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author | John Birrell <jb@FreeBSD.org> | 2008-05-24 06:22:16 +0000 |
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committer | John Birrell <jb@FreeBSD.org> | 2008-05-24 06:22:16 +0000 |
commit | 5d217f173ca18f049d5341146b171c1f18c5fc07 (patch) | |
tree | 5d1a1433c24202dd7d4681d388f6df0788664c25 /sys/kern/kern_exec.c | |
parent | f72ab79315e95e06d34784aef96cc36372b15cc1 (diff) | |
download | src-5d217f173ca18f049d5341146b171c1f18c5fc07.tar.gz src-5d217f173ca18f049d5341146b171c1f18c5fc07.zip |
Add DTrace 'proc' provider probes using the Statically Defined Trace
(sdt) mechanism.
Notes
Notes:
svn path=/head/; revision=179276
Diffstat (limited to 'sys/kern/kern_exec.c')
-rw-r--r-- | sys/kern/kern_exec.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index 838c4fdcd85a..f4335a282fc7 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" #include "opt_vm.h" @@ -54,6 +55,7 @@ __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> @@ -83,6 +85,19 @@ __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); @@ -371,6 +386,8 @@ 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. @@ -702,6 +719,15 @@ interpret: textvp = p->p_textvp; p->p_textvp = binvp; +#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. @@ -764,6 +790,7 @@ interpret: vfs_mark_atime(imgp->vp, td); done1: + /* * Free any resources malloc'd earlier that we didn't use. */ @@ -773,6 +800,9 @@ done1: else crfree(newcred); VOP_UNLOCK(imgp->vp, 0); + + SDT_PROBE(proc, kernel, , exec_success, args->fname, 0, 0, 0, 0); + /* * Handle deferred decrement of ref counts. */ @@ -836,6 +866,8 @@ 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); |