apps/Makefile

@@ -1,4 +1,4 @@
-APPS := init sym sh crash uname uptime hello ps ls args cat stat su
+APPS := init sym sh crash uname uptime hello ps ls args cat stat
 
 APPS_DIR := $(LUNA_ROOT)/apps
 APPS_SRC := $(APPS_DIR)/src

apps/src/su.c

@@ -1,32 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-char* default_argv[] = {"/bin/sh", NULL};
-
-void run_program(char** argv)
-{
-    execv(argv[0], argv);
-
-    perror("execv");
-    exit(EXIT_FAILURE);
-}
-
-int main(int argc, char** argv)
-{
-    if (argc == 1)
-    {
-        fprintf(stderr, "Usage: %s [uid] [command | sh]\n", argv[0]);
-        return EXIT_FAILURE;
-    }
-
-    if (setuid(atoi(argv[1])) < 0)
-    {
-        perror("setuid");
-        return EXIT_FAILURE;
-    }
-
-    if (argc == 2) run_program(default_argv);
-    else
-        run_program(argv + 2);
-}

libs/libc/include/unistd.h

@@ -50,18 +50,6 @@ extern "C"
     /* Returns the current process' effective group ID. */
     gid_t getegid(void);
 
-    /* Sets the current process' real and effective user IDs. */
-    int setuid(uid_t uid);
-
-    /* Sets the current process' effective user ID. */
-    int seteuid(uid_t uid);
-
-    /* Sets the current process' real and effective group IDs. */
-    int setgid(gid_t gid);
-
-    /* Sets the current process' effective group ID. */
-    int setegid(gid_t gid);
-
     /* Terminates the program with the status code status. */
     __lc_noreturn void _exit(int status);
 

libs/libc/src/unistd.cpp

@@ -58,26 +58,6 @@ extern "C"
         return (gid_t)getprocid(ID_EGID);
     }
 
-    int setuid(uid_t uid)
-    {
-        return (int)__lc_fast_syscall2(SYS_setuid, uid, uid);
-    }
-
-    int seteuid(uid_t uid)
-    {
-        return (int)__lc_fast_syscall2(SYS_setuid, getprocid(ID_UID), uid);
-    }
-
-    int setgid(gid_t gid)
-    {
-        return (int)__lc_fast_syscall2(SYS_setgid, gid, gid);
-    }
-
-    int setegid(gid_t gid)
-    {
-        return (int)__lc_fast_syscall2(SYS_setgid, getprocid(ID_GID), gid);
-    }
-
     unsigned int sleep(unsigned int seconds)
     {
         return msleep(seconds * 1000);