xnu-4570.41.2.tar.gz

[apple/xnu.git] / bsd / kern / kern_proc.c

diff --git a/bsd/kern/kern_proc.c b/bsd/kern/kern_proc.c
index 83bd75cd2d8dffa88363cacf6860269c23ac2226..249d8c3553db97e05dd327b1e416b8b5d2ade481 100644 (file)
--- a/bsd/kern/kern_proc.c
+++ b/bsd/kern/kern_proc.c
@@ -112,6 +112,10 @@
 #include <sys/bsdtask_info.h>
 #include <sys/persona.h>
 
+#ifdef CONFIG_32BIT_TELEMETRY
+#include <sys/kasl.h>
+#endif /* CONFIG_32BIT_TELEMETRY */
+
 #if CONFIG_CSR
 #include <sys/csr.h>
 #endif
@@ -126,6 +130,10 @@
 
 #include <libkern/crypto/sha1.h>
 
+#ifdef CONFIG_32BIT_TELEMETRY
+#define MAX_32BIT_EXEC_SIG_SIZE 160
+#endif /* CONFIG_32BIT_TELEMETRY */
+
 /*
  * Structure associated with user cacheing.
  */
@@ -1155,7 +1163,7 @@ proc_getexecutablevnode(proc_t p)
                if (vnode_getwithref(tvp) == 0) {
                        return tvp;
                }
-       }       
+       }
 
        return NULLVP;
 }
@@ -3431,3 +3439,80 @@ proc_get_uthread_uu_threadlist(void * uthread_v)
        uthread_t uth = (uthread_t)uthread_v;
        return (uth != NULL) ? uth->uu_threadlist : NULL;
 }
+
+#ifdef CONFIG_32BIT_TELEMETRY
+void
+proc_log_32bit_telemetry(proc_t p)
+{
+       /* Gather info */
+       char signature_buf[MAX_32BIT_EXEC_SIG_SIZE] = { 0 };
+       char * signature_cur_end = &signature_buf[0];
+       char * signature_buf_end = &signature_buf[MAX_32BIT_EXEC_SIG_SIZE - 1];
+       int bytes_printed = 0;
+
+       const char * teamid = NULL;
+       const char * identity = NULL;
+       struct cs_blob * csblob = NULL;
+
+       proc_list_lock();
+
+       /*
+        * Get proc name and parent proc name; if the parent execs, we'll get a
+        * garbled name.
+        */
+       bytes_printed = snprintf(signature_cur_end,
+                                signature_buf_end - signature_cur_end,
+                                "%s,%s,", p->p_name,
+                                (p->p_pptr ? p->p_pptr->p_name : ""));
+
+       if (bytes_printed > 0) {
+               signature_cur_end += bytes_printed;
+       }
+
+       proc_list_unlock();
+
+       /* Get developer info. */
+       vnode_t v = proc_getexecutablevnode(p);
+
+       if (v) {
+               csblob = csvnode_get_blob(v, 0);
+
+               if (csblob) {
+                       teamid = csblob_get_teamid(csblob);
+                       identity = csblob_get_identity(csblob);
+               }
+       }
+
+       if (teamid == NULL) {
+               teamid = "";
+       }
+
+       if (identity == NULL) {
+               identity = "";
+       }
+
+       bytes_printed = snprintf(signature_cur_end,
+                                signature_buf_end - signature_cur_end,
+                                "%s,%s", teamid, identity);
+
+       if (bytes_printed > 0) {
+               signature_cur_end += bytes_printed;
+       }
+
+       if (v) {
+               vnode_put(v);
+       }
+
+       /*
+        * We may want to rate limit here, although the SUMMARIZE key should
+        * help us aggregate events in userspace.
+        */
+
+       /* Emit log */
+       kern_asl_msg(LOG_DEBUG, "messagetracer", 3,
+       /* 0 */ "com.apple.message.domain", "com.apple.kernel.32bit_exec",
+       /* 1 */ "com.apple.message.signature", signature_buf,
+       /* 2 */ "com.apple.message.summarize", "YES",
+               NULL);
+}
+#endif /* CONFIG_32BIT_TELEMETRY */