checked in first draft of "Dynamic Uml Mesh Modeler"

2007-07-24 14:22:56 +00:00
parent c019260e01
commit 5c7da9d402
6 changed files with 618 additions and 0 deletions
@@ -0,0 +1,228 @@
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <library.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#include "dumm.h"
+
+/**
+ * show usage information (program arguments)
+ */
+static void usage()
+{
+	printf("Usage:\n");
+	printf("  --dir|-d <path>            set working dir to <path>\n");
+	printf("  --help|-h                  show this help\n");
+}
+
+/**
+ * show usage information (commandline arguments)
+ */
+static void help()
+{
+	printf("start name=<name> [options]   start a guest named <name>\n");
+	printf("                              additional options:\n");
+	printf("                                kernel=<uml-kernel>\n");
+	printf("                                master=<read-only root files>\n");
+	printf("                                memory=<guest memory in MB>\n");
+	printf("guests                        list running guests\n");
+	printf("help                          show this help\n");
+	printf("quit                          kill quests and exit\n");
+}
+
+/**
+ * start an UML guest
+ */
+static void start(umli_t *umli, char *line)
+{
+	enum {
+		NAME = 0,
+		MASTER,
+		KERNEL,
+		MEMORY,
+	};
+	char *const opts[] = {
+		[NAME] = "name",
+		[MASTER] = "master",
+		[KERNEL] = "kernel",
+		[MEMORY] = "memory",
+		NULL
+	};
+	char *value;
+	char *name = NULL;
+	char *kernel = NULL;
+	char *master = NULL;
+	int mem = 0;
+	
+	while (TRUE)
+	{
+		switch (getsubopt(&line, opts, &value))
+		{
+			case NAME:
+				name = value;
+				continue;
+			case MASTER:
+				master = value;
+				continue;
+			case KERNEL:
+				kernel = value;
+				continue;
+			case MEMORY:
+				if (value)
+				{
+					mem = atoi(value);
+				}
+				continue;
+			default:
+				break;
+		}
+		break;
+	}
+	if (name == NULL)
+	{
+		printf("option 'name' is required.\n");
+		help();
+		return;
+	}
+	if (kernel == NULL)
+	{
+		kernel = "./linux";
+	}
+	if (master == NULL)
+	{
+		master = "master";
+	}
+	if (mem == 0)
+	{
+		mem = 128;
+	}
+	
+	if (umli->start_guest(umli, name, kernel, master, mem))
+	{
+		printf("starting guest '%s'\n", name);
+	}
+	else
+	{
+		printf("starting guest '%s' failed\n", name);
+	}
+}
+
+/**
+ * list running UML guests
+ */
+static void guests(umli_t *umli)
+{
+	iterator_t *iterator;
+	guest_t *guest;
+	
+	iterator = umli->create_guest_iterator(umli);
+	while (iterator->iterate(iterator, (void**)&guest))
+	{
+		printf("%s\n", guest->get_name(guest));
+	}
+	iterator->destroy(iterator);
+}
+
+/**
+ * main routine, parses args and reads from console
+ */
+int main(int argc, char *argv[])
+{
+	umli_t *umli;
+	char *line = NULL;
+
+	while (TRUE)
+	{
+		struct option options[] = {
+			{"dir", 1, 0, 0},
+			{"help", 0, 0, 0},
+			{0, 0, 0, 0}
+		};
+		
+		switch (getopt_long(argc, argv, "d:h", options, NULL)) 
+		{
+			case -1:
+				break;
+			case 'd':
+				if (chdir(optarg))
+				{
+					printf("changing to directory '%s' failed.\n", optarg);
+					return 1;
+				}
+				continue;
+			case 'h':
+				usage();
+				return 0;
+			default:
+				usage();
+				return 1;
+		}
+		break;
+	}
+	
+	umli = umli_create();
+
+	while (TRUE)
+	{
+		enum {
+			QUIT = 0,
+			HELP,
+			START,
+			GUESTS,
+		};
+		char *const opts[] = {
+			[QUIT] = "quit",
+			[HELP] = "help",
+			[START] = "start",
+			[GUESTS] = "guests",
+			NULL
+		};
+		char *pos, *value;
+		
+		free(line);
+		line = readline("dumm# ");
+		if (line == NULL || *line == '\0')
+		{
+			continue;
+		}
+		
+		add_history(line);
+		pos = line;
+		while (*pos != '\0')
+		{
+			if (*pos == ' ')
+			{
+				*pos = ',';
+			}
+			pos++;
+		}
+		pos = line;
+		switch (getsubopt(&pos, opts, &value))
+		{
+			case QUIT:
+				free(line);
+				break;
+			case HELP:
+				help();
+				continue;
+			case START:
+				start(umli, pos);
+				continue;
+			case GUESTS:
+				guests(umli);
+				continue;
+			default:
+				printf("command unknown: '%s'\n", line);
+				continue;
+		}
+		break;
+	}
+	umli->destroy(umli);
+	clear_history();
+	return 0;
+}
+