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OpenDarwin 7.2.1 - man page for mprotect (opendarwin section 2)

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MPROTECT(2)			     BSD System Calls Manual			      MPROTECT(2)

NAME
     mprotect -- control the protection of pages

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

     int
     mprotect(caddr_t 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 region.

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.

BSD					   June 9, 1993 				      BSD
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