X-Git-Url: https://git.saurik.com/apple/hfs.git/blobdiff_plain/e4cc4424151bb40d5b692bd5de231b3283d1db36..refs/heads/master:/core/hfs_vnops.c

diff --git a/core/hfs_vnops.c b/core/hfs_vnops.c
index 237f071..cf6d106 100644
--- a/core/hfs_vnops.c
+++ b/core/hfs_vnops.c
@@ -5538,10 +5538,6 @@ hfs_vnop_symlink(struct vnop_symlink_args *ap)
 	if (VTOVCB(dvp)->vcbSigWord != kHFSPlusSigWord)
 		return (ENOTSUP);
 
-	/* Check for empty target name */
-	if (ap->a_target[0] == 0)
-		return (EINVAL);
-
 	hfsmp = VTOHFS(dvp);
 	
 	len = strlen(ap->a_target);
@@ -5569,6 +5565,9 @@ hfs_vnop_symlink(struct vnop_symlink_args *ap)
 	    goto out;
 	}
 
+	if (!len)
+		goto out;
+
 #if QUOTA
 	(void)hfs_getinoquota(cp);
 #endif /* QUOTA */
@@ -6063,10 +6062,21 @@ hfs_vnop_readlink(struct vnop_readlink_args *ap)
 	fp = VTOF(vp);
    
 	/* Zero length sym links are not allowed */
-	if (fp->ff_size == 0 || fp->ff_size > MAXPATHLEN) {
+	if (fp->ff_size > MAXPATHLEN) {
 		error = EINVAL;
 		goto exit;
 	}
+
+	/*
+	 * If this is an empty symlink, we are done. The call to uiomove() is
+	 * just for debug and diagnostics.
+	 */
+	if (fp->ff_size == 0) {
+		static uint8_t empty_str[] = {'\0'};
+
+		error = uiomove((caddr_t)empty_str, 0, ap->a_uio);
+		goto exit;
+	}
     
 	/* Cache the path so we don't waste buffer cache resources */
 	if (fp->ff_symlinkptr == NULL) {