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mac_set_link (3)

>> mac_set_link (3) ( FreeBSD man: Библиотечные вызовы )

BSD mandoc

NAME



mac_set_file

 
mac_set_fd

 
mac_set_proc

 - set the MAC label for a file or process

LIBRARY

Lb libc

SYNOPSIS

#include <sys/mac.h>
int mac_set_file (const char *path mac_t label);
int mac_set_link (const char *path mac_t label);
int mac_set_fd (int fd mac_t label);
int mac_set_proc (mac_t label);

DESCRIPTION

The mac_set_file ();
and mac_set_fd ();
functions associate a MAC label specified by Fa label to the file referenced to by Fa path_p , or to the file descriptor Fa fd , respectively. Note that when a file descriptor references a socket, label operations on the file descriptor act on the socket, not on the file that may have been used as a rendezvous when binding the socket. The mac_set_link ();
function is the same as mac_set_file (,);
except that it does not follow symlinks.

The mac_set_proc ();
function associates the MAC label specified by Fa label to the calling process.

A process is allowed to set a label for a file only if it has MAC write access to the file, and its effective user ID is equal to the owner of the file, or has appropriate privileges.

RETURN VALUES

Rv -std mac_set_fd mac_set_file mac_set_link mac_set_proc

ERRORS

Bq Er EACCES: MAC write access to the file is denied.
Bq Er EBADF: The Fa fd argument is not a valid file descriptor.
Bq Er EINVAL: The Fa label argument is not a valid MAC label, or the object referenced by Fa fd is not appropriate for label operations.
Bq Er EOPNOTSUPP: Setting MAC labels is not supported by the file referenced by Fa fd .
Bq Er EPERM: The calling process had insufficient privilege to change the MAC label.
Bq Er EROFS: File system for the object being modified is read only.
Bq Er ENAMETOOLONG: The length of the pathname in Fa path_p exceeds PATH_MAX or a component of the pathname is longer than NAME_MAX
Bq Er ENOENT: The file referenced by Fa path_p does not exist.
Bq Er ENOTDIR: A component of the pathname referenced by Fa path_p is not a directory.