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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* e_externs.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <sys/wait.h>
#include <libft.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include "b_export_next.h"
#include "d_define.h"
#include "f_fail.h"
#include "m_redirs.h"
#include "s_com.h"
#include "s_destroy.h"
#include "s_line.h"
#include "s_struct.h"
#include "u_path.h"
#include "u_utils.h"
static void
e_extern_child(const char *fullpath,
t_com *ptr,
t_msh *msh)
{
if (execve(fullpath, ptr->argv, msh->envp) == -1)
{
f_exec(fullpath, ptr->bin);
u_eof_fd(msh->fd);
s_com_destroy(&msh->com);
s_line_clear(&msh->curr);
s_destroy(msh);
exit(errno);
}
}
static void
e_export_env_fork(t_com *ptr,
t_msh *msh)
{
char **re_ptr;
re_ptr = ptr->env_fork;
while (*re_ptr != NULL)
{
b_export_with_equals(*re_ptr, msh);
re_ptr++;
}
}
static void
e_exec_path(const char fullpath[],
t_com *ptr,
t_msh *msh)
{
pid_t pid;
int32_t status;
if ((pid = fork()) == 0)
{
if (ptr->env_fork != NULL)
e_export_env_fork(ptr, msh);
e_extern_child(fullpath, ptr, msh);
}
else if (pid < 0)
{
/* TODO: handle fork failed */
}
else
{
while (wait(&status) != pid)
;
msh->ret = WEXITSTATUS(status);
}
}
void e_extern(t_com *ptr, t_msh *msh)
{
char fullpath[PATH_MAX];
fullpath[0] = C_NUL;
if (ft_ischarset("./", ptr->bin[0]) == TRUE)
{
ft_strlcpy(fullpath, ptr->bin, PATH_MAX);
e_exec_path(fullpath, ptr, msh);
return ;
}
else
{
u_search_in_path(fullpath, ptr->bin, PATH_MAX, msh);
e_exec_path(fullpath, ptr, msh);
}
}
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