switch (cmd) {
case FAT_IOCTL_GET_ATTRIBUTES:
{
- u32 attr = fat_make_attrs(inode);
+ u32 attr;
+
+ mutex_lock(&inode->i_mutex);
+ attr = fat_make_attrs(inode);
+ mutex_unlock(&inode->i_mutex);
+
return put_user(attr, user_attr);
}
case FAT_IOCTL_SET_ATTRIBUTES:
fatent_brelse(&fatent);
return 0;
} else if (ret == FAT_ENT_FREE) {
- fat_fs_panic(sb,
+ fat_fs_error(sb,
"%s: invalid cluster chain (i_pos %lld)",
__func__, MSDOS_I(inode)->i_pos);
ret = -EIO;
/*
* Of the r and x bits, all (subject to umask) must be present. Of the
* w bits, either all (subject to umask) or none must be present.
+ *
+ * If fat_mode_can_hold_ro(inode) is false, can't change w bits.
*/
if ((perm & (S_IRUGO | S_IXUGO)) != (inode->i_mode & (S_IRUGO|S_IXUGO)))
return -EPERM;
- if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask)))
- return -EPERM;
+ if (fat_mode_can_hold_ro(inode)) {
+ if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask)))
+ return -EPERM;
+ } else {
+ if ((perm & S_IWUGO) != (S_IWUGO & ~mask))
+ return -EPERM;
+ }
*mode_ptr &= S_IFMT | perm;
{
mode_t allow_utime = sbi->options.allow_utime;
- if (current->fsuid != inode->i_uid) {
+ if (current_fsuid() != inode->i_uid) {
if (in_group_p(inode->i_gid))
allow_utime >>= 3;
if (allow_utime & MAY_WRITE)
{
struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
struct inode *inode = dentry->d_inode;
- int error = 0;
unsigned int ia_valid;
+ int error;
/*
* Expand the file. Since inode_setattr() updates ->i_size
attr->ia_valid &= ~ATTR_MODE;
}
- error = inode_setattr(inode, attr);
+ if (attr->ia_valid)
+ error = inode_setattr(inode, attr);
out:
return error;
}