3baf91afb3
+ deleted envp comments + WIP Macro exit status + TODO : Invalid free of environ in readline
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* simple_cmd_builtin.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/11/16 01:57:38 by lperrey #+# #+# */
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/* Updated: 2021/11/27 11:07:19 by lperrey ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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static int restore_stdio(int stdin_dup, int stdout_dup);
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int simple_command_builtin(t_cmd *cmd, t_all *c)
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{
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int stdin_dup;
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int stdout_dup;
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stdin_dup = 0;
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stdout_dup = 0;
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if (cmd->fd_in != STDIN_FILENO)
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{
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stdin_dup = dup(STDIN_FILENO);
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if (stdin_dup == -1)
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return (ft_reti_perror(EXIT_FAILURE, "dup()"));
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if (dup2(cmd->fd_in, STDIN_FILENO) == -1)
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return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
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}
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if (cmd->fd_out != STDOUT_FILENO)
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{
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stdout_dup = dup(STDOUT_FILENO);
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if (stdout_dup == -1)
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return (ft_reti_perror(EXIT_FAILURE, "dup()"));
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if (dup2(cmd->fd_out, STDOUT_FILENO) == -1)
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return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
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}
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set_last_exit_status(cmd->builtin_func(ft_2d_arrlen(cmd->argv), cmd->argv, c));
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if (!restore_stdio(stdin_dup, stdout_dup))
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return (EXIT_FAILURE);
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return (EXIT_SUCCESS);
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}
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static int restore_stdio(int stdin_dup, int stdout_dup)
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{
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if (stdin_dup)
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{
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if (dup2(stdin_dup, STDIN_FILENO) == -1)
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return (ft_reti_perror(0, "dup2()"));
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if (close(stdin_dup) == -1)
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return (ft_reti_perror(0, "close()"));
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}
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if (stdout_dup)
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{
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if (dup2(stdout_dup, STDOUT_FILENO) == -1)
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return (ft_reti_perror(0, "dup2()"));
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if (close(stdout_dup) == -1)
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return (ft_reti_perror(0, "close()"));
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}
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return (1);
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}
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