diff options
Diffstat (limited to 'fs/erofs/super.c')
| -rw-r--r-- | fs/erofs/super.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 666873f745da..bed3dbe5b7cb 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -191,10 +191,14 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb, if (IS_ERR(file)) return PTR_ERR(file); - dif->file = file; - if (!erofs_is_fileio_mode(sbi)) + if (!erofs_is_fileio_mode(sbi)) { dif->dax_dev = fs_dax_get_by_bdev(file_bdev(file), &dif->dax_part_off, NULL, NULL); + } else if (!S_ISREG(file_inode(file)->i_mode)) { + fput(file); + return -EINVAL; + } + dif->file = file; } dif->blocks = le32_to_cpu(dis->blocks); @@ -705,7 +709,9 @@ static int erofs_fc_get_tree(struct fs_context *fc) if (IS_ENABLED(CONFIG_EROFS_FS_ONDEMAND) && sbi->fsid) return get_tree_nodev(fc, erofs_fc_fill_super); - ret = get_tree_bdev(fc, erofs_fc_fill_super); + ret = get_tree_bdev_flags(fc, erofs_fc_fill_super, + IS_ENABLED(CONFIG_EROFS_FS_BACKED_BY_FILE) ? + GET_TREE_BDEV_QUIET_LOOKUP : 0); #ifdef CONFIG_EROFS_FS_BACKED_BY_FILE if (ret == -ENOTBLK) { if (!fc->source) @@ -714,7 +720,10 @@ static int erofs_fc_get_tree(struct fs_context *fc) if (IS_ERR(sbi->fdev)) return PTR_ERR(sbi->fdev); - return get_tree_nodev(fc, erofs_fc_fill_super); + if (S_ISREG(file_inode(sbi->fdev)->i_mode) && + sbi->fdev->f_mapping->a_ops->read_folio) + return get_tree_nodev(fc, erofs_fc_fill_super); + fput(sbi->fdev); } #endif return ret; |