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-rw-r--r--src/basic/util.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/src/basic/util.c b/src/basic/util.c
index 40a4b8fbec..bc61ec0115 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -2578,6 +2578,62 @@ cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
}
}
+int parse_cpu_set(
+ const char *rvalue,
+ cpu_set_t **cpu_set,
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *lvalue) {
+
+ const char *whole_rvalue = rvalue;
+ _cleanup_cpu_free_ cpu_set_t *c = NULL;
+ unsigned ncpus = 0;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+ unsigned cpu;
+ int r;
+
+ r = extract_first_word(&rvalue, &word, WHITESPACE, EXTRACT_QUOTES);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Invalid value for %s: %s", lvalue, whole_rvalue);
+ return r;
+ }
+ if (r == 0)
+ break;
+
+ r = safe_atou(word, &cpu);
+
+ if (!c)
+ if (!(c = cpu_set_malloc(&ncpus)))
+ return log_oom();
+
+ if (r < 0 || cpu >= ncpus) {
+ log_syntax(unit, LOG_ERR, filename, line, -r,
+ "Failed to parse CPU affinity '%s'", rvalue);
+ return -EBADMSG;
+ }
+
+ CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
+ }
+ if (!isempty(rvalue))
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Trailing garbage, ignoring.");
+
+ /* On success, sets *cpu_set and returns ncpus for the system. */
+ if (c) {
+ *cpu_set = c;
+ c = NULL;
+ }
+ return (int) ncpus;
+}
+
int files_same(const char *filea, const char *fileb) {
struct stat a, b;