Cedric

Hi Cedric,
I encounter the following error in ubuntu14.04. Your patch
"syscall/getrandom: Add tests for getrandom" leads to the error.
Do I need to install new libraries?
Could you please check with the issue?
Thanks.
Yuan

make[4]: Entering directory `/home/s00318865/0625/ltp/testcases/kernel/syscalls/getrandom' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -W -g -O2 -Wold-style-definition -I/home/s00318865/0625/ltp/testcases/kernel/include
-I../../../../include -I../../../../include -L../../../../lib
getrandom01.c -lltp -o getrandom01
getrandom01.c:34:26: error: 'GRND_RANDOM' undeclared here (not in a function)
static int modes[] = {0, GRND_RANDOM, GRND_NONBLOCK,

                           ^
getrandom01.c:34:39: error: 'GRND_NONBLOCK' undeclared here (not in a 
function)
  static int modes[] = {0, GRND_RANDOM, GRND_NONBLOCK,
                                        ^
In file included from ../../../../include/test.h:46:0,
                  from getrandom01.c:32:
getrandom01.c: In function 'main':
getrandom01.c:51:17: error: 'SYS_getrandom' undeclared (first use in 
this function)
     TEST(syscall(SYS_getrandom, NULL, 100, modes[i]));
                  ^
../../../../include/usctest.h:69:17: note: in definition of macro 'TEST'
    TEST_RETURN = SCALL; \
                  ^
getrandom01.c:51:17: note: each undeclared identifier is reported only 
once for each function it appears in
     TEST(syscall(SYS_getrandom, NULL, 100, modes[i]));
                  ^
../../../../include/usctest.h:69:17: note: in definition of macro 'TEST'
    TEST_RETURN = SCALL; \
                  ^
getrandom01.c:51:4: warning: passing argument 1 of 'syscall' makes 
integer from pointer without a cast [enabled by default]
     TEST(syscall(SYS_getrandom, NULL, 100, modes[i]));
     ^
In file included from ../../../../include/test.h:39:0,
                  from getrandom01.c:32:
/usr/include/unistd.h:1058:17: note: expected 'long int' but argument is 
of type 'int *'
  extern long int syscall (long int __sysno, ...) __THROW;
                  ^

make[4]: *** [getrandom01] Error 1
make[4]: Leaving directory `/home/s00318865/0625/ltp/testcases/kernel/syscalls/getrandom' make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/s00318865/0625/ltp/testcases/kernel/syscalls' make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/s00318865/0625/ltp/testcases/kernel' make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/s00318865/0625/ltp/testcases'
make: *** [testcases-all] Error 2

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Try

apt-get install linux-libc-dev

Thanks,
Wanlong Gao

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Hi!

getrandom() was introduced in version 3.17 of the Linux kernel. Ubuntu 14.04 gets shipped with kernel 3.13.

Try to upgrade your kernel to a more recent version to get the syscall.

Best,
Cédric Hnyda

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Hi Cedric,
Thanks for your reminding. I understand.
Maybe it is better to add the following in these cases.

if (tst_kvercmp(3, 17, 0) < 0)

        tst_brkm(TCONF, NULL, "getrandom is not supported");

    Regards.
        Yuan

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Hi Wanlong,
It works well after install the lib.
Many thanks.
Yuan

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