diff -ru procps-ng-4.0.4.orig/library/devname.c procps-ng-4.0.4/library/devname.c
--- procps-ng-4.0.4.orig/library/devname.c	2023-07-11 11:09:18.436786212 +0200
+++ procps-ng-4.0.4/library/devname.c	2024-08-13 11:40:55.012140114 +0200
@@ -287,7 +287,7 @@
   struct stat sbuf;
   char path[32];
   ssize_t count;
-  const int len = snprintf(path, sizeof path, "/proc/%d/%s", pid, name);  /* often permission denied */
+  const int len = snprintf(path, sizeof path, "/proc/sysproc/%d/%s", pid, name);  /* often permission denied */
   if(len <= 0 || (size_t)len >= sizeof path) return 0;
   count = readlink(path,buf,TTY_NAME_SIZE-1);
   if(count <= 0 || count >= TTY_NAME_SIZE-1) return 0;
@@ -305,7 +305,7 @@
   char path[32];
   FILE *fp;
   char *lf;
-  sprintf (path, "/proc/%d/ctty", pid);  /* often permission denied */
+  sprintf (path, "/proc/sysproc/%d/ctty", pid);  /* often permission denied */
   fp = fopen (path, "r");
   if (!fp)
     return 0;
diff -ru procps-ng-4.0.4.orig/library/readproc.c procps-ng-4.0.4/library/readproc.c
--- procps-ng-4.0.4.orig/library/readproc.c	2023-07-11 11:09:18.436786212 +0200
+++ procps-ng-4.0.4/library/readproc.c	2024-08-13 11:38:26.689488350 +0200
@@ -1389,7 +1389,7 @@
             p->tgid = strtoul(ent->d_name, NULL, 10);
             if (errno == 0) {
                 p->tid = p->tgid;
-                snprintf(path, PROCPATHLEN, "/proc/%d", p->tgid);
+                snprintf(path, PROCPATHLEN, "/proc/sysproc/%d", p->tgid);
                 return 1;
             }
         }
@@ -1408,7 +1408,7 @@
       closedir(PT->taskdir);
     }
     // use "path" as some tmp space
-    snprintf(path, PROCPATHLEN, "/proc/%d/task", p->tgid);
+    snprintf(path, PROCPATHLEN, "/proc/sysproc/%d/task", p->tgid);
     PT->taskdir = opendir(path);
     if(!PT->taskdir) return 0;
     PT->taskdir_user = p->tgid;
@@ -1421,7 +1421,7 @@
   t->tid = strtoul(ent->d_name, NULL, 10);
   t->tgid = p->tgid;
 //t->ppid = p->ppid;  // cover for kernel behavior? we want both actually...?
-  snprintf(path, PROCPATHLEN, "/proc/%d/task/%.10s", p->tgid, ent->d_name);
+  snprintf(path, PROCPATHLEN, "/proc/sysproc/%d/task/%.10s", p->tgid, ent->d_name);
   return 1;
 }
 
@@ -1435,7 +1435,7 @@
   char *path = PT->path;
 
   if (pid) {
-    snprintf(path, PROCPATHLEN, "/proc/%d", pid);
+    snprintf(path, PROCPATHLEN, "/proc/sysproc/%d", pid);
     p->tid = p->tgid = pid;        // this tgid may be a huge fib |
 
     /* the 'status' directory is the only place where we find the |
diff -ru procps-ng-4.0.4.orig/src/pidof.c procps-ng-4.0.4/src/pidof.c
--- procps-ng-4.0.4.orig/src/pidof.c	2023-08-15 13:02:25.783784823 +0200
+++ procps-ng-4.0.4/src/pidof.c	2024-08-13 11:31:47.634655407 +0200
@@ -124,7 +124,7 @@
 	ssize_t path_alloc_size;
 	ssize_t len;
 
-	snprintf(link, sizeof(link), "/proc/%d/%s", pid, base_name);
+	snprintf(link, sizeof(link), "/proc/sysproc/%d/%s", pid, base_name);
 
 	len = path_alloc_size = 0;
 	result = NULL;
diff -ru procps-ng-4.0.4.orig/src/pmap.c procps-ng-4.0.4/src/pmap.c
--- procps-ng-4.0.4.orig/src/pmap.c	2023-08-15 12:43:38.772140122 +0200
+++ procps-ng-4.0.4/src/pmap.c	2024-08-13 11:28:36.375534274 +0200
@@ -554,11 +554,11 @@
 	printf("%u:   %s\n", PIDS_VAL(tgid, s_int, p, Pids_info), PIDS_VAL(cmdline, str, p, Pids_info));
 
 	if (x_option || X_option || c_option) {
-		snprintf(buf, sizeof buf, "/proc/%u/smaps", PIDS_VAL(tgid, s_int, p, Pids_info));
+		snprintf(buf, sizeof buf, "/proc/sysproc/%u/smaps", PIDS_VAL(tgid, s_int, p, Pids_info));
 		if ((fp = fopen(buf, "r")) == NULL)
 			return 1;
 	} else {
-		snprintf(buf, sizeof buf, "/proc/%u/maps", PIDS_VAL(tgid, s_int, p, Pids_info));
+		snprintf(buf, sizeof buf, "/proc/sysproc/%u/maps", PIDS_VAL(tgid, s_int, p, Pids_info));
 		if ((fp = fopen(buf, "r")) == NULL)
 			return 1;
 	}
diff -ru procps-ng-4.0.4.orig/src/ps/global.c procps-ng-4.0.4/src/ps/global.c
--- procps-ng-4.0.4.orig/src/ps/global.c	2023-08-16 00:54:03.759538026 +0200
+++ procps-ng-4.0.4/src/ps/global.c	2024-08-13 11:25:38.536358536 +0200
@@ -176,7 +176,7 @@
 const char     *bsd_v_format = (const char *)0xdeadbeef;
 int             bsd_c_option = -1;
 int             bsd_e_option = -1;
-unsigned        cached_euid = 0xffffffff;
+uid_t           cached_euid = 0xffffffff;
 int             cached_tty = -1;
 char            forest_prefix[4 * 32*1024 + 100];     // FIXME
 int             forest_type = -1;
diff -ru procps-ng-4.0.4.orig/src/pwdx.c procps-ng-4.0.4/src/pwdx.c
--- procps-ng-4.0.4.orig/src/pwdx.c	2023-07-11 11:09:18.464787022 +0200
+++ procps-ng-4.0.4/src/pwdx.c	2024-08-13 11:31:25.734756041 +0200
@@ -53,8 +53,8 @@
 	long pid;
 	char *end = NULL;
 
-	if (!strncmp("/proc/", input, 6))
-		skip = 6;
+	if (!strncmp("/proc/sysproc/", input, 14))
+		skip = 14;
 	errno = 0;
 	pid = strtol(input + skip, &end, 10);
 
@@ -122,7 +122,7 @@
 		 * the first char is possible
 		 */
 		if (argv[i][0] != '/')
-			snprintf(buf, buflen, "/proc/%s/cwd", argv[i]);
+			snprintf(buf, buflen, "/proc/sysproc/%s/cwd", argv[i]);
 		else
 			snprintf(buf, buflen, "%s/cwd", argv[i]);