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terminal.c
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terminal.c
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#include "minishell.h"
#include "terminal.h"
pid_t shell_pid;
struct termios shell_ctl;
void terminal_init() {
shell_pid = getpid();
is_terminal = isatty(STDIN_FILENO);
if (is_terminal) {
setpgid(shell_pid, shell_pid);
tcsetpgrp(STDIN_FILENO, shell_pid);
tcgetattr(STDIN_FILENO, &shell_ctl);
// On remplace les handlers par défaut de ces signaux
// (arrêt du process) qui vont être lancés quand on
// donne le contrôle du terminal aux jobs.
Signal(SIGTTIN, SIG_IGN);
Signal(SIGTTOU, SIG_IGN);
}
}
void terminal_init_control(TerminalControl* ctl) {
*ctl = shell_ctl;
}
void terminal_give_control(pid_t pid, TerminalControl* ctl) {
if (is_terminal) {
setpgid(pid, pid);
tcgetattr(STDIN_FILENO, &shell_ctl);
tcsetpgrp(STDIN_FILENO, pid);
tcsetattr(STDIN_FILENO, TCSADRAIN, ctl);
}
}
void terminal_take_back_control(TerminalControl* ctl) {
if (is_terminal) {
tcgetattr(STDIN_FILENO, ctl);
tcsetpgrp(STDIN_FILENO, shell_pid);
tcsetattr(STDIN_FILENO, TCSADRAIN, &shell_ctl);
}
}