[27/41] fs/adfs: newdir: improve directory validation
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Message ID E1ieGvw-0004cn-6M@rmk-PC.armlinux.org.uk
State New
Headers show
Series
  • fs/adfs updates for 5.6
Related show

Commit Message

Russell King Dec. 9, 2019, 11:10 a.m. UTC
Check that the lastmask and reserved fields are all zero, as per the
documentation.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 fs/adfs/dir_f.c | 1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/fs/adfs/dir_f.c b/fs/adfs/dir_f.c
index 196706d581bf..ebe8616ee533 100644
--- a/fs/adfs/dir_f.c
+++ b/fs/adfs/dir_f.c
@@ -127,6 +127,7 @@  static int adfs_f_validate(struct adfs_dir *dir)
 	struct adfs_newdirtail *tail = dir->newtail;
 
 	if (head->startmasseq != tail->endmasseq ||
+	    tail->dirlastmask || tail->reserved[0] || tail->reserved[1] ||
 	    (memcmp(&head->startname, "Nick", 4) &&
 	     memcmp(&head->startname, "Hugo", 4)) ||
 	    memcmp(&head->startname, &tail->endname, 4) ||