dpns_chmod (3)

#include <sys/types.h>

#include "dpns_api.h"

int dpns_chmod (const char *path, mode_t mode)

dpns_chmod sets the access permission portion of the mode of a DPNS directory/file in the name server to the bit pattern in mode.

path

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

mode

is constructed by OR'ing the bits defined in <sys/stat.h> under Unix or "statbits.h" under Windows/NT:

S_ISUID 0004000 set user ID on execution

S_ISGID 0002000 set group ID on execution

S_ISVTX 0001000 sticky bit

S_IRUSR 0000400 read by owner

S_IWUSR 0000200 write by owner

S_IXUSR 0000100 execute/search by owner

S_IRGRP 0000040 read by group

S_IWGRP 0000020 write by group

S_IXGRP 0000010 execute/search by group

S_IROTH 0000004 read by others

S_IWOTH 0000002 write by others

S_IXOTH 0000001 execute/search by others

The effective user ID of the process must match the owner of the file or the caller must have ADMIN privilege in the Cupv database. If a directory is writable and has the sticky bit set, files/directories within that directory can be removed or renamed only if:

the effective user ID of the requestor matches the owner ID of the file or

the effective user ID of the requestor matches the owner ID of the directory or

the file is writable by the requestor or

the requestor has ADMIN privilege in the Cupv database.

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

EPERM

The effective user ID does not match the owner of the file and the caller does not have ADMIN privilege in the Cupv database.

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.

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.

ENSNACT

Name server is not running or is being shutdown.

Castor_limits(4), dpns_chdir(3), Cupvlist(1)

LCG Grid Deployment Team