int config_parse_cpu_affinity( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_cpu_free_ cpu_set_t *cpuset = NULL; Settings *settings = data; int ncpus; assert(rvalue); assert(settings); ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue); if (ncpus < 0) return ncpus; if (ncpus == 0) { /* An empty assignment resets the CPU list */ settings->cpuset = cpu_set_mfree(settings->cpuset); settings->cpuset_ncpus = 0; return 0; } if (!settings->cpuset) { settings->cpuset = TAKE_PTR(cpuset); settings->cpuset_ncpus = (unsigned) ncpus; return 0; } if (settings->cpuset_ncpus < (unsigned) ncpus) { CPU_OR_S(CPU_ALLOC_SIZE(settings->cpuset_ncpus), cpuset, settings->cpuset, cpuset); CPU_FREE(settings->cpuset); settings->cpuset = TAKE_PTR(cpuset); settings->cpuset_ncpus = (unsigned) ncpus; return 0; } CPU_OR_S(CPU_ALLOC_SIZE((unsigned) ncpus), settings->cpuset, settings->cpuset, cpuset); return 0; }
static void test_parse_cpu_set(void) { cpu_set_t *c = NULL; int ncpus; int cpu; /* Simple range (from CPUAffinity example) */ ncpus = parse_cpu_set_and_warn("1 2", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_ISSET_S(1, CPU_ALLOC_SIZE(ncpus), c)); assert_se(CPU_ISSET_S(2, CPU_ALLOC_SIZE(ncpus), c)); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 2); c = cpu_set_mfree(c); /* A more interesting range */ ncpus = parse_cpu_set_and_warn("0 1 2 3 8 9 10 11", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 8); for (cpu = 0; cpu < 4; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); for (cpu = 8; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Quoted strings */ ncpus = parse_cpu_set_and_warn("8 '9' 10 \"11\"", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 4); for (cpu = 8; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Use commas as separators */ ncpus = parse_cpu_set_and_warn("0,1,2,3 8,9,10,11", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 8); for (cpu = 0; cpu < 4; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); for (cpu = 8; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Commas with spaces (and trailing comma, space) */ ncpus = parse_cpu_set_and_warn("0, 1, 2, 3, 4, 5, 6, 7, ", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 8); for (cpu = 0; cpu < 8; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Ranges */ ncpus = parse_cpu_set_and_warn("0-3,8-11", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 8); for (cpu = 0; cpu < 4; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); for (cpu = 8; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Ranges with trailing comma, space */ ncpus = parse_cpu_set_and_warn("0-3 8-11, ", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 8); for (cpu = 0; cpu < 4; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); for (cpu = 8; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Negative range (returns empty cpu_set) */ ncpus = parse_cpu_set_and_warn("3-0", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 0); c = cpu_set_mfree(c); /* Overlapping ranges */ ncpus = parse_cpu_set_and_warn("0-7 4-11", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 12); for (cpu = 0; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Mix ranges and individual CPUs */ ncpus = parse_cpu_set_and_warn("0,1 4-11", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus >= 1024); assert_se(CPU_COUNT_S(CPU_ALLOC_SIZE(ncpus), c) == 10); assert_se(CPU_ISSET_S(0, CPU_ALLOC_SIZE(ncpus), c)); assert_se(CPU_ISSET_S(1, CPU_ALLOC_SIZE(ncpus), c)); for (cpu = 4; cpu < 12; cpu++) assert_se(CPU_ISSET_S(cpu, CPU_ALLOC_SIZE(ncpus), c)); c = cpu_set_mfree(c); /* Garbage */ ncpus = parse_cpu_set_and_warn("0 1 2 3 garbage", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus < 0); assert_se(!c); /* Range with garbage */ ncpus = parse_cpu_set_and_warn("0-3 8-garbage", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus < 0); assert_se(!c); /* Empty string */ c = NULL; ncpus = parse_cpu_set_and_warn("", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus == 0); /* empty string returns 0 */ assert_se(!c); /* Runaway quoted string */ ncpus = parse_cpu_set_and_warn("0 1 2 3 \"4 5 6 7 ", &c, NULL, "fake", 1, "CPUAffinity"); assert_se(ncpus < 0); assert_se(!c); }