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gctl_get_class, gctl_get_geom and gctl_get_provider: provide feedback

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when the requested argument is missing.

Reviewed by:		cem
MFC after:		2 weeks
Differential revision:	https://reviews.freebsd.org/D25738
This commit is contained in:
Xin LI 2020-07-22 02:14:27 +00:00
parent 9d6d8bf8c7
commit 0ab851aac3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363410
1 changed files with 11 additions and 6 deletions
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17
sys/geom/geom_ctl.c
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@ -396,12 +396,15 @@ gctl_get_class(struct gctl_req *req, char const *arg)
struct g_class *cp;
p = gctl_get_asciiparam(req, arg);
if (p == NULL)
if (p == NULL) {
gctl_error(req, "Missing %s argument", arg);
return (NULL);
}
LIST_FOREACH(cp, &g_classes, class) {
if (!strcmp(p, cp->name))
return (cp);
}
gctl_error(req, "Class not found: \"%s\"", p);
return (NULL);
}
@ -413,8 +416,10 @@ gctl_get_geom(struct gctl_req *req, struct g_class *mpr, char const *arg)
struct g_geom *gp;
p = gctl_get_asciiparam(req, arg);
if (p == NULL)
if (p == NULL) {
gctl_error(req, "Missing %s argument", arg);
return (NULL);
}
LIST_FOREACH(mp, &g_classes, class) {
if (mpr != NULL && mpr != mp)
continue;
@ -434,8 +439,10 @@ gctl_get_provider(struct gctl_req *req, char const *arg)
struct g_provider *pp;
p = gctl_get_asciiparam(req, arg);
if (p == NULL)
if (p == NULL) {
gctl_error(req, "Missing '%s' argument", arg);
return (NULL);
}
pp = g_provider_by_name(p);
if (pp != NULL)
return (pp);
@ -453,10 +460,8 @@ g_ctl_req(void *arg, int flag __unused)
g_topology_assert();
req = arg;
mp = gctl_get_class(req, "class");
if (mp == NULL) {
gctl_error(req, "Class not found");
if (mp == NULL)
return;
}
if (mp->ctlreq == NULL) {
gctl_error(req, "Class takes no requests");
return;