NAME
dpns_chmod - change access mode of a DPNS directory/file in the name
server
SYNOPSIS
#include <sys/types.h>
#include "dpns_api.h"
int dpns_chmod (const char *path, mode_t mode)
DESCRIPTION
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.
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
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.
SEE ALSO
Castor_limits(4), dpns_chdir(3), Cupvlist(1)
AUTHOR
LCG Grid Deployment Team