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supervise-daemon: implement SSD_IONICELEVEL

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supervise-daemon was apparently overlooked when support for the
SSD_IONICELEVEL environment variable was added. This commit brings
supervise-daemon up to parity with start-stop-daemon with respect to
this environment variable.
This commit is contained in:
Matt Whitlock 2021-07-31 17:13:21 -04:00 committed by William Hubbs
parent 002e25a74a
commit 291cddb72b
2 changed files with 17 additions and 1 deletions
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4
man/supervise-daemon.8
View File

@ -156,6 +156,10 @@ The same thing as
but with the standard error output.
.El
.Sh ENVIRONMENT
.Va SSD_IONICELEVEL
can also set the IO scheduling priority of the daemon, but the command line
option takes precedence.
.Pp
.Va SSD_NICELEVEL
can also set the scheduling priority of the daemon, but the command line
option takes precedence.

14
src/rc/supervise-daemon.c
View File

@ -423,7 +423,8 @@ static void child_process(char *exec, char **argv)
if ((strncmp(env->value, "RC_", 3) == 0 &&
strncmp(env->value, "RC_SERVICE=", 11) != 0 &&
strncmp(env->value, "RC_SVCNAME=", 11) != 0) ||
strncmp(env->value, "SSD_NICELEVEL=", 14) == 0)
strncmp(env->value, "SSD_NICELEVEL=", 14) == 0 ||
strncmp(env->value, "SSD_IONICELEVEL=", 16) == 0)
{
p = strchr(env->value, '=');
*p = '\0';
@ -733,6 +734,17 @@ int main(int argc, char **argv)
if (sscanf(tmp, "%d", &nicelevel) != 1)
eerror("%s: invalid nice level `%s' (SSD_NICELEVEL)",
applet, tmp);
if ((tmp = getenv("SSD_IONICELEVEL"))) {
int n = sscanf(tmp, "%d:%d", &ionicec, &ioniced);
if (n != 1 && n != 2)
eerror("%s: invalid ionice level `%s' (SSD_IONICELEVEL)",
applet, tmp);
if (ionicec == 0)
ioniced = 0;
else if (ionicec == 3)
ioniced = 7;
ionicec <<= 13; /* class shift */
}
/* Get our user name and initial dir */
p = getenv("USER");