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mprotect.2 (13836) mprotect.2 (14326)
1.\" Copyright (c) 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

--- 26 unchanged lines hidden (view full) ---

35.Dt MPROTECT 2
36.Os
37.Sh NAME
38.Nm mprotect
39.Nd control the protection of pages
40.Sh SYNOPSIS
41.Fd #include <sys/types.h>
42.Fd #include <sys/mman.h>
1.\" Copyright (c) 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

--- 26 unchanged lines hidden (view full) ---

35.Dt MPROTECT 2
36.Os
37.Sh NAME
38.Nm mprotect
39.Nd control the protection of pages
40.Sh SYNOPSIS
41.Fd #include <sys/types.h>
42.Fd #include <sys/mman.h>
43.Fn mprotect "caddr_t addr" "int len" "int prot"
43.Fn mprotect "caddr_t addr" "size_t len" "int prot"
44.Sh DESCRIPTION
45The
46.Fn mprotect
47system call
48changes the specified pages to have protection
49.Fa prot .
50Not all implementations will guarantee protection on a page basis;
51the granularity of protection changes may be as large as an entire region.
52.Sh SEE ALSO
53.Xr msync 2 ,
54.Xr munmap 2 ,
55.Xr madvise 2 ,
56.Xr mincore 2
57.Sh HISTORY
58The
59.Fn mprotect
60function first appeared in 4.4BSD.
44.Sh DESCRIPTION
45The
46.Fn mprotect
47system call
48changes the specified pages to have protection
49.Fa prot .
50Not all implementations will guarantee protection on a page basis;
51the granularity of protection changes may be as large as an entire region.
52.Sh SEE ALSO
53.Xr msync 2 ,
54.Xr munmap 2 ,
55.Xr madvise 2 ,
56.Xr mincore 2
57.Sh HISTORY
58The
59.Fn mprotect
60function first appeared in 4.4BSD.