rfio_open64(3) [debian man page]

RFIO_OPEN(3)						      Rfio Library Functions						      RFIO_OPEN(3)

NAME

       rfio_open - opens a file

SYNOPSIS

       #include <sys/types.h>
       #include "rfio_api.h"

       int rfio_open (const char *path, int flags, int mode);

       Under Linux, for large files:
       #define _LARGEFILE64_SOURCE
       #include <sys/types.h>
       #include "rfio_api.h"

       int rfio_open64 (const char *path, int flags, int mode);

       For large files, under other systems:
       #include <sys/types.h>
       #include "rfio_api.h"

       int rfio_open64 (const char *path, int flags, int mode);

DESCRIPTION

       rfio_open  opens  the file whose name is the string pointed to by path, a character string containing the filename specification, and asso-
       ciates a FILE stream with it.
       flags are formed by ORing the following values:

	       O_RDONLY        Open for reading only
	       O_WRONLY        Open for writing only
	       O_RDWR	       Open for reading and writing
	       O_NDELAY        Do not block on open
	       O_APPEND        Append on each write
	       O_CREAT	       Create file if it does not exist
	       O_TRUNC	       Truncate size to 0
	       O_EXCL	       Error if create and file exists
	       O_LARGEFILE     When size can be superior to 2GB-1.
			       See NOTES

       mode specifies the permission bits to be set if the file is created.

       Opening a file with O_APPEND set causes each write on the file to be appended to the end.  If O_TRUNC is specified and the file exists, the
       file  is truncated to zero length.  If O_EXCL is set with O_CREAT, then if the file already exists, the open returns an error.  This can be
       used to implement a simple exclusive access locking mechanism.  If O_EXCL is set and the last component of the pathname is a symbolic link,
       the  open  will	succeed  even  if the symbolic link points to an existing name.  If the O_NDELAY flag is specified and the open call would
       result in the process being blocked for some reason (for example waiting for a carrier on a dial-up line), the  open  returns  immediately.
       The  first time the process attempts to perform IO on the open file, it will block (not currently implemented). On systems that support the
       Large Files, O_LARGEFILE in rfio_open allows files whose sizes cannot be represented in 31 bits to be opened.

RETURN VALUE

       If successful, returns a non-negative integer which may be used to refer to the file on subsequent  rfio_write,	rfio_read  and	rfio_close
       calls.  On failure, rfio_open returns -1 and the error code is stored in serrno.

ERRORS

       ENOENT	    The named file/directory does not exist or is a null pathname.

       EACCES	    Search permission is denied on a component of the path prefix.

       EBUSY	    Device or resource busy. Happens if you try to open in write mode a LCG file that is in an active migration stream.

       EFAULT	    path is a NULL pointer.

       ENOTDIR	    A component of path prefix is not a directory.

       ENAMETOOLONG The length of path exceeds CA_MAXPATHLEN or the length of a path component exceeds CA_MAXNAMELEN.

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

SEE ALSO

       Castor_limits(4),rfio_write(3),rfio_read(3),rfio_close(3)

NOTES

       On  Irix,  Tru64  and  IA64 the 64 bit mode is the default one, open and open64 are identical. The flag O_LARGEFILE is accepted on Irix and
       IA64 (where it has no effect) but not on Tru64.	On all other platforms, rfio_open with O_LARGEFILE is equivalent to a call to rfio_open64.

AUTHOR

       LCG Grid Deployment Team

LCG
							   $Date: 2005/03/31 13:13:03 $ 					      RFIO_OPEN(3)

RFIO_STAT(3)						      Rfio Library Functions						      RFIO_STAT(3)

NAME

       rfio_stat - get information about a file or directory

SYNOPSIS

       #include <sys/types.h>
       #include "rfio_api.h"

       int rfio_stat (const char *path, struct stat *statbuf);
       int rfio_fstat (int s, struct stat *statbuf);
       int rfio_lstat (const char *path, struct stat *statbuf);
       int rfio_mstat (const char *path, struct stat *statbuf);
       int rfio_mstat_reset ();
       int rfio_end ();

       Under Linux, for large files:
       #define _LARGEFILE64_SOURCE
       #include <sys/types.h>
       #include "rfio_api.h"

       int rfio_stat64 (const char *path, struct stat64 *statbuf);
       int rfio_fstat64 (int s, struct stat64 *statbuf);
       int rfio_lstat64 (const char *path, struct stat64 *statbuf);
       int rfio_mstat64 (const char *path, struct stat64 *statbuf);

       For large files, under other systems:
       #include <sys/types.h>
       #include "rfio_api.h"

       int rfio_stat64 (const char *path, struct stat64 *statbuf);
       int rfio_fstat64 (int s, struct stat64 *statbuf);
       int rfio_lstat64 (const char *path, struct stat64 *statbuf);
       int rfio_mstat64 (const char *path, struct stat64 *statbuf);

DESCRIPTION

       rfio_stat gets information about a file or directory.

       rfio_lstat is identical to rfio_stat except for symbolic links. In this case, the link itself is statted and not followed.

       rfio_fstat is identical to rfio_stat but works on the file descriptor s returned by rfio_open.

       rfio_mstat  is  identical  to  rfio_stat but keeps the connection open to the server unless there are more than MAXMCON connections already
       opened. This is useful when issuing a series of stat calls.  The last rfio_mstat call should be followed by a call to rfio_end.

       rfio_mstat_reset is to be used when your program is forking. In such a case the permanent connections opened with rfio_mstat become  shared
       between the parent and the child. Use rfio_mstat_reset to perform the necessary reset and close of the socket file descriptor in the parent
       or the child in order to be sure that only of them will receice an answer from the RFIO daemon.

       See NOTES section below.

       path   specifies the logical pathname relative to the current directory or the full pathname.

       statbuf
	      is a pointer to a stat structure, receiving result of your query.

       The 64 bits functions must be used for large files. They have the same syntax as the normal stat functions except that they  use  a  stat64
       structure.

RETURN VALUE

       This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.

NOTES

       Multiple connections using rfio_mstat are thread-safe but not process-wide, therefore a forked child can share file descriptors opened with
       rfio_mstat by its parent. Use rfio_mstat_reset in such case.

       Multiple connections behaviour is undefined if you work in a multi-threaded environment and  with  threads  not	created  using	the  LCG's
       Cthread interface.

ERRORS

       ENOENT	    The named file/directory does not exist or is a null pathname.

       EBADF	    s is not a valid file descriptor.

       EACCES	    Search permission is denied on a component of the path prefix.

       EFAULT	    path or statbuf is a NULL pointer.

       ENOTDIR	    A component of path prefix is not a directory.

       ENAMETOOLONG The length of path exceeds CA_MAXPATHLEN or the length of a path component exceeds CA_MAXNAMELEN.

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

SEE ALSO

       Castor_limits(4), rfio_chmod(3), rfio_chown(3), Cthread(3)

AUTHOR

       LCG Grid Deployment Team

LCG
							   $Date: 2005/03/31 13:13:03 $ 					      RFIO_STAT(3)