New upstream version 5.7.0

1 files changed, 0 insertions, 682 deletions

diff --git a/src/dumm/guest.c b/src/dumm/guest.c
deleted file mode 100644
index 327b86c63..000000000
--- a/src/dumm/guest.c
+++ /dev/null
@@ -1,682 +0,0 @@
-/*
- * Copyright (C) 2008-2009 Tobias Brunner
- * Copyright (C) 2007 Martin Willi
- * HSR Hochschule fuer Technik Rapperswil
- *
- * 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 of the License, or (at your
- * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * 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.
- */
-
-#define _GNU_SOURCE
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <sys/uio.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <dirent.h>
-#include <termios.h>
-#include <stdarg.h>
-
-#include <utils/debug.h>
-#include <collections/linked_list.h>
-
-#include "dumm.h"
-#include "guest.h"
-#include "mconsole.h"
-#include "cowfs.h"
-
-#define PERME (S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)
-#define PERM (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH)
-
-#define MASTER_DIR "master"
-#define DIFF_DIR "diff"
-#define UNION_DIR "union"
-#define ARGS_FILE "args"
-#define PID_FILE "pid"
-#define KERNEL_FILE "linux"
-#define LOG_FILE "boot.log"
-#define NOTIFY_FILE "notify"
-#define PTYS 0
-
-typedef struct private_guest_t private_guest_t;
-
-struct private_guest_t {
-	/** implemented public interface */
-	guest_t public;
-	/** name of the guest */
-	char *name;
-	/** directory of guest */
-	int dir;
-	/** directory name of guest */
-	char *dirname;
-	/** additional args to pass to guest */
-	char *args;
-	/** pid of guest child process */
-	int pid;
-	/** state of guest */
-	guest_state_t state;
-	/** FUSE cowfs instance */
-	cowfs_t *cowfs;
-	/** mconsole to control running UML */
-	mconsole_t *mconsole;
-	/** list of interfaces attached to the guest */
-	linked_list_t *ifaces;
-};
-
-ENUM(guest_state_names, GUEST_STOPPED, GUEST_STOPPING,
-	"STOPPED",
-	"STARTING",
-	"RUNNING",
-	"PAUSED",
-	"STOPPING",
-);
-
-METHOD(guest_t, get_name, char*,
-	private_guest_t *this)
-{
-	return this->name;
-}
-
-METHOD(guest_t, create_iface, iface_t*,
-	private_guest_t *this, char *name)
-{
-	enumerator_t *enumerator;
-	iface_t *iface;
-
-	if (this->state != GUEST_RUNNING)
-	{
-		DBG1(DBG_LIB, "guest '%s' not running, unable to add interface",
-			 this->name);
-		return NULL;
-	}
-
-	enumerator = this->ifaces->create_enumerator(this->ifaces);
-	while (enumerator->enumerate(enumerator, (void**)&iface))
-	{
-		if (streq(name, iface->get_guestif(iface)))
-		{
-			DBG1(DBG_LIB, "guest '%s' already has an interface '%s'",
-				 this->name, name);
-			enumerator->destroy(enumerator);
-			return NULL;
-		}
-	}
-	enumerator->destroy(enumerator);
-
-	iface = iface_create(name, &this->public, this->mconsole);
-	if (iface)
-	{
-		this->ifaces->insert_last(this->ifaces, iface);
-	}
-	return iface;
-}
-
-METHOD(guest_t, destroy_iface, void,
-	private_guest_t *this, iface_t *iface)
-{
-	enumerator_t *enumerator;
-	iface_t *current;
-
-	enumerator = this->ifaces->create_enumerator(this->ifaces);
-	while (enumerator->enumerate(enumerator, (void**)&current))
-	{
-		if (current == iface)
-		{
-			this->ifaces->remove_at(this->ifaces, enumerator);
-			current->destroy(current);
-			break;
-		}
-	}
-	enumerator->destroy(enumerator);
-}
-
-METHOD(guest_t, create_iface_enumerator, enumerator_t*,
-	private_guest_t *this)
-{
-	return this->ifaces->create_enumerator(this->ifaces);
-}
-
-METHOD(guest_t, get_state, guest_state_t,
-	private_guest_t *this)
-{
-	return this->state;
-}
-
-METHOD(guest_t, get_pid, pid_t,
-	private_guest_t *this)
-{
-	return this->pid;
-}
-
-/**
- * write format string to a buffer, and advance buffer position
- */
-static char* write_arg(char **pos, size_t *left, char *format, ...)
-{
-	size_t len;
-	char *res = NULL;
-	va_list args;
-
-	va_start(args, format);
-	len = vsnprintf(*pos, *left, format, args);
-	va_end(args);
-	if (len < *left)
-	{
-		res = *pos;
-		len++;
-		*pos += len + 1;
-		*left -= len + 1;
-	}
-	return res;
-}
-
-METHOD(guest_t, stop, void,
-	private_guest_t *this, idle_function_t idle)
-{
-	if (this->state != GUEST_STOPPED)
-	{
-		this->state = GUEST_STOPPING;
-		this->ifaces->destroy_offset(this->ifaces, offsetof(iface_t, destroy));
-		this->ifaces = linked_list_create();
-		kill(this->pid, SIGINT);
-		while (this->state != GUEST_STOPPED)
-		{
-			if (idle)
-			{
-				idle();
-			}
-			else
-			{
-				usleep(50000);
-			}
-		}
-		unlinkat(this->dir, PID_FILE, 0);
-		this->pid = 0;
-	}
-}
-
-/**
- * save pid in file
- */
-void savepid(private_guest_t *this)
-{
-	FILE *file;
-
-	file = fdopen(openat(this->dir, PID_FILE, O_RDWR | O_CREAT | O_TRUNC,
-						 PERM), "w");
-	if (file)
-	{
-		fprintf(file, "%d", this->pid);
-		fclose(file);
-	}
-}
-
-METHOD(guest_t, start, bool,
-	private_guest_t *this, invoke_function_t invoke, void* data,
-	idle_function_t idle)
-{
-	char buf[2048];
-	char *notify;
-	char *pos = buf;
-	char *args[32];
-	int i = 0;
-	size_t left = sizeof(buf);
-
-	memset(args, 0, sizeof(args));
-
-	if (this->state != GUEST_STOPPED)
-	{
-		DBG1(DBG_LIB, "unable to start guest in state %N", guest_state_names,
-			 this->state);
-		return FALSE;
-	}
-	this->state = GUEST_STARTING;
-
-	notify = write_arg(&pos, &left, "%s/%s", this->dirname, NOTIFY_FILE);
-
-	args[i++] = write_arg(&pos, &left, "nice");
-	args[i++] = write_arg(&pos, &left, "%s/%s", this->dirname, KERNEL_FILE);
-	args[i++] = write_arg(&pos, &left, "root=/dev/root");
-	args[i++] = write_arg(&pos, &left, "rootfstype=hostfs");
-	args[i++] = write_arg(&pos, &left, "rootflags=%s/%s", this->dirname, UNION_DIR);
-	args[i++] = write_arg(&pos, &left, "uml_dir=%s", this->dirname);
-	args[i++] = write_arg(&pos, &left, "umid=%s", this->name);
-	args[i++] = write_arg(&pos, &left, "mconsole=notify:%s", notify);
-	args[i++] = write_arg(&pos, &left, "con=null");
-	if (this->args)
-	{
-		args[i++] = this->args;
-	}
-
-	this->pid = invoke(data, &this->public, args, i);
-	if (!this->pid)
-	{
-		this->state = GUEST_STOPPED;
-		return FALSE;
-	}
-	savepid(this);
-
-	/* open mconsole */
-	this->mconsole = mconsole_create(notify, idle);
-	if (this->mconsole == NULL)
-	{
-		DBG1(DBG_LIB, "opening mconsole at '%s' failed, stopping guest", buf);
-		stop(this, NULL);
-		return FALSE;
-	}
-
-	this->state = GUEST_RUNNING;
-	return TRUE;
-}
-
-METHOD(guest_t, add_overlay, bool,
-	private_guest_t *this, char *path)
-{
-	if (path == NULL)
-	{
-		return FALSE;
-	}
-
-	if (access(path, F_OK) != 0)
-	{
-		if (!mkdir_p(path, PERME))
-		{
-			DBG1(DBG_LIB, "creating overlay for guest '%s' failed: %m",
-				 this->name);
-			return FALSE;
-		}
-	}
-
-	return this->cowfs->add_overlay(this->cowfs, path);
-}
-
-METHOD(guest_t, del_overlay, bool,
-	private_guest_t *this, char *path)
-{
-	return this->cowfs->del_overlay(this->cowfs, path);
-}
-
-METHOD(guest_t, pop_overlay, bool,
-	private_guest_t *this)
-{
-	return this->cowfs->pop_overlay(this->cowfs);
-}
-
-/**
- * Variadic version of the exec function
- */
-static int vexec(private_guest_t *this, void(*cb)(void*,char*,size_t), void *data,
-				 char *cmd, va_list args)
-{
-	char buf[1024];
-	size_t len;
-
-	if (this->mconsole)
-	{
-		len = vsnprintf(buf, sizeof(buf), cmd, args);
-
-		if (len > 0 && len < sizeof(buf))
-		{
-			return this->mconsole->exec(this->mconsole, cb, data, buf);
-		}
-	}
-	return -1;
-}
-
-METHOD(guest_t, exec, int,
-	private_guest_t *this, void(*cb)(void*,char*,size_t), void *data,
-	char *cmd, ...)
-{
-	int res;
-	va_list args;
-	va_start(args, cmd);
-	res = vexec(this, cb, data, cmd, args);
-	va_end(args);
-	return res;
-}
-
-typedef struct {
-	chunk_t buf;
-	void (*cb)(void*,char*);
-	void *data;
-} exec_str_t;
-
-/**
- * callback that combines chunks to a string. if a callback is given, the string
- * is split at newlines and the callback is called for each line.
- */
-static void exec_str_cb(exec_str_t *data, char *buf, size_t len)
-{
-	if (!data->buf.ptr)
-	{
-		data->buf = chunk_alloc(len + 1);
-		memcpy(data->buf.ptr, buf, len);
-		data->buf.ptr[len] = '\0';
-	}
-	else
-	{
-		size_t newlen = strlen(data->buf.ptr) + len + 1;
-		if (newlen > data->buf.len)
-		{
-			data->buf.ptr = realloc(data->buf.ptr, newlen);
-			data->buf.len = newlen;
-		}
-		strncat(data->buf.ptr, buf, len);
-	}
-
-	if (data->cb)
-	{
-		char *nl;
-		while ((nl = strchr(data->buf.ptr, '\n')) != NULL)
-		{
-			*nl++ = '\0';
-			data->cb(data->data, data->buf.ptr);
-			memmove(data->buf.ptr, nl, strlen(nl) + 1);
-		}
-	}
-}
-
-METHOD(guest_t, exec_str, int,
-	private_guest_t *this, void(*cb)(void*,char*), bool lines, void *data,
-	char *cmd, ...)
-{
-	int res;
-	va_list args;
-	va_start(args, cmd);
-	if (cb)
-	{
-		exec_str_t exec = { chunk_empty, NULL, NULL };
-		if (lines)
-		{
-			exec.cb = cb;
-			exec.data = data;
-		}
-		res = vexec(this, (void(*)(void*,char*,size_t))exec_str_cb, &exec, cmd, args);
-		if (exec.buf.ptr)
-		{
-			if (!lines || strlen(exec.buf.ptr) > 0)
-			{
-				/* return the complete string or the remaining stuff in the
-				 * buffer (i.e. when there was no newline at the end) */
-				cb(data, exec.buf.ptr);
-			}
-			chunk_free(&exec.buf);
-		}
-	}
-	else
-	{
-		res = vexec(this, NULL, NULL, cmd, args);
-	}
-	va_end(args);
-	return res;
-}
-
-METHOD(guest_t, sigchild, void,
-	private_guest_t *this)
-{
-	DESTROY_IF(this->mconsole);
-	this->mconsole = NULL;
-	this->state = GUEST_STOPPED;
-}
-
-/**
- * umount the union filesystem
- */
-static bool umount_unionfs(private_guest_t *this)
-{
-	if (this->cowfs)
-	{
-		this->cowfs->destroy(this->cowfs);
-		this->cowfs = NULL;
-		return TRUE;
-	}
-	return FALSE;
-}
-
-/**
- * mount the union filesystem
- */
-static bool mount_unionfs(private_guest_t *this)
-{
-	char master[PATH_MAX];
-	char diff[PATH_MAX];
-	char mount[PATH_MAX];
-
-	if (this->cowfs == NULL)
-	{
-		snprintf(master, sizeof(master), "%s/%s", this->dirname, MASTER_DIR);
-		snprintf(diff, sizeof(diff), "%s/%s", this->dirname, DIFF_DIR);
-		snprintf(mount, sizeof(mount), "%s/%s", this->dirname, UNION_DIR);
-
-		this->cowfs = cowfs_create(master, diff, mount);
-		if (this->cowfs)
-		{
-			return TRUE;
-		}
-	}
-	return FALSE;
-}
-
-/**
- * load args configuration from file
- */
-char *loadargs(private_guest_t *this)
-{
-	FILE *file;
-	char buf[512], *args = NULL;
-
-	file = fdopen(openat(this->dir, ARGS_FILE, O_RDONLY, PERM), "r");
-	if (file)
-	{
-		if (fgets(buf, sizeof(buf), file))
-		{
-			args = strdup(buf);
-		}
-		fclose(file);
-	}
-	return args;
-}
-
-/**
- * save args configuration to file
- */
-bool saveargs(private_guest_t *this, char *args)
-{
-	FILE *file;
-	bool retval = FALSE;
-
-	file = fdopen(openat(this->dir, ARGS_FILE, O_RDWR | O_CREAT | O_TRUNC,
-						 PERM), "w");
-	if (file)
-	{
-		if (fprintf(file, "%s", args) > 0)
-		{
-			retval = TRUE;
-		}
-		fclose(file);
-	}
-	return retval;
-}
-
-METHOD(guest_t, destroy, void,
-	private_guest_t *this)
-{
-	stop(this, NULL);
-	umount_unionfs(this);
-	if (this->dir > 0)
-	{
-		close(this->dir);
-	}
-	this->ifaces->destroy(this->ifaces);
-	free(this->dirname);
-	free(this->args);
-	free(this->name);
-	free(this);
-}
-
-/**
- * generic guest constructor
- */
-static private_guest_t *guest_create_generic(char *parent, char *name,
-											 bool create)
-{
-	char cwd[PATH_MAX];
-	private_guest_t *this;
-
-	INIT(this,
-		.public = {
-			.get_name = _get_name,
-			.get_pid = _get_pid,
-			.get_state = _get_state,
-			.create_iface = _create_iface,
-			.destroy_iface = _destroy_iface,
-			.create_iface_enumerator = _create_iface_enumerator,
-			.start = _start,
-			.stop = _stop,
-			.add_overlay = _add_overlay,
-			.del_overlay = _del_overlay,
-			.pop_overlay = _pop_overlay,
-			.exec = _exec,
-			.exec_str = _exec_str,
-			.sigchild = _sigchild,
-			.destroy = _destroy,
-		}
-	);
-
-	if (*parent == '/' || getcwd(cwd, sizeof(cwd)) == NULL)
-	{
-		if (asprintf(&this->dirname, "%s/%s", parent, name) < 0)
-		{
-			this->dirname = NULL;
-		}
-	}
-	else
-	{
-		if (asprintf(&this->dirname, "%s/%s/%s", cwd, parent, name) < 0)
-		{
-			this->dirname = NULL;
-		}
-	}
-	if (this->dirname == NULL)
-	{
-		free(this);
-		return NULL;
-	}
-	if (create)
-	{
-		mkdir(this->dirname, PERME);
-	}
-	this->dir = open(this->dirname, O_DIRECTORY, PERME);
-	if (this->dir < 0)
-	{
-		DBG1(DBG_LIB, "opening guest directory '%s' failed: %m", this->dirname);
-		free(this->dirname);
-		free(this);
-		return NULL;
-	}
-	this->state = GUEST_STOPPED;
-	this->ifaces = linked_list_create();
-	this->name = strdup(name);
-
-	return this;
-}
-
-/**
- * create a symlink to old called new in our working dir
- */
-static bool make_symlink(private_guest_t *this, char *old, char *new)
-{
-	char cwd[PATH_MAX];
-	char buf[PATH_MAX];
-
-	if (*old == '/' || getcwd(cwd, sizeof(cwd)) == NULL)
-	{
-		snprintf(buf, sizeof(buf), "%s", old);
-	}
-	else
-	{
-		snprintf(buf, sizeof(buf), "%s/%s", cwd, old);
-	}
-	return symlinkat(buf, this->dir, new) == 0;
-}
-
-
-/**
- * create the guest instance, including required dirs and mounts
- */
-guest_t *guest_create(char *parent, char *name, char *kernel,
-					  char *master, char *args)
-{
-	private_guest_t *this = guest_create_generic(parent, name, TRUE);
-
-	if (this == NULL)
-	{
-		return NULL;
-	}
-
-	if (!make_symlink(this, master, MASTER_DIR) ||
-		!make_symlink(this, kernel, KERNEL_FILE))
-	{
-		DBG1(DBG_LIB, "creating master/kernel symlink failed: %m");
-		destroy(this);
-		return NULL;
-	}
-
-	if (mkdirat(this->dir, UNION_DIR, PERME) != 0 ||
-		mkdirat(this->dir, DIFF_DIR, PERME) != 0)
-	{
-		DBG1(DBG_LIB, "unable to create directories for '%s': %m", name);
-		destroy(this);
-		return NULL;
-	}
-
-	this->args = args;
-	if (args && !saveargs(this, args))
-	{
-		destroy(this);
-		return NULL;
-	}
-
-	if (!mount_unionfs(this))
-	{
-		destroy(this);
-		return NULL;
-	}
-
-	return &this->public;
-}
-
-/**
- * load an already created guest
- */
-guest_t *guest_load(char *parent, char *name)
-{
-	private_guest_t *this = guest_create_generic(parent, name, FALSE);
-
-	if (this == NULL)
-	{
-		return NULL;
-	}
-
-	this->args = loadargs(this);
-
-	if (!mount_unionfs(this))
-	{
-		destroy(this);
-		return NULL;
-	}
-
-	return &this->public;
-}
-