los_partition_utils.c 文件参考

浏览源代码.

函数
STATIC INT32	MatchPartPos (CHAR *p, const CHAR *partInfoName, INT32 *partInfo)
STATIC INT32	MatchPartInfo (CHAR *p, struct PartitionInfo *partInfo)
STATIC INT32	GetPartitionBootArgs (const CHAR *argName, CHAR **args)
INT32	GetPartitionInfo (struct PartitionInfo *partInfo)
const CHAR *	GetDevNameOfPartition (const struct PartitionInfo *partInfo)
INT32	ResetDevNameofPartition (const struct PartitionInfo *partInfo)

函数说明

GetDevNameOfPartition()

const CHAR * GetDevNameOfPartition

(

const struct PartitionInfo *

partInfo

)

在文件 los_partition_utils.c 第 199 行定义.

{
    const CHAR *devName = NULL;
 
    if (strcmp(partInfo->storageType, STORAGE_TYPE) == 0) {
#if defined(LOSCFG_STORAGE_SPINOR)
        INT32 ret = add_mtd_partition(FLASH_TYPE, partInfo->startAddr, partInfo->partSize, partInfo->partNum);
        if (ret != LOS_OK) {
            PRINT_ERR("Failed to add %s partition! error = %d\n", partInfo->partName, ret);
        } else {
            if (partInfo->devName != NULL) {
                devName = partInfo->devName;
            }
        }
#endif
    } else {
        PRINT_ERR("Failed to find %s dev type: %s\n", partInfo->partName, partInfo->storageType);
    }
 
    return devName;
}

函数调用图:

这是这个函数的调用关系图:

GetPartitionBootArgs()

STATIC INT32 GetPartitionBootArgs	(	const CHAR *	argName,
		CHAR **	args
	)

在文件 los_partition_utils.c 第 111 行定义.

{
    INT32 i;
    INT32 len = 0;
    CHAR *cmdLine = NULL;
    INT32 cmdLineLen;
    CHAR *tmp = NULL;
 
    cmdLine = (CHAR *)malloc(COMMAND_LINE_SIZE);
    if (cmdLine == NULL) {
        PRINT_ERR("Malloc cmdLine space failed!\n");
        return LOS_NOK;
    }
 
#if defined(LOSCFG_STORAGE_SPINOR)
    struct MtdDev *mtd = GetMtd(FLASH_TYPE);
    if (mtd == NULL) {
        PRINT_ERR("Get spinor mtd failed!\n");
        goto ERROUT;
    }
    cmdLineLen = mtd->read(mtd, COMMAND_LINE_ADDR, COMMAND_LINE_SIZE, cmdLine);
    if ((cmdLineLen != COMMAND_LINE_SIZE)) {
        PRINT_ERR("Read spinor command line failed!\n");
        goto ERROUT;
    }
#else
    cmdLineLen = 0;
#endif
 
    for (i = 0; i < cmdLineLen; i += len + 1) {
        len = strlen(cmdLine + i);
        tmp = strstr(cmdLine + i, argName);
        if (tmp != NULL) {
            *args = strdup(tmp + strlen(argName));
            if (*args == NULL) {
                goto ERROUT;
            }
            free(cmdLine);
            return LOS_OK;
        }
    }
 
    PRINTK("no patch partition bootargs\n");
 
ERROUT:
    free(cmdLine);
    return LOS_NOK;
}

函数调用图:

这是这个函数的调用关系图:

GetPartitionInfo()

INT32 GetPartitionInfo

(

struct PartitionInfo *

partInfo

)

在文件 los_partition_utils.c 第 160 行定义.

{
    CHAR *args    = NULL;
    CHAR *argsBak = NULL;
    CHAR *p       = NULL;
 
    if (GetPartitionBootArgs(partInfo->cmdlineArgName, &args) != LOS_OK) {
        return LOS_NOK;
    }
    argsBak = args;
 
    p = strsep(&args, " ");
    while (p != NULL) {
        if (MatchPartInfo(p, partInfo) != LOS_OK) {
            goto ERROUT;
        }
        p = strsep(&args, " ");
    }
    if ((partInfo->fsType != NULL) && (partInfo->storageType != NULL)) {
        free(argsBak);
        return LOS_OK;
    }
    PRINT_ERR("Cannot find %s type\n", partInfo->partName);
 
ERROUT:
    PRINT_ERR("Invalid %s information!\n", partInfo->partName);
    if (partInfo->storageType != NULL) {
        free(partInfo->storageType);
        partInfo->storageType = NULL;
    }
    if (partInfo->fsType != NULL) {
        free(partInfo->fsType);
        partInfo->fsType = NULL;
    }
    free(argsBak);
 
    return LOS_NOK;
}

函数调用图:

这是这个函数的调用关系图:

MatchPartInfo()

STATIC INT32 MatchPartInfo	(	CHAR *	p,
		struct PartitionInfo *	partInfo
	)

在文件 los_partition_utils.c 第 71 行定义.

{
    const CHAR *storageTypeArgName = partInfo->storageTypeArgName;
    const CHAR *fsTypeArgName      = partInfo->fsTypeArgName;
    const CHAR *addrArgName        = partInfo->addrArgName;
    const CHAR *partSizeArgName    = partInfo->partSizeArgName;
 
    if ((partInfo->storageType == NULL) && (strncmp(p, storageTypeArgName, strlen(storageTypeArgName)) == 0)) {
        partInfo->storageType = strdup(p + strlen(storageTypeArgName));
        if (partInfo->storageType == NULL) {
            return LOS_NOK;
        }
        return LOS_OK;
    }
 
    if ((partInfo->fsType == NULL) && (strncmp(p, fsTypeArgName, strlen(fsTypeArgName)) == 0)) {
        partInfo->fsType = strdup(p + strlen(fsTypeArgName));
        if (partInfo->fsType == NULL) {
            return LOS_NOK;
        }
        return LOS_OK;
    }
 
    if (partInfo->startAddr < 0) {
        if (MatchPartPos(p, addrArgName, &partInfo->startAddr) != LOS_OK) {
            return LOS_NOK;
        } else if (partInfo->startAddr >= 0) {
            return LOS_OK;
        }
    }
 
    if (partInfo->partSize < 0) {
        if (MatchPartPos(p, partSizeArgName, &partInfo->partSize) != LOS_OK) {
            return LOS_NOK;
        }
    }
 
    return LOS_OK;
}

函数调用图:

这是这个函数的调用关系图:

MatchPartPos()

STATIC INT32 MatchPartPos	(	CHAR *	p,
		const CHAR *	partInfoName,
		INT32 *	partInfo
	)

在文件 los_partition_utils.c 第 36 行定义.

{
    UINT32 offset;
    CHAR *value = NULL;
 
    if (strncmp(p, partInfoName, strlen(partInfoName)) == 0) {
        value = p + strlen(partInfoName);
        offset = strspn(value, DEC_NUMBER_STRING);
        if (strcmp(p + strlen(p) - 1, "M") == 0) {
            if ((offset < strlen(value) - 1) || (sscanf_s(value, "%d", partInfo) <= 0)) {
                goto ERROUT;
            }
            *partInfo = *partInfo * BYTES_PER_MBYTE;
        } else if (strcmp(p + strlen(p) - 1, "K") == 0) {
            if ((offset < (strlen(value) - 1)) || (sscanf_s(value, "%d", partInfo) <= 0)) {
                goto ERROUT;
            }
            *partInfo = *partInfo * BYTES_PER_KBYTE;
        } else if (sscanf_s(value, "0x%x", partInfo) > 0) {
            value += strlen("0x");
            if (strspn(value, HEX_NUMBER_STRING) < strlen(value)) {
                goto ERROUT;
            }
        } else {
            goto ERROUT;
        }
    }
 
    return LOS_OK;
 
ERROUT:
    PRINT_ERR("Invalid format: %s\n", p + strlen(partInfoName));
    return LOS_NOK;
}

这是这个函数的调用关系图:

ResetDevNameofPartition()

INT32 ResetDevNameofPartition

(

const struct PartitionInfo *

partInfo

)

在文件 los_partition_utils.c 第 221 行定义.

{
    INT32 ret;
#if defined(LOSCFG_STORAGE_SPINOR)
    ret = delete_mtd_partition(partInfo->partNum, FLASH_TYPE);
    if (ret != ENOERR) {
        int err = get_errno();
        PRINT_ERR("Failed to delete %s, errno %d: %s\n", partInfo->devName, err, strerror(err));
        ret = LOS_NOK;
    }
#else
    ret = LOS_NOK;
#endif
    return ret;
}

函数调用图:

这是这个函数的调用关系图: