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authorMarcel Holtmann <marcel@holtmann.org>2007-01-21 20:23:56 +0000
committerMarcel Holtmann <marcel@holtmann.org>2007-01-21 20:23:56 +0000
commit2d5100c20ce354fb1c2d936a719779a85c99cb11 (patch)
treebc43d3883fe62b4a0f73fc2cbe9b178be2f7300b
parent49f7899a1bde827dff68a755977be4f0cb52f20e (diff)
Add process handling related files
-rw-r--r--transfer/process.c123
-rw-r--r--transfer/process.h25
2 files changed, 148 insertions, 0 deletions
diff --git a/transfer/process.c b/transfer/process.c
new file mode 100644
index 00000000..39145f42
--- /dev/null
+++ b/transfer/process.c
@@ -0,0 +1,123 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2006-2007 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * 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
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+
+#include <glib.h>
+
+#include "logging.h"
+#include "process.h"
+
+static void child_exit(GPid pid, gint status, gpointer data)
+{
+ debug("Child with PID %d exits with status %d", pid, status);
+
+ debug("Exit status %d", WEXITSTATUS(status));
+}
+
+int create_reader(uid_t uid, const char *pathname,
+ GIOFunc func, gpointer user_data)
+{
+ pid_t pid;
+ unsigned char buf[512];
+ int fd, pfd[2], len, written;
+
+ if (pipe(pfd) < 0) {
+ error("Failed to create new pipe");
+ return -1;
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ error("Failed to fork new process");
+ close(pfd[0]);
+ close(pfd[1]);
+ return -1;
+ }
+
+ if (pid > 0) {
+ GIOChannel *io;
+
+ g_child_watch_add(pid, child_exit, NULL);
+
+ close(pfd[1]);
+
+ io = g_io_channel_unix_new(pfd[0]);
+ g_io_channel_set_close_on_unref(io, TRUE);
+
+ g_io_add_watch(io, G_IO_IN, func, user_data);
+
+ g_io_channel_unref(io);
+
+ return 0;
+ }
+
+ /* Child process */
+
+ close(pfd[0]);
+
+ if (setuid(uid) < 0) {
+ error("Failed to switch to UID %d", uid);
+ close(pfd[1]);
+ exit(EXIT_FAILURE);
+ }
+
+ fd = open(pathname, O_RDONLY);
+ if (fd < 0) {
+ error("Failed to open file %s: %s",
+ pathname, strerror(errno));
+ close(pfd[1]);
+ exit(EXIT_FAILURE);
+ }
+
+ while (1) {
+ len = read(fd, buf, sizeof(buf));
+ if (len <= 0) {
+ debug("Reading failed");
+ break;
+ }
+
+ written = write(pfd[1], buf, len);
+ if (written < len) {
+ debug("Writing failed");
+ break;
+ }
+ }
+
+ debug("Reader finished");
+
+ close(fd);
+
+ close(pfd[1]);
+
+ exit(EXIT_SUCCESS);
+}
diff --git a/transfer/process.h b/transfer/process.h
new file mode 100644
index 00000000..e55be6f6
--- /dev/null
+++ b/transfer/process.h
@@ -0,0 +1,25 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2006-2007 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * 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
+ *
+ */
+
+int create_reader(uid_t uid, const char *pathname,
+ GIOFunc func, gpointer user_data);