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⟦ad96727e2⟧ Wang Wps File
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Notes: Spelunked
Names: »~ORPHAN02.10«
Derivation
└─⟦c2ca659c9⟧ Bits:30006002 8" Wang WCS floppy, CR 0037A
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WangText
r figure 5.6.1.1.4-1 (13).
5.6.1.3 K̲E̲R̲N̲E̲L̲ ̲C̲o̲n̲t̲r̲o̲l̲
5.6.1.3.1 P̲a̲r̲a̲m̲e̲t̲e̲r̲ ̲C̲o̲n̲t̲r̲o̲l̲
There are three main groups of parameters which control KERNEL operation:
- Claims.
- Security profiles and access rights.
- Error Handling Parameters (see 5..1.3.3).
a) C̲l̲a̲i̲m̲s̲
Directory functions contains an accounting function, keeping track of the use of
system resources by processes. Each process has a socalled c̲l̲a̲i̲m̲ on each resource
type. The claim is the maximum number of objects of that typewhich may be allocated
by the process. At child creation time the parent may give its child part of its
own claims, thereby reducing its claim with the amount offered. The total amount
of each resource type is defined at system generation time.
) S̲e̲c̲u̲r̲i̲t̲y̲ ̲P̲r̲o̲f̲i̲l̲e̲s̲ ̲a̲n̲d̲ ̲A̲c̲c̲e̲s̲s̲ ̲R̲i̲g̲h̲t̲s̲
All objects, including processes have an associated security profile, set at object
creation time. Whenever a process attempts access to an object, it is checked if
the access is consistent with security ruls as stated in 5.6.1.2.2.
Other parameters such as security level for purging of memory segments and inhibiting
of transfer to backing storage are defined at system generation time.
5.6.1.3.2 I̲n̲i̲t̲i̲a̲l̲i̲z̲a̲t̲i̲o̲n̲
The KERNEL data structures are initialized as part
of boot load procedure.
5.6.1.3.3 E̲r̲r̲o̲r̲ ̲H̲a̲n̲d̲l̲i̲n̲g̲
KERNEL detects the following classes of errors:
