100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_exec.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: rparodi <rparodi@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/03/15 14:23:10 by rparodi #+# #+# */
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/* Updated: 2024/04/24 09:17:46 by rparodi ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../includes/pipex.h"
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void ft_close(t_utils *utils, int *fd)
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{
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if (utils->fd_output > 2)
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close(utils->fd_output);
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if (utils->fd_input > 2)
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close(utils->fd_input);
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if (fd[0] > 2)
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close(fd[0]);
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if (fd[1] > 2)
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close(fd[1]);
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}
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int ft_open_fds(t_utils *utils, int *fd, int cmd_count)
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{
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if (cmd_count == 1)
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{
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close(fd[0]);
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close(utils->fd_output);
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dup2(utils->fd_input, 0);
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close(utils->fd_input);
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dup2(fd[1], 1);
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close(fd[1]);
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}
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else if (cmd_count == 2)
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{
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close(fd[1]);
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close(utils->fd_input);
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dup2(fd[0], 0);
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close(fd[0]);
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dup2(utils->fd_output, 1);
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close(utils->fd_output);
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}
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else
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{
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close(fd[0]);
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close(fd[1]);
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}
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return (cmd_count);
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}
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void ft_wait(pid_t pid1, pid_t pid2, t_utils *utils, int *fd)
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{
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if (pid1 != 0 || pid2 != 0)
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ft_open_fds(utils, fd, 0);
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waitpid(pid1, NULL, 0);
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waitpid(pid2, NULL, 0);
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}
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void ft_pipex(t_utils *utils)
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{
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int fd[2];
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pid_t pid1;
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pid_t pid2;
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pipe(fd);
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pid1 = fork();
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if (pid1 == -1)
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ft_exit(utils, NULL, 1, "Fork failed!\n");
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if (pid1 == 0)
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{
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ft_open_fds(utils, fd, 1);
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ft_exec_cmd(utils, utils->check_first_cmd, utils->first_cmd_args);
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ft_close(utils, fd);
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}
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pid2 = fork();
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if (pid2 == -1)
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ft_exit(utils, NULL, 1, "Fork failed!\n");
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if (pid2 == 0)
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{
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ft_open_fds(utils, fd, 2);
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ft_exec_cmd(utils, utils->check_second_cmd, utils->second_cmd_args);
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ft_close(utils, fd);
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}
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ft_wait(pid1, pid2, utils, fd);
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}
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void ft_exec_cmd(t_utils *utils, char *cmd, char *cmd_args)
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{
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const char **args = (const char **)ft_split(cmd_args, ' ');
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if (execve(cmd, (char *const *)args, (char *const *)utils->envp) == -1)
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{
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ft_free_strs((char **)args);
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ft_exit(utils, NULL, 1, "Execution of the command failed!\n");
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}
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}
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