frzysk/42_minishell
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This commit is contained in:
mcolonna 2024-05-16 18:11:08 +02:00
parent 75bbeed855
commit d165229b59
2 changed files with 67 additions and 46 deletions
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3
include/include.h
View file

@ -6,7 +6,7 @@
/* By: jschaft <cecile.schaft@orange.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/04/23 14:15:12 by mcolonna #+# #+# */
/* Updated: 2024/05/16 17:30:01 by mcolonna ### ########.fr */
/* Updated: 2024/05/16 17:34:49 by mcolonna ### ########.fr */
/* */
/* ************************************************************************** */
@ -77,7 +77,6 @@ void minishell_error(const char *msg);
// Call to write the error and exit the program.
void fatal_error(const char *msg);
///// PATH /////
// Get the PATH values.

110
src/exec_command.c
View file

@ -6,7 +6,7 @@
/* By: jschaft <cecile.schaft@orange.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/04/24 13:48:00 by jschaft #+# #+# */
/* Updated: 2024/05/16 16:11:30 by mcolonna ### ########.fr */
/* Updated: 2024/05/16 18:10:48 by mcolonna ### ########.fr */
/* */
/* ************************************************************************** */
@ -14,7 +14,7 @@
// Execute the call with stdin = in and stdout = out.
// Find the program in $PATH
static int execute_call(t_memclass mc, t_call call, int in, int out,
static int execute_call(t_memclass mc, t_call call, int inout[2],
char *const envp[])
{
char **const path = get_path(envp);
@ -24,14 +24,14 @@ static int execute_call(t_memclass mc, t_call call, int in, int out,
program_path = search_path(mc, (const char **)path, call.program);
if (!program_path)
return (minishell_error(str_join(fatal_error, mc,
"command not found: ", str_join(fatal_error, mc,
call.program, "\n"))), 127);
"command not found: ", str_join(fatal_error, mc,
call.program, "\n"))), 127);
pid = fork();
if (pid < 0)
return (minishell_error("errno"), errno);
if (pid == 0)
{
if (dup2(in, 0) < 0 || dup2(out, 1) < 0)
if (dup2(inout[0], 0) < 0 || dup2(inout[1], 1) < 0)
return (minishell_error("errno"), errno);
execve(program_path, call.argv, envp);
return (minishell_error("errno"), errno);
@ -39,39 +39,10 @@ static int execute_call(t_memclass mc, t_call call, int in, int out,
return (0);
}
int execute_command(t_memclass mc, t_command command, char *const envp[])
void close_all_pipes(int nb_calls, t_pipes *pipes)
{
t_pipes *pipes;
int i;
int nb_calls;
int r;
int i;
// get nb calls
nb_calls = 0;
while (command.calls[nb_calls].program != NULL)
nb_calls++;
// create pipes
pipes = mem_alloc(err_remember, mc, sizeof(t_pipes) * (nb_calls + 1));
if (err_get())
return (minishell_error("errno"), errno);
i = 0;
pipes[i].pipe[0] = command.input_fd;
while (++i < nb_calls)
if (pipe(pipes[i].pipe) < 0)
return (minishell_error("errno"), errno);
pipes[i].pipe[1] = command.output_fd;
// call all programs
i = -1;
while (++i < nb_calls)
{
r = execute_call(mc, command.calls[i], pipes[i].pipe[0], pipes[i + 1].pipe[1], envp);
if (r)
return (r);
}
// close all
i = 0;
if (pipes[i].pipe[0] != 0)
if (close(pipes[i].pipe[0]) < 0)
@ -86,15 +57,66 @@ int execute_command(t_memclass mc, t_command command, char *const envp[])
if (pipes[i].pipe[1] != 1)
if (close(pipes[i].pipe[1]) < 0)
minishell_error("errno");
}
// wait the end of all programs
i = nb_calls;
tf_printf("before\n");
while (wait(NULL) != -1)
tf_printf("in\n");
tf_printf("after\n"); // TODO debug
if (errno != ECHILD)
static int create_pipes(
t_memclass mc, t_command command, t_pipes **dest, int nb_calls)
{
int i;
*dest = mem_alloc(err_remember, mc, sizeof(t_pipes) * (nb_calls + 1));
if (err_get())
return (minishell_error("errno"), errno);
i = 0;
(*dest)[i].pipe[0] = command.input_fd;
while (++i < nb_calls)
if (pipe((*dest)[i].pipe) < 0)
return (minishell_error("errno"), errno);
(*dest)[i].pipe[1] = command.output_fd;
return (0);
}
static int exec_each_call(t_memclass mc, t_command command, t_pipes *pipes,
char *const envp[])
{
int i;
int r;
int nb_calls;
int inout[2];
nb_calls = 0;
while (command.calls[nb_calls].program != NULL)
nb_calls++;
i = -1;
while (++i < nb_calls)
{
inout[0] = pipes[i].pipe[0];
inout[1] = pipes[i + 1].pipe[1];
r = execute_call(mc, command.calls[i], inout, envp);
if (r)
return (r);
}
return (r);
}
// TODO fix error blocks when pipe
int execute_command(t_memclass mc, t_command command, char *const envp[])
{
t_pipes *pipes;
int nb_calls;
int r;
nb_calls = 0;
while (command.calls[nb_calls].program != NULL)
nb_calls++;
r = create_pipes(mc, command, &pipes, nb_calls);
if (r)
return (r);
exec_each_call(mc, command, pipes, envp);
close_all_pipes(nb_calls, pipes);
while (wait(NULL) != -1)
;
if (errno != ECHILD)
return (minishell_error("errno"), errno);
return (0);
}