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authorIngo Molnar <mingo@elte.hu>2008-06-25 12:32:01 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-25 12:32:01 +0200
commitda7878d75b8520c9ae00d27dfbbce546a7bfdfbb (patch)
tree547fd497a80818a60ac36831377d5df97868173c /fs/ecryptfs
parent0e50a4c6ab94ffe7e5515b86b5df9e5abc8c6b13 (diff)
parent543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff)
Merge branch 'linus' into x86/pebstip-x86-pebs-2008-06-25_10.32_Wed
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/miscdev.c26
-rw-r--r--fs/ecryptfs/read_write.c22
4 files changed, 13 insertions, 39 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/miscdev.c b/fs/ecryptfs/miscdev.c
index 6560da1a58ce..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;
@@ -328,20 +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;
@@ -452,7 +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;
@@ -485,7 +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),