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shared/bus-unit-util: define helper for IODeviceLatencyTargetSec=

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2025-07-03 10:37:33 +02:00
parent 335f7c7f01
commit 235c580d80
1 changed files with 31 additions and 30 deletions
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src/shared/bus-unit-util.c
+31 -30
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@@ -458,6 +458,35 @@ static int bus_append_parse_io_device_weight(sd_bus_message *m, const char *fiel
return 1;
}
static int bus_append_parse_io_device_latency(sd_bus_message *m, const char *field, const char *eq) {
const char *field_usec = "IODeviceLatencyTargetUSec";
int r;
if (isempty(eq))
r = sd_bus_message_append(m, "(sv)", field_usec, "a(st)", 0);
else {
const char *e = strchr(eq, ' ');
if (!e)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Failed to parse %s value %s.",
field, eq);
const char *path = strndupa_safe(eq, e - eq);
const char *target = e + 1;
usec_t usec;
r = parse_sec(target, &usec);
if (r < 0)
return log_error_errno(r, "Failed to parse %s value %s: %m", field, target);
r = sd_bus_message_append(m, "(sv)", field_usec, "a(st)", 1, path, usec);
}
if (r < 0)
return bus_log_create_error(r);
return 1;
}
static int bus_append_exec_command(sd_bus_message *m, const char *field, const char *eq) {
bool explicit_path = false, done = false, ambient_hack = false;
_cleanup_strv_free_ char **l = NULL, **ex_opts = NULL;
@@ -829,36 +858,8 @@ static int bus_append_cgroup_property(sd_bus_message *m, const char *field, cons
if (streq(field, "IODeviceWeight"))
return bus_append_parse_io_device_weight(m, field, eq);
if (streq(field, "IODeviceLatencyTargetSec")) {
const char *field_usec = "IODeviceLatencyTargetUSec";
if (isempty(eq))
r = sd_bus_message_append(m, "(sv)", field_usec, "a(st)", 0);
else {
const char *path, *target, *e;
usec_t usec;
e = strchr(eq, ' ');
if (!e)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Failed to parse %s value %s.",
field, eq);
path = strndupa_safe(eq, e - eq);
target = e+1;
r = parse_sec(target, &usec);
if (r < 0)
return log_error_errno(r, "Failed to parse %s value %s: %m", field, target);
r = sd_bus_message_append(m, "(sv)", field_usec, "a(st)", 1, path, usec);
}
if (r < 0)
return bus_log_create_error(r);
return 1;
}
if (streq(field, "IODeviceLatencyTargetSec"))
return bus_append_parse_io_device_latency(m, field, eq);
if (STR_IN_SET(field, "IPAddressAllow",
"IPAddressDeny")) {