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author | Ingo Molnar <mingo@elte.hu> | 2008-10-19 19:04:47 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-19 19:04:47 +0200 |
commit | 3e10e879a8c334a5927d800a3663a24d562cfa31 (patch) | |
tree | 5d18bc7e38c986a044e99aa0d0a4aff4931ec7d0 /kernel/compat.c | |
parent | 98d9c66ab07471006fd7910cb16453581c41a3e7 (diff) | |
parent | 0cfd81031a26717fe14380d18275f8e217571615 (diff) | |
download | op-kernel-dev-3e10e879a8c334a5927d800a3663a24d562cfa31.zip op-kernel-dev-3e10e879a8c334a5927d800a3663a24d562cfa31.tar.gz |
Merge branch 'linus' into tracing-v28-for-linus-v3
Conflicts:
init/main.c
kernel/module.c
scripts/bootgraph.pl
Diffstat (limited to 'kernel/compat.c')
-rw-r--r-- | kernel/compat.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/kernel/compat.c b/kernel/compat.c index 32c254a..143990e 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -26,6 +26,64 @@ #include <asm/uaccess.h> +/* + * Note that the native side is already converted to a timespec, because + * that's what we want anyway. + */ +static int compat_get_timeval(struct timespec *o, + struct compat_timeval __user *i) +{ + long usec; + + if (get_user(o->tv_sec, &i->tv_sec) || + get_user(usec, &i->tv_usec)) + return -EFAULT; + o->tv_nsec = usec * 1000; + return 0; +} + +static int compat_put_timeval(struct compat_timeval __user *o, + struct timeval *i) +{ + return (put_user(i->tv_sec, &o->tv_sec) || + put_user(i->tv_usec, &o->tv_usec)) ? -EFAULT : 0; +} + +asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, + struct timezone __user *tz) +{ + if (tv) { + struct timeval ktv; + do_gettimeofday(&ktv); + if (compat_put_timeval(tv, &ktv)) + return -EFAULT; + } + if (tz) { + if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) + return -EFAULT; + } + + return 0; +} + +asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, + struct timezone __user *tz) +{ + struct timespec kts; + struct timezone ktz; + + if (tv) { + if (compat_get_timeval(&kts, tv)) + return -EFAULT; + } + if (tz) { + if (copy_from_user(&ktz, tz, sizeof(ktz))) + return -EFAULT; + } + + return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); +} + int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts) { return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) || |