MFC r311305 (by asomers):
Always null-terminate ccb_pathinq.(sim_vid|hba_vid|dev_name)

The sim_vid, hba_vid, and dev_name fields of struct ccb_pathinq are
fixed-length strings. AFAICT the only place they're read is in
sbin/camcontrol/camcontrol.c, which assumes they'll be null-terminated.
However, the kernel doesn't null-terminate them. A bunch of copy-pasted code
uses strncpy to write them, and doesn't guarantee null-termination. For at
least 4 drivers (mpr, mps, ciss, and hyperv), the hba_vid field actually
overflows. You can see the result by doing "camcontrol negotiate da0 -v".

This change null-terminates those fields everywhere they're set in the
kernel. It also shortens a few strings to ensure they'll fit within the
16-character field.

PR: 215474
Reported by: Coverity
CID: 1009997 1010000 1010001 1010002 1010003 1010004 1010005
CID: 1331519 1010006 1215097 1010007 1288967 1010008 1306000
CID: 1211924 1010009 1010010 1010011 1010012 1010013 1010014
CID: 1147190 1010017 1010016 1010018 1216435 1010020 1010021
CID: 1010022 1009666 1018185 1010023 1010025 1010026 1010027
CID: 1010028 1010029 1010030 1010031 1010033 1018186 1018187
CID: 1010035 1010036 1010042 1010041 1010040 1010039

MFC r299694:
Fix a bug in r298340: "sim" was referenced after being unset.

MFC r298340:
r298340 (by cem):

sym(4): Don't double-free 'sim' in failure case

CID: 1006106

MFC r274819:
Prevent overflow issues in timeout processing

MFC r274852:
Fix build with asr driver

Sponsored by: Multiplay

MFC r259880:

In sys/dev/sym/sym_hipd.c, remove static functions sym_que_first(),
sym_que_last() and sym_remque_tail(), which are all unused since r53790.

MFC r274819:
Prevent overflow issues in timeout processing

MFC r274852:
Fix build with asr driver

Sponsored by: Multiplay

MFC r259880:

In sys/dev/sym/sym_hipd.c, remove static functions sym_que_first(),
sym_que_last() and sym_remque_tail(), which are all unused since r53790.