Pull esi-support into release branch

[powerpc.git] / arch / um / os-Linux / main.c

diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index 172c847..90912aa 100644 (file)
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -16,7 +16,6 @@
 #include "user_util.h"
 #include "kern_util.h"
 #include "mem_user.h"
-#include "time_user.h"
 #include "irq_user.h"
 #include "user.h"
 #include "init.h"
@@ -60,7 +59,7 @@ static __init void do_uml_initcalls(void)
        initcall_t *call;
 
        call = &__uml_initcall_start;
-       while (call < &__uml_initcall_end){;
+       while (call < &__uml_initcall_end){
                (*call)();
                call++;
        }
@@ -75,6 +74,34 @@ static void last_ditch_exit(int sig)
        exit(1);
 }
 
+#define UML_LIB_PATH   ":/usr/lib/uml"
+
+static void setup_env_path(void)
+{
+       char *new_path = NULL;
+       char *old_path = NULL;
+       int path_len = 0;
+
+       old_path = getenv("PATH");
+       /* if no PATH variable is set or it has an empty value
+        * just use the default + /usr/lib/uml
+        */
+       if (!old_path || (path_len = strlen(old_path)) == 0) {
+               putenv("PATH=:/bin:/usr/bin/" UML_LIB_PATH);
+               return;
+       }
+
+       /* append /usr/lib/uml to the existing path */
+       path_len += strlen("PATH=" UML_LIB_PATH) + 1;
+       new_path = malloc(path_len);
+       if (!new_path) {
+               perror("coudn't malloc to set a new PATH");
+               return;
+       }
+       snprintf(new_path, path_len, "PATH=%s" UML_LIB_PATH, old_path);
+       putenv(new_path);
+}
+
 extern int uml_exitcode;
 
 extern void scan_elf_aux( char **envp);
@@ -82,20 +109,8 @@ extern void scan_elf_aux( char **envp);
 int main(int argc, char **argv, char **envp)
 {
        char **new_argv;
-       sigset_t mask;
        int ret, i, err;
 
-       /* Enable all signals except SIGIO - in some environments, we can
-        * enter with some signals blocked
-        */
-
-       sigemptyset(&mask);
-       sigaddset(&mask, SIGIO);
-       if(sigprocmask(SIG_SETMASK, &mask, NULL) < 0){
-               perror("sigprocmask");
-               exit(1);
-       }
-
 #ifdef UML_CONFIG_CMDLINE_ON_HOST
        /* Allocate memory for thread command lines */
        if(argc < 2 || strlen(argv[1]) < THREAD_NAME_LEN - 1){
@@ -127,6 +142,8 @@ int main(int argc, char **argv, char **envp)
 
        set_stklim();
 
+       setup_env_path();
+
        new_argv = malloc((argc + 1) * sizeof(char *));
        if(new_argv == NULL){
                perror("Mallocing argv");