mom_mach.c

openPBS的开放源代码

			uids[nuids++] = uid;	/* add uid to list */
		}
	}

	sprintf(ret_string, "%d", nuids);
	free(uids);
	return ret_string;
}

static char	*
totmem(attrib)
struct	rm_attribute	*attrib;
{
	char	*id = "totmem";
	proc_mem_t	*mm;

	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if ((mm = get_proc_mem()) == NULL) {
		log_err(errno, id, "get_proc_mem");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}
	DBPRT(("%s: total mem=%u\n", id, mm->total))
	sprintf(ret_string, "%lukb", (ulong)mm->total >> 10); /* KB */
	return ret_string;
}

static char	*
availmem(attrib)
struct	rm_attribute	*attrib;
{
	char	*id = "availmem";
	proc_mem_t	*mm;

	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if ((mm = get_proc_mem()) == NULL) {
		log_err(errno, id, "get_proc_mem");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}
	DBPRT(("%s: free mem=%u\n", id, mm->free))
	sprintf(ret_string, "%lukb", (ulong)mm->free >> 10); /* KB */
	return ret_string;
}


static char	*
ncpus(attrib)
struct	rm_attribute	*attrib;
{
	char		*id = "ncpus", label[128];
	FILE		*fp;
	int		procs;
	unsigned int	pmem;

	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if ((fp = fopen("/proc/cpuinfo", "r")) == NULL)
		return(NULL);

	procs = 0;
	while (!feof(fp))  {
		fscanf(fp, "%s %*[^\n]%*c", label);
		if (strcmp("processor", label) == 0)
			procs++;
	}
			
	sprintf(ret_string, "%d", procs);
	fclose(fp);
	return ret_string;
}

static char	*
physmem(attrib)
struct	rm_attribute	*attrib;
{
	char		*id = "physmem";
	struct	stat	buf;


	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if (stat("/proc/kcore", &buf))  {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}  else  {
		/* length of /proc/kcore == physical memory + 4K */
		sprintf(ret_string, "%lukb",
			((ulong)buf.st_size - (ulong)4096) >> 10); /* KB */
		return ret_string;
	}
}

char	*
size_fs(param)
char	*param;
{
	char		*id = "size_fs";
	FILE		*mf;
	struct	mntent	*mp;
	struct	statfs	fsbuf;

	if (param[0] != '/') {
		sprintf(log_buffer, "%s: not full path filesystem name: %s\n",
			id, param);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if (statfs(param, &fsbuf) == -1) {
		log_err(errno, id, "statfs");
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	sprintf(ret_string, "%lukb",
		(ulong)(((double)fsbuf.f_bsize * (double)fsbuf.f_bfree) / 1024.0)); /* KB */
	return ret_string;
}

char	*
size_file(param)
char	*param;
{
	char		*id = "size_file";
	struct	stat	sbuf;

	if (param[0] != '/') {
		sprintf(log_buffer, "%s: not full path filesystem name: %s\n",
			id, param);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if (stat(param, &sbuf) == -1) {
		log_err(errno, id, "stat");
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	sprintf(ret_string, "%ukb", sbuf.st_size >> 10); /* KB */
	return ret_string;
}

char	*
size(attrib)
struct	rm_attribute	*attrib;
{
	char	*id = "size";
	char	*param;

	if (attrib == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if (momgetattr(NULL)) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	param = attrib->a_value;
	if (strcmp(attrib->a_qualifier, "file") == 0)
		return (size_file(param));
	else if (strcmp(attrib->a_qualifier, "fs") == 0)
		return (size_fs(param));
	else {
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
}

time_t	maxtm;

void
setmax(dev)
char	*dev;
{
	struct	stat	sb;

	if (stat(dev, &sb) == -1)
		return;
	if (maxtm < sb.st_atime)
		maxtm = sb.st_atime;

	return;
}

char	*
idletime(attrib)
struct	rm_attribute	*attrib;
{
	char	*id = "idletime";
	DIR	*dp;
	struct	dirent	*de;
	char	ttyname[50];
	time_t	curtm;

	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if ((dp=opendir("/dev")) == NULL) {
		log_err(errno, id, "opendir /dev");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	maxtm = 0;
	curtm = time(NULL);

	setmax("/dev/mouse");
	while ((de=readdir(dp)) != NULL) {
		if (maxtm >= curtm)
			break;
		if (strncmp(de->d_name, "tty", 3))
			continue;
		sprintf(ttyname, "/dev/%s", de->d_name);
		setmax(ttyname);
	}
	closedir(dp);

	sprintf(ret_string, "%d", MAX(0, curtm - maxtm));
	return ret_string;
}



static char	*
walltime(attrib)
struct	rm_attribute	*attrib;
{
	char			*id = "walltime";
	int			value, job, found = 0;
	time_t			now, start;
	proc_stat_t		*ps;
	struct dirent		*dent;

	if (attrib == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if ((value = atoi(attrib->a_value)) == 0) {
		sprintf(log_buffer, "bad param: %s", attrib->a_value);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if (momgetattr(NULL)) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if (strcmp(attrib->a_qualifier, "proc") == 0)
		job = 0;
	else if (strcmp(attrib->a_qualifier, "session") == 0)
		job = 1;
	else {
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if ((now = time(NULL)) <= 0) {
		log_err(errno, id, "time");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	start = now;
	rewinddir(pdir);
	while ((dent = readdir(pdir)) != NULL) {
		if (!isdigit(dent->d_name[0]))
			continue;

		if ((ps = get_proc_stat(atoi(dent->d_name))) == NULL) {
			if (errno != ENOENT) {
				sprintf(log_buffer,
					"%s: get_proc_stat", dent->d_name);
				log_err(errno, id, log_buffer);
			}
			continue;
		}
		if (job) {
			if (value != ps->session)
				continue;
		}
		else {
			if (value != ps->pid)
				continue;
		}

		found = 1;
		start = MIN(start, ps->start_time);
	}

	if (found) {
		sprintf(ret_string, "%ld", (long)((double)(now - start) * wallfactor));
		return ret_string;
	}

	rm_errno = RM_ERR_EXIST;
	return NULL;
}

int
get_la(rv)
	double	*rv;
{
	FILE	*fp;
	char	*id = "get_la";
	float	load;

        if ((fp = fopen("/proc/loadavg", "r")) == NULL)
                return(rm_errno = RM_ERR_SYSTEM);

	if (fscanf(fp, "%f", &load) != 1) {
		log_err(errno, id, "fscanf of load in /proc/loadavg");
		(void) fclose(fp);
		return (rm_errno = RM_ERR_SYSTEM);
	}

	*rv = (double)load;
	(void) fclose(fp);
	return 0;
}

u_long
gracetime(secs)
u_long	secs;
{
	time_t	now = time((time_t *)NULL);

	if (secs > now)		/* time is in the future */
		return (secs - now);
	else
		return 0;
}

static char	*
quota(attrib)
struct	rm_attribute	*attrib;
{
	char	*id = "quota";
	int			type;
	dev_t			dirdev;
	uid_t			uid;
	struct	stat		sb;
	struct	mntent		*me;
	struct	dqblk		qi;
	FILE			*m;
	struct	passwd		*pw;
	static	char		*type_array[] = {
		"harddata",
		"softdata",
		"currdata",
		"hardfile",
		"softfile",
		"currfile",
		"timedata",
		"timefile",
	};
	enum	type_name {
		harddata,
		softdata,
		currdata,
		hardfile,
		softfile,
		currfile,
		timedata,
		timefile,
		type_end
	};

	if (attrib == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if (strcmp(attrib->a_qualifier, "type")) {
		sprintf(log_buffer, "unknown qualifier %s",
			attrib->a_qualifier);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}		

	for (type=0; type<type_end; type++) {
		if (strcmp(attrib->a_value, type_array[type]) == 0)
			break;
	}
	if (type == type_end) {		/* check to see if command is legal */
		sprintf(log_buffer, "bad param: %s=%s",
			attrib->a_qualifier, attrib->a_value);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	if ((attrib = momgetattr(NULL)) == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if (strcmp(attrib->a_qualifier, "dir") != 0) {
		sprintf(log_buffer, "bad param: %s=%s",
			attrib->a_qualifier, attrib->a_value);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if (attrib->a_value[0] != '/') {	/* must be absolute path */
		sprintf(log_buffer,
			"not an absolute path: %s", attrib->a_value);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if (stat(attrib->a_value, &sb) == -1) {
		sprintf(log_buffer, "stat: %s", attrib->a_value);
		log_err(errno, id, log_buffer);
		rm_errno = RM_ERR_EXIST;
		return NULL;
	}
	dirdev = sb.st_dev;
	DBPRT(("dir has devnum %d\n", dirdev))

	if ((m = setmntent(MOUNTED, "r")) == NULL) {
		log_err(errno, id, "setmntent");
		rm_errno = RM_ERR_SYSTEM;
                return NULL;
        }
	while ((me = getmntent(m)) != NULL) {
		if (strcmp(me->mnt_type, MNTTYPE_IGNORE) == 0)
			continue;
		if (stat(me->mnt_dir, &sb) == -1) {
			sprintf(log_buffer, "stat: %s", me->mnt_dir);
			log_err(errno, id, log_buffer);
			continue;
		}
		DBPRT(("%s\t%s\t%d\n", me->mnt_fsname, me->mnt_dir, sb.st_dev))
		if (!memcmp(&sb.st_dev, &dirdev, sizeof(dev_t)))
			break;
	}
	endmntent(m);
	if (me == NULL)	{
		sprintf(log_buffer,
			"filesystem %s not found", attrib->a_value);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_EXIST;
		return NULL;
	}

#if defined(MNTOPT_NOQUOTA)
	if (hasmntopt(me, MNTOPT_NOQUOTA) != NULL) {
		sprintf(log_buffer,
			"no quotas on filesystem %s", me->mnt_dir);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_EXIST;
		return NULL;
	}
#endif /* MNTOPT_NOQUOTA */

	if ((attrib = momgetattr(NULL)) == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if (strcmp(attrib->a_qualifier, "user") != 0) {
		sprintf(log_buffer, "bad param: %s=%s",
			attrib->a_qualifier, attrib->a_value);
		log_err(-1, id, log_buffer);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if ((uid = (uid_t)atoi(attrib->a_value)) == 0) {
		if ((pw = getpwnam(attrib->a_value)) == NULL) {
			sprintf(log_buffer,
				"user not found: %s", attrib->a_value);
			log_err(-1, id, log_buffer);
			rm_errno = RM_ERR_EXIST;
			return NULL;
		}
		uid = pw->pw_uid;
	}

	if (syscall(SYS_quotactl, QCMD(Q_GETQUOTA,USRQUOTA),
			me->mnt_fsname, uid, (caddr_t)&qi) == -1) {
		log_err(errno, id, "quotactl");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	/* sizes in KB */
	switch (type) {
	case harddata:
		sprintf(ret_string, "%ukb", qi.dqb_bhardlimit >> 10);
		break;
	case softdata:
		sprintf(ret_string, "%ukb", qi.dqb_bsoftlimit >> 10);
		break;
	case currdata:
		sprintf(ret_string, "%ukb", qi.dqb_curblocks >> 10);
		break;
	case hardfile:
		sprintf(ret_string, "%u", qi.dqb_ihardlimit);
		break;
	case softfile:
		sprintf(ret_string, "%u", qi.dqb_isoftlimit);
		break;
	case currfile:
		sprintf(ret_string, "%u", qi.dqb_curinodes);
		break;
	case timedata:
		sprintf(ret_string, "%u", gracetime((u_long)qi.dqb_btime));
		break;
	case timefile:
		sprintf(ret_string, "%u", gracetime((u_long)qi.dqb_itime));
		break;
	}

	return ret_string;
}