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authorLi Zefan <lizf@cn.fujitsu.com>2009-04-08 03:09:29 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2009-04-20 23:02:51 -0400
commitfd56d242b3b80b6f2ca174272b20029aae61df75 (patch)
tree57f51b3471dc6fdb8bcb92bff5bfdc8f4c441cd1 /fs/ecryptfs
parenta9482ebcdedbc5872ed34a266e6a45c35116f264 (diff)
ecryptfs: use memdup_user()
Remove open-coded memdup_user(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ecryptfs')
-rw-r--r--fs/ecryptfs/miscdev.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index a67fea655f49..dda3c58eefc0 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,
418 418
419 if (count == 0) 419 if (count == 0)
420 goto out; 420 goto out;
421 data = kmalloc(count, GFP_KERNEL); 421
422 if (!data) { 422 data = memdup_user(buf, count);
423 printk(KERN_ERR "%s: Out of memory whilst attempting to " 423 if (IS_ERR(data)) {
424 "kmalloc([%zd], GFP_KERNEL)\n", __func__, count); 424 printk(KERN_ERR "%s: memdup_user returned error [%ld]\n",
425 __func__, PTR_ERR(data));
425 goto out; 426 goto out;
426 } 427 }
427 rc = copy_from_user(data, buf, count);
428 if (rc) {
429 printk(KERN_ERR "%s: copy_from_user returned error [%d]\n",
430 __func__, rc);
431 goto out_free;
432 }
433 sz = count; 428 sz = count;
434 i = 0; 429 i = 0;
435 switch (data[i++]) { 430 switch (data[i++]) {