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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-03-14 21:42:45 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-04-02 07:19:15 +0400 |
| commit | 5d826c847b34de6415b4f1becd88a57ff619af50 (patch) | |
| tree | 431338c4141bcff1d392f232613841bf1971d99b /fs/namei.c | |
| parent | 4efcc9ffcd4fc53f1f7de539842cdffa1f8e5ecc (diff) | |
| download | linux-5d826c847b34de6415b4f1becd88a57ff619af50.tar.xz | |
new helper: readlink_copy()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/fs/namei.c b/fs/namei.c index 617de9e9967b..4fb52f0ca5cb 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4297,11 +4297,9 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna return sys_renameat(AT_FDCWD, oldname, AT_FDCWD, newname); } -int vfs_readlink(struct dentry *dentry, char __user *buffer, int buflen, const char *link) +int readlink_copy(char __user *buffer, int buflen, const char *link) { - int len; - - len = PTR_ERR(link); + int len = PTR_ERR(link); if (IS_ERR(link)) goto out; @@ -4313,7 +4311,7 @@ int vfs_readlink(struct dentry *dentry, char __user *buffer, int buflen, const c out: return len; } -EXPORT_SYMBOL(vfs_readlink); +EXPORT_SYMBOL(readlink_copy); /* * A helper for ->readlink(). This should be used *ONLY* for symlinks that @@ -4331,7 +4329,7 @@ int generic_readlink(struct dentry *dentry, char __user *buffer, int buflen) if (IS_ERR(cookie)) return PTR_ERR(cookie); - res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd)); + res = readlink_copy(buffer, buflen, nd_get_link(&nd)); if (dentry->d_inode->i_op->put_link) dentry->d_inode->i_op->put_link(dentry, &nd, cookie); return res; @@ -4356,8 +4354,7 @@ static char *page_getlink(struct dentry * dentry, struct page **ppage) int page_readlink(struct dentry *dentry, char __user *buffer, int buflen) { struct page *page = NULL; - char *s = page_getlink(dentry, &page); - int res = vfs_readlink(dentry,buffer,buflen,s); + int res = readlink_copy(buffer, buflen, page_getlink(dentry, &page)); if (page) { kunmap(page); page_cache_release(page); |