summaryrefslogtreecommitdiff
path: root/fs/ecryptfs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ecryptfs')
-rw-r--r--fs/ecryptfs/crypto.c2
-rw-r--r--fs/ecryptfs/ecryptfs_kernel.h2
-rw-r--r--fs/ecryptfs/inode.c13
-rw-r--r--fs/ecryptfs/miscdev.c28
-rw-r--r--fs/ecryptfs/read_write.c22
5 files changed, 19 insertions, 48 deletions
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index cd62d75b2cc0..e2832bc7869a 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -1906,9 +1906,9 @@ int ecryptfs_get_tfm_and_mutex_for_cipher_name(struct crypto_blkcipher **tfm,
goto out;
}
}
- mutex_unlock(&key_tfm_list_mutex);
(*tfm) = key_tfm->key_tfm;
(*tfm_mutex) = &key_tfm->key_tfm_mutex;
out:
+ mutex_unlock(&key_tfm_list_mutex);
return rc;
}
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 951ee33a022d..c15c25745e05 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -660,8 +660,6 @@ int ecryptfs_get_tfm_and_mutex_for_cipher_name(struct crypto_blkcipher **tfm,
int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
struct ecryptfs_auth_tok **auth_tok,
char *sig);
-int ecryptfs_write_zeros(struct file *file, pgoff_t index, int start,
- int num_zeros);
int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data,
loff_t offset, size_t size);
int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode,
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 0a1397335a8e..c92cc1c00aae 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -37,17 +37,11 @@ static struct dentry *lock_parent(struct dentry *dentry)
{
struct dentry *dir;
- dir = dget(dentry->d_parent);
+ dir = dget_parent(dentry);
mutex_lock_nested(&(dir->d_inode->i_mutex), I_MUTEX_PARENT);
return dir;
}
-static void unlock_parent(struct dentry *dentry)
-{
- mutex_unlock(&(dentry->d_parent->d_inode->i_mutex));
- dput(dentry->d_parent);
-}
-
static void unlock_dir(struct dentry *dir)
{
mutex_unlock(&dir->d_inode->i_mutex);
@@ -426,8 +420,9 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry)
int rc = 0;
struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
struct inode *lower_dir_inode = ecryptfs_inode_to_lower(dir);
+ struct dentry *lower_dir_dentry;
- lock_parent(lower_dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
rc = vfs_unlink(lower_dir_inode, lower_dentry);
if (rc) {
printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc);
@@ -439,7 +434,7 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry)
dentry->d_inode->i_ctime = dir->i_ctime;
d_drop(dentry);
out_unlock:
- unlock_parent(lower_dentry);
+ unlock_dir(lower_dir_dentry);
return rc;
}
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index 788995efd1d3..50c994a249a5 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -243,7 +243,6 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count,
struct ecryptfs_daemon *daemon;
struct ecryptfs_msg_ctx *msg_ctx;
size_t packet_length_size;
- u32 counter_nbo;
char packet_length[3];
size_t i;
size_t total_length;
@@ -257,12 +256,14 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count,
mutex_lock(&daemon->mux);
if (daemon->flags & ECRYPTFS_DAEMON_ZOMBIE) {
rc = 0;
+ mutex_unlock(&ecryptfs_daemon_hash_mux);
printk(KERN_WARNING "%s: Attempt to read from zombified "
"daemon\n", __func__);
goto out_unlock_daemon;
}
if (daemon->flags & ECRYPTFS_DAEMON_IN_READ) {
rc = 0;
+ mutex_unlock(&ecryptfs_daemon_hash_mux);
goto out_unlock_daemon;
}
/* This daemon will not go away so long as this flag is set */
@@ -326,20 +327,18 @@ check_list:
"pending message\n", __func__, count, total_length);
goto out_unlock_msg_ctx;
}
- i = 0;
- buf[i++] = msg_ctx->type;
- counter_nbo = cpu_to_be32(msg_ctx->counter);
- memcpy(&buf[i], (char *)&counter_nbo, 4);
- i += 4;
+ rc = -EFAULT;
+ if (put_user(msg_ctx->type, buf))
+ goto out_unlock_msg_ctx;
+ if (put_user(cpu_to_be32(msg_ctx->counter), (__be32 __user *)(buf + 1)))
+ goto out_unlock_msg_ctx;
+ i = 5;
if (msg_ctx->msg) {
- memcpy(&buf[i], packet_length, packet_length_size);
+ if (copy_to_user(&buf[i], packet_length, packet_length_size))
+ goto out_unlock_msg_ctx;
i += packet_length_size;
- rc = copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size);
- if (rc) {
- printk(KERN_ERR "%s: copy_to_user returned error "
- "[%d]\n", __func__, rc);
+ if (copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size))
goto out_unlock_msg_ctx;
- }
i += msg_ctx->msg_size;
}
rc = i;
@@ -450,7 +449,8 @@ static ssize_t
ecryptfs_miscdev_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- u32 counter_nbo, seq;
+ __be32 counter_nbo;
+ u32 seq;
size_t packet_size, packet_size_length, i;
ssize_t sz = 0;
char *data;
@@ -483,7 +483,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
count);
goto out_free;
}
- memcpy((char *)&counter_nbo, &data[i], 4);
+ memcpy(&counter_nbo, &data[i], 4);
seq = be32_to_cpu(counter_nbo);
i += 4;
rc = ecryptfs_parse_packet_length(&data[i], &packet_size,
diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c
index ebf55150be56..75c2ea9fee35 100644
--- a/fs/ecryptfs/read_write.c
+++ b/fs/ecryptfs/read_write.c
@@ -157,20 +157,6 @@ int ecryptfs_write(struct file *ecryptfs_file, char *data, loff_t offset,
ecryptfs_page_idx, rc);
goto out;
}
- if (start_offset_in_page) {
- /* Read in the page from the lower
- * into the eCryptfs inode page cache,
- * decrypting */
- rc = ecryptfs_decrypt_page(ecryptfs_page);
- if (rc) {
- printk(KERN_ERR "%s: Error decrypting "
- "page; rc = [%d]\n",
- __func__, rc);
- ClearPageUptodate(ecryptfs_page);
- page_cache_release(ecryptfs_page);
- goto out;
- }
- }
ecryptfs_page_virt = kmap_atomic(ecryptfs_page, KM_USER0);
/*
@@ -349,14 +335,6 @@ int ecryptfs_read(char *data, loff_t offset, size_t size,
ecryptfs_page_idx, rc);
goto out;
}
- rc = ecryptfs_decrypt_page(ecryptfs_page);
- if (rc) {
- printk(KERN_ERR "%s: Error decrypting "
- "page; rc = [%d]\n", __func__, rc);
- ClearPageUptodate(ecryptfs_page);
- page_cache_release(ecryptfs_page);
- goto out;
- }
ecryptfs_page_virt = kmap_atomic(ecryptfs_page, KM_USER0);
memcpy((data + data_offset),
((char *)ecryptfs_page_virt + start_offset_in_page),
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-01 04:32:52 +0000