mom_mach.c

来自「OpenPBS」· C语言 代码 · 共 2,003 行 · 第 1/3 页

				sprintf(log_buffer,
					"%s: get_proc_stat", dent->d_name);
				log_err(errno, id, log_buffer);
			}
			continue;
		}

		if (jobid != ps->session)
			continue;

		found = 1;
		resisize += ps->rss;
	}
	if (found) {
		/* in KB */
		sprintf(ret_string, "%lukb",(resisize * (ulong)pagesize) >> 10);
		return ret_string;
	}

	rm_errno = RM_ERR_EXIST;
	return NULL;
}

static char	*
resi_proc(pid)
pid_t	pid;
{
	char			*id = "resi_proc";
	proc_stat_t		*ps;


	if ((ps = get_proc_stat(pid)) == NULL) {
		if (errno != ENOENT) {
			sprintf(log_buffer,
				"%d: get_proc_stat(PIOCPSINFO)", pid);
			log_err(errno, id, log_buffer);
		}
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	/* in KB */
	sprintf(ret_string, "%lukb", ((ulong)ps->rss * (ulong)pagesize) >> 10);
	return ret_string;
}

static char	*
resi(attrib)
struct	rm_attribute	*attrib;
{
	char			*id = "resi";
	int			value;

	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, "session") == 0)
		return (resi_job((pid_t)value));
	else if (strcmp(attrib->a_qualifier, "proc") == 0)
		return (resi_proc((pid_t)value));
	else {
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
}

char	*
sessions(attrib)
struct	rm_attribute	*attrib;
{
	char			*id = "sessions";
	int			j;
	struct dirent		*dent;
	proc_stat_t		*ps;
	char			*fmt;
	int			njids = 0;
	pid_t			*jids, *hold;
	static		int	maxjid = 200;
	register	pid_t	jobid;


	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if ((jids = (pid_t *)calloc(maxjid, sizeof(pid_t))) == NULL) {
		log_err(errno, id, "no memory");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	/*
	** Search for members of session
	*/
	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 (ps->uid == 0)
			continue;
		if ((jobid = ps->session) == 0)
			continue;
		DBPRT(("%s[%d]: pid %d sid %d\n",
		       id, njids, ps->pid, jobid))

		for (j=0; j<njids; j++) {
			if (jids[j] == jobid)
				break;
		}
		if (j == njids) {		/* not found */
			if (njids == maxjid) {	/* need more space */
				maxjid += 100;
				hold = (pid_t *)realloc(jids, maxjid);
				if (hold == NULL) {
					log_err(errno, id, "realloc");
					rm_errno = RM_ERR_SYSTEM;
					free(jids);
					return NULL;
				}
				jids = hold;
			}
			jids[njids++] = jobid;	/* add jobid to list */
		}
	}

	fmt = ret_string;
	for (j=0; j<njids; j++) {
		checkret(&fmt, 100);
		sprintf(fmt, " %d", (int)jids[j]);
		fmt += strlen(fmt);
	}
	free(jids);
	return ret_string;
}

char	*
nsessions(attrib)
struct	rm_attribute	*attrib;
{
	char	*result, *ch;
	int	num = 0;

	if ((result = sessions(attrib)) == NULL)
		return result;

	for (ch=result; *ch; ch++) {
		if (*ch == ' ')		/* count blanks */
			num++;
	}
	sprintf(ret_string, "%d", num);
	return ret_string;
}

char	*
pids(attrib)
struct	rm_attribute	*attrib;
{
	char		*id = "pids";
	pid_t		jobid;
	struct	dirent	*dent;
	proc_stat_t	*ps;
	int		i;
	char		*fmt;
	int		num_pids;

	if (attrib == NULL) {
		log_err(-1, id, no_parm);
		rm_errno = RM_ERR_NOPARAM;
		return NULL;
	}
	if ((jobid = (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, "session") != 0) {
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}

	/*
	** Search for members of session
	*/
	rewinddir(pdir);
	fmt = ret_string;
	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;
		}

		DBPRT(("%s[%d]: pid: %s sid %d\n",
		       id, num_pids, dent->d_name, ps->session))
		if (jobid != ps->session)
			continue;

		sprintf(fmt, "%s ", dent->d_name);
		fmt += strlen(fmt);
		num_pids++;
	}
	if (num_pids == 0) {
		rm_errno = RM_ERR_EXIST;
		return NULL;
	}
	return ret_string;
}

char	*
nusers(attrib)
struct	rm_attribute	*attrib;
{
	char			*id = "nusers";
	int			j;
	struct dirent		*dent;
	proc_stat_t		*ps;
	int			nuids = 0;
	uid_t			*uids, *hold;
	static		int	maxuid = 200;
	register	uid_t	uid;

	if (attrib) {
		log_err(-1, id, extra_parm);
		rm_errno = RM_ERR_BADPARAM;
		return NULL;
	}
	if ((uids = (uid_t *)calloc(maxuid, sizeof(uid_t))) == NULL) {
		log_err(errno, id, "no memory");
		rm_errno = RM_ERR_SYSTEM;
		return NULL;
	}

	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 ((uid = ps->uid) == 0)
			continue;

		DBPRT(("%s[%d]: pid %d uid %d\n",
		       id, nuids, ps->pid, uid))

		for (j=0; j<nuids; j++) {
			if (uids[j] == uid)
				break;
		}
		if (j == nuids) {		/* not found */
			if (nuids == maxuid) {	/* need more space */
				maxuid += 100;
				hold = (uid_t *)realloc(uids, maxuid);
				if (hold == NULL) {
					log_err(errno, id, "realloc");
					rm_errno = RM_ERR_SYSTEM;
					free(uids);
					return NULL;
				}
				uids = hold;
			}
			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;
}