diff options
| author | Riku Voipio <riku.voipio@linaro.org> | 2014-08-12 15:58:57 +0300 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2014-08-22 15:06:34 +0300 |
| commit | 9af5c906d189d8f4aae902d75567639d2a8f4e22 (patch) | |
| tree | 46ddbea715bab06eba0eb1063f8565284f8420ef | |
| parent | ab31cda3270994ab7a59a3ed8d44029a52af95a3 (diff) | |
linux-user: add setns and unshare
Add support for the setns and unshare syscalls, trivially passed through to
the host. Based on patches by Paul Burton, added configure check.
Signed-off-by: Paul Burton <paul@archlinuxmips.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| -rwxr-xr-x | configure | 20 | ||||
| -rw-r--r-- | linux-user/strace.list | 3 | ||||
| -rw-r--r-- | linux-user/syscall.c | 11 |
3 files changed, 34 insertions, 0 deletions
@@ -3470,6 +3470,23 @@ if compile_prog "" "" ; then timerfd=yes fi +# check for setns and unshare support +setns=no +cat > $TMPC << EOF +#include <sched.h> + +int main(void) +{ + int ret; + ret = setns(0, 0); + ret = unshare(0); + return ret; +} +EOF +if compile_prog "" "" ; then + setns=yes +fi + # Check if tools are available to build documentation. if test "$docs" != "no" ; then if has makeinfo && has pod2man; then @@ -4541,6 +4558,9 @@ fi if test "$timerfd" = "yes" ; then echo "CONFIG_TIMERFD=y" >> $config_host_mak fi +if test "$setns" = "yes" ; then + echo "CONFIG_SETNS=y" >> $config_host_mak +fi if test "$inotify" = "yes" ; then echo "CONFIG_INOTIFY=y" >> $config_host_mak fi diff --git a/linux-user/strace.list b/linux-user/strace.list index 8de972a6ee..aa0cd735cc 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -1185,6 +1185,9 @@ #ifdef TARGET_NR_set_mempolicy { TARGET_NR_set_mempolicy, "set_mempolicy" , NULL, NULL, NULL }, #endif +#ifdef TARGET_NR_setns +{ TARGET_NR_setns, "setns" , NULL, NULL, NULL }, +#endif #ifdef TARGET_NR_setpgid { TARGET_NR_setpgid, "setpgid" , NULL, NULL, NULL }, #endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index f1c182bbae..dae10afcb8 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -9610,6 +9610,17 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #endif +#if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) + case TARGET_NR_setns: + ret = get_errno(setns(arg1, arg2)); + break; +#endif +#if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) + case TARGET_NR_unshare: + ret = get_errno(unshare(arg1)); + break; +#endif + default: unimplemented: gemu_log("qemu: Unsupported syscall: %d\n", num); |