mirror of
https://github.com/EnderIce2/Fennix.git
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115 lines
2.1 KiB
C
115 lines
2.1 KiB
C
/*
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This file is part of Fennix Userspace.
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Fennix Userspace is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Userspace is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <signal.h>
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#define MAX_INPUT_SIZE 1024
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#define MAX_ARG_SIZE 100
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void print_prompt()
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{
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printf("$ ");
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fflush(stdout);
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}
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void read_input(char *input)
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{
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if (fgets(input, MAX_INPUT_SIZE, stdin) == NULL)
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{
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perror("fgets");
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exit(EXIT_FAILURE);
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}
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input[strcspn(input, "\n")] = '\0';
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}
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void parse_input(char *input, char **args)
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{
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int i = 0;
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args[i] = strtok(input, " ");
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while (args[i] != NULL)
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{
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i++;
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args[i] = strtok(NULL, " ");
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}
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}
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void execute_command(char **args)
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{
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pid_t pid = fork();
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if (pid < 0)
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{
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perror("fork");
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exit(EXIT_FAILURE);
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}
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else if (pid == 0)
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{
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if (execvp(args[0], args) < 0)
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{
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perror("execvp");
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exit(EXIT_FAILURE);
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}
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}
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else
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{
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int status;
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waitpid(pid, &status, 0);
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if (WIFEXITED(status))
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{
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printf("Child exited with status %d\n", WEXITSTATUS(status));
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}
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else if (WIFSIGNALED(status))
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{
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printf("Child terminated by signal %d\n", WTERMSIG(status));
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}
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}
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}
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void handle_signal(int sig)
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{
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if (sig == SIGINT)
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{
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printf("\nCaught signal %d (SIGINT). Type 'exit' to quit the shell.\n", sig);
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print_prompt();
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fflush(stdout);
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}
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}
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int main()
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{
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char input[MAX_INPUT_SIZE];
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char *args[MAX_ARG_SIZE];
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signal(SIGINT, handle_signal);
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while (1)
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{
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print_prompt();
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read_input(input);
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if (strcmp(input, "exit") == 0)
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break;
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parse_input(input, args);
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if (args[0] != NULL)
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execute_command(args);
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}
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return 0;
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}
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