1800, 2400, 4800, 9600, 19200, 38400
};
+#ifdef HAVE_PERSONALITY_ADDR_NO_RANDOMIZE
+# include <sys/personality.h>
+
+/* Disable address randomization in the current process. Return true
+ if addresses were randomized but this has been disabled, false
+ otherwise. */
+bool
+disable_address_randomization (void)
+{
+ bool disabled = false;
+ int pers = personality (0xffffffff);
+ disabled = (! (pers & ADDR_NO_RANDOMIZE)
+ && 0 <= personality (pers | ADDR_NO_RANDOMIZE));
+ return disabled;
+}
+#endif
+
+/* Execute the program in FILE, with argument vector ARGV and environ
+ ENVP. Return an error number if unsuccessful. This is like execve
+ except it reenables ASLR in the executed program if necessary, and
+ on error it returns an error number rather than -1. */
+int
+emacs_exec_file (char const *file, char *const *argv, char *const *envp)
+{
+#ifdef HAVE_PERSONALITY_ADDR_NO_RANDOMIZE
+ int pers = getenv ("EMACS_HEAP_EXEC") ? personality (0xffffffff) : -1;
+ bool change_personality = 0 <= pers && pers & ADDR_NO_RANDOMIZE;
+ if (change_personality)
+ personality (pers & ~ADDR_NO_RANDOMIZE);
+#endif
+
+ execve (file, argv, envp);
+ int err = errno;
+
+#ifdef HAVE_PERSONALITY_ADDR_NO_RANDOMIZE
+ if (change_personality)
+ personality (pers);
+#endif
+
+ return err;
+}
+
/* If FD is not already open, arrange for it to be open with FLAGS. */
static void
force_open (int fd, int flags)
emacs_perror (char const *message)
{
int err = errno;
- char const *error_string = strerror (err);
+ char const *error_string = emacs_strerror (err);
char const *command = (initial_argv && initial_argv[0]
? initial_argv[0] : "emacs");
/* Write it out all at once, if it's short; this is less likely to
locale_t loc = newlocale (LC_COLLATE_MASK | LC_CTYPE_MASK,
SSDATA (locale), 0);
if (!loc)
- error ("Invalid locale %s: %s", SSDATA (locale), strerror (errno));
+ error ("Invalid locale %s: %s", SSDATA (locale), emacs_strerror (errno));
if (! NILP (ignore_case))
for (int i = 1; i < 3; i++)
}
# ifndef HAVE_NEWLOCALE
if (err)
- error ("Invalid locale or string for collation: %s", strerror (err));
+ error ("Invalid locale or string for collation: %s", emacs_strerror (err));
# else
if (err)
- error ("Invalid string for collation: %s", strerror (err));
+ error ("Invalid string for collation: %s", emacs_strerror (err));
# endif
SAFE_FREE ();