Lab6

.idea/OS.iml

@@ -1,2 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module classpath="CMake" type="CPP_MODULE" version="4" />

.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/cmake-build-debug/agent.pid" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/cmake-build-debug/agent.txt" charset="UTF-8" />
+  </component>
+</project>

CMakeLists.txt

@@ -8,4 +8,5 @@ SET(GCC_COVERAGE_COMPILE_FLAGS "-pthread")
 
 
 add_executable(OS
-        Lab5/ex4.c)
+        Lab6/agent.c
+        Lab6/agent.c)

Lab6/agent.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+	/*
+	On startup, the agent program creates the file
+/var/run/agent.pid and writes its PID into the file. It then reads
+the contents of a file called text.txt, prints it on the console and
+finally sleeps indefinitely
+	*/
+	FILE *file = fopen("text.txt", "w");
+    FILE *filePid = fopen("agent.txt", "w");
+    fputc(getpid(), filePid);
+    fclose(filePid);
+    fclose(file);
+    char pid_str[10];
+    fgets(pid_str, sizeof(pid_str), file);
+    fclose(file);
+
+    FILE *text_file = fopen("text.txt", "r");
+    if (text_file == NULL) {
+        printf("Error opening text.txt\n");
+        return 1;
+    }
+
+    char c;
+    while ((c = fgetc(text_file))!= EOF)
+        printf("%c", c);
+
+    fclose(text_file);
+
+    printf("\nSleeping indefinitely...\n");
+    while (1)
+        sleep(1);
+	return 0;
+}

Lab6/controller.c

@@ -0,0 +1,3 @@
+//
+// Created by emil on 01.10.2024.
+//

Lab6/example1.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+
+int main() {
+	/*
+	* Write a C program that prints “Hello world!” an infinite number
+of times.
+Run the program, and kill it by pressing (Ctrl+C). Which signal
+did the process receive? Can we handle it? Can the process ignore
+the signal?
+Run the program, and kill it by pressing (Ctrl+\). Which signal
+did the process receive? Can we handle it? Can the process ignore
+the signal? In Ubuntu, set core dump size via ulimit -c
+unlimited. The core dump file is in /var/lib/apport/coredump/.
+Check the log file /var/log/apport.log for core dump file name.
+Run the program in the background (&) and redirect stdout to a
+file output.txt, kill the process by sending the signal “SIGTERM”
+via “kill -s SIGTERM pid ” command. Can we handle the
+signal? Can the process ignore the signal? Send the signal
+“SIGKILL” if the program does not terminate politely.
+30 / 58
+	 */
+
+
+	while (1)
+	printf("Hello world!\n");
+
+	return 0;
+}

cmake-build-debug/.ninja_log

@@ -2,10 +2,32 @@
 1	59	1727194503928197251	CMakeFiles/OS.dir/Lab5/ex2-3.c.o	3ac11e55017104db
 1	69	1727194450713397978	CMakeFiles/OS.dir/Lab5/ex2.c.o	aaf388779ce03a6e
 1	54	1727193068898104463	CMakeFiles/OS.dir/Lab5/ex1.c.o	87ce1149fbd620b
+1	53	1727797041565849223	CMakeFiles/OS.dir/Lab6/example1.c.o	6be6e05f0bf8623a
 1	81	1727191541519747212	CMakeFiles/OS.dir/Lab4/ex1.c.o	fdfe48b329a854c3
 1	50	1726585076082163985	CMakeFiles/OS.dir/main.c.o	597d2975f9346988
-1	31	1727195105069329767	build.ninja	102e4adb4b6285fe
-59	91	1727194503984862096	OS	7e7768c095bc6d8a
-1	36	1727195105069329767	build.ninja	102e4adb4b6285fe
+1	32	1727798122261377224	build.ninja	102e4adb4b6285fe
+54	100	1727797041615835169	OS	87096d11c57d1daa
 0	63	1727195105082663185	CMakeFiles/OS.dir/Lab5/ex4.c.o	60daafb2653af2a5
-63	96	1727195105142663566	OS	5ac1e89d9f8b3dbb
+2	36	1727796978102865786	CMakeFiles/OS.dir/Lab6/controller.c.o	e3d69d5ce71c382d
+1	77	1727798135878055008	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+77	120	1727798135954721726	OS	d21dc05418483373
+0	51	1727798170544732035	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+51	95	1727798170594732034	OS	d21dc05418483373
+1	58	1727798268007998305	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+58	95	1727798268064664903	OS	d21dc05418483373
+1	60	1727798299751289808	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+61	103	1727798299811289723	OS	d21dc05418483373
+1	58	1727798320507925611	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+58	99	1727798320564592190	OS	d21dc05418483373
+1	56	1727798362207857032	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+56	95	1727798362264523600	OS	d21dc05418483373
+1	57	1727798440361045239	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+58	94	1727798440417711794	OS	d21dc05418483373
+1	58	1727798718513790447	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+58	93	1727798718570456989	OS	d21dc05418483373
+1	59	1727798905596710944	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+59	93	1727798905656710811	OS	d21dc05418483373
+1	57	1727798934466646963	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+57	94	1727798934523313503	OS	d21dc05418483373
+1	58	1727798985353200771	CMakeFiles/OS.dir/Lab6/agent.c.o	f04cc81de1844813
+59	93	1727798985409867312	OS	d21dc05418483373

cmake-build-debug/Testing/Temporary/LastTest.log

@@ -1,3 +1,3 @@
-Start testing: Sep 24 19:25 MSK
+Start testing: Oct 01 20:02 MSK
 ----------------------------------------------------------
-End testing: Sep 24 19:25 MSK
+End testing: Oct 01 20:02 MSK

cmake-build-debug/build.ninja

@@ -49,11 +49,11 @@ cmake_ninja_workdir = /home/emil/CLionProjects/OS/cmake-build-debug/
 
 build cmake_object_order_depends_target_OS: phony || .
 
-build CMakeFiles/OS.dir/Lab5/ex4.c.o: C_COMPILER__OS_unscanned_Debug /home/emil/CLionProjects/OS/Lab5/ex4.c || cmake_object_order_depends_target_OS
-  DEP_FILE = CMakeFiles/OS.dir/Lab5/ex4.c.o.d
+build CMakeFiles/OS.dir/Lab6/agent.c.o: C_COMPILER__OS_unscanned_Debug /home/emil/CLionProjects/OS/Lab6/agent.c || cmake_object_order_depends_target_OS
+  DEP_FILE = CMakeFiles/OS.dir/Lab6/agent.c.o.d
   FLAGS = -g -std=gnu11 -fdiagnostics-color=always
   OBJECT_DIR = CMakeFiles/OS.dir
-  OBJECT_FILE_DIR = CMakeFiles/OS.dir/Lab5
+  OBJECT_FILE_DIR = CMakeFiles/OS.dir/Lab6
 
 
 # =============================================================================
@@ -63,7 +63,7 @@ build CMakeFiles/OS.dir/Lab5/ex4.c.o: C_COMPILER__OS_unscanned_Debug /home/emil/
 #############################################
 # Link the executable OS
 
-build OS: C_EXECUTABLE_LINKER__OS_Debug CMakeFiles/OS.dir/Lab5/ex4.c.o
+build OS: C_EXECUTABLE_LINKER__OS_Debug CMakeFiles/OS.dir/Lab6/agent.c.o
   FLAGS = -g
   OBJECT_DIR = CMakeFiles/OS.dir
   POST_BUILD = :