patch-2.3.29 linux/fs/proc/openprom-dev.c

• Lines: 47
• Date: Thu Nov 18 20:02:57 1999
• Orig file: v2.3.28/linux/fs/proc/openprom-dev.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.28/linux/fs/proc/openprom-dev.c linux/fs/proc/openprom-dev.c
@@ -0,0 +1,46 @@
+/*
+ *  linux/fs/proc/openprom-dev.c
+ *
+ *  handling of devices attached to openpromfs.
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+struct openpromfs_dev *openprom_devices = NULL;
+static ino_t openpromdev_ino = PROC_OPENPROMD_FIRST;
+
+int proc_openprom_regdev(struct openpromfs_dev *d)
+{
+	if (openpromdev_ino == PROC_OPENPROMD_FIRST + PROC_NOPENPROMD)
+		return -1;
+	d->next = openprom_devices;
+	d->inode = openpromdev_ino++;
+	openprom_devices = d;
+	return 0;
+}
+
+int proc_openprom_unregdev(struct openpromfs_dev *d)
+{
+	if (d == openprom_devices) {
+		openprom_devices = d->next;
+	} else if (!openprom_devices)
+		return -1;
+	else {
+		struct openpromfs_dev *p;
+		
+		for (p = openprom_devices; p->next != d && p->next; p = p->next);
+		if (!p->next) return -1;
+		p->next = d->next;
+	}
+	return 0;
+}
+
+#if defined(CONFIG_SUN_OPENPROMFS_MODULE)
+EXPORT_SYMBOL(openprom_devices);
+#endif