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-rw-r--r--arch/um/kernel/process.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 1b5ef3e96c71..c45a60e9c92d 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -32,6 +32,7 @@
#include "uml-config.h"
#include "choose-mode.h"
#include "mode.h"
+#include "tempfile.h"
#ifdef UML_CONFIG_MODE_SKAS
#include "skas.h"
#include "skas_ptrace.h"
@@ -358,11 +359,16 @@ void forward_pending_sigio(int target)
kill(target, SIGIO);
}
+int ptrace_faultinfo = 0;
+int proc_mm = 1;
+
+extern void *__syscall_stub_start, __syscall_stub_end;
+
#ifdef UML_CONFIG_MODE_SKAS
-static inline int check_skas3_ptrace_support(void)
+static inline void check_skas3_ptrace_support(void)
{
struct ptrace_faultinfo fi;
- int pid, n, ret = 1;
+ int pid, n;
printf("Checking for the skas3 patch in the host...");
pid = start_ptraced_child();
@@ -374,33 +380,31 @@ static inline int check_skas3_ptrace_support(void)
else {
perror("not found");
}
- ret = 0;
- } else {
+ }
+ else {
+ ptrace_faultinfo = 1;
printf("found\n");
}
init_registers(pid);
stop_ptraced_child(pid, 1, 1);
-
- return(ret);
}
int can_do_skas(void)
{
- int ret = 1;
-
printf("Checking for /proc/mm...");
if (os_access("/proc/mm", OS_ACC_W_OK) < 0) {
+ proc_mm = 0;
printf("not found\n");
- ret = 0;
goto out;
- } else {
+ }
+ else {
printf("found\n");
}
- ret = check_skas3_ptrace_support();
out:
- return ret;
+ check_skas3_ptrace_support();
+ return 1;
}
#else
int can_do_skas(void)