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fs/ntfs3: Do not allow to change label if volume is read-only

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[ Upstream commit e52dce610a ]

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Konstantin Komarov 2023-09-25 10:56:15 +03:00 committed by Greg Kroah-Hartman
parent da05aa786c
commit d408008a88
1 changed files with 6 additions and 1 deletions
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7
fs/ntfs3/super.c
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@ -498,7 +498,12 @@ static ssize_t ntfs3_label_write(struct file *file, const char __user *buffer,
struct super_block *sb = pde_data(file_inode(file));
struct ntfs_sb_info *sbi = sb->s_fs_info;
ssize_t ret = count;
u8 *label = kmalloc(count, GFP_NOFS);
u8 *label;
if (sb_rdonly(sb))
return -EROFS;
label = kmalloc(count, GFP_NOFS);
if (!label)
return -ENOMEM;