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Diffstat (limited to 'include/linux/cn_proc.h')
| -rw-r--r-- | include/linux/cn_proc.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/include/linux/cn_proc.h b/include/linux/cn_proc.h new file mode 100644 index 00000000000..47dac5ea8d3 --- /dev/null +++ b/include/linux/cn_proc.h @@ -0,0 +1,131 @@ +/* + * cn_proc.h - process events connector + * + * Copyright (C) Matt Helsley, IBM Corp. 2005 + * Based on cn_fork.h by Nguyen Anh Quynh and Guillaume Thouvenin + * Copyright (C) 2005 Nguyen Anh Quynh <aquynh@gmail.com> + * Copyright (C) 2005 Guillaume Thouvenin <guillaume.thouvenin@bull.net> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2.1 of the GNU Lesser General Public License + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef CN_PROC_H +#define CN_PROC_H + +#include <linux/types.h> + +/* + * Userspace sends this enum to register with the kernel that it is listening + * for events on the connector. + */ +enum proc_cn_mcast_op { + PROC_CN_MCAST_LISTEN = 1, + PROC_CN_MCAST_IGNORE = 2 +}; + +/* + * From the user's point of view, the process + * ID is the thread group ID and thread ID is the internal + * kernel "pid". So, fields are assigned as follow: + * + * In user space - In kernel space + * + * parent process ID = parent->tgid + * parent thread ID = parent->pid + * child process ID = child->tgid + * child thread ID = child->pid + */ + +struct proc_event { + enum what { + /* Use successive bits so the enums can be used to record + * sets of events as well + */ + PROC_EVENT_NONE = 0x00000000, + PROC_EVENT_FORK = 0x00000001, + PROC_EVENT_EXEC = 0x00000002, + PROC_EVENT_UID = 0x00000004, + PROC_EVENT_GID = 0x00000040, + PROC_EVENT_SID = 0x00000080, + /* "next" should be 0x00000400 */ + /* "last" is the last process event: exit */ + PROC_EVENT_EXIT = 0x80000000 + } what; + __u32 cpu; + __u64 __attribute__((aligned(8))) timestamp_ns; + /* Number of nano seconds since system boot */ + union { /* must be last field of proc_event struct */ + struct { + __u32 err; + } ack; + + struct fork_proc_event { + __kernel_pid_t parent_pid; + __kernel_pid_t parent_tgid; + __kernel_pid_t child_pid; + __kernel_pid_t child_tgid; + } fork; + + struct exec_proc_event { + __kernel_pid_t process_pid; + __kernel_pid_t process_tgid; + } exec; + + struct id_proc_event { + __kernel_pid_t process_pid; + __kernel_pid_t process_tgid; + union { + __u32 ruid; /* task uid */ + __u32 rgid; /* task gid */ + } r; + union { + __u32 euid; + __u32 egid; + } e; + } id; + + struct sid_proc_event { + __kernel_pid_t process_pid; + __kernel_pid_t process_tgid; + } sid; + + struct exit_proc_event { + __kernel_pid_t process_pid; + __kernel_pid_t process_tgid; + __u32 exit_code, exit_signal; + } exit; + } event_data; +}; + +#ifdef __KERNEL__ +#ifdef CONFIG_PROC_EVENTS +void proc_fork_connector(struct task_struct *task); +void proc_exec_connector(struct task_struct *task); +void proc_id_connector(struct task_struct *task, int which_id); +void proc_sid_connector(struct task_struct *task); +void proc_exit_connector(struct task_struct *task); +#else +static inline void proc_fork_connector(struct task_struct *task) +{} + +static inline void proc_exec_connector(struct task_struct *task) +{} + +static inline void proc_id_connector(struct task_struct *task, + int which_id) +{} + +static inline void proc_sid_connector(struct task_struct *task) +{} + +static inline void proc_exit_connector(struct task_struct *task) +{} +#endif /* CONFIG_PROC_EVENTS */ +#endif /* __KERNEL__ */ +#endif /* CN_PROC_H */ |