64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* subshell_wait.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: 2021/12/21 17:29:39 by lperrey ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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static void handle_signal_status(int wstatus);
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static int handle_wait_error(void);
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void wait_subshell(pid_t last_cmd_pid)
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{
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int wstatus;
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int ret;
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wstatus = 0;
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if (last_cmd_pid > 0)
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{
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if (waitpid(last_cmd_pid, &wstatus, 0) == -1)
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perror("waitpid()");
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if (WIFEXITED(wstatus))
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set_last_exit_status(WEXITSTATUS(wstatus));
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if (WIFSIGNALED(wstatus))
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handle_signal_status(wstatus);
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}
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ret = 0;
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while (ret != -1)
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{
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ret = wait(&wstatus);
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if (ret == -1)
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ret = handle_wait_error();
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}
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if (get_last_exit_status() == EXIT_SIGNAL + SIGSEGV)
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ft_putstr_fd("Segmentation fault (core dumped)\n", STDERR_FILENO);
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}
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static void handle_signal_status(int wstatus)
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{
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int signum;
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signum = WTERMSIG(wstatus);
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set_last_exit_status(EXIT_SIGNAL + signum);
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if (signum == SIGINT)
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write(STDIN_FILENO, "\n", 1);
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}
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static int handle_wait_error(void)
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{
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if (errno == ECHILD)
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return (-1);
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else if (errno == EINTR)
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return (0);
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else
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perror("wait()");
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return (-1);
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}
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