[PATCH] eCryptfs: open-code flag checking and manipulation
Open-code flag checking and manipulation.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Trevor Highland <tshighla@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index b817a1a..6ac6306 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -207,7 +207,7 @@
mutex_init(&crypt_stat->cs_mutex);
mutex_init(&crypt_stat->cs_tfm_mutex);
mutex_init(&crypt_stat->cs_hash_tfm_mutex);
- ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_STRUCT_INITIALIZED);
+ crypt_stat->flags |= ECRYPTFS_STRUCT_INITIALIZED;
}
/**
@@ -305,8 +305,7 @@
int rc = 0;
BUG_ON(!crypt_stat || !crypt_stat->tfm
- || !ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
- ECRYPTFS_STRUCT_INITIALIZED));
+ || !(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED));
if (unlikely(ecryptfs_verbosity > 0)) {
ecryptfs_printk(KERN_DEBUG, "Key size [%d]; key:\n",
crypt_stat->key_size);
@@ -485,7 +484,7 @@
lower_inode = ecryptfs_inode_to_lower(ctx->page->mapping->host);
inode_info = ecryptfs_inode_to_private(ctx->page->mapping->host);
crypt_stat = &inode_info->crypt_stat;
- if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED)) {
+ if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
rc = ecryptfs_copy_page_to_lower(ctx->page, lower_inode,
ctx->param.lower_file);
if (rc)
@@ -617,7 +616,7 @@
crypt_stat = &(ecryptfs_inode_to_private(
page->mapping->host)->crypt_stat);
lower_inode = ecryptfs_inode_to_lower(page->mapping->host);
- if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED)) {
+ if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
rc = ecryptfs_do_readpage(file, page, page->index);
if (rc)
ecryptfs_printk(KERN_ERR, "Error attempting to copy "
@@ -882,7 +881,7 @@
BUG_ON(crypt_stat->iv_bytes > MD5_DIGEST_SIZE);
BUG_ON(crypt_stat->iv_bytes <= 0);
- if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID)) {
+ if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
rc = -EINVAL;
ecryptfs_printk(KERN_WARNING, "Session key not valid; "
"cannot generate root IV\n");
@@ -899,8 +898,7 @@
out:
if (rc) {
memset(crypt_stat->root_iv, 0, crypt_stat->iv_bytes);
- ECRYPTFS_SET_FLAG(crypt_stat->flags,
- ECRYPTFS_SECURITY_WARNING);
+ crypt_stat->flags |= ECRYPTFS_SECURITY_WARNING;
}
return rc;
}
@@ -908,7 +906,7 @@
static void ecryptfs_generate_new_key(struct ecryptfs_crypt_stat *crypt_stat)
{
get_random_bytes(crypt_stat->key, crypt_stat->key_size);
- ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+ crypt_stat->flags |= ECRYPTFS_KEY_VALID;
ecryptfs_compute_root_iv(crypt_stat);
if (unlikely(ecryptfs_verbosity > 0)) {
ecryptfs_printk(KERN_DEBUG, "Generated new session key:\n");
@@ -948,7 +946,7 @@
ecryptfs_set_default_sizes(crypt_stat);
strcpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER);
crypt_stat->key_size = ECRYPTFS_DEFAULT_KEY_BYTES;
- ECRYPTFS_CLEAR_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+ crypt_stat->flags &= ~(ECRYPTFS_KEY_VALID);
crypt_stat->file_version = ECRYPTFS_FILE_VERSION;
crypt_stat->mount_crypt_stat = mount_crypt_stat;
}
@@ -988,8 +986,8 @@
if (mount_crypt_stat->global_auth_tok) {
ecryptfs_printk(KERN_DEBUG, "Initializing context for new "
"file using mount_crypt_stat\n");
- ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_ENCRYPTED);
- ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
+ crypt_stat->flags |= ECRYPTFS_ENCRYPTED;
+ crypt_stat->flags |= ECRYPTFS_KEY_VALID;
ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat,
mount_crypt_stat);
memcpy(crypt_stat->keysigs[crypt_stat->num_keysigs++],
@@ -1074,11 +1072,9 @@
for (i = 0; i < ((sizeof(ecryptfs_flag_map)
/ sizeof(struct ecryptfs_flag_map_elem))); i++)
if (flags & ecryptfs_flag_map[i].file_flag) {
- ECRYPTFS_SET_FLAG(crypt_stat->flags,
- ecryptfs_flag_map[i].local_flag);
+ crypt_stat->flags |= ecryptfs_flag_map[i].local_flag;
} else
- ECRYPTFS_CLEAR_FLAG(crypt_stat->flags,
- ecryptfs_flag_map[i].local_flag);
+ crypt_stat->flags &= ~(ecryptfs_flag_map[i].local_flag);
/* Version is in top 8 bits of the 32-bit flag vector */
crypt_stat->file_version = ((flags >> 24) & 0xFF);
(*bytes_read) = 4;
@@ -1115,8 +1111,7 @@
for (i = 0; i < ((sizeof(ecryptfs_flag_map)
/ sizeof(struct ecryptfs_flag_map_elem))); i++)
- if (ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
- ecryptfs_flag_map[i].local_flag))
+ if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag)
flags |= ecryptfs_flag_map[i].file_flag;
/* Version is in top 8 bits of the 32-bit flag vector */
flags |= ((((u8)crypt_stat->file_version) << 24) & 0xFF000000);
@@ -1414,10 +1409,8 @@
crypt_stat = &ecryptfs_inode_to_private(
ecryptfs_dentry->d_inode)->crypt_stat;
- if (likely(ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
- ECRYPTFS_ENCRYPTED))) {
- if (!ECRYPTFS_CHECK_FLAG(crypt_stat->flags,
- ECRYPTFS_KEY_VALID)) {
+ if (likely(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
+ if (!(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
ecryptfs_printk(KERN_DEBUG, "Key is "
"invalid; bailing out\n");
rc = -EINVAL;