start of illumos cpu binding implementation.

The current user needs the proc_owner permission, not something doable
 via the settings script.

GNUmakefile

@@ -58,6 +58,11 @@ ifneq "$(shell uname)" "Darwin"
  CFLAGS_OPT += -D_FORTIFY_SOURCE=2
 endif
 
+ifeq "$(shell uname)" "SunOS"
+ CFLAGS_OPT += -Wno-format-truncation
+ LDFLAGS=-lkstat
+endif
+
 ifdef STATIC
   $(info Compiling static version of binaries)
   # Disable python for static compilation to simplify things

include/afl-fuzz.h

@@ -83,7 +83,7 @@
    can hope... */
 
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || \
-    defined(__DragonFly__)
+    defined(__DragonFly__) || defined(__sun)
   #define HAVE_AFFINITY 1
   #if defined(__FreeBSD__) || defined(__DragonFly__)
     #include <sys/param.h>
@@ -96,6 +96,11 @@
     #define cpu_set_t cpuset_t
   #elif defined(__NetBSD__)
     #include <pthread.h>
+  #elif defined(__sun)
+    #include <sys/types.h>
+    #include <kstat.h>
+    #include <sys/sysinfo.h>
+    #include <sys/pset.h>
   #endif
 #endif                                                         /* __linux__ */
 

src/afl-fuzz-init.c

@@ -37,6 +37,8 @@ void bind_to_free_cpu(afl_state_t *afl) {
   cpu_set_t c;
   #elif defined(__NetBSD__)
   cpuset_t *         c;
+  #elif defined(__sun)
+  psetid_t c;
   #endif
 
   u8  cpu_used[4096] = {0};
@@ -181,6 +183,58 @@ void bind_to_free_cpu(afl_state_t *afl) {
   }
 
   ck_free(procs);
+  #elif defined(__sun)
+  kstat_named_t *n;
+  kstat_ctl_t *m;
+  kstat_t *k;
+  cpu_stat_t cs;
+  u32 ncpus;
+
+  m = kstat_open();
+
+  if (!m) FATAL("kstat_open failed");
+
+  k = kstat_lookup(m, "unix", 0, "system_misc");
+
+  if (!k) {
+
+    kstat_close(m);
+    return;
+
+  }
+
+  if (kstat_read(m, k, NULL)) {
+
+    kstat_close(m);
+    return;
+
+  }
+
+  n = kstat_data_lookup(k, "ncpus");
+  ncpus = n->value.i32;
+
+  if (ncpus > sizeof(cpu_used))
+	  ncpus = sizeof(cpu_used);
+
+  for (i = 0; i < ncpus; i ++) {
+
+    k = kstat_lookup(m, "cpu_stat", i, NULL);
+    if (kstat_read(m, k, &cs)) {
+
+      kstat_close(m);
+      return;
+
+    }
+
+    if (cs.cpu_sysinfo.cpu[CPU_IDLE] > 0)
+      continue;
+
+    if (cs.cpu_sysinfo.cpu[CPU_USER] > 0 || cs.cpu_sysinfo.cpu[CPU_KERNEL] > 0)
+      cpu_used[i] = 1;
+
+  }
+
+  kstat_close(m);
   #else
     #warning \
         "For this platform we do not have free CPU binding code yet. If possible, please supply a PR to https://github.com/AFLplusplus/AFLplusplus"
@@ -189,7 +243,7 @@ void bind_to_free_cpu(afl_state_t *afl) {
   size_t cpu_start = 0;
 
   try:
-  #ifndef __ANDROID__
+  #if !defined(__ANDROID__)
     for (i = cpu_start; i < afl->cpu_core_count; i++) {
 
       if (!cpu_used[i]) { break; }
@@ -228,6 +282,9 @@ void bind_to_free_cpu(afl_state_t *afl) {
   c = cpuset_create();
   if (c == NULL) PFATAL("cpuset_create failed");
   cpuset_set(i, c);
+  #elif defined(__sun)
+  pset_create(&c);
+  if (pset_assign(c, i, NULL)) PFATAL("pset_assign failed");
   #endif
 
   #if defined(__linux__)
@@ -271,6 +328,19 @@ if (pthread_setaffinity_np(pthread_self(), cpuset_size(c), c)) {
   }
 
   cpuset_destroy(c);
+  #elif defined(__sun)
+  if (pset_bind(c, P_PID, getpid(), NULL)) {
+
+    if (cpu_start == afl->cpu_core_count)
+      PFATAL("pset_bind failed for cpu %d, exit", i);
+    WARNF("pthread_setaffinity failed to CPU %d, trying next CPU", i);
+    cpu_start++;
+    goto try
+      ;
+
+  }
+
+  pset_destroy(c);
   #else
   // this will need something for other platforms
   // TODO: Solaris/Illumos has processor_bind ... might worth a try

src/afl-gotcpu.c

@@ -54,7 +54,7 @@
 #include "common.h"
 
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || \
-    defined(__APPLE__) || defined(__DragonFly__)
+    defined(__APPLE__) || defined(__DragonFly__) || defined(__sun)
   #define HAVE_AFFINITY 1
   #if defined(__FreeBSD__) || defined(__DragonFly__)
     #include <pthread.h>
@@ -70,6 +70,8 @@
     #include <pthread.h>
     #include <mach/thread_act.h>
     #include <mach/thread_policy.h>
+  #elif defined(__sun)
+    #include <sys/pset.h>
   #endif
 #endif               /* __linux__ || __FreeBSD__ || __NetBSD__ || __APPLE__ */
 
@@ -181,6 +183,12 @@ int main(int argc, char **argv) {
       if (thread_policy_set(native_thread, THREAD_AFFINITY_POLICY,
                             (thread_policy_t)&c, 1) != KERN_SUCCESS)
         PFATAL("thread_policy_set failed");
+  #elif defined(__sun)
+      psetid_t c;
+
+      if (pset_create(&c)) PFATAL("pset_create failed");
+
+      if (pset_assign(c, i, NULL)) PFATAL("pset_assign failed");
   #endif
 
   #if defined(__FreeBSD__) || defined(__DragonFly__)
@@ -195,6 +203,13 @@ int main(int argc, char **argv) {
       cpuset_destroy(c);
   #endif
 
+  #if defined(__sun)
+      if (pset_bind(c, P_PID, getpid(), NULL))
+        PFATAL("pset_bind failed");
+
+      pset_destroy(c);
+  #endif
+
   #if defined(__linux__)
       if (sched_setaffinity(0, sizeof(c), &c)) {