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path: root/java/openjdk8/files/patch-jdk-src-solaris-bin-java_md_solinux.c
blob: c858a0c14fc1c2cbb549f43e4631ee751e299361 (plain) (blame)
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--- jdk/src/solaris/bin/java_md_solinux.c.orig
+++ jdk/src/solaris/bin/java_md_solinux.c
@@ -35,6 +35,9 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <sys/types.h>
+#ifdef __FreeBSD__
+#include <sys/sysctl.h>
+#endif
 #include "manifest_info.h"
 #include "version_comp.h"
 
@@ -925,7 +928,7 @@
  * onwards the filename returned in DL_info structure from dladdr is
  * an absolute pathname so technically realpath isn't required.
  * On Linux we read the executable name from /proc/self/exe.
- * On FreeBSD we read the executable name from /proc/curproc/file.
+ * On FreeBSD, we get the executable name via sysctl(3).
  * As a fallback, and for platforms other than Solaris, Linux, and
  * FreeBSD, we use FindExecName to compute the executable name.
  */
@@ -954,13 +957,9 @@
             }
         }
     }
-#elif defined(__linux__) || defined(__FreeBSD__)
+#elif defined(__linux__)
     {
-#if defined(__FreeBSD__)
-        const char* self = "/proc/curproc/file";
-#else
         const char* self = "/proc/self/exe";
-#endif
         char buf[PATH_MAX+1];
         int len = readlink(self, buf, PATH_MAX);
         if (len >= 0) {
@@ -968,6 +967,16 @@
             exec_path = JLI_StringDup(buf);
         }
     }
+#elif defined(__FreeBSD__)
+    {
+        char buf[PATH_MAX+1];
+        int name[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+        size_t len = sizeof(buf);
+        if (sysctl(name, 4, buf, &len, NULL, 0) == 0 && len > 0) {
+            buf[len] = '\0';
+            exec_path = JLI_StringDup(buf);
+        }
+    }
 #else /* !__solaris__ && !__linux__ && !__FreeBSD__ */
     {
         /* Not implemented */