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authorTyler Hicks <tyhicks@linux.vnet.ibm.com>2009-09-16 19:04:20 -0500
committerTyler Hicks <tyhicks@linux.vnet.ibm.com>2009-09-23 09:10:34 -0500
commit96a7b9c2f5df899f302ade45cf17ad753fe130fd (patch)
tree096b67dbaad8e795344554994e28433a1e5b5de1 /fs/ecryptfs/mmap.c
parent3891959846709a19f76628e33478cd85edb0e79f (diff)
eCryptfs: Propagate vfs_read and vfs_write return codes
Errors returned from vfs_read() and vfs_write() calls to the lower filesystem were being masked as -EINVAL. This caused some confusion to users who saw EINVAL instead of ENOSPC when the disk was full, for instance. Also, the actual bytes read or written were not accessible by callers to ecryptfs_read_lower() and ecryptfs_write_lower(), which may be useful in some cases. This patch updates the error handling logic where those functions are called in order to accept positive return codes indicating success. Cc: Eric Sandeen <esandeen@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: ecryptfs-devel@lists.launchpad.net Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Diffstat (limited to 'fs/ecryptfs/mmap.c')
-rw-r--r--fs/ecryptfs/mmap.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 05772aeaa8f..df4ce99d059 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -396,9 +396,11 @@ static int ecryptfs_write_inode_size_to_header(struct inode *ecryptfs_inode)
rc = ecryptfs_write_lower(ecryptfs_inode, file_size_virt, 0,
sizeof(u64));
kfree(file_size_virt);
- if (rc)
+ if (rc < 0)
printk(KERN_ERR "%s: Error writing file size to header; "
"rc = [%d]\n", __func__, rc);
+ else
+ rc = 0;
out:
return rc;
}