From 455f4ce1a3ca693e26b4a6cf20defca9459bf69f Mon Sep 17 00:00:00 2001 From: kan Date: Fri, 18 Jun 2010 16:14:37 +0000 Subject: [PATCH] MFC r207578: Do not encode more than CTF_MAX_VLEN(1023) enum members. CTF can not represent enums with more than CTF_MAX_VLEN members, but ctfconvert will happily ignore that limitation and create CTF section no other tool can interpret. This change is different from similar change from upstream, which just returns an error if big enum is encountered. Doing that means that every FreeBSD kernel with compiled in hwpmc will have no useable CTF information due to pmc_event enum having 1236+ members. git-svn-id: svn://svn.freebsd.org/base/stable/8@209306 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c b/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c index 6a9d67aa3..d95dd1db1 100644 --- a/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c +++ b/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c @@ -355,14 +355,21 @@ write_type(void *arg1, void *arg2) for (i = 0, ep = tp->t_emem; ep != NULL; ep = ep->el_next) i++; /* count up enum members */ + if (i > CTF_MAX_VLEN) { + warning("enum %s has too many values: %d > %d\n", + tdesc_name(tp), i, CTF_MAX_VLEN); + i = CTF_MAX_VLEN; + } + ctt.ctt_info = CTF_TYPE_INFO(CTF_K_ENUM, isroot, i); write_sized_type_rec(b, &ctt, tp->t_size); - for (ep = tp->t_emem; ep != NULL; ep = ep->el_next) { + for (ep = tp->t_emem; ep != NULL && i > 0; ep = ep->el_next) { offset = strtab_insert(&b->ctb_strtab, ep->el_name); cte.cte_name = CTF_TYPE_NAME(CTF_STRTAB_0, offset); cte.cte_value = ep->el_number; ctf_buf_write(b, &cte, sizeof (cte)); + i--; } break; -- 2.45.0