49b9165251
. test74 for mmap functionality . vm: add a mem_file memory type that specifies an mmap()ped memory range, backed by a file . add fdref, an object that keeps track of FD references within VM per process and so knows how to de-duplicate the use of FD's by various mmap()ped ranges; there can be many more than there can be FD's . turned off for now, enable with 'filemap=1' as boot option Change-Id: I640b1126cdaa522a0560301cf6732b7661555672
44 lines
940 B
C
44 lines
940 B
C
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#include <minix/sys_config.h>
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#include <minix/type.h>
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#include <minix/param.h>
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#include <sys/stat.h>
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#include <a.out.h>
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#include "vm.h"
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#include "vmproc.h"
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#if _MAIN
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#undef EXTERN
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#define EXTERN
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#endif
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#define VMP_EXECTMP _NR_PROCS
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#define VMP_NR _NR_PROCS+1
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EXTERN struct vmproc vmproc[VMP_NR];
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long enable_filemap;
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EXTERN kinfo_t kernel_boot_info;
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#if SANITYCHECKS
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EXTERN int nocheck;
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EXTERN int incheck;
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EXTERN int sc_lastline;
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EXTERN char *sc_lastfile;
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#endif
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extern struct minix_kerninfo *_minix_kerninfo;
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/* mem types */
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EXTERN mem_type_t mem_type_anon, /* anonymous memory */
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mem_type_directphys, /* direct physical mapping memory */
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mem_type_anon_contig, /* physically contig anon memory */
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mem_type_cache, /* disk cache */
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mem_type_mappedfile, /* memory with file contents */
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mem_type_shared; /* memory shared by multiple processes */
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/* total number of memory pages */
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EXTERN int total_pages;
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