--- /dev/null
+/* ply-terminal-session.c - api for spawning a program in pseudo-terminal
+ *
+ * Copyright (C) 2007 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by: Ray Strode <rstrode@redhat.com>
+ */
+#include "config.h"
+#include "ply-terminal-session.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "ply-terminal.h"
+#include "ply-utils.h"
+
+struct _ply_terminal_session
+{
+ ply_terminal_t *terminal;
+ char **argv;
+};
+
+ply_terminal_session_t *
+ply_terminal_session_new (const char * const *argv)
+
+{
+ ply_terminal_session_t *session;
+
+ assert (argv != NULL);
+
+ session = calloc (1, sizeof (ply_terminal_session_t));
+ session->argv = ply_copy_string_array (argv);
+ session->terminal = ply_terminal_new ();
+
+ return session;
+}
+
+void
+ply_terminal_session_free (ply_terminal_session_t *session)
+{
+ if (session == NULL)
+ return;
+
+ ply_free_string_array (session->argv);
+ ply_terminal_free (session->terminal);
+ free (session);
+}
+
+static bool
+ply_terminal_session_open_console (ply_terminal_session_t *session)
+{
+ int fd;
+ const char *terminal_name;
+
+ terminal_name = ply_terminal_get_device_name (session->terminal);
+
+ fd = open (terminal_name, O_RDONLY);
+
+ if (fd < 0)
+ return false;
+
+ assert (fd == STDIN_FILENO);
+ assert (ttyname (fd) != NULL);
+ assert (strcmp (ttyname (fd), terminal_name) == 0);
+
+ fd = open (terminal_name, O_WRONLY);
+
+ if (fd < 0)
+ return false;
+
+ assert (fd == STDOUT_FILENO);
+ assert (ttyname (fd) != NULL);
+ assert (strcmp (ttyname (fd), terminal_name) == 0);
+
+ fd = open (terminal_name, O_WRONLY);
+
+ if (fd < 0)
+ return false;
+
+ assert (fd == STDERR_FILENO);
+ assert (ttyname (fd) != NULL);
+ assert (strcmp (ttyname (fd), terminal_name) == 0);
+
+ return true;
+}
+
+static bool
+ply_terminal_session_execute (ply_terminal_session_t *session,
+ bool look_in_path)
+{
+ ply_close_all_fds ();
+
+ if (!ply_terminal_session_open_console (session))
+ return false;
+
+ if (look_in_path)
+ execvp (session->argv[0], session->argv);
+ else
+ execv (session->argv[0], session->argv);
+
+ return false;
+}
+
+bool
+ply_terminal_session_run (ply_terminal_session_t *session,
+ ply_terminal_session_flags_t flags)
+{
+ int pid;
+ bool run_in_parent, look_in_path;
+
+ assert (session != NULL);
+
+ run_in_parent = (flags & PLY_TERMINAL_SESSION_FLAGS_RUN_IN_PARENT) != 0;
+ look_in_path = (flags & PLY_TERMINAL_SESSION_FLAGS_LOOK_IN_PATH) != 0;
+
+ if (!ply_terminal_create_device (session->terminal))
+ return false;
+
+ pid = fork ();
+
+ if (pid < 0)
+ return false;
+
+ if (((pid == 0) && run_in_parent) ||
+ ((pid != 0) && !run_in_parent))
+ return true;
+
+ ply_terminal_session_execute (session, look_in_path);
+
+ _exit (errno);
+}
+
+int
+ply_terminal_session_get_fd (ply_terminal_session_t *session)
+{
+ assert (session != NULL);
+
+ return ply_terminal_get_fd (session->terminal);
+}
+
+#ifdef PLY_TERMINAL_SESSION_ENABLE_TEST
+
+#include <stdio.h>
+
+int
+main (int argc,
+ char **argv)
+{
+ ply_terminal_session_t *session;
+ uint8_t byte;
+ int exit_code;
+ ply_terminal_session_flags_t flags;
+
+ exit_code = 0;
+
+ session = ply_terminal_session_new ((const char * const *) (argv + 1));
+
+ flags = PLY_TERMINAL_SESSION_FLAGS_RUN_IN_PARENT;
+ flags |= PLY_TERMINAL_SESSION_FLAGS_LOOK_IN_PATH;
+
+ if (!ply_terminal_session_run (session, flags))
+ {
+ perror ("could not start terminal session");
+ return errno;
+ }
+
+ while (read (ply_terminal_session_get_fd (session),
+ &byte, sizeof (byte)) == 1)
+ printf ("%c", byte);
+
+ ply_terminal_session_free (session);
+
+ return exit_code;
+}
+
+#endif /* PLY_TERMINAL_SESSION_ENABLE_TEST */
+/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
--- /dev/null
+/* ply-terminal-session.h - api for spawning a program in pseudo-terminal
+ *
+ * Copyright (C) 2007 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written By: Ray Strode <rstrode@redhat.com>
+ */
+#ifndef PLY_TERMINAL_SESSION_H
+#define PLY_TERMINAL_SESSION_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <unistd.h>
+
+typedef struct _ply_terminal_session ply_terminal_session_t;
+
+typedef enum
+{
+ PLY_TERMINAL_SESSION_FLAGS_NONE = 0x0,
+ PLY_TERMINAL_SESSION_FLAGS_RUN_IN_PARENT = 0x1,
+ PLY_TERMINAL_SESSION_FLAGS_LOOK_IN_PATH = 0x2
+} ply_terminal_session_flags_t;
+
+#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
+ply_terminal_session_t *ply_terminal_session_new (const char * const *argv);
+
+void ply_terminal_session_free (ply_terminal_session_t *session);
+bool ply_terminal_session_run (ply_terminal_session_t *session,
+ ply_terminal_session_flags_t flags);
+int ply_terminal_session_get_fd (ply_terminal_session_t *session);
+#endif
+
+#endif /* PLY_TERMINAL_SESSION_H */
+/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
projects / thirdparty / plymouth.git / commitdiff
