Merge branch 'master' into experimental

1 files changed, 87 insertions, 0 deletions

diff --git a/src/CLI/run-command.cpp b/src/CLI/run-command.cpp
new file mode 100644
index 0000000..80184cf
--- /dev/null
+++ b/src/CLI/run-command.cpp
@@ -0,0 +1,87 @@
+/*
+    Copyright (C) 2009  RedHat inc.
+
+    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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "run-command.h"
+#include "abrtlib.h"
+
+/*
+  Inspired by git code.
+  http://git.kernel.org/?p=git/git.git;a=blob;f=run-command.c;hb=HEAD
+*/
+
+struct child_process
+{
+  const char **argv;
+  pid_t pid;
+};
+
+static int start_command(struct child_process *cmd)
+{
+  cmd->pid = fork();
+  if (cmd->pid == 0)
+  { // new process
+    execvp(cmd->argv[0], (char *const*)cmd->argv);
+    exit(127);
+  }
+  if (cmd->pid < 0)
+  {
+    error_msg_and_die("Unable to fork for %s: %s", cmd->argv[0], strerror(errno));
+    return -1;
+  }
+  return 0;
+}
+
+static int finish_command(struct child_process *cmd)
+{
+  pid_t waiting;
+  int status, code = -1;
+  while ((waiting = waitpid(cmd->pid, &status, 0)) < 0 && errno == EINTR)
+    ;       /* nothing */
+
+  if (waiting < 0)
+    error_msg_and_die("waitpid for %s failed: %s", cmd->argv[0], strerror(errno));
+  else if (waiting != cmd->pid)
+    error_msg_and_die("waitpid is confused (%s)", cmd->argv[0]);
+  else if (WIFSIGNALED(status))
+  {
+    code = WTERMSIG(status);
+    error_msg("%s died of signal %d", cmd->argv[0], code);
+  }
+  else if (WIFEXITED(status))
+  {
+    code = WEXITSTATUS(status);
+    if (code == 127)
+    {
+      code = -1;
+      error_msg_and_die("cannot run %s: %s", cmd->argv[0], strerror(ENOENT));
+    }
+  }
+  else
+    error_msg_and_die("waitpid is confused (%s)", cmd->argv[0]);
+
+  return code;
+}
+
+int run_command(const char **argv)
+{
+  struct child_process cmd;
+  cmd.argv = argv;
+  int code = start_command(&cmd);
+  if (code)
+    return code;
+  return finish_command(&cmd);
+}