feat: 支持进程挂载目录和进程命名空间增强

BREAKING CHANGE:
支持进程挂载目录和进程命名空间增强对外变更:
1.支持进程挂载目录，在/proc下可以看到进程挂载目录
2.支持pid容器和uts容器信息查询

Close #I6AEVV
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I6777889552d77e49da81249063f9f3db0af96f34

fs/proc/Kconfig

@@ -4,3 +4,8 @@ config FS_PROC
     depends on FS_VFS
     help
       Answer Y to enable LiteOS support proc filesystem.
+
+config PROC_PROCESS_DIR
+    bool "Enable Process mount directory"
+    default n
+    depends on FS_PROC

fs/proc/include/internal.h

 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2023 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -45,6 +45,12 @@ extern "C" {
 extern spinlock_t procfsLock;
 extern bool procfsInit;
 
+#ifdef LOSCFG_PROC_PROCESS_DIR
+int ProcCreateProcessDir(UINT32 pid, uintptr_t process);
+
+void ProcFreeProcessDir(struct ProcDirEntry *processDir);
+#endif
+
 void ProcPmInit(void);
 
 void ProcVmmInit(void);

fs/proc/include/proc_fs.h

 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2023 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -82,6 +82,7 @@ typedef unsigned short fmode_t;
 #define FMODE_READ        ((fmode_t)0x1)
 
 struct ProcFile;
+struct ProcDirEntry;
 
 struct ProcFileOperations {
     char *name;
@@ -89,6 +90,7 @@ struct ProcFileOperations {
     int (*open)(struct Vnode *vnode, struct ProcFile *pf);
     int (*release)(struct Vnode *vnode, struct ProcFile *pf);
     int (*read)(struct SeqBuf *m, void *v);
+    ssize_t (*readLink)(struct ProcDirEntry *pde, char *buf, size_t bufLen);
 };
 
 struct ProcDirEntry {
@@ -244,6 +246,35 @@ extern struct ProcDirEntry *ProcMkdir(const char *name, struct ProcDirEntry *par
 extern struct ProcDirEntry *ProcCreate(const char *name, mode_t mode,
     struct ProcDirEntry *parent, const struct ProcFileOperations *procFops);
 
+/**
+ * @ingroup  procfs
+ * @brief create a proc node
+ *
+ * @par Description:
+ * This API is used to create the node by 'name' and parent vnode,
+ * And assignment operation function
+ *
+ * @attention
+ * <ul>
+ * <li>This interface should be called after system initialization.</li>
+ * <li>The parameter name should be a valid string.</li>
+ * </ul>
+ *
+ * @param  name      [IN] Type #const char * The name of the node to be created.
+ * @param  mode      [IN] Type #mode_t the mode of create's node.
+ * @param  parent    [IN] Type #struct ProcDirEntry * the parent node of the node to be created.
+ * @param  procFops  [IN] Type #const struct ProcFileOperations * operation function of the node.
+ * @param  data      [IN] Type #void * data of the node.
+ *
+ * @retval #NULL               Create failed.
+ * @retval #ProcDirEntry*    Create successfully.
+ * @par Dependency:
+ * <ul><li>proc_fs.h: the header file that contains the API declaration.</li></ul>
+ * @see
+ *
+ */
+extern struct ProcDirEntry *ProcCreateData(const char *name, mode_t mode, struct ProcDirEntry *parent,
+                                           const struct ProcFileOperations *procFileOps, void *data);
 /**
  * @ingroup  procfs
  * @brief init proc fs

fs/proc/os_adapt/proc_vfs.c

 /*
- * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2021-2023 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -278,8 +278,10 @@ int VfsProcfsOpendir(struct Vnode *node,  struct fs_dirent_s *dir)
         return -EINVAL;
     }
     pde->pdirCurrent = pde->subdir;
+    if (pde->pf == NULL) {
+        return -EINVAL;
+    }
     pde->pf->fPos = 0;
-
     return LOS_OK;
 }
 
@@ -335,6 +337,20 @@ int VfsProcfsClosedir(struct Vnode *vp, struct fs_dirent_s *dir)
     return LOS_OK;
 }
 
+ssize_t VfsProcfsReadlink(struct Vnode *vnode, char *buffer, size_t bufLen)
+{
+    int result = -EINVAL;
+    if (vnode == NULL) {
+        return result;
+    }
+
+    struct ProcDirEntry *pde = VnodeToEntry(vnode);
+    if ((pde->procFileOps != NULL) && (pde->procFileOps->readLink != NULL)) {
+        result = pde->procFileOps->readLink(pde, buffer, bufLen);
+    }
+    return result;
+}
+
 const struct MountOps procfs_operations = {
     .Mount = VfsProcfsMount,
     .Unmount = NULL,
@@ -347,7 +363,8 @@ static struct VnodeOps g_procfsVops = {
     .Readdir = VfsProcfsReaddir,
     .Opendir = VfsProcfsOpendir,
     .Closedir = VfsProcfsClosedir,
-    .Truncate = VfsProcfsTruncate
+    .Truncate = VfsProcfsTruncate,
+    .Readlink = VfsProcfsReadlink,
 };
 
 static struct file_operations_vfs g_procfsFops = {

fs/proc/os_adapt/process_proc.c

 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2023 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -32,8 +32,186 @@
 #include <sys/statfs.h>
 #include <sys/mount.h>
 #include "proc_fs.h"
+#include "internal.h"
 #include "los_process_pri.h"
 
+#ifdef LOSCFG_PROC_PROCESS_DIR
+typedef enum {
+    PROC_PID,
+} ProcessDataType;
+
+struct ProcProcess {
+    char         *name;
+    mode_t       mode;
+    int          type;
+    const struct ProcFileOperations *fileOps;
+};
+
+struct ProcessData {
+    uintptr_t process;
+    unsigned int type;
+};
+
+#define PROC_PID_PRIVILEGE 7
+#define PROC_PID_DIR_LEN 100
+#ifdef LOSCFG_KERNEL_CONTAINER
+static ssize_t ProcessContainerLink(unsigned int containerID, ContainerType type, char *buffer, size_t bufLen)
+{
+    ssize_t count = -1;
+    if (type == PID_CONTAINER) {
+        count = snprintf_s(buffer, bufLen, bufLen - 1, "'pid:[%u]'", containerID);
+    } else if (type == UTS_CONTAINER) {
+        count = snprintf_s(buffer, bufLen, bufLen - 1, "'uts:[%u]'", containerID);
+    }
+
+    if (count < 0) {
+        return -EBADF;
+    }
+    return count;
+}
+
+static ssize_t ProcessContainerReadLink(struct ProcDirEntry *entry, char *buffer, size_t bufLen)
+{
+    ssize_t count;
+    unsigned int intSave;
+    if (entry == NULL) {
+        return -EINVAL;
+    }
+    struct ProcessData *data = (struct ProcessData *)entry->data;
+    if (data == NULL) {
+        return -EINVAL;
+    }
+    LosProcessCB *processCB = (LosProcessCB *)data->process;
+    SCHEDULER_LOCK(intSave);
+    UINT32 containerID = OsGetContainerID(processCB->container, (ContainerType)data->type);
+    SCHEDULER_UNLOCK(intSave);
+    if (containerID != OS_INVALID_VALUE) {
+        return ProcessContainerLink(containerID, (ContainerType)data->type, buffer, bufLen);
+    }
+    count = strlen("(unknown)");
+    if (memcpy_s(buffer, bufLen, "(unknown)", count + 1) != EOK) {
+        return -EBADF;
+    }
+    return count;
+}
+
+static const struct ProcFileOperations PID_CONTAINER_FOPS = {
+    .readLink = ProcessContainerReadLink,
+};
+#endif /* LOSCFG_KERNEL_CONTAINER */
+
+static int ProcProcessRead(struct SeqBuf *m, void *v)
+{
+    (void)m;
+    (void)v;
+    return -EINVAL;
+}
+
+static const struct ProcFileOperations PID_FOPS = {
+    .read = ProcProcessRead,
+};
+
+static struct ProcProcess g_procProcess[] = {
+    {
+        .name = NULL,
+        .mode = S_IFDIR | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH,
+        .type = PROC_PID,
+        .fileOps = &PID_FOPS
+
+    },
+#ifdef LOSCFG_KERNEL_CONTAINER
+    {
+        .name = "container",
+        .mode = S_IFDIR | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH,
+        .type = CONTAINER,
+        .fileOps = &PID_CONTAINER_FOPS
+
+    },
+#ifdef LOSCFG_PID_CONTAINER
+    {
+        .name = "container/pid",
+        .mode = S_IFLNK,
+        .type = PID_CONTAINER,
+        .fileOps = &PID_CONTAINER_FOPS
+    },
+#endif
+#ifdef LOSCFG_UTS_CONTAINER
+    {
+        .name = "container/uts",
+        .mode = S_IFLNK,
+        .type = UTS_CONTAINER,
+        .fileOps = &PID_CONTAINER_FOPS
+    },
+#endif
+#endif
+};
+
+void ProcFreeProcessDir(struct ProcDirEntry *processDir)
+{
+    if (processDir == NULL) {
+        return;
+    }
+    RemoveProcEntry(processDir->name, NULL);
+}
+
+static struct ProcDirEntry *ProcCreatePorcess(UINT32 pid, struct ProcProcess *porcess, uintptr_t processCB)
+{
+    int ret;
+    char pidName[PROC_PID_DIR_LEN] = {0};
+    struct ProcessData *data = (struct ProcessData *)malloc(sizeof(struct ProcessData));
+    if (data == NULL) {
+        return NULL;
+    }
+    if (porcess->name != NULL) {
+        ret = snprintf_s(pidName, PROC_PID_DIR_LEN, PROC_PID_DIR_LEN - 1, "%u/%s", pid, porcess->name);
+    } else {
+        ret = snprintf_s(pidName, PROC_PID_DIR_LEN, PROC_PID_DIR_LEN - 1, "%u", pid);
+    }
+    if (ret < 0) {
+        free(data);
+        return NULL;
+    }
+
+    data->process = processCB;
+    data->type = porcess->type;
+    struct ProcDirEntry *container = ProcCreateData(pidName, porcess->mode, NULL, porcess->fileOps, (void *)data);
+    if (container == NULL) {
+        free(data);
+        PRINT_ERR("create /proc/%s error!\n", pidName);
+        return NULL;
+    }
+    return container;
+}
+
+int ProcCreateProcessDir(UINT32 pid, uintptr_t process)
+{
+    unsigned int intSave;
+    struct ProcDirEntry *pidDir = NULL;
+    for (int index = 0; index < (sizeof(g_procProcess) / sizeof(struct ProcProcess)); index++) {
+        struct ProcProcess *procProcess = &g_procProcess[index];
+        struct ProcDirEntry *dir = ProcCreatePorcess(pid, procProcess, process);
+        if (dir == NULL) {
+            PRINT_ERR("create /proc/%s error!\n", procProcess->name);
+            goto CREATE_ERROR;
+        }
+        if (index == 0) {
+            pidDir = dir;
+        }
+    }
+
+    SCHEDULER_LOCK(intSave);
+    ((LosProcessCB *)process)->procDir = pidDir;
+    SCHEDULER_UNLOCK(intSave);
+    return 0;
+
+CREATE_ERROR:
+    if (pidDir != NULL) {
+        RemoveProcEntry(pidDir->name, NULL);
+    }
+    return -1;
+}
+#endif /* LOSCFG_PROC_PROCESS_DIR */
+
 static int ProcessProcFill(struct SeqBuf *m, void *v)
 {
     (void)v;
@@ -52,7 +230,13 @@ void ProcProcessInit(void)
         PRINT_ERR("create /proc/process error!\n");
         return;
     }
-
     pde->procFileOps = &PROCESS_PROC_FOPS;
-}
 
+#ifdef LOSCFG_PROC_PROCESS_DIR
+    int ret = ProcCreateProcessDir(OS_USER_ROOT_PROCESS_ID, (uintptr_t)OsGetUserInitProcess());
+    if (ret < 0) {
+        PRINT_ERR("Create proc process %d dir failed!\n", OS_USER_ROOT_PROCESS_ID);
+    }
+#endif
+    return;
+}

fs/proc/src/proc_file.c

 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2023 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -351,7 +351,11 @@ static struct ProcDirEntry *ProcCreateFile(struct ProcDirEntry *parent, const ch
     }
 
     pn->procFileOps = procFileOps;
-    pn->type = VNODE_TYPE_REG;
+    if (S_ISLNK(mode)) {
+        pn->type = VNODE_TYPE_LNK;
+    } else {
+        pn->type = VNODE_TYPE_REG;
+    }
     ret = ProcAddNode(parent, pn);
     if (ret != 0) {
         free(pn->pf);
@@ -383,6 +387,10 @@ static void FreeProcEntry(struct ProcDirEntry *entry)
         free(entry->pf);
         entry->pf = NULL;
     }
+    if (entry->data != NULL) {
+        free(entry->data);
+        entry->data = NULL;
+    }
     free(entry);
 }
 
@@ -529,7 +537,7 @@ static int ProcRead(struct ProcDirEntry *pde, char *buf, size_t len)
 
     if (sb->buf == NULL) {
         // only read once to build the storage buffer
-        if (pde->procFileOps->read(sb, NULL) != 0) {
+        if (pde->procFileOps->read(sb, pde->data) != 0) {
             return PROC_ERROR;
         }
     }

fs/vfs/operation/vfs_other.c

 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2022 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2023 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -482,7 +482,7 @@ exit_with_nomem:
     return (char *)NULL;
 }
 
-static void PrintFileInfo64(const struct stat64 *stat64Info, const char *name)
+static void PrintFileInfo64(const struct stat64 *stat64Info, const char *name, const char *linkName)
 {
     mode_t mode;
     char str[UGO_NUMS][UGO_NUMS + 1] = {0};
@@ -504,11 +504,18 @@ static void PrintFileInfo64(const struct stat64 *stat64Info, const char *name)
         dirFlag = '-';
     }
 
-    PRINTK("%c%s%s%s %-8lld u:%-5d g:%-5d %-10s\n", dirFlag,
-           str[0], str[1], str[UGO_NUMS - 1], stat64Info->st_size, stat64Info->st_uid, stat64Info->st_gid, name);
+    if (S_ISLNK(stat64Info->st_mode)) {
+        PRINTK("%c%s%s%s %-8lld u:%-5d g:%-5d %-10s -> %s\n", dirFlag,
+               str[0], str[1], str[UGO_NUMS - 1], stat64Info->st_size,
+               stat64Info->st_uid, stat64Info->st_gid, name, linkName);
+    } else {
+        PRINTK("%c%s%s%s %-8lld u:%-5d g:%-5d %-10s\n", dirFlag,
+               str[0], str[1], str[UGO_NUMS - 1], stat64Info->st_size,
+               stat64Info->st_uid, stat64Info->st_gid, name);
+    }
 }
 
-static void PrintFileInfo(const struct stat *statInfo, const char *name)
+static void PrintFileInfo(const struct stat *statInfo, const char *name, const char *linkName)
 {
     mode_t mode;
     char str[UGO_NUMS][UGO_NUMS + 1] = {0};
@@ -530,19 +537,33 @@ static void PrintFileInfo(const struct stat *statInfo, const char *name)
         dirFlag = '-';
     }
 
-    PRINTK("%c%s%s%s %-8lld u:%-5d g:%-5d %-10s\n", dirFlag,
-           str[0], str[1], str[UGO_NUMS - 1], statInfo->st_size, statInfo->st_uid, statInfo->st_gid, name);
+    if (S_ISLNK(statInfo->st_mode)) {
+        PRINTK("%c%s%s%s %-8lld u:%-5d g:%-5d %-10s -> %s\n", dirFlag,
+               str[0], str[1], str[UGO_NUMS - 1], statInfo->st_size,
+               statInfo->st_uid, statInfo->st_gid, name, linkName);
+    } else {
+        PRINTK("%c%s%s%s %-8lld u:%-5d g:%-5d %-10s\n", dirFlag,
+               str[0], str[1], str[UGO_NUMS - 1], statInfo->st_size,
+               statInfo->st_uid, statInfo->st_gid, name);
+    }
 }
 
 int LsFile(const char *path)
 {
     struct stat64 stat64Info;
     struct stat statInfo;
+    char linkName[NAME_MAX] = { 0 };
 
     if (stat64(path, &stat64Info) == 0) {
-        PrintFileInfo64(&stat64Info, path);
+        if (S_ISLNK(stat64Info.st_mode)) {
+            readlink(path, linkName, NAME_MAX);
+        }
+        PrintFileInfo64(&stat64Info, path, (const char *)linkName);
     } else if (stat(path, &statInfo) == 0) {
-        PrintFileInfo(&statInfo, path);
+        if (S_ISLNK(statInfo.st_mode)) {
+            readlink(path, linkName, NAME_MAX);
+        }
+        PrintFileInfo(&statInfo, path, (const char *)linkName);
     } else {
         return -1;
     }
@@ -554,6 +575,7 @@ int LsDir(const char *path)
 {
     struct stat statInfo = { 0 };
     struct stat64 stat64Info = { 0 };
+    char linkName[NAME_MAX] = { 0 };
     DIR *d = NULL;
     char *fullpath = NULL;
     char *fullpath_bak = NULL;
@@ -569,28 +591,34 @@ int LsDir(const char *path)
         pdirent = readdir(d);
         if (pdirent == NULL) {
             break;
-        } else {
-            if (!strcmp(pdirent->d_name, ".") || !strcmp(pdirent->d_name, "..")) {
-                continue;
-            }
-            (void)memset_s(&statInfo, sizeof(struct stat), 0, sizeof(struct stat));
-            (void)memset_s(&stat64Info, sizeof(struct stat), 0, sizeof(struct stat));
-            fullpath = ls_get_fullpath(path, pdirent);
-            if (fullpath == NULL) {
-                (void)closedir(d);
-                return -1;
-            }
+        }
+        if (!strcmp(pdirent->d_name, ".") || !strcmp(pdirent->d_name, "..")) {
+            continue;
+        }
+        (void)memset_s(&statInfo, sizeof(struct stat), 0, sizeof(struct stat));
+        (void)memset_s(&stat64Info, sizeof(struct stat), 0, sizeof(struct stat));
+        (void)memset_s(&linkName, sizeof(linkName), 0, sizeof(linkName));
+        fullpath = ls_get_fullpath(path, pdirent);
+        if (fullpath == NULL) {
+            (void)closedir(d);
+            return -1;
+        }
 
-            fullpath_bak = fullpath;
-            if (stat64(fullpath, &stat64Info) == 0) {
-                PrintFileInfo64(&stat64Info, pdirent->d_name);
-            } else if (stat(fullpath, &statInfo) == 0) {
-                PrintFileInfo(&statInfo, pdirent->d_name);
-            } else {
-                PRINTK("BAD file: %s\n", pdirent->d_name);
+        fullpath_bak = fullpath;
+        if (stat64(fullpath, &stat64Info) == 0) {
+            if (S_ISLNK(stat64Info.st_mode)) {
+                readlink(fullpath, linkName, NAME_MAX);
             }
-            free(fullpath_bak);
+            PrintFileInfo64(&stat64Info, pdirent->d_name, linkName);
+        } else if (stat(fullpath, &statInfo) == 0) {
+            if (S_ISLNK(statInfo.st_mode)) {
+                readlink(fullpath, linkName, NAME_MAX);
+            }
+            PrintFileInfo(&statInfo, pdirent->d_name, linkName);
+        } else {
+            PRINTK("BAD file: %s\n", pdirent->d_name);
         }
+        free(fullpath_bak);
     } while (1);
     (void)closedir(d);
 
@@ -729,4 +757,3 @@ mode_t SysUmask(mode_t mask)
     SCHEDULER_UNLOCK(intSave);
     return oldUmask;
 }
-

kernel/base/container/los_container.c

@@ -32,6 +32,12 @@
 #ifdef LOSCFG_KERNEL_CONTAINER
 
 STATIC Container g_rootContainer;
+STATIC Atomic g_containerCount = 0xF0000000U;
+
+UINT32 OsAllocContainerID(VOID)
+{
+    return LOS_AtomicIncRet(&g_containerCount);
+}
 
 VOID OsContainerInitSystemProcess(LosProcessCB *processCB)
 {
@@ -108,7 +114,7 @@ VOID OsContainersDestroy(LosProcessCB *processCB)
 {
    /* All processes in the container must be destroyed before the container is destroyed. */
 #ifdef LOSCFG_PID_CONTAINER
-    if (processCB->processID == 1) {
+    if (processCB->processID == OS_USER_ROOT_PROCESS_ID) {
         OsPidContainersDestroyAllProcess(processCB);
     }
 #endif
@@ -125,4 +131,21 @@ VOID OsContainersDestroy(LosProcessCB *processCB)
     }
 #endif
 }
+
+UINT32 OsGetContainerID(Container *container, ContainerType type)
+{
+    if (container == NULL) {
+        return OS_INVALID_VALUE;
+    }
+
+    switch (type) {
+        case PID_CONTAINER:
+            return OsGetPidContainerID(container->pidContainer);
+        case UTS_CONTAINER:
+            return OsGetUtsContainerID(container->utsContainer);
+        default:
+            break;
+    }
+    return OS_INVALID_VALUE;
+}
 #endif

kernel/base/container/los_pid_container.c

@@ -242,6 +242,7 @@ STATIC PidContainer *CreateNewPidContainer(PidContainer *parent)
     }
     (VOID)memset_s(newPidContainer, sizeof(PidContainer), 0, sizeof(PidContainer));
 
+    newPidContainer->containerID = OsAllocContainerID();
     LOS_ListInit(&newPidContainer->pidFreeList);
     for (index = 0; index < LOSCFG_BASE_CORE_PROCESS_LIMIT; index++) {
         ProcessVid *vpid = &newPidContainer->pidArray[index];
@@ -392,6 +393,23 @@ UINT32 OsGetVpidFromCurrContainer(const LosProcessCB *processCB)
     return OS_INVALID_VALUE;
 }
 
+UINT32 OsGetVpidFromRootContainer(const LosProcessCB *processCB)
+{
+    UINT32 vpid = processCB->processID;
+    PidContainer *pidContainer = processCB->container->pidContainer;
+    while (pidContainer != NULL) {
+        ProcessVid *vid = &pidContainer->pidArray[vpid];
+        if (pidContainer->parent != NULL) {
+            vpid = vid->vpid;
+            pidContainer = pidContainer->parent;
+            continue;
+        }
+
+        return vid->vid;
+    }
+    return OS_INVALID_VALUE;
+}
+
 UINT32 OsGetVtidFromCurrContainer(const LosTaskCB *taskCB)
 {
     UINT32 vtid = taskCB->taskID;
@@ -423,4 +441,12 @@ LosTaskCB *OsGetTCBFromVtid(UINT32 vtid)
     return (LosTaskCB *)taskVid->cb;
 }
 
+UINT32 OsGetPidContainerID(PidContainer *pidContainer)
+{
+    if (pidContainer == NULL) {
+        return OS_INVALID_VALUE;
+    }
+
+    return pidContainer->containerID;
+}
 #endif

kernel/base/container/los_uts_container.c

@@ -46,6 +46,7 @@ STATIC UINT32 CreateUtsContainer(UtsContainer **newUtsContainer)
     }
     (VOID)memset_s(utsContainer, sizeof(UtsContainer), 0, sizeof(UtsContainer));
 
+    utsContainer->containerID = OsAllocContainerID();
     LOS_AtomicSet(&utsContainer->rc, 1);
 
     SCHEDULER_LOCK(intSave);
@@ -158,4 +159,14 @@ struct utsname *OsGetCurrUtsName(VOID)
     }
     return &utsContainer->utsName;
 }
+
+UINT32 OsGetUtsContainerID(UtsContainer *utsContainer)
+{
+    if (utsContainer == NULL) {
+        return OS_INVALID_VALUE;
+    }
+
+    return utsContainer->containerID;
+}
+
 #endif

kernel/base/core/los_process.c

@@ -40,6 +40,7 @@
 #ifdef LOSCFG_FS_VFS
 #include "fs/fd_table.h"
 #include "fs/fs_operation.h"
+#include "internal.h"
 #endif
 #include "time.h"
 #include "user_copy.h"
@@ -436,6 +437,11 @@ LITE_OS_SEC_TEXT VOID OsProcessResourcesToFree(LosProcessCB *processCB)
     (VOID)LOS_MemFree(m_aucSysMem1, processCpup);
 #endif
 
+#ifdef LOSCFG_PROC_PROCESS_DIR
+    ProcFreeProcessDir(processCB->procDir);
+    processCB->procDir = NULL;
+#endif
+
 #ifdef LOSCFG_KERNEL_CONTAINER
     OsContainersDestroy(processCB);
 #endif
@@ -1905,6 +1911,13 @@ STATIC UINT32 OsCopyFile(UINT32 flags, LosProcessCB *childProcessCB, LosProcessC
     if (childProcessCB->files == NULL) {
         return LOS_ENOMEM;
     }
+#ifdef LOSCFG_PROC_PROCESS_DIR
+    INT32 ret = ProcCreateProcessDir(OsGetRootPid(childProcessCB), (UINTPTR)childProcessCB);
+    if (ret < 0) {
+        PRINT_ERR("ProcCreateProcessDir failed, pid = %u\n", childProcessCB->processID);
+        return LOS_EBADF;
+    }
+#endif
 #endif
 
     childProcessCB->consoleID = runProcessCB->consoleID;

kernel/base/include/los_container_pri.h

@@ -40,6 +40,12 @@
 #include "los_uts_container_pri.h"
 #endif
 
+typedef enum {
+    CONTAINER = 0,
+    PID_CONTAINER,
+    UTS_CONTAINER,
+} ContainerType;
+
 typedef struct Container {
     Atomic   rc;
 #ifdef LOSCFG_PID_CONTAINER
@@ -57,5 +63,9 @@ VOID OsInitRootContainer(VOID);
 UINT32 OsCopyContainers(UINTPTR flags, LosProcessCB *child, LosProcessCB *parent, UINT32 *processID);
 
 VOID OsContainersDestroy(LosProcessCB *processCB);
+
+UINT32 OsAllocContainerID(VOID);
+
+UINT32 OsGetContainerID(Container *container, ContainerType type);
 #endif
 #endif /* _LOS_CONTAINER_PRI_H */

kernel/base/include/los_pid_container_pri.h

@@ -51,6 +51,7 @@ typedef struct PidContainer {
     Atomic              rc;
     Atomic              level;
     Atomic              lock;
+    UINT32              containerID;
     struct PidContainer *parent;
     struct ProcessGroup *rootPGroup;
     LOS_DL_LIST         tidFreeList;
@@ -82,10 +83,14 @@ LosTaskCB *OsGetTCBFromVtid(UINT32 vtid);
 
 UINT32 OsGetVpidFromCurrContainer(const LosProcessCB *processCB);
 
+UINT32 OsGetVpidFromRootContainer(const LosProcessCB *processCB);
+
 UINT32 OsGetVtidFromCurrContainer(const LosTaskCB *taskCB);
 
 VOID OsFreeVtid(LosTaskCB *taskCB);
 
 UINT32 OsAllocVtid(LosTaskCB *taskCB, const LosProcessCB *processCB);
 
+UINT32 OsGetPidContainerID(PidContainer *pidContainer);
+
 #endif /* _LOS_PID_CONTAINER_PRI_H */

kernel/base/include/los_process_pri.h

@@ -133,6 +133,9 @@ typedef struct ProcessCB {
 #ifdef LOSCFG_KERNEL_CONTAINER
     struct Container     *container;
 #endif
+#ifdef LOSCFG_PROC_PROCESS_DIR
+    struct ProcDirEntry *procDir;
+#endif
 } LosProcessCB;
 
 extern LosProcessCB *g_processCBArray;
@@ -443,6 +446,15 @@ STATIC INLINE UINT32 OsGetPid(const LosProcessCB *processCB)
     return processCB->processID;
 }
 
+STATIC INLINE UINT32 OsGetRootPid(const LosProcessCB *processCB)
+{
+#ifdef LOSCFG_PID_CONTAINER
+    return OsGetVpidFromRootContainer(processCB);
+#else
+    return processCB->processID;
+#endif
+}
+
 /*
  * return immediately if no child has exited.
  */

kernel/base/include/los_uts_container_pri.h

@@ -38,10 +38,10 @@
 #ifdef LOSCFG_UTS_CONTAINER
 
 typedef struct ProcessCB LosProcessCB;
-
 typedef struct UtsContainer {
-    Atomic rc;
-    struct utsname utsName;
+    Atomic  rc;
+    UINT32  containerID;
+    struct  utsname utsName;
 } UtsContainer;
 
 UINT32 OsInitRootUtsContainer(UtsContainer **utsContainer);
@@ -52,5 +52,6 @@ VOID OsUtsContainersDestroy(LosProcessCB *curr);
 
 struct utsname *OsGetCurrUtsName(VOID);
 
+UINT32 OsGetUtsContainerID(UtsContainer *utsContainer);
 #endif
 #endif /* _LOS_UTS_CONTAINER_PRI_H */

testsuites/unittest/BUILD.gn

 # Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2023 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
@@ -135,10 +135,16 @@ group("unittest") {
       if (LOSCFG_USER_TEST_LEVEL >= TEST_LEVEL_LOW) {
         deps += [ "process/basic:liteos_a_process_basic_unittest_door" ]
         deps += [ "process/lock:liteos_a_process_lock_unittest_door" ]
+        if (LOSCFG_USER_TEST_PROCESS_FS == true) {
+          deps += [ "process/fs:liteos_a_process_fs_unittest_door" ]
+        }
       }
       if (LOSCFG_USER_TEST_LEVEL >= TEST_LEVEL_MIDDLE) {
         deps += [ "process/basic:liteos_a_process_basic_unittest" ]
         deps += [ "process/lock:liteos_a_process_lock_unittest" ]
+        if (LOSCFG_USER_TEST_PROCESS_FS == true) {
+          deps += [ "process/fs:liteos_a_process_fs_unittest" ]
+        }
       }
     }
 

testsuites/unittest/config.gni

@@ -126,6 +126,11 @@ LOSCFG_USER_TEST_SECURITY_CAPABILITY = true
 LOSCFG_USER_TEST_SECURITY_REUGID = true
 LOSCFG_USER_TEST_SECURITY_VID = true
 
+LOSCFG_USER_TEST_PROCESS_FS = false
+if (defined(LOSCFG_PROC_PROCESS_DIR)) {
+  LOSCFG_USER_TEST_PROCESS_FS = true
+}
+
 ########## container test ##########
 LOSCFG_USER_TEST_CONTAINER = false
 LOSCFG_USER_TEST_PID_CONTAINER = false

testsuites/unittest/process/fs/BUILD.gn

+# Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import("//build/lite/config/test.gni")
+import("//kernel/liteos_a/testsuites/unittest/config.gni")
+import("./config.gni")
+
+if (LOSCFG_USER_TEST_LEVEL >= TEST_LEVEL_LOW) {
+  unittest("liteos_a_process_fs_unittest_door") {
+    output_extension = "bin"
+    output_dir = "$root_out_dir/test/unittest/kernel"
+    include_dirs = common_include_dirs
+    sources = sources_entry
+    sources += sources_smoke
+    sources_full = []
+    sources += sources_full
+    configs = [ "../..:public_config_for_door" ]
+    deps = [ "//third_party/bounds_checking_function:libsec_shared" ]
+  }
+}
+
+if (LOSCFG_USER_TEST_LEVEL >= TEST_LEVEL_MIDDLE) {
+  unittest("liteos_a_process_fs_unittest") {
+    output_extension = "bin"
+    output_dir = "$root_out_dir/test/unittest/kernel"
+    include_dirs = common_include_dirs
+    sources = sources_entry
+    sources += sources_smoke
+    sources += sources_full
+    configs = [ "../..:public_config_for_all" ]
+    deps = [ "//third_party/bounds_checking_function:libsec_shared" ]
+  }
+}

testsuites/unittest/process/fs/It_process_fs_test.h

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _IT_PROCESS_FS_TEST_H
+#define _IT_PROCESS_FS_TEST_H
+
+#include <sys/time.h>
+#include <sys/types.h>
+#include "osTest.h"
+
+extern VOID PrintTest(const CHAR *fmt, ...);
+
+extern std::string GenProcPidPath(int pid);
+extern std::string GenProcPidContainerPath(int pid, char *name);
+
+extern void ItProcessFs001(void);
+extern void ItProcessFs002(void);
+extern void ItProcessFs003(void);
+extern void ItProcessFs004(void);
+extern void ItProcessFs005(void);
+extern void ItProcessFs006(void);
+extern void ItProcessFs007(void);
+extern void ItProcessFs008(void);
+extern void ItProcessFs009(void);
+extern void ItProcessFs010(void);
+extern void ItProcessFs011(void);
+extern void ItProcessFs012(void);
+extern void ItProcessFs013(void);
+extern void ItProcessFs014(void);
+extern void ItProcessFs015(void);
+#endif

testsuites/unittest/process/fs/config.gni

+# Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import("//build/lite/config/test.gni")
+import("//kernel/liteos_a/testsuites/unittest/config.gni")
+
+common_include_dirs = [
+  "//third_party/googletest/googletest/include",
+  "../../common/include",
+]
+
+sources_entry = [ "../../common/osTest.cpp" ]
+
+sources_smoke = []
+
+sources_full = []
+
+process_fs_include_dirs = [ "$TEST_UNITTEST_DIR/process/fs" ]
+
+process_fs_sources_entry =
+    [ "$TEST_UNITTEST_DIR/process/fs/process_fs_test.cpp" ]
+
+process_fs_sources_smoke = [
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_001.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_002.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_003.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_004.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_005.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_006.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_007.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_008.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_009.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_010.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_011.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_012.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_013.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_014.cpp",
+  "$TEST_UNITTEST_DIR/process/fs/smoke/It_process_fs_015.cpp",
+]
+
+process_fs_sources_full = []
+
+# fs module
+if (LOSCFG_USER_TEST_PROCESS_FS == true) {
+  common_include_dirs += process_fs_include_dirs
+  sources_entry += process_fs_sources_entry
+  sources_smoke += process_fs_sources_smoke
+  sources_full += process_fs_sources_full
+}

testsuites/unittest/process/fs/process_fs_test.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <cstdio>
+#include <climits>
+#include <gtest/gtest.h>
+#include "It_process_fs_test.h"
+
+VOID PrintTest(const CHAR *fmt, ...)
+{
+#ifdef PRINT_TEST
+    va_list ap;
+    if (g_osLkHook != NULL) {
+        va_start(ap, fmt);
+        printf(fmt, ap);
+        va_end(ap);
+    }
+#endif
+}
+
+std::string GenProcPidPath(int pid)
+{
+    std::ostringstream buf;
+    buf << "/proc/" << pid;
+    return buf.str();
+}
+
+std::string GenProcPidContainerPath(int pid, char *name)
+{
+    std::ostringstream buf;
+    buf << "/proc/" << pid << "/container/" << name;
+    return buf.str();
+}
+
+
+using namespace testing::ext;
+namespace OHOS {
+class ProcessFsTest : public testing::Test {
+public:
+    static void SetUpTestCase(void) {}
+    static void TearDownTestCase(void) {}
+};
+
+#if defined(LOSCFG_USER_TEST_SMOKE)
+/**
+* @tc.name: Process_fs_Test_001
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs001, TestSize.Level0)
+{
+    ItProcessFs001();
+}
+
+/**
+* @tc.name: Process_fs_Test_007
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs007, TestSize.Level0)
+{
+    ItProcessFs007();
+}
+
+/**
+* @tc.name: Process_fs_Test_010
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs010, TestSize.Level0)
+{
+    ItProcessFs010();
+}
+
+/**
+* @tc.name: Process_fs_Test_012
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs012, TestSize.Level0)
+{
+    ItProcessFs012();
+}
+
+/**
+* @tc.name: Process_fs_Test_013
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs013, TestSize.Level0)
+{
+    ItProcessFs013();
+}
+
+/**
+* @tc.name: Process_fs_Test_014
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs014, TestSize.Level0)
+{
+    ItProcessFs014();
+}
+
+/**
+* @tc.name: Process_fs_Test_015
+* @tc.desc: Process mount directory test
+* @tc.type: FUNC
+* @tc.require: issueI6AEVV
+* @tc.author:
+*/
+HWTEST_F(ProcessFsTest, ItProcessFs015, TestSize.Level0)
+{
+    ItProcessFs015();
+}
+#endif
+}

testsuites/unittest/process/fs/smoke/It_process_fs_001.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <cstdio>
+#include <climits>
+#include <gtest/gtest.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include "It_process_fs_test.h"
+
+void ItProcessFs001(void)
+{
+    auto path = GenProcPidPath(getpid());
+    DIR *dirp = opendir(path.data());
+    ASSERT_NE(dirp, nullptr);
+
+    (void)closedir(dirp);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_002.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+using namespace std;
+
+void ItProcessFs002(void)
+{
+    const int LEN_BUFF = 512;
+    char szStatBuf[LEN_BUFF];
+    FILE *fp = fopen("/proc/meminfo", "rb");
+    ASSERT_NE(fp, nullptr);
+
+    int ret = fread(szStatBuf, 1, LEN_BUFF, fp);
+    PrintTest("cat /proc/meminfo\n");
+    PrintTest("%s\n", szStatBuf);
+    ASSERT_EQ(ret, strlen(szStatBuf));
+
+    char *res = strstr(szStatBuf, "UsedSize");
+    ASSERT_NE(res, nullptr);
+
+    (void)fclose(fp);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_003.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+using namespace std;
+
+void ItProcessFs003(void)
+{
+    const int LEN_STAT = 512;
+    char szStatBuf[LEN_STAT];
+    FILE *fp = fopen("/proc/filesystems", "r");
+    ASSERT_NE(fp, nullptr);
+
+    (void)memset_s(szStatBuf, LEN_STAT, 0, LEN_STAT);
+    int readLen = fread(szStatBuf, 1, LEN_STAT, fp);
+
+    PrintTest("cat /proc/filesystems\n");
+    PrintTest("%s\n", szStatBuf);
+    ASSERT_EQ(readLen, strlen(szStatBuf));
+
+    char *res = strstr(szStatBuf, "procfs");
+    ASSERT_NE(res, nullptr);
+
+    (void)fclose(fp);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_004.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static std::string gen_proc_pid_meminfo_path(int pid)
+{
+    std::ostringstream buf;
+    buf << "/proc/" << pid << "/meminfo";
+    return buf.str();
+}
+
+static void operPidMemInfo(std::string strFile)
+{
+    const int FILE_LEN = 1024;
+    char szStatBuf[FILE_LEN];
+    FILE *fp = fopen(strFile.c_str(), "rb");
+    ASSERT_NE(fp, nullptr);
+
+    (void)memset_s(szStatBuf, FILE_LEN, 0, FILE_LEN);
+    int ret = fread(szStatBuf, 1, FILE_LEN, fp);
+    PrintTest("cat %s\n", strFile.c_str());
+    PrintTest("%s\n", szStatBuf);
+    ASSERT_EQ(ret, strlen(szStatBuf));
+
+    char *res = strstr(szStatBuf, "VMSpaceSize");
+    ASSERT_NE(res, nullptr);
+
+    (void)fclose(fp);
+}
+
+void ItProcessFs004(void)
+{
+    auto path = gen_proc_pid_meminfo_path(getpid());
+    operPidMemInfo(path);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_005.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static std::string gen_proc_pid_cpup_path(int pid)
+{
+    std::ostringstream buf;
+    buf << "/proc/" << pid << "/cpup";
+    return buf.str();
+}
+
+static void operPidCpup(std::string strFile)
+{
+    const int PUP_LEN = 1024;
+    char szStatBuf[PUP_LEN];
+    FILE *fp = fopen(strFile.c_str(), "rb");
+    ASSERT_NE(fp, nullptr);
+
+    (void)memset_s(szStatBuf, PUP_LEN, 0, PUP_LEN);
+    int ret = fread(szStatBuf, 1, PUP_LEN, fp);
+    PrintTest("cat %s\n", strFile.c_str());
+
+    PrintTest("%s\n", szStatBuf);
+    ASSERT_EQ(ret, strlen(szStatBuf));
+
+    char *res = strstr(szStatBuf, "TotalRunningTime");
+    ASSERT_NE(res, nullptr);
+
+    (void)fclose(fp);
+}
+
+void ItProcessFs005(void)
+{
+    auto path = gen_proc_pid_cpup_path(getpid());
+    operPidCpup(path);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_006.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static int const maxContainerNum = 5;
+static int const configLen       = 16;
+static int nInitArry[maxContainerNum] = {61, 54, 49, 44, 41};
+
+static std::string arryEntries[maxContainerNum] = {
+    "max_mnt_container",
+    "max_pid_container",
+    "max_user_container",
+    "max_net_container",
+    "max_uts_container"
+};
+
+static void WriteContainer(const char *filepath, int value)
+{
+    PrintTest("writeproc %d >> %s\n", value, filepath);
+    int fd = open(filepath, O_WRONLY);
+    ASSERT_EQ(fd, -1);
+    char buf[configLen];
+    size_t twd = sprintf_s(buf, configLen, "%d", value);
+    ASSERT_GT(twd, 0);
+    twd = write(fd, buf, (strlen(buf)+1));
+    ASSERT_EQ(twd, -1);
+    (void)close(fd);
+}
+
+static void ReadContainer(std::string strFile, int value)
+{
+    char szStatBuf[configLen];
+    FILE *fp = fopen(strFile.c_str(), "rb");
+    ASSERT_NE(fp, nullptr);
+
+    int ret;
+    (void)memset_s(szStatBuf, configLen, 0, configLen);
+    ret = fread(szStatBuf, 1, configLen, fp);
+    ASSERT_NE(ret, 0);
+    PrintTest("cat %s\n", strFile.c_str());
+
+    PrintTest("%s\n", szStatBuf);
+    ret = atoi(szStatBuf);
+    ASSERT_EQ(ret, value);
+
+    (void)fclose(fp);
+}
+
+static void ErrWriteContainer0(const char *filepath)
+{
+    int fd = open(filepath, O_WRONLY);
+    ASSERT_EQ(fd, -1);
+    char buf[configLen];
+    int invalidNum = 0;
+    size_t twd1 = sprintf_s(buf, configLen, "%d", invalidNum);
+    ASSERT_GT(twd1, 0);
+    PrintTest("writeproc %d >> %s\n", invalidNum, filepath);
+    twd1 = write(fd, buf, (strlen(buf)+1));
+    (void)close(fd);
+    ASSERT_EQ(twd1, -1);
+}
+
+static void ErrWriteContainer65(const char *filepath)
+{
+    int fd = open(filepath, O_WRONLY);
+    ASSERT_EQ(fd, -1);
+    char buf[configLen];
+    int invalidNum = 65;
+    size_t twd2 = sprintf_s(buf, configLen, "%d", invalidNum);
+    ASSERT_GT(twd2, 0);
+    PrintTest("writeproc %d >> %s\n", invalidNum, filepath);
+    twd2 = write(fd, buf, (strlen(buf)+1));
+    (void)close(fd);
+    ASSERT_EQ(twd2, -1);
+}
+
+void ItProcessFs006(void)
+{
+    const int CONFIG_FILE_LEN = 1024;
+    char szFile[CONFIG_FILE_LEN] = {0};
+    for (int i = 0; i < maxContainerNum; i++) {
+        size_t count = sprintf_s(szFile, CONFIG_FILE_LEN, "/proc/sys/user/%s", arryEntries[i].c_str());
+        ASSERT_GT(count, 0);
+        WriteContainer(szFile, nInitArry[i]);
+        ReadContainer(szFile, nInitArry[i]);
+    }
+
+    for (int i = 0; i < maxContainerNum; i++) {
+        size_t count = sprintf_s(szFile, CONFIG_FILE_LEN, "/proc/sys/user/%s", arryEntries[i].c_str());
+        ASSERT_GT(count, 0);
+        ErrWriteContainer0(szFile);
+
+        ErrWriteContainer65(szFile);
+    }
+}

testsuites/unittest/process/fs/smoke/It_process_fs_007.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sched.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <climits>
+#include <string>
+#include <iostream>
+#include <regex>
+#include "It_process_fs_test.h"
+
+void ItProcessFs007(void)
+{
+    auto path = GenProcPidContainerPath(getpid(), "uts");
+    std::vector<char> buf(PATH_MAX);
+    auto nbytes = readlink(path.c_str(), buf.data(), PATH_MAX);
+    ASSERT_NE(nbytes, -1);
+
+    std::regex reg("'uts:\\[[0-9]+\\]'");
+    bool ret = std::regex_match(buf.data(), reg);
+    ASSERT_EQ(ret, true);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_008.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sched.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <climits>
+#include <string>
+#include <iostream>
+#include <regex>
+#include "It_process_fs_test.h"
+
+void ItProcessFs008(void)
+{
+    auto path = GenProcPidContainerPath(getpid(), "mnt");
+    std::vector<char> buf(PATH_MAX);
+    auto nbytes = readlink(path.c_str(), buf.data(), PATH_MAX);
+    ASSERT_NE(nbytes, -1);
+
+    std::regex reg("'mnt:\\[[0-9]+\\]'");
+    bool ret = std::regex_match(buf.data(), reg);
+    ASSERT_EQ(ret, true);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_009.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sched.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <climits>
+#include <string>
+#include <iostream>
+#include <regex>
+#include "It_process_fs_test.h"
+
+void ItProcessFs009(void)
+{
+    auto path = GenProcPidContainerPath(getpid(), "user");
+    std::vector<char> buf(PATH_MAX);
+    auto nbytes = readlink(path.c_str(), buf.data(), PATH_MAX);
+    ASSERT_NE(nbytes, -1);
+
+    std::regex reg("'user:\\[[0-9]+\\]'");
+    bool ret = std::regex_match(buf.data(), reg);
+    ASSERT_EQ(ret, true);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_010.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sched.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <climits>
+#include <string>
+#include <iostream>
+#include <regex>
+#include "It_process_fs_test.h"
+
+void ItProcessFs010(void)
+{
+    auto path = GenProcPidContainerPath(getpid(), "pid");
+    std::vector<char> buf(PATH_MAX);
+    auto nbytes = readlink(path.c_str(), buf.data(), PATH_MAX);
+    ASSERT_NE(nbytes, -1);
+
+    std::regex reg("'pid:\\[[0-9]+\\]'");
+    bool ret = std::regex_match(buf.data(), reg);
+    ASSERT_EQ(ret, true);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_011.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sched.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <climits>
+#include <string>
+#include <iostream>
+#include <regex>
+#include "It_process_fs_test.h"
+
+void ItProcessFs011(void)
+{
+    auto path = GenProcPidContainerPath(getpid(), "net");
+    std::vector<char> buf(PATH_MAX);
+    auto nbytes = readlink(path.c_str(), buf.data(), PATH_MAX);
+    ASSERT_NE(nbytes, -1);
+
+    std::regex reg("'net:\\[[0-9]+\\]'");
+    bool ret = std::regex_match(buf.data(), reg);
+    ASSERT_EQ(ret, true);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_012.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <cstdio>
+#include <climits>
+#include <gtest/gtest.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+#include "It_process_fs_test.h"
+
+static const int STACK_SIZE = 1024 * 1024;
+static const int CHILD_FUNC_ARG = 0x2088;
+
+static int child_process(void *arg)
+{
+    (void)arg;
+    pid_t pid = getpid();
+    std::ostringstream buf;
+    buf << "/proc/" << pid;
+    DIR *dirp = opendir(buf.str().data());
+    if (dirp == nullptr) {
+        return 1;
+    }
+
+    (void)closedir(dirp);
+    return 0;
+}
+
+void ItProcessFs012(void)
+{
+    int ret = 0;
+    int status;
+    char *stack = (char *)mmap(nullptr, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK,
+                               -1, 0);
+    ASSERT_NE(stack, nullptr);
+    char *stackTop = stack + STACK_SIZE;
+    int arg = CHILD_FUNC_ARG;
+    pid_t pid = clone(child_process, stackTop, SIGCHLD, &arg);
+    ASSERT_NE(pid, -1);
+
+    ret = waitpid(pid, &status, 0);
+    ASSERT_EQ(ret, pid);
+
+    ret = WIFEXITED(status);
+    int exitCode = WEXITSTATUS(status);
+    ASSERT_EQ(exitCode, 0);
+
+    std::ostringstream buf;
+    buf << "/proc/" << pid;
+    DIR *dirp = opendir(buf.str().data());
+    ASSERT_EQ(dirp, nullptr);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_013.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <gtest/gtest.h>
+#include "It_process_fs_test.h"
+
+static const int ini_process_max = 3;
+
+void ItProcessFs013(void)
+{
+    std::string path;
+    DIR *dirp = nullptr;
+    for (int i = 1; i <= ini_process_max; i++) {
+        if (i != 2) { /* 2: skip kernel process */
+            path = GenProcPidPath(i);
+            printf("path: %s\n", path.c_str());
+            dirp = opendir(path.data());
+            ASSERT_NE(dirp, nullptr);
+            (void)closedir(dirp);
+        };
+    }
+}

testsuites/unittest/process/fs/smoke/It_process_fs_014.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <gtest/gtest.h>
+#include "It_process_fs_test.h"
+
+void ItProcessFs014(void)
+{
+    std::string path = "/proc/100000";
+    DIR *dirp = nullptr;
+    dirp = opendir(path.c_str());
+    ASSERT_EQ(dirp, nullptr);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_015.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <gtest/gtest.h>
+#include "It_process_fs_test.h"
+
+void ItProcessFs015(void)
+{
+    std::string path = "/proc/power";
+    DIR *dirp = nullptr;
+    dirp = opendir(path.c_str());
+    ASSERT_NE(dirp, nullptr);
+
+    (void)closedir(dirp);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_016.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static int const configLen = 16;
+static int const invalidNum = 2;
+static const int CHILD_FUNC_ARG = 0x2088;
+const int  STACK_SIZE = (1024 * 1024);
+
+static int childFunc(void *arg)
+{
+    (void)arg;
+    sleep(2); /* 2: delay 2s */
+
+    return 0;
+}
+
+void ItProcessFs016(void)
+{
+    const int CONFIG_FILE_LEN = 1024;
+    char szFile[CONFIG_FILE_LEN] = {0};
+    std::string path = "/proc/sys/user/max_uts_container";
+    int fd = open(path.c_str(), O_WRONLY);
+    ASSERT_NE(fd, -1);
+
+    char buf[configLen];
+    (void)sprintf(buf, "%d", invalidNum);
+    size_t ret = write(fd, buf, (strlen(buf) + 1));
+    ASSERT_NE(ret, -1);
+
+    int arg = CHILD_FUNC_ARG;
+
+    char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK,
+                               -1, 0);
+    ASSERT_NE(stack, NULL);
+    char *stackTop = stack + STACK_SIZE;
+
+    auto pid = clone(childFunc, stackTop, CLONE_NEWUTS, &arg);
+    ASSERT_NE(pid, -1);
+    pid = clone(childFunc, stackTop, CLONE_NEWUTS, &arg);
+    ASSERT_NE(pid, -1);
+
+    pid = clone(childFunc, stackTop, CLONE_NEWUTS, &arg);
+    ASSERT_EQ(pid, -1);
+
+    (void)close(fd);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_017.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static int const configLen = 16;
+static int const invalidNum = 2;
+static const int CHILD_FUNC_ARG = 0x2088;
+const int  STACK_SIZE = (1024 * 1024);
+
+static int childFunc(void *arg)
+{
+    (void)arg;
+    sleep(2); /* 2: delay 2s */
+
+    return 0;
+}
+
+void ItProcessFs017(void)
+{
+    const int CONFIG_FILE_LEN = 1024;
+    char szFile[CONFIG_FILE_LEN] = {0};
+    std::string path = "/proc/sys/user/max_user_container";
+    int fd = open(path.c_str(), O_WRONLY);
+    ASSERT_NE(fd, -1);
+
+    char buf[configLen];
+    size_t ret = sprintf_s(buf, configLen, "%d", invalidNum);
+    ASSERT_GT(ret, 0);
+    ret = write(fd, buf, (strlen(buf) + 1));
+    ASSERT_NE(ret, -1);
+
+    int arg = CHILD_FUNC_ARG;
+
+    char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK,
+                               -1, 0);
+    ASSERT_NE(stack, NULL);
+    char *stackTop = stack + STACK_SIZE;
+
+    auto pid = clone(childFunc, stackTop, CLONE_NEWUSER, &arg);
+    ASSERT_NE(pid, -1);
+    pid = clone(childFunc, stackTop, CLONE_NEWUSER, &arg);
+    ASSERT_NE(pid, -1);
+
+    pid = clone(childFunc, stackTop, CLONE_NEWUSER, &arg);
+    ASSERT_EQ(pid, -1);
+
+    (void)close(fd);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_018.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static int const configLen = 16;
+static int const invalidNum = 2;
+static const int CHILD_FUNC_ARG = 0x2088;
+const int  STACK_SIZE = (1024 * 1024);
+
+static int childFunc(void *arg)
+{
+    (void)arg;
+    sleep(2); /* 2: delay 2s */
+
+    return 0;
+}
+
+void ItProcessFs018(void)
+{
+    const int CONFIG_FILE_LEN = 1024;
+    char szFile[CONFIG_FILE_LEN] = {0};
+    std::string path = "/proc/sys/user/max_mnt_container";
+    int fd = open(path.c_str(), O_WRONLY);
+    ASSERT_NE(fd, -1);
+
+    char buf[configLen];
+    size_t ret = sprintf_s(buf, configLen, "%d", invalidNum);
+    ASSERT_GT(ret, 0);
+    ret = write(fd, buf, (strlen(buf) + 1));
+    ASSERT_NE(ret, -1);
+
+    int arg = CHILD_FUNC_ARG;
+
+    char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK,
+                               -1, 0);
+    ASSERT_NE(stack, NULL);
+    char *stackTop = stack + STACK_SIZE;
+
+    auto pid = clone(childFunc, stackTop, CLONE_NEWNS, &arg);
+    ASSERT_NE(pid, -1);
+    pid = clone(childFunc, stackTop, CLONE_NEWNS, &arg);
+    ASSERT_NE(pid, -1);
+
+    pid = clone(childFunc, stackTop, CLONE_NEWNS, &arg);
+    ASSERT_EQ(pid, -1);
+
+    (void)close(fd);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_019.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static int const configLen = 16;
+static int const invalidNum = 2;
+static const int CHILD_FUNC_ARG = 0x2088;
+const int  STACK_SIZE = (1024 * 1024);
+
+static int childFunc(void *arg)
+{
+    (void)arg;
+    sleep(2); /* 2: delay 2s */
+
+    return 0;
+}
+
+void ItProcessFs019(void)
+{
+    const int CONFIG_FILE_LEN = 1024;
+    char szFile[CONFIG_FILE_LEN] = {0};
+    std::string path = "/proc/sys/user/max_pid_container";
+    int fd = open(path.c_str(), O_WRONLY);
+    ASSERT_NE(fd, -1);
+
+    char buf[configLen];
+    size_t ret = sprintf_s(buf, configLen, "%d", invalidNum);
+    ASSERT_GT(ret, 0);
+    ret = write(fd, buf, (strlen(buf) + 1));
+    ASSERT_NE(ret, -1);
+
+    int arg = CHILD_FUNC_ARG;
+
+    char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK,
+                               -1, 0);
+    ASSERT_NE(stack, NULL);
+    char *stackTop = stack + STACK_SIZE;
+
+    auto pid = clone(childFunc, stackTop, CLONE_NEWPID, &arg);
+    ASSERT_NE(pid, -1);
+    pid = clone(childFunc, stackTop, CLONE_NEWPID, &arg);
+    ASSERT_NE(pid, -1);
+
+    pid = clone(childFunc, stackTop, CLONE_NEWPID, &arg);
+    ASSERT_EQ(pid, -1);
+
+    (void)close(fd);
+}

testsuites/unittest/process/fs/smoke/It_process_fs_020.cpp

+/*
+ * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdio>
+#include "It_process_fs_test.h"
+
+static int const configLen = 16;
+static int const invalidNum = 2;
+static const int CHILD_FUNC_ARG = 0x2088;
+const int  STACK_SIZE = (1024 * 1024);
+
+static int childFunc(void *arg)
+{
+    (void)arg;
+    sleep(2); /* 2: delay 2s */
+
+    return 0;
+}
+
+void ItProcessFs020(void)
+{
+    const int CONFIG_FILE_LEN = 1024;
+    char szFile[CONFIG_FILE_LEN] = {0};
+    std::string path = "/proc/sys/user/max_net_container";
+    int fd = open(path.c_str(), O_WRONLY);
+    ASSERT_NE(fd, -1);
+
+    char buf[configLen];
+    size_t ret = sprintf(buf, configLen, "%d", invalidNum);
+    ASSERT_GT(ret, 0);
+    ret = write(fd, buf, (strlen(buf) + 1));
+    ASSERT_NE(ret, -1);
+
+    int arg = CHILD_FUNC_ARG;
+
+    char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK,
+                               -1, 0);
+    ASSERT_NE(stack, NULL);
+    char *stackTop = stack + STACK_SIZE;
+
+    auto pid = clone(childFunc, stackTop, CLONE_NEWNET, &arg);
+    ASSERT_NE(pid, -1);
+    pid = clone(childFunc, stackTop, CLONE_NEWNET, &arg);
+    ASSERT_NE(pid, -1);
+
+    pid = clone(childFunc, stackTop, CLONE_NEWNET, &arg);
+    ASSERT_EQ(pid, -1);
+
+    (void)close(fd);
+}