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authorLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 14:00:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 14:00:59 -0800
commitceb307474506f888e8f16dab183405ff01dffa08 (patch)
tree27c1d2f3c553c85bd3529cbd44c0f690a77992ee /arch/alpha
parent0da522107e5d9c000a4871d52e570912aa1225a2 (diff)
parentb111df8447acdeb4b9220f99d5d4b28f83eb56ad (diff)
downloadlinux-ceb307474506f888e8f16dab183405ff01dffa08.tar.bz2
Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
Pull y2038 cleanups from Arnd Bergmann: "y2038 syscall implementation cleanups This is a series of cleanups for the y2038 work, mostly intended for namespace cleaning: the kernel defines the traditional time_t, timeval and timespec types that often lead to y2038-unsafe code. Even though the unsafe usage is mostly gone from the kernel, having the types and associated functions around means that we can still grow new users, and that we may be missing conversions to safe types that actually matter. There are still a number of driver specific patches needed to get the last users of these types removed, those have been submitted to the respective maintainers" Link: https://lore.kernel.org/lkml/20191108210236.1296047-1-arnd@arndb.de/ * tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground: (26 commits) y2038: alarm: fix half-second cut-off y2038: ipc: fix x32 ABI breakage y2038: fix typo in powerpc vdso "LOPART" y2038: allow disabling time32 system calls y2038: itimer: change implementation to timespec64 y2038: move itimer reset into itimer.c y2038: use compat_{get,set}_itimer on alpha y2038: itimer: compat handling to itimer.c y2038: time: avoid timespec usage in settimeofday() y2038: timerfd: Use timespec64 internally y2038: elfcore: Use __kernel_old_timeval for process times y2038: make ns_to_compat_timeval use __kernel_old_timeval y2038: socket: use __kernel_old_timespec instead of timespec y2038: socket: remove timespec reference in timestamping y2038: syscalls: change remaining timeval to __kernel_old_timeval y2038: rusage: use __kernel_old_timeval y2038: uapi: change __kernel_time_t to __kernel_old_time_t y2038: stat: avoid 'time_t' in 'struct stat' y2038: ipc: remove __kernel_time_t reference from headers y2038: vdso: powerpc: avoid timespec references ...
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/kernel/osf_sys.c67
-rw-r--r--arch/alpha/kernel/syscalls/syscall.tbl4
2 files changed, 3 insertions, 68 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index bf497b8b0ec6..94e4cde8071a 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -963,7 +963,7 @@ put_tv32(struct timeval32 __user *o, struct timespec64 *i)
}
static inline long
-put_tv_to_tv32(struct timeval32 __user *o, struct timeval *i)
+put_tv_to_tv32(struct timeval32 __user *o, struct __kernel_old_timeval *i)
{
return copy_to_user(o, &(struct timeval32){
.tv_sec = i->tv_sec,
@@ -971,30 +971,6 @@ put_tv_to_tv32(struct timeval32 __user *o, struct timeval *i)
sizeof(struct timeval32));
}
-static inline long
-get_it32(struct itimerval *o, struct itimerval32 __user *i)
-{
- struct itimerval32 itv;
- if (copy_from_user(&itv, i, sizeof(struct itimerval32)))
- return -EFAULT;
- o->it_interval.tv_sec = itv.it_interval.tv_sec;
- o->it_interval.tv_usec = itv.it_interval.tv_usec;
- o->it_value.tv_sec = itv.it_value.tv_sec;
- o->it_value.tv_usec = itv.it_value.tv_usec;
- return 0;
-}
-
-static inline long
-put_it32(struct itimerval32 __user *o, struct itimerval *i)
-{
- return copy_to_user(o, &(struct itimerval32){
- .it_interval.tv_sec = o->it_interval.tv_sec,
- .it_interval.tv_usec = o->it_interval.tv_usec,
- .it_value.tv_sec = o->it_value.tv_sec,
- .it_value.tv_usec = o->it_value.tv_usec},
- sizeof(struct itimerval32));
-}
-
static inline void
jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
{
@@ -1039,47 +1015,6 @@ SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
asmlinkage long sys_ni_posix_timers(void);
-SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
-{
- struct itimerval kit;
- int error;
-
- if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
- return sys_ni_posix_timers();
-
- error = do_getitimer(which, &kit);
- if (!error && put_it32(it, &kit))
- error = -EFAULT;
-
- return error;
-}
-
-SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
- struct itimerval32 __user *, out)
-{
- struct itimerval kin, kout;
- int error;
-
- if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
- return sys_ni_posix_timers();
-
- if (in) {
- if (get_it32(&kin, in))
- return -EFAULT;
- } else
- memset(&kin, 0, sizeof(kin));
-
- error = do_setitimer(which, &kin, out ? &kout : NULL);
- if (error || !out)
- return error;
-
- if (put_it32(out, &kout))
- return -EFAULT;
-
- return 0;
-
-}
-
SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
struct timeval32 __user *, tvs)
{
diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index 728fe028c02c..8e13b0b2928d 100644
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -89,10 +89,10 @@
80 common setgroups sys_setgroups
81 common osf_old_getpgrp sys_ni_syscall
82 common setpgrp sys_setpgid
-83 common osf_setitimer sys_osf_setitimer
+83 common osf_setitimer compat_sys_setitimer
84 common osf_old_wait sys_ni_syscall
85 common osf_table sys_ni_syscall
-86 common osf_getitimer sys_osf_getitimer
+86 common osf_getitimer compat_sys_getitimer
87 common gethostname sys_gethostname
88 common sethostname sys_sethostname
89 common getdtablesize sys_getdtablesize