SETPROJECT(3PROJECT)SETPROJECT(3PROJECT)NAME
setproject - associate a user process with a project
SYNOPSIS
cc [ flag ... ] file... -lproject [ library ... ]
#include <project.h>
int setproject(const char *project_name, const char *user_name,
uint_t flags);
DESCRIPTION
The setproject() function provides a simplified method for the associa‐
tion of a user process with a project and its various resource manage‐
ment attributes, as stored in the project(4) name service database.
These attributes include resource control settings, resource pool mem‐
bership, and third party attributes (which are ignored by setpro‐
ject().)
If user_name is a valid member of the project specified by
project_name, as determined by inproj(3PROJECT), setproject() will cre‐
ate a new task with settaskid(2) using task flags specified by flags,
use setrctl(2) to associate various resource controls with the process,
task, and project, and bind the calling process to the appropriate
resource pool with pool_set_binding(3POOL). Resource controls not
explicitly specified in the project entry will be preserved. If
user_name is a name of the superuser (user with UID equal to 0), the
setproject() function skips the inproj(3PROJECT) check described above
and allows the superuser to join any project.
The current process will not be bound to a resource pool if the
resource pools facility (see pooladm(1M)) is inactive. The setproject()
function will succeed whether or not the project specified by
project_name specifies a project.pool attribute. If the resource pools
facility is active, setproject() will fail if the project does not
specify a project.pool attribute and there is no designated pool
accepting default assignments. The setproject() function will also fail
if there is a specified project.pool attribute for a nonexistent pool.
RETURN VALUES
Upon successful completion, setproject() returns 0. If any of the
resource control assignments failed but the project assignment, pool
binding, and task creation succeeded, an integer value corresponding to
the offset into the key-value pair list of the failed attribute assign‐
ment is returned. If the project assignment or task creation was not
successful, setproject() returns SETPROJ_ERR_TASK and sets errno to
indicate the error. In the event of a pool binding failure, setpro‐
ject() returns SETPROJ_ERR_POOL and sets errno to indicate the error.
Additional error information can be retrieved from pool_error(3POOL).
ERRORS
The setproject() function will fail during project assignment or task
creation if:
EACCES
The invoking task was created with the TASK_FINAL flag.
EAGAIN
A resource control limiting the number of LWPs or tasks in
the target project or zone has been exceeded.
A resource control on the given project would be exceeded.
EINVAL
The project ID associated with the given project is not
within the range of valid project IDs, invalid flags were
specified, or user_name is NULL.
EPERM
The effective user of the calling process is not superuser.
ESRCH
The specified user is not a valid user of the given project,
user_name is not valid user name, or project_name is not
valid project name.
The setproject() function will fail during pool binding if:
EACCES
No resource pool accepting default bindings exists.
EPERM
The effective user of the calling process is not superuser.
ESRCH
The specified resource pool is unknown
If setproject() returns an offset into the key-value pair list, the
returned error value is associated with setrctl(2) for resource control
attributes.
USAGE
The setproject() function recognizes a name-structured value pair for
the attributes in the project(4) database with the following format:
entity.control=(privilege,value,action,action,...),...
where privilege is one of BASIC or PRIVILEGED, value is a numeric value
with optional units, and action is one of none, deny, and signal=signum
or signal=SIGNAME. For instance, to set a series of progressively more
assertive control values on a project's per-process CPU time, specify
process.max-cpu-time=(PRIVILEGED,1000s,signal=SIGXRES), \
(PRIVILEGED,1250, signal=SIGTERM),(PRIVILEGED,1500,
signal=SIGKILL)
To prevent a task from exceeding a total of 128 LWPs, specify a
resource control with
task.max-lwps=(PRIVILEGED,128,deny)
Specifying a resource control name with no values causes all resource
control values for that name to be cleared on the given project, leav‐
ing only the system resource control value on the specified resource
control name.
For example, to remove all resource control values on shared memory,
specify:
project.max-shm-memory
The project attribute, project.pool, specifies the pool to which pro‐
cesses associated with the project entry should be bound. Its format
is:
project.pool=pool_name
where pool_name is a valid resource pool within the active configura‐
tion enabled with pooladm(1M).
The final attribute is used to finalize the task created by setpro‐
ject(). Seesettaskid(2).
task.final
All further attempts to create new tasks, such as using newtask(1) and
su(1M), will fail.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Interface Stability │ Evolving │
├────────────────────┼─────────────────┤
│MT-Level │ MT-Safe │
└────────────────────┴─────────────────┘
SEE ALSOpooladm(1M), setrctl(2), settaskid(2), inproj(3PROJECT), libpro‐
ject(3LIB), pool_error(3POOL), pool_set_binding(3POOL), passwd(4),
project(4), attributes(5)
Apr 10, 2007 SETPROJECT(3PROJECT)