main: minor optimization

[elogind.git] / src / util.c

diff --git a/src/util.c b/src/util.c
index 23d7e2211d8a94c1642452627b24ff208ead8559..b02a77eed8ab65e144cbf557e12a5974e0ec880c 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -683,6 +683,73 @@ fail:
         return r;
 }
 
+int load_env_file(
+                const char *fname,
+                char ***rl) {
+
+        FILE *f;
+        char **m = 0;
+        int r;
+
+        assert(fname);
+        assert(rl);
+
+        if (!(f = fopen(fname, "re")))
+                return -errno;
+
+        while (!feof(f)) {
+                char l[LINE_MAX], *p, *u;
+                char **t;
+
+                if (!fgets(l, sizeof(l), f)) {
+                        if (feof(f))
+                                break;
+
+                        r = -errno;
+                        goto finish;
+                }
+
+                p = strstrip(l);
+
+                if (!*p)
+                        continue;
+
+                if (strchr(COMMENTS, *p))
+                        continue;
+
+                if (!(u = normalize_env_assignment(p))) {
+                        log_error("Out of memory");
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                t = strv_append(m, u);
+                free(u);
+
+                if (!t) {
+                        log_error("Out of memory");
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                strv_free(m);
+                m = t;
+        }
+
+        r = 0;
+
+        *rl = m;
+        m = NULL;
+
+finish:
+        if (f)
+                fclose(f);
+
+        strv_free(m);
+
+        return r;
+}
+
 char *truncate_nl(char *s) {
         assert(s);