X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/2d21ac55c334faf3a56e5634905ed6987fc787d4..ca66cea69e6e866fd781ae2260d9474bdd48f2ca:/bsd/dev/memdev.c?ds=sidebyside

diff --git a/bsd/dev/memdev.c b/bsd/dev/memdev.c
index 307ad77d9..f957be33c 100644
--- a/bsd/dev/memdev.c
+++ b/bsd/dev/memdev.c
@@ -172,6 +172,7 @@ int mdevCMajor = -1;
 static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p, int is_char);
 dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys);
 dev_t mdevlookup(int devid);
+void mdevremoveall(void);
 
 static	int mdevclose(__unused dev_t dev, __unused int flags, 
 					  __unused int devtype, __unused struct proc *p) {
@@ -609,3 +610,24 @@ dev_t mdevlookup(int devid) {
 	if(!(mdev[devid].mdFlags & mdInited)) return -1;	/* This one hasn't been defined */
 	return mdev[devid].mdBDev;							/* Return the device number */
 }
+
+void mdevremoveall(void) {
+
+	int i;
+
+	for(i = 0; i < 16; i++) {
+		if(!(mdev[i].mdFlags & mdInited)) continue;	/* Ignore unused mdevs */
+
+		devfs_remove(mdev[i].mdbdevb);			/* Remove the block device */
+		devfs_remove(mdev[i].mdcdevb);			/* Remove the character device */
+
+		mdev[i].mdBase = 0;				/* Clear the mdev's storage */
+		mdev[i].mdSize = 0;
+		mdev[i].mdSecsize = 0;
+		mdev[i].mdFlags = 0;
+		mdev[i].mdBDev = 0;
+		mdev[i].mdCDev = 0;
+		mdev[i].mdbdevb = 0;
+		mdev[i].mdcdevb = 0;
+	}
+}