diff options
Diffstat (limited to 'sys/cddl/dev/dtrace/dtrace_ioctl.c')
| -rw-r--r-- | sys/cddl/dev/dtrace/dtrace_ioctl.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/cddl/dev/dtrace/dtrace_ioctl.c b/sys/cddl/dev/dtrace/dtrace_ioctl.c index bc408c4..79fea7b 100644 --- a/sys/cddl/dev/dtrace/dtrace_ioctl.c +++ b/sys/cddl/dev/dtrace/dtrace_ioctl.c @@ -27,6 +27,55 @@ SYSCTL_INT(_debug_dtrace, OID_AUTO, verbose_ioctl, CTLFLAG_RW, &dtrace_verbose_i #define DTRACE_IOCTL_PRINTF(fmt, ...) if (dtrace_verbose_ioctl) printf(fmt, ## __VA_ARGS__ ) +static int +dtrace_ioctl_helper(struct cdev *dev, u_long cmd, caddr_t addr, int flags, + struct thread *td) +{ + int rval; + dof_helper_t *dhp = NULL; + dof_hdr_t *dof = NULL; + + switch (cmd) { + case DTRACEHIOC_ADDDOF: + dhp = (dof_helper_t *)addr; + /* XXX all because dofhp_dof is 64 bit */ +#ifdef __i386 + addr = (caddr_t)(uint32_t)dhp->dofhp_dof; +#else + addr = (caddr_t)dhp->dofhp_dof; +#endif + /* FALLTHROUGH */ + case DTRACEHIOC_ADD: + dof = dtrace_dof_copyin((intptr_t)addr, &rval); + + if (dof == NULL) + return (rval); + + mutex_enter(&dtrace_lock); + if ((rval = dtrace_helper_slurp((dof_hdr_t *)dof, dhp)) != -1) { + if (dhp) { + dhp->gen = rval; + copyout(dhp, addr, sizeof(*dhp)); + } + rval = 0; + } else { + rval = EINVAL; + } + mutex_exit(&dtrace_lock); + return (rval); + case DTRACEHIOC_REMOVE: + mutex_enter(&dtrace_lock); + rval = dtrace_helper_destroygen((int)*addr); + mutex_exit(&dtrace_lock); + + return (rval); + default: + break; + } + + return (ENOTTY); +} + /* ARGSUSED */ static int dtrace_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, |
