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pipex_execute.c
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pipex_execute.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* pipex_execute.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: bsyvasal <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/01/16 18:52:37 by bsyvasal #+# #+# */
/* Updated: 2024/02/27 12:37:56 by bsyvasal ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static void child_execute(t_pipe *data, char **cmd)
{
char *path;
int exit_status;
dup_and_close_fds(data);
closepipe(data);
exit_status = child_builtins(cmd, data);
if (exit_status >= 0)
clean_exit(data, cmd, exit_status);
path = check_cmdpath(cmd[0], data, cmd);
execve(path, cmd, data->envp);
if (path != cmd[0])
free(path);
clean_exit(data, cmd, EXIT_FAILURE);
}
static void execute_fork(int i, t_pipe *data, char **cmd)
{
pid_t pid;
pid = fork();
if (pid == -1)
{
freeall(cmd);
closepipe(data);
errormsg_exit("fork", -1, data);
}
signal(SIGINT, SIG_IGN);
if (pid == 0)
{
free(data->pid);
free(data->history_path);
freeall(data->cmds);
data->history_path = NULL;
data->cmds = NULL;
data->pid = NULL;
signal(SIGINT, exit);
child_execute(data, cmd);
}
data->pid[i] = pid;
}
static char **prepare_command(t_pipe *data, int i)
{
char **cmd;
cmd = NULL;
set_direction(data, i, data->fd);
if (data->status != 0)
return (NULL);
cmd = split_shell_cmd(data->cmds[i], data);
if (!cmd)
msg_freeall_exit("malloc error", NULL, 1, data);
if (!cmd[0])
return (free_return_null(cmd));
if (!cmd[0][0])
{
ft_putstr_fd("bvsh: : command not found\n", 2);
freeall(cmd);
data->status = 127;
return (NULL);
}
return (cmd);
}
/**
* Entrance to execution of the commands
* @param index the command index
*/
int execute(int i, t_pipe *data)
{
char **cmd;
data->status = 0;
if (data->cmdc != 1 && i != data->cmdc - 1 && pipe(data->pipe[i % 2]) == -1)
errormsg_exit("pipe", -1, data);
cmd = prepare_command(data, i);
if (data->cmdc == 1 && cmd && builtins(cmd, data) == 0)
;
else if (cmd)
execute_fork(i, data, cmd);
freeall(cmd);
if (data->fd[0] > 2)
close(data->fd[0]);
if (data->fd[1] > 2)
close(data->fd[1]);
data->fd[0] = -1;
data->fd[1] = -1;
return (data->status);
}