diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-02-26 22:37:22 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-02-26 22:37:29 +0100 |
| commit | 1dcec254afe5bc700a4cacf810b71a28bd994ea9 (patch) | |
| tree | f96d7fbd9f1fba0701e3648d2b5d82f3938353f8 /arch/s390/lib | |
| parent | 68c6b859846bd078b37c6ca5f3882032f129e72d (diff) | |
[S390] uaccess: implement strict user copy checks
Same as on x86 and sparc, besides the fact that enabling the option
will just emit compile time warnings instead of errors.
Keeps allyesconfig kernels compiling.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/lib')
| -rw-r--r-- | arch/s390/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/lib/usercopy.c | 8 |
2 files changed, 9 insertions, 1 deletions
diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile index 97975ec7a274..cd54a1c352af 100644 --- a/arch/s390/lib/Makefile +++ b/arch/s390/lib/Makefile @@ -2,7 +2,7 @@ # Makefile for s390-specific library files.. # -lib-y += delay.o string.o uaccess_std.o uaccess_pt.o +lib-y += delay.o string.o uaccess_std.o uaccess_pt.o usercopy.o obj-$(CONFIG_32BIT) += div64.o qrnnd.o ucmpdi2.o lib-$(CONFIG_64BIT) += uaccess_mvcos.o lib-$(CONFIG_SMP) += spinlock.o diff --git a/arch/s390/lib/usercopy.c b/arch/s390/lib/usercopy.c new file mode 100644 index 000000000000..14b363fec8a2 --- /dev/null +++ b/arch/s390/lib/usercopy.c @@ -0,0 +1,8 @@ +#include <linux/module.h> +#include <linux/bug.h> + +void copy_from_user_overflow(void) +{ + WARN(1, "Buffer overflow detected!\n"); +} +EXPORT_SYMBOL(copy_from_user_overflow); |