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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-05-31 11:22:44 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-10 06:51:28 +0300 |
| commit | ca2406ed58fef3f7c8ef6470cba807bfc3415605 (patch) | |
| tree | 54dbca16ac0a1b897d2a890f5487bcc4352e4e38 /kernel/sys.c | |
| parent | 1e1fc133483ef3b56c20bf3cd9241146c41042f8 (diff) | |
| download | linux-ca2406ed58fef3f7c8ef6470cba807bfc3415605.tar.xz | |
times(2): move compat to native
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 3778a8a417b6..161b5eae9c77 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -886,7 +886,7 @@ SYSCALL_DEFINE0(getegid) return from_kgid_munged(current_user_ns(), current_egid()); } -void do_sys_times(struct tms *tms) +static void do_sys_times(struct tms *tms) { u64 tgutime, tgstime, cutime, cstime; @@ -912,6 +912,32 @@ SYSCALL_DEFINE1(times, struct tms __user *, tbuf) return (long) jiffies_64_to_clock_t(get_jiffies_64()); } +#ifdef CONFIG_COMPAT +static compat_clock_t clock_t_to_compat_clock_t(clock_t x) +{ + return compat_jiffies_to_clock_t(clock_t_to_jiffies(x)); +} + +COMPAT_SYSCALL_DEFINE1(times, struct compat_tms __user *, tbuf) +{ + if (tbuf) { + struct tms tms; + struct compat_tms tmp; + + do_sys_times(&tms); + /* Convert our struct tms to the compat version. */ + tmp.tms_utime = clock_t_to_compat_clock_t(tms.tms_utime); + tmp.tms_stime = clock_t_to_compat_clock_t(tms.tms_stime); + tmp.tms_cutime = clock_t_to_compat_clock_t(tms.tms_cutime); + tmp.tms_cstime = clock_t_to_compat_clock_t(tms.tms_cstime); + if (copy_to_user(tbuf, &tmp, sizeof(tmp))) + return -EFAULT; + } + force_successful_syscall_return(); + return compat_jiffies_to_clock_t(jiffies); +} +#endif + /* * This needs some heavy checking ... * I just haven't the stomach for it. I also don't fully |