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| author | sobomax <sobomax@FreeBSD.org> | 2005-01-30 08:12:37 +0000 |
|---|---|---|
| committer | sobomax <sobomax@FreeBSD.org> | 2005-01-30 08:12:37 +0000 |
| commit | 69aa6843efc6c9eeb6337b4d4ea4111c5ccd9ea7 (patch) | |
| tree | 60c80029e1db66c753066e1ca06309b6a56d0ce6 /sys/sys/cdio.h | |
| parent | 357d55c30bf33ab6d5042b919803aac27999084a (diff) | |
| download | FreeBSD-src-69aa6843efc6c9eeb6337b4d4ea4111c5ccd9ea7.zip FreeBSD-src-69aa6843efc6c9eeb6337b4d4ea4111c5ccd9ea7.tar.gz | |
Boot away another stackgap (one of the lest ones in linuxlator/i386) by
providing special version of CDIOCREADSUBCHANNEL ioctl(), which assumes that
result has to be placed into kernel space not user space. In the long run
more generic solution has to be designed WRT emulating various ioctl()s
that operate on userspace buffers, but right now there is only one such
ioctl() is emulated, so that it makes little sense.
MFC after: 2 weeks
Diffstat (limited to 'sys/sys/cdio.h')
| -rw-r--r-- | sys/sys/cdio.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/sys/cdio.h b/sys/sys/cdio.h index a3eb271..3614d19 100644 --- a/sys/sys/cdio.h +++ b/sys/sys/cdio.h @@ -274,4 +274,11 @@ struct ioc_capability { /*<2>*/ #define CDIOCCAPABILITY _IOR('c',30,struct ioc_capability) /*<2>*/ +/* + * Special version of CDIOCREADSUBCHANNEL which assumes that + * ioc_read_subchannel->data points to the kernel memory. For + * use in compatibility layers. + */ +#define CDIOCREADSUBCHANNEL_SYSSPACE _IOWR('c', 31, struct ioc_read_subchannel) + #endif /* !_SYS_CDIO_H_ */ |
