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| author |   Dmitry Kadashev <dkadashev@gmail.com> | 2021-07-08 13:34:41 +0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-08-23 13:41:26 -0600 |
| commit | da2d0cede330192879e8e16ddb3158aa76ba5ec2 (patch) | |
| tree | 4586f4c9c0e4cabfccd304f36a7fb85a23c08d14 /fs/namei.c | |
| parent | namei: make do_mknodat() take struct filename (diff) | |
| download | linux-dev-da2d0cede330192879e8e16ddb3158aa76ba5ec2.tar.xz linux-dev-da2d0cede330192879e8e16ddb3158aa76ba5ec2.zip | |
namei: make do_symlinkat() take struct filename
Pass in the struct filename pointers instead of the user string, for
uniformity with the recently converted do_mkdnodat(), do_unlinkat(),
do_renameat(), do_mkdirat().
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/io-uring/20210330071700.kpjoyp5zlni7uejm@wittgenstein/
Signed-off-by: Dmitry Kadashev <dkadashev@gmail.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20210708063447.3556403-6-dkadashev@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | fs/namei.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/fs/namei.c b/fs/namei.c index ea575dd788b7..522c35b33fea 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4207,23 +4207,23 @@ int vfs_symlink(struct user_namespace *mnt_userns, struct inode *dir, } EXPORT_SYMBOL(vfs_symlink); -static long do_symlinkat(const char __user *oldname, int newdfd, - const char __user *newname) +static long do_symlinkat(struct filename *from, int newdfd, + struct filename *to) { int error; - struct filename *from; struct dentry *dentry; struct path path; unsigned int lookup_flags = 0; - from = getname(oldname); - if (IS_ERR(from)) - return PTR_ERR(from); + if (IS_ERR(from)) { + error = PTR_ERR(from); + goto out_putnames; + } retry: - dentry = user_path_create(newdfd, newname, &path, lookup_flags); + dentry = __filename_create(newdfd, to, &path, lookup_flags); error = PTR_ERR(dentry); if (IS_ERR(dentry)) - goto out_putname; + goto out_putnames; error = security_path_symlink(&path, dentry, from->name); if (!error) { @@ -4238,7 +4238,8 @@ retry: lookup_flags |= LOOKUP_REVAL; goto retry; } -out_putname: +out_putnames: + putname(to); putname(from); return error; } @@ -4246,12 +4247,12 @@ out_putname: SYSCALL_DEFINE3(symlinkat, const char __user *, oldname, int, newdfd, const char __user *, newname) { - return do_symlinkat(oldname, newdfd, newname); + return do_symlinkat(getname(oldname), newdfd, getname(newname)); } SYSCALL_DEFINE2(symlink, const char __user *, oldname, const char __user *, newname) { - return do_symlinkat(oldname, AT_FDCWD, newname); + return do_symlinkat(getname(oldname), AT_FDCWD, getname(newname)); } /** |