execve implementation for Linux w/ linuxthreads.

1 files changed, 73 insertions, 0 deletions

diff --git a/linuxthreads/sysdeps/unix/sysv/linux/execve.c b/linuxthreads/sysdeps/unix/sysv/linux/execve.c
new file mode 100644
index 0000000..9fa912b
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/execve.c
@@ -0,0 +1,73 @@
+/* Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <sysdep.h>
+#include <alloca.h>
+#include <sys/syscall.h>
+#include <bp-checks.h>
+
+extern int __syscall_execve (const char *__unbounded file,
+			     char *__unbounded const *__unbounded argv,
+			     char *__unbounded const *__unbounded envp);
+extern void __pthread_kill_other_threads_np (void);
+weak_extern (__pthread_kill_other_threads_np)
+
+
+int
+__execve (file, argv, envp)
+     const char *file;
+     char *const argv[];
+     char *const envp[];
+{
+  /* If this is a threaded application kill all other threads.  */
+  if (__pthread_kill_other_threads_np)
+    __pthread_kill_other_threads_np ();
+#if __BOUNDED_POINTERS__
+  {
+    char *const *v;
+    int i;
+    char *__unbounded *__unbounded ubp_argv;
+    char *__unbounded *__unbounded ubp_envp;
+    char *__unbounded *__unbounded ubp_v;
+
+    for (v = argv; *v; v++)
+      ;
+    i = v - argv + 1;
+    ubp_argv = (char *__unbounded *__unbounded) alloca (sizeof (*ubp_argv) * i);
+    for (v = argv, ubp_v = ubp_argv; --i; v++, ubp_v++)
+      *ubp_v = CHECK_STRING (*v);
+    *ubp_v = 0;
+
+    for (v = envp; *v; v++)
+      ;
+    i = v - envp + 1;
+    ubp_envp = (char *__unbounded *__unbounded) alloca (sizeof (*ubp_envp) * i);
+    for (v = envp, ubp_v = ubp_envp; --i; v++, ubp_v++)
+      *ubp_v = CHECK_STRING (*v);
+    *ubp_v = 0;
+
+    return INLINE_SYSCALL (execve, 3, CHECK_STRING (file), ubp_argv, ubp_envp);
+  }
+#else
+  return INLINE_SYSCALL (execve, 3, file, argv, envp);
+#endif
+}
+weak_alias (__execve, execve)