Initial revision
diff --git a/src/libthread/id.c b/src/libthread/id.c
new file mode 100644
index 0000000..727798d
--- /dev/null
+++ b/src/libthread/id.c
@@ -0,0 +1,135 @@
+#include "threadimpl.h"
+
+int
+threadid(void)
+{
+ return _threadgetproc()->thread->id;
+}
+
+int
+threadpid(int id)
+{
+ int pid;
+ Proc *p;
+ Thread *t;
+
+ if (id < 0)
+ return -1;
+ if (id == 0)
+ return _threadgetproc()->pid;
+ lock(&_threadpq.lock);
+ for (p = _threadpq.head; p->next; p = p->next){
+ lock(&p->lock);
+ for (t = p->threads.head; t; t = t->nextt)
+ if (t->id == id){
+ pid = p->pid;
+ unlock(&p->lock);
+ unlock(&_threadpq.lock);
+ return pid;
+ }
+ unlock(&p->lock);
+ }
+ unlock(&_threadpq.lock);
+ return -1;
+}
+
+int
+threadsetgrp(int ng)
+{
+ int og;
+ Thread *t;
+
+ t = _threadgetproc()->thread;
+ og = t->grp;
+ t->grp = ng;
+ return og;
+}
+
+int
+threadgetgrp(void)
+{
+ return _threadgetproc()->thread->grp;
+}
+
+void
+threadsetname(char *name)
+{
+/*
+ int fd, n;
+ char buf[128], *s;
+*/
+ Proc *p;
+ Thread *t;
+
+ p = _threadgetproc();
+ t = p->thread;
+ if (t->cmdname)
+ free(t->cmdname);
+ t->cmdname = strdup(name);
+/* Plan 9 only
+ if(p->nthreads == 1){
+ snprint(buf, sizeof buf, "#p/%d/args", getpid());
+ if((fd = open(buf, OWRITE)) >= 0){
+ snprint(buf, sizeof buf, "%s [%s]", argv0, name);
+ n = strlen(buf)+1;
+ s = strchr(buf, ' ');
+ if(s)
+ *s = '\0';
+ write(fd, buf, n);
+ close(fd);
+ }
+ }
+*/
+}
+
+char*
+threadgetname(void)
+{
+ return _threadgetproc()->thread->cmdname;
+}
+
+void**
+threaddata(void)
+{
+ return &_threadgetproc()->thread->udata[0];
+}
+
+void**
+procdata(void)
+{
+ return &_threadgetproc()->udata;
+}
+
+static Lock privlock;
+static int privmask = 1;
+
+int
+tprivalloc(void)
+{
+ int i;
+
+ lock(&privlock);
+ for(i=0; i<NPRIV; i++)
+ if(!(privmask&(1<<i))){
+ privmask |= 1<<i;
+ unlock(&privlock);
+ return i;
+ }
+ unlock(&privlock);
+ return -1;
+}
+
+void
+tprivfree(int i)
+{
+ if(i < 0 || i >= NPRIV)
+ abort();
+ lock(&privlock);
+ privmask &= ~(1<<i);
+}
+
+void**
+tprivaddr(int i)
+{
+ return &_threadgetproc()->thread->udata[i];
+}
