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authorChristian Brauner <brauner@kernel.org>2025-02-04 12:27:48 +0100
committerChristian Brauner <brauner@kernel.org>2025-02-12 12:12:27 +0100
commita496dfecbc47253012f1e10d01110428bb9dc118 (patch)
tree82b35b304b1f155f82265b47b610adb174aeaa95 /samples
parent37c4a9590e1efcae7749682239fc22a330d2d325 (diff)
samples/vfs: check whether flag was raised
For string options the kernel will raise the corresponding flag only if the string isn't empty. So check for the flag. Link: https://lore.kernel.org/r/20250204-work-mnt_idmap-statmount-v2-3-007720f39f2e@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'samples')
-rw-r--r--samples/vfs/test-list-all-mounts.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/samples/vfs/test-list-all-mounts.c b/samples/vfs/test-list-all-mounts.c
index 1a02ea4593e3..ce272ded8a79 100644
--- a/samples/vfs/test-list-all-mounts.c
+++ b/samples/vfs/test-list-all-mounts.c
@@ -138,10 +138,11 @@ next:
printf("mnt_id:\t\t%" PRIu64 "\nmnt_parent_id:\t%" PRIu64 "\nfs_type:\t%s\nmnt_root:\t%s\nmnt_point:\t%s\nmnt_opts:\t%s\n\n",
(uint64_t)stmnt->mnt_id,
(uint64_t)stmnt->mnt_parent_id,
- stmnt->str + stmnt->fs_type,
- stmnt->str + stmnt->mnt_root,
- stmnt->str + stmnt->mnt_point,
- stmnt->str + stmnt->mnt_opts);
+ (stmnt->mask & STATMOUNT_FS_TYPE) ? stmnt->str + stmnt->fs_type : "",
+ (stmnt->mask & STATMOUNT_MNT_ROOT) ? stmnt->str + stmnt->mnt_root : "",
+ (stmnt->mask & STATMOUNT_MNT_POINT) ? stmnt->str + stmnt->mnt_point : "",
+ (stmnt->mask & STATMOUNT_MNT_OPTS) ? stmnt->str + stmnt->mnt_opts : "");
+
free(stmnt);
}
}