File system access library.

src/libdiskfs/fsys.c

@@ -0,0 +1,114 @@
+#include <u.h>
+#include <libc.h>
+#include <thread.h>
+#include <sunrpc.h>
+#include <nfs3.h>
+#include <diskfs.h>
+
+int allowall;
+
+static Fsys *(*opentab[])(Disk*) =
+{
+	fsysopenffs,
+	fsysopenkfs,
+	fsysopenext2,
+	fsysopenfat,
+};
+
+Fsys*
+fsysopen(Disk *disk)
+{
+	int i;
+	Fsys *fsys;
+
+	for(i=0; i<nelem(opentab); i++)
+		if((fsys = (*opentab[i])(disk)) != nil)
+			return fsys;
+	return nil;
+}
+
+Block*
+fsysreadblock(Fsys *fsys, u64int blockno)
+{
+	if(!fsys->_readblock){
+		werrstr("no read dispatch function");
+		return nil;
+	}
+	return (*fsys->_readblock)(fsys, blockno);
+}
+
+int
+fsyssync(Fsys *fsys)
+{
+	if(disksync(fsys->disk) < 0)
+		return -1;
+	if(!fsys->_sync)
+		return 0;
+	return (*fsys->_sync)(fsys);
+}
+
+void
+fsysclose(Fsys *fsys)
+{
+	if(!fsys->_close){
+		fprint(2, "no fsysClose\n");
+		abort();
+	}
+	(*fsys->_close)(fsys);
+}
+
+Nfs3Status
+fsysroot(Fsys *fsys, Nfs3Handle *h)
+{
+	if(!fsys->_root)
+		return Nfs3ErrNxio;
+	return (*fsys->_root)(fsys, h);
+}
+
+Nfs3Status
+fsyslookup(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, char *name, Nfs3Handle *nh)
+{
+	if(!fsys->_lookup)
+		return Nfs3ErrNxio;
+	return (*fsys->_lookup)(fsys, au, h, name, nh);
+}
+
+Nfs3Status
+fsysgetattr(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, Nfs3Attr *attr)
+{
+	if(!fsys->_getattr)
+		return Nfs3ErrNxio;
+	return (*fsys->_getattr)(fsys, au, h, attr);
+}
+
+Nfs3Status
+fsysreaddir(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int count, u64int cookie, uchar **e, u32int *ne, u1int *peof)
+{
+	if(!fsys->_readdir)
+		return Nfs3ErrNxio;
+	return (*fsys->_readdir)(fsys, au, h, count, cookie, e, ne, peof);
+}
+
+Nfs3Status
+fsysreadfile(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int count, u64int offset, uchar **data, u32int *pcount, uchar *peof)
+{
+	if(!fsys->_readfile)
+		return Nfs3ErrNxio;
+	return (*fsys->_readfile)(fsys, au, h, count, offset, data, pcount, peof);
+}
+
+Nfs3Status
+fsysreadlink(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, char **plink)
+{
+	if(!fsys->_readlink)
+		return Nfs3ErrNxio;
+	return (*fsys->_readlink)(fsys, au, h, plink);
+}
+
+Nfs3Status
+fsysaccess(Fsys *fsys, SunAuthUnix *au, Nfs3Handle *h, u32int want, u32int *got, Nfs3Attr *attr)
+{
+	if(!fsys->_access)
+		return Nfs3ErrNxio;
+	return (*fsys->_access)(fsys, au, h, want, got, attr);
+}