NAME

       lfc_access - check existence/accessibility of a file/directory

SYNOPSIS

       Under Unix:
       #include <sys/types.h>
       #include <unistd.h>
       #include "lfc_api.h"

       Under Windows/NT:
       #include <sys/types.h>
       #define R_OK 4
       #define W_OK 2
       #define X_OK 1
       #define F_OK 0
       #include "lfc_api.h"

       int lfc_access (const char *path, int amode);

DESCRIPTION

       lfc_access  checks  in  the name server database the existence or the accessibility of the file/directory
       path according to the bit pattern in amode using the real user ID.

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

       amode  the bit pattern is built by an OR of the constants defined in  <unistd.h>  under  Unix  or  to  be
              explicitly defined under Windows/NT:

              R_OK   test for read permission

              W_OK   test for write permission

              X_OK   test for search/execute permission

              F_OK   test for existence of the directory/file.

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.

ERRORS

       ENOENT       The named file/directory does not exist or is a dangling symbolic link.

       EACCES       Search permission is denied on a component of the path prefix or  specified  access  to  the
                    file itself is denied.

       EFAULT       path is a NULL pointer.

       ENOTDIR      A component of path prefix is not a directory.

       EINVAL       amode is invalid.

       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.

       ENSNACT      Name server is not running or is being shutdown.

SEE ALSO

       Castor_limits(4), lfc_chdir(3), lfc_chmod(3), lfc_statg(3)

AUTHOR

       LCG Grid Deployment Team