141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
#include "../../includes/minishell.h"
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void close_pipe(t_cmd *cmd)
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{
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int i;
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i = 0;
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close(0);
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while (cmd->s_cmds[i])// && !cmd->s_cmds[i]->last)
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{
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//close(cmd->s_cmds[i]->last_pipe[0]);
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//close(cmd->s_cmds[i]->last_pipe[1]);
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close(cmd->s_cmds[i]->fd[0]);
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close(cmd->s_cmds[i]->fd[1]);
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//close(cmd->s_cmds[i]->pipe[0]);
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//close(cmd->s_cmds[i]->pipe[1]);
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i++;
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}
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}
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int wait_exit(t_cmd *cmd)
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{
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int i;
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int ret;
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int exit_pid;
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int status;
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i = 0;
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ret = 0;
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exit_pid = 1;
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while (exit_pid > 0)
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{
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i = 0;
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exit_pid = wait(&status);
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//dprintf(2, "exit_pid= %d\n", exit_pid);
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while (exit_pid != -1 && cmd->s_cmds[i])
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{
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if (exit_pid == cmd->s_cmds[i]->child)
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{
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close(cmd->s_cmds[i]->fd[0]);
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close(cmd->s_cmds[i]->fd[1]);
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}
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i++;
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}
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}
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//dprintf(2, "return wait_exit\n");
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return (ret);
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}
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void exec_cmd(t_cmd *cmd, char **env, int *fdpipe)
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{
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// int ret;
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cmd->current_s_cmd->child = fork();
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if (cmd->current_s_cmd->child == 0)
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{
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if (fdpipe)
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close(fdpipe[0]);
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dup2(cmd->current_s_cmd->fd[0], 0);
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dup2(cmd->current_s_cmd->fd[1], 1);
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close(cmd->current_s_cmd->fd[0]);
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close(cmd->current_s_cmd->fd[1]);
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if (-1 == execve(cmd->current_s_cmd->cmd, cmd->current_s_cmd->args, env))
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dprintf(2, "exec error\n");
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exit(0);
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}
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}
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void execute(t_cmd *cmd, char **env)
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{
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//save in/out
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int fdpipe[2];
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//int ret;
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int fdout;
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int tmpin = dup(0);
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int tmpout= dup(1);
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int fdin;
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int i;
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i = 0;
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//close(0);
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//close(1);
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//if (cmd->current_s_cmd->infile)//set the initial input
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// fdin = open(cmd->current_s_cmd->infile, O_APPEND);
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//fdin = open(cmd->current_s_cmd->infile, O_RDONLY);
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//else if (cmd->infile)
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// fdin = open(cmd->infile, O_RDONLY);
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//else
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fdin=dup(tmpin);
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while(cmd->current_s_cmd)
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{
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if (i == cmd->nb_s_cmd - 1)
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{
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// Last simple command
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cmd->current_s_cmd->last = 1;
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if (cmd->current_s_cmd->outfile)
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fdout = open(cmd->current_s_cmd->outfile, O_RDWR | O_CREAT | O_APPEND, 0666);
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else if(cmd->outfile)
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fdout=open(cmd->outfile, O_RDWR | O_CREAT | O_TRUNC, 0666);
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else// Use default output
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fdout=dup(tmpout);
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cmd->current_s_cmd->fd[0] = fdin;
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cmd->current_s_cmd->fd[1] = fdout;
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exec_cmd(cmd, env, 0);
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}
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else
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{
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cmd->current_s_cmd->last = 0;
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pipe(fdpipe);
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//cmd->current_s_cmd->pipe[0] = fdpipe[0];
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//cmd->current_s_cmd->pipe[1] = fdpipe[1];
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cmd->current_s_cmd->fd[0] = fdin;//entree current
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cmd->current_s_cmd->fd[1] = fdpipe[1];//sortie current
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cmd->current_s_cmd->pipe[0] = fdpipe[0];//entree prochaine cmd
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cmd->current_s_cmd->pipe[1] = fdpipe[1];//sortie current
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cmd->s_cmds[i + 1]->last_pipe[0] = fdpipe[0];
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cmd->s_cmds[i + 1]->last_pipe[1] = fdpipe[1];
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//fdout=fdpipe[1];
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fdin=fdpipe[0];
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exec_cmd(cmd, env, fdpipe);
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close(cmd->current_s_cmd->fd[0]);
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}
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close(cmd->current_s_cmd->pipe[1]);
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i++;
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cmd->current_s_cmd = cmd->s_cmds[i];
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} //while
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//restore in/out defaults
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close_pipe(cmd);
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wait_exit(cmd);
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//wait(0);
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dup2(tmpin,0);
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dup2(tmpout,1);
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close(tmpin);
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close(tmpout);
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// Wait for last command
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} // execute
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