+
+/* like strncpy but does not 0 fill the buffer and always null
+ terminates (thus it can use maxlen+1 space in d) */
+void strlcpy(char *d, char *s, int maxlen)
+{
+ int len = strlen(s);
+ if (len > maxlen) len = maxlen;
+ memcpy(d, s, len);
+ d[len] = 0;
+}
+
+/* turn a user name into a uid */
+int name_to_uid(char *name, uid_t *uid)
+{
+ struct passwd *pass;
+ if (!name || !*name) return 0;
+ pass = getpwnam(name);
+ if (pass) {
+ *uid = pass->pw_uid;
+ return 1;
+ }
+ return 0;
+}
+
+/* turn a group name into a gid */
+int name_to_gid(char *name, gid_t *gid)
+{
+ struct group *grp;
+ if (!name || !*name) return 0;
+ grp = getgrnam(name);
+ if (grp) {
+ *gid = grp->gr_gid;
+ return 1;
+ }
+ return 0;
+}
+