package org.ibex.nestedvm;
import org.ibex.nestedvm.util.*;
-// HACK: This is ugly, this stuff needs to be in org.ibex.util or something
-import org.ibex.classgen.util.Sort;
import java.io.*;
import java.util.*;
import java.net.*;
if(!exec) {
gs = defaultGS;
String userdir = Platform.getProperty("user.dir");
- String nvroot = Platform.getProperty("nestedvm.root");
- cwd = "";
- if(userdir != null && nvroot == null) {
- if(userdir.startsWith("/") && File.separatorChar == '/') {
- cwd = userdir.substring(1);
- } else {
- Vector vec = new Vector();
- File root = HostFS.hostRootDir();
- String s = new File(userdir).getAbsolutePath();
- File d = new File(s);
- System.err.println(s);
- System.err.println(d);
- while(!d.equals(root)) {
- System.err.println("Got " + d.getName());
- vec.addElement(d.getName());
- if((s = d.getParent()) == null) break;
- d = new File(s);
- }
- if(s != null)
- for(int i=vec.size()-1;i>=0;i--) cwd += (String) vec.elementAt(i) + (i==0?"":"/");
- }
- }
+ cwd = userdir == null ? null : gs.mapHostPath(userdir);
+ if(cwd == null) cwd = "/";
+ cwd = cwd.substring(1);
}
}
}
String[] createEnv(String[] extra) {
- String[] defaults = new String[6];
+ String[] defaults = new String[7];
int n=0;
if(extra == null) extra = new String[0];
+ String tmp;
if(!envHas("USER",extra) && Platform.getProperty("user.name") != null)
defaults[n++] = "USER=" + Platform.getProperty("user.name");
- if(!envHas("HOME",extra) && Platform.getProperty("user.home") != null)
- defaults[n++] = "HOME=" + Platform.getProperty("user.home");
+ if(!envHas("HOME",extra) && (tmp=Platform.getProperty("user.home")) != null && (tmp=gs.mapHostPath(tmp)) != null)
+ defaults[n++] = "HOME=" + tmp;
+ if(!envHas("TMPDIR",extra) && (tmp=Platform.getProperty("java.io.tmpdir")) != null && (tmp=gs.mapHostPath(tmp)) != null)
+ defaults[n++] = "TMPDIR=" + tmp;
if(!envHas("SHELL",extra)) defaults[n++] = "SHELL=/bin/sh";
if(!envHas("TERM",extra) && !win32Hacks) defaults[n++] = "TERM=vt100";
if(!envHas("TZ",extra)) defaults[n++] = "TZ=" + posixTZ();
case SYS_fchown: return sys_fchown(a,b,c);
case SYS_chmod: return sys_chmod(a,b,c);
case SYS_fchmod: return sys_fchmod(a,b,c);
+ case SYS_umask: return sys_umask(a);
default: return super._syscall(syscall,a,b,c,d,e,f);
}
private int sys_fchmod(int fd, int uid, int gid) {
return 0;
}
-
+ private int sys_umask(int mask) {
+ return 0;
+ }
private int sys_access(int cstring, int mode) throws ErrnoException, ReadFaultException {
// FEATURE: sys_access
if(p == buf.length) break OUTER;
n = s.read(buf,p,buf.length-p);
}
- int arg;
- for(arg=2;arg<p;arg++) if(buf[arg] == ' ') break;
- int cmdEnd = arg;
- while(arg < p && buf[arg] == ' ') arg++;
+ int cmdStart = 2;
+ for(;cmdStart<p;cmdStart++) if(buf[cmdStart]!=' ') break;
+ if(cmdStart == p) throw new ErrnoException(ENOEXEC);
+ int argStart = cmdStart;
+ for(;argStart<p;argStart++) if(buf[argStart] == ' ') break;
+ int cmdEnd = argStart;
+ while(argStart < p && buf[argStart] == ' ') argStart++;
String[] command = new String[] {
- new String(buf,2,cmdEnd),
- arg < p ? new String(buf,arg,p-arg) : null
+ new String(buf,cmdStart,cmdEnd-cmdStart),
+ argStart < p ? new String(buf,argStart,p-argStart) : null
};
gs.execCache.put(path,new GlobalState.CacheEnt(mtime,size,command));
return execScript(path,command,argv,envp);
}
public int execScript(String path, String[] command, String[] argv, String[] envp) throws ErrnoException {
- String[] newArgv = new String[argv.length + command[1] != null ? 2 : 1];
+ String[] newArgv = new String[argv.length-1 + (command[1] != null ? 3 : 2)];
int p = command[0].lastIndexOf('/');
newArgv[0] = p == -1 ? command[0] : command[0].substring(p+1);
- p = 1;
+ newArgv[1] = "/" + path;
+ p = 2;
if(command[1] != null) newArgv[p++] = command[1];
- newArgv[p++] = "/" + path;
for(int i=1;i<argv.length;i++) newArgv[p++] = argv[i];
+ if(p != newArgv.length) throw new Error("p != newArgv.length");
+ System.err.println("Execing: " + command[0]);
+ for(int i=0;i<newArgv.length;i++) System.err.println("execing [" + i + "] " + newArgv[i]);
return exec(command[0],newArgv,envp);
}
public GlobalState(int maxProcs, boolean defaultMounts) {
tasks = new UnixRuntime[maxProcs+1];
if(defaultMounts) {
- addMount("/",new HostFS());
+ File root = null;
+ if(Platform.getProperty("nestedvm.root") != null) {
+ root = new File(Platform.getProperty("nestedvm.root"));
+ if(!root.isDirectory()) throw new IllegalArgumentException("nestedvm.root is not a directory");
+ } else {
+ String cwd = Platform.getProperty("user.dir");
+ root = Platform.getRoot(new File(cwd != null ? cwd : "."));
+ }
+
+ addMount("/",new HostFS(root));
+
+ if(Platform.getProperty("nestedvm.root") == null) {
+ File[] roots = Platform.listRoots();
+ for(int i=0;i<roots.length;i++) {
+ String name = roots[i].getPath();
+ if(name.endsWith(File.separator))
+ name = name.substring(0,name.length()-1);
+ if(name.length() == 0 || name.indexOf('/') != -1) continue;
+ addMount("/" + name.toLowerCase(),new HostFS(roots[i]));
+ }
+ }
+
addMount("/dev",new DevFS());
+ addMount("/resource",new ResourceFS());
}
}
+ public String mapHostPath(String s) { return mapHostPath(new File(s)); }
+ public String mapHostPath(File f) {
+ MP[] list;
+ FS root;
+ synchronized(this) { mps = this.mps; root = this.root; }
+ if(!f.isAbsolute()) f = new File(f.getAbsolutePath());
+ for(int i=mps.length;i>=0;i--) {
+ FS fs = i == mps.length ? root : mps[i].fs;
+ String path = i == mps.length ? "" : mps[i].path;
+ if(!(fs instanceof HostFS)) continue;
+ File fsroot = ((HostFS)fs).getRoot();
+ if(!fsroot.isAbsolute()) fsroot = new File(fsroot.getAbsolutePath());
+ if(f.getPath().startsWith(fsroot.getPath())) {
+ char sep = File.separatorChar;
+ String child = f.getPath().substring(fsroot.getPath().length());
+ if(sep != '/') {
+ char[] child_ = child.toCharArray();
+ for(int j=0;j<child_.length;j++) {
+ if(child_[j] == '/') child_[j] = sep;
+ else if(child_[j] == sep) child_[j] = '/';
+ }
+ child = new String(child_);
+ }
+ String mapped = "/" + (path.length()==0?"":path+"/") + child;
+ return mapped;
+ }
+ }
+ return null;
+ }
+
static class MP implements Sort.Comparable {
public MP(String path, FS fs) { this.path = path; this.fs = fs; }
public String path;
System.arraycopy(mps,0,newMPS,index,mps.length-index-1);
mps = newMPS;
}
-
+
private Object fsop(int op, UnixRuntime r, String normalizedPath, int arg1, int arg2) throws ErrnoException {
int pl = normalizedPath.length();
if(pl != 0) {
public abstract void unlink(UnixRuntime r, String path) throws ErrnoException;
}
- // chroot support should go in here if it is ever implemented chroot support in here
+ // chroot support should go in here if it is ever implemented
private String normalizePath(String path) {
boolean absolute = path.startsWith("/");
int cwdl = cwd.length();
char[] in = new char[path.length()+1];
char[] out = new char[in.length + (absolute ? -1 : cwd.length())];
+ path.getChars(0,path.length(),in,0);
int inp=0, outp=0;
if(absolute) {
outp = cwdl;
}
- path.getChars(0,path.length(),in,0);
while(in[inp] != 0) {
if(inp != 0) {
while(in[inp] != 0 && in[inp] != '/') { out[outp++] = in[inp++]; }
}
if(outp > 0 && out[outp-1] == '/') outp--;
//System.err.println("normalize: " + path + " -> " + new String(out,0,outp) + " (cwd: " + cwd + ")");
- return new String(out,0,outp);
+ int outStart = out[0] == '/' ? 1 : 0;
+ return new String(out,outStart,outp - outStart);
}
FStat hostFStat(final File f, Object data) {
protected File root;
public File getRoot() { return root; }
- static File hostRootDir() {
- if(Platform.getProperty("nestedvm.root") != null) {
- File f = new File(Platform.getProperty("nestedvm.root"));
- if(f.isDirectory()) return f;
- // fall through to case below
- }
- String cwd = Platform.getProperty("user.dir");
- File f = new File(cwd != null ? cwd : ".");
- if(!f.exists()) throw new Error("Couldn't get File for cwd");
- f = new File(f.getAbsolutePath());
- while(f.getParent() != null) f = new File(f.getParent());
- // This works around a bug in some versions of ClassPath
- if(f.getPath().length() == 0) f = new File("/");
- return f;
- }
-
private File hostFile(String path) {
char sep = File.separatorChar;
if(sep != '/') {
return new File(root,path);
}
- public HostFS() { this(hostRootDir()); }
public HostFS(String root) { this(new File(root)); }
public HostFS(File root) { this.root = root; }
-
public FD open(UnixRuntime r, String path, int flags, int mode) throws ErrnoException {
final File f = hostFile(path);
return r.hostFSOpen(f,flags,mode,this);
public void mkdir(UnixRuntime r, String path, int mode) throws ErrnoException { throw new ErrnoException(EROFS); }
public void unlink(UnixRuntime r, String path) throws ErrnoException { throw new ErrnoException(EROFS); }
- }
+ }
+
+
+ public static class ResourceFS extends FS {
+ final InodeCache inodes = new InodeCache(500);
+
+ public FStat lstat(UnixRuntime r, String path) throws ErrnoException { return stat(r,path); }
+ public void mkdir(UnixRuntime r, String path, int mode) throws ErrnoException { throw new ErrnoException(EROFS); }
+ public void unlink(UnixRuntime r, String path) throws ErrnoException { throw new ErrnoException(EROFS); }
+
+ FStat connFStat(final URLConnection conn) {
+ return new FStat() {
+ public int type() { return S_IFREG; }
+ public int nlink() { return 1; }
+ public int mode() { return 0444; }
+ public int size() { return conn.getContentLength(); }
+ public int mtime() { return (int)(conn.getDate() / 1000); }
+ public int inode() { return inodes.get(conn.getURL().toString()); }
+ public int dev() { return devno; }
+ };
+ }
+
+ public FStat stat(UnixRuntime r, String path) throws ErrnoException {
+ URL url = r.getClass().getResource("/" + path);
+ if(url == null) return null;
+ try {
+ return connFStat(url.openConnection());
+ } catch(IOException e) {
+ throw new ErrnoException(EIO);
+ }
+ }
+
+ public FD open(UnixRuntime r, String path, int flags, int mode) throws ErrnoException {
+ if((flags & ~3) != 0) {
+ if(STDERR_DIAG)
+ System.err.println("WARNING: Unsupported flags passed to ResourceFS.open(\"" + path + "\"): " + toHex(flags & ~3));
+ throw new ErrnoException(ENOTSUP);
+ }
+ if((flags&3) != RD_ONLY) throw new ErrnoException(EROFS);
+ URL url = r.getClass().getResource("/" + path);
+ if(url == null) return null;
+ try {
+ final URLConnection conn = url.openConnection();
+ Seekable.InputStream si = new Seekable.InputStream(conn.getInputStream());
+ return new SeekableFD(si,flags) { protected FStat _fstat() { return connFStat(conn); } };
+ } catch(FileNotFoundException e) {
+ if(e.getMessage() != null && e.getMessage().indexOf("Permission denied") >= 0) throw new ErrnoException(EACCES);
+ return null;
+ } catch(IOException e) { throw new ErrnoException(EIO); }
+ }
+ }
}
projects / nestedvm.git / blobdiff