* [PATCH] ksmbd: use kasprintf() in ksmbd_vfs_xattr_stream_name()
@ 2021-07-07 10:15 ` Dan Carpenter
2021-07-08 0:35 ` Namjae Jeon
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2021-07-07 10:15 UTC (permalink / raw)
To: Namjae Jeon
Cc: Sergey Senozhatsky, Steve French, Hyunchul Lee, linux-cifs,
kernel-janitors
Simplify the code by using kasprintf(). This also silences a Smatch
warning:
fs/ksmbd/vfs.c:1725 ksmbd_vfs_xattr_stream_name()
warn: inconsistent indenting
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Not tested.
fs/ksmbd/vfs.c | 27 ++++++---------------------
1 file changed, 6 insertions(+), 21 deletions(-)
diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
index 0f5a4fb8215f..d3bab9235e9a 100644
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -1697,35 +1697,20 @@ ssize_t ksmbd_vfs_casexattr_len(struct user_namespace *user_ns,
int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name,
size_t *xattr_stream_name_size, int s_type)
{
- int stream_name_size;
- char *xattr_stream_name_buf;
- char *type;
- int type_len;
+ char *type, *buf;
if (s_type == DIR_STREAM)
type = ":$INDEX_ALLOCATION";
else
type = ":$DATA";
- type_len = strlen(type);
- stream_name_size = strlen(stream_name);
- *xattr_stream_name_size = stream_name_size + XATTR_NAME_STREAM_LEN + 1;
- xattr_stream_name_buf = kmalloc(*xattr_stream_name_size + type_len,
- GFP_KERNEL);
- if (!xattr_stream_name_buf)
+ buf = kasprintf(GFP_KERNEL, "%s%s%s",
+ XATTR_NAME_STREAM, stream_name, type);
+ if (!buf)
return -ENOMEM;
- memcpy(xattr_stream_name_buf, XATTR_NAME_STREAM, XATTR_NAME_STREAM_LEN);
-
- if (stream_name_size) {
- memcpy(&xattr_stream_name_buf[XATTR_NAME_STREAM_LEN],
- stream_name, stream_name_size);
- }
- memcpy(&xattr_stream_name_buf[*xattr_stream_name_size - 1], type, type_len);
- *xattr_stream_name_size += type_len;
-
- xattr_stream_name_buf[*xattr_stream_name_size - 1] = '\0';
- *xattr_stream_name = xattr_stream_name_buf;
+ *xattr_stream_name = buf;
+ *xattr_stream_name_size = strlen(buf) + 1;
return 0;
}
--
2.30.2
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