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Smack: Abstract use of cred security blob

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Don't use the cred->security pointer directly.
Provide a helper function that provides the security blob pointer.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
[kees: adjusted for ordered init series]
Signed-off-by: Kees Cook <keescook@chromium.org>
此提交包含在：
Casey Schaufler
2018-11-09 16:12:56 -08:00
提交者 Kees Cook
父節點 6d9c939dbe
當前提交 b17103a8b8
共有 4 個檔案被更改，包括 53 行新增 和 43 行删除
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18
security/smack/smackfs.c
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@@ -2208,14 +2208,14 @@ static const struct file_operations smk_logging_ops = {
static void *load_self_seq_start(struct seq_file *s, loff_t *pos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_seq_start(s, pos, &tsp->smk_rules);
}
static void *load_self_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_seq_next(s, v, pos, &tsp->smk_rules);
}
@@ -2262,7 +2262,7 @@ static int smk_open_load_self(struct inode *inode, struct file *file)
static ssize_t smk_write_load_self(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_write_rules_list(file, buf, count, ppos, &tsp->smk_rules,
&tsp->smk_rules_lock, SMK_FIXED24_FMT);
@@ -2414,14 +2414,14 @@ static const struct file_operations smk_load2_ops = {
static void *load_self2_seq_start(struct seq_file *s, loff_t *pos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_seq_start(s, pos, &tsp->smk_rules);
}
static void *load_self2_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_seq_next(s, v, pos, &tsp->smk_rules);
}
@@ -2467,7 +2467,7 @@ static int smk_open_load_self2(struct inode *inode, struct file *file)
static ssize_t smk_write_load_self2(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_write_rules_list(file, buf, count, ppos, &tsp->smk_rules,
&tsp->smk_rules_lock, SMK_LONG_FMT);
@@ -2681,14 +2681,14 @@ static const struct file_operations smk_syslog_ops = {
static void *relabel_self_seq_start(struct seq_file *s, loff_t *pos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_seq_start(s, pos, &tsp->smk_relabel);
}
static void *relabel_self_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
return smk_seq_next(s, v, pos, &tsp->smk_relabel);
}
@@ -2736,7 +2736,7 @@ static int smk_open_relabel_self(struct inode *inode, struct file *file)
static ssize_t smk_write_relabel_self(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct task_smack *tsp = current_security();
struct task_smack *tsp = smack_cred(current_cred());
char *data;
int rc;
LIST_HEAD(list_tmp);