1 ////////////////////////////////////////////////////////////////////////////////////
6 // This file is C source for SWAP.
9 // AUTHOR: L.Komkov, S.Dianov, A.Gerenkov
10 // COMPANY NAME: Samsung Research Center in Moscow
11 // DEPT NAME: Advanced Software Group
12 // CREATED: 2008.02.15
14 // REVISION DATE: 2008.12.03
16 ////////////////////////////////////////////////////////////////////////////////////
18 #if !defined(__STORAGE_H__)
24 #include "probes_manager.h"
26 #include "event_tmpl.h"
28 ///////////////////////////////////////////////////////////////////////////////////////////////////
30 #ifndef __DISABLE_RELAYFS
31 extern struct rchan* GetRelayChannel(void);
32 extern struct dentry* GetRelayDir(void);
33 #endif //__DISABLE_RELAYFS
35 extern int EnableMultipleBuffer(void);
36 extern int DisableMultipleBuffer(void);
37 extern int EnableContinuousRetrieval(void);
38 extern int DisableContinuousRetrieval(void);
40 ///////////////////////////////////////////////////////////////////////////////////////////////////
42 extern unsigned int GetBufferSize(void);
43 extern int SetBufferSize(unsigned int nSize);
44 extern int ResetBuffer(void);
46 //extern spinlock_t buffer_spinlock;
48 ///////////////////////////////////////////////////////////////////////////////////////////////////
51 Functions "storage_init()" and "storage_down()" are for initialization and
52 shutdown respectively.
54 extern int storage_init (void);
55 extern void storage_down (void);
58 Function "pack_event_info()" saves information about event into buffer. It
59 is used in 'probes' to pack and save event data.
61 extern void pack_event_info (probe_id_t probe_id, record_type_t record_type, const char *fmt, ...);
64 Function "set_us_proc_inst()" saves instrumentation info for user space process.
66 extern int set_us_proc_inst_info (ioctl_inst_usr_space_proc_t * inst_info);
68 /* Set most links from us_proc_info to data in the bundle */
71 /* Undo the actions of link_bundle() */
75 Function "release_us_proc_inst_info()" destroys instrumentation info for user space process.
77 extern void release_us_proc_inst_info (void);
80 Adds non-predefined kernel probe to the list.
82 extern int add_probe_to_list (unsigned long addr, kernel_probe_t ** pprobe);
85 Removes non-predefined kernel probe from the list.
87 extern int remove_probe_from_list (unsigned long addr);
90 Searches non-predefined kernel probe in the list.
92 extern kernel_probe_t *find_probe (unsigned long addr);
95 Copies event from user space to buffer and updates its pid/tid/cpu/time.
97 extern int put_us_event (char *data, unsigned long len);
102 extern int set_event_mask (int new_mask);
107 extern int get_event_mask (int *mask);
110 Sets predefined user space probes info.
112 extern int set_predef_uprobes (ioctl_predef_uprobes_info_t *data);
114 Gets predefined user space probes info length.
116 extern int get_predef_uprobes_size(int *size);
118 Gets predefined user space probes info.
120 extern int get_predef_uprobes(ioctl_predef_uprobes_info_t *data);
123 // internal bookkeeping of storage
124 extern char *p_buffer;
126 // list of selected non-predefined kernel probes
127 extern struct hlist_head kernel_probes;
130 extern int event_mask;
136 struct jprobe jprobe;
137 struct kretprobe retprobe;
138 unsigned long offset;
144 struct jprobe jprobe;
146 struct list_head list;
154 signed char reg; // -1 - memory, 0..127 - register number
156 struct list_head list;
157 } us_proc_vtp_data_t;
159 typedef struct dentry *STRUCT_DENTRY_PTR;
164 STRUCT_DENTRY_PTR m_f_dentry;
168 us_proc_vtp_t *p_vtps;
175 STRUCT_DENTRY_PTR m_f_dentry;
177 unsigned unres_ips_count;
178 unsigned unres_vtps_count;
179 //kprobe_opcode_t *mapped_codelets;
181 us_proc_lib_t *p_libs;
185 /* cond data itself */
186 struct event_tmpl tmpl;
188 struct list_head list;
189 /* has been applied (for start and stop conditions) */
193 extern struct cond cond_list;
195 /* macros for testing flags */
196 #define ET_FIELD_CLR(flags, field) (flags &= ~field)
197 #define ET_FIELD_SET(flags, field) (flags |= field)
198 #define ET_FIELD_ISSET(flags, field) ((flags & field) != 0)
200 extern inst_us_proc_t us_proc_info;
203 #endif /* !defined(__STORAGE_H__) */