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Now that the PID is constantly refreshed, introduce a pidname function which

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when given a PID consults the kern.proc.pid sysctl variable to pull out the
pcomm data.
This commit is contained in:
csjp 2005-09-05 23:13:05 +00:00
parent 17dd22a407
commit b1c29887f7
1 changed files with 21 additions and 5 deletions
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26
tools/tools/bpfstat/bpfstat.c
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@ -58,6 +58,24 @@ static void usage(char *);
static void setwidths(struct colwidths *);
static int diglen(double);
static char *
pidname(pid_t pid)
{
struct kinfo_proc newkp;
int error, mib[4];
size_t size;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
mib[3] = pid;
size = sizeof(newkp);
error = sysctl(mib, 4, &newkp, &size, NULL, 0);
if (error < 0)
return (strdup("??????"));
return (strdup(newkp.ki_comm));
}
static void
setwidths(struct colwidths *c)
{
@ -129,8 +147,9 @@ static void
bpfd_print_row(struct xbpf_d *bd, struct conf *conf)
{
struct colwidths *c;
char flagbuf[8];
char *pname, flagbuf[8];
pname = pidname(bd->bd_pid);
c = &conf->cw;
bpfd_parse_flags(bd, &flagbuf[0]);
printf("%*d %*s %*s %*lu %*lu %*lu %*d %*d %s\n",
@ -142,7 +161,7 @@ bpfd_print_row(struct xbpf_d *bd, struct conf *conf)
c->fc_width, bd->bd_fcount,
c->sb_width, bd->bd_slen,
c->hb_width, bd->bd_hlen,
bd->bd_pcomm);
pname);
}
static void
@ -227,9 +246,6 @@ main(int argc, char *argv [])
if (cf.Iflag &&
strcmp(bd->bd_ifname, cf.Iflag) != 0)
continue;
if (cf.cflag &&
strcmp(bd->bd_pcomm, cf.cflag) != 0)
continue;
bpfd_print_row(bd, &cf);
}
cf.lps++;