If ld.so loading fails inside execve, uprintf a message to report this

before the SIGABRT kills the process.  This clarifies the failure mode
(and resolution to take) when a dynamic executable is run while /usr
isn't mounted.  ok miod kettenis

diff --git a/sys/kern/exec_elf.c b/sys/kern/exec_elf.c
index 10a0345..a27dac2 100644 (file)
--- a/sys/kern/exec_elf.c
+++ b/sys/kern/exec_elf.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: exec_elf.c,v 1.167 2022/08/14 01:58:27 jsg Exp $      */
+/*     $OpenBSD: exec_elf.c,v 1.168 2022/08/29 16:53:46 deraadt Exp $  */
 
 /*
  * Copyright (c) 1996 Per Fogelstrom
@@ -738,6 +738,7 @@ exec_elf_fixup(struct proc *p, struct exec_package *epp)
 
        if (interp &&
            (error = elf_load_file(p, interp, epp, ap)) != 0) {
+               uprintf("execve: cannot load %s\n", interp);
                free(ap, M_TEMP, sizeof *ap);
                pool_put(&namei_pool, interp);
                kill_vmcmds(&epp->ep_vmcmds);