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| author | Jan Kara <jack@suse.cz> | 2007-12-22 23:03:25 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-12-23 21:54:36 +0100 |
| commit | 22dd483721939b4ea22d5d3925e69112f63c42bc (patch) | |
| tree | 9107a4fec871b4798971ca377c044a9d5f783d42 /fs/dquot.c | |
| parent | ecryptfs: fix string overflow on long cipher names (diff) | |
| download | linux-22dd483721939b4ea22d5d3925e69112f63c42bc.tar.xz linux-22dd483721939b4ea22d5d3925e69112f63c42bc.zip | |
Fix computation of SKB size for quota messages
Fix computation of size of skb needed for quota message. We should use
netlink provided functions and not just an ad-hoc number. Also don't print
the return value from nla_put_foo() as it is always -1.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/dquot.c')
| -rw-r--r-- | fs/dquot.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/dquot.c b/fs/dquot.c index 686ab63a7c6c..b2592abaa713 100644 --- a/fs/dquot.c +++ b/fs/dquot.c @@ -895,9 +895,6 @@ out_lock: #ifdef CONFIG_QUOTA_NETLINK_INTERFACE -/* Size of quota netlink message - actually an upperbound for buffer size */ -#define QUOTA_NL_MSG_SIZE 32 - /* Netlink family structure for quota */ static struct genl_family quota_genl_family = { .id = GENL_ID_GENERATE, @@ -914,11 +911,13 @@ static void send_warning(const struct dquot *dquot, const char warntype) struct sk_buff *skb; void *msg_head; int ret; + int msg_size = 4 * nla_total_size(sizeof(u32)) + + 2 * nla_total_size(sizeof(u64)); /* We have to allocate using GFP_NOFS as we are called from a * filesystem performing write and thus further recursion into * the fs to free some data could cause deadlocks. */ - skb = genlmsg_new(QUOTA_NL_MSG_SIZE, GFP_NOFS); + skb = genlmsg_new(msg_size, GFP_NOFS); if (!skb) { printk(KERN_ERR "VFS: Not enough memory to send quota warning.\n"); @@ -959,7 +958,7 @@ static void send_warning(const struct dquot *dquot, const char warntype) "VFS: Failed to send notification message: %d\n", ret); return; attr_err_out: - printk(KERN_ERR "VFS: Failed to compose quota message: %d\n", ret); + printk(KERN_ERR "VFS: Not enough space to compose quota message!\n"); err_out: kfree_skb(skb); } |