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author | 2017-11-17 11:54:55 -0800 | |
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committer | 2017-11-17 11:54:55 -0800 | |
commit | 93f30c73ecd0281cf3685ef0e4e384980a176176 (patch) | |
tree | bd272334a0dbd258c08b5b2237e8bf5e17ce7255 /kernel/sched | |
parent | Merge branch 'for-linus' of git://git.kernel.dk/linux-block (diff) | |
parent | coredump: call do_unlinkat directly instead of sys_unlink (diff) | |
download | linux-93f30c73ecd0281cf3685ef0e4e384980a176176.tar.gz linux-93f30c73ecd0281cf3685ef0e4e384980a176176.tar.bz2 linux-93f30c73ecd0281cf3685ef0e4e384980a176176.zip |
Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull compat and uaccess updates from Al Viro:
- {get,put}_compat_sigset() series
- assorted compat ioctl stuff
- more set_fs() elimination
- a few more timespec64 conversions
- several removals of pointless access_ok() in places where it was
followed only by non-__ variants of primitives
* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
coredump: call do_unlinkat directly instead of sys_unlink
fs: expose do_unlinkat for built-in callers
ext4: take handling of EXT4_IOC_GROUP_ADD into a helper, get rid of set_fs()
ipmi: get rid of pointless access_ok()
pi433: sanitize ioctl
cxlflash: get rid of pointless access_ok()
mtdchar: get rid of pointless access_ok()
r128: switch compat ioctls to drm_ioctl_kernel()
selection: get rid of field-by-field copyin
VT_RESIZEX: get rid of field-by-field copyin
i2c compat ioctls: move to ->compat_ioctl()
sched_rr_get_interval(): move compat to native, get rid of set_fs()
mips: switch to {get,put}_compat_sigset()
sparc: switch to {get,put}_compat_sigset()
s390: switch to {get,put}_compat_sigset()
ppc: switch to {get,put}_compat_sigset()
parisc: switch to {get,put}_compat_sigset()
get_compat_sigset()
get rid of {get,put}_compat_itimerspec()
io_getevents: Use timespec64 to represent timeouts
...
Diffstat (limited to 'kernel/sched')
-rw-r--r-- | kernel/sched/core.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index a092f350f3a2..75554f366fd3 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -16,6 +16,7 @@ #include <linux/init_task.h> #include <linux/context_tracking.h> #include <linux/rcupdate_wait.h> +#include <linux/compat.h> #include <linux/blkdev.h> #include <linux/kprobes.h> @@ -5107,13 +5108,11 @@ SYSCALL_DEFINE1(sched_get_priority_min, int, policy) * Return: On success, 0 and the timeslice is in @interval. Otherwise, * an error code. */ -SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid, - struct timespec __user *, interval) +static int sched_rr_get_interval(pid_t pid, struct timespec64 *t) { struct task_struct *p; unsigned int time_slice; struct rq_flags rf; - struct timespec t; struct rq *rq; int retval; @@ -5137,15 +5136,40 @@ SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid, task_rq_unlock(rq, p, &rf); rcu_read_unlock(); - jiffies_to_timespec(time_slice, &t); - retval = copy_to_user(interval, &t, sizeof(t)) ? -EFAULT : 0; - return retval; + jiffies_to_timespec64(time_slice, t); + return 0; out_unlock: rcu_read_unlock(); return retval; } +SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid, + struct timespec __user *, interval) +{ + struct timespec64 t; + int retval = sched_rr_get_interval(pid, &t); + + if (retval == 0) + retval = put_timespec64(&t, interval); + + return retval; +} + +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval, + compat_pid_t, pid, + struct compat_timespec __user *, interval) +{ + struct timespec64 t; + int retval = sched_rr_get_interval(pid, &t); + + if (retval == 0) + retval = compat_put_timespec64(&t, interval); + return retval; +} +#endif + void sched_show_task(struct task_struct *p) { unsigned long free = 0; |