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linux-user: zero fstat buffer to initialize nsec fields 

The fstat implementation does not initialize the nanosecond fields in the
stat buffer; this caused funny values to turn up there, preventing, for
instance, cp -p from preserving timestamps because utimensat rejected
the out-of-bounds nanosecond values. Resetting the entire structure
to zero fixes that.

Signed-off-by: Ulrich Hecht <uli@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
This commit is contained in:
Ulrich Hecht 2009-07-24 19:10:32 +02:00 committed by Riku Voipio
parent e72d2cc781
commit 12727917db
1 changed files with 1 additions and 0 deletions
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linux-user/syscall.c
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@ -5529,6 +5529,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
goto efault; goto efault;
memset(target_st, 0, sizeof(*target_st));
__put_user(st.st_dev, &target_st->st_dev); __put_user(st.st_dev, &target_st->st_dev);
__put_user(st.st_ino, &target_st->st_ino); __put_user(st.st_ino, &target_st->st_ino);
__put_user(st.st_mode, &target_st->st_mode); __put_user(st.st_mode, &target_st->st_mode);