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vm_map_protect (9)
  • >> vm_map_protect (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    NAME

    
    
    vm_map_protect
    
     - apply protection bits to a virtual memory region
    
     
    

    SYNOPSIS

       #include <sys/param.h>
       #include <vm/vm.h>
       #include <vm/vm_map.h>
    int Fo vm_map_protect Fa vm_map_t map vm_offset_t start vm_offset_t end vm_prot_t new_prot Fa boolean_t set_max Fc  

    DESCRIPTION

    The vm_map_protect ();
    function sets the protection bits of the address region bounded by Fa start and Fa end within the map Fa map to Fa new_prot .

    If Fa set_max is TRUE, Fa new_prot is treated as the new max_protection setting for each underlying entry. Otherwise, only the protection field is affected.

    The range MUST be contiguous, and MUST NOT contain sub-maps.  

    IMPLEMENTATION NOTES

    The function acquires a lock on the Fa map for the duration, by calling vm_map_lock9.  

    RETURN VALUES

    The vm_map_protect ();
    function returns KERN_SUCCESS if the protection bits could be set successfully.

    If a sub-map entry was encountered in the range, KERN_INVALID_ARGUMENT is returned. If the value of Fa new_prot would exceed max_protection for an entry within the range, KERN_PROTECTION_FAILURE is returned.  

    SEE ALSO

    vm_map9  

    AUTHORS

    This manual page was written by An Bruce M Simpson Aq [email protected] .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    IMPLEMENTATION NOTES
    RETURN VALUES
    SEE ALSO
    AUTHORS


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