mprotect man page on MirBSD

mprotect man page on MirBSD

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MPROTECT(2)		   BSD Programmer's Manual		   MPROTECT(2)

NAME
     mprotect - control the protection of pages

SYNOPSIS
     #include <sys/types.h>
     #include <sys/mman.h>

     int
     mprotect(void *addr, size_t len, int prot);

DESCRIPTION
     The mprotect() system call changes the specified pages to have protection
     prot. Not all implementations will guarantee protection on a page basis;
     the granularity of protection changes may be as large as an entire re-
     gion.

     The protections (region accessibility) are specified in the prot argument
     by OR'ing the following values:

     PROT_EXEC	 Pages may be executed.

     PROT_READ	 Pages may be read.

     PROT_WRITE	 Pages may be written.

     PROT_NONE	 No permissions.

RETURN VALUES
     Upon successful completion, a value of 0 is returned. Otherwise, a value
     of -1 is returned and errno is set to indicate the error.

SEE ALSO
     madvise(2), mincore(2), msync(2), munmap(2)

HISTORY
     The mprotect() function first appeared in 4.4BSD.

MirOS BSD #10-current		 June 9, 1993				     1

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