6f77685609
mainly in the kernel and headers. This split based on work by Ingmar Alting <iaalting@cs.vu.nl> done for his Minix PowerPC architecture port. . kernel does not program the interrupt controller directly, do any other architecture-dependent operations, or contain assembly any more, but uses architecture-dependent functions in arch/$(ARCH)/. . architecture-dependent constants and types defined in arch/$(ARCH)/include. . <ibm/portio.h> moved to <minix/portio.h>, as they have become, for now, architecture-independent functions. . int86, sdevio, readbios, and iopenable are now i386-specific kernel calls and live in arch/i386/do_* now. . i386 arch now supports even less 86 code; e.g. mpx86.s and klib86.s have gone, and 'machine.protected' is gone (and always taken to be 1 in i386). If 86 support is to return, it should be a new architecture. . prototypes for the architecture-dependent functions defined in kernel/arch/$(ARCH)/*.c but used in kernel/ are in kernel/proto.h . /etc/make.conf included in makefiles and shell scripts that need to know the building architecture; it defines ARCH=<arch>, currently only i386. . some basic per-architecture build support outside of the kernel (lib) . in clock.c, only dequeue a process if it was ready . fixes for new include files files deleted: . mpx/klib.s - only for choosing between mpx/klib86 and -386 . klib86.s - only for 86 i386-specific files files moved (or arch-dependent stuff moved) to arch/i386/: . mpx386.s (entry point) . klib386.s . sconst.h . exception.c . protect.c . protect.h . i8269.c
36 lines
870 B
C
36 lines
870 B
C
/* The system call implemented in this file:
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* m_type: SYS_IOPENABLE
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*
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* The parameters for this system call are:
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* m2_i2: IO_ENDPT (process to give I/O Protection Level bits)
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*
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* Author:
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* Jorrit N. Herder <jnherder@cs.vu.nl>
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*/
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#include "../../system.h"
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#include "../../kernel.h"
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#include "proto.h"
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/*===========================================================================*
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* do_iopenable *
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*===========================================================================*/
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PUBLIC int do_iopenable(m_ptr)
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register message *m_ptr; /* pointer to request message */
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{
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int proc_nr;
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#if 1 /* ENABLE_USERPRIV && ENABLE_USERIOPL */
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if (m_ptr->IO_ENDPT == SELF) {
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proc_nr = who_p;
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} else if(!isokendpt(m_ptr->IO_ENDPT, &proc_nr))
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return(EINVAL);
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enable_iop(proc_addr(proc_nr));
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return(OK);
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#else
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return(EPERM);
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#endif
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}
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