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fix dma-buf/udmabuf selftest

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This patch fixes the udmabuf selftest. Currently the selftest is broken.
I fixed the selftest by setting the F_SEAL_SHRINK seal on the memfd
file descriptor which is required by udmabuf and added the test to
the selftest Makefile.

Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Shuah Khan <shuah@kernel.org>
This commit is contained in:
Tom Murphy 2018-11-27 10:33:08 +00:00 committed by Shuah Khan
parent 0ca2923e2a
commit 6edf2e3710
3 changed files with 12 additions and 2 deletions
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1
tools/testing/selftests/Makefile
View File

@ -6,6 +6,7 @@ TARGETS += capabilities
TARGETS += cgroup
TARGETS += cpufreq
TARGETS += cpu-hotplug
TARGETS += drivers/dma-buf
TARGETS += efivarfs
TARGETS += exec
TARGETS += filesystems

2
tools/testing/selftests/drivers/dma-buf/Makefile
View File

@ -2,4 +2,6 @@ CFLAGS += -I../../../../../usr/include/
TEST_GEN_PROGS := udmabuf
top_srcdir ?=../../../../..
include ../../lib.mk

11
tools/testing/selftests/drivers/dma-buf/udmabuf.c
View File

@ -4,7 +4,7 @@
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <linux/fcntl.h>
#include <malloc.h>
#include <sys/ioctl.h>
@ -33,12 +33,19 @@ int main(int argc, char *argv[])
exit(77);
}
memfd = memfd_create("udmabuf-test", MFD_CLOEXEC);
memfd = memfd_create("udmabuf-test", MFD_ALLOW_SEALING);
if (memfd < 0) {
printf("%s: [skip,no-memfd]\n", TEST_PREFIX);
exit(77);
}
ret = fcntl(memfd, F_ADD_SEALS, F_SEAL_SHRINK);
if (ret < 0) {
printf("%s: [skip,fcntl-add-seals]\n", TEST_PREFIX);
exit(77);
}
size = getpagesize() * NUM_PAGES;
ret = ftruncate(memfd, size);
if (ret == -1) {