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wlandebug(8): add a sanity check.

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This commit is contained in:
Andriy Voskoboinyk 2017-10-16 07:15:50 +00:00
parent 238c9eb65a
commit 3ce85fa36b
1 changed files with 3 additions and 0 deletions
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usr.sbin/wlandebug/wlandebug.c
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@ -172,6 +172,9 @@ get_orig_iface_name(char *oid, size_t oid_size, char *name)
if (ifconfig_get_orig_name(h, name, &orig_name) < 0)
errc(1, ifconfig_err_errno(h), "cannot get interface name");
if (strlen(orig_name) < strlen("wlan") + 1)
errx(1, "expecting a wlan interface name");
ifconfig_close(h);
setoid(oid, oid_size, orig_name);
free(orig_name);