Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
Merge tag 'compat-ioctl-fix' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
Pull compat-ioctl fix from Arnd Bergmann:
"One patch in the compat-ioctl series broke 32-bit rootfs for multiple
people testing on 64-bit kernels. Let's fix it in -rc1 before others
run into the same issue"
* tag 'compat-ioctl-fix' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground:
compat_ioctl: fix FIONREAD on devices
+7
-4
fs/ioctl.c
+7
-4
fs/ioctl.c
···
536
536
537
537
static int file_ioctl(struct file *filp, unsigned int cmd, int __user *p)
538
538
{
539
-
struct inode *inode = file_inode(filp);
540
-
541
539
switch (cmd) {
542
540
case FIBMAP:
543
541
return ioctl_fibmap(filp, p);
544
-
case FIONREAD:
545
-
return put_user(i_size_read(inode) - filp->f_pos, p);
546
542
case FS_IOC_RESVSP:
547
543
case FS_IOC_RESVSP64:
548
544
return ioctl_preallocate(filp, 0, p);
···
729
733
730
734
case FIDEDUPERANGE:
731
735
return ioctl_file_dedupe_range(filp, argp);
736
+
737
+
case FIONREAD:
738
+
if (!S_ISREG(inode->i_mode))
739
+
return vfs_ioctl(filp, cmd, arg);
740
+
741
+
return put_user(i_size_read(inode) - filp->f_pos,
742
+
(int __user *)argp);
732
743
733
744
default:
734
745
if (S_ISREG(inode->i_mode))