XrdPosix.cc File Reference

#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <limits.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/uio.h>
#include "XrdSys/XrdSysHeaders.hh"
#include "XrdPosix/XrdPosixLinkage.hh"
#include "XrdPosix/XrdPosixXrootd.hh"
#include "XrdPosix/XrdPosixXrootdPath.hh"
#include "XrdSys/XrdSysStatx.hh"

Include dependency graph for XrdPosix.cc:

Go to the source code of this file.

Macros
#define	ISMODE(x)   !strcmp(mode, x)

Functions
static void	fseteof (FILE *fp)
static void	fseterr (FILE *fp)
int	XrdPosix_Access (const char *path, int amode)
int	XrdPosix_Acl (const char *path, int cmd, int nentries, void *aclbufp)
int	XrdPosix_Chdir (const char *path)
int	XrdPosix_Close (int fildes)
int	XrdPosix_Closedir (DIR *dirp)
int	XrdPosix_Creat (const char *path, mode_t mode)
int	XrdPosix_Fclose (FILE *stream)
int	XrdPosix_Fcntl (int fd, int cmd,...)
int	XrdPosix_Fdatasync (int fildes)
int	XrdPosix_Fflush (FILE *stream)
FILE *	XrdPosix_Fopen (const char *path, const char *mode)
size_t	XrdPosix_Fread (void *ptr, size_t size, size_t nitems, FILE *stream)
int	XrdPosix_Fseek (FILE *stream, long offset, int whence)
int	XrdPosix_Fseeko (FILE *stream, long long offset, int whence)
int	XrdPosix_Fstat (int fildes, struct stat *buf)
int	XrdPosix_Fstatat (int dirfd, const char *path, struct stat *buf, int flags)
int	XrdPosix_FstatV (int ver, int fildes, struct stat *buf)
int	XrdPosix_Fsync (int fildes)
long	XrdPosix_Ftell (FILE *stream)
long long	XrdPosix_Ftello (FILE *stream)
int	XrdPosix_Ftruncate (int fildes, long long offset)
size_t	XrdPosix_Fwrite (const void *ptr, size_t size, size_t nitems, FILE *stream)
int	XrdPosix_isMyPath (const char *path)
off_t	XrdPosix_Lseek (int fildes, off_t offset, int whence)
int	XrdPosix_Lstat (const char *path, struct stat *buf)
int	XrdPosix_Mkdir (const char *path, mode_t mode)
int	XrdPosix_Open (const char *path, int oflag,...)
int	XrdPosix_Openat (int dirfd, const char *path, int flag,...)
DIR *	XrdPosix_Opendir (const char *path)
long	XrdPosix_Pathconf (const char *path, int name)
ssize_t	XrdPosix_Pread (int fildes, void *buf, size_t nbyte, off_t offset)
ssize_t	XrdPosix_Pwrite (int fildes, const void *buf, size_t nbyte, off_t offset)
ssize_t	XrdPosix_Read (int fildes, void *buf, size_t nbyte)
struct dirent *	XrdPosix_Readdir (DIR *dirp)
struct dirent64 *	XrdPosix_Readdir64 (DIR *dirp)
int	XrdPosix_Readdir64_r (DIR *dirp, struct dirent64 *entry, struct dirent64 **result)
int	XrdPosix_Readdir_r (DIR *dirp, struct dirent *entry, struct dirent **result)
ssize_t	XrdPosix_Readv (int fildes, const struct iovec *iov, int iovcnt)
int	XrdPosix_Rename (const char *oldpath, const char *newpath)
void	XrdPosix_Rewinddir (DIR *dirp)
int	XrdPosix_Rmdir (const char *path)
void	XrdPosix_Seekdir (DIR *dirp, long loc)
int	XrdPosix_Stat (const char *path, struct stat *buf)
int	XrdPosix_Statfs (const char *path, struct statfs *buf)
int	XrdPosix_Statvfs (const char *path, struct statvfs *buf)
int	XrdPosix_Statx (int dirfd, const char *path, int flags, unsigned int mask, XrdSysStatx *stx)
long	XrdPosix_Telldir (DIR *dirp)
int	XrdPosix_Truncate (const char *path, off_t offset)
int	XrdPosix_Unlink (const char *path)
char *	XrdPosix_URL (const char *path, char *buff, int blen)
ssize_t	XrdPosix_Write (int fildes, const void *buf, size_t nbyte)
ssize_t	XrdPosix_Writev (int fildes, const struct iovec *iov, int iovcnt)
static ssize_t	XrdResolveLink (const char *path, char *resolved, size_t rsize)

Variables
XrdPosixXrootd	Xroot
XrdPosixXrootPath	XrootPath
XrdPosixLinkage	Xunix

Macro Definition Documentation

ISMODE

#define ISMODE

(

x

)

!strcmp(mode, x)

Definition at line 362 of file XrdPosix.cc.

Function Documentation

fseteof()

static void fseteof ( FILE *  fp )

inlinestatic

Definition at line 90 of file XrdPosix.cc.

{
  /* Most systems provide FILE as a struct and the necessary bitmask in
     <stdio.h>, because they need it for implementing getc() and putc() as
     fast macros.  */
#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
  /* GNU libc, BeOS, Haiku, Linux libc5 */
  fp->_flags |= _IO_EOF_SEEN;
#elif defined __sferror || defined __APPLE__ || defined __DragonFly__ || defined __ANDROID__
  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
  fp->_flags |= __SEOF;
#elif defined _IOEOF
  /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
  fp->_flag |= _IOEOF;
#elif defined __UCLIBC__            /* uClibc */
  fp->__modeflags |= __FLAG_EOF;
#else
  (void) fseek(fp, 0L, SEEK_END);
#endif
}

References fseek().

Referenced by XrdPosix_Fread().

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fseterr()

static void fseterr ( FILE *  fp )

inlinestatic

Definition at line 67 of file XrdPosix.cc.

{
  /* Most systems provide FILE as a struct and the necessary bitmask in
     <stdio.h>, because they need it for implementing getc() and putc() as
     fast macros. This function is based on gnulib's fseterr.c */
#if defined _IO_ERR_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
  /* GNU libc, BeOS, Haiku, Linux libc5 */
  fp->_flags |= _IO_ERR_SEEN;
#elif defined __sferror || defined __APPLE__ || defined __DragonFly__ || defined __FreeBSD__ || defined __ANDROID__
  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
  fp->_flags |= __SERR;
#elif defined _IOERR
  /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
  fp->_flag |= _IOERR;
#elif defined __UCLIBC__            /* uClibc */
  fp->__modeflags |= __FLAG_ERROR;
#elif defined MUSL /* musl libc */
  __fseterr(fp);
#else
 #error "Unsupported platform! Please report it as a bug."
#endif
}

Referenced by XrdPosix_Fread(), and XrdPosix_Fwrite().

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XrdPosix_Access()

int XrdPosix_Access	(	const char *	path,
		int	amode
	)

Definition at line 165 of file XrdPosix.cc.

{
  char *myPath, buff[2048];
  char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res > 0) {
     // Return the results of a mkdir of a Unix file system
     //
     if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
       return Xunix.Access( path, amode);
 
     // Return the results of our version of access()
     //
     return Xroot.Access(myPath, amode);
   } else {
     return res;
   }
}

References XrdPosixXrootd::Access(), XrdPosixLinkage::Access, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by access().

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XrdPosix_Acl()

int XrdPosix_Acl	(	const char *	path,
		int	cmd,
		int	nentries,
		void *	aclbufp
	)

Definition at line 194 of file XrdPosix.cc.

{
  char unref[2049];
 
  ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
  if (res < 0) return res;
  return (XrootPath.URL(unref, 0, 0)
          ? Xunix.Acl("/tmp", cmd,nentries,aclbufp)
          : Xunix.Acl(path,   cmd,nentries,aclbufp));
}

References XrdPosixLinkage::Acl, XrdPosixXrootPath::URL(), XrdResolveLink(), XrootPath, and Xunix.

Referenced by acl().

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XrdPosix_Chdir()

int XrdPosix_Chdir

(

const char *

path

)

Definition at line 212 of file XrdPosix.cc.

{
  int rc;
  char unref[2049];
 
  ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
  if (res < 0) return res;
 
  // Set the working directory if the actual chdir succeeded
  //
  if (!(rc = Xunix.Chdir(path))) XrootPath.CWD(unref);
  return rc;
}

References XrdPosixLinkage::Chdir, XrdPosixXrootPath::CWD(), XrdResolveLink(), XrootPath, and Xunix.

Referenced by chdir().

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XrdPosix_Close()

int XrdPosix_Close

(

int

fildes

)

Definition at line 233 of file XrdPosix.cc.

{
 
// Return result of the close
//
   return (Xroot.myFD(fildes) ? Xroot.Close(fildes) : Xunix.Close(fildes));
}

References XrdPosixXrootd::Close(), XrdPosixLinkage::Close, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by close().

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XrdPosix_Closedir()

int XrdPosix_Closedir

(

DIR *

dirp

)

Definition at line 248 of file XrdPosix.cc.

{
 
   return (Xroot.isXrootdDir(dirp) ? Xroot.Closedir(dirp)
                                   : Xunix.Closedir(dirp));
}

References XrdPosixXrootd::Closedir(), XrdPosixLinkage::Closedir, XrdPosixXrootd::isXrootdDir(), Xroot, and Xunix.

Referenced by closedir().

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XrdPosix_Creat()

int XrdPosix_Creat	(	const char *	path,
		mode_t	mode
	)

Definition at line 262 of file XrdPosix.cc.

{
   extern int XrdPosix_Open(const char *path, int oflag, ...);
 
   return XrdPosix_Open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
}

References XrdPosix_Open().

Referenced by creat64().

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XrdPosix_Fclose()

int XrdPosix_Fclose

(

FILE *

stream

)

Definition at line 276 of file XrdPosix.cc.

{
   int nullfd = fileno(stream);
 
// Close the associated file
//
   if (Xroot.myFD(nullfd)) Xroot.Close(nullfd);
 
// Now close the stream
//
   return Xunix.Fclose(stream);
}

References XrdPosixXrootd::Close(), XrdPosixLinkage::Fclose, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fclose().

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XrdPosix_Fcntl()

int XrdPosix_Fcntl	(	int	fd,
		int	cmd,
			...
	)

Definition at line 296 of file XrdPosix.cc.

{
   va_list ap;
   void *theArg;
 
   if (Xroot.myFD(fd)) return 0;
   va_start(ap, cmd);
   theArg = va_arg(ap, void *);
   va_end(ap);
   return Xunix.Fcntl64(fd, cmd, theArg);
}

References XrdPosixLinkage::Fcntl64, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fcntl64().

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XrdPosix_Fdatasync()

int XrdPosix_Fdatasync

(

int

fildes

)

Definition at line 315 of file XrdPosix.cc.

{
 
// Return the result of the sync
//
   return (Xroot.myFD(fildes) ? Xroot.Fsync(fildes)
                              : Xunix.Fsync(fildes));
}

References XrdPosixXrootd::Fsync(), XrdPosixLinkage::Fsync, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fdatasync().

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XrdPosix_Fflush()

int XrdPosix_Fflush

(

FILE *

stream

)

Definition at line 346 of file XrdPosix.cc.

{
 
// Return the result of the fseek
//
   if (!stream || !Xroot.myFD(fileno(stream)))
      return Xunix.Fflush(stream);
 
   return Xroot.Fsync(fileno(stream));
}

References XrdPosixLinkage::Fflush, XrdPosixXrootd::Fsync(), XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fflush().

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XrdPosix_Fopen()

FILE* XrdPosix_Fopen	(	const char *	path,
		const char *	mode
	)

Definition at line 366 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   int erc, fd, omode;
   FILE *stream;
 
  char unref[2049];
 
  ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
  if (res < 0) return 0;
 
// Transfer to unix if this is not our path
//
   if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
      return Xunix.Fopen64(path, mode);
 
// Translate the mode flags
//
        if (ISMODE("r")  || ISMODE("rb"))                   omode = O_RDONLY;
   else if (ISMODE("w")  || ISMODE("wb"))                   omode = O_WRONLY
                                                        | O_CREAT | O_TRUNC;
   else if (ISMODE("a")  || ISMODE("ab"))                   omode = O_WRONLY
                                                        | O_CREAT | O_APPEND;
   else if (ISMODE("r+") || ISMODE("rb+") || ISMODE("r+b")) omode = O_RDWR;
   else if (ISMODE("w+") || ISMODE("wb+") || ISMODE("w+b")) omode = O_RDWR
                                                        | O_CREAT | O_TRUNC;
   else if (ISMODE("a+") || ISMODE("ab+") || ISMODE("a+b")) omode = O_RDWR
                                                        | O_CREAT | O_APPEND;
   else {errno = EINVAL; return 0;}
 
// Now open the file
//
   if ((fd = Xroot.Open(myPath, omode | XrdPosixXrootd::isStream , 0)) < 0)
      return 0;
 
// First obtain a free stream
//
   if (!(stream = fdopen(fd, mode)))
      {erc = errno; Xroot.Close(fd); errno = erc;}
 
// All done
//
   return stream;
}

References XrdPosixXrootd::Close(), XrdPosixLinkage::Fopen64, ISMODE, XrdPosixXrootd::isStream, XrdPosixXrootd::Open(), XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by fopen64().

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XrdPosix_Fread()

size_t XrdPosix_Fread	(	void *	ptr,
		size_t	size,
		size_t	nitems,
		FILE *	stream
	)

Definition at line 418 of file XrdPosix.cc.

{
   ssize_t bytes;
   size_t rc = 0;
   int fd = fileno(stream);
 
   if (!Xroot.myFD(fd)) return Xunix.Fread(ptr, size, nitems, stream);
 
   bytes = Xroot.Read(fd, ptr, size*nitems);
 
// Get the right return code. Note that we cannot emulate the flags in sunx86
//
   if (bytes > 0 && size) rc = bytes/size;
   else if (bytes < 0) fseterr(stream);
   else                fseteof(stream);
 
   return rc;
}

References XrdPosixLinkage::Fread, fseteof(), fseterr(), XrdPosixXrootd::myFD(), XrdPosixXrootd::Read(), Xroot, and Xunix.

Referenced by fread().

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XrdPosix_Fseek()

int XrdPosix_Fseek	(	FILE *	stream,
		long	offset,
		int	whence
	)

Definition at line 444 of file XrdPosix.cc.

{
 
// Return the result of the fseek
//
   if (!Xroot.myFD(fileno(stream)))
      return Xunix.Fseek( stream, offset, whence);
 
   return (Xroot.Lseek(fileno(stream), offset, whence) < 0 ? -1 : 0);
}

References XrdPosixLinkage::Fseek, XrdPosixXrootd::Lseek(), XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fseek().

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XrdPosix_Fseeko()

int XrdPosix_Fseeko	(	FILE *	stream,
		long long	offset,
		int	whence
	)

Definition at line 462 of file XrdPosix.cc.

{
 
// Return the result of the fseek
//
   if (!Xroot.myFD(fileno(stream)))
      return Xunix.Fseeko64(stream, offset, whence);
 
   return (Xroot.Lseek(fileno(stream), offset, whence) < 0 ? -1 : 0);
}

References XrdPosixLinkage::Fseeko64, XrdPosixXrootd::Lseek(), XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fseeko64().

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XrdPosix_Fstat()

int XrdPosix_Fstat	(	int	fildes,
		struct stat *	buf
	)

Definition at line 480 of file XrdPosix.cc.

  {
    if (Xroot.myFD(fildes)){
      return(Xroot.Fstat(fildes, buf));
    } else {
#ifdef SYS_fstat
      return syscall(SYS_fstat, fildes, buf);
#else
      errno = ENOSYS;
      return -1;
#endif
    }
  }

References XrdPosixXrootd::Fstat(), XrdPosixXrootd::myFD(), and Xroot.

Referenced by fstat64().

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XrdPosix_Fstatat()

int XrdPosix_Fstatat	(	int	dirfd,
		const char *	path,
		struct stat *	buf,
		int	flags
	)

Definition at line 514 of file XrdPosix.cc.

{
  if (path && *path) {
    char buff[2048];
    char unref[2049];
 
    if (!(flags & AT_SYMLINK_NOFOLLOW)) {
      // We need to follow until path is no longer a link
      ssize_t res = XrdResolveLink(path, unref, sizeof(unref));
      if (res < 0) return res;
      // links are pointing to file unref now which is not a link
    } else {
      strncpy(unref, path, 2048);
    }
    if (char *myPath = XrootPath.URL(unref, buff, sizeof(buff))) {
      int ret = Xroot.Stat(myPath,  (struct stat *)buf);
      return (ret);
    } else {
      // not a root file
#ifdef SYS_newfstatat
      return syscall(SYS_newfstatat, dirfd, path, buf, flags);
#else
#ifdef SYS_fstatat
      return syscall(SYS_fstatat, dirfd, path, buf, flags);
#else
      errno = ENOSYS;
      return -1;
#endif
#endif
    }
  } else {
    errno = EFAULT;
  }
  return -1;
}

References dirfd, stat, XrdPosixXrootd::Stat(), XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, and XrootPath.

Referenced by fstatat64().

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XrdPosix_FstatV()

int XrdPosix_FstatV	(	int	ver,
		int	fildes,
		struct stat *	buf
	)

Definition at line 493 of file XrdPosix.cc.

  {
    if (Xroot.myFD(fildes)){
      return(Xroot.Fstat(fildes, buf));
    } else {
#ifdef SYS_fstat
      return syscall(SYS_fstat, fildes, buf);
#else
      errno = ENOSYS;
      return -1;
#endif
    }
  }

References XrdPosixXrootd::Fstat(), XrdPosixXrootd::myFD(), and Xroot.

Referenced by fstat64().

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XrdPosix_Fsync()

int XrdPosix_Fsync

(

int

fildes

)

Definition at line 557 of file XrdPosix.cc.

{
 
// Return the result of the sync
//
   return (Xroot.myFD(fildes) ? Xroot.Fsync(fildes)
                              : Xunix.Fsync(fildes));
}

References XrdPosixXrootd::Fsync(), XrdPosixLinkage::Fsync, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by fsync().

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XrdPosix_Ftell()

long XrdPosix_Ftell

(

FILE *

stream

)

Definition at line 573 of file XrdPosix.cc.

{
 
// Return the result of the tell
//
   if (!Xroot.myFD(fileno(stream))) return Xunix.Ftell(stream);
 
   return static_cast<long>(Xroot.Lseek(fileno(stream), 0, SEEK_CUR));
}

References XrdPosixLinkage::Ftell, XrdPosixXrootd::Lseek(), XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by ftell().

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XrdPosix_Ftello()

long long XrdPosix_Ftello

(

FILE *

stream

)

Definition at line 590 of file XrdPosix.cc.

{
 
// Return the result of the tell
//
   if (!Xroot.myFD(fileno(stream))) return Xunix.Ftello64(stream);
 
   return Xroot.Lseek(fileno(stream), 0, SEEK_CUR);
}

References XrdPosixLinkage::Ftello64, XrdPosixXrootd::Lseek(), XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by ftello64().

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XrdPosix_Ftruncate()

int XrdPosix_Ftruncate	(	int	fildes,
		long long	offset
	)

Definition at line 607 of file XrdPosix.cc.

{
 
// Return the result of the ftruncate
//
   return (Xroot.myFD(fildes) ? Xroot.Ftruncate  (fildes, offset)
                              : Xunix.Ftruncate64(fildes, offset));
}

References XrdPosixXrootd::Ftruncate(), XrdPosixLinkage::Ftruncate64, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by ftruncate64().

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XrdPosix_Fwrite()

size_t XrdPosix_Fwrite	(	const void *	ptr,
		size_t	size,
		size_t	nitems,
		FILE *	stream
	)

Definition at line 623 of file XrdPosix.cc.

{
   size_t bytes, rc = 0;
   int fd = fileno(stream);
 
   if (!Xroot.myFD(fd)) return Xunix.Fwrite(ptr, size, nitems, stream);
 
   bytes = Xroot.Write(fd, ptr, size*nitems);
 
// Get the right return code.
//
   if (bytes > 0 && size) rc = bytes/size;
   else fseterr(stream);
 
   return rc;
}

References fseterr(), XrdPosixLinkage::Fwrite, XrdPosixXrootd::myFD(), XrdPosixXrootd::Write(), Xroot, and Xunix.

Referenced by fwrite().

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XrdPosix_isMyPath()

int XrdPosix_isMyPath

(

const char *

path

)

Definition at line 1287 of file XrdPosix.cc.

{
    return (0 != XrootPath.URL(path, 0, 0));
}

References XrdPosixXrootPath::URL(), and XrootPath.

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XrdPosix_Lseek()

off_t XrdPosix_Lseek	(	int	fildes,
		off_t	offset,
		int	whence
	)

Definition at line 689 of file XrdPosix.cc.

{
 
// Return the operation of the seek
//
   return (Xroot.myFD(fildes) ? Xroot.Lseek  (fildes, offset, whence)
                              : Xunix.Lseek64(fildes, offset, whence));
}

References XrdPosixXrootd::Lseek(), XrdPosixLinkage::Lseek64, XrdPosixXrootd::myFD(), Xroot, and Xunix.

Referenced by llseek(), and lseek64().

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XrdPosix_Lstat()

int XrdPosix_Lstat	(	const char *	path,
		struct stat *	buf
	)

Definition at line 705 of file XrdPosix.cc.

{
  char *myPath, buff[2048];
 
// Make sure a path was passed
//
  if (!path) {errno = EFAULT; return -1;}
 
// Return the results of an open of a Unix file
//
  myPath = XrootPath.URL(path, buff, sizeof(buff));
  if (myPath){
    return Xroot.Stat(myPath, buf);
  } else {
#ifdef SYS_lstat
    return syscall(SYS_lstat, path, buf);
#else
    errno = ENOSYS;
    return -1;
#endif
  }
}

References XrdPosixXrootd::Stat(), XrdPosixXrootPath::URL(), Xroot, and XrootPath.

Referenced by lstat64().

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XrdPosix_Mkdir()

int XrdPosix_Mkdir	(	const char *	path,
		mode_t	mode
	)

Definition at line 735 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
 
// Return the results of a mkdir of a Unix file system
//
   if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
      return Xunix.Mkdir(path, mode);
 
// Return the results of an mkdir of an xrootd file system
//
   return Xroot.Mkdir(myPath, mode);
}

References XrdPosixXrootd::Mkdir(), XrdPosixLinkage::Mkdir, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by mkdir().

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XrdPosix_Open()

int XrdPosix_Open	(	const char *	path,
		int	oflag,
			...
	)

Definition at line 760 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   char unref[2049];
   va_list ap;
   int mode;
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
   // Return the results of an open of a Unix file
   //
   if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
     {if (!(oflag & O_CREAT)) return Xunix.Open64(unref, oflag);
       va_start(ap, oflag);
       mode = va_arg(ap, int);
       va_end(ap);
       return Xunix.Open64(unref, oflag, (mode_t)mode);
     }
 
   // Return the results of an open of an xrootd file
   //
   if (!(oflag & O_CREAT)) return Xroot.Open(myPath, oflag);
   va_start(ap, oflag);
   mode = va_arg(ap, int);
   va_end(ap);
   return Xroot.Open(myPath, oflag, (mode_t)mode);
}

References XrdPosixXrootd::Open(), XrdPosixLinkage::Open64, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by open64(), and XrdPosix_Creat().

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XrdPosix_Openat()

int XrdPosix_Openat	(	int	dirfd,
		const char *	path,
		int	flag,
			...
	)

Definition at line 794 of file XrdPosix.cc.

{
  char *myPath, buff[2048];
  char unref[2049];
  va_list ap;
  int mode;
  ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
  if (res < 0) return res;
 
  if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff)))){
    mode_t mode = 0;
    if (flag & (O_CREAT)) {
      va_start(ap, flag);
      mode = va_arg(ap, int);
      va_end(ap);
    }
#ifdef SYS_openat
    return (syscall(SYS_openat, dirfd, path, flag, (mode_t)mode));
#else
    errno = ENOSYS;
    return -1;
#endif
  } else {
    // Return the results of an open of an xrootd file
    //
    if (!(flag & O_CREAT)) return Xroot.Open(myPath, flag);
    va_start(ap, flag);
    mode = va_arg(ap, int);
    va_end(ap);
    return Xroot.Open(myPath, flag, (mode_t)mode);
  }
}

References dirfd, XrdPosixXrootd::Open(), XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, and XrootPath.

Referenced by openat().

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XrdPosix_Opendir()

DIR* XrdPosix_Opendir

(

const char *

path

)

Definition at line 834 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return NULL;
 
// Unix opendir
//
   if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
      return Xunix.Opendir(path);
 
// Xrootd opendir
//
   return Xroot.Opendir(myPath);
}

References XrdPosixXrootd::Opendir(), XrdPosixLinkage::Opendir, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by opendir().

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XrdPosix_Pathconf()

long XrdPosix_Pathconf	(	const char *	path,
		int	name
	)

Definition at line 861 of file XrdPosix.cc.

{
  char unref[2049];
 
  ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
  if (res < 0) return res;
 
  return (XrootPath.URL(unref, 0, 0) ? Xunix.Pathconf("/tmp", name)
                                      : Xunix.Pathconf(unref,   name));
}

References XrdPosixLinkage::Pathconf, XrdPosixXrootPath::URL(), XrdResolveLink(), XrootPath, and Xunix.

Referenced by pathconf().

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XrdPosix_Pread()

ssize_t XrdPosix_Pread	(	int	fildes,
		void *	buf,
		size_t	nbyte,
		off_t	offset
	)

Definition at line 879 of file XrdPosix.cc.

{
 
// Return the results of the read
//
   return (Xroot.myFD(fildes) ? Xroot.Pread  (fildes, buf, nbyte, offset)
                              : Xunix.Pread64(fildes, buf, nbyte, offset));
}

References XrdPosixXrootd::myFD(), XrdPosixXrootd::Pread(), XrdPosixLinkage::Pread64, Xroot, and Xunix.

Referenced by pread64().

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XrdPosix_Pwrite()

ssize_t XrdPosix_Pwrite	(	int	fildes,
		const void *	buf,
		size_t	nbyte,
		off_t	offset
	)

Definition at line 895 of file XrdPosix.cc.

{
 
// Return the results of the write
//
   return (Xroot.myFD(fildes) ? Xroot.Pwrite  (fildes, buf, nbyte, offset)
                              : Xunix.Pwrite64(fildes, buf, nbyte, offset));
}

References XrdPosixXrootd::myFD(), XrdPosixXrootd::Pwrite(), XrdPosixLinkage::Pwrite64, Xroot, and Xunix.

Referenced by pwrite64().

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XrdPosix_Read()

ssize_t XrdPosix_Read	(	int	fildes,
		void *	buf,
		size_t	nbyte
	)

Definition at line 911 of file XrdPosix.cc.

{
 
// Return the results of the read
//
   return (Xroot.myFD(fildes) ? Xroot.Read(fildes, buf, nbyte)
                              : Xunix.Read(fildes, buf, nbyte));
}

References XrdPosixXrootd::myFD(), XrdPosixXrootd::Read(), XrdPosixLinkage::Read, Xroot, and Xunix.

Referenced by read().

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XrdPosix_Readdir()

struct dirent* XrdPosix_Readdir

(

DIR *

dirp

)

Definition at line 945 of file XrdPosix.cc.

{
 
// Return result of readdir
//
   return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir(dirp)
                                   : Xunix.Readdir(dirp));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Readdir(), XrdPosixLinkage::Readdir, Xroot, and Xunix.

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XrdPosix_Readdir64()

struct dirent64* XrdPosix_Readdir64

(

DIR *

dirp

)

Definition at line 954 of file XrdPosix.cc.

{
 
// Return result of readdir
//
   return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir64(dirp)
                                   : Xunix.Readdir64(dirp));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Readdir64(), XrdPosixLinkage::Readdir64, Xroot, and Xunix.

Referenced by readdir64().

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XrdPosix_Readdir64_r()

int XrdPosix_Readdir64_r	(	DIR *	dirp,
		struct dirent64 *	entry,
		struct dirent64 **	result
	)

Definition at line 979 of file XrdPosix.cc.

{
 
// Return result of readdir
//
   return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir64_r(dirp,entry,result)
                                   : Xunix.Readdir64_r(dirp,entry,result));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Readdir64_r(), XrdPosixLinkage::Readdir64_r, Xroot, and Xunix.

Referenced by readdir64_r().

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XrdPosix_Readdir_r()

int XrdPosix_Readdir_r	(	DIR *	dirp,
		struct dirent *	entry,
		struct dirent **	result
	)

Definition at line 970 of file XrdPosix.cc.

{
 
// Return result of readdir
//
   return (Xroot.isXrootdDir(dirp) ? Xroot.Readdir_r(dirp,entry,result)
                                   : Xunix.Readdir_r(dirp,entry,result));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Readdir_r(), XrdPosixLinkage::Readdir_r, Xroot, and Xunix.

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XrdPosix_Readv()

ssize_t XrdPosix_Readv	(	int	fildes,
		const struct iovec *	iov,
		int	iovcnt
	)

Definition at line 927 of file XrdPosix.cc.

{
 
// Return results of the readv
//
   return (Xroot.myFD(fildes) ? Xroot.Readv(fildes, iov, iovcnt)
                              : Xunix.Readv(fildes, iov, iovcnt));
}

References XrdPosixXrootd::myFD(), XrdPosixXrootd::Readv(), XrdPosixLinkage::Readv, Xroot, and Xunix.

Referenced by readv().

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XrdPosix_Rename()

int XrdPosix_Rename	(	const char *	oldpath,
		const char *	newpath
	)

Definition at line 995 of file XrdPosix.cc.

{
   char *oldPath, buffold[2048], *newPath, buffnew[2048];
 
// Make sure a path was passed
//
   if (!oldpath || !newpath) {errno = EFAULT; return -1;}
 
// Return the results of a mkdir of a Unix file system
//
   if (!(oldPath = XrootPath.URL(oldpath, buffold, sizeof(buffold)))
   ||  !(newPath = XrootPath.URL(newpath, buffnew, sizeof(buffnew))))
      return Xunix.Rename(oldpath, newpath);
 
// Return the results of an mkdir of an xrootd file system
//
   return Xroot.Rename(oldPath, newPath);
}

References XrdPosixXrootd::Rename(), XrdPosixLinkage::Rename, XrdPosixXrootPath::URL(), Xroot, XrootPath, and Xunix.

Referenced by rename().

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XrdPosix_Rewinddir()

void XrdPosix_Rewinddir

(

DIR *

dirp

)

Definition at line 1021 of file XrdPosix.cc.

{
 
// Return result of rewind
//
   return (Xroot.isXrootdDir(dirp) ? Xroot.Rewinddir(dirp)
                                   : Xunix.Rewinddir(dirp));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Rewinddir(), XrdPosixLinkage::Rewinddir, Xroot, and Xunix.

Referenced by rewinddir().

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XrdPosix_Rmdir()

int XrdPosix_Rmdir

(

const char *

path

)

Definition at line 1037 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
 
// Make sure a path was passed
//
   if (!path) {errno = EFAULT; return -1;}
 
// Return the results of a mkdir of a Unix file system
//
   if (!(myPath = XrootPath.URL(path, buff, sizeof(buff))))
      return Xunix.Rmdir(path);
 
// Return the results of an mkdir of an xrootd file system
//
   return Xroot.Rmdir(myPath);
}

References XrdPosixXrootd::Rmdir(), XrdPosixLinkage::Rmdir, XrdPosixXrootPath::URL(), Xroot, XrootPath, and Xunix.

Referenced by rmdir().

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XrdPosix_Seekdir()

void XrdPosix_Seekdir	(	DIR *	dirp,
		long	loc
	)

Definition at line 1062 of file XrdPosix.cc.

{
 
// Call seekdir
//
   (Xroot.isXrootdDir(dirp) ? Xroot.Seekdir(dirp, loc)
                            : Xunix.Seekdir(dirp, loc));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Seekdir(), XrdPosixLinkage::Seekdir, Xroot, and Xunix.

Referenced by seekdir().

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XrdPosix_Stat()

int XrdPosix_Stat	(	const char *	path,
		struct stat *	buf
	)

Definition at line 1078 of file XrdPosix.cc.

{
   char buff[2048];
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
 
   // links are pointing to file unref now which is not a link
   if (char *myPath = XrootPath.URL(unref, buff, sizeof(buff))) {
     int ret = Xroot.Stat(myPath, buf);
     return (ret);
   } else {
     // not a root file
#ifdef SYS_stat
     return syscall(SYS_stat, path, buf);
#else
     errno = ENOSYS;
     return -1;
#endif
   }
}

References XrdPosixXrootd::Stat(), XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, and XrootPath.

Referenced by stat64(), and XrdPosix_Statx().

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XrdPosix_Statfs()

int XrdPosix_Statfs	(	const char *	path,
		struct statfs *	buf
	)

Definition at line 1146 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
 
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
 
// Return the results of an open of a Unix file
//
   return ((myPath = XrootPath.URL(unref, buff, sizeof(buff)))
          ? Xroot.Statfs(myPath, buf)
          : Xunix.Statfs64(path, (struct statfs64 *)buf));
}

References XrdPosixXrootd::Statfs(), statfs64(), XrdPosixLinkage::Statfs64, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by statfs64().

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XrdPosix_Statvfs()

int XrdPosix_Statvfs	(	const char *	path,
		struct statvfs *	buf
	)

Definition at line 1169 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
 
// Return the results of an open of a Unix file
//
   return ((myPath = XrootPath.URL(unref, buff, sizeof(buff)))
          ? Xroot.Statvfs(myPath, buf)
          : Xunix.Statvfs64(path, (struct statvfs64 *)buf));
}

References XrdPosixXrootd::Statvfs(), statvfs64(), XrdPosixLinkage::Statvfs64, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

Referenced by statvfs64().

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XrdPosix_Statx()

int XrdPosix_Statx	(	int	dirfd,
		const char *	path,
		int	flags,
		unsigned int	mask,
		XrdSysStatx *	stx
	)

Definition at line 1104 of file XrdPosix.cc.

{
  if (path && *path) {
    char buff[2048];
    char unref[2049];
 
    if (!(flags & AT_SYMLINK_NOFOLLOW)) {
      // We need to follow until path is no longer a link
      ssize_t res = XrdResolveLink(path, unref, sizeof(unref));
      if (res < 0) return res;
    } else {
      strncpy(unref, path, 2048);
    }
    if (char *myPath = XrootPath.URL(unref, buff, sizeof(buff))) {
      struct stat st{};
      if (int ret = XrdPosix_Stat(myPath, &st))
        return ret;
      XrdSysStatxHelpers::Stat2Statx(st, *stx);
      return 0;
    } else {
#ifdef SYS_statx
      int ret = syscall(SYS_statx, dirfd, path, flags, mask, stx);
      return ret;
#else
      errno = ENOSYS;
      return -1;
#endif
    }
  } else {
    errno = EFAULT;
  }
  return -1;
}

References dirfd, stat, XrdPosixXrootPath::URL(), XrdPosix_Stat(), XrdResolveLink(), and XrootPath.

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XrdPosix_Telldir()

long XrdPosix_Telldir

(

DIR *

dirp

)

Definition at line 1191 of file XrdPosix.cc.

{
 
// Return result of telldir
//
   return (Xroot.isXrootdDir(dirp) ? Xroot.Telldir(dirp)
                                   : Xunix.Telldir(dirp));
}

References XrdPosixXrootd::isXrootdDir(), XrdPosixXrootd::Telldir(), XrdPosixLinkage::Telldir, Xroot, and Xunix.

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XrdPosix_Truncate()

int XrdPosix_Truncate	(	const char *	path,
		off_t	offset
	)

Definition at line 1207 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
 
// Return the results of a truncate of a Unix file system
//
   if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
      return Xunix.Truncate64(path, offset);
 
// Return the results of an truncate of an xrootd file system
//
   return Xroot.Truncate(myPath, offset);
}

References XrdPosixXrootd::Truncate(), XrdPosixLinkage::Truncate64, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

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XrdPosix_Unlink()

int XrdPosix_Unlink

(

const char *

path

)

Definition at line 1232 of file XrdPosix.cc.

{
   char *myPath, buff[2048];
   char unref[2049];
 
   ssize_t res=XrdResolveLink(path, unref, sizeof(unref));
   if (res < 0) return res;
 
// Return the result of a unlink of a Unix file
//
   if (!(myPath = XrootPath.URL(unref, buff, sizeof(buff))))
      return Xunix.Unlink(path);
 
// Return the results of an unlink of an xrootd file
//
   return Xroot.Unlink(myPath);
}

References XrdPosixXrootd::Unlink(), XrdPosixLinkage::Unlink, XrdPosixXrootPath::URL(), XrdResolveLink(), Xroot, XrootPath, and Xunix.

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XrdPosix_URL()

char* XrdPosix_URL	(	const char *	path,
		char *	buff,
		int	blen
	)

Definition at line 1296 of file XrdPosix.cc.

{
   return XrootPath.URL(path, buff, blen);
}

References XrdPosixXrootPath::URL(), and XrootPath.

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XrdPosix_Write()

ssize_t XrdPosix_Write	(	int	fildes,
		const void *	buf,
		size_t	nbyte
	)

Definition at line 1257 of file XrdPosix.cc.

{
 
// Return the results of the write
//
   return (Xroot.myFD(fildes) ? Xroot.Write(fildes, buf, nbyte)
                              : Xunix.Write(fildes, buf, nbyte));
}

References XrdPosixXrootd::myFD(), XrdPosixXrootd::Write(), XrdPosixLinkage::Write, Xroot, and Xunix.

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XrdPosix_Writev()

ssize_t XrdPosix_Writev	(	int	fildes,
		const struct iovec *	iov,
		int	iovcnt
	)

Definition at line 1273 of file XrdPosix.cc.

{
 
// Return results of the writev
//
   return (Xroot.myFD(fildes) ? Xroot.Writev(fildes, iov, iovcnt)
                              : Xunix.Writev(fildes, iov, iovcnt));
}

References XrdPosixXrootd::myFD(), XrdPosixXrootd::Writev(), XrdPosixLinkage::Writev, Xroot, and Xunix.

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XrdResolveLink()

static ssize_t XrdResolveLink ( const char *  path, char *  resolved, size_t  rsize  )

static

Definition at line 114 of file XrdPosix.cc.

{
  // Make sure a path was passed
  //
  if (!path) {
    errno = EINVAL;
    return -1;
  }
 
  char unref[2049], filename[2049];
  char *result = realpath(path, nullptr);
 
  if (result) {
    strlcpy(filename, result, sizeof(filename));
    free(result);
  } else {
    bzero(filename, sizeof(filename));
    bzero(unref, sizeof(unref));
 
    strlcpy(filename, path, sizeof(filename));
 
    // if it is a link, follow it until the end
    int i = 0;
    errno = 0;
    while (readlink(filename, unref, sizeof(unref)) > 0 && ++i < 10) {
      strlcpy(filename, unref, sizeof(filename));
      bzero(unref, sizeof(unref)); // reset unref buffer
    }
    if (i == 10) {
      errno = ELOOP;
      return -1;
    }
    // succeed only if we found a file (EINVAL returned),
    // or a link to a remote file (ENOENT returned)
    if (errno != EINVAL && errno != ENOENT)
      return -1;
  }
  size_t len = strlen(filename);
  if (len > rsize) {
    errno = ENAMETOOLONG;
    return -1;
  }
  strlcpy(resolved, filename, rsize);
  return len;
}

References strlcpy().

Referenced by XrdPosix_Access(), XrdPosix_Acl(), XrdPosix_Chdir(), XrdPosix_Fopen(), XrdPosix_Fstatat(), XrdPosix_Mkdir(), XrdPosix_Open(), XrdPosix_Openat(), XrdPosix_Opendir(), XrdPosix_Pathconf(), XrdPosix_Stat(), XrdPosix_Statfs(), XrdPosix_Statvfs(), XrdPosix_Statx(), XrdPosix_Truncate(), and XrdPosix_Unlink().

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Variable Documentation

Xroot

XrdPosixXrootd Xroot

Definition at line 53 of file XrdPosix.cc.

Referenced by XrdPosix_Access(), XrdPosix_Close(), XrdPosix_Closedir(), XrdPosix_Fclose(), XrdPosix_Fcntl(), XrdPosix_Fdatasync(), XrdPosix_Fflush(), XrdPosix_Fopen(), XrdPosix_Fread(), XrdPosix_Fseek(), XrdPosix_Fseeko(), XrdPosix_Fstat(), XrdPosix_Fstatat(), XrdPosix_FstatV(), XrdPosix_Fsync(), XrdPosix_Ftell(), XrdPosix_Ftello(), XrdPosix_Ftruncate(), XrdPosix_Fwrite(), XrdPosix_Lseek(), XrdPosix_Lstat(), XrdPosix_Mkdir(), XrdPosix_Open(), XrdPosix_Openat(), XrdPosix_Opendir(), XrdPosix_Pread(), XrdPosix_Pwrite(), XrdPosix_Read(), XrdPosix_Readdir(), XrdPosix_Readdir64(), XrdPosix_Readdir64_r(), XrdPosix_Readdir_r(), XrdPosix_Readv(), XrdPosix_Rename(), XrdPosix_Rewinddir(), XrdPosix_Rmdir(), XrdPosix_Seekdir(), XrdPosix_Stat(), XrdPosix_Statfs(), XrdPosix_Statvfs(), XrdPosix_Telldir(), XrdPosix_Truncate(), XrdPosix_Unlink(), XrdPosix_Write(), and XrdPosix_Writev().

XrootPath

XrdPosixXrootPath XrootPath

Definition at line 55 of file XrdPosix.cc.

Referenced by XrdPosix_Access(), XrdPosix_Acl(), XrdPosix_Chdir(), XrdPosix_Fopen(), XrdPosix_Fstatat(), XrdPosix_isMyPath(), XrdPosix_Lstat(), XrdPosix_Mkdir(), XrdPosix_Open(), XrdPosix_Openat(), XrdPosix_Opendir(), XrdPosix_Pathconf(), XrdPosix_Rename(), XrdPosix_Rmdir(), XrdPosix_Stat(), XrdPosix_Statfs(), XrdPosix_Statvfs(), XrdPosix_Statx(), XrdPosix_Truncate(), XrdPosix_Unlink(), and XrdPosix_URL().

Xunix

XrdPosixLinkage Xunix

extern

Definition at line 57 of file XrdPosixLinkage.cc.

Referenced by XrdPosix_Access(), XrdPosix_Acl(), XrdPosix_Chdir(), XrdPosix_Close(), XrdPosix_Closedir(), XrdPosix_Fclose(), XrdPosix_Fcntl(), XrdPosix_Fdatasync(), XrdPosix_Fflush(), XrdPosix_Fopen(), XrdPosix_Fread(), XrdPosix_Fseek(), XrdPosix_Fseeko(), XrdPosix_Fsync(), XrdPosix_Ftell(), XrdPosix_Ftello(), XrdPosix_Ftruncate(), XrdPosix_Fwrite(), XrdPosix_Lseek(), XrdPosix_Mkdir(), XrdPosix_Open(), XrdPosix_Opendir(), XrdPosix_Pathconf(), XrdPosix_Pread(), XrdPosix_Pwrite(), XrdPosix_Read(), XrdPosix_Readdir(), XrdPosix_Readdir64(), XrdPosix_Readdir64_r(), XrdPosix_Readdir_r(), XrdPosix_Readv(), XrdPosix_Rename(), XrdPosix_Rewinddir(), XrdPosix_Rmdir(), XrdPosix_Seekdir(), XrdPosix_Statfs(), XrdPosix_Statvfs(), XrdPosix_Telldir(), XrdPosix_Truncate(), XrdPosix_Unlink(), XrdPosix_Write(), and XrdPosix_Writev().