64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* ************************************************************************** */
|
|
/* */
|
|
/* ::: :::::::: */
|
|
/* simple_cmd_builtin.c :+: :+: :+: */
|
|
/* +:+ +:+ +:+ */
|
|
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
|
|
/* +#+#+#+#+#+ +#+ */
|
|
/* Created: 2021/11/16 01:57:38 by lperrey #+# #+# */
|
|
/* Updated: 2021/11/18 14:08:56 by lperrey ### ########.fr */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "minishell.h"
|
|
|
|
static int restore_stdio(int stdin_dup, int stdout_dup);
|
|
|
|
int simple_command_builtin(t_cmd *cmd, t_all *c)
|
|
{
|
|
int stdin_dup;
|
|
int stdout_dup;
|
|
|
|
stdin_dup = 0;
|
|
stdout_dup = 0;
|
|
if (cmd->fd_in != STDIN_FILENO)
|
|
{
|
|
stdin_dup = dup(STDIN_FILENO);
|
|
if (stdin_dup == -1)
|
|
return (ft_reti_perror(EXIT_FAILURE, "dup()"));
|
|
if (dup2(cmd->fd_in, STDIN_FILENO) == -1)
|
|
return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
|
|
}
|
|
if (cmd->fd_out != STDOUT_FILENO)
|
|
{
|
|
stdout_dup = dup(STDOUT_FILENO);
|
|
if (stdout_dup == -1)
|
|
return (ft_reti_perror(EXIT_FAILURE, "dup()"));
|
|
if (dup2(cmd->fd_out, STDOUT_FILENO) == -1)
|
|
return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
|
|
}
|
|
c->last_exit_status = cmd->builtin_func(ft_2d_arrlen(cmd->argv), cmd->argv, c);
|
|
if (!restore_stdio(stdin_dup, stdout_dup))
|
|
return (EXIT_FAILURE);
|
|
return (EXIT_SUCCESS);
|
|
}
|
|
|
|
static int restore_stdio(int stdin_dup, int stdout_dup)
|
|
{
|
|
if (stdin_dup)
|
|
{
|
|
if (dup2(stdin_dup, STDIN_FILENO) == -1)
|
|
return (ft_reti_perror(0, "dup2()"));
|
|
if (close(stdin_dup) == -1)
|
|
return (ft_reti_perror(0, "close()"));
|
|
}
|
|
if (stdout_dup)
|
|
{
|
|
if (dup2(stdout_dup, STDOUT_FILENO) == -1)
|
|
return (ft_reti_perror(0, "dup2()"));
|
|
if (close(stdout_dup) == -1)
|
|
return (ft_reti_perror(0, "close()"));
|
|
}
|
|
return (1);
|
|
}
|