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| author | Christoph Hellwig <hch@lst.de> | 2006-01-09 20:52:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-10 08:01:32 -0800 |
| commit | ec3cad96901373ad0e21611cfbcc372fe09df1f7 (patch) | |
| tree | 4c4fff817b9e88fe3fd015382913944fe2d946d8 /fs/compat_ioctl.c | |
| parent | 3a0f69d59ba41fbcad6a17b6e8aab02bf45e20ce (diff) | |
| download | lwn-ec3cad96901373ad0e21611cfbcc372fe09df1f7.tar.gz lwn-ec3cad96901373ad0e21611cfbcc372fe09df1f7.zip | |
[PATCH] move rtc compat ioctl handling to fs/compat_ioctl.c
This patch implements generic handling of RTC_IRQP_READ32, RTC_IRQP_SET32,
RTC_EPOCH_READ32 and RTC_EPOCH_SET32 in fs/compat_ioctl.c. It's based on the
x86_64 code which needed a little massaging to be endian-clean.
parisc used COMPAT_IOCTL or generic w_long handlers for these whichce is wrong
and can't work because the ioctls encode sizeof(unsigned long) in their ioctl
number. parisc also duplicated COMPAT_IOCTL entries for other rtc ioctls
which I remove in this patch, too.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Matthew Wilcox <matthew@wil.cx>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/compat_ioctl.c')
| -rw-r--r-- | fs/compat_ioctl.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 55d9a3a954cf..b9aeacc11c8f 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -2475,6 +2475,49 @@ static int old_bridge_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg return -EINVAL; } +#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t) +#define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t) +#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t) +#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t) + +static int rtc_ioctl(unsigned fd, unsigned cmd, unsigned long arg) +{ + mm_segment_t oldfs = get_fs(); + compat_ulong_t val32; + unsigned long kval; + int ret; + + switch (cmd) { + case RTC_IRQP_READ32: + case RTC_EPOCH_READ32: + set_fs(KERNEL_DS); + ret = sys_ioctl(fd, (cmd == RTC_IRQP_READ32) ? + RTC_IRQP_READ : RTC_EPOCH_READ, + (unsigned long)&kval); + set_fs(oldfs); + if (ret) + return ret; + val32 = kval; + return put_user(val32, (unsigned int __user *)arg); + case RTC_IRQP_SET32: + case RTC_EPOCH_SET32: + ret = get_user(val32, (unsigned int __user *)arg); + if (ret) + return ret; + kval = val32; + + set_fs(KERNEL_DS); + ret = sys_ioctl(fd, (cmd == RTC_IRQP_SET32) ? + RTC_IRQP_SET : RTC_EPOCH_SET, + (unsigned long)&kval); + set_fs(oldfs); + return ret; + default: + /* unreached */ + return -ENOIOCTLCMD; + } +} + #if defined(CONFIG_NCP_FS) || defined(CONFIG_NCP_FS_MODULE) struct ncp_ioctl_request_32 { u32 function; @@ -2858,6 +2901,10 @@ HANDLE_IOCTL(SIOCSIWENCODE, do_wireless_ioctl) HANDLE_IOCTL(SIOCGIWENCODE, do_wireless_ioctl) HANDLE_IOCTL(SIOCSIFBR, old_bridge_ioctl) HANDLE_IOCTL(SIOCGIFBR, old_bridge_ioctl) +HANDLE_IOCTL(RTC_IRQP_READ32, rtc_ioctl) +HANDLE_IOCTL(RTC_IRQP_SET32, rtc_ioctl) +HANDLE_IOCTL(RTC_EPOCH_READ32, rtc_ioctl) +HANDLE_IOCTL(RTC_EPOCH_SET32, rtc_ioctl) #if defined(CONFIG_NCP_FS) || defined(CONFIG_NCP_FS_MODULE) HANDLE_IOCTL(NCP_IOC_NCPREQUEST_32, do_ncp_ncprequest) |