如何判断linux下NFS服务是否启动??
来源: 互联网 发布时间:2015-09-15
本文导语: 如题:如何判断linux下NFS服务是否启动?? | busybox里的,可参考 /* find_pid_by_name() * * This finds the pid of the specified process. * Currently, it's implemented by rummaging through * the proc f...
如题:如何判断linux下NFS服务是否启动??
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busybox里的,可参考
/* find_pid_by_name()
*
* This finds the pid of the specified process.
* Currently, it's implemented by rummaging through
* the proc filesystem.
*
* Returns a list of all matching PIDs
*/
extern long* find_pid_by_name( char* pidName)
{
DIR *dir;
struct dirent *next;
long* pidList=NULL;
int i=0;
dir = opendir("/proc");
if (!dir)
perror_msg_and_die("Cannot open /proc");
while ((next = readdir(dir)) != NULL) {
FILE *status;
char filename[READ_BUF_SIZE];
char buffer[READ_BUF_SIZE];
char name[READ_BUF_SIZE];
/* Must skip ".." since that is outside /proc */
if (strcmp(next->d_name, "..") == 0)
continue;
/* If it isn't a number, we don't want it */
if (!isdigit(*next->d_name))
continue;
sprintf(filename, "/proc/%s/status", next->d_name);
if (! (status = fopen(filename, "r")) ) {
continue;
}
if (fgets(buffer, READ_BUF_SIZE-1, status) == NULL) {
fclose(status);
continue;
}
fclose(status);
/* Buffer should contain a string like "Name: binary_name" */
sscanf(buffer, "%*s %s", name);
if (strcmp(name, pidName) == 0) {
pidList=xrealloc( pidList, sizeof(long) * (i+2));
pidList[i++]=strtol(next->d_name, NULL, 0);
}
}
if (pidList) {
pidList[i]=0;
} else {
pidList=xrealloc( pidList, sizeof(long));
pidList[0]=-1;
}
return pidList;
}
/* find_pid_by_name()
*
* This finds the pid of the specified process.
* Currently, it's implemented by rummaging through
* the proc filesystem.
*
* Returns a list of all matching PIDs
*/
extern long* find_pid_by_name( char* pidName)
{
DIR *dir;
struct dirent *next;
long* pidList=NULL;
int i=0;
dir = opendir("/proc");
if (!dir)
perror_msg_and_die("Cannot open /proc");
while ((next = readdir(dir)) != NULL) {
FILE *status;
char filename[READ_BUF_SIZE];
char buffer[READ_BUF_SIZE];
char name[READ_BUF_SIZE];
/* Must skip ".." since that is outside /proc */
if (strcmp(next->d_name, "..") == 0)
continue;
/* If it isn't a number, we don't want it */
if (!isdigit(*next->d_name))
continue;
sprintf(filename, "/proc/%s/status", next->d_name);
if (! (status = fopen(filename, "r")) ) {
continue;
}
if (fgets(buffer, READ_BUF_SIZE-1, status) == NULL) {
fclose(status);
continue;
}
fclose(status);
/* Buffer should contain a string like "Name: binary_name" */
sscanf(buffer, "%*s %s", name);
if (strcmp(name, pidName) == 0) {
pidList=xrealloc( pidList, sizeof(long) * (i+2));
pidList[i++]=strtol(next->d_name, NULL, 0);
}
}
if (pidList) {
pidList[i]=0;
} else {
pidList=xrealloc( pidList, sizeof(long));
pidList[0]=-1;
}
return pidList;
}
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ps -aux看看你的NFS的守护进程是不是出现在了列表中
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ps -aux|grep -v grep|grep nfs
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chkconfig --list nfs
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或者 /etc/init.d/nfs status