goto close_fail;
}
} else {
+ struct user_namespace *mnt_userns;
struct inode *inode;
int open_flags = O_CREAT | O_RDWR | O_NOFOLLOW |
O_LARGEFILE | O_EXCL;
* a process dumps core while its cwd is e.g. on a vfat
* filesystem.
*/
- if (!uid_eq(inode->i_uid, current_fsuid()))
+ mnt_userns = file_mnt_user_ns(cprm.file);
+ if (!uid_eq(i_uid_into_mnt(mnt_userns, inode), current_fsuid()))
goto close_fail;
if ((inode->i_mode & 0677) != 0600)
goto close_fail;
if (!(cprm.file->f_mode & FMODE_CAN_WRITE))
goto close_fail;
- if (do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file))
+ if (do_truncate(mnt_userns, cprm.file->f_path.dentry,
+ 0, 0, cprm.file))
goto close_fail;
}
if (file->f_op->llseek && file->f_op->llseek != no_llseek) {
offset = file->f_op->llseek(file, 0, SEEK_CUR);
if (i_size_read(file->f_mapping->host) < offset)
- do_truncate(file->f_path.dentry, offset, 0, file);
+ do_truncate(file_mnt_user_ns(file), file->f_path.dentry,
+ offset, 0, file);
}
}
EXPORT_SYMBOL(dump_truncate);