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