We want to allow builds in chroots that lack /bin/sh.  Thus, system(3)
and popen(3) need to be tweaked to use the right shell.  For the bootstrap
glibc, we just use whatever `sh' can be found in $PATH.  The final glibc
instead uses the hard-coded absolute file name of `bash'.

--- a/sysdeps/posix/system.c
+++ b/sysdeps/posix/system.c
@@ -140,7 +140,7 @@ do_system (const char *line)
   __posix_spawnattr_setflags (&spawn_attr,
 			      POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK);
 
-  status = __posix_spawn (&pid, SHELL_PATH, 0, &spawn_attr,
+  status = posix_spawnp (&pid, SHELL_NAME, 0, &spawn_attr,
 			  (char *const[]){ (char*) SHELL_NAME,
 					   (char*) "-c",
 					   (char *) line, NULL },
--- a/libio/iopopen.c
+++ b/libio/iopopen.c
@@ -85,7 +85,7 @@ spawn_process (posix_spawn_file_actions_t *fa, FILE *fp, const char *command,
 	return false;
     }
 
-  if (__posix_spawn (&((_IO_proc_file *) fp)->pid, _PATH_BSHELL, fa, 0,
+  if (posix_spawnp (&((_IO_proc_file *) fp)->pid, "sh", fa, 0,
 		     (char *const[]){ (char*) "sh", (char*) "-c",
 		     (char *) command, NULL }, __environ) != 0)
     return false;

a75e0c474769'>refs</a><a class='active' href='/guix/log/gnu/services/hurd.scm'>log</a><a href='/guix/tree/gnu/services/hurd.scm?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>tree</a><a href='/guix/commit/gnu/services/hurd.scm?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>commit</a><a href='/guix/diff/gnu/services/hurd.scm?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/hurd.scm'>
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<div class='path'>path: <a href='/guix/log/?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>root</a>/<a href='/guix/log/gnu?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>gnu</a>/<a href='/guix/log/gnu/services?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>services</a>/<a href='/guix/log/gnu/services/hurd.scm?id=89c5cb4078f52f103e6221978a2ea75e0c474769'>hurd.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/hurd.scm?id=89c5cb4078f52f103e6221978a2ea75e0c474769&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-11-30 01:08:55 +0100'>2021-11-30</span></td><td><a href='/guix/commit/gnu/services/hurd.scm?id=892f1b7273d57b25940700877a02618fe826cc08'>services: Accept &lt;inferior-package&gt;s in lieu of &lt;package&gt;s.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/authentication.scm (fprintd-configuration)
(nslcd-configuration): Substitute file-like objects for package ones.
* gnu/services/cgit.scm (cgit-configuration, opaque-cgit-configuration):
Likewise.
* gnu/services/cups.scm (package-list?, cups-configuration): Likewise.
* gnu/services/dns.scm (verify-knot-configuration)
(ddclient-configuration): Likewise.
* gnu/services/docker.scm (docker-configuration): Likewise.
* gnu/services/file-sharing.scm (transmission-daemon-configuration): Likewise.
* gnu/services/getmail.scm (getmail-configuration): Likewise.
* gnu/services/mail.scm (dovecot-configuration)
(opaque-dovecot-configuration): Likewise.
* gnu/services/messaging.scm (prosody-configuration)
(opaque-prosody-configuration): Likewise.
* gnu/services/monitoring.scm (zabbix-server-configuration)
(zabbix-agent-configuration): Likewise.
* gnu/services/networking.scm (opendht-configuration): Likewise.
* gnu/services/pm.scm (tlp-configuration): Likewise.
* gnu/services/telephony.scm (jami-configuration): Likewise.
* gnu/services/virtualization.scm (libvirt-configuration)
(qemu-guest-agent-configuration): Likewise.
* gnu/services/vpn.scm (openvpn-client-configuration): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>