Scroll to navigation

DPNS_ACCESS(3) DPNS Library Functions DPNS_ACCESS(3)


dpns_access - check existence/accessibility of a file/directory


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

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


dpns_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.

specifies the logical pathname relative to the current DPNS directory or the full DPNS pathname.
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 directory/file.


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


The named file/directory does not exist or is a dangling symbolic link.
Search permission is denied on a component of the path prefix or specified access to the file itself is denied.
path is a NULL pointer.
A component of path prefix is not a directory.
amode is invalid.
The length of path exceeds CA_MAXPATHLEN or the length of a path component exceeds CA_MAXNAMELEN.
Host unknown.
Service unknown.
Communication error.
Name server is not running or is being shutdown.


Castor_limits(4), dpns_chdir(3), dpns_chmod(3), dpns_stat(3), dpns_statg(3)


LCG Grid Deployment Team

$Date$ DPNS