*

SCR1.1/Meetgenda.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+Dernier_Repertoire=$pwd
+cd ~/public_html/Meetgenda && git pull && cd $Dernier_Repertoire

SCR1.1/find_bigger_files.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# A simple program to find
+# in the active directory
+# the bigger files.
+
+if [[$# -ne 1]]
+then
+	echo "Usage : ./$0 <FOLDER_NAME>"
+	exit
+fi
+
+ls -l $1 > $($1_files.txt)
+bigger_file=0
+for ligne in $(<$1_files.txt)
+do
+	echo "$ligne"
+done
+
+exit	
+

SCR2.1/ngwalang-number-weight.s

@@ -0,0 +1,22 @@
+.equ SYS_EXIT ,93
+.data
+	int: .word -1
+.text
+.globl _start
+_start:
+      adr x4, int
+      ldr w3, [x4]
+      sxtw x2, w3
+      mov x0, #0
+loop: cbz x2, exit
+      tbz x2, #0, next
+      add x0, x0, x1
+next: lsr x2, x2, #1
+      mov x1, 1
+      b loop
+exit: mov x0, #0
+      mov w8,#SYS_EXIT
+      svc #0x0
+.end
+
+

SCR2.1/number-xeight.s

@@ -0,0 +1,21 @@
+.equ SYS_EXIT, 93
+.data
+int : .word 12
+.text 
+.globl _start
+_start : adr x1, int
+	 ldr w0,[x1] //n est dans w0
+	 mov w1, #0  //res est dans w1
+	 mov w2, #1  //i est dans w2
+bcl: 	 cmp w2, w0
+	 b.gt fin
+	 add w1,w1,w2
+	 add w2,w2,#1
+	 b bcl
+fin:     mov x0,x1
+	 mov w8, #SYS_EXIT
+	 svc #0
+	 .end
+	 
+	
+

SCR2.2/TP22/DOC/README.Debian

@@ -0,0 +1,178 @@
+DNSSEC validation turned on by default as of BIND 9.8.1
+-------------------------------------------------------
+As of version 9.8.1.dfsg-1, BIND ships with DNSSEC validation turned on
+by default.  As the keys get changed over time, this means that a fresh
+install of BIND will require that the admin manually upgrade bind.keys
+to account for the change, before BIND will be able to resolve hosts in
+DNSSEC validated zones.
+
+
+Upgrading from BIND 8.X:
+-----------------------
+
+If you are upgrading an authoritative server from BIND 8.X, please install
+the bind9-doc package and read /usr/share/doc/bind9-doc/misc/migration.gz,
+which contains a set of notes from the BIND maintainers on what changed
+that is likely to need your attention during an upgrade.
+
+
+Upgrading from earlier bind9 packages:
+-------------------------------------
+
+If you installed an early version of the Debian bind9 packages, prior to 
+version 1:9.2.0-2 to be more precise, you may have an /etc/bind/rndc.conf 
+configuration file still on your system.  There's nothing wrong with that,
+and if you've explicitly configured keys for using rndc you may well want to
+leave things exactly as they are!
+
+However, since 9.2.0 BIND 9.X has supported an rndc.key file that both named
+and rndc will read to obtain a shared key for rndc use against a daemon on 
+the same host.  The rndc-confgen program will easily create a suitable key
+file.  To take advantage of this mechanism, you may want to:
+
+	remove the /etc/bind/rndc.conf file
+	remove the rndc key specification in the /etc/bind/named.conf file
+
+	rndc-confgen -r /dev/urandom -a
+
+Alternatively, you can 'purge' the bind9 packages and reinstall them and you
+will end up with the new behavior since it is now the default.
+
+This is more secure than using a static key that isn't generated on a per-host
+basis, and is an easy alternative to more complex key schemes if you only need
+to use rndc to talk to named on the same host.
+
+
+Known Issues:
+------------
+
+I've had a report that lwresd, at least, fails to work with some recent 2.5
+kernels.  If you see something in your logs like 
+
+	loading configuration from '/etc/bind/lwresd.conf'
+	none:0: open: /etc/bind/lwresd.conf: permission denied
+
+Try rebuilding with --disable-linux-caps added to the configure call in the 
+rules file.  I'm hoping this is a temporary problem in the 2.5 kernel series,
+but we'll see.
+
+
+Configuration Schema:
+--------------------
+
+The Debian BIND package ships with a config that will work for the majority 
+of leaf servers with no user input required.
+
+The named configuration file named.conf is located in /etc/bind, so that all 
+static configuration files relating to bind are in one place.  If you really 
+don't want named.conf in /etc/bind, then the best way to handle it is probably
+to replace /etc/bind/named.conf with a symlink to the location you want to use.
+You could also use an option to named in the init.d script, but that only works
+for named, not for things like ndc.
+
+Zone data files for the root servers, and the forward and reverse localhost
+zones are also provided in /etc/bind.
+
+The working directory for named is now /var/cache/bind.  Thus, any transient
+files generated by named, such as database files for zones the daemon is
+secondary for, will be written to the /var filesystem, where they belong.
+
+To make this work, the named.conf provided uses explicitly fully-qualified
+pathnames to reference the files in /etc/bind. 
+
+Unlike previous BIND packages for Debian, the named.conf and provided db.*
+files are tagged as conffiles.  Thus, if you just want a "caching mostly"
+server configuration for a server that does not need to be authoritative for
+anything else, you can run the provided configuration as-is.  If you want to
+hack on named.conf, or even the init.d fragment, you can feel free to.  Future
+package upgrades will treat your configuration changes sanely, as all Debian
+packages should.
+
+While you are free to craft whatever structure you wish for servers which need
+to be authoritative for additional zones, what we suggest is that you put the
+db files for any zones you are master for in /etc/bind (perhaps even in a
+subdirectory structure depending on complexity), using full pathnames in the
+named.conf file.  Any zones you are secondary for should be configured in
+named.conf with simple filenames (relative to /var/cache/bind), so the data
+files will be stored in BIND's working directory (defaults to /var/cache/bind).
+Zones subject to automatic updates (such as via DHCP and/or nsupdate) should be
+stored in /var/lib/bind, and specified with full pathnames.
+
+
+Running Chroot'ed:
+-----------------
+
+Several users have asked for Debian BIND to run in a "chroot jail".  There are
+various issues associated with making this the default configuration for the
+package in Debian.  In the meantime, reasonable instructions on how to do
+this yourself are available on the web from:
+
+	http://www.tldp.org/HOWTO/Chroot-BIND-HOWTO.html
+
+
+Running Non-Root:
+-----------------
+
+Recent versions of named can be invoked with options that specify a non-root
+user and/or group for named.  Read the named man page for more information.
+Note that when running named as a user other than root, it will not be able
+to find new interfaces that appear dynamically, such as during a PCMCIA card
+insertion, or if you're running some flavors of IPSEC and/or IP over IP
+tunnels.  If you cannot live with those limitations, feel free to edit the
+/etc/init.d/bind9 script to change the invocation of named.
+
+The default is now to run as the user 'bind' (which is automatically created
+in the group 'bind', if it doesn't exist), unless named.conf has been changed.
+To change this, edit /etc/default/bind9
+
+Please note that 'ndc restart' doesn't honor all the original command line
+options to named, so we explicitly don't use it in the init.d script provided
+with the package, and you should be careful about using it if you decide to
+run named non-root.
+
+
+PPP Control Script:
+-----------------
+
+Unfortunately, 'ndc reload' will not honor any command line options that were 
+fed to named on the initial invocation.  If you can live with that, and
+want to wiggle your DNS configuration when your PPP link goes up or down, the
+following script fragment from Francesco Potorti` <pot@gnu.org> may be helpful
+to you:
+   
+   I suggest adding this as bot /etc/ppp/ip-up.d/bind and
+   /etc/ppp/ip-down.d/bind:
+   
+   ================================================================
+   #!/bin/sh
+   if [ -x /usr/sbin/ndc -a -x /usr/sbin/named ]
+   then
+           /usr/sbin/ndc reload > /dev/null
+   fi
+   ================================================================
+   
+   This should cause no harm in any case, and should be helpful in these
+   cases:
+   - you configure bind as a forwarder.  When ppp is down, it cannot access
+     the network.  As soon as ppp is up, it is forced by the script to try
+     again, and it succeeds.
+   - someone writes a clever script that, coupled with the `usepeerdns'
+     command of pppd, makes a forwarding-only bind use the right servers by
+     rewriting the configuration file after ppp goes up.  Then the script
+     above makes bind reload the configuration.
+   
+   Now, someone should write that clever script :-)
+   
+   By the way, this is a  badly wanted feature, that should help setting up
+   a ppp connection automatically.   Currently, setting up a ppp connection
+   is much easier on a windows system than on linux, and there is really no
+   reason why it should be so, given that all the tools are there.
+
+
+Apparmor Profile
+----------------
+If your system uses apparmor, please note that the shipped enforcing profile
+works with the default installation, and changes in your configuration may
+require changes to the installed apparmor profile. Please see
+https://wiki.ubuntu.com/DebuggingApparmor before filing a bug against this
+software.

SCR2.2/TP22/DOC/db.1.168.192.in-addr.arpa

@@ -0,0 +1,19 @@
+$TTL 7200
+@ IN SOA osiris.tp.scr. root.tp.scr. (
+	202306061627  ;Serial
+		3600  ;Refresh
+		  60  ;Retry
+	       86400  ;Expire
+		 600) ;Negative Catching TTL
+;
+@ IN NS eno.tp.scr.  
+@ IN NS owt.tp.scr.
+@ IN NS eerht.tp.scr.
+@ IN NS ruof.tp.scr.
+@ IN NS osiris.tp.scr.
+
+eno IN A 192.168.1.1
+owt IN A 192.168.1.2
+eerht IN A 192.168.1.3
+ruof IN A 192.168.1.4
+osiris IN A 192.168.1.158

SCR2.2/TP22/DOC/db.tp.scr

@@ -0,0 +1,15 @@
+$TTL 7200
+@ IN SOA osiris.tp.scr. root.tp.scr. (
+	202306061557  ;Serial
+		3600  ;Refresh
+		  60  ;Retry
+	       86400  ;Expire
+		 600) ;Negative Catching TTL
+;
+@ IN NS osiris.tp.scr.
+
+eno IN A 192.168.1.1
+owt IN A 192.168.1.2
+eerht IN A 192.168.1.3
+ruof IN A 192.168.1.4
+osiris IN A 192.168.1.158

SCR2.2/TP22/DOC/db.tp.scr.inv

@@ -0,0 +1,15 @@
+$TTL 7200
+@ IN SOA osiris.tp.scr. root.tp.scr. (
+	202306061557  ;Serial
+		3600  ;Refresh
+		  60  ;Retry
+	       86400  ;Expire
+		 600) ;Negative Catching TTL
+;
+@ IN NS osiris.tp.scr.
+
+eno IN A 192.168.1.1
+owt IN A 192.168.1.2
+eerht IN A 192.168.1.3
+ruof IN A 192.168.1.4
+osiris IN A 192.168.1.158

SCR2.2/TP22/DOC/named.conf.local

@@ -0,0 +1,17 @@
+//
+// Do any local configuration here
+//
+
+// Consider adding the 1918 zones here, if they are not used in your
+// organization
+//include "/etc/bind/zones.rfc1918";
+
+zone "tp.scr" {
+        type master ;
+        file "/etc/bind/db.tp.scr";
+};
+zone "1.168.192.in-addr.arpa" {
+        type master ;
+        file "/etc/bind/db.tp.scr.inv";
+};
+

SCR2.2/TP22/dns1.imn

@@ -0,0 +1,169 @@
+node n0 {
+    type lanswitch
+    network-config {
+	hostname switch1
+	!
+    }
+    canvas c0
+    iconcoords {456 96}
+    labelcoords {456 119}
+    interface-peer {e0 n1}
+    interface-peer {e1 n2}
+    interface-peer {e2 n3}
+    interface-peer {e3 n4}
+    interface-peer {e4 n5}
+}
+
+node n1 {
+    type host
+    network-config {
+	hostname osiris
+	!
+	interface eth0
+	 ipv6 address fc00::10/64
+	 mac address 42:00:aa:00:00:00
+	 ip address 192.168.1.158/24
+	!
+	interface lo0
+	 type lo
+	 ip address 127.0.0.1/8
+	 ipv6 address ::1/128
+	!
+    }
+    canvas c0
+    iconcoords {120 144}
+    labelcoords {120 180}
+    interface-peer {eth0 n0}
+}
+
+node n2 {
+    type pc
+    network-config {
+	hostname eno
+	!
+	interface eth0
+	 ipv6 address fc00::20/64
+	 mac address 42:00:aa:00:00:01
+	 ip address 192.168.1.1/24
+	!
+	interface lo0
+	 type lo
+	 ip address 127.0.0.1/8
+	 ipv6 address ::1/128
+	!
+    }
+    canvas c0
+    iconcoords {216 288}
+    labelcoords {216 319}
+    interface-peer {eth0 n0}
+}
+
+node n3 {
+    type pc
+    network-config {
+	hostname owt
+	!
+	interface eth0
+	 ipv6 address fc00::21/64
+	 mac address 42:00:aa:00:00:02
+	 ip address 192.168.1.2/24
+	!
+	interface lo0
+	 type lo
+	 ip address 127.0.0.1/8
+	 ipv6 address ::1/128
+	!
+    }
+    canvas c0
+    iconcoords {384 360}
+    labelcoords {384 391}
+    interface-peer {eth0 n0}
+}
+
+node n4 {
+    type pc
+    network-config {
+	hostname eerht
+	!
+	interface eth0
+	 ipv6 address fc00::22/64
+	 mac address 42:00:aa:00:00:03
+	 ip address 192.168.1.3/24
+	!
+	interface lo0
+	 type lo
+	 ip address 127.0.0.1/8
+	 ipv6 address ::1/128
+	!
+    }
+    canvas c0
+    iconcoords {624 360}
+    labelcoords {624 391}
+    interface-peer {eth0 n0}
+}
+
+node n5 {
+    type pc
+    network-config {
+	hostname ruof
+	!
+	interface eth0
+	 ipv6 address fc00::23/64
+	 mac address 42:00:aa:00:00:04
+	 ip address 192.168.1.4/24
+	!
+	interface lo0
+	 type lo
+	 ip address 127.0.0.1/8
+	 ipv6 address ::1/128
+	!
+    }
+    canvas c0
+    iconcoords {792 264}
+    labelcoords {792 295}
+    interface-peer {eth0 n0}
+}
+
+link l0 {
+    nodes {n0 n1}
+    bandwidth 0
+}
+
+link l1 {
+    nodes {n2 n0}
+    bandwidth 0
+}
+
+link l2 {
+    nodes {n3 n0}
+    bandwidth 0
+}
+
+link l3 {
+    nodes {n4 n0}
+    bandwidth 0
+}
+
+link l4 {
+    nodes {n5 n0}
+    bandwidth 0
+}
+
+canvas c0 {
+    name {Canvas0}
+}
+
+option show {
+    interface_names yes
+    ip_addresses yes
+    ipv6_addresses no
+    node_labels yes
+    link_labels yes
+    background_images no
+    annotations yes
+    hostsAutoAssign no
+    grid yes
+    iconSize normal
+    zoom 1.0
+}
+

SCR2.2/TP23/host10.db.root

@@ -0,0 +1,20 @@
+;       This file holds the information on root name servers needed to 
+;       initialize cache of Internet domain name servers
+;       (e.g. reference this file in the "cache  .  <file>"
+;       configuration file of BIND domain name servers). 
+; 
+;       This file is made available by InterNIC 
+;       under anonymous FTP as
+;           file                /domain/named.cache 
+;           on server           FTP.INTERNIC.NET
+;       -OR-                    RS.INTERNIC.NET
+;
+;       last update:     June 08, 2023
+;       related version of root zone:     2023060802
+; 
+; 
+; OPERATED BY WIDE
+;
+.                        3600000      NS    ROOT-SERV.
+ROOT-SERV.      3600000      A     90.90.0.10
+; End of file

SCR2.2/TP23/named.root

@@ -0,0 +1,92 @@
+;       This file holds the information on root name servers needed to 
+;       initialize cache of Internet domain name servers
+;       (e.g. reference this file in the "cache  .  <file>"
+;       configuration file of BIND domain name servers). 
+; 
+;       This file is made available by InterNIC 
+;       under anonymous FTP as
+;           file                /domain/named.cache 
+;           on server           FTP.INTERNIC.NET
+;       -OR-                    RS.INTERNIC.NET
+;
+;       last update:     June 08, 2023
+;       related version of root zone:     2023060802
+; 
+; FORMERLY NS.INTERNIC.NET 
+;
+.                        3600000      NS    A.ROOT-SERVERS.NET.
+A.ROOT-SERVERS.NET.      3600000      A     198.41.0.4
+A.ROOT-SERVERS.NET.      3600000      AAAA  2001:503:ba3e::2:30
+; 
+; FORMERLY NS1.ISI.EDU 
+;
+.                        3600000      NS    B.ROOT-SERVERS.NET.
+B.ROOT-SERVERS.NET.      3600000      A     199.9.14.201
+B.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:200::b
+; 
+; FORMERLY C.PSI.NET 
+;
+.                        3600000      NS    C.ROOT-SERVERS.NET.
+C.ROOT-SERVERS.NET.      3600000      A     192.33.4.12
+C.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:2::c
+; 
+; FORMERLY TERP.UMD.EDU 
+;
+.                        3600000      NS    D.ROOT-SERVERS.NET.
+D.ROOT-SERVERS.NET.      3600000      A     199.7.91.13
+D.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:2d::d
+; 
+; FORMERLY NS.NASA.GOV
+;
+.                        3600000      NS    E.ROOT-SERVERS.NET.
+E.ROOT-SERVERS.NET.      3600000      A     192.203.230.10
+E.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:a8::e
+; 
+; FORMERLY NS.ISC.ORG
+;
+.                        3600000      NS    F.ROOT-SERVERS.NET.
+F.ROOT-SERVERS.NET.      3600000      A     192.5.5.241
+F.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:2f::f
+; 
+; FORMERLY NS.NIC.DDN.MIL
+;
+.                        3600000      NS    G.ROOT-SERVERS.NET.
+G.ROOT-SERVERS.NET.      3600000      A     192.112.36.4
+G.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:12::d0d
+; 
+; FORMERLY AOS.ARL.ARMY.MIL
+;
+.                        3600000      NS    H.ROOT-SERVERS.NET.
+H.ROOT-SERVERS.NET.      3600000      A     198.97.190.53
+H.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:1::53
+; 
+; FORMERLY NIC.NORDU.NET
+;
+.                        3600000      NS    I.ROOT-SERVERS.NET.
+I.ROOT-SERVERS.NET.      3600000      A     192.36.148.17
+I.ROOT-SERVERS.NET.      3600000      AAAA  2001:7fe::53
+; 
+; OPERATED BY VERISIGN, INC.
+;
+.                        3600000      NS    J.ROOT-SERVERS.NET.
+J.ROOT-SERVERS.NET.      3600000      A     192.58.128.30
+J.ROOT-SERVERS.NET.      3600000      AAAA  2001:503:c27::2:30
+; 
+; OPERATED BY RIPE NCC
+;
+.                        3600000      NS    K.ROOT-SERVERS.NET.
+K.ROOT-SERVERS.NET.      3600000      A     193.0.14.129
+K.ROOT-SERVERS.NET.      3600000      AAAA  2001:7fd::1
+; 
+; OPERATED BY ICANN
+;
+.                        3600000      NS    L.ROOT-SERVERS.NET.
+L.ROOT-SERVERS.NET.      3600000      A     199.7.83.42
+L.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:9f::42
+; 
+; OPERATED BY WIDE
+;
+.                        3600000      NS    M.ROOT-SERVERS.NET.
+M.ROOT-SERVERS.NET.      3600000      A     202.12.27.33
+M.ROOT-SERVERS.NET.      3600000      AAAA  2001:dc3::35
+; End of file

SCR2.2/TP23/root-serv.db.root

@@ -0,0 +1,13 @@
+@	IN      SOA     ROOT-SERV. root. (
+                   2007010401           ; Serial
+                         3600           ; Refresh [1h]
+                          600           ; Retry   [10m]
+                        86400           ; Expire  [1d]
+                          600 )         ; Negative Cache TTL [1h]
+;
+mos       IN      NS      sethi.
+mos       IN      NS      kheops.
+
+sethi.mos.    IN      A      80.80.0.20 
+kheops.mos.   IN      A      80.80.0.10
+

SCR3.1/TP3/diff.c

@@ -5,7 +5,6 @@
 #include <stdlib.h>
 #include <wait.h>
 #include <fcntl.h>
-de
 
 int main(int argc, char **argv){
 	if (argc != 3){
@@ -14,7 +13,7 @@ int main(int argc, char **argv){
 	}
 	pid_t p;
 	int fd1, fd2;
-	char buf[BUF_SIZE];
+	char buf1, buf2;
 	fd1 = open(argv[1], O_RDONLY);
 	fd2 = open(argv[2], O_RDONLY);
 	if (fd1 == -1 || fd2 == -1){
@@ -27,5 +26,10 @@ int main(int argc, char **argv){
 			perror("Error while creating a new process");
 			return EXIT_FAILURE;
 		case 0:
-			while(read
+			// Read file a
+			read(fd1, &buf1, sizeof(char));
+		default:
+			//Read file b & compare both files
+			read(fd2, &buf2, sizeof(char));
+
 

SCR3.1/TP5/ex3.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+long int fibo (long int n)
+{
+	if (n <= 1)
+		return n;
+	long int pipe[2];
+	pid_t proc;
+	assert (pipe(pipe) >= 0);
+	proc = fork();
+	assert(proc != -1);
+	switch(p){
+		case 0:
+			break;
+		default:
+			/*code*/
+	}
+
+}
+
+
+
+int main(int argc, char *argv[])
+{
+	long int n;
+	assert(argc > 1);
+	n=strtol(argv[1],NULL,0);
+	printf("fibo(%ld) = %ld\n",n,fibo(n));
+	return 0;
+}
+

SCR3.1/TP6/ex3.c

@@ -0,0 +1,74 @@
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+static inline double tstamp(void)
+{
+    struct timespec tv;
+    clock_gettime(CLOCK_REALTIME, &tv);
+    return tv.tv_sec + tv.tv_nsec * 1.0e-9;
+}
+
+typedef struct thread_arg
+{
+    long int start;
+    long int limit;
+    long int inc;
+    long int S;
+} thread_arg;
+
+void *slice(void *arg)
+{
+    thread_arg *a = (thread_arg *)arg;
+    long int S = 0;
+
+    for (long int i = a->start; i <= a->limit; i = i + a->inc)
+    {
+        S += i;
+    }
+    a->S = S;
+    return NULL;
+}
+
+int main(int argc, char *argv[])
+{
+    long int N, M, S = 0;
+    thread_arg *args;
+    pthread_t *ths;
+    double t1, t2;
+
+    assert(argc >= 3);
+    N = strtol(argv[1], NULL, 0);
+    M = strtol(argv[2], NULL, 0);
+    t1 = tstamp();
+
+    args = (thread_arg *)calloc(M, sizeof(thread_arg));
+    assert(args != NULL);
+
+    ths = (pthread_t *)calloc(M, sizeof(pthread_t));
+    assert(ths != NULL);
+
+    for (int i = 0; i < M; i++)
+    {
+        args[i].inc = M;
+        args[i].limit = N;
+        args[i].start = i + 1;
+        pthread_create(ths + i, NULL, slice, (void *)(args + i));
+    }
+
+    for (int i = 0; i < M; i++)
+    {
+        pthread_join(ths[i], NULL);
+        S += args[i].S;
+    }
+
+    assert(S == N * (N + 1) / 2);
+
+    t2 = tstamp();
+    printf("S = %ld\n", S);
+    printf("t = %lf\n", t2 - t1);
+
+    return 0;
+}

SCR3.1/TP6/stack/stack.c

@@ -3,15 +3,18 @@
 #include <assert.h>
 
 struct stack_t {
-	/*
+	int size;
-	  votre implantation
+	int * tableau;
-	  
+	int index;
-	 */ 
 };
 
+
 stack_t * stack_create( int max_size)
 {
-
+	stack_t new;
+	new.size = max_size;
+	new.index = index;
+	return *new;
 }
 
 
@@ -22,11 +25,22 @@ int stack_destroy(stack_t * s)
 
 int stack_push(stack_t *s,int val)
 {
-
+	if (s->index == 0){
+		s->tableau = malloc(s->size * sizeof(int);
+	}
+	if (s->index == s->size - 1){
+		return -1
+	}
+	s->tableau[value]=val;
+	s->value = s->value + 1;
+	return EXIT_SUCCESS;
 }
 
 int stack_pop(stack_t *s,int * val)
 {
-
+	if (s->index == 0){
+		return -1;
+	}
+	s->
 }
 

SCR3.1/devoir27/TaF27

@@ -0,0 +1,62 @@
+Créez un répertoire cntr_r3.05, et pour chaque exercice un sous-répertoire (Ex1,
+Ex2, etc.) pour y placer vos réponses.
+
+Les exercices sont indépendants. Vous rendrez une archive compressée à la fin de
+l'épreuve sur le site :
+
+http://www.iut-fbleau.fr/site/site/DEVOIR
+
+# EX1
+1) Ecrivez un programme gdf1.c qui implante le diagramme de processus
+conforme à la sortie suivante de la commande ps :
+
+F S   UID   PID  PPID  C PRI  NI ADDR SZ WCHAN  TTY          TIME CMD
+0 S  1000 30539 28785  0  80   0 -  1039 hrtime pts/0    00:00:00 a.out
+1 S  1000 30542 30539  0  80   0 -  1039 hrtime pts/0    00:00:00  \_ a.out
+1 S  1000 30544 30542  0  80   0 -  1039 hrtime pts/0    00:00:00      \_ a.out
+1 S  1000 30546 30544  0  80   0 -  1039 hrtime pts/0    00:00:00      |   \_ a.out
+1 S  1000 30545 30542  0  80   0 -  1039 hrtime pts/0    00:00:00      \_ a.out
+
+2) Expliquez (dans gdf2.txt) ce que provoque  kill -TERM  30544.
+
+3) Modifiez votre programme (gdf3.c) pour que le processus correspondant à 30546 utilise un
+tube pour communiquer son PID au le processus correspondant à 30539.
+
+# EX2
+Le sous-repertoire 'src/'  de votre répértoire de travail contient  le source du
+programme 'cachetst.c'.  Ce programme  peut être  utilisé pour  tester certaines
+propriétés de  la mémoire  cache. Il  crée une liste  de structures  et effectue
+plusieurs passages par cette liste en faisant un test sur chaque élément.
+
+La  longueur de  la liste  et le  nombre de  passages (itérations)  doivent être
+donnsés  sur la  ligne de  commande. Compilez  et lancez  ce programme  avec par
+exemple les valeurs  '1000' '1000' sur la  ligne de commande pour  voir ce qu'il
+calcule. Augmentez ces valeurs en prenant  '10000' '100000' pour voir que le
+temps de calcul est  assez long.
+
+Votre travail consiste à rajouter une partie  de code à ce programme (appelez le
+'vcachetst.c') pour qu'il affiche  le nombre de tests actuellement
+passés (la valeur de la variable 'z') après un ctrl + z depuis le terminal.
+
+Mettez le source du programme 'vcachetst.c' dans le sous-repertoire 'src/'
+
+# EX3
+Écrire un programme où un processus père  crée deux fils ; chaque fils attend un
+couple d'entiers  (x, y) du père  et le renvoie dans  l'ordre croissant. (combien
+faut-il de tubes ?)
+
+ 1.  Le père prend quatre entiers a, b, c, d sur la ligne de commande,
+
+ 2. il ordonne les couples (a1 , b1) et  (c1, d1) grâce à ses deux fils (le père
+ donne le travail à **ses deux fils** avant de récupèrer le résultat)
+
+ 3. Puis il ordonne  les couples (a1, c1) et (b1, d1) grâce  à ses deux fils, et
+ il obtient les couples (a2, c2) et (b2, d2).
+
+ 4. Finalement, il ordonne le couple (c2 , b2) à l'aide d'un fils Il obtient le.
+ couple (c3, b3)                                                               .
+
+ 5.  Il affiche (a2 , c3 , b3 , d2).
+
+On  vieillera  à fermer  les  descripteurs  de  fichiers  inutilisés, à  ne  pas
+dupliquer du code inutiliement.

SCR3.1/devoir27/ex1/gdf1.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(void){
+	pid_t x, x1, x2, x3;
+	x1 = fork();
+	if (x1 == 0){
+		x2=fork();
+		if (x2 == 0)
+			x = fork();
+		x3=fork();
+	}
+}
+	
+

SCR3.1/devoir27/ex1/gdf2.txt

@@ -0,0 +1 @@
+La commande "kill -TERM 30544" provoque l'arrêt forcé du processus 30544, à cause du signal de terminaison envoyé

SCR3.1/devoir27/ex1/gdf3.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <fcntl.h>
+#define BUF_SIZE 128
+
+int main(void){
+	pid_t x, x1, x2, x3;
+	int p[2];
+	char buf;
+	assert(pipe(p) != -1);
+	x1 = fork();
+	if (x1 == 0){
+		x2=fork();
+		if (x2 == 0){
+			x = fork();
+			if (x == 0){
+				close(p[0]);
+				dup2(p[1], 1);
+				close(p[1]);
+				printf("%d", getpid());
+			}
+			x3=fork();
+		}
+		sleep(1);
+	}
+	if (x1 > 0){
+		close(p[1]);
+		while(read(p[0], &buf, sizeof(char)) > 0)
+			write(1, &buf, sizeof(char));
+	}
+	close(p[0]);
+	printf("\n");
+	return EXIT_SUCCESS;
+}
+	
+

SCR3.1/devoir27/ex2/helpers.c

@@ -0,0 +1,19 @@
+#include "helpers.h"
+#include <signal.h>
+#include <time.h>
+
+int set_signal_handler(int signo, void (*handler)(int)) {
+    struct sigaction sa;
+    sa.sa_handler = handler;    // call `handler` on signal
+    sigemptyset(&sa.sa_mask);   // don't block other signals in handler
+    sa.sa_flags = SA_RESTART;            //  restart system calls
+    return sigaction(signo, &sa, NULL);
+}
+
+double tstamp(void) {                                                                                    
+	struct timespec tv;
+	clock_gettime(CLOCK_REALTIME, &tv);
+	return tv.tv_sec + tv.tv_nsec * 1.0e-9;
+}
+
+

SCR3.1/devoir27/ex2/helpers.h

@@ -0,0 +1,7 @@
+#ifndef _HELPERS_H
+#define _HELPERS_H
+
+int set_signal_handler(int signo, void (*handler)(int));
+double tstamp(void);
+
+#endif

SCR3.1/devoir27/ex2/vcachetest.c

@@ -0,0 +1,95 @@
+#include <stdint.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <x86intrin.h>
+#include <signal.h>
+#include "helpers.c"
+#include "helpers.h"
+
+
+#define PLSIZE 63
+
+
+
+struct lst {
+  struct lst * next;
+  long int payload[PLSIZE];
+}  l;
+
+
+struct lst * mkws(int size) 
+{
+	int i,j;
+	struct lst * ws0,*ws;
+
+	if (size == 0) 
+		return NULL;
+
+	srand(time(0));
+	ws = calloc(1,sizeof(struct lst));
+	ws->next = NULL;
+
+	for (i=0;i<PLSIZE;i++) 
+		ws->payload[i]=(rand())%2;
+
+	for (j=1;j<size;j++) {
+		ws0=ws;
+		ws = calloc(1,sizeof(struct lst));
+		if (ws==NULL) {
+			fprintf(stderr,"Can't add element...\n");
+			exit(1);
+		}
+		for (i=0;i<PLSIZE;i++) 
+			ws->payload[i]=(rand())%2;
+		ws->next = ws0;
+	}
+	return ws;
+}
+
+long int z = 0;
+
+void kill_prg(int){
+	printf("Nombre de tests effectués: %ld\n", z);
+}
+
+int main(int argc, char ** argv) 
+{
+	struct lst * ws, * ws0;
+
+	long long int start, end, dif;
+
+	long int i, x, size, it;
+
+	if (argc != 3) {
+		printf("Usage: %s <list size> <iterations>\n",argv[0]);
+		exit(1);
+	}
+	set_signal_handler(SIGTSTP, &kill_prg);
+	size=strtol(argv[1],NULL,0);
+
+	ws = mkws(size);
+	if (ws == NULL) {
+		printf("NIL list created...\n");
+		exit(1);
+	}
+
+	it = strtol(argv[2],NULL,0);
+
+	start = __rdtsc(); 
+	for (i = 0; i < it; i++) {
+		ws0 = ws;
+		while (ws0 != NULL) {
+			x = ws0->payload[3];
+			x++;
+			z++;
+			ws0 = ws0->next;
+		}
+	}
+	end = __rdtsc();
+
+	dif = end - start;
+	printf("Cycles/element = %lf\n", ((double) dif)/((double) size*it));
+	exit(0);
+}

SCR3.1/devoir27/ex3/ex3.c

@@ -0,0 +1,86 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int ordre(int a, int b){
+	if (a < b)
+	    return 1;
+	else
+	    return 0;
+}
+
+int main(int argc, char** argv){
+	if (argc != 5){
+		printf("Usage : %s <entier1> <entier2> <entier3> <entier4>\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+	pid_t x1, x2;
+	int p1[2], p2[2],tmp, a, b, c, d;
+	int x3 = strtod(argv[1], NULL), x4 = strtod(argv[2], NULL);
+	pipe(p1);
+	pipe(p2);
+	x1=fork();
+	x2=fork();
+	if (x1 > 0){
+		close(p1[0]);
+		write(p1[1],&x3, sizeof(int));
+		sleep(2);
+		write(p1[1],(int*) &x4, sizeof(int));
+		x3 = strtod(argv[3], NULL);
+		x4 = strtod(argv[4], NULL);
+		write(p2[1], &x3, sizeof(int));
+		sleep(2);
+		write(p2[1], &x3, sizeof(int));
+		close(p1[1]);
+		close(p2[1]);
+		dup(p1[0]);
+		read(p1[0], &a, sizeof(int));
+		sleep(2);
+		read(p1[0], &b, sizeof(int));
+		close(p1[0]);
+		dup(p2[0]);
+		read(p2[0], &c, sizeof(int));
+		sleep(2);
+		read(p2[0], &d, sizeof(int));
+		close(p2[0]);
+		printf("a = %d, b = %d, c = %d, d = %d\n", a, b, c, d);
+	}
+	if (x1 == 0){
+		close(p1[1]);
+		read(p1[0], &x3, sizeof(int));
+		sleep(2);
+		read(p1[0], &x4, sizeof(int));
+		if (!ordre(x3, x4)){
+			tmp = x4;
+			x4 = x3;
+			x3 = tmp;
+		}
+		printf("x3 = %d, x4 = %d", x3, x4);
+		close(p1[0]);
+		write(p1[1], &x3, sizeof(int));
+		sleep(2);
+		write(p1[1], &x4, sizeof(int));
+	}
+	if (x2 == 0){
+		close(p2[1]);
+		read(p2[0], &x3, sizeof(int));
+		sleep(2);
+		read(p2[0], &x4, sizeof(int));
+		ordre(x3, x4);
+		if (!ordre(x3, x4)){
+			tmp = x3;
+			x3 = x4;
+			x4 = x3;
+		}
+		dup(p2[1]);
+		close(p2[0]);
+		write(p2[1], &x3, sizeof(int));
+		sleep(2);
+		write(p2[1], &x4, sizeof(int));
+
+	}
+}
+
+
+

SCR3.1/devoir27/src/cachetst.c

@@ -0,0 +1,87 @@
+#include <stdint.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <x86intrin.h>
+#include <signal.h>
+
+#define PLSIZE 63
+
+
+
+struct lst {
+  struct lst * next;
+  long int payload[PLSIZE];
+}  l;
+
+
+struct lst * mkws(int size) 
+{
+	int i,j;
+	struct lst * ws0,*ws;
+
+	if (size == 0) 
+		return NULL;
+
+	srand(time(0));
+	ws = calloc(1,sizeof(struct lst));
+	ws->next = NULL;
+
+	for (i=0;i<PLSIZE;i++) 
+		ws->payload[i]=(rand())%2;
+
+	for (j=1;j<size;j++) {
+		ws0=ws;
+		ws = calloc(1,sizeof(struct lst));
+		if (ws==NULL) {
+			fprintf(stderr,"Can't add element...\n");
+			exit(1);
+		}
+		for (i=0;i<PLSIZE;i++) 
+			ws->payload[i]=(rand())%2;
+		ws->next = ws0;
+	}
+	return ws;
+}
+
+
+int main(int argc, char ** argv) 
+{
+	struct lst * ws, * ws0;
+
+	long long int start, end, dif;
+
+	long int i, x, z = 0, size, it;
+
+	if (argc != 3) {
+		printf("Usage: %s <list size> <iterations>\n",argv[0]);
+		exit(1);
+	}
+
+	size=strtol(argv[1],NULL,0);
+
+	ws = mkws(size);
+	if (ws == NULL) {
+		printf("NIL list created...\n");
+		exit(1);
+	}
+
+	it = strtol(argv[2],NULL,0);
+
+	start = __rdtsc(); 
+	for (i = 0; i < it; i++) {
+		ws0 = ws;
+		while (ws0 != NULL) {
+			x = ws0->payload[3];
+			x++;
+			z++;
+			ws0 = ws0->next;
+		}
+	}
+	end = __rdtsc();
+
+	dif = end - start;
+	printf("Cycles/element = %lf\n", ((double) dif)/((double) size*it));
+	exit(0);
+}

SCR3.1/devoir27/src/helpers.c

@@ -0,0 +1,19 @@
+#include "helpers.h"
+#include <signal.h>
+#include <time.h>
+
+int set_signal_handler(int signo, void (*handler)(int)) {
+    struct sigaction sa;
+    sa.sa_handler = handler;    // call `handler` on signal
+    sigemptyset(&sa.sa_mask);   // don't block other signals in handler
+    sa.sa_flags = SA_RESTART;            //  restart system calls
+    return sigaction(signo, &sa, NULL);
+}
+
+double tstamp(void) {                                                                                    
+	struct timespec tv;
+	clock_gettime(CLOCK_REALTIME, &tv);
+	return tv.tv_sec + tv.tv_nsec * 1.0e-9;
+}
+
+

SCR3.1/devoir27/src/helpers.h

@@ -0,0 +1,7 @@
+#ifndef _HELPERS_H
+#define _HELPERS_H
+
+int set_signal_handler(int signo, void (*handler)(int));
+double tstamp(void);
+
+#endif

SCR3.1/devoir27/src/vcachetest.c

@@ -0,0 +1,95 @@
+#include <stdint.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <x86intrin.h>
+#include <signal.h>
+#include "helpers.c"
+#include "helpers.h"
+
+
+#define PLSIZE 63
+
+
+
+struct lst {
+  struct lst * next;
+  long int payload[PLSIZE];
+}  l;
+
+
+struct lst * mkws(int size) 
+{
+	int i,j;
+	struct lst * ws0,*ws;
+
+	if (size == 0) 
+		return NULL;
+
+	srand(time(0));
+	ws = calloc(1,sizeof(struct lst));
+	ws->next = NULL;
+
+	for (i=0;i<PLSIZE;i++) 
+		ws->payload[i]=(rand())%2;
+
+	for (j=1;j<size;j++) {
+		ws0=ws;
+		ws = calloc(1,sizeof(struct lst));
+		if (ws==NULL) {
+			fprintf(stderr,"Can't add element...\n");
+			exit(1);
+		}
+		for (i=0;i<PLSIZE;i++) 
+			ws->payload[i]=(rand())%2;
+		ws->next = ws0;
+	}
+	return ws;
+}
+
+long int z = 0;
+
+void kill_prg(int){
+	printf("Nombre de tests effectués: %ld\n", z);
+}
+
+int main(int argc, char ** argv) 
+{
+	struct lst * ws, * ws0;
+
+	long long int start, end, dif;
+
+	long int i, x, size, it;
+
+	if (argc != 3) {
+		printf("Usage: %s <list size> <iterations>\n",argv[0]);
+		exit(1);
+	}
+	set_signal_handler(SIGTSTP, &kill_prg);
+	size=strtol(argv[1],NULL,0);
+
+	ws = mkws(size);
+	if (ws == NULL) {
+		printf("NIL list created...\n");
+		exit(1);
+	}
+
+	it = strtol(argv[2],NULL,0);
+
+	start = __rdtsc(); 
+	for (i = 0; i < it; i++) {
+		ws0 = ws;
+		while (ws0 != NULL) {
+			x = ws0->payload[3];
+			x++;
+			z++;
+			ws0 = ws0->next;
+		}
+	}
+	end = __rdtsc();
+
+	dif = end - start;
+	printf("Cycles/element = %lf\n", ((double) dif)/((double) size*it));
+	exit(0);
+}

SCR3.1/gdf.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+
+
+int main(void){
+	pid_t x1,x2,x3,x4;
+	x1=fork();
+	if (x1 == 0){
+		x2=fork();
+		if (x2>0) {
+			sleep(10);
+			kill(x2,SIGINT);
+		}
+	if (x2 == 0) {
+		x3=fork();
+		if (x3 == 0)
+			x4=fork();
+		if (x3 > 0){
+			sleep(5);
+			kill(x3,SIGINT);
+		}
+	      }
+	}
+	if (x1 > 0)
+		x4=fork();
+	while(1) {
+		printf(" %d\n", getpid());
+		sleep(1);
+	}
+}	
+

arm/add-int.s

@@ -0,0 +1,15 @@
+.equ SYS_EXIT, 93
+.data
+int1 : .quad 0x15
+int2 : .quad 0x2
+.text
+.global _start
+
+_start: adr x3, int1
+	ldr x0, [x3]
+	adr x3, int2
+	ldr x1, [x3]
+	add x2,x0,x1
+	mov x0, #0
+	mov w8, #SYS_EXIT
+	svc #0

arm/adds-int32.s

@@ -0,0 +1,16 @@
+.equ SYS_EXIT, 93
+.data
+int1 : .word 0x7fffffff
+int2 : .word 0x1
+.text
+.global _start
+
+_start: adr x3, int1
+	ldr w0, [x3]
+	adr x3, int2
+	ldr w1, [x3]
+	adds w2,w0,w1
+	mrs x4, nzcv
+	mov w0, #0
+	mov w8, #SYS_EXIT
+	svc #0

arm/barrel-experiment.s

@@ -0,0 +1,14 @@
+.equ SYS_EXIT, 93
+
+.data
+.text
+.globl _start
+
+_start :
+	mov x0, #15
+	add x1,x0,x0,lsl #4 //x0 * 16 + x0
+	mov x2, #1
+	sub x1,xzr,x2, lsl #3 // 0 - 8
+	mov w8, #SYS_EXIT
+	svc #0
+

arm/mult-bin-loop.c

@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(){
+	unsigned int a = 0xa2;
+	unsigned int b = 0xb;
+	unsigned long long int res = 0;
+	unsigned long long int extra = (unsigned long long int) a;
+	while (b) {
+		if (b & 0x1) res += extra;
+		extra = extra << 1;
+		b = b >> 1;
+	}
+	exit(0);
+}
+

arm/mult-bin-loop.s

@@ -0,0 +1,28 @@
+	.equ SYS_EXIT,93
+	.data
+int1: .word 0xa2
+int2: .word 0xb
+	.text
+	.globl _start
+_start:
+	adr x1, int1
+	ldr w0, [x1]
+	uxtw x1, w0 // int1 is in x1
+	adr x2, int2
+	ldr w3, [x2]
+	uxtw x2, w3 // int2 is in x2
+	mov x0, #0 // result is in x0
+loop: 
+	cbz x2, exit
+	tbz x2, #0, next
+	add x0, x2, #0 
+next: 
+	lsl x2, x2, #1
+	lsr x1, x1, #1
+	b loop
+
+exit: 	mov x0,#0
+      	mov w8,#SYS_EXIT
+      	svc #0x0
+
+	.end

arm/notes.txt

@@ -0,0 +1,3 @@
+cmp = subs sans sauvegarde résultat
+0111 + 0001 
+tst = 

arm/printHW.s

@@ -0,0 +1,24 @@
+/*
+Lines enclosed here are comments
+A small program: prints "Hello World!"
+*/
+// From // to the end of this line is a comment: next are directives to the assembler
+.equ SYS_EXIT, 93
+.equ SYS_WRITE, 64
+.data // tells assembler to assemble the following in the data section
+msg: .asciz "Hello World!\n" //msg retains the address of the string
+.text // tells assembler to assemble the following
+// in the text (code) section
+.globl _start // _start is there where the program starts,
+// .globl makes it visible to the linker
+_start:
+mov x0,#1 // value 1 is placed in register x0
+adr x1,msg // the address retained by label msg is placed in register x1
+mov x2,#13
+mov w8, #SYS_WRITE // svc must find the syscall number in w8
+// and the syscall arguments in x0,x1,x2
+svc #0 // invoke syscall: displays on the screen
+mov x0, #0 // in x0 put the value you want to exit with
+mov w8,#SYS_EXIT
+svc #0
+.end

arm/shift-experiment.s

@@ -0,0 +1,18 @@
+.equ SYS_EXIT, 93
+
+.data 
+.text
+	int: .quad 0x8000000000000000
+.globl _start
+
+_start :
+	mov x0, #1
+	lsl x1, x0, #3
+	lsr x2, x0, #1
+	adr x6, int
+	ldr x3,[x6]
+	lsr x4, x3, #3
+	asr x5, x3, #3
+	mov w8, #SYS_EXIT
+	svc #0 
+

arm/w-vs-x-and-extension.s

@@ -0,0 +1,16 @@
+.equ SYS_EXIT, 93
+
+.data
+	int: .quad 0x11223344aabbccdd
+	int32: .word 0x887766ee
+.text
+.globl _start
+_start:
+	adr x1, int
+	ldr x0,[x1]
+	adr x1, int32
+	ldr w0,[x1] //Le registre x0 est vidé pour ne contenir seulement la valeur int32
+	sxtw x0, w0
+	mov x0, #0
+	mov w8, #SYS_EXIT
+	svc #0