sd卡U盘异常检测程序

嵌入式系统开发过程中，SD卡是比较常见的外设，SD卡的稳定性与整个嵌入式系统的稳定息息相关，除了相应的驱动，还应有完整的异常检测机制。

异常检测demo（包含SD卡和U盘的检测）：

#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <fcntl.h>
#include <sys/time.h>//cw_mark
#define STORAGE_UDISK 0
#if 0
#include "MenuPicCfg.h"
#include "srv_menu_arm.h"
#include "misc.h"
#endif// ASSUMING BOTH ARE DEFINED
#define ZHE_DCT360V3_nHARDCODE_DIR
#define ZHE_SUPPORT_MMC_STORAGE#ifdef ZHE_EXT_UDISK_DEV_NAME#define NUM_DISK_ID (26*10)#define DISK_ID_START 1
#else#define NUM_DISK_ID    26
#endif#define DISK_ID_START1 1
#define DISK_ID_START2 31
#define NUM_MMCDISK_ID 5// State machine
// diskStatus:
#define UDISK_UCONN_UFSCHK 0
#define UDISK_CONN_UFSCHK 1
#define UDISK_CONN_FSCHK 2#define PRINT_POLLUDISK_TRACE
#define PRINT_POLLUDISK_TRACE_DETAILS// check if /dev/sda1,sdb1 or sdc1 even exist
// or /dev/mmcblkNp1
#if 0
#ifdef ZHE_BIGVERSION2
#define SCRIPT_FILE "/opt/DCT360V2/polludisk.sh"
#else
#define SCRIPT_FILE "/opt/DCT360V3/polludisk.sh"
#endif
#endif#define DOSFSCK_NO_ERR 0
#define DOSFSCK_ERR_CORRECTED 1
#define DOSFSCK_REBOOT 2
#define DOSFSCK_ERR_UNCORRECTED 4
#define DOSFSCK_OPER_ERR 8
#define DOSFSCK_USAGE_ERR 16
#define DOSFSCK_CANCELED 32
#define DOSFSCK_LIB_ERR 128#define DOSFSCK_RST_ERR (DOSFSCK_ERR_UNCORRECTED|DOSFSCK_OPER_ERR)//cw_mark
#if 0
extern volatile int srvAppExit;
char videoWritePath[128];
#endif//cw_mark
//extern void resync_videoWritePath( char *path );volatile int uDiskNChked = 1;
int is_udisk_chked() {return (1-uDiskNChked);
}volatile int diskStatus = UDISK_UCONN_UFSCHK;
volatile int currDiskId = 0;
volatile int resetUDisk = 0;//cw_mark
#if 0
extern DCT360V2Menu *gMenuPtr;
extern MenuRuntime mrt;
extern volatile int menumode;
#endifvolatile int updateStatusPg;void reset_udisk() {resetUDisk = 1;
}#ifdef PRINT_POLLUDISK_TRACE
int udiskPrevPrtSec = -1;
#endifint is_udisk_ok_chk(int ignoreMenu) {
#ifdef PRINT_POLLUDISK_TRACEint prt=0;int sec;unsigned int currSec;struct timeval time;gettimeofday(&time,NULL);currSec = time.tv_sec;if (udiskPrevPrtSec==-1) {prt=1;} else {sec = currSec - udiskPrevPrtSec;if ( sec>10 || sec<-10 ) {prt=1;}}if (prt) {udiskPrevPrtSec = currSec;}
#endifif ( ignoreMenu ) {if (diskStatus == UDISK_CONN_FSCHK && resetUDisk==0 ) {
#ifdef PRINT_POLLUDISK_TRACEif (prt) {printf("UDisk OK wo menumode check\n");}
#endifreturn 1;} else {
#ifdef PRINT_POLLUDISK_TRACEif (prt) {printf("UDisk Err wo menumode check:diskStatus=%d,resetUDisk=%d\n",diskStatus,resetUDisk);}
#endifreturn 0;}} else {// NOTE: in menumode, the export and import operation require sync// since udisk is being written, the sync will never be finished// that's why we don't allow write in menumode
//cw_mark
#if 0if (diskStatus == UDISK_CONN_FSCHK && resetUDisk==0 && menumode==0 ) {
#endifif (diskStatus == UDISK_CONN_FSCHK && resetUDisk==0 ) {
#ifdef PRINT_POLLUDISK_TRACEif (prt) {printf("UDisk OK\n");}
#endifreturn 1;} else {
#ifdef PRINT_POLLUDISK_TRACEif (prt) {
//cw_mark
#if 0printf("UDisk Err:diskStatus=%d,resetUDisk=%d,menumode=%d\n",
#endifprintf("UDisk Err:diskStatus=%d,resetUDisk=%d\n",diskStatus,resetUDisk);}
#endifreturn 0;}}
}int is_udiskfs_in_check() {if ( diskStatus == UDISK_CONN_UFSCHK ) {return 1;} else {return 0;}
}int is_udisk_ok() {int ignoreMenu = 0;// must also check menureturn is_udisk_ok_chk(ignoreMenu);
}int is_udisk_ok_in_menu() {int ignoreMenu = 1;return is_udisk_ok_chk(ignoreMenu);
}// support both /dev/sda and /dev/sda1
#ifdef ZHE_EXT_UDISK_DEV_NAME
static int is_udisk_connected_udisk(char *devNameOut) {
#else
static int is_udisk_connected_udisk() {
#endifint fds = 0;int i,diskId;char devName[64] = "/dev/sda1";
#ifdef ZHE_EXT_UDISK_DEV_NAMEint j, aLen;
#endifdiskId = 0;
#ifdef ZHE_EXT_UDISK_DEV_NAMEaLen=7;for (i=0;i<NUM_DISK_ID;i+=26) {for (j=0;j<26;j++) {fds = open(devName,O_RDONLY);if (fds<=0) {} else {
#ifdef PRINT_POLLUDISK_TRACEprintf("[ARM]: poll udisk %s exists\n",devName);
#endifdiskId = i+DISK_ID_START;close(fds);strcpy(devNameOut,devName);return diskId;}devName[aLen]++;}devName[aLen]='a';aLen++;devName[aLen]='a'; devName[aLen+1]='1'; devName[aLen+2]=0;}
#else for (i=0;i<NUM_DISK_ID;i++) {fds = open(devName,O_RDONLY);if (fds<=0) {} else {//printf("%s exists\n",devName);diskId = i+DISK_ID_START1;close(fds);break;}devName[7]++;}
#endifif ( diskId != 0 )return diskId;// now check /dev/sdastrcpy(devName,"/dev/sda");diskId = 0;
#ifdef ZHE_EXT_UDISK_DEV_NAMEaLen=7;for (i=0;i<NUM_DISK_ID;i+=26) {for (j=0;j<26;j++) {fds = open(devName,O_RDONLY);if (fds<=0) {} else {
#ifdef PRINT_POLLUDISK_TRACEprintf("[ARM]: poll udisk %s exists\n",devName);
#endifdiskId = (i+DISK_ID_START)|0x08000000 ;close(fds);strcpy(devNameOut,devName);return diskId;}devName[aLen]++;}devName[aLen]='a';aLen++;devName[aLen]='a'; devName[aLen+1]=0;}
#else for (i=0;i<NUM_DISK_ID;i++) {fds = open(devName,O_RDONLY);if (fds<=0) {} else {//printf("%s exists\n",devName);diskId = i+DISK_ID_START2;close(fds);break;}devName[7]++;}
#endifreturn diskId;
}// support both /dev/sda and /dev/sda1
static int is_udisk_connected_mmc() {int fds = 0;int i,diskId;char devName[32] = "/dev/mmcblk0p1";diskId = 0;for (i=0;i<NUM_MMCDISK_ID;i++) {//printf("=====open %s...\n",devName);fds = open(devName,O_RDONLY);if (fds<=0) {} else {diskId = i+DISK_ID_START1;close(fds);break;}devName[11]++;}if ( diskId != 0 ) {//printf("=====find mmc%d...\n",diskId);return diskId;}// now check /dev/mmcblk0strcpy(devName,"/dev/mmcblk0");diskId = 0;for (i=0;i<NUM_MMCDISK_ID;i++) {//printf("=====open %s...\n",devName);fds = open(devName,O_RDONLY);if (fds<=0) {} else {diskId = i+DISK_ID_START2;close(fds);//printf("=====find mmc%d...\n",diskId);break;}devName[11]++;}return diskId;
}//cw_mark
static volatile int storePath=STORAGE_UDISK;
int is_storage_path_udisk() {if ( storePath==STORAGE_UDISK) {return 1;} else {return 0;}
}#ifdef ZHE_EXT_UDISK_DEV_NAME
int is_udisk_connected(char *devName) {
#else
int is_udisk_connected() {
#endifif ( is_storage_path_udisk() ) {
#ifdef ZHE_EXT_UDISK_DEV_NAMEreturn is_udisk_connected_udisk(devName);
#elsereturn is_udisk_connected_udisk();
#endif} else {return is_udisk_connected_mmc();}
}// Explanation:
/*if ( resetUDisk || is_udisk_connected()==0 ) {write "NG" to /media/ram/udiskerr.txtreturn -1}// maybe resource busy?umount /media/sda1rstWrong=1;fixTime=0;while( fixTime<10 && rstWrong==1 ) {if ( resetUDisk ) {write "NG" to /media/ram/udiskerr.txtreturn -1      }execute dosfsck cmdif (cmd return success) {rstWrong=0; // should break out of loop} else {fixTime++;}}if (rstWrong) {write "NG" to /media/ram/udiskerr.txtreturn -1} else {mount udisk to /media/sda1set currDiskIdremove *.RECreturn 0}
*/static int check_udisk_fs_udisk() {int fixTime=1;char diskPath[128];char rstPath[] = "/media/ram/fsckrst.txt";char cmd[128];char str[] = "Free cluster summary wrong";int i, len, rstWrong=1;FILE *fp;int diskId=0;int rtCode;
#ifdef ZHE_EXT_UDISK_DEV_NAMEchar devName[64];
#endif//cw_markchar UDISK_DIR[32] = {"/media/sda1"};fixTime = 10; if ( resetUDisk ) {rstWrong = 1;goto output_rst;}// first lets poll if /dev/sda1 sdb1 or sdc1 exist
#ifdef ZHE_EXT_UDISK_DEV_NAMEdiskId = is_udisk_connected(devName);
#elsediskId = is_udisk_connected();
#endifif (diskId==0) {printf("@@@@check_udisk_fs: Disk not exist when checking fs\n");goto output_rst;}#ifdef ZHE_EXT_UDISK_DEV_NAMEstrcpy(diskPath,devName);strcpy(cmd,"umount /media/sda1");
#elseif (diskId>=DISK_ID_START1 && diskId<(DISK_ID_START1+NUM_DISK_ID) ) {strcpy(diskPath,"/dev/sda1");diskPath[7] = 'a'+(diskId-DISK_ID_START1);sprintf(cmd,"umount %s",UDISK_DIR); // /media/sda1} else if (diskId>=DISK_ID_START2 && diskId<(DISK_ID_START2+NUM_DISK_ID) ) {strcpy(diskPath,"/dev/sda");diskPath[7] = 'a'+(diskId-DISK_ID_START2);sprintf(cmd,"umount %s",UDISK_DIR); // /media/sda1}
#endif#ifdef PRINT_POLLUDISK_TRACEprintf("Checking filesys on %s\n", diskPath);
#endif//printf("@@@@check_udisk_fs: %s\n",cmd);system(cmd);//printf("@@@@check_udisk_fs: %s done\n",cmd);i = 0;len = strlen(str) - 1;#ifdef ZHE_DISABLE_FSCHKrstWrong = 0;#else// ZHENGTING: WHAT IS THIS?// (i<fixTime && rstWrong==1)while( (i<fixTime) & rstWrong ) {
#ifdef PRINT_POLLUDISK_TRACEprintf("checkfix %d time ...\n",i);
#endifif ( resetUDisk ) {rstWrong = 1;break;}// command to check filesyssprintf(cmd,"dosfsck -aw %s",diskPath);printf("@@@@check_udisk_fs: %s\n",cmd);system(cmd);sprintf(cmd, "echo $? > %s",rstPath);printf("@@@@check_udisk_fs: %s\n",cmd);system(cmd);    // open resultfp = fopen(rstPath,"rb");if (!fp) {
#ifdef PRINT_POLLUDISK_TRACEprintf("@@@@check_udisk_fs: cannot open %s\n",rstPath);
#endifbreak;}// check result in filei++;rstWrong = 0;rtCode=-1;fscanf(fp,"%d",&rtCode);if (rtCode==DOSFSCK_NO_ERR || rtCode==DOSFSCK_ERR_CORRECTED) {printf("@@@@check_udisk_fs: OK %d\n",rtCode);} else {printf("@@@@check_udisk_fs: NG %d\n",rtCode);rstWrong=1;}// close result fileif (fp) {fclose(fp);}}
#endifoutput_rst:if ( rstWrong ) {fp = fopen("/media/ram/udiskerr.txt","wb");if (fp) {fprintf(fp,"NG");fclose(fp);} else {printf("@@@@check_udisk_fs: Failed to open /media/ram/udiskerr.txt\n");}
#ifdef PRINT_POLLUDISK_TRACEprintf("@@@@check_udisk_fs: UDisk filesys not fixed NG\n");
#endif// THIS PROBABLY SHOULD BE REMOVED// If there is an UFS eror, cannot remove *.REC anyway
#ifndef ZHE_DISABLE_FSCHKsprintf(cmd,"rm %s/FSCK*.REC",UDISK_DIR);printf("@@@@check_udisk_fs: %s\n",cmd);system(cmd);
#endifreturn -1;} else {fp = fopen("/media/ram/udiskok.txt","wb");if (fp) {fprintf(fp,"OK");fclose(fp);} else {printf("@@@@check_udisk_fs: Failed to open /media/ram/udiskok.txt\n");}
#ifdef PRINT_POLLUDISK_TRACEprintf("@@@@check_udisk_fs: UDisk filesys fixed\n");
#endif#ifdef ZHE_EXT_UDISK_DEV_NAMEif ( diskId!=0 ) {sprintf(cmd,"mount -t vfat %s /media/sda1", diskPath);
//cw_mark//strcpy(videoWritePath,"/media/sda1");}
#elseif (diskId>=DISK_ID_START1 && diskId<(DISK_ID_START1+NUM_DISK_ID) ) {sprintf(cmd,"mount -t vfat /dev/sda1 %s",UDISK_DIR);
//cw_mark//strcpy(videoWritePath,UDISK_DIR);cmd[21] = 'a'+(diskId-DISK_ID_START1);} else if (diskId>=DISK_ID_START2 && diskId<(DISK_ID_START2+NUM_DISK_ID) ) {sprintf(cmd,"mount -t vfat /dev/sda %s",UDISK_DIR);
//cw_mark//strcpy(videoWritePath,UDISK_DIR);cmd[21] = 'a'+(diskId-DISK_ID_START2);}
#endifprintf("@@@@check_udisk_fs: %s\n",cmd);system(cmd);currDiskId = diskId;sprintf(cmd,"rm %s/FSCK*.REC",UDISK_DIR);printf("@@@@check_udisk_fs: %s\n",cmd);system(cmd);return 0;}
}static int check_udisk_fs_mmc() {int fixTime=1;char diskPath[128];char rstPath[] = "/media/ram/fsckrst.txt";char cmd[128];char str[] = "Free cluster summary wrong";int i, len, rstWrong=1;FILE *fp;int diskId=0;int rtCode;
#ifdef ZHE_EXT_UDISK_DEV_NAMEchar dummyDevName[64];
#endif//cw_markchar UDISK_DIR[32] = {"/media/mmc1"};fixTime = 10; if ( resetUDisk ) {rstWrong = 1;goto output_rst;}// first lets poll if /dev/sda1 sdb1 or sdc1 exist
#ifdef ZHE_EXT_UDISK_DEV_NAMEdiskId = is_udisk_connected(dummyDevName);
#elsediskId = is_udisk_connected();
#endifif (diskId==0) {//printf("@@@@@@@@check_udisk_fs: Disk not exist when checking fs\n");goto output_rst;}if (diskId>=DISK_ID_START1 && diskId<(DISK_ID_START1+NUM_MMCDISK_ID) ) {strcpy(diskPath,"/dev/mmcblk0p1");diskPath[11] = '0'+(diskId-DISK_ID_START1);sprintf(cmd,"umount %s",UDISK_DIR); // /media/mmc1} else if (diskId>=DISK_ID_START2 && diskId<(DISK_ID_START2+NUM_MMCDISK_ID) ) {strcpy(diskPath,"/dev/mmcblk0");diskPath[11] = '0'+(diskId-DISK_ID_START2);sprintf(cmd,"umount %s",UDISK_DIR); // /media/mmc1}#ifdef PRINT_POLLUDISK_TRACEprintf("Checking filesys on %s\n", diskPath);
#endif//printf("@@@@@@@@check_udisk_fs: %s\n",cmd);system(cmd);//printf("@@@@@@@@check_udisk_fs: %s done\n",cmd);i = 0;len = strlen(str) - 1;#ifdef ZHE_DISABLE_FSCHKrstWrong = 0;#else// ZHENGTING: WHAT IS THIS?// (i<fixTime && rstWrong==1)while( (i<fixTime) & rstWrong ) {
#ifdef PRINT_POLLUDISK_TRACEprintf("==========checkfix %d time ...\n",i);
#endifif ( resetUDisk ) {rstWrong = 1;break;}// command to check filesyssprintf(cmd,"dosfsck -aw %s",diskPath);printf("@@@@@@@@check_udisk_fs: %s\n",cmd);system(cmd);sprintf(cmd, "echo $? > %s",rstPath);printf("@@@@@@@@check_udisk_fs: %s\n",cmd);system(cmd);    // open resultfp = fopen(rstPath,"rb");if (!fp) {
#ifdef PRINT_POLLUDISK_TRACEprintf("@@@@@@@@check_udisk_fs: cannot open %s\n",rstPath);
#endifbreak;}// check result in filei++;rstWrong = 0;rtCode=-1;fscanf(fp,"%d",&rtCode);if (rtCode==DOSFSCK_NO_ERR || rtCode==DOSFSCK_ERR_CORRECTED) {printf("@@@@@@@@check_udisk_fs: OK %d\n",rtCode);} else {printf("@@@@@@@@check_udisk_fs: NG %d\n",rtCode);rstWrong=1;}// close result fileif (fp) {fclose(fp);}}
#endifoutput_rst:if ( rstWrong ) {fp = fopen("/media/ram/udiskerr.txt","wb");if (fp) {fprintf(fp,"NG");fclose(fp);} else {printf("@@@@@@@@check_udisk_fs: Failed to open /media/ram/udiskerr.txt\n");}
#ifdef PRINT_POLLUDISK_TRACEprintf("@@@@@@@@check_udisk_fs: UDisk filesys not fixed NG\n");
#endif// THIS PROBABLY SHOULD BE REMOVED// If there is an UFS eror, cannot remove *.REC anyway
#ifndef ZHE_DISABLE_FSCHKsprintf(cmd,"rm %s/FSCK*.REC",UDISK_DIR);printf("@@@@@@@@check_udisk_fs: %s\n",cmd);system(cmd);
#endifreturn -1;} else {fp = fopen("/media/ram/udiskok.txt","wb");if (fp) {fprintf(fp,"OK");fclose(fp);} else {printf("@@@@@@@@check_udisk_fs: Failed to open /media/ram/udiskok.txt\n");}
#ifdef PRINT_POLLUDISK_TRACEprintf("@@@@@@@@check_udisk_fs: UDisk filesys fixed\n");
#endifif (diskId>=DISK_ID_START1 && diskId<(DISK_ID_START1+NUM_MMCDISK_ID) ) {sprintf(cmd,"mount -t vfat /dev/mmcblk0p1 %s",UDISK_DIR);
//cw_mark//strcpy(videoWritePath,UDISK_DIR);cmd[25] = '0'+(diskId-DISK_ID_START1);} else if (diskId>=DISK_ID_START2 && diskId<(DISK_ID_START2+NUM_MMCDISK_ID) ) {sprintf(cmd,"mount -t vfat /dev/mmcblk0 %s",UDISK_DIR);
//cw_mark//strcpy(videoWritePath,UDISK_DIR);cmd[25] = '0'+(diskId-DISK_ID_START2);}printf("@@@@@@@@check_udisk_fs: %s\n",cmd);system(cmd);currDiskId = diskId;sprintf(cmd,"rm %s/FSCK*.REC",UDISK_DIR);printf("@@@@@@@@check_udisk_fs: %s\n",cmd);system(cmd);return 0;}
}int check_udisk_fs() {if ( is_storage_path_udisk() ) {return check_udisk_fs_udisk();} else {return check_udisk_fs_mmc();}
}//cw_mark
#if 0
void* poll_udisk_func(void *param) {
#endif
int main(){char buf[128];char cmdbuf[128];int diskFsErr = -1;int diskId = 1;
#ifdef PRINT_POLLUDISK_TRACEint prtCnt = 0;int prtCntTrd = 10;
#endifint chkCnt = 0;
#ifdef ZHE_EXT_UDISK_DEV_NAMEchar devName[64];
#endif#ifdef PRINT_POLLUDISK_TRACEprintf("ZHE: srvapp_polludisk started.\n");
#endifwhile(1) {
#ifdef PRINT_POLLUDISK_TRACEprtCnt++;if (prtCnt>=prtCntTrd) {prtCnt=0;}
#endif//printf("======== Checking UDISK/MMC ...\n");if ( diskStatus == UDISK_UCONN_UFSCHK ) {//printf("========= current status un-connected\n");// do not check file write timeout since we started fixing ufs
//cw_mark
//      reset_fw_time();
#ifdef ZHE_EXT_UDISK_DEV_NAMEdiskId = is_udisk_connected(devName);
#elsediskId = is_udisk_connected();
#endifresetUDisk = 0; // clear the flagcurrDiskId = diskId;if (diskId==0) {//printf("========= remain un-connected\n");
#ifdef PRINT_POLLUDISK_TRACEif ( prtCnt==0 ) {printf("UDisk: 1, unconnected\n");}
#endif} else {//printf("========= change to connected but not checked\n");diskStatus = UDISK_CONN_UFSCHK;} }if ( diskStatus == UDISK_CONN_UFSCHK ) {//printf("========= current status connected but not checked\n");// connected, lets check the fsdiskFsErr = check_udisk_fs();if (diskFsErr==-1) {currDiskId = 0;diskStatus = UDISK_UCONN_UFSCHK;//printf("========= fs error, change to unconnected status\n");
#ifdef PRINT_POLLUDISK_TRACEif ( prtCnt==0 ) {printf("UDisk: 2, connected, fs error\n");}
#endif} else {// currDiskId should have been set in check_udisk_fs// ZHE_CHKUDISK_FILEOP// delay a bit before allowing file opsleep(2);//printf("========= fs ok, change to connected & checked\n");diskStatus = UDISK_CONN_FSCHK;
//cw_mark
//        resync_videoWritePath( videoWritePath );//cw_mark
#if 0if (menumode==0) { //printf("========= notify to update status page due to mmc GOOD\n");updateStatusPg = 1;}
#endif#ifdef PRINT_POLLUDISK_TRACEif ( prtCnt==0 ) {printf("UDisk: 3, connected, fs OK\n");}
#endif}}if ( diskStatus == UDISK_CONN_FSCHK ) {//printf("========= current status connected & checked\n");
#ifdef ZHE_EXT_UDISK_DEV_NAMEdiskId = is_udisk_connected(devName);
#elsediskId = is_udisk_connected();
#endifif ( diskId!=currDiskId || resetUDisk ) {// udisk is disconnected
#ifdef PRINT_POLLUDISK_TRACEif ( prtCnt==0 ) {printf("UDisk: 4, unconnected, diskId=%d,currDiskId=%d,resetUDisk=%d!\n",diskId,currDiskId,resetUDisk);}
#endif//printf("========= diskId=%d, change to unconnected status\n",diskId);        diskStatus = UDISK_UCONN_UFSCHK;// we might got error:// umount: can't umount /media/sda1: Device or resource busysleep(1);
//cw_mark//sprintf(cmdbuf,"umount %s",videoWritePath);printf("%s\n",cmdbuf);system(cmdbuf);
//cw_mark//strcpy(videoWritePath,"nexist");printf("%s done\n",cmdbuf);currDiskId = 0;
//cw_mark
#if 0if (menumode==0) { //printf("========= notify to update statusPg due to mmc loss\n");  updateStatusPg = 1;}
#endif} else {// stay connected, do nothing//printf("========= MMC STATE GOOD\n");diskStatus = UDISK_CONN_FSCHK;
#ifdef PRINT_POLLUDISK_TRACEif ( prtCnt==0 ) {printf("UDisk: 5, connected, fs OK\n");}
#endif} }usleep(1000000);if (chkCnt++) {if (chkCnt >= 3) {uDiskNChked = 0;}}}printf("srvapp_polludisk exited\n");return 0;
}

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