1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "stdlib.h"
33 #include "stdio.h"
34 #include "ctype.h"
35 #include "los_printf.h"
36 #include "string.h"
37 #include "securec.h"
38 #ifdef LOSCFG_SHELL
39 #include "shcmd.h"
40 #include "shell.h"
41 #endif
42 #include "los_oom.h"
43 #include "los_vm_dump.h"
44 #include "los_process_pri.h"
45 #ifdef LOSCFG_FS_VFS
46 #include "path_cache.h"
47 #endif
48
49 #ifdef LOSCFG_KERNEL_VM
50
51 #define ARGC_2 2
52 #define ARGC_1 1
53 #define ARGC_0 0
54 #define VMM_CMD "vmm"
55 #define OOM_CMD "oom"
56 #define VMM_PMM_CMD "v2p"
57
OsDumpKernelAspace(VOID)58 LITE_OS_SEC_TEXT_MINOR VOID OsDumpKernelAspace(VOID)
59 {
60 LosVmSpace *kAspace = LOS_GetKVmSpace();
61 if (kAspace != NULL) {
62 OsDumpAspace(kAspace);
63 } else {
64 VM_ERR("kernel aspace is NULL");
65 }
66 return;
67 }
68
OsPid(const CHAR * str)69 LITE_OS_SEC_TEXT_MINOR INT32 OsPid(const CHAR *str)
70 {
71 UINT32 len = strlen(str);
72 if (len <= 2) { // pid range is 0~63, max pid string length is 2
73 for (UINT32 i = 0; i < len; i++) {
74 if (isdigit(str[i]) == 0) {
75 return -1;
76 }
77 }
78 return atoi(str);
79 }
80 return -1;
81 }
82
OsPrintUsage(VOID)83 LITE_OS_SEC_TEXT_MINOR VOID OsPrintUsage(VOID)
84 {
85 PRINTK("-a, print all vm address space information\n"
86 "-k, print the kernel vm address space information\n"
87 "pid(0~63), print process[pid] vm address space information\n"
88 "-h | --help, print vmm command usage\n");
89 }
90
OsDoDumpVm(pid_t pid)91 LITE_OS_SEC_TEXT_MINOR VOID OsDoDumpVm(pid_t pid)
92 {
93 LosProcessCB *processCB = NULL;
94
95 if (OsProcessIDUserCheckInvalid(pid)) {
96 PRINTK("\tThe process [%d] not valid\n", pid);
97 return;
98 }
99
100 processCB = OS_PCB_FROM_PID(pid);
101 if (!OsProcessIsUnused(processCB) && (processCB->vmSpace != NULL)) {
102 OsDumpAspace(processCB->vmSpace);
103 } else {
104 PRINTK("\tThe process [%d] not active\n", pid);
105 }
106 }
107
OsShellCmdDumpVm(INT32 argc,const CHAR * argv[])108 LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdDumpVm(INT32 argc, const CHAR *argv[])
109 {
110 if (argc == 0) {
111 OsDumpAllAspace();
112 } else if (argc == 1) {
113 pid_t pid = OsPid(argv[0]);
114 if (strcmp(argv[0], "-a") == 0) {
115 OsDumpAllAspace();
116 } else if (strcmp(argv[0], "-k") == 0) {
117 OsDumpKernelAspace();
118 } else if (pid >= 0) {
119 OsDoDumpVm(pid);
120 } else if (strcmp(argv[0], "-h") == 0 || strcmp(argv[0], "--help") == 0) {
121 OsPrintUsage();
122 } else {
123 PRINTK("%s: invalid option: %s\n", VMM_CMD, argv[0]);
124 OsPrintUsage();
125 }
126 } else {
127 OsPrintUsage();
128 }
129
130 return OS_ERROR;
131 }
132
V2PPrintUsage(VOID)133 LITE_OS_SEC_TEXT_MINOR VOID V2PPrintUsage(VOID)
134 {
135 PRINTK("pid vaddr(0x1000000~0x3e000000), print physical address of virtual address\n"
136 "-h | --help, print v2p command usage\n");
137 }
138
OsShellCmdV2P(INT32 argc,const CHAR * argv[])139 LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdV2P(INT32 argc, const CHAR *argv[])
140 {
141 UINT32 vaddr;
142 PADDR_T paddr;
143 CHAR *endPtr = NULL;
144
145 if (argc == 0) {
146 V2PPrintUsage();
147 } else if (argc == 1) {
148 if (strcmp(argv[0], "-h") == 0 || strcmp(argv[0], "--help") == 0) {
149 V2PPrintUsage();
150 }
151 } else if (argc == 2) {
152 pid_t pid = OsPid(argv[0]);
153 vaddr = strtoul((CHAR *)argv[1], &endPtr, 0);
154 if ((endPtr == NULL) || (*endPtr != 0) || !LOS_IsUserAddress(vaddr)) {
155 PRINTK("vaddr %s invalid. should be in range(0x1000000~0x3e000000) \n", argv[1]);
156 return OS_ERROR;
157 } else {
158 if (pid >= 0) {
159 if (pid < g_processMaxNum) {
160 LosProcessCB *processCB = OS_PCB_FROM_PID(pid);
161 if (!OsProcessIsUnused(processCB)) {
162 paddr = 0;
163 LOS_ArchMmuQuery(&processCB->vmSpace->archMmu, (VADDR_T)vaddr, &paddr, 0);
164 if (paddr == 0) {
165 PRINTK("vaddr %#x is not in range or mapped\n", vaddr);
166 } else {
167 PRINTK("vaddr %#x is paddr %#x\n", vaddr, paddr);
168 }
169 } else {
170 PRINTK("\tThe process [%d] not active\n", pid);
171 }
172 } else {
173 PRINTK("\tThe process [%d] not valid\n", pid);
174 }
175 } else {
176 PRINTK("%s: invalid option: %s %s\n", VMM_PMM_CMD, argv[0], argv[1]);
177 }
178 }
179 }
180
181 return LOS_OK;
182 }
183
OsShellCmdDumpPmm(VOID)184 LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdDumpPmm(VOID)
185 {
186 OsVmPhysDump();
187
188 PathCacheMemoryDump();
189 VnodeMemoryDump();
190 return OS_ERROR;
191 }
192
OomPrintUsage(VOID)193 LITE_OS_SEC_TEXT_MINOR VOID OomPrintUsage(VOID)
194 {
195 PRINTK("\t-i [interval], set oom check interval (ms)\n"
196 "\t-m [mem byte], set oom low memory threshold (Byte)\n"
197 "\t-r [mem byte], set page cache reclaim memory threshold (Byte)\n"
198 "\t-h | --help, print vmm command usage\n");
199 }
200
OsShellCmdOom(INT32 argc,const CHAR * argv[])201 LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdOom(INT32 argc, const CHAR *argv[])
202 {
203 UINT32 lowMemThreshold;
204 UINT32 reclaimMemThreshold;
205 UINT32 checkInterval;
206 CHAR *endPtr = NULL;
207
208 if (argc == ARGC_0) {
209 OomInfodump();
210 } else if (argc == ARGC_1) {
211 if (strcmp(argv[0], "-h") != 0 && strcmp(argv[0], "--help") != 0) {
212 PRINTK("%s: invalid option: %s\n", OOM_CMD, argv[0]);
213 }
214 OomPrintUsage();
215 } else if (argc == ARGC_2) {
216 if (strcmp(argv[0], "-m") == 0) {
217 lowMemThreshold = strtoul((CHAR *)argv[1], &endPtr, 0);
218 if ((endPtr == NULL) || (*endPtr != 0)) {
219 PRINTK("[oom] low mem threshold %s(byte) invalid.\n", argv[1]);
220 return OS_ERROR;
221 } else {
222 OomSetLowMemThreashold(lowMemThreshold);
223 }
224 } else if (strcmp(argv[0], "-i") == 0) {
225 checkInterval = strtoul((CHAR *)argv[1], &endPtr, 0);
226 if ((endPtr == NULL) || (*endPtr != 0)) {
227 PRINTK("[oom] check interval %s(us) invalid.\n", argv[1]);
228 return OS_ERROR;
229 } else {
230 OomSetCheckInterval(checkInterval);
231 }
232 } else if (strcmp(argv[0], "-r") == 0) {
233 reclaimMemThreshold = strtoul((CHAR *)argv[1], &endPtr, 0);
234 if ((endPtr == NULL) || (*endPtr != 0)) {
235 PRINTK("[oom] reclaim mem threshold %s(byte) invalid.\n", argv[1]);
236 return OS_ERROR;
237 } else {
238 OomSetReclaimMemThreashold(reclaimMemThreshold);
239 }
240 } else {
241 PRINTK("%s: invalid option: %s %s\n", OOM_CMD, argv[0], argv[1]);
242 OomPrintUsage();
243 }
244 } else {
245 PRINTK("%s: invalid option\n", OOM_CMD);
246 OomPrintUsage();
247 }
248
249 return OS_ERROR;
250 }
251
252 #ifdef LOSCFG_SHELL_CMD_DEBUG
253 SHELLCMD_ENTRY(oom_shellcmd, CMD_TYPE_SHOW, OOM_CMD, 2, (CmdCallBackFunc)OsShellCmdOom);
254 SHELLCMD_ENTRY(vm_shellcmd, CMD_TYPE_SHOW, VMM_CMD, 1, (CmdCallBackFunc)OsShellCmdDumpVm);
255 SHELLCMD_ENTRY(v2p_shellcmd, CMD_TYPE_SHOW, VMM_PMM_CMD, 1, (CmdCallBackFunc)OsShellCmdV2P);
256 #endif
257
258 #ifdef LOSCFG_SHELL
259 SHELLCMD_ENTRY(pmm_shellcmd, CMD_TYPE_SHOW, "pmm", 0, (CmdCallBackFunc)OsShellCmdDumpPmm);
260 #endif
261 #endif
262
263