whitespace style change

[platform/upstream/ltrace.git] / execute_program.c

diff --git a/execute_program.c b/execute_program.c
index 5fd6379..ba53ebf 100644 (file)
--- a/execute_program.c
+++ b/execute_program.c
@@ -1,3 +1,25 @@
+/*
+ * This file is part of ltrace.
+ * Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.
+ * Copyright (C) 2010 Joe Damato
+ * Copyright (C) 1998,1999,2003,2008,2009 Juan Cespedes
+ * Copyright (C) 2006 Ian Wienand
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
 #include "config.h"
 
 #include <stdio.h>
@@ -10,10 +32,13 @@
 #include <pwd.h>
 #include <grp.h>
 
-#include "common.h"
+#include "backend.h"
+#include "options.h"
+#include "debug.h"
 
 static void
-change_uid(Process *proc) {
+change_uid(const char * command)
+{
        uid_t run_uid, run_euid;
        gid_t run_gid, run_egid;
 
@@ -45,7 +70,7 @@ change_uid(Process *proc) {
                run_euid = run_uid;
                run_egid = run_gid;
 
-               if (!stat(proc->filename, &statbuf)) {
+               if (!stat(command, &statbuf)) {
                        if (statbuf.st_mode & S_ISUID) {
                                run_euid = statbuf.st_uid;
                        }
@@ -64,28 +89,30 @@ change_uid(Process *proc) {
        }
 }
 
-void
-execute_program(Process *sp, char **argv) {
+pid_t
+execute_program(const char * command, char **argv)
+{
        pid_t pid;
 
-       debug(1, "Executing `%s'...", sp->filename);
+       debug(1, "Executing `%s'...", command);
 
        pid = fork();
        if (pid < 0) {
+       fail:
                perror("ltrace: fork");
                exit(1);
        } else if (!pid) {      /* child */
-               change_uid(sp);
+               change_uid(command);
                trace_me();
-               execvp(sp->filename, argv);
-               fprintf(stderr, "Can't execute `%s': %s\n", sp->filename,
+               execvp(command, argv);
+               fprintf(stderr, "Can't execute `%s': %s\n", command,
                        strerror(errno));
                _exit(1);
        }
 
-       debug(1, "PID=%d", pid);
-
-       sp->pid = pid;
+       if (wait_for_proc(pid) < 0)
+               goto fail;
 
-       return;
+       debug(1, "PID=%d", pid);
+       return pid;
 }