[gtk+] GMountOperation::show-processes support for OpenBSD using kvm(3)

[Jonathan Matthew <jmatthew src gnome org>]

commit ad9da2727d3e3243fd052c9feb0c55645e87d384
Author: Jonathan Matthew <jmatthew openbsd org>
Date:   Fri Jul 8 10:24:32 2011 +1000

    GMountOperation::show-processes support for OpenBSD using kvm(3)

 configure.ac                |    7 +++
 gtk/gtkmountoperation-x11.c |  100 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4caa7df..d0b173a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -165,6 +165,9 @@ case $host in
   *-*-linux*)
     os_linux=yes
     ;;
+  *-*-openbsd*)
+    os_openbsd=yes
+    ;;
 esac
 
 dnl
@@ -1300,6 +1303,10 @@ if test "x$enable_x11_backend" = xyes; then
   GTK_PACKAGES="$GTK_PACKAGES pangoft2"
 fi
 GTK_EXTRA_LIBS=
+if test x"$os_openbsd" = xyes; then
+  GTK_EXTRA_LIBS="$GTK_EXTRA_LIBS -lkvm"
+fi
+
 GTK_EXTRA_CFLAGS=
 GTK_DEP_LIBS="$GDK_EXTRA_LIBS $GTK_DEP_LIBS_FOR_X `$PKG_CONFIG --libs $PANGO_PACKAGES $GTK_PACKAGES_FOR_X $GTK_PACKAGES` $GTK_EXTRA_LIBS"
 GTK_DEP_CFLAGS="`$PKG_CONFIG --cflags  gthread-2.0 $GDK_PACKAGES $GTK_PACKAGES` $GDK_EXTRA_CFLAGS $GTK_EXTRA_CFLAGS"
diff --git a/gtk/gtkmountoperation-x11.c b/gtk/gtkmountoperation-x11.c
index d757139..1663a02 100644
--- a/gtk/gtkmountoperation-x11.c
+++ b/gtk/gtkmountoperation-x11.c
@@ -42,6 +42,12 @@
 #include <signal.h>
 #include <errno.h>
 
+#if defined(__OpenBSD__)
+#include <kvm.h>
+#include <fcntl.h>
+#include <sys/sysctl.h>
+#endif
+
 #include "gtkmountoperationprivate.h"
 
 /* ---------------------------------------------------------------------------------------------------- */
@@ -711,6 +717,100 @@ pid_get_command_line (GPid pid)
 }
 
 /* ---------------------------------------------------------------------------------------------------- */
+
+#elif defined(__OpenBSD__)
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+static GPid
+pid_get_parent (GPid pid)
+{
+  struct kinfo_proc *proc;
+  int count;
+  kvm_t *kvm;
+  GPid ppid = 0;
+
+  kvm = kvm_openfiles (NULL, NULL, NULL, KVM_NO_FILES, NULL);
+  if (kvm == NULL)
+    return 0;
+
+  proc = kvm_getprocs (kvm, KERN_PROC_PID, pid, sizeof(struct kinfo_proc), &count);
+  if (count == 1)
+    ppid = proc->p_ppid;
+
+  kvm_close (kvm);
+  return ppid;
+}
+
+static gchar *
+pid_get_env (GPid pid, const gchar *key)
+{
+  kvm_t *kvm;
+  struct kinfo_proc *proc;
+  char **strs;
+  char *ret;
+  char *end;
+  int key_len;
+  int count;
+  int i;
+
+  kvm = kvm_openfiles (NULL, NULL, NULL, KVM_NO_FILES, NULL);
+  if (kvm == NULL)
+    return NULL;
+
+  key_len = strlen (key);
+
+  ret = NULL;
+  proc = kvm_getprocs (kvm, KERN_PROC_PID, pid, sizeof(struct kinfo_proc), &count);
+  if (proc != NULL)
+    {
+      strs = kvm_getenvv (kvm, proc, 0);
+      for (i = 0; strs[i] != NULL; i++)
+	{
+	  if (g_str_has_prefix (strs[i], key) && (*(strs[i] + key_len) == '='))
+	    {
+	      ret = g_strdup (strs[i] + key_len + 1);
+
+	      /* skip invalid UTF-8 */
+	      if (!g_utf8_validate (ret, -1, (const gchar **) &end))
+		*end = '\0';
+	      break;
+	    }
+	}
+    }
+
+  kvm_close (kvm);
+  return ret;
+}
+
+static gchar *
+pid_get_command_line (GPid pid)
+{
+  kvm_t *kvm;
+  struct kinfo_proc *proc;
+  int count;
+  char **strs;
+  char *ret;
+  char *end;
+
+  kvm = kvm_openfiles (NULL, NULL, NULL, KVM_NO_FILES, NULL);
+  if (kvm == NULL)
+    return NULL;
+
+  proc = kvm_getprocs (kvm, KERN_PROC_PID, pid, sizeof (struct kinfo_proc), &count);
+  if (proc == NULL)
+    return NULL;
+
+  strs = kvm_getargv (kvm, proc, 0);
+  ret = g_strjoinv (" ", strs);
+  /* skip invalid UTF-8 */
+  if (!g_utf8_validate (ret, -1, (const gchar **) &end))
+    *end = '\0';
+
+  kvm_close (kvm);
+  return ret;
+}
+
 #else
 
 /* TODO: please implement for your OS - must return valid UTF-8 */