newm;
fesetenvd(curmask);
#endif
return old;
}
//______________________________________________________________________________
void TUnixSystem::DispatchOneEvent(Bool_t pendingOnly)
{
// Dispatch a single event.
Bool_t pollOnce = pendingOnly;
while (1) {
// first handle any X11 events
if (gXDisplay && gXDisplay->Notify()) {
if (fReadready->IsSet(gXDisplay->GetFd())) {
fReadready->Clr(gXDisplay->GetFd());
fNfd--;
}
if (!pendingOnly) return;
}
// check for file descriptors ready for reading/writing
if (fNfd > 0 && fFileHandler && fFileHandler->GetSize() > 0)
if (CheckDescriptors())
if (!pendingOnly) return;
fNfd = 0;
fReadready->Zero();
fWriteready->Zero();
// check synchronous signals
if (fSigcnt > 0 && fSignalHandler->GetSize() > 0)
if (CheckSignals(kTRUE))
if (!pendingOnly) return;
fSigcnt = 0;
fSignals->Zero();
// check synchronous timers
if (fTimers && fTimers->GetSize() > 0)
if (DispatchTimers(kTRUE)) {
// prevent timers from blocking file descriptor monitoring
Long_t to = NextTimeOut(kTRUE);
if (to > kItimerResolution || to == -1)
return;
}
// if in pendingOnly mode poll once file descriptor activity
Long_t nextto = NextTimeOut(kTRUE);
if (pendingOnly) {
if (pollOnce && fFileHandler && fFileHandler->GetSize() > 0) {
nextto = 0;
pollOnce = kFALSE;
} else
return;
}
// nothing ready, so setup select call
*fReadready = *fReadmask;
*fWriteready = *fWritemask;
int mxfd = TMath::Max(fMaxrfd, fMaxwfd) + 1;
fNfd = UnixSelect(mxfd, fReadready, fWriteready, nextto);
if (fNfd < 0 && fNfd != -2) {
int fd, rc;
TFdSet t;
for (fd = 0; fd < mxfd; fd++) {
t.Set(fd);
if (fReadmask->IsSet(fd)) {
rc = UnixSelect(fd+1, &t, 0, 0);
if (rc < 0 && rc != -2) {
SysError("DispatchOneEvent", "select: read error on %d\n", fd);
fReadmask->Clr(fd);
}
}
if (fWritemask->IsSet(fd)) {
rc = UnixSelect(fd+1, 0, &t, 0);
if (rc < 0 && rc != -2) {
SysError("DispatchOneEvent", "select: write error on %d\n", fd);
fWritemask->Clr(fd);
}
}
t.Clr(fd);
}
}
}
}
//______________________________________________________________________________
void TUnixSystem::Sleep(UInt_t milliSec)
{
// Sleep milliSec milliseconds.
struct timeval tv;
tv.tv_sec = milliSec / 1000;
tv.tv_usec = (milliSec % 1000) * 1000;
select(0, 0, 0, 0, &tv);
}
//______________________________________________________________________________
Int_t TUnixSystem::Select(TList *act, Long_t to)
{
// Select on file descriptors. The timeout to is in millisec.
Int_t rc = -4;
TFdSet rd, wr;
Int_t mxfd = -1;
TIter next(act);
TFileHandler *h = 0;
while ((h = (TFileHandler *) next())) {
Int_t fd = h->GetFd();
if (fd > -1) {
if (h->HasReadInterest()) {
rd.Set(fd);
mxfd = TMath::Max(mxfd, fd);
}
if (h->HasWriteInterest()) {
wr.Set(fd);
mxfd = TMath::Max(mxfd, fd);
}
h->ResetReadyMask();
}
}
if (mxfd > -1)
rc = UnixSelect(mxfd+1, &rd, &wr, to);
// Set readiness bits
if (rc > 0) {
next.Reset();
while ((h = (TFileHandler *) next())) {
Int_t fd = h->GetFd();
if (rd.IsSet(fd))
h->SetReadReady();
if (wr.IsSet(fd))
h->SetWriteReady();
}
}
return rc;
}
//______________________________________________________________________________
Int_t TUnixSystem::Select(TFileHandler *h, Long_t to)
{
// Select on the file descriptor related to file handler h.
// The timeout to is in millisec.
Int_t rc = -4;
TFdSet rd, wr;
Int_t mxfd = -1;
Int_t fd = -1;
if (h) {
fd = h->GetFd();
if (fd > -1) {
if (h->HasReadInterest())
rd.Set(fd);
if (h->HasWriteInterest())
wr.Set(fd);
h->ResetReadyMask();
mxfd = fd;
rc = UnixSelect(mxfd+1, &rd, &wr, to);
}
}
// Fill output lists, if required
if (rc > 0) {
if (rd.IsSet(fd))
h->SetReadReady();
if (wr.IsSet(fd))
h->SetWriteReady();
}
return rc;
}
//---- handling of system events -----------------------------------------------
//______________________________________________________________________________
void TUnixSystem::DispatchSignals(ESignals sig)
{
// Handle and dispatch signals.
switch (sig) {
case kSigAlarm:
DispatchTimers(kFALSE);
break;
case kSigChild:
CheckChilds();
return;
case kSigBus:
case kSigSegmentationViolation:
case kSigIllegalInstruction:
case kSigFloatingException:
Break("TUnixSystem::DispatchSignals", UnixSigname(sig));
StackTrace();
if (TROOT::Initialized()) {
if (gException) {
if (gApplication && gApplication->InheritsFrom("TRint")) {
Getlinem(kCleanUp, 0);
Getlinem(kInit, "Root > ");
}
gInterpreter->RewindDictionary();
gInterpreter->ClearFileBusy();
}
Throw(sig);
}
Abort(-1);
break;
case kSigSystem:
case kSigPipe:
Break("TUnixSystem::DispatchSignals", UnixSigname(sig));
break;
case kSigWindowChanged:
Gl_windowchanged();
break;
default:
fSignals->Set(sig);
fSigcnt++;
break;
}
// check a-synchronous signals
if (fSigcnt > 0 && fSignalHandler->GetSize() > 0)
CheckSignals(kFALSE);
}
//______________________________________________________________________________
Bool_t TUnixSystem::CheckSignals(Bool_t sync)
{
// Check if some signals were raised and call their Notify() member.
TSignalHandler *sh;
Int_t sigdone = -1;
{
TOrdCollectionIter it((TOrdCollection*)fSignalHandler);
while ((sh = (TSignalHandler*)it.Next())) {
if (sync == sh->IsSync()) {
ESignals sig = sh->GetSignal();
if ((fSignals->IsSet(sig) && sigdone == -1) || sigdone == sig) {
if (sigdone == -1) {
fSignals->Clr(sig);
sigdone = sig;
fSigcnt--;
}
if (sh->IsActive())
sh->Notify();
}
}
}
}
if (sigdone != -1)
return kTRUE;
return kFALSE;
}
//______________________________________________________________________________
void TUnixSystem::CheckChilds()
{
// Check if childs have finished.
#if 0 //rdm
int pid;
while ((pid = UnixWaitchild()) > 0) {
TIter next(zombieHandler);
register UnixPtty *pty;
while (pty = (UnixPtty*) next())
if (pty->GetPid() == pid) {
zombieHandler->RemovePtr(pty);
pty->DiedNotify();
}
}
#endif
}
//______________________________________________________________________________
Bool_t TUnixSystem::CheckDescriptors()
{
// Check if there is activity on some file descriptors and call their
// Notify() member.
TFileHandler *fh;
Int_t fddone = -1;
Bool_t read = kFALSE;
#if defined(R__LINUX) && defined(__alpha__)
// TOrdCollectionIter it(...) causes segv ?!?!? Also TIter fails.
Int_t cursor = 0;
while (cursor < fFileHandler->GetSize()) {
fh = (TFileHandler*) fFileHandler->At(cursor++);
#else
TOrdCollectionIter it((TOrdCollection*)fFileHandler);
while ((fh = (TFileHandler*) it.Next())) {
#endif
Int_t fd = fh->GetFd();
if ((fd <= fMaxrfd && fReadready->IsSet(fd) && fddone == -1) ||
(fddone == fd && read)) {
if (fddone == -1) {
fReadready->Clr(fd);
fddone = fd;
read = kTRUE;
fNfd--;
}
if (fh->IsActive())
fh->ReadNotify();
}
if ((fd <= fMaxwfd && fWriteready->IsSet(fd) && fddone == -1) ||
(fddone == fd && !read)) {
if (fddone == -1) {
fWriteready->Clr(fd);
fddone = fd;
read = kFALSE;
fNfd--;
}
if (fh->IsActive())
fh->WriteNotify();
}
}
if (fddone != -1)
return kTRUE;
return kFALSE;
}
//---- Directories -------------------------------------------------------------
//______________________________________________________________________________
int TUnixSystem::MakeDirectory(const char *name)
{
// Make a Unix file system directory. Returns 0 in case of success and
// -1 if the directory could not be created.
TSystem *helper = FindHelper(name);
if (helper)
return helper->MakeDirectory(name);
return UnixMakedir(name);
}
//______________________________________________________________________________
void *TUnixSystem::OpenDirectory(const char *name)
{
// Open a Unix file system directory. Returns 0 if directory does not exist.
TSystem *helper = FindHelper(name);
if (helper)
return helper->OpenDirectory(name);
return UnixOpendir(name);
}
//______________________________________________________________________________
void TUnixSystem::FreeDirectory(void *dirp)
{
// Close a Unix file system directory.
TSystem *helper = FindHelper(0, dirp);
if (helper) {
helper->FreeDirectory(dirp);
return;
}
if (dirp)
::closedir((DIR*)dirp);
}
//______________________________________________________________________________
const char *TUnixSystem::GetDirEntry(void *dirp)
{
// Get next Unix file system directory entry. Returns 0 if no more entries.
TSystem *helper = FindHelper(0, dirp);
if (helper)
return helper->GetDirEntry(dirp);
if (dirp)
return UnixGetdirentry(dirp);
return 0;
}
//______________________________________________________________________________
Bool_t TUnixSystem::ChangeDirectory(const char *path)
{
// Change directory. Returns kTRUE in case of success, kFALSE otherwise.
Bool_t ret = (Bool_t) (::chdir(path) == 0);
if (fWdpath != "")
fWdpath = ""; // invalidate path cache
return ret;
}
//______________________________________________________________________________
const char *TUnixSystem::WorkingDirectory()
{
// Return working directory.
if (fWdpath != "")
return fWdpath.Data();
R__LOCKGUARD2(gSystemMutex);
static char cwd[kMAXPATHLEN];
if (::getcwd(cwd, kMAXPATHLEN) == 0) {
fWdpath = "/";
Error("WorkingDirectory", "getcwd() failed");
}
fWdpath = cwd;
return fWdpath.Data();
}
//______________________________________________________________________________
const char *TUnixSystem::HomeDirectory(const char *userName)
{
// Return the user's home directory.
return UnixHomedirectory(userName);
}
//______________________________________________________________________________
const char *TUnixSystem::TempDirectory() const
{
// Return a user configured or systemwide directory to create
// temporary files in.
const char *dir = gSystem->Getenv("TMPDIR");
if (!dir || gSystem->AccessPathName(dir, kWritePermission))
dir = "/tmp";
return dir;
}
//______________________________________________________________________________
FILE *TUnixSystem::TempFileName(TString &base, const char *dir)
{
// Create a secure temporary file by appending a unique
// 6 letter string to base. The file will be created in
// a standard (system) directory or in the directory
// provided in dir. The full filename is returned in base
// and a filepointer is returned for safely writing to the file
// (this avoids certain security problems). Returns 0 in case
// of error.
char *b = ConcatFileName(dir ? dir : TempDirectory(), base);
base = b;
base += "XXXXXX";
delete [] b;
char *arg = StrDup(base);
int fd = mkstemp(arg);
base = arg;
delete [] arg;
if (fd == -1) {
SysError("TempFileName", "%s", base.Data() );
return 0;
} else {
FILE *fp = fdopen(fd, "w+");
if (fp == 0) SysError("TempFileName", "converting filedescriptor (%d)", fd);
return fp;
}
}
//______________________________________________________________________________
char *TUnixSystem::ConcatFileName(const char *dir, const char *name)
{
// Concatenate a directory and a file name. Returned string must be
// deleted by user.
if (name == 0 || strlen(name) <= 0 || strcmp(name, ".") == 0)
return StrDup(dir);
TString buf;
if (dir && (strcmp(dir, "/") != 0)) {
buf = dir;
if (dir[strlen(dir)-1] == '/')
buf += name;
else {
buf += "/";
buf += name;
};
} else {
buf = "/";
buf +=name; // sprintf(buf, "/%s", name);
}
return StrDup(buf.Data());
}
//---- Paths & Files -----------------------------------------------------------
//______________________________________________________________________________
Bool_t TUnixSystem::AccessPathName(const char *path, EAccessMode mode)
{
// Returns FALSE if one can access a file using the specified access mode.
// Mode is the same as for the Unix access(2) function.
// Attention, bizarre convention of return value!!
TSystem *helper = FindHelper(path);
if (helper)
return helper->AccessPathName(path, mode);
if (::access(path, mode) == 0)
return kFALSE;
fLastErrorString = GetError();
return kTRUE;
}
//______________________________________________________________________________
int TUnixSystem::CopyFile(const char *f, const char *t, Bool_t overwrite)
{
// Copy a file. If overwrite is true and file already exists the
// file will be overwritten. Returns 0 when successful, -1 in case
// of failure, -2 in case the file already exists and overwrite was false.
if (AccessPathName(f, kReadPermission))
return -1;
if (!AccessPathName(t) && !overwrite)
return -2;
int ret = Exec(Form("cp -f %s %s", f, t));
if (ret)
return -1;
return 0;
}
//______________________________________________________________________________
int TUnixSystem::Rename(const char *f, const char *t)
{
// Rename a file. Returns 0 when successful, -1 in case of failure.
int ret = ::rename(f, t);
fLastErrorString = GetError();
return ret;
}
//______________________________________________________________________________
int TUnixSystem::GetPathInfo(const char *path, FileStat_t &buf)
{
// Get info about a file. Info is returned in the form of a FileStat_t
// structure (see TSystem.h).
// The function returns 0 in case of success and 1 if the file could
// not be stat'ed.
TSystem *helper = FindHelper(path);
if (helper)
return helper->GetPathInfo(path, buf);
return UnixFilestat(path, buf);
}
//______________________________________________________________________________
int TUnixSystem::GetFsInfo(const char *path, Long_t *id, Long_t *bsize,
Long_t *blocks, Long_t *bfree)
{
// Get info about a file system: id, bsize, bfree, blocks.
// Id is file system type (machine dependend, see statfs())
// Bsize is block size of file system
// Blocks is total number of blocks in file system
// Bfree is number of free blocks in file system
// The function returns 0 in case of success and 1 if the file system could
// not be stat'ed.
return UnixFSstat(path, id, bsize, blocks, bfree);
}
//______________________________________________________________________________
int TUnixSystem::Link(const char *from, const char *to)
{
// Create a link from file1 to file2. Returns 0 when successful,
// -1 in case of failure.
return ::link(from, to);
}
//______________________________________________________________________________
int TUnixSystem::Symlink(const char *from, const char *to)
{
// Create a symlink from file1 to file2. Returns 0 when succesfull,
// -1 in case of failure.
#if defined(R__AIX)
return ::symlink((char*)from, (char*)to);
#else
return ::symlink(from, to);
#endif
}
//______________________________________________________________________________
int TUnixSystem::Unlink(const char *name)
{
// Unlink, i.e. remove, a file or directory. Returns 0 when succesfull,
// -1 in case of failure.
struct stat finfo;
if (lstat(name, &finfo) < 0)
return -1;
if (S_ISDIR(finfo.st_mode))
return ::rmdir(name);
else
return ::unlink(name);
}
//---- expand the metacharacters as in the shell -------------------------------
// expand the metacharacters as in the shell
static const char
#ifdef G__OLDEXPAND
kShellEscape = '\\',
*kShellStuff = "(){}<>\"'",
#endif
*kShellMeta = "~*[]{}?$";
#ifndef G__OLDEXPAND
//______________________________________________________________________________
Bool_t TUnixSystem::ExpandPathName(TString &path)
{
// Expand a pathname getting rid of special shell characters like ~.$, etc.
// For Unix/Win32 compatibility use $(XXX) instead of $XXX when using
// environment variables in a pathname. If compatibility is not an issue
// you can use on Unix directly $XXX.
const char *p, *patbuf = (const char *)path;
// skip leading blanks
while (*patbuf == ' ')
patbuf++;
// any shell meta characters ?
for (p = patbuf; *p; p++)
if (strchr(kShellMeta, *p))
goto expand;
return kFALSE;
expand:
// replace $(XXX) by $XXX
path.ReplaceAll("$(","$");
path.ReplaceAll(")","");
path = ExpandFileName(path.Data());
return kFALSE;
}
#endif
#ifdef G__OLDEXPAND
//______________________________________________________________________________
Bool_t TUnixSystem::ExpandPathName(TString &patbuf0)
{
// Expand a pathname getting rid of special shell characters like ~.$, etc.
// For Unix/Win32 compatibility use $(XXX) instead of $XXX when using
// environment variables in a pathname. If compatibility is not an issue
// you can use on Unix directly $XXX.
const char *patbuf = (const char *)patbuf0;
const char *hd, *p;
// char cmd[kMAXPATHLEN],
char stuffedPat[kMAXPATHLEN], name[70];
char *q;
FILE *pf;
int ch;
// skip leading blanks
while (*patbuf == ' ')
patbuf++;
// any shell meta characters ?
for (p = patbuf; *p; p++)
if (strchr(kShellMeta, *p))
goto needshell;
return kFALSE;
needshell:
// replace $(XXX) by $XXX
patbuf0.ReplaceAll("$(","$");
patbuf0.ReplaceAll(")","");
// escape shell quote characters
EscChar(patbuf, stuffedPat, sizeof(stuffedPat), (char*)kShellStuff, kShellEscape);
#ifdef R__HPUX
TString cmd("/bin/echo ");
#else
TString cmd("echo ");
#endif
// emulate csh -> popen executes sh
if (stuffedPat[0] == '~') {
if (stuffedPat[1] != '\0' && stuffedPat[1] != '/') {
// extract user name
for (p = &stuffedPat[1], q = name; *p && *p !='/';)
*q++ = *p++;
*q = '\0';
hd = UnixHomedirectory(name);
if (hd == 0)
cmd += stuffedPat;
else {
cmd += hd;
cmd += p;
}
} else {
hd = UnixHomedirectory(0);
if (hd == 0) {
fLastErrorString = GetError();
return kTRUE;
}
cmd += hd;
cmd += &stuffedPat[1];
}
} else
cmd += stuffedPat;
if ((pf = ::popen(cmd.Data(), "r")) == 0) {
fLastErrorString = GetError();
return kTRUE;
}
// read first argument
patbuf0 = "";
int cnt = 0;
#if defined(R__ALPHA) || defined(R__AIX)
again:
#endif
for (ch = fgetc(pf); ch != EOF && ch != ' ' && ch != '\n'; ch = fgetc(pf)) {
patbuf0.Append(ch);
cnt++;
}
#if defined(R__ALPHA) || defined(R__AIX)
// Work around bug timing problem due to delay in forking a large program
if (cnt == 0 && ch == EOF) goto again;
#endif
// skip rest of pipe
while (ch != EOF) {
ch = fgetc(pf);
if (ch == ' ' || ch == '\t') {
fLastErrorString = "expression ambigous";
::pclose(pf);
return kTRUE;
}
}
::pclose(pf);
return kFALSE;
}
#endif
//______________________________________________________________________________
char *TUnixSystem::ExpandPathName(const char *path)
{
// Expand a pathname getting rid of special shell characaters like ~.$, etc.
// For Unix/Win32 compatibility use $(XXX) instead of $XXX when using
// environment variables in a pathname. If compatibility is not an issue
// you can use on Unix directly $XXX. The user must delete returned string.
TString patbuf = path;
if (ExpandPathName(patbuf))
return 0;
return StrDup(patbuf.Data());
}
//______________________________________________________________________________
int TUnixSystem::Chmod(const char *file, UInt_t mode)
{
// Set the file permission bits. Returns -1 in case or error, 0 otherwise.
return ::chmod(file, mode);
}
//______________________________________________________________________________
int TUnixSystem::Umask(Int_t mask)
{
// Set the process file creation mode mask.
return ::umask(mask);
}
//______________________________________________________________________________
int TUnixSystem::Utime(const char *file, Long_t modtime, Long_t actime)
{
// Set a files modification and access times. If actime = 0 it will be
// set to the modtime. Returns 0 on success and -1 in case of error.
if (!actime)
actime = modtime;
struct utimbuf t;
t.actime = (time_t)actime;
t.modtime = (time_t)modtime;
return ::utime(file, &t);
}
//______________________________________________________________________________
char *TUnixSystem::Which(const char *search, const char *wfil, EAccessMode mode)
{
// Find location of file "wfil" in a search path.
// The search path is specified as a : separated list of directories.
// User must delete returned string. Returns 0 in case file is not found.
char name[kMAXPATHLEN], file[kMAXPATHLEN];
const char *ptr;
char *next, *exname;
struct stat finfo;
exname = gSystem->ExpandPathName(wfil);
if (exname)
strcpy(file, exname);
else
file[0] = 0;
delete [] exname;
if (file[0] == '/') {
exname = StrDup(file);
if (exname && access(exname, mode) == 0 &&
stat(exname, &finfo) == 0 && S_ISREG(finfo.st_mode)) {
if (gEnv->GetValue("Root.ShowPath", 0))
Printf("Which: %s = %s", wfil, exname);
return exname;
}
delete [] exname;
if (gEnv->GetValue("Root.ShowPath", 0))
Printf("Which: %s = <not found>", wfil);
return 0;
}
if (search == 0)
search = ".";
for (ptr = search; *ptr;) {
for (next = name; *ptr && *ptr != ':'; )
*next++ = *ptr++;
*next = '\0';
if (name[0] != '/' && name[0] != '$' && name[0] != '~') {
char tmp[kMAXPATHLEN];
strcpy(tmp, name);
strcpy(name, gSystem->WorkingDirectory());
strcat(name, "/");
strcat(name, tmp);
}
if (*(name + strlen(name) - 1) != '/')
strcat(name, "/");
strcat(name, file);
exname = gSystem->ExpandPathName(name);
if (exname && access(exname, mode) == 0 &&
stat(exname, &finfo) == 0 && S_ISREG(finfo.st_mode)) {
if (gEnv->GetValue("Root.ShowPath", 0))
Printf("Which: %s = %s", wfil, exname);
return exname;
}
delete [] exname;
if (*ptr)
ptr++;
}
if (gEnv->GetValue("Root.ShowPath", 0))
Printf("Which: %s = <not found>", wfil);
return 0;
}
//---- Users & Groups ----------------------------------------------------------
//______________________________________________________________________________
Int_t TUnixSystem::GetUid(const char *user)
{
// Returns the user's id. If user = 0, returns current user's id.
if (!user || !user[0])
return getuid();
else {
struct passwd *pwd = getpwnam(user);
if (pwd)
return pwd->pw_uid;
}
return 0;
}
//______________________________________________________________________________
Int_t TUnixSystem::GetEffectiveUid()
{
// Returns the effective user id. The effective id corresponds to the
// set id bit on the file being executed.
return geteuid();
}
//______________________________________________________________________________
Int_t TUnixSystem::GetGid(const char *group)
{
// Returns the group's id. If group = 0, returns current user's group.
if (!group || !group[0])
return getgid();
else {
struct group *grp = getgrnam(group);
if (grp)
return grp->gr_gid;
}
return 0;
}
//______________________________________________________________________________
Int_t TUnixSystem::GetEffectiveGid()
{
// Returns the effective group id. The effective group id corresponds
// to the set id bit on the file being executed.
return getegid();
}
//______________________________________________________________________________
UserGroup_t *TUnixSystem::GetUserInfo(Int_t uid)
{
// Returns all user info in the UserGroup_t structure. The returned
// structure must be deleted by the user. In case of error 0 is returned.
struct passwd *pwd = getpwuid(uid);
if (pwd) {
UserGroup_t *ug = new UserGroup_t;
ug->fUid = pwd->pw_uid;
ug->fGid = pwd->pw_gid;
ug->fUser = pwd->pw_name;
ug->fPasswd = pwd->pw_passwd;
ug->fRealName = pwd->pw_gecos;
ug->fShell = pwd->pw_shell;
UserGroup_t *gr = GetGroupInfo(pwd->pw_gid);
if (gr) ug->fGroup = gr->fGroup;
delete gr;
return ug;
}
return 0;
}
//______________________________________________________________________________
UserGroup_t *TUnixSystem::GetUserInfo(const char *user)
{
// Returns all user info in the UserGroup_t structure. If user = 0, returns
// current user's id info. The returned structure must be deleted by the
// user. In case of error 0 is returned.
return GetUserInfo(GetUid(user));
}
//______________________________________________________________________________
UserGroup_t *TUnixSystem::GetGroupInfo(Int_t gid)
{
// Returns all group info in the UserGroup_t structure. The only active
// fields in the UserGroup_t structure for this call are:
// fGid and fGroup
// The returned structure must be deleted by the user. In case of
// error 0 is returned.
struct group *grp = getgrgid(gid);
if (grp) {
UserGroup_t *gr = new UserGroup_t;
gr->fUid = 0;
gr->fGid = grp->gr_gid;
gr->fGroup = grp->gr_name;
return gr;
}
return 0;
}
//______________________________________________________________________________
UserGroup_t *TUnixSystem::GetGroupInfo(const char *group)
{
// Returns all group info in the UserGroup_t structure. The only active
// fields in the UserGroup_t structure for this call are:
// fGid and fGroup
// If group = 0, returns current user's group. The returned structure
// must be deleted by the user. In case of error 0 is returned.
return GetGroupInfo(GetGid(group));
}
//---- environment manipulation ------------------------------------------------
//______________________________________________________________________________
void TUnixSystem::Setenv(const char *name, const char *value)
{
// Set environment variable. The string passed will be owned by
// the environment and can not be reused till a "name" is set
// again. The solution below will lose the space for the string
// in that case, but if this functions is not called thousands
// of times that should not be a problem.
char *s = new char [strlen(name)+strlen(value) + 2];
sprintf(s, "%s=%s", name, value);
::putenv(s);
}
//______________________________________________________________________________
const char *TUnixSystem::Getenv(const char *name)
{
// Get environment variable.
return ::getenv(name);
}
//---- Processes ---------------------------------------------------------------
//______________________________________________________________________________
int TUnixSystem::Exec(const char *shellcmd)
{
// Execute a command.
return ::system(shellcmd);
}
//______________________________________________________________________________
FILE *TUnixSystem::OpenPipe(const char *command, const char *mode)
{
// Open a pipe.
return ::popen(command, mode);
}
//______________________________________________________________________________
int TUnixSystem::ClosePipe(FILE *pipe)
{
// Close the pipe.
return ::pclose(pipe);
}
//______________________________________________________________________________
int TUnixSystem::GetPid()
{
// Get process id.
return ::getpid();
}
//______________________________________________________________________________
void TUnixSystem::Exit(int code, Bool_t mode)
{
// Exit the application.
// Insures that the files and sockets are closed before any library is unloaded!
if (gROOT) {
if (gROOT->GetListOfFiles()) gROOT->GetListOfFiles()->Delete("slow");
if (gROOT->GetListOfSockets()) gROOT->GetListOfSockets()->Delete();
if (gROOT->GetListOfMappedFiles()) gROOT->GetListOfMappedFiles()->Delete("slow");
}
if (mode)
::exit(code);
else
::_exit(code);
}
//______________________________________________________________________________
void TUnixSystem::Abort(int)
{
// Abort the application.
::abort();
}
//______________________________________________________________________________
void TUnixSystem::StackTrace()
{
// Print a stack trace.
if (!gEnv->GetValue("Root.Stacktrace", 1))
return;
cerr.flush ();
fflush (stderr);
int fd = STDERR_FILENO;
const char *message = " Generating stack trace...\n";
if (fd && message) { } // remove unused warning (remove later)
#if defined(HAVE_U_STACK_TRACE) || defined(HAVE_XL_TRBK) // hp-ux, aix
/*
// FIXME: deal with inability to duplicate the file handle
int stderrfd = dup(STDERR_FILENO);
if (stderrfd == -1)
return;
int newfd = dup2(fd, STDERR_FILENO);
if (newfd == -1) {
close (stderrfd);
return;
}
*/
# if defined(HAVE_U_STACK_TRACE) // hp-ux
U_STACK_TRACE();
# elif defined(HAVE_XL_TRBK) // aix
xl__trbk();
# endif
/*
fflush(stderr);
dup2(stderrfd, STDERR_FILENO);
close(newfd);
*/
#elif defined(HAVE_BACKTRACE_SYMBOLS_FD) && defined(HAVE_DLADDR) // linux
// we could have used backtrace_symbols_fd, except its output
// format is pretty bad, so recode that here :-(
// take care of demangling
Bool_t demangle = kTRUE;
// check for c++filt (g++), iccfilt (icc) or eccfilt (ecc)
#if defined(R__INTEL_COMPILER_SKIP)
#if defined(R__B64)
const char *cppfilt = "eccfilt";
#else
const char *cppfilt = "iccfilt";
#endif
#else
const char *cppfilt = "c++filt";
#endif
const char *cppfiltarg = "";
#ifdef R__B64
const char *format1 = " 0x%016lx in %.100s %s 0x%lx from %.100s\n";
const char *format2 = " 0x%016lx in %.100s at %.100s from %.100s\n";
const char *format3 = " 0x%016lx in %.100s from %.100s\n";
const char *format4 = " 0x%016lx in <unknown function>\n";
#else
const char *format1 = " 0x%08lx in %.100s %s 0x%lx from %.100s\n";
const char *format2 = " 0x%08lx in %.100s at %.100s from %.100s\n";
const char *format3 = " 0x%08lx in %.100s from %.100s\n";
const char *format4 = " 0x%08lx in <unknown function>\n";
#endif
char *filter = Which(Getenv("PATH"), cppfilt, kExecutePermission);
if (!filter)
demangle = kFALSE;
#if (__GNUC__ >= 3) && !defined(R__INTEL_COMPILER_SKIP)
// try finding supported format option for g++ v3
if (filter) {
FILE *p = OpenPipe(Form("%s --help 2>&1", filter), "r");
TString help;
while (help.Gets(p)) {
if (help.Index("gnu-v3") != kNPOS) {
cppfiltarg = "--format=gnu-v3";
break;
} else if (help.Index("gnu-new-abi") != kNPOS) {
cppfiltarg = "--format=gnu-new-abi";
break;
}
}
ClosePipe(p);
}
#endif
// addr2line uses debug info to convert addresses into file names
// and line numbers
char *addr2line = Which(Getenv("PATH"), "addr2line", kExecutePermission);
if (addr2line) {
// might take some time so tell what we are doing...
write(fd, message, strlen(message));
}
// open tmp file for demangled stack trace
char tmpf1[L_tmpnam];
ofstream file1;
if (demangle) {
tmpnam(tmpf1);
file1.open(tmpf1);
if (!file1) {
Error("StackTrace", "could not open file %s", tmpf1);
Unlink(tmpf1);
demangle = kFALSE;
}
}
char buffer[2048];
void *trace[kMAX_BACKTRACE_DEPTH];
int depth = backtrace(trace, kMAX_BACKTRACE_DEPTH);
for (int n = 5; n < depth; n++) {
ULong_t addr = (ULong_t) trace[n];
Dl_info info;
if (dladdr(trace[n], &info) && info.dli_fname && info.dli_fname[0]) {
const char *libname = info.dli_fname;
const char *symname = (info.dli_sname && info.dli_sname[0])
? info.dli_sname : "<unknown>";
ULong_t libaddr = (ULong_t) info.dli_fbase;
ULong_t symaddr = (ULong_t) info.dli_saddr;
Bool_t gte = (addr >= symaddr);
ULong_t diff = (gte) ? addr - symaddr : symaddr - addr;
if (addr2line && symaddr) {
ULong_t offset = (addr >= libaddr) ? addr - libaddr :
libaddr - addr;
sprintf(buffer, "%s -e %s 0x%016lx", addr2line, libname, offset);
Bool_t nodebug = kTRUE;
if (FILE *pf = ::popen(buffer, "r")) {
char buf[1024];
if (fgets(buf, 1024, pf)) {
buf[strlen(buf)-1] = 0; // remove trailing \n
if (strncmp(buf, "??", 2)) {
sprintf(buffer, format2, addr, symname, buf, libname);
nodebug = kFALSE;
}
}
::pclose(pf);
}
if (nodebug)
sprintf(buffer, format1, addr, symname,
gte ? "+" : "-", diff, libname);
} else {
if (symaddr)
sprintf(buffer, format1, addr, symname,
gte ? "+" : "-", diff, libname);
else
sprintf(buffer, format3, addr, symname, libname);
}
} else {
sprintf(buffer, format4, addr);
}
if (demangle)
file1 << buffer;
else
write(fd, buffer, ::strlen(buffer));
}
delete [] addr2line;
if (demangle) {
char tmpf2[L_tmpnam];
tmpnam(tmpf2);
file1.close();
sprintf(buffer, "%s %s < %s > %s", filter, cppfiltarg, tmpf1, tmpf2);
system(buffer);
ifstream file2(tmpf2);
TString line;
while (file2) {
line = "";
line.ReadString(file2);
write(fd, line.Data(), line.Length());
}
file2.close();
Unlink(tmpf1);
Unlink(tmpf2);
delete [] filter;
}
#elif defined(PROG_PSTACK) // solaris
# ifdef PROG_CXXFILT
# define CXXFILTER " | " PROG_CXXFILT
# else
# define CXXFILTER
# endif
// 64 should more than plenty for a space and a pid.
char buffer[sizeof(PROG_PSTACK) + 64 + 3 + sizeof(PROG_CXXFILT) + 64];
sprintf(buffer, "%s %lu%s 1>&%d", PROG_PSTACK, (ULong_t) getpid(),
"" CXXFILTER, fd);
buffer[sizeof (buffer)-1] = 0;
system(buffer);
# undef CXXFILTER
#elif defined(HAVE_EXCPT_H) && defined(HAVE_PDSC_H) && \
defined(HAVE_RLD_INTERFACE_H) // tru64
// Tru64 stack walk. Uses the exception handling library and the
// run-time linker's core functions (loader(5)). FIXME: Tru64
// should have _RLD_DLADDR like IRIX below. Verify and update.
char buffer [128];
sigcontext context;
int rc = 0;
exc_capture_context (&context);
while (!rc && context.sc_pc) {
// FIXME: Elf32?
pdsc_crd *func, *base, *crd
= exc_remote_lookup_function_entry(0, 0, context.sc_pc, 0, &func, &base);
Elf32_Addr addr = PDSC_CRD_BEGIN_ADDRESS(base, func);
// const char *name = _rld_address_to_name(addr);
const char *name = "<unknown function>";
sprintf(buffer, " 0x%012lx %.100s + 0x%lx\n",
context.sc_pc, name, context.sc_pc - addr);
write(fd, buffer, ::strlen(buffer));
rc = exc_virtual_unwind(0, &context);
}
#elif defined(HAVE_EXCEPTION_H) && defined(__sgi) // irix
// IRIX stack walk -- like Tru64 but with a little different names.
// NB: The guard above is to protect against unrelated <exception.h>
// provided by some compilers (e.g. KCC 4.0f).
// NB: libexc.h has trace_back_stack and trace_back_stack_and_print
// but their output isn't pretty and nowhere as complete as ours.
char buffer [340];
sigcontext context;
exc_setjmp(&context);
while (context.sc_pc >= 4) {
// Do two lookups, one using exception handling tables and
// another using _RLD_DLADDR, and use the one with a smaller
// offset. For signal handlers we seem to get things wrong:
// _sigtramp's exception range is huge while based on Dl_info
// the offset is small -- but both supposedly describe the
// same thing. Go figure.
char *name = 0;
const char *libname = 0;
const char *symname = 0;
Elf32_Addr offset = ~0L;
// Do the exception/dwarf lookup
Elf32_Addr pc = context.sc_pc;
Dwarf_Fde fde = find_fde_name(&pc, &name);
Dwarf_Addr low_pc = context.sc_pc;
Dwarf_Unsigned udummy;
Dwarf_Signed sdummy;
Dwarf_Ptr pdummy;
Dwarf_Off odummy;
Dwarf_Error err;
symname = name;
// Determine offset using exception descriptor range information.
if (dwarf_get_fde_range(fde, &low_pc, &udummy, &pdummy, &udummy,
&odummy, &sdummy, &odummy, &err) == DW_DLV_OK)
offset = context.sc_pc - low_pc;
// Now do a dladdr() lookup. If the found symbol has the same
// address, trust the more accurate offset from dladdr();
// ignore the looked up mangled symbol name and prefer the
// demangled name produced by find_fde_name(). If we find a
// smaller offset, trust the dynamic symbol as well. Always
// trust the library name even if we can't match it with an
// exact symbol.
Elf32_Addr addr = context.sc_pc;
Dl_info info;
if (_rld_new_interface (_RLD_DLADDR, addr, &info)) {
if (info.dli_fname && info.dli_fname [0])
libname = info.dli_fname;
Elf32_Addr symaddr = (Elf32_Addr) info.dli_saddr;
if (symaddr == low_pc)
offset = addr - symaddr;
else if (info.dli_sname
&& info.dli_sname [0]
&& addr - symaddr < offset) {
offset = addr - symaddr;
symname = info.dli_sname;
}
}
// Print out the result
if (libname && symname)
write(fd, buffer, sprintf
(buffer, " 0x%012lx %.100s + 0x%lx [%.200s]\n",
addr, symname, offset, libname));
else if (symname)
write(fd, buffer, sprintf
(buffer, " 0x%012lx %.100s + 0x%lx\n",
addr, symname, offset));
else
write(fd, buffer, sprintf
(buffer, " 0x%012lx <unknown function>\n", addr));
// Free name from find_fde_name().
free(name);
// Check for termination. exc_unwind() sets context.sc_pc to
// 0 or an error (< 4). However it seems we can't unwind
// through signal stack frames though this is not mentioned in
// the docs; it seems that for those we need to check for
// changed pc after find_fde_name(). That seems to indicate
// end of the post-signal stack frame. (FIXME: Figure out how
// to unwind through signal stack frame, e.g. perhaps using
// sigcontext_t's old pc? Or perhaps we can keep on going
// down without doing the symbol lookup?)
if (pc != context.sc_pc)
break;
exc_unwind(&context, fde);
}
#endif
}
//---- System Logging ----------------------------------------------------------
//______________________________________________________________________________
void TUnixSystem::Openlog(const char *name, Int_t options, ELogFacility facility)
{
// Open connection to system log daemon. For the use of the options and
// facility see the Unix openlog man page.
int fac = 0;
switch (facility) {
case kLogLocal0:
fac = LOG_LOCAL0;
break;
case kLogLocal1:
fac = LOG_LOCAL1;
break;
case kLogLocal2:
fac = LOG_LOCAL2;
break;
case kLogLocal3:
fac = LOG_LOCAL3;
break;
case kLogLocal4:
fac = LOG_LOCAL4;
break;
case kLogLocal5:
fac = LOG_LOCAL5;
break;
case kLogLocal6:
fac = LOG_LOCAL6;
break;
case kLogLocal7:
fac = LOG_LOCAL7;
break;
}
::openlog(name, options, fac);
}
//______________________________________________________________________________
void TUnixSystem::Syslog(ELogLevel level, const char *mess)
{
// Send mess to syslog daemon. Level is the logging level and mess the
// message that will be written on the log.
// ELogLevel matches exactly the Unix values.
::syslog(level, "%s", mess);
}
//______________________________________________________________________________
void TUnixSystem::Closelog()
{
// Close connection to system log daemon.
::closelog();
}
//---- dynamic loading and linking ---------------------------------------------
//______________________________________________________________________________
Func_t TUnixSystem::DynFindSymbol(const char *module, const char *entry)
{
#ifdef NOCINT
return UnixDynFindSymbol(module,entry);
#else
if (module) { } // silence compiler about not using module
return TSystem::DynFindSymbol("*", entry);
#endif
}
//______________________________________________________________________________
int TUnixSystem::Load(const char *module, const char *entry, Bool_t system)
{
// Load a shared library. Returns 0 on successful loading, 1 in
// case lib was already loaded and -1 in case lib does not exist
// or in case of error.
#ifdef NOCINT
int i = UnixDynLoad(module);
if (!entry || !strlen(entry)) return i;
Func_t f = UnixDynFindSymbol(module, entry);
if (f) return 0;
return -1;
#else
return TSystem::Load(module, entry, system);
#endif
}
//______________________________________________________________________________
void TUnixSystem::Unload(const char *module)
{
// Unload a shared library.
#ifdef NOCINT
UnixDynUnload(module);
#else
if (module) { TSystem::Unload(module); }
#endif
}
//______________________________________________________________________________
void TUnixSystem::ListSymbols(const char *module, const char *regexp)
{
// List symbols in a shared library.
UnixDynListSymbols(module, regexp);
}
//______________________________________________________________________________
void TUnixSystem::ListLibraries(const char *regexp)
{
// List all loaded shared libraries.
#ifdef R__HPUX
UnixDynListLibs(regexp);
#else
TSystem::ListLibraries(regexp);
#endif
}
//______________________________________________________________________________
const char *TUnixSystem::GetLinkedLibraries()
{
// Get list of shared libraries loaded at the start of the executable.
// Returns 0 in case list cannot be obtained or in case of error.
if (!gApplication) return 0;
static Bool_t once = kFALSE;
static TString linkedLibs;
R__LOCKGUARD2(gSystemMutex);
if (!linkedLibs.IsNull())
return linkedLibs;
if (once)
return 0;
char *exe = gSystem->Which(Getenv("PATH"), gApplication->Argv(0),
kExecutePermission);
if (!exe) {
once = kTRUE;
return 0;
}
#if defined(R__MACOSX)
FILE *p = OpenPipe(Form("otool -L %s", exe), "r");
TString otool;
while (otool.Gets(p)) {
TString delim(" \t");
TObjArray *tok = otool.Tokenize(delim);
TString dylib = ((TObjString*)tok->At(0))->String();
if (dylib.EndsWith(".dylib") && !dylib.Contains("/libSystem.B.dylib")) {
if (!linkedLibs.IsNull())
linkedLibs += " ";
linkedLibs += dylib;
}
delete tok;
}
ClosePipe(p);
#elif defined(R__LINUX) || defined(R__SOLARIS)
#if defined(R__WINGCC )
const char *cLDD="cygcheck";
const char *cSOEXT=".dll";
#else
const char *cLDD="ldd";
const char *cSOEXT=".so";
#endif
FILE *p = OpenPipe(Form("%s %s", cLDD, exe), "r");
TString ldd;
while (ldd.Gets(p)) {
TString delim(" \t");
TObjArray *tok = ldd.Tokenize(delim);
// expected format:
// libCore.so => /home/rdm/root/lib/libCore.so (0x40017000)
TObjString *solibName = (TObjString*)tok->At(2);
if (!solibName) {
// case where there is only one name of the list:
// /usr/platform/SUNW,UltraAX-i2/lib/libc_psr.so.1
solibName = (TObjString*)tok->At(0);
}
if (solibName) {
TString solib = solibName->String();
if (solib.EndsWith(cSOEXT)) {
if (!linkedLibs.IsNull())
linkedLibs += " ";
linkedLibs += solib;
}
}
delete tok;
}
ClosePipe(p);
#endif
delete [] exe;
once = kTRUE;
if (linkedLibs.IsNull())
return 0;
return linkedLibs;
}
//---- Time & Date -------------------------------------------------------------
//______________________________________________________________________________
TTime TUnixSystem::Now()
{
// Return current time.
return UnixNow();
}
//______________________________________________________________________________
Bool_t TUnixSystem::DispatchTimers(Bool_t mode)
{
// Handle and dispatch timers. If mode = kTRUE dispatch synchronous
// timers else a-synchronous timers.
if (!fTimers) return kFALSE;
fInsideNotify = kTRUE;
TOrdCollectionIter it((TOrdCollection*)fTimers);
TTimer *t;
Bool_t timedout = kFALSE;
while ((t = (TTimer *) it.Next())) {
Long_t now = UnixNow()+kItimerResolution;
if (mode && t->IsSync()) {
if (t->CheckTimer(now))
timedout = kTRUE;
} else if (!mode && t->IsAsync()) {
if (t->CheckTimer(now)) {
UnixSetitimer(NextTimeOut(kFALSE));
timedout = kTRUE;
}
}
}
fInsideNotify = kFALSE;
return timedout;
}
//______________________________________________________________________________
void TUnixSystem::AddTimer(TTimer *ti)
{
// Add timer to list of system timers.
TSystem::AddTimer(ti);
ResetTimer(ti);
}
//______________________________________________________________________________
TTimer *TUnixSystem::RemoveTimer(TTimer *ti)
{
// Remove timer from list of system timers.
if (!ti) return 0;
R__LOCKGUARD2(gSystemMutex);
TTimer *t = TSystem::RemoveTimer(ti);
if (ti->IsAsync())
UnixSetitimer(NextTimeOut(kFALSE));
return t;
}
//______________________________________________________________________________
void TUnixSystem::ResetTimer(TTimer *ti)
{
// Reset a-sync timer.
if (!fInsideNotify && ti && ti->IsAsync())
UnixSetitimer(NextTimeOut(kFALSE));
}
//---- RPC ---------------------------------------------------------------------
//______________________________________________________________________________
TInetAddress TUnixSystem::GetHostByName(const char *hostname)
{
// Get Internet Protocol (IP) address of host. Returns an TInetAddress
// object. To see if the hostname lookup was successfull call
// TInetAddress::IsValid().
struct hostent *host_ptr;
const char *host;
int type;
UInt_t addr; // good for 4 byte addresses
#ifdef HASNOT_INETATON
if ((addr = (UInt_t)inet_addr(hostname)) != INADDR_NONE) {
#else
struct in_addr ad;
if (inet_aton(hostname, &ad)) {
memcpy(&addr, &ad.s_addr, sizeof(ad.s_addr));
#endif
type = AF_INET;
if ((host_ptr = gethostbyaddr((const char *)&addr,
sizeof(addr), AF_INET))) {
host = host_ptr->h_name;
TInetAddress a(host, ntohl(addr), type);
UInt_t addr2;
Int_t i;
for (i = 1; host_ptr->h_addr_list[i]; i++) {
memcpy(&addr2, host_ptr->h_addr_list[i], host_ptr->h_length);
a.AddAddress(ntohl(addr2));
}
for (i = 0; host_ptr->h_aliases[i]; i++)
a.AddAlias(host_ptr->h_aliases[i]);
return a;
} else {
host = "UnNamedHost";
}
} else if ((host_ptr = gethostbyname(hostname))) {
// Check the address type for an internet host
if (host_ptr->h_addrtype != AF_INET) {
Error("GetHostByName", "%s is not an internet host\n", hostname);
return TInetAddress();
}
memcpy(&addr, host_ptr->h_addr, host_ptr->h_length);
host = host_ptr->h_name;
type = host_ptr->h_addrtype;
TInetAddress a(host, ntohl(addr), type);
UInt_t addr2;
Int_t i;
for (i = 1; host_ptr->h_addr_list[i]; i++) {
memcpy(&addr2, host_ptr->h_addr_list[i], host_ptr->h_length);
a.AddAddress(ntohl(addr2));
}
for (i = 0; host_ptr->h_aliases[i]; i++)
a.AddAlias(host_ptr->h_aliases[i]);
return a;
} else {
if (gDebug > 0) Error("GetHostByName", "unknown host %s", hostname);
return TInetAddress(hostname, 0, -1);
}
return TInetAddress(host, ntohl(addr), type);
}
//______________________________________________________________________________
TInetAddress TUnixSystem::GetSockName(int sock)
{
// Get Internet Protocol (IP) address of host and port #.
struct sockaddr_in addr;
#if defined(USE_SIZE_T)
size_t len = sizeof(addr);
#elif defined(USE_SOCKLEN_T)
socklen_t len = sizeof(addr);
#else
int len = sizeof(addr);
#endif
if (getsockname(sock, (struct sockaddr *)&addr, &len) == -1) {
SysError("GetSockName", "getsockname");
return TInetAddress();
}
struct hostent *host_ptr;
const char *hostname;
int family;
UInt_t iaddr;
if ((host_ptr = gethostbyaddr((const char *)&addr.sin_addr,
sizeof(addr.sin_addr), AF_INET))) {
memcpy(&iaddr, host_ptr->h_addr, host_ptr->h_length);
hostname = host_ptr->h_name;
family = host_ptr->h_addrtype;
} else {
memcpy(&iaddr, &addr.sin_addr, sizeof(addr.sin_addr));
hostname = "????";
family = AF_INET;
}
return TInetAddress(hostname, ntohl(iaddr), family, ntohs(addr.sin_port));
}
//______________________________________________________________________________
TInetAddress TUnixSystem::GetPeerName(int sock)
{
// Get Internet Protocol (IP) address of remote host and port #.
struct sockaddr_in addr;
#if defined(USE_SIZE_T)
size_t len = sizeof(addr);
#elif defined(USE_SOCKLEN_T)
socklen_t len = sizeof(addr);
#else
int len = sizeof(addr);
#endif
if (getpeername(sock, (struct sockaddr *)&addr, &len) == -1) {
SysError("GetPeerName", "getpeername");
return TInetAddress();
}
struct hostent *host_ptr;
const char *hostname;
int family;
UInt_t iaddr;
if ((host_ptr = gethostbyaddr((const char *)&addr.sin_addr,
sizeof(addr.sin_addr), AF_INET))) {
memcpy(&iaddr, host_ptr->h_addr, host_ptr->h_length);
hostname = host_ptr->h_name;
family = host_ptr->h_addrtype;
} else {
memcpy(&iaddr, &addr.sin_addr, sizeof(addr.sin_addr));
hostname = "????";
family = AF_INET;
}
return TInetAddress(hostname, ntohl(iaddr), family, ntohs(addr.sin_port));
}
//______________________________________________________________________________
int TUnixSystem::GetServiceByName(const char *servicename)
{
// Get port # of internet service.
struct servent *sp;
if ((sp = getservbyname(servicename, kProtocolName)) == 0) {
Error("GetServiceByName", "no service \"%s\" with protocol \"%s\"\n",
servicename, kProtocolName);
return -1;
}
return ntohs(sp->s_port);
}
//______________________________________________________________________________
char *TUnixSystem::GetServiceByPort(int port)
{
// Get name of internet service.
struct servent *sp;
if ((sp = getservbyport(htons(port), kProtocolName)) == 0) {
//::Error("GetServiceByPort", "no service \"%d\" with protocol \"%s\"",
// port, kProtocolName);
return Form("%d", port);
}
return sp->s_name;
}
//______________________________________________________________________________
int TUnixSystem::ConnectService(const char *servername, int port,
int tcpwindowsize)
{
// Connect to service servicename on server servername.
if (!strcmp(servername, "unix"))
return UnixUnixConnect(port);
return UnixTcpConnect(servername, port, tcpwindowsize);
}
//______________________________________________________________________________
int TUnixSystem::OpenConnection(const char *server, int port, int tcpwindowsize)
{
// Open a connection to a service on a server. Returns -1 in case
// connection cannot be opened.
// Use tcpwindowsize to specify the size of the receive buffer, it has
// to be specified here to make sure the window scale option is set (for
// tcpwindowsize > 65KB and for platforms supporting window scaling).
// Is called via the TSocket constructor.
return ConnectService(server, port, tcpwindowsize);
}
//______________________________________________________________________________
int TUnixSystem::AnnounceTcpService(int port, Bool_t reuse, int backlog,
int tcpwindowsize)
{
// Announce TCP/IP service.
// Open a socket, bind to it and start listening for TCP/IP connections
// on the port. If reuse is true reuse the address, backlog specifies
// how many sockets can be waiting to be accepted.
// Use tcpwindowsize to specify the size of the receive buffer, it has
// to be specified here to make sure the window scale option is set (for
// tcpwindowsize > 65KB and for platforms supporting window scaling).
// Returns socket fd or -1 if socket() failed, -2 if bind() failed
// or -3 if listen() failed.
return UnixTcpService(port, reuse, backlog, tcpwindowsize);
}
//______________________________________________________________________________
int TUnixSystem::AnnounceUnixService(int port, int backlog)
{
// Announce unix domain service.
return UnixUnixService(port, backlog);
}
//______________________________________________________________________________
int TUnixSystem::AcceptConnection(int sock)
{
// Accept a connection. In case of an error return -1. In case
// non-blocking I/O is enabled and no connections are available
// return -2.
int soc = -1;
while ((soc = ::accept(sock, 0, 0)) == -1 && GetErrno() == EINTR)
ResetErrno();
if (soc == -1) {
if (GetErrno() == EWOULDBLOCK)
return -2;
else {
SysError("AcceptConnection", "accept");
return -1;
}
}
return soc;
}
//______________________________________________________________________________
void TUnixSystem::CloseConnection(int sock, Bool_t force)
{
// Close socket.
if (sock < 0) return;
#if !defined(R__AIX) || defined(_AIX41) || defined(_AIX43)
if (force)
::shutdown(sock, 2); // will also close connection of parent
#endif
while (::close(sock) == -1 && GetErrno() == EINTR)
ResetErrno();
}
//______________________________________________________________________________
int TUnixSystem::RecvBuf(int sock, void *buf, int length)
{
// Receive a buffer headed by a length indicator. Lenght is the size of
// the buffer. Returns the number of bytes received in buf or -1 in
// case of error.
Int_t header;
if (UnixRecv(sock, &header, sizeof(header), 0) > 0) {
int count = ntohl(header);
if (count > length) {
Error("RecvBuf", "record header exceeds buffer size");
return -1;
} else if (count > 0) {
if (UnixRecv(sock, buf, count, 0) < 0) {
Error("RecvBuf", "cannot receive buffer");
return -1;
}
}
return count;
}
return -1;
}
//______________________________________________________________________________
int TUnixSystem::SendBuf(int sock, const void *buf, int length)
{
// Send a buffer headed by a length indicator. Returns length of sent buffer
// or -1 in case of error.
Int_t header = htonl(length);
if (UnixSend(sock, &header, sizeof(header), 0) < 0) {
Error("SendBuf", "cannot send header");
return -1;
}
if (length > 0) {
if (UnixSend(sock, buf, length, 0) < 0) {
Error("SendBuf", "cannot send buffer");
return -1;
}
}
return length;
}
//______________________________________________________________________________
int TUnixSystem::RecvRaw(int sock, void *buf, int length, int opt)
{
// Receive exactly length bytes into buffer. Use opt to receive out-of-band
// data or to have a peek at what is in the buffer (see TSocket). Buffer
// must be able to store at least length bytes. Returns the number of
// bytes received (can be 0 if other side of connection was closed) or -1
// in case of error, -2 in case of MSG_OOB and errno == EWOULDBLOCK, -3
// in case of MSG_OOB and errno == EINVAL and -4 in case of kNoBlock and
// errno == EWOULDBLOCK. Returns -5 if pipe broken or reset by peer
// (EPIPE || ECONNRESET).
int flag;
switch (opt) {
case kDefault:
flag = 0;
break;
case kOob:
flag = MSG_OOB;
break;
case kPeek:
flag = MSG_PEEK;
break;
case kDontBlock:
flag = -1;
break;
default:
flag = 0;
break;
}
int n;
if ((n = UnixRecv(sock, buf, length, flag)) <= 0) {
if (n == -1 && GetErrno() != EINTR)
Error("RecvRaw", "cannot receive buffer");
return n;
}
return n;
}
//______________________________________________________________________________
int TUnixSystem::SendRaw(int sock, const void *buf, int length, int opt)
{
// Send exactly length bytes from buffer. Use opt to send out-of-band
// data (see TSocket). Returns the number of bytes sent or -1 in case of
// error. Returns -4 in case of kNoBlock and errno == EWOULDBLOCK.
// Returns -5 if pipe broken or reset by peer (EPIPE || ECONNRESET).
int flag;
switch (opt) {
case kDefault:
flag = 0;
break;
case kOob:
flag = MSG_OOB;
break;
case kDontBlock:
flag = -1;
break;
case kPeek: // receive only option (see RecvRaw)
default:
flag = 0;
break;
}
int n;
if ((n = UnixSend(sock, buf, length, flag)) <= 0) {
if (n == -1 && GetErrno() != EINTR)
Error("SendRaw", "cannot send buffer");
return n;
}
return n;
}
//______________________________________________________________________________
int TUnixSystem::SetSockOpt(int sock, int opt, int val)
{
// Set socket option.
if (sock < 0) return -1;
switch (opt) {
case kSendBuffer:
if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char*)&val, sizeof(val)) == -1) {
SysError("SetSockOpt", "setsockopt(SO_SNDBUF)");
return -1;
}
break;
case kRecvBuffer:
if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char*)&val, sizeof(val)) == -1) {
SysError("SetSockOpt", "setsockopt(SO_RCVBUF)");
return -1;
}
break;
case kOobInline:
if (setsockopt(sock, SOL_SOCKET, SO_OOBINLINE, (char*)&val, sizeof(val)) == -1) {
SysError("SetSockOpt", "setsockopt(SO_OOBINLINE)");
return -1;
}
break;
case kKeepAlive:
if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char*)&val, sizeof(val)) == -1) {
SysError("SetSockOpt", "setsockopt(SO_KEEPALIVE)");
return -1;
}
break;
case kReuseAddr:
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&val, sizeof(val)) == -1) {
SysError("SetSockOpt", "setsockopt(SO_REUSEADDR)");
return -1;
}
break;
case kNoDelay:
if (setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char*)&val, sizeof(val)) == -1) {
SysError("SetSockOpt", "setsockopt(TCP_NODELAY)");
return -1;
}
break;
case kNoBlock:
if (ioctl(sock, FIONBIO, (char*)&val) == -1) {
SysError("SetSockOpt", "ioctl(FIONBIO)");
return -1;
}
break;
case kProcessGroup:
#ifndef R__WINGCC
if (ioctl(sock, SIOCSPGRP, (char*)&val) == -1) {
SysError("SetSockOpt", "ioctl(SIOCSPGRP)");
return -1;
}
#else
Error("SetSockOpt", "ioctl(SIOCGPGRP) not supported on cygwin/gcc");
return -1;
#endif
break;
case kAtMark: // read-only option (see GetSockOpt)
case kBytesToRead: // read-only option
default:
Error("SetSockOpt", "illegal option (%d)", opt);
return -1;
}
return 0;
}
//______________________________________________________________________________
int TUnixSystem::GetSockOpt(int sock, int opt, int *val)
{
// Get socket option.
if (sock < 0) return -1;
#if defined(USE_SOCKLEN_T) || defined(_AIX43)
socklen_t optlen = sizeof(*val);
#elif defined(USE_SIZE_T)
size_t optlen = sizeof(*val);
#else
int optlen = sizeof(*val);
#endif
switch (opt) {
case kSendBuffer:
if (getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (char*)val, &optlen) == -1) {
SysError("GetSockOpt", "getsockopt(SO_SNDBUF)");
return -1;
}
break;
case kRecvBuffer:
if (getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char*)val, &optlen) == -1) {
SysError("GetSockOpt", "getsockopt(SO_RCVBUF)");
return -1;
}
break;
case kOobInline:
if (getsockopt(sock, SOL_SOCKET, SO_OOBINLINE, (char*)val, &optlen) == -1) {
SysError("GetSockOpt", "getsockopt(SO_OOBINLINE)");
return -1;
}
break;
case kKeepAlive:
if (getsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char*)val, &optlen) == -1) {
SysError("GetSockOpt", "getsockopt(SO_KEEPALIVE)");
return -1;
}
break;
case kReuseAddr:
if (getsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)val, &optlen) == -1) {
SysError("GetSockOpt", "getsockopt(SO_REUSEADDR)");
return -1;
}
break;
case kNoDelay:
if (getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char*)val, &optlen) == -1) {
SysError("GetSockOpt", "getsockopt(TCP_NODELAY)");
return -1;
}
break;
case kNoBlock:
int flg;
if ((flg = fcntl(sock, F_GETFL, 0)) == -1) {
SysError("GetSockOpt", "fcntl(F_GETFL)");
return -1;
}
*val = flg & O_NDELAY;
break;
case kProcessGroup:
#if !defined(R__LYNXOS) && !defined(R__WINGCC)
if (ioctl(sock, SIOCGPGRP, (char*)val) == -1) {
SysError("GetSockOpt", "ioctl(SIOCGPGRP)");
return -1;
}
#else
Error("GetSockOpt", "ioctl(SIOCGPGRP) not supported on LynxOS and cygwin/gcc");
return -1;
#endif
break;
case kAtMark:
#if !defined(R__LYNXOS)
if (ioctl(sock, SIOCATMARK, (char*)val) == -1) {
SysError("GetSockOpt", "ioctl(SIOCATMARK)");
return -1;
}
#else
Error("GetSockOpt", "ioctl(SIOCATMARK) not supported on LynxOS");
return -1;
#endif
break;
case kBytesToRead:
#if !defined(R__LYNXOS)
if (ioctl(sock, FIONREAD, (char*)val) == -1) {
SysError("GetSockOpt", "ioctl(FIONREAD)");
return -1;
}
#else
Error("GetSockOpt", "ioctl(FIONREAD) not supported on LynxOS");
return -1;
#endif
break;
default:
Error("GetSockOpt", "illegal option (%d)", opt);
*val = 0;
return -1;
}
return 0;
}
//////////////////////////////////////////////////////////////////////////
// //
// Static Protected Unix Interface functions. //
// //
//////////////////////////////////////////////////////////////////////////
//---- signals -----------------------------------------------------------------
static struct Signalmap_t {
int fCode;
SigHandler_t fHandler;
struct sigaction *fOldHandler;
const char *fSigName;
} gSignalMap[kMAXSIGNALS] = { // the order of the signals should be identical
{ SIGBUS, 0, 0, "bus error" }, // to the one in SysEvtHandler.h
{ SIGSEGV, 0, 0, "segmentation violation" },
{ SIGSYS, 0, 0, "bad argument to system call" },
{ SIGPIPE, 0, 0, "write on a pipe with no one to read it" },
{ SIGILL, 0, 0, "illegal instruction" },
{ SIGQUIT, 0, 0, "quit" },
{ SIGINT, 0, 0, "interrupt" },
{ SIGWINCH, 0, 0, "window size change" },
{ SIGALRM, 0, 0, "alarm clock" },
{ SIGCHLD, 0, 0, "death of a child" },
{ SIGURG, 0, 0, "urgent data arrived on an I/O channel" },
{ SIGFPE, 0, 0, "floating point exception" },
{ SIGTERM, 0, 0, "termination signal" },
{ SIGUSR1, 0, 0, "user-defined signal 1" },
{ SIGUSR2, 0, 0, "user-defined signal 2" }
};
//______________________________________________________________________________
static void sighandler(int sig)
{
// Call the signal handler associated with the signal.
for (int i= 0; i < kMAXSIGNALS; i++) {
if (gSignalMap[i].fCode == sig) {
(*gSignalMap[i].fHandler)((ESignals)i);
return;
}
}
}
#if defined(R__KCC)
extern "C" {
typedef void (*sighandlerFunc_t)(int);
}
#endif
//______________________________________________________________________________
void TUnixSystem::UnixSignal(ESignals sig, SigHandler_t handler)
{
// Set a signal handler for a signal.
if (gSignalMap[sig].fHandler != handler) {
struct sigaction sigact;
gSignalMap[sig].fHandler = handler;
gSignalMap[sig].fOldHandler = new struct sigaction();
#if defined(R__SUN)
sigact.sa_handler = (void (*)())sighandler;
#elif defined(R__SOLARIS)
sigact.sa_handler = sighandler;
#elif defined(R__KCC)
sigact.sa_handler = (sighandlerFunc_t)sighandler;
#elif (defined(R__SGI) && !defined(R__KCC)) || defined(R__LYNXOS)
# if defined(R__SGI64) || (__GNUG__>=3)
sigact.sa_handler = sighandler;
# else
sigact.sa_handler = (void (*)(...))sighandler;
# endif
#else
sigact.sa_handler = sighandler;
#endif
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
#if defined(SA_RESTART)
sigact.sa_flags |= SA_RESTART;
#endif
if (sigaction(gSignalMap[sig].fCode, &sigact,
gSignalMap[sig].fOldHandler) < 0)
::SysError("TUnixSystem::UnixSignal", "sigaction");
}
}
//______________________________________________________________________________
void TUnixSystem::UnixIgnoreSignal(ESignals sig, Bool_t ignore)
{
// If ignore is true ignore the specified signal, else restore previous
// behaviour.
static Bool_t ignoreSig[kMAXSIGNALS] = { kFALSE };
static struct sigaction oldsigact[kMAXSIGNALS];
if (ignore != ignoreSig[sig]) {
ignoreSig[sig] = ignore;
if (ignore) {
struct sigaction sigact;
#if defined(R__SUN)
sigact.sa_handler = (void (*)())SIG_IGN;
#elif defined(R__SOLARIS)
sigact.sa_handler = (void (*)(int))SIG_IGN;
#else
sigact.sa_handler = SIG_IGN;
#endif
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
if (sigaction(gSignalMap[sig].fCode, &sigact, &oldsigact[sig]) < 0)
::SysError("TUnixSystem::UnixIgnoreSignal", "sigaction");
} else {
if (sigaction(gSignalMap[sig].fCode, &oldsigact[sig], 0) < 0)
::SysError("TUnixSystem::UnixIgnoreSignal", "sigaction");
}
}
}
//______________________________________________________________________________
void TUnixSystem::UnixSigAlarmInterruptsSyscalls(Bool_t set)
{
// When the argument is true the SIGALRM signal handler is set so that
// interrupted syscalls will not be restarted by the kernel. This is
// typically used in case one wants to put a timeout on an I/O operation.
// By default interrupted syscalls will always be restarted (for all
// signals). This can be controlled for each a-synchronous TTimer via
// the method TTimer::SetInterruptSyscalls().
if (gSignalMap[kSigAlarm].fHandler) {
struct sigaction sigact;
#if defined(R__SUN)
sigact.sa_handler = (void (*)())sighandler;
#elif defined(R__SOLARIS)
sigact.sa_handler = sighandler;
#elif defined(R__KCC)
sigact.sa_handler = (sighandlerFunc_t)sighandler;
#elif (defined(R__SGI) && !defined(R__KCC)) || defined(R__LYNXOS)
# if defined(R__SGI64) || (__GNUG__>=3)
sigact.sa_handler = sighandler;
# else
sigact.sa_handler = (void (*)(...))sighandler;
# endif
#else
sigact.sa_handler = sighandler;
#endif
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
if (set) {
#if defined(SA_INTERRUPT) // SunOS
sigact.sa_flags |= SA_INTERRUPT;
#endif
} else {
#if defined(SA_RESTART)
sigact.sa_flags |= SA_RESTART;
#endif
}
if (sigaction(gSignalMap[kSigAlarm].fCode, &sigact, 0) < 0)
::SysError("TUnixSystem::UnixSigAlarmInterruptsSyscalls", "sigaction");
}
}
//______________________________________________________________________________
const char *TUnixSystem::UnixSigname(ESignals sig)
{
// Return the signal name associated with a signal.
return gSignalMap[sig].fSigName;
}
//______________________________________________________________________________
void TUnixSystem::UnixResetSignal(ESignals sig)
{
// Restore old signal handler for specified signal.
if (gSignalMap[sig].fOldHandler) {
// restore old signal handler
sigaction(gSignalMap[sig].fCode, gSignalMap[sig].fOldHandler, 0);
delete gSignalMap[sig].fOldHandler;
gSignalMap[sig].fOldHandler = 0;
gSignalMap[sig].fHandler = 0;
}
}
//______________________________________________________________________________
void TUnixSystem::UnixResetSignals()
{
// Restore old signal handlers.
for (int sig = 0; sig < kMAXSIGNALS; sig++) {
if (gSignalMap[sig].fOldHandler) {
// restore old signal handler
sigaction(gSignalMap[sig].fCode, gSignalMap[sig].fOldHandler, 0);
delete gSignalMap[sig].fOldHandler;
gSignalMap[sig].fOldHandler = 0;
gSignalMap[sig].fHandler = 0;
}
}
}
//---- time --------------------------------------------------------------------
//______________________________________________________________________________
Long_t TUnixSystem::UnixNow()
{
// Get current time in milliseconds since 0:00 Jan 1 1995.
static time_t jan95 = 0;
if (!jan95) {
struct tm tp;
tp.tm_year = 95;
tp.tm_mon = 0;
tp.tm_mday = 1;
tp.tm_hour = 0;
tp.tm_min = 0;
tp.tm_sec = 0;
tp.tm_isdst = -1;
jan95 = mktime(&tp);
if ((int)jan95 == -1) {
::SysError("TUnixSystem::UnixNow", "error converting 950001 0:00 to time_t");
return 0;
}
}
struct timeval t;
gettimeofday(&t, 0);
return (t.tv_sec-(Long_t)jan95)*1000 + t.tv_usec/1000;
}
//______________________________________________________________________________
int TUnixSystem::UnixSetitimer(Long_t ms)
{
// Set interval timer to time-out in ms milliseconds.
struct itimerval itv;
itv.it_value.tv_sec = 0;
itv.it_value.tv_usec = 0;
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
if (ms > 0) {
itv.it_value.tv_sec = time_t(ms / 1000);
itv.it_value.tv_usec = time_t((ms % 1000) * 1000);
}
int st = setitimer(ITIMER_REAL, &itv, 0);
if (st == -1)
::SysError("TUnixSystem::UnixSetitimer", "setitimer");
return st;
}
//---- file descriptors --------------------------------------------------------
//______________________________________________________________________________
int TUnixSystem::UnixSelect(UInt_t nfds, TFdSet *readready, TFdSet *writeready,
Long_t timeout)
{
// Wait for events on the file descriptors specified in the readready and
// writeready masks or for timeout (in milliseconds) to occur.
int retcode;
#if (defined(R__HPUX) && defined(R__B64))
fd_set frd;
fd_set fwr;
for (int i = 0; i < nfds; i++) {
if (readready) FD_SET(readready->IsSet(i), &frd);
if (writeready) FD_SET(writeready->IsSet(i), &fwr);
}
fd_set *rd = (readready) ? &frd : 0;
fd_set *wr = (writeready) ? &fwr : 0;
#else
fd_set *rd = (readready) ? (fd_set*)readready->GetBits() : 0;
fd_set *wr = (writeready) ? (fd_set*)writeready->GetBits() : 0;
#endif
if (timeout >= 0) {
struct timeval tv;
tv.tv_sec = Int_t(timeout / 1000);
tv.tv_usec = (timeout % 1000) * 1000;
retcode = select(nfds, rd, wr, 0, &tv);
} else {
retcode = select(nfds, rd, wr, 0, 0);
}
if (retcode == -1) {
if (GetErrno() == EINTR) {
ResetErrno(); // errno is not self reseting
return -2;
}
if (GetErrno() == EBADF)
return -3;
return -1;
}
return retcode;
}
//---- directories -------------------------------------------------------------
//______________________________________________________________________________
const char *TUnixSystem::UnixHomedirectory(const char *name)
{
// Returns the user's home directory.
static char path[kMAXPATHLEN], mydir[kMAXPATHLEN];
struct passwd *pw;
if (name) {
pw = getpwnam(name);
if (pw) {
strncpy(path, pw->pw_dir, kMAXPATHLEN);
return path;
}
} else {
if (mydir[0])
return mydir;
pw = getpwuid(getuid());
if (pw) {
strncpy(mydir, pw->pw_dir, kMAXPATHLEN);
return mydir;
}
}
return 0;
}
//______________________________________________________________________________
int TUnixSystem::UnixMakedir(const char *dir)
{
// Make a Unix file system directory. Returns 0 in case of success and
// -1 if the directory could not be created (either already exists or
// illegal path name).
return ::mkdir(dir, 0755);
}
//______________________________________________________________________________
void *TUnixSystem::UnixOpendir(const char *dir)
{
// Open a directory.
struct stat finfo;
if (stat(dir, &finfo) < 0)
return 0;
if (!S_ISDIR(finfo.st_mode))
return 0;
return (void*) opendir(dir);
}
#if defined(_POSIX_SOURCE)
// Posix does not require that the d_ino field be present, and some
// systems do not provide it.
# define REAL_DIR_ENTRY(dp) 1
#else
# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
#endif
//______________________________________________________________________________
const char *TUnixSystem::UnixGetdirentry(void *dirp1)
{
// Returns the next directory entry.
DIR *dirp = (DIR*)dirp1;
#ifdef HAS_DIRENT
struct dirent *dp;
#else
struct direct *dp;
#endif
if (dirp) {
for (;;) {
dp = readdir(dirp);
if (dp == 0)
return 0;
if (REAL_DIR_ENTRY(dp))
return dp->d_name;
}
}
return 0;
}
//---- files -------------------------------------------------------------------
//______________________________________________________________________________
int TUnixSystem::UnixFilestat(const char *path, FileStat_t &buf)
{
// Get info about a file. Info is returned in the form of a FileStat_t
// structure (see TSystem.h).
// The function returns 0 in case of success and 1 if the file could
// not be stat'ed.
#if defined(R__SEEK64)
struct stat64 sbuf;
if (path && lstat64(path, &sbuf) == 0) {
#else
struct stat sbuf;
if (path && lstat(path, &sbuf) == 0) {
#endif
buf.fIsLink = S_ISLNK(sbuf.st_mode);
if (buf.fIsLink) {
#if defined(R__SEEK64)
if (stat64(path, &sbuf) == -1) {
#else
if (stat(path, &sbuf) == -1) {
#endif
return 1;
}
}
buf.fDev = sbuf.st_dev;
buf.fIno = sbuf.st_ino;
buf.fMode = sbuf.st_mode;
buf.fUid = sbuf.st_uid;
buf.fGid = sbuf.st_gid;
buf.fSize = sbuf.st_size;
buf.fMtime = sbuf.st_mtime;
return 0;
}
return 1;
}
//______________________________________________________________________________
int TUnixSystem::UnixFSstat(const char *path, Long_t *id, Long_t *bsize,
Long_t *blocks, Long_t *bfree)
{
// Get info about a file system: id, bsize, bfree, blocks.
// Id is file system type (machine dependend, see statfs())
// Bsize is block size of file system
// Blocks is total number of blocks in file system
// Bfree is number of free blocks in file system
// The function returns 0 in case of success and 1 if the file system could
// not be stat'ed.
struct statfs statfsbuf;
#if defined(R__SGI) || (defined(R__SOLARIS) && !defined(R__LINUX))
if (statfs(path, &statfsbuf, sizeof(struct statfs), 0) == 0) {
*id = statfsbuf.f_fstyp;
*bsize = statfsbuf.f_bsize;
*blocks = statfsbuf.f_blocks;
*bfree = statfsbuf.f_bfree;
#else
if (statfs((char*)path, &statfsbuf) == 0) {
#ifdef R__OBSD
// Convert BSD filesystem names to Linux filesystem type numbers
// where possible. Linux statfs uses a value of -1 to indicate
// an unsupported field.
if (!strcmp(statfsbuf.f_fstypename, MOUNT_FFS) ||
!strcmp(statfsbuf.f_fstypename, MOUNT_MFS))
*id = 0x11954;
else if (!strcmp(statfsbuf.f_fstypename, MOUNT_NFS))
*id = 0x6969;
else if (!strcmp(statfsbuf.f_fstypename, MOUNT_MSDOS))
*id = 0x4d44;
else if (!strcmp(statfsbuf.f_fstypename, MOUNT_PROCFS))
*id = 0x9fa0;
else if (!strcmp(statfsbuf.f_fstypename, MOUNT_EXT2FS))
*id = 0xef53;
else if (!strcmp(statfsbuf.f_fstypename, MOUNT_CD9660))
*id = 0x9660;
else if (!strcmp(statfsbuf.f_fstypename, MOUNT_NCPFS))
*id = 0x6969;
else
*id = -1;
#else
*id = statfsbuf.f_type;
#endif
*bsize = statfsbuf.f_bsize;
*blocks = statfsbuf.f_blocks;
*bfree = statfsbuf.f_bavail;
#endif
return 0;
}
return 1;
}
//______________________________________________________________________________
int TUnixSystem::UnixWaitchild()
{
// Wait till child is finished.
int status;
return (int) waitpid(0, &status, WNOHANG);
}
//---- RPC -------------------------------------------------------------------
//______________________________________________________________________________
int TUnixSystem::UnixTcpConnect(const char *hostname, int port,
int tcpwindowsize)
{
// Open a TCP/IP connection to server and connect to a service (i.e. port).
// Use tcpwindowsize to specify the size of the receive buffer, it has
// to be specified here to make sure the window scale option is set (for
// tcpwindowsize > 65KB and for platforms supporting window scaling).
// Is called via the TSocket constructor.
short sport;
struct servent *sp;
if ((sp = getservbyport(htons(port), kProtocolName)))
sport = sp->s_port;
else
sport = htons(port);
TInetAddress addr = gSystem->GetHostByName(hostname);
if (!addr.IsValid()) return -1;
UInt_t adr = htonl(addr.GetAddress());
struct sockaddr_in server;
memset(&server, 0, sizeof(server));
memcpy(&server.sin_addr, &adr, sizeof(adr));
server.sin_family = addr.GetFamily();
server.sin_port = sport;
// Create socket
int sock;
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
::SysError("TUnixSystem::UnixTcpConnect", "socket (%s:%d)",
hostname, port);
return -1;
}
if (tcpwindowsize > 0) {
gSystem->SetSockOpt(sock, kRecvBuffer, tcpwindowsize);
gSystem->SetSockOpt(sock, kSendBuffer, tcpwindowsize);
}
if (connect(sock, (struct sockaddr*) &server, sizeof(server)) < 0) {
::SysError("TUnixSystem::UnixTcpConnect", "connect (%s:%d)",
hostname, port);
close(sock);
return -1;
}
return sock;
}
//______________________________________________________________________________
int TUnixSystem::UnixUnixConnect(int port)
{
// Connect to a Unix domain socket.
int sock;
char buf[100];
struct sockaddr_un unserver;
sprintf(buf, "%s/%d", kServerPath, port);
unserver.sun_family = AF_UNIX;
strcpy(unserver.sun_path, buf);
// Open socket
if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
::SysError("TUnixSystem::UnixUnixConnect", "socket");
return -1;
}
if (connect(sock, (struct sockaddr*) &unserver, strlen(unserver.sun_path)+2) < 0) {
::SysError("TUnixSystem::UnixUnixConnect", "connect");
close(sock);
return -1;
}
return sock;
}
//______________________________________________________________________________
int TUnixSystem::UnixTcpService(int port, Bool_t reuse, int backlog,
int tcpwindowsize)
{
// Open a socket, bind to it and start listening for TCP/IP connections
// on the port. If reuse is true reuse the address, backlog specifies
// how many sockets can be waiting to be accepted. If port is 0 a port
// scan will be done to find a free port. This option is mutual exlusive
// with the reuse option.
// Use tcpwindowsize to specify the size of the receive buffer, it has
// to be specified here to make sure the window scale option is set (for
// tcpwindowsize > 65KB and for platforms supporting window scaling).
// Returns socket fd or -1 if socket() failed, -2 if bind() failed
// or -3 if listen() failed.
const short kSOCKET_MINPORT = 5000, kSOCKET_MAXPORT = 15000;
short sport, tryport = kSOCKET_MINPORT;
struct servent *sp;
if (port == 0 && reuse) {
::Error("TUnixSystem::UnixTcpService", "cannot do a port scan while reuse is true");
return -1;
}
if ((sp = getservbyport(htons(port), kProtocolName)))
sport = sp->s_port;
else
sport = htons(port);
// Create tcp socket
int sock;
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
::SysError("TUnixSystem::UnixTcpService", "socket");
return -1;
}
if (reuse)
gSystem->SetSockOpt(sock, kReuseAddr, 1);
if (tcpwindowsize > 0) {
gSystem->SetSockOpt(sock, kRecvBuffer, tcpwindowsize);
gSystem->SetSockOpt(sock, kSendBuffer, tcpwindowsize);
}
struct sockaddr_in inserver;
memset(&inserver, 0, sizeof(inserver));
inserver.sin_family = AF_INET;
inserver.sin_addr.s_addr = htonl(INADDR_ANY);
inserver.sin_port = sport;
// Bind socket
if (port > 0) {
if (bind(sock, (struct sockaddr*) &inserver, sizeof(inserver))) {
::SysError("TUnixSystem::UnixTcpService", "bind");
return -2;
}
} else {
int bret;
do {
inserver.sin_port = htons(tryport++);
bret = bind(sock, (struct sockaddr*) &inserver, sizeof(inserver));
} while (bret < 0 && GetErrno() == EADDRINUSE && tryport < kSOCKET_MAXPORT);
if (bret < 0) {
::SysError("TUnixSystem::UnixTcpService", "bind (port scan)");
return -2;
}
}
// Start accepting connections
if (listen(sock, backlog)) {
::SysError("TUnixSystem::UnixTcpService", "listen");
return -3;
}
return sock;
}
//______________________________________________________________________________
int TUnixSystem::UnixUnixService(int port, int backlog)
{
// Open a socket, bind to it and start listening for Unix domain connections
// to it. Returns socket fd or -1.
struct sockaddr_un unserver;
int sock, oldumask;
memset(&unserver, 0, sizeof(unserver));
unserver.sun_family = AF_UNIX;
// Assure that socket directory exists
oldumask = umask(0);
::mkdir(kServerPath, 0777);
umask(oldumask);
sprintf(unserver.sun_path, "%s/%d", kServerPath, port);
// Remove old socket
unlink(unserver.sun_path);
// Create socket
if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
::SysError("TUnixSystem::UnixUnixService", "socket");
return -1;
}
if (bind(sock, (struct sockaddr*) &unserver, strlen(unserver.sun_path)+2)) {
::SysError("TUnixSystem::UnixUnixService", "bind");
return -1;
}
// Start accepting connections
if (listen(sock, backlog)) {
::SysError("TUnixSystem::UnixUnixService", "listen");
return -1;
}
return sock;
}
//______________________________________________________________________________
int TUnixSystem::UnixRecv(int sock, void *buffer, int length, int flag)
{
// Receive exactly length bytes into buffer. Returns number of bytes
// received. Returns -1 in case of error, -2 in case of MSG_OOB
// and errno == EWOULDBLOCK, -3 in case of MSG_OOB and errno == EINVAL
// and -4 in case of kNoBlock and errno == EWOULDBLOCK.
// Returns -5 if pipe broken or reset by peer (EPIPE || ECONNRESET).
ResetErrno();
if (sock < 0) return -1;
int once = 0;
if (flag == -1) {
flag = 0;
once = 1;
}
int n, nrecv = 0;
char *buf = (char *)buffer;
for (n = 0; n < length; n += nrecv) {
if ((nrecv = recv(sock, buf+n, length-n, flag)) <= 0) {
if (nrecv == 0)
break; // EOF
if (flag == MSG_OOB) {
if (GetErrno() == EWOULDBLOCK)
return -2;
else if (GetErrno() == EINVAL)
return -3;
}
if (GetErrno() == EWOULDBLOCK)
return -4;
else {
if (GetErrno() != EINTR)
::SysError("TUnixSystem::UnixRecv", "recv");
if (GetErrno() == EPIPE || GetErrno() == ECONNRESET)
return -5;
else
return -1;
}
}
if (once)
return nrecv;
}
return n;
}
//______________________________________________________________________________
int TUnixSystem::UnixSend(int sock, const void *buffer, int length, int flag)
{
// Send exactly length bytes from buffer. Returns -1 in case of error,
// otherwise number of sent bytes. Returns -4 in case of kNoBlock and
// errno == EWOULDBLOCK. Returns -5 if pipe broken or reset by peer
// (EPIPE || ECONNRESET).
if (sock < 0) return -1;
int once = 0;
if (flag == -1) {
flag = 0;
once = 1;
}
int n, nsent = 0;
const char *buf = (const char *)buffer;
for (n = 0; n < length; n += nsent) {
if ((nsent = send(sock, buf+n, length-n, flag)) <= 0) {
if (nsent == 0)
break;
if (GetErrno() == EWOULDBLOCK)
return -4;
else {
if (GetErrno() != EINTR)
::SysError("TUnixSystem::UnixSend", "send");
if (GetErrno() == EPIPE || GetErrno() == ECONNRESET)
return -5;
else
return -1;
}
}
if (once)
return nsent;
}
return n;
}
//---- Dynamic Loading ---------------------------------------------------------
//______________________________________________________________________________
static const char *DynamicPath(const char *newpath = 0, Bool_t reset = kFALSE)
{
// Get shared library search path. Static utility function.
static TString dynpath;
static Bool_t initialized = kFALSE;
if (newpath) {
dynpath = newpath;
} else if (reset || !initialized) {
initialized = kTRUE;
TString rdynpath = gEnv->GetValue("Root.DynamicPath", (char*)0);
if (rdynpath.IsNull()) {
#ifdef ROOTLIBDIR
rdynpath = ".:"; rdynpath += ROOTLIBDIR;
#else
rdynpath = ".:"; rdynpath += gRootDir; rdynpath += "/lib";
#endif
}
TString ldpath;
#if defined (R__AIX)
ldpath = gSystem->Getenv("LIBPATH");
#elif defined(R__HPUX)
ldpath = gSystem->Getenv("SHLIB_PATH");
#elif defined(R__MACOSX)
ldpath = gSystem->Getenv("DYLD_LIBRARY_PATH");
if (!ldpath.IsNull())
ldpath += ":";
ldpath += gSystem->Getenv("LD_LIBRARY_PATH");
#else
ldpath = gSystem->Getenv("LD_LIBRARY_PATH");
#endif
if (ldpath.IsNull())
dynpath = rdynpath;
else {
dynpath = rdynpath; dynpath += ":"; dynpath += ldpath;
}
#ifdef ROOTLIBDIR
if (!dynpath.Contains(ROOTLIBDIR)) {
dynpath += ":"; dynpath += ROOTLIBDIR;
}
#else
if (!dynpath.Contains(Form("%s/lib", gRootDir))) {
dynpath += ":"; dynpath += gRootDir; dynpath += "/lib";
}
#endif
}
return dynpath;
}
//______________________________________________________________________________
const char *TUnixSystem::GetDynamicPath()
{
// Return the dynamic path (used to find shared libraries).
return DynamicPath(0, kFALSE);
}
//______________________________________________________________________________
void TUnixSystem::SetDynamicPath(const char *path)
{
// Set the dynamic path to a new value.
// If the value of 'path' is zero, the dynamic path is reset to its
// default value.
if (!path)
DynamicPath(0, kTRUE);
else
DynamicPath(path);
}
//______________________________________________________________________________
char *TUnixSystem::DynamicPathName(const char *lib, Bool_t quiet)
{
// Returns the path of a shared library (searches for library in the
// shared library search path). If no file name extension is provided
// it first tries .so, .sl, .dl and then .a (for AIX). The returned string
// must be deleted.
char *name;
int ext = 0, len = strlen(lib);
if (len > 3 && (!strcmp(lib+len-3, ".sl") ||
!strcmp(lib+len-3, ".dl") ||
!strcmp(lib+len-4, ".dll")||
!strcmp(lib+len-4, ".DLL")||
!strcmp(lib+len-3, ".so") ||
!strcmp(lib+len-2, ".a"))) {
name = gSystem->Which(GetDynamicPath(), lib, kReadPermission);
ext = 1;
} else {
name = Form("%s.dll", lib);
name = gSystem->Which(GetDynamicPath(), name, kReadPermission);
if (!name) {
name = Form("%s.so", lib);
name = gSystem->Which(GetDynamicPath(), name, kReadPermission);
if (!name) {
name = Form("%s.sl", lib);
name = gSystem->Which(GetDynamicPath(), name, kReadPermission);
if (!name) {
name = Form("%s.dl", lib);
name = gSystem->Which(GetDynamicPath(), name, kReadPermission);
if (!name) {
name = Form("%s.a", lib);
name = gSystem->Which(GetDynamicPath(), name, kReadPermission);
}
}
}
}
}
if (!name && !quiet) {
if (ext)
Error("DynamicPathName",
"%s does not exist in %s", lib, GetDynamicPath());
else
Error("DynamicPathName",
"%s[.so | .sl | .dl | .a | .dll] does not exist in %s", lib, GetDynamicPath());
}
return name;
}
//______________________________________________________________________________
void *TUnixSystem::FindDynLib(const char *lib)
{
// Returns the handle to a loaded shared library. Returns 0 when library
// not loaded.
#ifdef R__HPUX
const char *path;
if ((path = gSystem->DynamicPathName(lib))) {
// find handle of shared library using its name
struct shl_descriptor *desc;
int index = 0;
while (shl_get(index++, &desc) == 0)
if (!strcmp(path, desc->filename))
return desc->handle;
}
#endif
if (lib) { } // avoid warning, use lib
return 0;
}
//______________________________________________________________________________
int TUnixSystem::UnixDynLoad(const char *lib)
{
// Load a shared library. Returns 0 on successful loading, 1 in
// case lib was already loaded and -1 in case lib does not exist
// or in case of error.
const char *path;
if ((path = gSystem->DynamicPathName(lib))) {
#if defined(R__HPUX)
#if !defined(__STDCPP__)
shl_t handle = cxxshl_load(path, BIND_IMMEDIATE | BIND_NONFATAL, 0L);
#else
shl_t handle = shl_load(path, BIND_IMMEDIATE | BIND_NONFATAL, 0L);
#endif
if (handle != 0) return 0;
#else
if (path) { } // use path remove warning
::Error("TUnixSystem::UnixDynLoad", "not yet implemented for this platform");
return -1;
#endif
}
return -1;
}
//______________________________________________________________________________
Func_t TUnixSystem::UnixDynFindSymbol(const char *lib, const char *entry)
{
// Finds and returns a function pointer to a symbol in the shared library.
// Returns 0 when symbol not found.
#if defined(R__HPUX) && !defined(R__GNU)
shl_t handle;
if (handle = (shl_t)FindDynLib(lib)) {
Func_t addr = 0;
if (shl_findsym(&handle, entry, TYPE_PROCEDURE, addr) == -1)
::SysError("TUnixSystem::UnixDynFindSymbol", "shl_findsym");
return addr;
}
return 0;
#else
if (lib || entry) { }
// Always assume symbol not found
return 0;
#endif
}
//______________________________________________________________________________
void TUnixSystem::UnixDynListSymbols(const char *lib, const char *regexp)
{
// List symbols in a shared library. One can use wildcards to list only
// the interesting symbols.
#if defined(R__HPUX) && !defined(R__GNU)
shl_t handle;
if (handle = (shl_t)FindDynLib(lib)) {
struct shl_symbol *symbols;
int nsym = shl_getsymbols(handle, TYPE_PROCEDURE,
EXPORT_SYMBOLS|NO_VALUES, (void *(*)())malloc,
&symbols);
if (nsym != -1) {
if (nsym > 0) {
int cnt = 0;
TRegexp *re = 0;
if (regexp && strlen(regexp)) re = new TRegexp(regexp, kTRUE);
Printf("");
Printf("Functions exported by library %s", gSystem->DynamicPathName(lib));
Printf("=========================================================");
for (int i = 0; i < nsym; i++)
if (symbols[i].type == TYPE_PROCEDURE) {
cnt++;
char *dsym = cplus_demangle(symbols[i].name,
DMGL_PARAMS|DMGL_ANSI|DMGL_ARM);
if (re) {
TString s = dsym;
if (s.Index(*re) != kNPOS) Printf("%s", dsym);
} else
Printf("%s", dsym);
free(dsym);
}
Printf("---------------------------------------------------------");
Printf("%d exported functions", cnt);
Printf("=========================================================");
delete re;
}
free(symbols);
}
}
#endif
if (lib || regexp) { }
}
//______________________________________________________________________________
void TUnixSystem::UnixDynListLibs(const char *lib)
{
// List all loaded shared libraries.
#if defined(R__HPUX) && !defined(R__GNU)
TRegexp *re = 0;
if (lib && strlen(lib)) re = new TRegexp(lib, kTRUE);
struct shl_descriptor *desc;
int index = 0;
Printf("");
Printf("Loaded shared libraries");
Printf("=======================");
while (shl_get(index++, &desc) == 0)
if (re) {
TString s = desc->filename;
if (s.Index(*re) != kNPOS) Printf("%s", desc->filename);
} else
Printf("%s", desc->filename);
Printf("-----------------------");
Printf("%d libraries loaded", index-1);
Printf("=======================");
delete re;
#else
if (lib) { }
#endif
}
//______________________________________________________________________________
void TUnixSystem::UnixDynUnload(const char *lib)
{
// Unload a shared library.
#if defined(R__HPUX)
shl_t handle;
if (handle = (shl_t)FindDynLib(lib))
#if !defined(__STDCPP__)
if (cxxshl_unload(handle) == -1)
#else
if (shl_unload(handle) == -1)
#endif
::SysError("TUnixSystem::UnixDynUnload", "could not unload library %s", lib);
#else
if (lib) { }
// should call CINT unload file here, but does not work for sl's yet.
::Error("TUnixSystem::UnixDynUnload", "not yet implemented for this platform");
#endif
}
//______________________________________________________________________________
int TUnixSystem::ReadUtmpFile()
{
// Read utmp file. Returns number of entries in utmp file.
FILE *utmp;
struct stat file_stats;
size_t n_read, size;
R__LOCKGUARD2(gSystemMutex);
gUtmpContents = 0;
utmp = fopen(UTMP_FILE, "r");
if (!utmp)
return 0;
fstat(fileno(utmp), &file_stats);
size = file_stats.st_size;
if (size <= 0) {
fclose(utmp);
return 0;
}
gUtmpContents = (STRUCT_UTMP *) malloc(size);
if (!gUtmpContents) return 0;
n_read = fread(gUtmpContents, 1, size, utmp);
if (ferror(utmp) || fclose(utmp) == EOF || n_read < size) {
free(gUtmpContents);
gUtmpContents = 0;
return 0;
}
return size / sizeof(STRUCT_UTMP);
}
//______________________________________________________________________________
void *TUnixSystem::SearchUtmpEntry(int n, const char *tty)
{
// Look for utmp entry which is connected to terminal tty.
STRUCT_UTMP *ue = gUtmpContents;
while (n--) {
if (ue->ut_name[0] && !strncmp(tty, ue->ut_line, sizeof(ue->ut_line)))
return ue;
ue++;
}
return 0;
}
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