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authorJeff Layton <jlayton@redhat.com>2012-10-10 23:25:28 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-13 04:15:08 +0400
commit7ac86265dc8f665cc49d6e60a125e608cd2fca14 (patch)
tree9e7941e2d8dfb2106c5fb28504531dafc72e14e6 /include
parent91a27b2a756784714e924e5e854b919273082d26 (diff)
downloadlinux-7ac86265dc8f665cc49d6e60a125e608cd2fca14.tar.xz
audit: allow audit code to satisfy getname requests from its names_list
Currently, if we call getname() on a userland string more than once, we'll get multiple copies of the string and multiple audit_names records. Add a function that will allow the audit_names code to satisfy getname requests using info from the audit_names list, avoiding a new allocation and audit_names records. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/audit.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 94d29164803f..d5d7952ab7d8 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -471,6 +471,7 @@ extern void __audit_syscall_entry(int arch,
int major, unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
extern void __audit_syscall_exit(int ret_success, long ret_value);
+extern struct filename *__audit_reusename(const __user char *uptr);
extern void __audit_getname(struct filename *name);
extern void audit_putname(struct filename *name);
extern void __audit_inode(const char *name, const struct dentry *dentry,
@@ -507,6 +508,12 @@ static inline void audit_syscall_exit(void *pt_regs)
__audit_syscall_exit(success, return_code);
}
}
+static inline struct filename *audit_reusename(const __user char *name)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_reusename(name);
+ return NULL;
+}
static inline void audit_getname(struct filename *name)
{
if (unlikely(!audit_dummy_context()))
@@ -665,6 +672,10 @@ static inline int audit_dummy_context(void)
{
return 1;
}
+static inline struct filename *audit_reusename(const __user char *name)
+{
+ return NULL;
+}
static inline void audit_getname(struct filename *name)
{ }
static inline void audit_putname(struct filename *name)