hostfs: get rid of file_type(), fold init_inode()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 45 insertions, 93 deletions

diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h
index 3a52edef994..ea87e224ed9 100644
--- a/fs/hostfs/hostfs.h
+++ b/fs/hostfs/hostfs.h
@@ -70,7 +70,6 @@ struct hostfs_stat {
 extern int stat_file(const char *path, struct hostfs_stat *p, int fd);
 extern int access_file(char *path, int r, int w, int x);
 extern int open_file(char *path, int r, int w, int append);
-extern int file_type(const char *path, int *maj, int *min);
 extern void *open_dir(char *path, int *err_out);
 extern char *read_dir(void *stream, unsigned long long *pos,
                       unsigned long long *ino_out, int *len_out);
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 420a826ae0f..b29a2b878f4 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -129,26 +129,6 @@ static char *inode_name(struct inode *ino, int extra)
         return dentry_name(dentry, extra);
 }
 
-static int read_name(struct inode *ino, char *name)
-{
-        struct hostfs_stat st;
-        int err = stat_file(name, &st, -1);
-        if (err)
-                return err;
-
-        ino->i_ino = st.ino;
-        ino->i_mode = st.mode;
-        ino->i_nlink = st.nlink;
-        ino->i_uid = st.uid;
-        ino->i_gid = st.gid;
-        ino->i_atime = st.atime;
-        ino->i_mtime = st.mtime;
-        ino->i_ctime = st.ctime;
-        ino->i_size = st.size;
-        ino->i_blocks = st.blocks;
-        return 0;
-}
-
 static char *follow_link(char *link)
 {
         int len, n;
@@ -478,43 +458,51 @@ static const struct address_space_operations hostfs_aops = {
         .write_end      = hostfs_write_end,
 };
 
-static void init_inode(struct inode *inode, char *path)
+static int read_name(struct inode *ino, char *name)
 {
-        int type;
-        int maj, min;
-        dev_t rdev = 0;
+        dev_t rdev;
+        struct hostfs_stat st;
+        int err = stat_file(name, &st, -1);
+        if (err)
+                return err;
 
-        type = file_type(path, &maj, &min);
         /* Reencode maj and min with the kernel encoding.*/
-        rdev = MKDEV(maj, min);
+        rdev = MKDEV(st.maj, st.min);
 
-        if (type == OS_TYPE_SYMLINK)
-                inode->i_op = &page_symlink_inode_operations;
-        else if (type == OS_TYPE_DIR)
-                inode->i_op = &hostfs_dir_iops;
-        else inode->i_op = &hostfs_iops;
-
-        if (type == OS_TYPE_DIR) inode->i_fop = &hostfs_dir_fops;
-        else inode->i_fop = &hostfs_file_fops;
-
-        if (type == OS_TYPE_SYMLINK)
-                inode->i_mapping->a_ops = &hostfs_link_aops;
-        else inode->i_mapping->a_ops = &hostfs_aops;
-
-        switch (type) {
-        case OS_TYPE_CHARDEV:
-                init_special_inode(inode, S_IFCHR, rdev);
-                break;
-        case OS_TYPE_BLOCKDEV:
-                init_special_inode(inode, S_IFBLK, rdev);
+        switch (st.mode & S_IFMT) {
+        case S_IFLNK:
+                ino->i_op = &page_symlink_inode_operations;
+                ino->i_mapping->a_ops = &hostfs_link_aops;
                 break;
-        case OS_TYPE_FIFO:
-                init_special_inode(inode, S_IFIFO, 0);
+        case S_IFDIR:
+                ino->i_op = &hostfs_dir_iops;
+                ino->i_fop = &hostfs_dir_fops;
                 break;
-        case OS_TYPE_SOCK:
-                init_special_inode(inode, S_IFSOCK, 0);
+        case S_IFCHR:
+        case S_IFBLK:
+        case S_IFIFO:
+        case S_IFSOCK:
+                init_special_inode(ino, st.mode & S_IFMT, rdev);
+                ino->i_op = &hostfs_iops;
                 break;
+
+        default:
+                ino->i_op = &hostfs_iops;
+                ino->i_fop = &hostfs_file_fops;
+                ino->i_mapping->a_ops = &hostfs_aops;
         }
+
+        ino->i_ino = st.ino;
+        ino->i_mode = st.mode;
+        ino->i_nlink = st.nlink;
+        ino->i_uid = st.uid;
+        ino->i_gid = st.gid;
+        ino->i_atime = st.atime;
+        ino->i_mtime = st.mtime;
+        ino->i_ctime = st.ctime;
+        ino->i_size = st.size;
+        ino->i_blocks = st.blocks;
+        return 0;
 }
 
 int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
@@ -539,12 +527,10 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
                          mode & S_IRUSR, mode & S_IWUSR, mode & S_IXUSR,
                          mode & S_IRGRP, mode & S_IWGRP, mode & S_IXGRP,
                          mode & S_IROTH, mode & S_IWOTH, mode & S_IXOTH);
-        if (fd < 0) {
+        if (fd < 0)
                 error = fd;
-        } else {
+        else
                 error = read_name(inode, name);
-                init_inode(inode, name);
-        }
 
         kfree(name);
         if (error)
@@ -580,7 +566,6 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
                 goto out_put;
 
         err = read_name(inode, name);
-        init_inode(inode, name);
 
         kfree(name);
         if (err == -ENOENT) {
@@ -707,7 +692,6 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
                 goto out_free;
 
         err = read_name(inode, name);
-        init_inode(inode, name);
         if (err)
                 goto out_put;
         kfree(name);
@@ -922,21 +906,20 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
         if (!root_inode)
                 goto out;
 
-        root_inode->i_op = &hostfs_dir_iops;
-        root_inode->i_fop = &hostfs_dir_fops;
+        err = read_name(root_inode, host_root_path);
+        if (err)
+                goto out_put;
 
-        if (file_type(host_root_path, NULL, NULL) == OS_TYPE_SYMLINK) {
+        if (S_ISLNK(root_inode->i_mode)) {
                 char *name = follow_link(host_root_path);
                 if (IS_ERR(name))
                         err = PTR_ERR(name);
                 else
                         err = read_name(root_inode, name);
                 kfree(name);
-        } else {
-                err = read_name(root_inode, host_root_path);
+                if (err)
+                        goto out_put;
         }
-        if (err)
-                goto out_put;
 
         err = -ENOMEM;
         sb->s_root = d_alloc_root(root_inode);
diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 701d454a679..91ebfcefa40 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -53,36 +53,6 @@ int stat_file(const char *path, struct hostfs_stat *p, int fd)
         return 0;
 }
 
-int file_type(const char *path, int *maj, int *min)
-{
-        struct stat64 buf;
-
-        if (lstat64(path, &buf) < 0)
-                return -errno;
-        /*
-         * We cannot pass rdev as is because glibc and the kernel disagree
-         * about its definition.
-         */
-        if (maj != NULL)
-                *maj = os_major(buf.st_rdev);
-        if (min != NULL)
-                *min = os_minor(buf.st_rdev);
-
-        if (S_ISDIR(buf.st_mode))
-                return OS_TYPE_DIR;
-        else if (S_ISLNK(buf.st_mode))
-                return OS_TYPE_SYMLINK;
-        else if (S_ISCHR(buf.st_mode))
-                return OS_TYPE_CHARDEV;
-        else if (S_ISBLK(buf.st_mode))
-                return OS_TYPE_BLOCKDEV;
-        else if (S_ISFIFO(buf.st_mode))
-                return OS_TYPE_FIFO;
-        else if (S_ISSOCK(buf.st_mode))
-                return OS_TYPE_SOCK;
-        else return OS_TYPE_FILE;
-}
-
 int access_file(char *path, int r, int w, int x)
 {
         int mode = 0;