Scroll to navigation

LFC_ACCESSR(3) LFC Library Functions LFC_ACCESSR(3)

NAME

lfc_accessr - check existence/accessibility of a file replica

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_accessr (const char *sfn, int amode);

DESCRIPTION

lfc_accessr checks in the name server database the existence or the accessibility of the file replica sfn according to the bit pattern in amode using the real user ID.

is either the Site URL or the Physical File Name for the replica.
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:
test for read permission
test for write permission
test for search/execute permission
test for existence of the 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

The named file does not exist.
Search permission is denied on a component of the parent file prefix, the specified access to the file itself is denied or W_OK is requested but the replica status is not 'P' (cannot modify an existing file).
sfn is a NULL pointer.
amode is invalid.
The length of sfn exceeds CA_MAXSFNLEN.
Host unknown.
Service unknown.
Communication error.
Name server is not running or is being shutdown.

SEE ALSO

Castor_limits(4), lfc_chmod(3), lfc_statr(3)

AUTHOR

LCG Grid Deployment Team

$Date$ LFC