Create a process-manager ability
Synopsis:
#include <sys/procmgr.h>
int procmgr_ability_create( const char *name,
unsigned flags );
Arguments:
- name
- The name of the ability.
This should by convention consist of a service identifier followed by a capability identifier (e.g.,
"fs-qnx6/some_devctl").
- flags
- Flags that apply to the new ability; a bitwise OR of zero or more of the following:
- PROCMGR_ADN_ROOT — the ability applies to processes that have an
effective user ID of 0.
- PROCMGR_ADN_NONROOT — the ability applies to processes that have an
effective user ID other than 0.
Library:
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
Description:
The procmgr_ability_create() function creates a process-manager ability.
A server can use this function to create the ability, and clients can use
procmgr_ability_lookup()
to look it up.
The name argument is a string that uniquely identifies the ability, and the
flags specify which privilege domains have the ability by default.
Note:
- In order to create an ability, your process must have the
PROCMGR_AID_ABLE_CREATE ability enabled.
For more information, see
procmgr_ability().
- You can only set the privilege domains for a new ability once; additional calls to
procmgr_ability_create() for the same ability will fail unless the flags are the
same as before.
- There's no requirement for a call to procmgr_ability_create() to precede calls to
procmgr_ability_lookup().
This avoids forcing any specific ordering of process initialization.
Returns:
A numeric ability identifier, which can then be used in a call to procmgr_ability() or to
verify the abilities of a client, or a negative
errno
value if an error occurred.
Classification:
QNX Neutrino
| Safety: |
|
|---|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
Yes |
| Thread |
Yes |