diff options
Diffstat (limited to 'sys/kern/kern_ktrace.c')
| -rw-r--r-- | sys/kern/kern_ktrace.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c index 46b1ca6..595e4ef 100644 --- a/sys/kern/kern_ktrace.c +++ b/sys/kern/kern_ktrace.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)kern_ktrace.c 8.2 (Berkeley) 9/23/93 - * $Id: kern_ktrace.c,v 1.11 1996/03/11 06:03:23 hsu Exp $ + * $Id: kern_ktrace.c,v 1.12 1996/08/04 20:13:07 phk Exp $ */ #include "opt_ktrace.h" @@ -346,6 +346,45 @@ done: #endif } +/* + * utrace system call + */ +/* ARGSUSED */ +int +utrace(curp, uap, retval) + struct proc *curp; + register struct utrace_args *uap; + int *retval; +{ +#ifdef KTRACE + register struct ktr_user *ktp; + struct ktr_header *kth; + struct proc *p = curproc; /* XXX */ + register caddr_t cp; + + if (!KTRPOINT(p, KTR_USER)) + return (0); + p->p_traceflag |= KTRFAC_ACTIVE; + kth = ktrgetheader(KTR_USER); + MALLOC(ktp, struct ktr_user *, sizeof(struct ktr_user) + uap->len, + M_KTRACE, M_WAITOK); + ktp->len = uap->len; + cp = (caddr_t)((char *)ktp + sizeof (struct ktr_user)); + if (!copyin(uap->addr, cp, uap->len)) { + kth->ktr_buf = (caddr_t)ktp; + kth->ktr_len = sizeof (struct ktr_user) + uap->len; + ktrwrite(p->p_tracep, kth); + } + FREE(kth, M_KTRACE); + FREE(ktp, M_KTRACE); + p->p_traceflag &= ~KTRFAC_ACTIVE; + + return (0); +#else + return (ENOSYS); +#endif +} + #ifdef KTRACE static int ktrops(curp, p, ops, facs, vp) |
