diff options
Diffstat (limited to 'sys/kern/kern_exec.c')
| -rw-r--r-- | sys/kern/kern_exec.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index 22f1cc173071..81902adfc7d5 100644 --- a/sys/kern/kern_exec.c +++ b/sys/kern/kern_exec.c @@ -28,6 +28,7 @@ __FBSDID("$FreeBSD$"); #include "opt_hwpmc_hooks.h" +#include "opt_kdtrace.h" #include "opt_ktrace.h" #include "opt_mac.h" @@ -53,6 +54,7 @@ __FBSDID("$FreeBSD$"); #include <sys/pioctl.h> #include <sys/namei.h> #include <sys/resourcevar.h> +#include <sys/sdt.h> #include <sys/sf_buf.h> #include <sys/syscallsubr.h> #include <sys/sysent.h> @@ -82,6 +84,19 @@ __FBSDID("$FreeBSD$"); #include <security/audit/audit.h> #include <security/mac/mac_framework.h> +#ifdef KDTRACE_HOOKS +#include <sys/dtrace_bsd.h> +dtrace_execexit_func_t dtrace_fasttrap_exec; +#endif + +SDT_PROVIDER_DECLARE(proc); +SDT_PROBE_DEFINE(proc, kernel, , exec); +SDT_PROBE_ARGTYPE(proc, kernel, , exec, 0, "char *"); +SDT_PROBE_DEFINE(proc, kernel, , exec_failure); +SDT_PROBE_ARGTYPE(proc, kernel, , exec_failure, 0, "int"); +SDT_PROBE_DEFINE(proc, kernel, , exec_success); +SDT_PROBE_ARGTYPE(proc, kernel, , exec_success, 0, "char *"); + MALLOC_DEFINE(M_PARGS, "proc-args", "Process arguments"); static int sysctl_kern_ps_strings(SYSCTL_HANDLER_ARGS); @@ -348,6 +363,8 @@ do_execve(td, args, mac_p) imgp->image_header = NULL; + SDT_PROBE(proc, kernel, , exec, args->fname, 0, 0, 0, 0 ); + /* * Translate the file name. namei() returns a vnode pointer * in ni_vp amoung other things. @@ -658,6 +675,15 @@ interpret: textvp = p->p_textvp; p->p_textvp = ndp->ni_vp; +#ifdef KDTRACE_HOOKS + /* + * Tell the DTrace fasttrap provider about the exec if it + * has declared an interest. + */ + if (dtrace_fasttrap_exec) + dtrace_fasttrap_exec(p); +#endif + /* * Notify others that we exec'd, and clear the P_INEXEC flag * as we're now a bona fide freshly-execed process. @@ -729,6 +755,9 @@ done1: else crfree(newcred); VOP_UNLOCK(imgp->vp, 0, td); + + SDT_PROBE(proc, kernel, , exec_success, args->fname, 0, 0, 0, 0); + /* * Handle deferred decrement of ref counts. */ @@ -791,6 +820,8 @@ exec_fail: p->p_flag &= ~P_INEXEC; PROC_UNLOCK(p); + SDT_PROBE(proc, kernel, , exec_failure, error, 0, 0, 0, 0); + done2: #ifdef MAC mac_execve_exit(imgp); |