9os

commit 11d57f50f23ea8fffe3bdabd37f9ecf8c9e1b3f4
parent 4fb757020d858b0826a8a23e2191ed90da5d72fd
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Sun, 25 Oct 2020 22:20:52 +0100

os9/proc: Add newspace()

Change-Id: I2213977d0eabb045241474f49a45249520cc1afa

Diffstat:
M
include/os9/os9.h
 | 
4
++--
M
src/os9/proc.c
 | 
26
++++++++++++++++++++++++++

2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/include/os9/os9.h b/include/os9/os9.h
@@ -44,7 +44,7 @@ typedef struct qid Qid;
 typedef struct dir Dir;
 typedef struct mach Mach;
 typedef struct map Map;
-typedef struct namespace Namespace;
+typedef struct nspace Nspace;
 typedef struct fdset Fdset;
 typedef struct ref Ref;
 
@@ -193,7 +193,7 @@ struct task {
 	Map *text;
 	Map *data;
 	Map *stack;
-	Namespace *ns;
+	Nspace *ns;
 	Fdset *fds;
 };
 
diff --git a/src/os9/proc.c b/src/os9/proc.c
@@ -2,9 +2,22 @@
 
 #include <limits.h>
 
+struct nspace {
+	Ref ref;
+	mutex_t m;
+	struct mpoint mpoints[NR_MPOINTS];
+};
+
 static Task tasktab[NR_TASKS];
 
 static void
+initref(Ref *rp)
+{
+	rp->m = 0;
+	rp->cnt = 0;
+}
+
+static void
 incref(Ref *rp)
 {
 	lock(&rp->m);
@@ -82,3 +95,16 @@ newslot(void)
 
 	return (tp != &tasktab[NR_TASKS]) ? tp : NULL;
 }
+
+static Nspace *
+newspace(Nspace *from)
+{
+	Nspace *ns;
+
+	ns = alloc(sizeof(*ns));
+	if (from)
+		*ns = *from;
+	initref(&ns->ref);
+
+	return ns;
+}