X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=lib%2Flibzfs%2Flibzfs_util.c;h=de4bb72de4f146200c09468f90119b045f2884fc;hb=fc24f7c887a040b6dc9f2a3dd3d5ae0c03a5d639;hp=982a6f05fd97d87fea28ad1bec6b83208f42a34c;hpb=b04c9fc009ca0a0cabb7550625ff273b9edd9729;p=zfs.git

diff --git a/lib/libzfs/libzfs_util.c b/lib/libzfs/libzfs_util.c
index 982a6f0..de4bb72 100644
--- a/lib/libzfs/libzfs_util.c
+++ b/lib/libzfs/libzfs_util.c
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 by Delphix. All rights reserved.
  */
 
 /*
@@ -346,6 +347,7 @@ zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 	switch (error) {
 	case ENXIO:
 	case ENODEV:
+	case EPIPE:
 		zfs_verror(hdl, EZFS_IO, fmt, ap);
 		break;
 
@@ -608,27 +610,13 @@ libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
 static int
 libzfs_module_loaded(const char *module)
 {
-	FILE *f;
-	int result = 0;
-	char name[256];
+	const char path_prefix[] = "/sys/module/";
+	char path[256];
 
-	f = fopen("/proc/modules", "r");
-	if (f == NULL)
-		return -1;
+	memcpy(path, path_prefix, sizeof(path_prefix) - 1);
+	strcpy(path + sizeof(path_prefix) - 1, module);
 
-	while (fgets(name, sizeof(name), f)) {
-		char *c = strchr(name, ' ');
-		if (!c)
-			continue;
-		*c = 0;
-		if (strcmp(module, name) == 0) {
-			result = 1;
-			break;
-		}
-	}
-	fclose(f);
-
-	return result;
+	return (access(path, F_OK) == 0);
 }
 
 int
@@ -1434,7 +1422,8 @@ addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp,
 	 * dataset property,
 	 */
 	if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL ||
-	    (!zfs_prop_user(propname) && !zfs_prop_userquota(propname)))) {
+	    (!zfs_prop_user(propname) && !zfs_prop_userquota(propname) &&
+	    !zfs_prop_written(propname)))) {
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 		    "invalid property '%s'"), propname);
 		return (zfs_error(hdl, EZFS_BADPROP,