Follow up r1617201:

Takashi Sato · notroj · commit 08cc879a7b32 · 2025-12-19T09:27:36.000Z
Return EPERM if the uid is not root on chroot-ing. Pointed out by trawick on <CAKUrXK6EGmG1ZD4+UFZ05yznTe6twOU3n57YeO-Ney-_VV_dCQ@mail.gmail.com> git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1618778 13f79535-47bb-0310-9956-ffa450edef68 (cherry picked from commit 89b58e8)
diff --git a/modules/arch/unix/mod_unixd.c b/modules/arch/unix/mod_unixd.c
@@ -152,7 +152,7 @@ AP_DECLARE(int) ap_unixd_setup_child(void)
         if (geteuid()) {
             ap_log_error(APLOG_MARK, APLOG_ALERT, 0, NULL, APLOGNO(02158)
                          "Cannot chroot when not started as root");
-            return rv;
+            return EPERM;
         }
 
         if (chdir(ap_unixd_config.chroot_dir) != 0) {

Original file line number	Diff line number	Diff line change
`@@ -152,7 +152,7 @@ AP_DECLARE(int) ap_unixd_setup_child(void)`
`152`	`152`	`if (geteuid()) {`
`153`	`153`	`ap_log_error(APLOG_MARK, APLOG_ALERT, 0, NULL, APLOGNO(02158)`
`154`	`154`	`"Cannot chroot when not started as root");`
`155`		`- return rv;`
	`155`	`+ return EPERM;`
`156`	`156`	`}`
`157`	`157`
`158`	`158`	`if (chdir(ap_unixd_config.chroot_dir) != 0) {`