Commit 455ce1c7 authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Linus Torvalds
Browse files

selftests: add tests for efivarfs



This change adds a few initial efivarfs tests to the
tools/testing/selftests directory.

The open-unlink test is based on code from Lingzhu Xiang.
Signed-off-by: default avatarJeremy Kerr <jk@ozlabs.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Lingzhu Xiang <lxiang@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent dfe2a77f
TARGETS = breakpoints kcmp mqueue vm cpu-hotplug memory-hotplug TARGETS = breakpoints kcmp mqueue vm cpu-hotplug memory-hotplug efivarfs
all: all:
for TARGET in $(TARGETS); do \ for TARGET in $(TARGETS); do \
......
CC = $(CROSS_COMPILE)gcc
CFLAGS = -Wall
test_objs = open-unlink
all: $(test_objs)
run_tests: all
@/bin/bash ./efivarfs.sh || echo "efivarfs selftests: [FAIL]"
clean:
rm -f $(test_objs)
#!/bin/bash
efivarfs_mount=/sys/firmware/efi/efivars
test_guid=210be57c-9849-4fc7-a635-e6382d1aec27
check_prereqs()
{
local msg="skip all tests:"
if [ $UID != 0 ]; then
echo $msg must be run as root >&2
exit 0
fi
if ! grep -q "^\S\+ $efivarfs_mount efivarfs" /proc/mounts; then
echo $msg efivarfs is not mounted on $efivarfs_mount >&2
exit 0
fi
}
run_test()
{
local test="$1"
echo "--------------------"
echo "running $test"
echo "--------------------"
if [ "$(type -t $test)" = 'function' ]; then
( $test )
else
( ./$test )
fi
if [ $? -ne 0 ]; then
echo " [FAIL]"
rc=1
else
echo " [PASS]"
fi
}
test_create()
{
local attrs='\x07\x00\x00\x00'
local file=$efivarfs_mount/$FUNCNAME-$test_guid
printf "$attrs\x00" > $file
if [ ! -e $file ]; then
echo "$file couldn't be created" >&2
exit 1
fi
if [ $(stat -c %s $file) -ne 5 ]; then
echo "$file has invalid size" >&2
exit 1
fi
}
test_delete()
{
local attrs='\x07\x00\x00\x00'
local file=$efivarfs_mount/$FUNCNAME-$test_guid
printf "$attrs\x00" > $file
if [ ! -e $file ]; then
echo "$file couldn't be created" >&2
exit 1
fi
rm $file
if [ -e $file ]; then
echo "$file couldn't be deleted" >&2
exit 1
fi
}
# test that we can remove a variable by issuing a write with only
# attributes specified
test_zero_size_delete()
{
local attrs='\x07\x00\x00\x00'
local file=$efivarfs_mount/$FUNCNAME-$test_guid
printf "$attrs\x00" > $file
if [ ! -e $file ]; then
echo "$file does not exist" >&2
exit 1
fi
printf "$attrs" > $file
if [ -e $file ]; then
echo "$file should have been deleted" >&2
exit 1
fi
}
test_open_unlink()
{
local file=$efivarfs_mount/$FUNCNAME-$test_guid
./open-unlink $file
}
check_prereqs
rc=0
run_test test_create
run_test test_delete
run_test test_zero_size_delete
run_test test_open_unlink
exit $rc
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(int argc, char **argv)
{
const char *path;
char buf[5];
int fd, rc;
if (argc < 2) {
fprintf(stderr, "usage: %s <path>\n", argv[0]);
return EXIT_FAILURE;
}
path = argv[1];
/* attributes: EFI_VARIABLE_NON_VOLATILE |
* EFI_VARIABLE_BOOTSERVICE_ACCESS |
* EFI_VARIABLE_RUNTIME_ACCESS
*/
*(uint32_t *)buf = 0x7;
buf[4] = 0;
/* create a test variable */
fd = open(path, O_WRONLY | O_CREAT);
if (fd < 0) {
perror("open(O_WRONLY)");
return EXIT_FAILURE;
}
rc = write(fd, buf, sizeof(buf));
if (rc != sizeof(buf)) {
perror("write");
return EXIT_FAILURE;
}
close(fd);
fd = open(path, O_RDONLY);
if (fd < 0) {
perror("open");
return EXIT_FAILURE;
}
if (unlink(path) < 0) {
perror("unlink");
return EXIT_FAILURE;
}
rc = read(fd, buf, sizeof(buf));
if (rc > 0) {
fprintf(stderr, "reading from an unlinked variable "
"shouldn't be possible\n");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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