librb/helper: pass our fd limit to the child

Instead of arbitrarily limiting it to 256.  This avoids an issue with
busy authds "running out" of fds because librb says no more.

diff --git a/librb/src/helper.c b/librb/src/helper.c
index 593b0dc15679345a04da56081de9e2dba7ba7a6b..fb3886b37ca2e0e814c9227d25b78875de6cc412 100644 (file)
--- a/librb/src/helper.c
+++ b/librb/src/helper.c
@@ -105,7 +105,7 @@ rb_helper_start(const char *name, const char *fullpath, rb_helper_cb * read_cb,
        rb_helper *helper;
        const char *parv[2];
        char buf[128];
-       char fx[16], fy[16];
+       char fx[16], fy[16], maxfd[16];
        rb_fde_t *in_f[2];
        rb_fde_t *out_f[2];
        pid_t pid;
@@ -130,6 +130,7 @@ rb_helper_start(const char *name, const char *fullpath, rb_helper_cb * read_cb,
 
        snprintf(fx, sizeof(fx), "%d", rb_get_fd(in_f[1]));
        snprintf(fy, sizeof(fy), "%d", rb_get_fd(out_f[0]));
+       snprintf(maxfd, sizeof(maxfd), "%d", rb_getmaxconnect());
 
        rb_set_nb(in_f[0]);
        rb_set_nb(in_f[1]);
@@ -138,7 +139,7 @@ rb_helper_start(const char *name, const char *fullpath, rb_helper_cb * read_cb,
 
        rb_setenv("IFD", fy, 1);
        rb_setenv("OFD", fx, 1);
-       rb_setenv("MAXFD", "256", 1);
+       rb_setenv("MAXFD", maxfd, 1);
 
        snprintf(buf, sizeof(buf), "-ircd %s daemon", name);
        parv[0] = buf;