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tload: Report on lack of /proc/loadavg

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Now that the library correctly returns an error if loadavg
is not available, tload can tell the user the bad news.

References:
 procps-ng/procps#227
 commit 8fcd14de18

Signed-off-by: Craig Small <csmall@dropbear.xyz>
This commit is contained in:
Craig Small 2022-05-31 21:35:40 +10:00
parent 8fcd14de18
commit 3111334ddd
1 changed files with 10 additions and 1 deletions
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11
tload.c
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@ -170,11 +170,20 @@ int main(int argc, char **argv)
alrm(0); alrm(0);
while (1) { while (1) {
int rc;
if (scale_fact < max_scale) if (scale_fact < max_scale)
scale_fact *= 2.0; /* help it drift back up. */ scale_fact *= 2.0; /* help it drift back up. */
procps_loadavg(&av[0], &av[1], &av[2]); if ((rc = procps_loadavg(&av[0], &av[1], &av[2])) < 0)
{
if (rc == -ENOENT)
xerrx(EXIT_FAILURE,
_("Load average file /proc/loadavg does not exist"));
else
xerrx(EXIT_FAILURE,
_("Unable to get load average"));
}
do { do {
lines = av[0] * scale_fact; lines = av[0] * scale_fact;