Store extended information about a client connection, including abilities
Synopsis:
#include <sys/neutrino.h>
struct _client_able {
unsigned ability;
unsigned flags;
uint64_t range_lo;
uint64_t range_hi;
};
int ConnectClientInfoAble( int scoid,
struct _client_info **info_pp,
const int flags,
struct _client_able abilities[],
const int nable );
Arguments:
-
scoid
- A server connection ID that identifies the client process that you want to get information
about. This client is typically a process that's made a connection to the
server to try to access a resource. You can get it from the
_msg_info
argument to
MsgReceivev()
or
MsgInfo()
.
-
info
- The address of a location where the function can store a pointer to a
_client_info structure that the function can fill with
information about the client. For more information, see
ConnectClientInfoExt()
.
-
flags
- Zero or more of the following:
-
_NTO_CLIENTINFO_GETGROUPS — get the supplementary group IDs
-
able
- An array of
struct
_client_able
structures that specifies the abilities
that the client must have; see below.
-
nable
- The number of entries in the able array.
Library:
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
Description:
This call gets information about a client connection identified by scoid,
allocates a buffer, stores the information in the buffer, and stores a pointer to
the buffer in the location that info points to. Use
ClientInfoExtFree()
to free this buffer.
A server uses this function to determine whether or not a client has the required abilities;
see
procmgr_ability()
and
procmgr_ability_create()
.
The ConnectClientInfoAble() function is a specialized version of
ConnectClientInfo()
.
_client_able structure
The _client_able structure has at least the following members:
-
ability
- The numeric identifier for the ability; either a PROCMGR_AID_* value (see
procmgr_ability()
), or an ability that
the server created by calling
procmgr_ability_create()
.
-
flags
- Flags that specify the domain of the ability; a bitwise OR of zero or more of the following:
-
PROCMGR_ADN_ROOT — the ability is for privileged processes.
-
PROCMGR_ADN_NONROOT — the ability is for unprivileged
processes.
-
range_lo
- The lower limit on the range of the ability.
-
range_hi
- The upper limit on the range of the ability.
Returns:
0, or -1 if an error occurred (
errno
is set).
Errors:
-
EFAULT
- A fault occurred when the kernel tried to access the buffers provided.
-
EINVAL
- The process doesn't have a connection scoid.
Classification:
QNX
Neutrino
| Safety: |
|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
Yes |
| Thread |
Yes |