Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / kmod.h

diff --git a/kernel/include/linux/kmod.h b/kernel/include/linux/kmod.h
new file mode 100644 (file)
index 0000000..0555cc6
--- /dev/null
+++ b/kernel/include/linux/kmod.h
@@ -0,0 +1,107 @@
+#ifndef __LINUX_KMOD_H__
+#define __LINUX_KMOD_H__
+
+/*
+ *     include/linux/kmod.h
+ *
+ *      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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/gfp.h>
+#include <linux/stddef.h>
+#include <linux/errno.h>
+#include <linux/compiler.h>
+#include <linux/workqueue.h>
+#include <linux/sysctl.h>
+
+#define KMOD_PATH_LEN 256
+
+#ifdef CONFIG_MODULES
+extern char modprobe_path[]; /* for sysctl */
+/* modprobe exit status on success, -ve on error.  Return value
+ * usually useless though. */
+extern __printf(2, 3)
+int __request_module(bool wait, const char *name, ...);
+#define request_module(mod...) __request_module(true, mod)
+#define request_module_nowait(mod...) __request_module(false, mod)
+#define try_then_request_module(x, mod...) \
+       ((x) ?: (__request_module(true, mod), (x)))
+#else
+static inline int request_module(const char *name, ...) { return -ENOSYS; }
+static inline int request_module_nowait(const char *name, ...) { return -ENOSYS; }
+#define try_then_request_module(x, mod...) (x)
+#endif
+
+
+struct cred;
+struct file;
+
+#define UMH_NO_WAIT    0       /* don't wait at all */
+#define UMH_WAIT_EXEC  1       /* wait for the exec, but not the process */
+#define UMH_WAIT_PROC  2       /* wait for the process to complete */
+#define UMH_KILLABLE   4       /* wait for EXEC/PROC killable */
+
+struct subprocess_info {
+       struct work_struct work;
+       struct completion *complete;
+       char *path;
+       char **argv;
+       char **envp;
+       int wait;
+       int retval;
+       int (*init)(struct subprocess_info *info, struct cred *new);
+       void (*cleanup)(struct subprocess_info *info);
+       void *data;
+};
+
+extern int
+call_usermodehelper(char *path, char **argv, char **envp, int wait);
+
+extern struct subprocess_info *
+call_usermodehelper_setup(char *path, char **argv, char **envp, gfp_t gfp_mask,
+                         int (*init)(struct subprocess_info *info, struct cred *new),
+                         void (*cleanup)(struct subprocess_info *), void *data);
+
+extern int
+call_usermodehelper_exec(struct subprocess_info *info, int wait);
+
+extern struct ctl_table usermodehelper_table[];
+
+enum umh_disable_depth {
+       UMH_ENABLED = 0,
+       UMH_FREEZING,
+       UMH_DISABLED,
+};
+
+extern void usermodehelper_init(void);
+
+extern int __usermodehelper_disable(enum umh_disable_depth depth);
+extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth);
+
+static inline int usermodehelper_disable(void)
+{
+       return __usermodehelper_disable(UMH_DISABLED);
+}
+
+static inline void usermodehelper_enable(void)
+{
+       __usermodehelper_set_disable_depth(UMH_ENABLED);
+}
+
+extern int usermodehelper_read_trylock(void);
+extern long usermodehelper_read_lock_wait(long timeout);
+extern void usermodehelper_read_unlock(void);
+
+#endif /* __LINUX_KMOD_H__ */