122 lines
2.6 KiB
Groff
122 lines
2.6 KiB
Groff
.\" $Id: kafs.3,v 1.1 1997/05/07 21:49:02 joda Exp $
|
|
.\"
|
|
.Dd May 7, 1997
|
|
.Os KTH-KRB
|
|
.Dt KAFS 3
|
|
.Sh NAME
|
|
.Nm k_hasafs ,
|
|
.Nm k_afsklog ,
|
|
.Nm k_afsklog_uid ,
|
|
.Nm k_pioctl ,
|
|
.Nm k_unlog ,
|
|
.Nm k_setpag ,
|
|
.Nm k_afs_cell_of_file
|
|
.Nd AFS library
|
|
.Sh SYNOPSIS
|
|
.Fd #include <kafs.h>
|
|
.Ft int
|
|
.Fn k_afsklog "char *cell" "char *realm"
|
|
.Ft int
|
|
.Fn k_afsklog_uid "char *cell" "char *realm" "uid_t uid"
|
|
.Ft int
|
|
.Fn k_afs_cell_of_file "const char *path" "char *cell" "int len"
|
|
.Ft int
|
|
.Fn k_hasafs
|
|
.Ft int
|
|
.Fn k_pioctl "char *a_path" "int o_opcode" "struct ViceIoctl *a_paramsP" "int a_followSymlinks"
|
|
.Ft int
|
|
.Fn k_setpag
|
|
.Ft int
|
|
.Fn k_unlog
|
|
.Sh DESCRIPTION
|
|
.Fn k_hasafs
|
|
initializes some library internal structures, and tests for the
|
|
presense of AFS in the kernel, none of the other functions should be
|
|
called before
|
|
.Fn k_hasafs
|
|
is called, or if it fails.
|
|
|
|
.Fn k_afsklog ,
|
|
and
|
|
.Fn k_afsklog_uid
|
|
obtains new tokens (and possibly tickets) for the specified
|
|
.Fa cell
|
|
and
|
|
.Fa realm .
|
|
If
|
|
.Fa cell
|
|
is
|
|
.Dv NULL ,
|
|
the local cell is used. If
|
|
.Fa realm
|
|
is
|
|
.Dv NULL ,
|
|
the function tries to guess what realm to use. Unless you have some good knowledge of what cell or realm to use, you should pass
|
|
.Dv NULL .
|
|
.Fn k_afsklog
|
|
will use the real user-id for the
|
|
.Dv ViceId
|
|
field in the token,
|
|
.Fn k_afsklog_uid
|
|
will use
|
|
.Fa uid .
|
|
|
|
.Fn k_afs_cell_of_file
|
|
will in
|
|
.Fa cell
|
|
return the cell of a specified file, no more than
|
|
.Fa len
|
|
characters is put in
|
|
.Fa cell .
|
|
|
|
.Fn k_pioctl
|
|
does a
|
|
.Fn pioctl
|
|
syscall with the specified arguments. This function is equivalent to
|
|
.Fn lpioctl .
|
|
|
|
.Fn k_setpag
|
|
initializes a new PAG.
|
|
|
|
.Fn k_unlog
|
|
removes destroys all tokens in the current PAG.
|
|
|
|
.Sh RETURN VALUES
|
|
.Fn k_hasafs
|
|
returns 1 if AFS is present in the kernel, 0 otherwise.
|
|
.Fn k_afsklog
|
|
and
|
|
.Fn k_afsklog_uid
|
|
returns 0 on success, or a kerberos error number on failure.
|
|
.Fn k_afs_cell_of_file ,
|
|
.Fn k_pioctl ,
|
|
.Fn k_setpag ,
|
|
and
|
|
.Fn k_unlog
|
|
all return the value of the underlaying system call, 0 on success.
|
|
.Sh EXAMPLES
|
|
The following code from
|
|
.Nm login
|
|
will obtain a new PAG and tokens for the local cell and the cell of
|
|
the users home directory.
|
|
.Bd -literal
|
|
if (k_hasafs()) {
|
|
char cell[64];
|
|
k_setpag();
|
|
if(k_afs_cell_of_file(pwd->pw_dir, cell, sizeof(cell)) == 0)
|
|
k_afsklog(cell, 0);
|
|
k_afsklog(0, 0);
|
|
}
|
|
.Ed
|
|
.Sh ERRORS
|
|
If any of these functions (appart from
|
|
.Fn k_hasafs )
|
|
is called without AFS beeing present in the kernel, the process will
|
|
usually (depending on the operating system) receive a SIGSYS signal.
|
|
.Sh SEE ALSO
|
|
.Rs
|
|
.%A Transarc Corporation
|
|
.%J AFS-3 Programmer's Reference
|
|
.%T File Server/Cache Manager Interface
|
|
.%D 1991
|
|
.Re |