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sbin/geom/class/part/geom_part.c

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Always validate the return of find_geomcfg().  It could be NULL, for
	example when the geom is withering.

Approved by:	ken (mentor)
Sponsored by:	Spectra Logic Corporation
MFC after:	3 weeks
This commit is contained in:
Alan Somers 2013-10-23 18:58:11 +00:00
parent fce0413b0a
commit 86b2e94a3d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=257006
1 changed files with 31 additions and 3 deletions
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34
sbin/geom/class/part/geom_part.c
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@ -364,7 +364,11 @@ gpart_autofill_resize(struct gctl_req *req)
}
offset = (pp->lg_stripeoffset / pp->lg_sectorsize) % alignment;
last = (off_t)strtoimax(find_geomcfg(gp, "last"), NULL, 0);
s = find_geomcfg(gp, "last");
if (s == NULL)
errx(EXIT_FAILURE, "Final block not found for geom %s",
gp->lg_name);
last = (off_t)strtoimax(s, NULL, 0);
LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
s = find_provcfg(pp, "index");
if (s == NULL)
@ -502,8 +506,16 @@ gpart_autofill(struct gctl_req *req)
if (size > alignment)
size = ALIGNDOWN(size, alignment);
first = (off_t)strtoimax(find_geomcfg(gp, "first"), NULL, 0);
last = (off_t)strtoimax(find_geomcfg(gp, "last"), NULL, 0);
s = find_geomcfg(gp, "first");
if (s == NULL)
errx(EXIT_FAILURE, "Starting block not found for geom %s",
gp->lg_name);
first = (off_t)strtoimax(s, NULL, 0);
s = find_geomcfg(gp, "last");
if (s == NULL)
errx(EXIT_FAILURE, "Final block not found for geom %s",
gp->lg_name);
last = (off_t)strtoimax(s, NULL, 0);
grade = ~0ULL;
a_first = ALIGNUP(first + offset, alignment);
last = ALIGNDOWN(last + offset, alignment);
@ -587,12 +599,22 @@ gpart_show_geom(struct ggeom *gp, const char *element, int show_providers)
int idx, wblocks, wname, wmax;
scheme = find_geomcfg(gp, "scheme");
if (scheme == NULL)
errx(EXIT_FAILURE, "Scheme not found for geom %s", gp->lg_name);
s = find_geomcfg(gp, "first");
if (s == NULL)
errx(EXIT_FAILURE, "Starting block not found for geom %s",
gp->lg_name);
first = (off_t)strtoimax(s, NULL, 0);
s = find_geomcfg(gp, "last");
if (s == NULL)
errx(EXIT_FAILURE, "Final block not found for geom %s",
gp->lg_name);
last = (off_t)strtoimax(s, NULL, 0);
wblocks = strlen(s);
s = find_geomcfg(gp, "state");
if (s == NULL)
errx(EXIT_FAILURE, "State not found for geom %s", gp->lg_name);
if (s != NULL && *s != 'C')
s = NULL;
wmax = strlen(gp->lg_name);
@ -748,6 +770,8 @@ gpart_backup(struct gctl_req *req, unsigned int fl __unused)
abort();
pp = LIST_FIRST(&gp->lg_consumer)->lg_provider;
s = find_geomcfg(gp, "last");
if (s == NULL)
abort();
wblocks = strlen(s);
wtype = 0;
LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
@ -757,6 +781,8 @@ gpart_backup(struct gctl_req *req, unsigned int fl __unused)
wtype = i;
}
s = find_geomcfg(gp, "entries");
if (s == NULL)
abort();
windex = strlen(s);
printf("%s %s\n", scheme, s);
LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
@ -1177,6 +1203,8 @@ gpart_bootcode(struct gctl_req *req, unsigned int fl)
if (gp == NULL)
errx(EXIT_FAILURE, "No such geom: %s.", s);
s = find_geomcfg(gp, "scheme");
if (s == NULL)
errx(EXIT_FAILURE, "Scheme not found for geom %s", gp->lg_name);
vtoc8 = 0;
if (strcmp(s, "VTOC8") == 0)
vtoc8 = 1;