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Make mdconfig(8) not segfault when the kernel returns garbage data.

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MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
This commit is contained in:
Edward Tomasz Napierala 2017-02-19 16:08:58 +00:00
parent 316e092a77
commit 30545786bb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=313943
1 changed files with 2 additions and 2 deletions
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sbin/mdconfig/mdconfig.c
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@ -452,8 +452,8 @@ md_list(const char *units, int opt, const char *fflag)
}
gc = &pp->lg_config;
type = geom_config_get(gc, "type");
if (strcmp(type, "vnode") == 0 ||
strcmp(type, "preload") == 0) {
if (type != NULL && (strcmp(type, "vnode") == 0 ||
strcmp(type, "preload") == 0)) {
file = geom_config_get(gc, "file");
if (fflag != NULL &&
strcmp(fflag, file) != 0)