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s390/compat,signal: fix return value of copy_siginfo_(to|from)_user32()

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The return value of copy_siginfo_(to|from)_user32() gets passed to
user space, however we do not convert a positive return value from
copy_(to|from)_user to -EFAULT.
Therefore these functions (and the calling system calls) my incorrectly
return a positive number (bytes not copied) instead of -EFAULT.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2013-10-14 12:09:37 +02:00 committed by Martin Schwidefsky
parent 18d6624ec5
commit 0ebfd313fd
1 changed files with 2 additions and 2 deletions
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4
arch/s390/kernel/compat_signal.c
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@ -99,7 +99,7 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
break; break;
} }
} }
return err; return err ? -EFAULT : 0;
} }
int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
@ -148,7 +148,7 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
break; break;
} }
} }
return err; return err ? -EFAULT : 0;
} }
static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs) static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)