mom_mach.c

openPBS的开放源代码

		log_err(-1, id, nokernel);
		rm_errno = RM_ERR_SYSTEM;
		return 1;
	}
	if (nl[KSYM_ANON].n_type == 0) {
		log_err(-1, id, "anoninfo struct not found");
		rm_errno = RM_ERR_SYSTEM;
		return 1;
	}
	if (kvm_read(kd, nl[KSYM_ANON].n_value, (char *)&ai,
		     sizeof (struct anoninfo)) != sizeof (struct anoninfo)) {
		log_err(errno, id, "kvm_read");
		rm_errno = RM_ERR_SYSTEM;
		return 1;
	}
	lastai = reqnum;
	return 0;
}

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

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

	if (getanon(id))
		return NULL;

	sprintf(ret_string, "%ukb", ctob(ai.ani_max) >> 10); /* KB */
	return ret_string;
}

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

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

	if (getanon(id))
		return NULL;

	/* in KB */
	sprintf(ret_string, "%dkb", (ctob(ai.ani_max - ai.ani_resv)) >> 10);
	return ret_string;
}

static char	*
physmem(attrib)
struct	rm_attribute	*attrib;
{
	char		*id = "physmem";
	unsigned int	pmem;

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

	if (kd == NULL) {
		log_err(-1, id, nokernel);
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}
	if (nl[KSYM_PHYS].n_type == 0) {
		log_err(-1, id, "physmem count not found");
		rm_errno = RM_ERR_SYSTEM;
		return 0;
	}
	if (kvm_read(kd, nl[KSYM_PHYS].n_value, (char *)&pmem,
		     sizeof (pmem)) != sizeof (pmem)) {
		log_err(errno, id, "kvm_read");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	pmem *= getpagesize();

	sprintf(ret_string, "%ukb", pmem >> 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",
			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;
	}
	/* in KB */
	sprintf(ret_string, "%lukb", (unsigned long)(((double)fsbuf.f_bsize * (double)fsbuf.f_bavail) / 1024.0));
	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",
			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/kbd");
	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";
	register struct user	*uarea;
	pid_t			value;
	int			i, job, found = 0;
	time_t			now, start;

	if (attrib == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if ((value = (pid_t)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 (getprocs() == 0) {
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}
	if ((now = time(NULL)) <= 0) {
		log_err(errno, id, "time");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	start = now;
	for (i=0; i<nproc; i++) {
		register struct proc	*pp = &proc_tbl[i];

		if (pp->p_stat==0)
			continue;

		if (job) {
			if (value != sess_tbl[i])
				continue;
		}
		else {
			if (value != pp->p_pid)
				continue;
		}

		if ((uarea = kvm_getu(kd, pp)) == NULL) {
			log_err(errno, id, "kvm_getu");
			rm_errno = RM_ERR_SYSTEM;
			return NULL;
		}
		found = 1;
		start = MIN(start, uarea->u_start.tv_sec);
	}
	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
{
	char	*id = "get_la";
	long	load;

	if (kd == NULL) {
		log_err(-1, id, nokernel);
		return (rm_errno = RM_ERR_SYSTEM);
	}
	if (nl[KSYM_LOAD].n_type == 0) {
		log_err(-1, id, "loadaverage count not found");
		return (rm_errno = RM_ERR_SYSTEM);
	}
	if (kvm_read(kd, nl[KSYM_LOAD].n_value, (char *)&load,
		     sizeof(load)) != sizeof(load)) {
		log_err(errno, id, "kvm_read");
		return (rm_errno = RM_ERR_SYSTEM);
	}

	*rv = (double)load/FSCALE;
	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 (sb.st_dev == dirdev)
			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 (hasmntopt(me, MNTOPT_QUOTA) == 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;
	}

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

	/* all sizes in KB */
	switch (type) {
	case harddata:
		sprintf(ret_string, "%ukb", dbtob(qi.dqb_bhardlimit) >> 10);
		break;
	case softdata:
		sprintf(ret_string, "%ukb", dbtob(qi.dqb_bsoftlimit) >> 10);
		break;
	case currdata:
		sprintf(ret_string, "%ukb", dbtob(qi.dqb_curblocks) >> 10);
		break;
	case hardfile:
		sprintf(ret_string, "%u", qi.dqb_fhardlimit);
		break;
	case softfile:
		sprintf(ret_string, "%u", qi.dqb_fsoftlimit);
		break;
	case currfile:
		sprintf(ret_string, "%u", qi.dqb_curfiles);
		break;
	case timedata:
		sprintf(ret_string, "%u", gracetime(qi.dqb_btimelimit));
		break;
	case timefile:
		sprintf(ret_string, "%u", gracetime(qi.dqb_ftimelimit));
		break;
	}

	return ret_string;
}