dns response handling: don't treat too many addresses as an error

[musl] / src / passwd / getpwent_a.c

diff --git a/src/passwd/getpwent_a.c b/src/passwd/getpwent_a.c
index 34842a0..d1b4b53 100644 (file)
--- a/src/passwd/getpwent_a.c
+++ b/src/passwd/getpwent_a.c
@@ -8,14 +8,16 @@ static unsigned atou(char **s)
        return x;
 }
 
-struct passwd *__getpwent_a(FILE *f, struct passwd *pw, char **line, size_t *size)
+int __getpwent_a(FILE *f, struct passwd *pw, char **line, size_t *size, struct passwd **res)
 {
        ssize_t l;
        char *s;
+       int rv = 0;
        int cs;
        pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
        for (;;) {
                if ((l=getline(line, size, f)) < 0) {
+                       rv = ferror(f) ? errno : 0;
                        free(*line);
                        *line = 0;
                        pw = 0;
@@ -46,5 +48,7 @@ struct passwd *__getpwent_a(FILE *f, struct passwd *pw, char **line, size_t *siz
                break;
        }
        pthread_setcancelstate(cs, 0);
-       return pw;
+       *res = pw;
+       if (rv) errno = rv;
+       return rv;
 }