Messages in this thread Patch in this message | | | Date | Wed, 08 Apr 2009 15:09:29 +0800 | From | Li Zefan <> | Subject | [PATCH 6/6] ecryptfs: use memdup_user() |
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Remove open-coded memdup_user().
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> --- fs/ecryptfs/miscdev.c | 15 +++++---------- 1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c index a67fea6..dda3c58 100644 --- a/fs/ecryptfs/miscdev.c +++ b/fs/ecryptfs/miscdev.c @@ -418,18 +418,13 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf, if (count == 0) goto out; - data = kmalloc(count, GFP_KERNEL); - if (!data) { - printk(KERN_ERR "%s: Out of memory whilst attempting to " - "kmalloc([%zd], GFP_KERNEL)\n", __func__, count); + + data = memdup_user(buf, count); + if (IS_ERR(data)) { + printk(KERN_ERR "%s: memdup_user returned error [%ld]\n", + __func__, PTR_ERR(data)); goto out; } - rc = copy_from_user(data, buf, count); - if (rc) { - printk(KERN_ERR "%s: copy_from_user returned error [%d]\n", - __func__, rc); - goto out_free; - } sz = count; i = 0; switch (data[i++]) { -- 1.5.4.rc3
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