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Provide an error message if KTR symbols in a vmcore cannot be resolved.

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libkvm does not set an error string in this case, so we were previously
failing silently.

MFC after:	1 week
This commit is contained in:
markj 2017-09-11 15:18:43 +00:00
parent 60af0c5a26
commit f5658ab735
1 changed files with 7 additions and 2 deletions
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9
usr.bin/ktrdump/ktrdump.c
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@ -98,6 +98,7 @@ main(int ac, char **av)
char *p;
int version;
int entries;
int count;
int index, index2;
int parm;
int in;
@ -184,8 +185,12 @@ main(int ac, char **av)
*/
caph_cache_catpages();
if (kvm_nlist(kd, nl) != 0 ||
kvm_read(kd, nl[0].n_value, &version, sizeof(version)) == -1)
count = kvm_nlist(kd, nl);
if (count == -1)
errx(1, "%s", kvm_geterr(kd));
if (count > 0)
errx(1, "failed to resolve ktr symbols");
if (kvm_read(kd, nl[0].n_value, &version, sizeof(version)) == -1)
errx(1, "%s", kvm_geterr(kd));
if (version != KTR_VERSION)
errx(1, "ktr version mismatch");