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Diffstat (limited to 'fs/ioctl.c')
-rw-r--r--fs/ioctl.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 76cf22ac97..fb0628e680 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -763,6 +763,33 @@ static int ioctl_fssetxattr(struct file *file, void __user *argp)
return err;
}
+static int ioctl_getfsuuid(struct file *file, void __user *argp)
+{
+ struct super_block *sb = file_inode(file)->i_sb;
+ struct fsuuid2 u = { .len = sb->s_uuid_len, };
+
+ if (!sb->s_uuid_len)
+ return -ENOTTY;
+
+ memcpy(&u.uuid[0], &sb->s_uuid, sb->s_uuid_len);
+
+ return copy_to_user(argp, &u, sizeof(u)) ? -EFAULT : 0;
+}
+
+static int ioctl_get_fs_sysfs_path(struct file *file, void __user *argp)
+{
+ struct super_block *sb = file_inode(file)->i_sb;
+
+ if (!strlen(sb->s_sysfs_name))
+ return -ENOTTY;
+
+ struct fs_sysfs_path u = {};
+
+ u.len = scnprintf(u.name, sizeof(u.name), "%s/%s", sb->s_type->name, sb->s_sysfs_name);
+
+ return copy_to_user(argp, &u, sizeof(u)) ? -EFAULT : 0;
+}
+
/*
* do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
* It's just a simple helper for sys_ioctl and compat_sys_ioctl.
@@ -845,6 +872,12 @@ static int do_vfs_ioctl(struct file *filp, unsigned int fd,
case FS_IOC_FSSETXATTR:
return ioctl_fssetxattr(filp, argp);
+ case FS_IOC_GETFSUUID:
+ return ioctl_getfsuuid(filp, argp);
+
+ case FS_IOC_GETFSSYSFSPATH:
+ return ioctl_get_fs_sysfs_path(filp, argp);
+
default:
if (S_ISREG(inode->i_mode))
return file_ioctl(filp, cmd, argp);