Allow any syscall to be blacklisted (#1447)

Allow any syscall to be blacklisted with aid of LD_PRELOAD library,
libpostexecseccomp.so.

Closes: #1447

1 files changed, 6 insertions, 3 deletions

diff --git a/src/fseccomp/seccomp_file.c b/src/fseccomp/seccomp_file.c
index 16ffd5302..2d5ee115d 100644
--- a/src/fseccomp/seccomp_file.c
+++ b/src/fseccomp/seccomp_file.c
@@ -60,8 +60,9 @@ void filter_init(int fd) {
         write_to_file(fd, filter, sizeof(filter));
 }
 
-void filter_add_whitelist(int fd, int syscall, int arg) {
+void filter_add_whitelist(int fd, int syscall, int arg, void *ptrarg) {
         (void) arg;
+        (void) ptrarg;
 
         struct sock_filter filter[] = {
                 WHITELIST(syscall)
@@ -69,8 +70,9 @@ void filter_add_whitelist(int fd, int syscall, int arg) {
         write_to_file(fd, filter, sizeof(filter));
 }
 
-void filter_add_blacklist(int fd, int syscall, int arg) {
+void filter_add_blacklist(int fd, int syscall, int arg, void *ptrarg) {
         (void) arg;
+        (void) ptrarg;
 
         struct sock_filter filter[] = {
                 BLACKLIST(syscall)
@@ -78,7 +80,8 @@ void filter_add_blacklist(int fd, int syscall, int arg) {
         write_to_file(fd, filter, sizeof(filter));
 }
 
-void filter_add_errno(int fd, int syscall, int arg) {
+void filter_add_errno(int fd, int syscall, int arg, void *ptrarg) {
+        (void) ptrarg;
         struct sock_filter filter[] = {
                 BLACKLIST_ERRNO(syscall, arg)
         };