e43379f10b
Add a pair of rlimits for allowing non-root tasks to raise nice and rt priorities. Defaults to traditional behavior. Originally written by Chris Wright. The patch implements a simple rlimit ceiling for the RT (and nice) priorities a task can set. The rlimit defaults to 0, meaning no change in behavior by default. A value of 50 means RT priority levels 1-50 are allowed. A value of 100 means all 99 privilege levels from 1 to 99 are allowed. CAP_SYS_NICE is blanket permission. (akpm: see http://www.uwsg.iu.edu/hypermail/linux/kernel/0503.1/1921.html for tips on integrating this with PAM). Signed-off-by: Matt Mackall <mpm@selenic.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
#ifndef _ASM_GENERIC_RESOURCE_H
|
|
#define _ASM_GENERIC_RESOURCE_H
|
|
|
|
/*
|
|
* Resource limit IDs
|
|
*
|
|
* ( Compatibility detail: there are architectures that have
|
|
* a different rlimit ID order in the 5-9 range and want
|
|
* to keep that order for binary compatibility. The reasons
|
|
* are historic and all new rlimits are identical across all
|
|
* arches. If an arch has such special order for some rlimits
|
|
* then it defines them prior including asm-generic/resource.h. )
|
|
*/
|
|
|
|
#define RLIMIT_CPU 0 /* CPU time in ms */
|
|
#define RLIMIT_FSIZE 1 /* Maximum filesize */
|
|
#define RLIMIT_DATA 2 /* max data size */
|
|
#define RLIMIT_STACK 3 /* max stack size */
|
|
#define RLIMIT_CORE 4 /* max core file size */
|
|
|
|
#ifndef RLIMIT_RSS
|
|
# define RLIMIT_RSS 5 /* max resident set size */
|
|
#endif
|
|
|
|
#ifndef RLIMIT_NPROC
|
|
# define RLIMIT_NPROC 6 /* max number of processes */
|
|
#endif
|
|
|
|
#ifndef RLIMIT_NOFILE
|
|
# define RLIMIT_NOFILE 7 /* max number of open files */
|
|
#endif
|
|
|
|
#ifndef RLIMIT_MEMLOCK
|
|
# define RLIMIT_MEMLOCK 8 /* max locked-in-memory address space */
|
|
#endif
|
|
|
|
#ifndef RLIMIT_AS
|
|
# define RLIMIT_AS 9 /* address space limit */
|
|
#endif
|
|
|
|
#define RLIMIT_LOCKS 10 /* maximum file locks held */
|
|
#define RLIMIT_SIGPENDING 11 /* max number of pending signals */
|
|
#define RLIMIT_MSGQUEUE 12 /* maximum bytes in POSIX mqueues */
|
|
#define RLIMIT_NICE 13 /* max nice prio allowed to raise to
|
|
0-39 for nice level 19 .. -20 */
|
|
#define RLIMIT_RTPRIO 14 /* maximum realtime priority */
|
|
|
|
#define RLIM_NLIMITS 15
|
|
|
|
/*
|
|
* SuS says limits have to be unsigned.
|
|
* Which makes a ton more sense anyway.
|
|
*
|
|
* Some architectures override this (for compatibility reasons):
|
|
*/
|
|
#ifndef RLIM_INFINITY
|
|
# define RLIM_INFINITY (~0UL)
|
|
#endif
|
|
|
|
/*
|
|
* RLIMIT_STACK default maximum - some architectures override it:
|
|
*/
|
|
#ifndef _STK_LIM_MAX
|
|
# define _STK_LIM_MAX RLIM_INFINITY
|
|
#endif
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* boot-time rlimit defaults for the init task:
|
|
*/
|
|
#define INIT_RLIMITS \
|
|
{ \
|
|
[RLIMIT_CPU] = { RLIM_INFINITY, RLIM_INFINITY }, \
|
|
[RLIMIT_FSIZE] = { RLIM_INFINITY, RLIM_INFINITY }, \
|
|
[RLIMIT_DATA] = { RLIM_INFINITY, RLIM_INFINITY }, \
|
|
[RLIMIT_STACK] = { _STK_LIM, _STK_LIM_MAX }, \
|
|
[RLIMIT_CORE] = { 0, RLIM_INFINITY }, \
|
|
[RLIMIT_RSS] = { RLIM_INFINITY, RLIM_INFINITY }, \
|
|
[RLIMIT_NPROC] = { 0, 0 }, \
|
|
[RLIMIT_NOFILE] = { INR_OPEN, INR_OPEN }, \
|
|
[RLIMIT_MEMLOCK] = { MLOCK_LIMIT, MLOCK_LIMIT }, \
|
|
[RLIMIT_AS] = { RLIM_INFINITY, RLIM_INFINITY }, \
|
|
[RLIMIT_LOCKS] = { RLIM_INFINITY, RLIM_INFINITY }, \
|
|
[RLIMIT_SIGPENDING] = { 0, 0 }, \
|
|
[RLIMIT_MSGQUEUE] = { MQ_BYTES_MAX, MQ_BYTES_MAX }, \
|
|
[RLIMIT_NICE] = { 0, 0 }, \
|
|
[RLIMIT_RTPRIO] = { 0, 0 }, \
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif
|