Some miscellaneous cleanups for the included tests

programs/tests/CMakeLists.txt

@@ -1,5 +1,7 @@
 # List of programs.
 set(TEST_LIST
+    t_creat.c
+    t_write_read.c
     t_gid.c
     t_alarm.c
     t_periodic3.c
@@ -14,7 +16,6 @@ set(TEST_LIST
     t_sigmask.c
     t_getenv.c
     t_sigusr.c
-    t_exec_callee.c
     t_shmget.c
     t_stopcont.c
     t_semop.c

programs/tests/t_abort.c

@@ -23,6 +23,8 @@ void sig_handler(int sig)
         printf("handler(%d) : Correct signal. ABRT (%d/3)\n", sig, counter);
         if (counter < 3)
             abort();
+        else
+            exit(0);
 
     } else {
         printf("handler(%d) : Wrong signal.\n", sig);

programs/tests/t_creat.c

@@ -0,0 +1,37 @@
+/// @file t_creat.c
+/// @brief test the creat syscall
+/// @copyright (c) 2024 This file is distributed under the MIT License.
+/// See LICENSE.md for details.
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strerror.h>
+#include <sys/errno.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+
+int main(int argc, char* argv[]) {
+	int fd = creat("foo", 0660);
+	if (fd < 0) {
+		printf("creat: foo: %s\n", strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	if (write(fd, "foo", 3) != 3) {
+		printf("write: foo: %s\n", strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	struct stat_t st;
+	if (stat("foo", &st) < 0) {
+		printf("stat: foo: %s\n", strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	if (st.st_size != 3) {
+		printf("Wrong file size. (expected: 3, is: %u)\n", st.st_size);
+		exit(EXIT_FAILURE);
+	}
+
+	return 0;
+}

programs/tests/t_msgget.c

@@ -55,7 +55,7 @@ int main(int argc, char *argv[])
 
     // ========================================================================
     // Generating a key using ftok
-    key = ftok("/home/user/test7.txt", 5);
+    key = ftok("/README", 5);
     if (key < 0) {
         perror("Failed to generate key using ftok");
         return 1;

programs/tests/t_periodic1.c

@@ -22,12 +22,12 @@ int main(int argc, char *argv[])
     sched_setparam(cpid, &param);
     int counter   = 0;
     if (fork() == 0) {
-        char *_argv[] = { "/bin/periodic2", NULL };
+        char *_argv[] = { "/bin/tests/t_periodic2", NULL };
         execv(_argv[0], _argv);
         printf("This is bad, I should not be here! EXEC NOT WORKING\n");
     }
     if (fork() == 0) {
-        char *_argv[] = { "/bin/periodic3", NULL };
+        char *_argv[] = { "/bin/tests/t_periodic3", NULL };
         execv(_argv[0], _argv);
         printf("This is bad, I should not be here! EXEC NOT WORKING\n");
     }

programs/tests/t_semget.c

@@ -23,7 +23,7 @@ int main(int argc, char *argv[])
 
     // ========================================================================
     // Generating a key using ftok
-    key = ftok("/home/user/test7.txt", 5);
+    key = ftok("/README", 5);
     if (key < 0) {
         perror("Failed to generate key using ftok.");
         return 1;

programs/tests/t_sigfpe.c

@@ -18,25 +18,13 @@ void sig_handler(int sig)
     if (sig == SIGFPE) {
         printf("handler(%d) : Correct signal. FPE\n", sig);
         printf("handler(%d) : Exiting\n", sig);
-        // exit(1);
+        exit(0);
     } else {
         printf("handler(%d) : Wrong signal.\n", sig);
     }
     printf("handler(%d) : Ending handler.\n", sig);
 }
 
-long int fact(int n)
-{
-    if (n == 0 || n == 1) {
-        return 1;
-    }
-    long int pro = 1;
-    while (n != 1) {
-        pro *= n--;
-    }
-    return pro;
-}
-
 int main(int argc, char *argv[])
 {
     sigaction_t action;

programs/tests/t_siginfo.c

@@ -19,7 +19,7 @@ void sig_handler_info(int sig, siginfo_t *siginfo)
         printf("handler(%d, %p) : Correct signal.\n", sig, siginfo);
         printf("handler(%d, %p) : Code : %d\n", sig, siginfo, siginfo->si_code);
         printf("handler(%d, %p) : Exiting\n", sig, siginfo);
-        exit(1);
+        exit(0);
     } else {
         printf("handler(%d, %p) : Wrong signal.\n", sig, siginfo);
     }

programs/tests/t_sigusr.c

@@ -22,7 +22,7 @@ void sig_handler(int sig)
         counter += 1;
 
         if (counter == 2)
-            exit(1);
+            exit(0);
 
     } else {
         printf("handler(%d) : Wrong signal.\n", sig);
@@ -51,5 +51,5 @@ int main(int argc, char *argv[])
     kill(getpid(), SIGUSR2);
 
     while(1) { };
-    return 0;
+    return 1;
 }

programs/tests/t_write_read.c

@@ -0,0 +1,58 @@
+/// @file t_write_read.c
+/// @brief Test consecutive writes
+/// @copyright (c) 2024 This file is distributed under the MIT License.
+/// See LICENSE.md for details.
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strerror.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+
+int main(int argc, char *argv[])
+{
+    char *file = "t_write_read_file";
+    mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
+
+    int fd = creat(file, mode);
+    if (fd < 0) {
+        printf("Failed to open file %s: %s\n", file, strerror(errno));
+        exit(EXIT_FAILURE);
+    }
+
+    if (write(fd, "foo", 3) != 3) {
+        printf("First write to %s failed: %s\n", file, strerror(errno));
+        exit(1);
+    }
+
+    if (write(fd, "bar", 3) != 3) {
+        printf("Second write to %s failed: %s\n", file, strerror(errno));
+        exit(1);
+    }
+
+    close(fd);
+
+    fd = open(file, O_RDONLY, 0);
+    if (fd < 0) {
+        printf("Failed to open file %s: %s\n", file, strerror(errno));
+        exit(1);
+    }
+
+    ssize_t bytes_read;
+    char buf[7];
+    buf[6] = 0;
+    if ((bytes_read = read(fd, &buf, 6)) < 0) {
+        printf("Reading from file %s failed: %s\n", file, strerror(errno));
+        exit(1);
+    }
+
+    if (strcmp(buf, "foobar") != 0) {
+        printf("Unexpected file content: %s\n", buf);
+        exit(1);
+    }
+
+    unlink(file);
+    return 0;
+}