diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namei.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/fs/namei.c b/fs/namei.c index a3fde77d4abf..96ca11dea4a2 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -118,15 +118,6 @@ * POSIX.1 2.4: an empty pathname is invalid (ENOENT). * PATH_MAX includes the nul terminator --RR. */ -void final_putname(struct filename *name) -{ - if (name->separate) { - __putname(name->name); - kfree(name); - } else { - __putname(name); - } -} #define EMBEDDED_NAME_MAX (PATH_MAX - sizeof(struct filename)) @@ -145,6 +136,7 @@ getname_flags(const char __user *filename, int flags, int *empty) result = __getname(); if (unlikely(!result)) return ERR_PTR(-ENOMEM); + result->refcnt = 1; /* * First, try to embed the struct filename inside the names_cache @@ -179,6 +171,7 @@ recopy: } result->name = kname; result->separate = true; + result->refcnt = 1; max = PATH_MAX; goto recopy; } @@ -202,7 +195,7 @@ recopy: return result; error: - final_putname(result); + putname(result); return err; } @@ -243,19 +236,25 @@ getname_kernel(const char * filename) memcpy((char *)result->name, filename, len); result->uptr = NULL; result->aname = NULL; + result->refcnt = 1; audit_getname(result); return result; } -#ifdef CONFIG_AUDITSYSCALL void putname(struct filename *name) { - if (unlikely(!audit_dummy_context())) - return audit_putname(name); - final_putname(name); + BUG_ON(name->refcnt <= 0); + + if (--name->refcnt > 0) + return; + + if (name->separate) { + __putname(name->name); + kfree(name); + } else + __putname(name); } -#endif static int check_acl(struct inode *inode, int mask) { |
