SETTASKID(2) System Calls SETTASKID(2)


NAME


settaskid, gettaskid, getprojid - set or get task or project IDs

SYNOPSIS


#include <sys/types.h>
#include <sys/task.h>
#include <unistd.h>

taskid_t settaskid(projid_t project, int flags);


taskid_t gettaskid(void);


#include <sys/types.h>
#include <sys/task.h>
#include <unistd.h>
#include <project.h>

projid_t getprojid(void);


DESCRIPTION


The settaskid() function makes a request of the system to assign a new
task ID to the calling process, changing the associated project ID to
that specified. The calling process must have sufficient privileges to
perform this operation. The flags argument should be either TASK_NORMAL
for a regular task, or TASK_FINAL, which disallows subsequent settaskid()
calls by the created task.


The gettaskid() function returns the task ID of the calling process.


The getprojid() function returns the project ID of the calling process.

RETURN VALUES


Upon successful completion, these functions return the appropriate task
or project ID. Otherwise, -1 is returned and errno is set to indicate the
error.

ERRORS


The settaskid() function will fail if:

EACCES
The invoking task was created with the TASK_FINAL flag.


EAGAIN
A resource control limiting the number of tasks or LWPs in the
current project or zone has been exceeded.

A resource control on the given project would be exceeded.


EINVAL
The given project ID is not within the valid project ID range.


EPERM
The {PRIV_PROC_TASKID} privilege is not asserted in the
effective set of the calling process.


ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+---------------+-------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-------------------+
|MT-Level | Async-Signal-Safe |
+---------------+-------------------+

SEE ALSO


setsid(2), project(4), attributes(5), privileges(5)


April 10, 2007 SETTASKID(2)