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authorLukas Czerner <lczerner@redhat.com>2012-10-16 11:39:07 +0200
committerSteven Whitehouse <swhiteho@redhat.com>2012-11-07 09:41:37 +0000
commit3a238adefb8c5b8cb8cde0ce689d513306176ff4 (patch)
treece36637e3391d9437bc19773885aa0955941962a /fs/gfs2
parent73738a77f42c2d7f53fd61f73272c9dd6f520897 (diff)
GFS2: Require user to provide argument for FITRIM
When the fstrim_range argument is not provided by user in FITRIM ioctl we should just return EFAULT and not promoting bad behaviour by filling the structure in kernel. Let the user deal with it. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/rgrp.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 43d1a20bdbe..b6bbf718d6c 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1270,11 +1270,7 @@ int gfs2_fitrim(struct file *filp, void __user *argp)
if (!blk_queue_discard(q))
return -EOPNOTSUPP;
- if (argp == NULL) {
- r.start = 0;
- r.len = ULLONG_MAX;
- r.minlen = 0;
- } else if (copy_from_user(&r, argp, sizeof(r)))
+ if (copy_from_user(&r, argp, sizeof(r)))
return -EFAULT;
ret = gfs2_rindex_update(sdp);
@@ -1323,7 +1319,7 @@ int gfs2_fitrim(struct file *filp, void __user *argp)
out:
r.len = trimmed << 9;
- if (argp && copy_to_user(argp, &r, sizeof(r)))
+ if (copy_to_user(argp, &r, sizeof(r)))
return -EFAULT;
return ret;