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Merge branch 'getname2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull getname/putname updates from Al Viro:
 "Rework of getname/getname_kernel/etc., mostly from Paul Moore.  Gets
  rid of quite a pile of kludges between namei and audit..."

* 'getname2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  audit: replace getname()/putname() hacks with reference counters
  audit: fix filename matching in __audit_inode() and __audit_inode_child()
  audit: enable filename recording via getname_kernel()
  simpler calling conventions for filename_mountpoint()
  fs: create proper filename objects using getname_kernel()
  fs: rework getname_kernel to handle up to PATH_MAX sized filenames
  cut down the number of do_path_lookup() callers
This commit is contained in:
Linus Torvalds
2015-02-17 15:27:47 -08:00
parent c6b1de1b64 55422d0bd2
commit 05016b0f0a
7 changed files with 145 additions and 218 deletions
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9
include/linux/fs.h
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@@ -2141,6 +2141,7 @@ struct filename {
const char *name; /* pointer to actual string */
const __user char *uptr; /* original userland pointer */
struct audit_names *aname;
int refcnt;
bool separate; /* should "name" be freed? */
};
@@ -2162,6 +2163,7 @@ extern int filp_close(struct file *, fl_owner_t id);
extern struct filename *getname_flags(const char __user *, int, int *);
extern struct filename *getname(const char __user *);
extern struct filename *getname_kernel(const char *);
extern void putname(struct filename *name);
enum {
FILE_CREATED = 1,
@@ -2182,15 +2184,8 @@ extern void __init vfs_caches_init(unsigned long);
extern struct kmem_cache *names_cachep;
extern void final_putname(struct filename *name);
#define __getname() kmem_cache_alloc(names_cachep, GFP_KERNEL)
#define __putname(name) kmem_cache_free(names_cachep, (void *)(name))
#ifndef CONFIG_AUDITSYSCALL
#define putname(name) final_putname(name)
#else
extern void putname(struct filename *name);
#endif
#ifdef CONFIG_BLOCK
extern int register_blkdev(unsigned int, const char *);