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authorHeiko Carstens <heiko.carstens@de.ibm.com>2013-10-14 12:09:37 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-10-15 13:47:59 +0200
commit0ebfd313fd4baf3fa1bd02d5f106e377595d4987 (patch)
tree22e157baf879135b96cab1f436813c110168e2e5 /arch
parent18d6624ec5e628fa35e46a5d69abfce3d5fea363 (diff)
downloadlinux-0ebfd313fd4baf3fa1bd02d5f106e377595d4987.tar.gz
s390/compat,signal: fix return value of copy_siginfo_(to|from)_user32()
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/compat_signal.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 1389b637dae..adaa9e9478d 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -99,7 +99,7 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
break;
}
}
- return err;
+ return err ? -EFAULT : 0;
}
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;
}
}
- return err;
+ return err ? -EFAULT : 0;
}
static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)