signals.h File Reference

#include <termios.h>
#include <sys/ioctl.h>
#include <signal.h>
#include "shell.h"

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Classes
struct	s_signal_context

Macros
#define	_GNU_SOURCE

Typedefs
typedef struct s_signal_context	t_signal_context

Functions
t_signal_context *	get_context (t_ms_data *data)
void	signal_reset_prompt (int signo, siginfo_t *info, void *ucontext)
void	set_signals_interactive (t_ms_data *data)
void	signal_print_newline (int signal)
void	sigquit_ignore (void)
void	set_signals_noninteractive (void)
void	handle_sigint_heredoc (int signo)
int	ft_perror (char *str)
int	is_external_command_running (void)

Variables
volatile sig_atomic_t	g_heredoc_interrupted

Macro Definition Documentation

_GNU_SOURCE

#define _GNU_SOURCE

Definition at line 15 of file signals.h.

Typedef Documentation

t_signal_context

typedef struct s_signal_context t_signal_context

Function Documentation

ft_perror()

int ft_perror

(

char *

str

)

Definition at line 18 of file exit_status_utils.c.

{
    perror (str);
    exit(EXIT_FAILURE);
}

get_context()

t_signal_context * get_context

(

t_ms_data *

data

)

Definition at line 21 of file signals_utils.c.

{
    static t_signal_context *context = NULL;
 
    if (data != NULL)
    {
        if (!context)
        {
            context = malloc(sizeof(t_signal_context));
            if (!context)
                return (NULL);
        }
        context->data_cxt = data;
    }
    return (context);
}

References s_signal_context::data_cxt.

Referenced by free_signal_context().

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handle_sigint_heredoc()

void handle_sigint_heredoc

(

int

signo

)

Definition at line 38 of file signals_utils.c.

{
    (void)signo;
    g_heredoc_interrupted = 1;
}

References g_heredoc_interrupted.

Referenced by setup_sigint_handler().

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is_external_command_running()

int is_external_command_running

(

void

)

Definition at line 44 of file signals_utils.c.

{
    pid_t   child_pid;
 
    child_pid = waitpid(-1, NULL, WNOHANG);
    if (child_pid == 0)
        return (1);
    else
        return (0);
}

Referenced by signal_reset_prompt().

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set_signals_interactive()

void set_signals_interactive

(

t_ms_data *

data

)

Definition at line 43 of file signals.c.

{
    struct sigaction    sa;
 
    (void)data;
    sa.sa_sigaction = signal_reset_prompt;
    sa.sa_flags = SA_RESTART | SA_SIGINFO;
    sigemptyset(&sa.sa_mask);
    sigaction(SIGINT, &sa, NULL);
}

References signal_reset_prompt().

Referenced by main_loop().

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set_signals_noninteractive()

void set_signals_noninteractive

(

void

)

Definition at line 66 of file signals.c.

{
    struct sigaction    sa;
 
    sa.sa_handler = SIG_IGN;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(SIGQUIT, &sa, NULL);
}

Referenced by main_loop().

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signal_print_newline()

void signal_print_newline

(

int

signal

)

Definition at line 26 of file signals.c.

{
    (void)signal;
    write(STDOUT_FILENO, "\n", 1);
    rl_on_new_line();
}

signal_reset_prompt()

void signal_reset_prompt	(	int	signo,
		siginfo_t *	info,
		void *	ucontext
	)

Definition at line 54 of file signals.c.

{
    (void)signo;
    (void)info;
    (void)ucontext;
    write(STDOUT_FILENO, "\n", 1);
    rl_on_new_line();
    rl_replace_line("", 0);
    if (!is_external_command_running())
        rl_redisplay();
}

References is_external_command_running().

Referenced by set_signals_interactive().

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sigquit_ignore()

void sigquit_ignore

(

void

)

Definition at line 33 of file signals.c.

{
    struct sigaction    a;
 
    sigemptyset(&a.sa_mask);
    a.sa_flags = 0;
    a.sa_handler = SIG_IGN;
    sigaction(SIGQUIT, &a, NULL);
}

Variable Documentation

g_heredoc_interrupted

volatile sig_atomic_t g_heredoc_interrupted

extern

Definition at line 27 of file redirect_heredoc.c.

Referenced by handle_heredoc_interruption(), handle_sigint_heredoc(), redirect_here_doc(), and write_heredoc_lines().