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| author | Dmitry Kadashev <dkadashev@gmail.com> | 2021-07-08 13:34:40 +0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-23 13:41:26 -0600 |
| commit | 7797251bb5ab7f184dafdfebd05f469ff6a67b77 (patch) | |
| tree | 89184219baf210c4ea06dd1ae35b0e86ac6d53a8 /fs/namei.c | |
| parent | 584d3226d665214dc1c498045c253529acdd3134 (diff) | |
| download | linux-7797251bb5ab7f184dafdfebd05f469ff6a67b77.tar.gz linux-7797251bb5ab7f184dafdfebd05f469ff6a67b77.tar.bz2 linux-7797251bb5ab7f184dafdfebd05f469ff6a67b77.zip | |
namei: make do_mknodat() take struct filename
Pass in the struct filename pointers instead of the user string, for
uniformity with the recently converted 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/20210708063447.3556403-5-dkadashev@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/fs/namei.c b/fs/namei.c index e9358e61fce2..ea575dd788b7 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3739,7 +3739,7 @@ static int may_mknod(umode_t mode) } } -static long do_mknodat(int dfd, const char __user *filename, umode_t mode, +static long do_mknodat(int dfd, struct filename *name, umode_t mode, unsigned int dev) { struct user_namespace *mnt_userns; @@ -3750,17 +3750,18 @@ static long do_mknodat(int dfd, const char __user *filename, umode_t mode, error = may_mknod(mode); if (error) - return error; + goto out1; retry: - dentry = user_path_create(dfd, filename, &path, lookup_flags); + dentry = __filename_create(dfd, name, &path, lookup_flags); + error = PTR_ERR(dentry); if (IS_ERR(dentry)) - return PTR_ERR(dentry); + goto out1; if (!IS_POSIXACL(path.dentry->d_inode)) mode &= ~current_umask(); error = security_path_mknod(&path, dentry, mode, dev); if (error) - goto out; + goto out2; mnt_userns = mnt_user_ns(path.mnt); switch (mode & S_IFMT) { @@ -3779,24 +3780,26 @@ retry: dentry, mode, 0); break; } -out: +out2: done_path_create(&path, dentry); if (retry_estale(error, lookup_flags)) { lookup_flags |= LOOKUP_REVAL; goto retry; } +out1: + putname(name); return error; } SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, unsigned int, dev) { - return do_mknodat(dfd, filename, mode, dev); + return do_mknodat(dfd, getname(filename), mode, dev); } SYSCALL_DEFINE3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev) { - return do_mknodat(AT_FDCWD, filename, mode, dev); + return do_mknodat(AT_FDCWD, getname(filename), mode, dev); } /** |