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sockstat: don't query jail vnet if system is running without VIMAGE.

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Fixes:  f1cd4902bf
This commit is contained in:
Gleb Smirnoff 2021-10-19 09:47:54 -07:00
parent 32723a3ba9
commit 1fec1fa814
1 changed files with 4 additions and 0 deletions
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4
usr.bin/sockstat/sockstat.c
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@ -1292,6 +1292,10 @@ jail_getvnet(int jid)
{
struct iovec jiov[6];
int vnet;
size_t len = sizeof(vnet);
if (sysctlbyname("kern.features.vimage", &vnet, &len, NULL, 0) != 0)
return (0);
vnet = -1;
jiov[0].iov_base = __DECONST(char *, "jid");