diff options
| -rw-r--r-- | CMakeLists.txt | 7 | ||||
| -rw-r--r-- | service/instance.c | 15 | ||||
| -rw-r--r-- | service/setlbf.c | 6 |
3 files changed, 25 insertions, 3 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index dfa9413..6af17a3 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -10,6 +10,13 @@ IF(APPLE) LINK_DIRECTORIES(/opt/local/lib) ENDIF() + +ADD_LIBRARY(setlbf SHARED service/setlbf.c) +INSTALL(TARGETS setlbf + LIBRARY DESTINATION lib +) + + SET(SOURCES procd.c signal.c watchdog.c state.c inittab.c rcS.c ubus.c system.c service/service.c service/instance.c service/validate.c service/trigger.c service/watch.c plug/coldplug.c plug/hotplug.c utils/utils.c) diff --git a/service/instance.c b/service/instance.c index 35b2def..40ff021 100644 --- a/service/instance.c +++ b/service/instance.c @@ -12,6 +12,7 @@ * GNU General Public License for more details. */ +#define _GNU_SOURCE #include <sys/resource.h> #include <sys/types.h> #include <sys/socket.h> @@ -19,6 +20,7 @@ #include <net/if.h> #include <unistd.h> #include <stdint.h> +#include <stdio.h> #include <fcntl.h> #include <pwd.h> #include <libgen.h> @@ -224,8 +226,11 @@ instance_run(struct service_instance *in, int _stdout, int _stderr) struct blobmsg_list_node *var; struct blob_attr *cur; char **argv; + char *ld_preload; int argc = 1; /* NULL terminated */ int rem, _stdin; + bool seccomp = !in->trace && !in->has_jail && in->seccomp; + bool setlbf = _stdout >= 0; if (in->nice) setpriority(PRIO_PROCESS, 0, in->nice); @@ -236,10 +241,14 @@ instance_run(struct service_instance *in, int _stdout, int _stderr) blobmsg_list_for_each(&in->env, var) setenv(blobmsg_name(var->data), blobmsg_data(var->data), 1); - if (!in->trace && !in->has_jail && in->seccomp) { + if (seccomp) setenv("SECCOMP_FILE", in->seccomp, 1); - setenv("LD_PRELOAD", "/lib/libpreload-seccomp.so", 1); - } + + if ((seccomp || setlbf) && asprintf(&ld_preload, "LD_PRELOAD=%s%s%s", + seccomp ? "/lib/libpreload-seccomp.so" : "", + seccomp && setlbf ? ":" : "", + setlbf ? "/lib/libsetlbf.so" : "") > 0) + putenv(ld_preload); blobmsg_list_for_each(&in->limits, var) instance_limits(blobmsg_name(var->data), blobmsg_data(var->data)); diff --git a/service/setlbf.c b/service/setlbf.c new file mode 100644 index 0000000..94c251e --- /dev/null +++ b/service/setlbf.c @@ -0,0 +1,6 @@ +#include <stdio.h> + +static void __attribute__((constructor)) setlbf(void) +{ + setbuf(stdout, NULL); +} |