Commit f2b79ce9 authored by Dillon Amburgey's avatar Dillon Amburgey Committed by Riku Voipio
Browse files

linux-user: Support setgroups syscall with no groups 



Signed-off-by: default avatarDillon Amburgey <dillona@dillona.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRiku Voipio <riku.voipio@linaro.org>
parent bfb669f3

linux-user/syscall.c

+12 −10
Original line number Diff line number Diff line
@@ -7680,18 +7680,20 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 
        {

            int gidsetsize = arg1;

            target_id *target_grouplist;

            gid_t *grouplist;

            gid_t *grouplist = NULL;

            int i;



            if (gidsetsize) {

                grouplist = alloca(gidsetsize * sizeof(gid_t));

                target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 2, 1);

                if (!target_grouplist) {

                    ret = -TARGET_EFAULT;

                    goto fail;

                }

            for(i = 0;i < gidsetsize; i++)

                for (i = 0; i < gidsetsize; i++) {

                    grouplist[i] = low2highgid(tswapid(target_grouplist[i]));

                }

                unlock_user(target_grouplist, arg2, 0);

            }

            ret = get_errno(setgroups(gidsetsize, grouplist));

        }

        break;