diff options
| author | John Stultz <john.stultz@linaro.org> | 2013-01-11 15:46:24 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-18 12:37:11 -0800 |
| commit | 532572b94815e1ede5d9c5434ddb94835df4429e (patch) | |
| tree | 0475f48d2f44ba5a08865632c7c81cb18a63160f | |
| parent | cec8bb73a2c603034b04b5d56e16878d0b0ef2dd (diff) | |
staging: alarm-dev: Implement compat_ioctl support
Implement compat_ioctl support for the alarm-dev ioctl.
Cc: Serban Constantinescu <serban.constantinescu@arm.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Colin Cross <ccross@google.com>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/android/alarm-dev.c | 35 | ||||
| -rw-r--r-- | drivers/staging/android/android_alarm.h | 19 |
2 files changed, 54 insertions, 0 deletions
diff --git a/drivers/staging/android/alarm-dev.c b/drivers/staging/android/alarm-dev.c index 43af3b36d4c..ceb1c643753 100644 --- a/drivers/staging/android/alarm-dev.c +++ b/drivers/staging/android/alarm-dev.c @@ -274,6 +274,38 @@ static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return rv; } +#ifdef CONFIG_COMPAT +static long alarm_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + + struct timespec ts; + int rv; + + switch (ANDROID_ALARM_BASE_CMD(cmd)) { + case ANDROID_ALARM_SET_AND_WAIT_COMPAT(0): + case ANDROID_ALARM_SET_COMPAT(0): + case ANDROID_ALARM_SET_RTC_COMPAT: + if (compat_get_timespec(&ts, (void __user *)arg)) + return -EFAULT; + /* fall through */ + case ANDROID_ALARM_GET_TIME_COMPAT(0): + cmd = ANDROID_ALARM_COMPAT_TO_NORM(cmd); + break; + } + + rv = alarm_do_ioctl(file, cmd, &ts); + + switch (ANDROID_ALARM_BASE_CMD(cmd)) { + case ANDROID_ALARM_GET_TIME(0): /* NOTE: we modified cmd above */ + if (compat_put_timespec(&ts, (void __user *)arg)) + return -EFAULT; + break; + } + + return rv; +} +#endif static int alarm_open(struct inode *inode, struct file *file) { @@ -355,6 +387,9 @@ static const struct file_operations alarm_fops = { .unlocked_ioctl = alarm_ioctl, .open = alarm_open, .release = alarm_release, +#ifdef CONFIG_COMPAT + .compat_ioctl = alarm_compat_ioctl, +#endif }; static struct miscdevice alarm_device = { diff --git a/drivers/staging/android/android_alarm.h b/drivers/staging/android/android_alarm.h index d0cafd63719..4fd32f337f9 100644 --- a/drivers/staging/android/android_alarm.h +++ b/drivers/staging/android/android_alarm.h @@ -18,6 +18,7 @@ #include <linux/ioctl.h> #include <linux/time.h> +#include <linux/compat.h> enum android_alarm_type { /* return code bit numbers or set alarm arg */ @@ -59,4 +60,22 @@ enum android_alarm_return_flags { #define ANDROID_ALARM_BASE_CMD(cmd) (cmd & ~(_IOC(0, 0, 0xf0, 0))) #define ANDROID_ALARM_IOCTL_TO_TYPE(cmd) (_IOC_NR(cmd) >> 4) + +#ifdef CONFIG_COMPAT +#define ANDROID_ALARM_SET_COMPAT(type) ALARM_IOW(2, type, \ + struct compat_timespec) +#define ANDROID_ALARM_SET_AND_WAIT_COMPAT(type) ALARM_IOW(3, type, \ + struct compat_timespec) +#define ANDROID_ALARM_GET_TIME_COMPAT(type) ALARM_IOW(4, type, \ + struct compat_timespec) +#define ANDROID_ALARM_SET_RTC_COMPAT _IOW('a', 5, \ + struct compat_timespec) +#define ANDROID_ALARM_IOCTL_NR(cmd) (_IOC_NR(cmd) & ((1<<4)-1)) +#define ANDROID_ALARM_COMPAT_TO_NORM(cmd) \ + ALARM_IOW(ANDROID_ALARM_IOCTL_NR(cmd), \ + ANDROID_ALARM_IOCTL_TO_TYPE(cmd), \ + struct timespec) + +#endif + #endif |