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Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse Source 
Pull misc vfs updates from Al Viro:
 "All kinds of misc stuff, without any unifying topic, from various
  people.

  Neil's d_anon patch, several bugfixes, introduction of kvmalloc
  analogue of kmemdup_user(), extending bitfield.h to deal with
  fixed-endians, assorted cleanups all over the place..."

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (28 commits)
  alpha: osf_sys.c: use timespec64 where appropriate
  alpha: osf_sys.c: fix put_tv32 regression
  jffs2: Fix use-after-free bug in jffs2_iget()'s error handling path
  dcache: delete unused d_hash_mask
  dcache: subtract d_hash_shift from 32 in advance
  fs/buffer.c: fold init_buffer() into init_page_buffers()
  fs: fold __inode_permission() into inode_permission()
  fs: add RWF_APPEND
  sctp: use vmemdup_user() rather than badly open-coding memdup_user()
  snd_ctl_elem_init_enum_names(): switch to vmemdup_user()
  replace_user_tlv(): switch to vmemdup_user()
  new primitive: vmemdup_user()
  memdup_user(): switch to GFP_USER
  eventfd: fold eventfd_ctx_get() into eventfd_ctx_fileget()
  eventfd: fold eventfd_ctx_read() into eventfd_read()
  eventfd: convert to use anon_inode_getfd()
  nfs4file: get rid of pointless include of btrfs.h
  uvc_v4l2: clean copyin/copyout up
  vme_user: don't use __copy_..._user()
  usx2y: don't bother with memdup_user() for 16-byte structure
  ...
This commit is contained in:
Linus Torvalds
2018-01-31 09:25:20 -08:00
parent 26064ea409 ce4c253573
commit 19e7b5f994
28 changed files with 297 additions and 404 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
arch/alpha/kernel/osf_sys.c
View File

@@ -950,22 +950,31 @@ struct itimerval32
};
static inline long
get_tv32(struct timeval *o, struct timeval32 __user *i)
get_tv32(struct timespec64 *o, struct timeval32 __user *i)
{
struct timeval32 tv;
if (copy_from_user(&tv, i, sizeof(struct timeval32)))
return -EFAULT;
o->tv_sec = tv.tv_sec;
o->tv_usec = tv.tv_usec;
o->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
return 0;
}
static inline long
put_tv32(struct timeval32 __user *o, struct timeval *i)
put_tv32(struct timeval32 __user *o, struct timespec64 *i)
{
return copy_to_user(o, &(struct timeval32){
.tv_sec = o->tv_sec,
.tv_usec = o->tv_usec},
.tv_sec = i->tv_sec,
.tv_usec = i->tv_nsec / NSEC_PER_USEC},
sizeof(struct timeval32));
}
static inline long
put_tv_to_tv32(struct timeval32 __user *o, struct timeval *i)
{
return copy_to_user(o, &(struct timeval32){
.tv_sec = i->tv_sec,
.tv_usec = i->tv_usec},
sizeof(struct timeval32));
}
@@ -1004,9 +1013,10 @@ SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
struct timezone __user *, tz)
{
if (tv) {
struct timeval ktv;
do_gettimeofday(&ktv);
if (put_tv32(tv, &ktv))
struct timespec64 kts;
ktime_get_real_ts64(&kts);
if (put_tv32(tv, &kts))
return -EFAULT;
}
if (tz) {
@@ -1019,22 +1029,19 @@ SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
struct timezone __user *, tz)
{
struct timespec64 kts64;
struct timespec kts;
struct timespec64 kts;
struct timezone ktz;
if (tv) {
if (get_tv32((struct timeval *)&kts, tv))
if (get_tv32(&kts, tv))
return -EFAULT;
kts.tv_nsec *= 1000;
kts64 = timespec_to_timespec64(kts);
}
if (tz) {
if (copy_from_user(&ktz, tz, sizeof(*tz)))
return -EFAULT;
}
return do_sys_settimeofday64(tv ? &kts64 : NULL, tz ? &ktz : NULL);
return do_sys_settimeofday64(tv ? &kts : NULL, tz ? &ktz : NULL);
}
asmlinkage long sys_ni_posix_timers(void);
@@ -1083,22 +1090,16 @@ SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
struct timeval32 __user *, tvs)
{
struct timespec tv[2];
struct timespec64 tv[2];
if (tvs) {
struct timeval ktvs[2];
if (get_tv32(&ktvs[0], &tvs[0]) ||
get_tv32(&ktvs[1], &tvs[1]))
if (get_tv32(&tv[0], &tvs[0]) ||
get_tv32(&tv[1], &tvs[1]))
return -EFAULT;
if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
if (tv[0].tv_nsec < 0 || tv[0].tv_nsec >= 1000000000 ||
tv[1].tv_nsec < 0 || tv[1].tv_nsec >= 1000000000)
return -EINVAL;
tv[0].tv_sec = ktvs[0].tv_sec;
tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
tv[1].tv_sec = ktvs[1].tv_sec;
tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
}
return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
@@ -1107,19 +1108,18 @@ SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
fd_set __user *, exp, struct timeval32 __user *, tvp)
{
struct timespec end_time, *to = NULL;
struct timespec64 end_time, *to = NULL;
if (tvp) {
struct timeval tv;
struct timespec64 tv;
to = &end_time;
if (get_tv32(&tv, tvp))
return -EFAULT;
if (tv.tv_sec < 0 || tv.tv_usec < 0)
if (tv.tv_sec < 0 || tv.tv_nsec < 0)
return -EINVAL;
if (poll_select_set_timeout(to, tv.tv_sec,
tv.tv_usec * NSEC_PER_USEC))
if (poll_select_set_timeout(to, tv.tv_sec, tv.tv_nsec))
return -EINVAL;
}
@@ -1192,9 +1192,9 @@ SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
return -EFAULT;
if (!ur)
return err;
if (put_tv32(&ur->ru_utime, &r.ru_utime))
if (put_tv_to_tv32(&ur->ru_utime, &r.ru_utime))
return -EFAULT;
if (put_tv32(&ur->ru_stime, &r.ru_stime))
if (put_tv_to_tv32(&ur->ru_stime, &r.ru_stime))
return -EFAULT;
if (copy_to_user(&ur->ru_maxrss, &r.ru_maxrss,
sizeof(struct rusage32) - offsetof(struct rusage32, ru_maxrss)))
@@ -1210,18 +1210,18 @@ SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
struct timeval32 __user *, remain)
{
struct timeval tmp;
struct timespec64 tmp;
unsigned long ticks;
if (get_tv32(&tmp, sleep))
goto fault;
ticks = timeval_to_jiffies(&tmp);
ticks = timespec64_to_jiffies(&tmp);
ticks = schedule_timeout_interruptible(ticks);
if (remain) {
jiffies_to_timeval(ticks, &tmp);
jiffies_to_timespec64(ticks, &tmp);
if (put_tv32(remain, &tmp))
goto fault;
}
@@ -1280,7 +1280,7 @@ SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
(copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) -
offsetof(struct timex32, tick))) ||
(put_tv32(&txc_p->time, &txc.time)))
(put_tv_to_tv32(&txc_p->time, &txc.time)))
return -EFAULT;
return ret;