VM_MAP_INHERIT(9) BSD Kernel Developer's Manual VM_MAP_INHERIT(9)NAME
vm_map_inherit -- set fork inheritance flags for a range within a map
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>
int
vm_map_inherit(vm_map_t map, vm_offset_t start, vm_offset_t end, vm_inherit_t new_inheritance);
DESCRIPTION
The vm_map_inherit() function sets the inheritance flags for the range start to end within the target map to the value new_inheritance.
The new_inheritance flag must have one of the values VM_INHERIT_NONE, VM_INHERIT_COPY, or VM_INHERIT_SHARE. This affects how the map will be
shared with child maps when the associated process forks.
IMPLEMENTATION NOTES
The vm_map_inherit() function obtains a lock on the map using vm_map_lock(9) for the duration of the function.
RETURN VALUES
The vm_map_inherit() function returns KERN_SUCCESS if the inheritance flags could be set. Otherwise, if the provided flags were invalid,
KERN_INVALID_ARGUMENT will be returned.
SEE ALSO fork(2)AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.
BSD July 19, 2003 BSD
Check Out this Related Man Page
VM_MAP_PROTECT(9) BSD Kernel Developer's Manual VM_MAP_PROTECT(9)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
vm_map_protect(vm_map_t map, vm_offset_t start, vm_offset_t end, vm_prot_t new_prot, boolean_t set_max);
DESCRIPTION
The vm_map_protect() function sets the protection bits of the address region bounded by start and end within the map map to new_prot.
If set_max is TRUE, 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 map for the duration, by calling vm_map_lock(9).
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 new_prot would exceed max_protection for
an entry within the range, KERN_PROTECTION_FAILURE is returned.
SEE ALSO vm_map(9)AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.
BSD July 19, 2003 BSD
I have a huge matrix file containing some 1.5 million rows and 6000 columns. The matrix looks something like this:
1 2 3
4 5 6
7 8 9
3 4 5
I want to add all the numbers in the columns of this matrix and display the result to my stdout. This means that the numbers in the first column are:
... (2 Replies)
Hi,
Just trying to get to grips with sed and awk for some reporting for work and I need some assistance:
I have a file that lists policy names on the first line and then on the second line whether the policy is active or not.
Policy Name: Policy1
Active: yes
Policy... (8 Replies)
version info :
vi availabe with RHEL 5.4
I have a text file with 10,000 lines. I want to copy lines from 5000th line to 7000th and redirect to a file. Any idea how I can do this?
Note:
The above scenario is just an example. In my actual requirement, the file has 14 million lines and I want... (9 Replies)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
Hello,
I couldn't find an actual introduction thread, so I decided to just put this here.
I go by d0wngrade online. I have been programming in multiple languages for about 15+ years. I started with standard web design languages like HTML and CSS, but I then advanced from design to development... (2 Replies)
Hi guys...
The first active code line in AudioScope.sh is set -u .
This causes a complete exit if a variable is used/found but has not been allocated at the start of the program.
However, apart from writing code to do the task, is there a switch to to check which variables have been... (17 Replies)
Hi.
In thread https://www.unix.com/shell-programming-and-scripting/267833-grouping-counting.html rovf and I had a mini-discussion on grep and awk.
Here is a demo script that compares the awk and grep approaches for this single problem:
#!/usr/bin/env bash
# @(#) s2 Demonstrate group... (1 Reply)
Hello,
I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need,
# file with header names of required columns in required order
headers_file=$2
# read contents... (11 Replies)
For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this:
If you don't have gcc on your system:
0. Download and install the Command Line Tools for Xcode package from Sign In - Apple *
1. Download the dash... (2 Replies)
Hello and thanks in advance for any help anyone can offer me
I'm trying to learn the find command and thought I was understanding it... Apparently I was wrong. I was doing compound searches and I started getting weird results with the -size test. I was trying to do a search on a 1G file owned by... (14 Replies)
I have data of an excel files as given below,
file1
org1_1 1 1 2.5 100
org1_2 1 2 5.5 98
org1_3 1 3 7.2 88
file2
org2_1 1 1 2.5 100
org2_2 1 2 5.5 56
org2_3 1 3 7.2 70
I have multiple excel files as above shown.
I have to copy column 1, column 4 and paste into a new excel file as... (26 Replies)
Dear All,
Taking a break from Vue.js coding for the site, SEO and YT videos; and hopefully addressing some well deserved criticism from some here that I have been too focused on the visual aspects of the forums versus the substance and the community....
While the "current generation... (9 Replies)
Hi all...
Well guys and gals, I jumped in at the deep end and found things that PERL cannot do by default.
Many tricky terminal escape codes are not catered for so I had to create workarounds.
One thing I searched for was this:
Passing perl variable to shell command
AND, @Neo this was... (15 Replies)