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The latest cp tool is trying to use the btrfs clone operation that is

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implemented via ioctl interface. First of all return ENOTSUP for this
operation as a cp fallback to usual method in that case. Secondly, do
not print out the message about unimplemented operation.
This commit is contained in:
Dmitry Chagin 2015-05-24 18:12:04 +00:00
parent 63cc3320d9
commit 5989b75bdb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=283496
2 changed files with 16 additions and 3 deletions
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13
sys/compat/linux/linux_ioctl.c
View File

@ -3596,9 +3596,16 @@ linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
sx_sunlock(&linux_ioctl_sx);
fdrop(fp, td);
linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
args->fd, (int)(args->cmd & 0xffff),
(int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
switch (args->cmd & 0xffff) {
case LINUX_BTRFS_IOC_CLONE:
return (ENOTSUP);
default:
linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
args->fd, (int)(args->cmd & 0xffff),
(int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
break;
}
return (EINVAL);
}

6
sys/compat/linux/linux_ioctl.h
View File

@ -744,6 +744,12 @@
#define FBSD_LUSB_MAX 0xffff
#define FBSD_LUSB_MIN 0xffdd
/*
* Linux btrfs clone operation
*/
#define LINUX_BTRFS_IOC_CLONE 0x9409 /* 0x40049409 */
/*
* Pluggable ioctl handlers
*/