commit abb93d4089bf195a7e78d90a0960ef8e0b119d9a
author Dominik Ermel <dominik.ermel@nordicsemi.no> Fri Jan 07 15:46:45 2022 +0000
committer Carles Cufí <carles.cufi@nordicsemi.no> Mon Mar 20 09:51:10 2023 +0100
tree 7e7654313b2b1ab5862f897692148a227eaf4766
parent ec6122cd98beafe05a0910bac2df09f1688ef4d9

fs: Prevent mounting file system re-using private data

The commit changes the fs_mount to not allow mounting same system,
with the same private data pointer, at two different mount paths.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>

subsys/fs/fs.c

diff --git a/subsys/fs/fs.c b/subsys/fs/fs.c
index f8460dc..94b7c91 100644
--- a/subsys/fs/fs.c
+++ b/subsys/fs/fs.c
@@ -677,6 +677,12 @@
 			continue;
 		}
 
+		CHECKIF(mp->fs_data == itr->fs_data) {
+			LOG_ERR("file system already mounted!!");
+			rc = -EBUSY;
+			goto mount_err;
+		}
+
 		if (strncmp(mp->mnt_point, itr->mnt_point, len) == 0) {
 			LOG_ERR("mount point already exists!!");
 			rc = -EBUSY;