112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* pipeline.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: 2021/12/20 18:08:16 by lperrey ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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static int open_pipes(t_cmd *pipeline[]);
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static int pipeline_find_access(t_cmd *pipeline[], char *path[]);
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static pid_t pipeline_exec(t_cmd *pipeline[], t_all *c);
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int pipeline(t_all *c)
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{
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t_cmd **pipeline;
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int ret;
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pipeline = c->pipeline;
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if (!open_pipes(pipeline))
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return (0);
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if (!pipeline_find_access(pipeline, c->path))
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return (0);
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if (ft_2d_arrlen(pipeline) > 1)
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wait_subshell(pipeline_exec(pipeline, c));
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else
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{
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if (pipeline[0]->error)
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set_last_exit_status(pipeline[0]->error);
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else if (pipeline[0]->builtin_f)
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{
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ret = simple_command_builtin(pipeline[0], c);
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if (ret != EXIT_SUCCESS)
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set_last_exit_status(ret);
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}
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else
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wait_subshell(pipeline_exec(pipeline, c));
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}
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free_pipeline(&c->pipeline);
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return (1);
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}
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static int open_pipes(t_cmd *pipeline[])
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{
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int i;
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int pipes[2];
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i = 0;
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while (pipeline[i] && pipeline[i + 1])
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{
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if (pipe(pipes) == -1)
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return (ft_reti_perror(0, "pipe()"));
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if (pipeline[i]->fd_out == STDOUT_FILENO)
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pipeline[i]->fd_out = pipes[STDOUT_FILENO];
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else
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if (close(pipes[STDOUT_FILENO]) == -1)
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perror("close()");
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if (pipeline[i + 1]->fd_in == STDIN_FILENO)
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pipeline[i + 1]->fd_in = pipes[STDIN_FILENO];
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else
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if (close(pipes[STDIN_FILENO]) == -1)
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perror("close()");
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i++;
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}
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return (1);
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}
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static int pipeline_find_access(t_cmd *pipeline[], char *path[])
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{
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int i;
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i = 0;
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while (pipeline[i])
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{
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if (!pipeline[i]->error && pipeline[i]->argv[0])
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{
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if (!cmd_find_access(pipeline[i], path))
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return (0);
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}
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i++;
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}
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return (1);
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}
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static pid_t pipeline_exec(t_cmd *pipeline[], t_all *c)
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{
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int i;
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int ret;
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i = 0;
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while (pipeline[i])
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{
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if (!pipeline[i]->error && pipeline[i]->argv[0])
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{
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ret = cmd_exec_in_subshell(pipeline[i], c);
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if (ret != EXIT_SUCCESS)
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exit_free(c, ret);
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}
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close_cmd_fd(pipeline[i]);
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i++;
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}
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i -= 1;
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if (pipeline[i]->error)
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set_last_exit_status(pipeline[i]->error);
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return (pipeline[i]->pid);
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}
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