diff options
| -rw-r--r-- | sys/geom/geom_ctl.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/sys/geom/geom_ctl.c b/sys/geom/geom_ctl.c index c387b9e5102c..ce308d236dc1 100644 --- a/sys/geom/geom_ctl.c +++ b/sys/geom/geom_ctl.c @@ -63,16 +63,15 @@ static struct cdevsw g_ctl_cdevsw = { .d_name = "g_ctl", }; +CTASSERT(GCTL_PARAM_RD == VM_PROT_READ); +CTASSERT(GCTL_PARAM_WR == VM_PROT_WRITE); + void g_ctl_init(void) { make_dev_credf(MAKEDEV_ETERNAL, &g_ctl_cdevsw, 0, NULL, UID_ROOT, GID_OPERATOR, 0640, PATH_GEOM_CTL); - KASSERT(GCTL_PARAM_RD == VM_PROT_READ, - ("GCTL_PARAM_RD != VM_PROT_READ")); - KASSERT(GCTL_PARAM_WR == VM_PROT_WRITE, - ("GCTL_PARAM_WR != VM_PROT_WRITE")); } /* @@ -222,14 +221,18 @@ gctl_copyin(struct gctl_req *req) gctl_error(req, "negative param length"); break; } - p = geom_alloc_copyin(req, ap[i].value, ap[i].len); - if (p == NULL) - break; - if ((ap[i].flag & GCTL_PARAM_ASCII) && - p[ap[i].len - 1] != '\0') { - gctl_error(req, "unterminated param value"); - g_free(p); - break; + if (ap[i].flag & GCTL_PARAM_RD) { + p = geom_alloc_copyin(req, ap[i].value, ap[i].len); + if (p == NULL) + break; + if ((ap[i].flag & GCTL_PARAM_ASCII) && + p[ap[i].len - 1] != '\0') { + gctl_error(req, "unterminated param value"); + g_free(p); + break; + } + } else { + p = g_malloc(ap[i].len, M_WAITOK | M_ZERO); } ap[i].kvalue = p; ap[i].flag |= GCTL_PARAM_VALUEKERNEL; |