[thirdparty/util-linux.git] / sys-utils / ipcutils.c

#include <inttypes.h>

#include "c.h"
#include "nls.h"
#include "xalloc.h"
#include "path.h"
#include "pathnames.h"
#include "ipcutils.h"
#include "strutils.h"

#ifndef SEMVMX
# define SEMVMX  32767	/* <= 32767 semaphore maximum value */
#endif
#ifndef SHMMIN
# define SHMMIN 1	/* min shared segment size in bytes */
#endif


int ipc_msg_get_limits(struct ipc_limits *lim)
{
	if (access(_PATH_PROC_IPC_MSGMNI, F_OK) == 0 &&
	    access(_PATH_PROC_IPC_MSGMNB, F_OK) == 0 &&
	    access(_PATH_PROC_IPC_MSGMAX, F_OK) == 0) {

		ul_path_read_s32(NULL, &lim->msgmni, _PATH_PROC_IPC_MSGMNI);
		ul_path_read_s32(NULL, &lim->msgmnb, _PATH_PROC_IPC_MSGMNB);
		ul_path_read_u64(NULL, &lim->msgmax, _PATH_PROC_IPC_MSGMAX);
	} else {
		struct msginfo msginfo;

		if (msgctl(0, IPC_INFO, (struct msqid_ds *) &msginfo) < 0)
			return 1;
		lim->msgmni = msginfo.msgmni;
		lim->msgmnb = msginfo.msgmnb;
		lim->msgmax = msginfo.msgmax;
	}

	return 0;
}

int ipc_sem_get_limits(struct ipc_limits *lim)
{
	FILE *f;
	int rc = 0;

	lim->semvmx = SEMVMX;

	f = fopen(_PATH_PROC_IPC_SEM, "r");
	if (f) {
		rc = fscanf(f, "%d\t%d\t%d\t%d",
		       &lim->semmsl, &lim->semmns, &lim->semopm, &lim->semmni);
		fclose(f);
	}

	if (rc != 4) {
		struct seminfo seminfo = { .semmni = 0 };
		union semun arg = { .array = (ushort *) &seminfo };

		if (semctl(0, 0, IPC_INFO, arg) < 0)
			return 1;
		lim->semmni = seminfo.semmni;
		lim->semmsl = seminfo.semmsl;
		lim->semmns = seminfo.semmns;
		lim->semopm = seminfo.semopm;
	}

	return 0;
}

int ipc_shm_get_limits(struct ipc_limits *lim)
{
	lim->shmmin = SHMMIN;

	if (access(_PATH_PROC_IPC_SHMALL, F_OK) == 0 &&
	    access(_PATH_PROC_IPC_SHMMAX, F_OK) == 0 &&
	    access(_PATH_PROC_IPC_SHMMNI, F_OK) == 0) {

		ul_path_read_u64(NULL, &lim->shmall, _PATH_PROC_IPC_SHMALL);
		ul_path_read_u64(NULL, &lim->shmmax, _PATH_PROC_IPC_SHMMAX);
		ul_path_read_u64(NULL, &lim->shmmni, _PATH_PROC_IPC_SHMMNI);

	} else {
		struct shminfo *shminfo;
		struct shmid_ds shmbuf;

		if (shmctl(0, IPC_INFO, &shmbuf) < 0)
			return 1;
		shminfo = (struct shminfo *) &shmbuf;
		lim->shmmni = shminfo->shmmni;
		lim->shmall = shminfo->shmall;
		lim->shmmax = shminfo->shmmax;
	}

	return 0;
}

int ipc_shm_get_info(int id, struct shm_data **shmds)
{
	FILE *f;
	int i = 0, maxid;
	char buf[BUFSIZ];
	struct shm_data *p;
	struct shmid_ds dummy;

	p = *shmds = xcalloc(1, sizeof(struct shm_data));
	p->next = NULL;

	f = fopen(_PATH_PROC_SYSV_SHM, "r");
	if (!f)
		goto shm_fallback;

	while (fgetc(f) != '\n');		/* skip header */

	while (fgets(buf, sizeof(buf), f) != NULL) {
		/* scan for the first 14-16 columns (e.g. Linux 2.6.32 has 14) */
		p->shm_rss = 0xdead;
		p->shm_swp = 0xdead;
		if (sscanf(buf,
			  "%d %d  %o %"SCNu64 " %u %u  "
			  "%"SCNu64 " %u %u %u %u %"SCNi64 " %"SCNi64 " %"SCNi64
			  " %"SCNu64 " %"SCNu64 "\n",
			   &p->shm_perm.key,
			   &p->shm_perm.id,
			   &p->shm_perm.mode,
			   &p->shm_segsz,
			   &p->shm_cprid,
			   &p->shm_lprid,
			   &p->shm_nattch,
			   &p->shm_perm.uid,
			   &p->shm_perm.gid,
			   &p->shm_perm.cuid,
			   &p->shm_perm.cgid,
			   &p->shm_atim,
			   &p->shm_dtim,
			   &p->shm_ctim,
			   &p->shm_rss,
			   &p->shm_swp) < 14)
			continue; /* invalid line, skipped */

		if (id > -1) {
			/* ID specified */
			if (id == p->shm_perm.id) {
				i = 1;
				break;
			} else
				continue;
		}

		p->next = xcalloc(1, sizeof(struct shm_data));
		p = p->next;
		p->next = NULL;
		i++;
	}

	if (i == 0)
		free(*shmds);
	fclose(f);
	return i;

	/* Fallback; /proc or /sys file(s) missing. */
shm_fallback:
	maxid = shmctl(0, SHM_INFO, &dummy);

	for (int j = 0; j <= maxid; j++) {
		int shmid;
		struct shmid_ds shmseg;
		struct ipc_perm *ipcp = &shmseg.shm_perm;

		shmid = shmctl(j, SHM_STAT, &shmseg);
		if (shmid < 0 || (id > -1 && shmid != id)) {
			continue;
		}

		i++;
		p->shm_perm.key = ipcp->KEY;
		p->shm_perm.id = shmid;
		p->shm_perm.mode = ipcp->mode;
		p->shm_segsz = shmseg.shm_segsz;
		p->shm_cprid = shmseg.shm_cpid;
		p->shm_lprid = shmseg.shm_lpid;
		p->shm_nattch = shmseg.shm_nattch;
		p->shm_perm.uid = ipcp->uid;
		p->shm_perm.gid = ipcp->gid;
		p->shm_perm.cuid = ipcp->cuid;
		p->shm_perm.cgid = ipcp->cuid;
		p->shm_atim = shmseg.shm_atime;
		p->shm_dtim = shmseg.shm_dtime;
		p->shm_ctim = shmseg.shm_ctime;
		p->shm_rss = 0xdead;
		p->shm_swp = 0xdead;

		if (id < 0) {
			p->next = xcalloc(1, sizeof(struct shm_data));
			p = p->next;
			p->next = NULL;
		} else
			break;
	}

	if (i == 0)
		free(*shmds);
	return i;
}

void ipc_shm_free_info(struct shm_data *shmds)
{
	while (shmds) {
		struct shm_data *next = shmds->next;
		free(shmds);
		shmds = next;
	}
}

static void get_sem_elements(struct sem_data *p)
{
	size_t i;

	if (!p || !p->sem_nsems || p->sem_perm.id < 0)
		return;

	p->elements = xcalloc(p->sem_nsems, sizeof(struct sem_elem));

	for (i = 0; i < p->sem_nsems; i++) {
		struct sem_elem *e = &p->elements[i];
		union semun arg = { .val = 0 };

		e->semval = semctl(p->sem_perm.id, i, GETVAL, arg);
		if (e->semval < 0)
			err(EXIT_FAILURE, _("%s failed"), "semctl(GETVAL)");

		e->ncount = semctl(p->sem_perm.id, i, GETNCNT, arg);
		if (e->ncount < 0)
			err(EXIT_FAILURE, _("%s failed"), "semctl(GETNCNT)");

		e->zcount = semctl(p->sem_perm.id, i, GETZCNT, arg);
		if (e->zcount < 0)
			err(EXIT_FAILURE, _("%s failed"), "semctl(GETZCNT)");

		e->pid = semctl(p->sem_perm.id, i, GETPID, arg);
		if (e->pid < 0)
			err(EXIT_FAILURE, _("%s failed"), "semctl(GETPID)");
	}
}

int ipc_sem_get_info(int id, struct sem_data **semds)
{
	FILE *f;
	int i = 0, maxid;
	struct sem_data *p;
	struct seminfo dummy;
	union semun arg;

	p = *semds = xcalloc(1, sizeof(struct sem_data));
	p->next = NULL;

	f = fopen(_PATH_PROC_SYSV_SEM, "r");
	if (!f)
		goto sem_fallback;

	while (fgetc(f) != '\n') ;	/* skip header */

	while (feof(f) == 0) {
		if (fscanf(f,
			   "%d %d  %o %" SCNu64 " %u %u %u %u %"
			    SCNi64 " %" SCNi64 "\n",
			   &p->sem_perm.key,
			   &p->sem_perm.id,
			   &p->sem_perm.mode,
			   &p->sem_nsems,
			   &p->sem_perm.uid,
			   &p->sem_perm.gid,
			   &p->sem_perm.cuid,
			   &p->sem_perm.cgid,
			   &p->sem_otime,
			   &p->sem_ctime) != 10)
			continue;

		if (id > -1) {
			/* ID specified */
			if (id == p->sem_perm.id) {
				get_sem_elements(p);
				i = 1;
				break;
			} else
				continue;
		}

		p->next = xcalloc(1, sizeof(struct sem_data));
		p = p->next;
		p->next = NULL;
		i++;
	}

	if (i == 0)
		free(*semds);
	fclose(f);
	return i;

	/* Fallback; /proc or /sys file(s) missing. */
sem_fallback:
	arg.array = (ushort *) (void *)&dummy;
	maxid = semctl(0, 0, SEM_INFO, arg);

	for (int j = 0; j <= maxid; j++) {
		int semid;
		struct semid_ds semseg;
		struct ipc_perm *ipcp = &semseg.sem_perm;
		arg.buf = (struct semid_ds *)&semseg;

		semid = semctl(j, 0, SEM_STAT, arg);
		if (semid < 0 || (id > -1 && semid != id)) {
			continue;
		}

		i++;
		p->sem_perm.key = ipcp->KEY;
		p->sem_perm.id = semid;
		p->sem_perm.mode = ipcp->mode;
		p->sem_nsems = semseg.sem_nsems;
		p->sem_perm.uid = ipcp->uid;
		p->sem_perm.gid = ipcp->gid;
		p->sem_perm.cuid = ipcp->cuid;
		p->sem_perm.cgid = ipcp->cuid;
		p->sem_otime = semseg.sem_otime;
		p->sem_ctime = semseg.sem_ctime;

		if (id < 0) {
			p->next = xcalloc(1, sizeof(struct sem_data));
			p = p->next;
			p->next = NULL;
			i++;
		} else {
			get_sem_elements(p);
			break;
		}
	}

	if (i == 0)
		free(*semds);
	return i;
}

void ipc_sem_free_info(struct sem_data *semds)
{
	while (semds) {
		struct sem_data *next = semds->next;
		free(semds->elements);
		free(semds);
		semds = next;
	}
}

int ipc_msg_get_info(int id, struct msg_data **msgds)
{
	FILE *f;
	int i = 0, maxid;
	struct msg_data *p;
	struct msqid_ds dummy;
	struct msqid_ds msgseg;

	p = *msgds = xcalloc(1, sizeof(struct msg_data));
	p->next = NULL;

	f = fopen(_PATH_PROC_SYSV_MSG, "r");
	if (!f)
		goto msg_fallback;

	while (fgetc(f) != '\n') ;	/* skip header */

	while (feof(f) == 0) {
		if (fscanf(f,
			   "%d %d  %o  %" SCNu64 " %" SCNu64
			   " %u %u %u %u %u %u %" SCNi64 " %" SCNi64 " %" SCNi64 "\n",
			   &p->msg_perm.key,
			   &p->msg_perm.id,
			   &p->msg_perm.mode,
			   &p->q_cbytes,
			   &p->q_qnum,
			   &p->q_lspid,
			   &p->q_lrpid,
			   &p->msg_perm.uid,
			   &p->msg_perm.gid,
			   &p->msg_perm.cuid,
			   &p->msg_perm.cgid,
			   &p->q_stime,
			   &p->q_rtime,
			   &p->q_ctime) != 14)
			continue;

		if (id > -1) {
			/* ID specified */
			if (id == p->msg_perm.id) {
				if (msgctl(id, IPC_STAT, &msgseg) != -1)
					p->q_qbytes = msgseg.msg_qbytes;
				i = 1;
				break;
			} else
				continue;
		}

		p->next = xcalloc(1, sizeof(struct msg_data));
		p = p->next;
		p->next = NULL;
		i++;
	}

	if (i == 0)
		free(*msgds);
	fclose(f);
	return i;

	/* Fallback; /proc or /sys file(s) missing. */
msg_fallback:
	maxid = msgctl(0, MSG_INFO, &dummy);

	for (int j = 0; j <= maxid; j++) {
		int msgid;
		struct ipc_perm *ipcp = &msgseg.msg_perm;

		msgid = msgctl(j, MSG_STAT, &msgseg);
		if (msgid < 0 || (id > -1 && msgid != id)) {
			continue;
		}

		i++;
		p->msg_perm.key = ipcp->KEY;
		p->msg_perm.id = msgid;
		p->msg_perm.mode = ipcp->mode;
		p->q_cbytes = msgseg.msg_cbytes;
		p->q_qnum = msgseg.msg_qnum;
		p->q_lspid = msgseg.msg_lspid;
		p->q_lrpid = msgseg.msg_lrpid;
		p->msg_perm.uid = ipcp->uid;
		p->msg_perm.gid = ipcp->gid;
		p->msg_perm.cuid = ipcp->cuid;
		p->msg_perm.cgid = ipcp->cgid;
		p->q_stime = msgseg.msg_stime;
		p->q_rtime = msgseg.msg_rtime;
		p->q_ctime = msgseg.msg_ctime;
		p->q_qbytes = msgseg.msg_qbytes;

		if (id < 0) {
			p->next = xcalloc(1, sizeof(struct msg_data));
			p = p->next;
			p->next = NULL;
		} else
			break;
	}

	if (i == 0)
		free(*msgds);
	return i;
}

void ipc_msg_free_info(struct msg_data *msgds)
{
	while (msgds) {
		struct msg_data *next = msgds->next;
		free(msgds);
		msgds = next;
	}
}

void ipc_print_perms(FILE *f, struct ipc_stat *is)
{
	struct passwd *pw;
	struct group *gr;

	fprintf(f, "%-10d %-10o", is->id, is->mode & 0777);

	if ((pw = getpwuid(is->cuid)))
		fprintf(f, " %-10s", pw->pw_name);
	else
		fprintf(f, " %-10u", is->cuid);

	if ((gr = getgrgid(is->cgid)))
		fprintf(f, " %-10s", gr->gr_name);
	else
		fprintf(f, " %-10u", is->cgid);

	if ((pw = getpwuid(is->uid)))
		fprintf(f, " %-10s", pw->pw_name);
	else
		fprintf(f, " %-10u", is->uid);

	if ((gr = getgrgid(is->gid)))
		fprintf(f, " %-10s\n", gr->gr_name);
	else
		fprintf(f, " %-10u\n", is->gid);
}

void ipc_print_size(int unit, char *msg, uint64_t size, const char *end,
		    int width)
{
	char format[32];

	if (!msg)
		/* NULL */ ;
	else if (msg[strlen(msg) - 1] == '=')
		printf("%s", msg);
	else if (unit == IPC_UNIT_BYTES)
		printf(_("%s (bytes) = "), msg);
	else if (unit == IPC_UNIT_KB)
		printf(_("%s (kbytes) = "), msg);
	else
		printf("%s = ", msg);

	switch (unit) {
	case IPC_UNIT_DEFAULT:
	case IPC_UNIT_BYTES:
		sprintf(format, "%%%dju", width);
		printf(format, size);
		break;
	case IPC_UNIT_KB:
		sprintf(format, "%%%dju", width);
		printf(format, size / 1024);
		break;
	case IPC_UNIT_HUMAN:
	{
		char *tmp;
		sprintf(format, "%%%ds", width);
		printf(format, (tmp = size_to_human_string(SIZE_SUFFIX_1LETTER, size)));
		free(tmp);
		break;
	}
	default:
		/* impossible occurred */
		abort();
	}

	if (end)
		printf("%s", end);
}
Commit	Line	Data
058e8154 SK	1	#include <inttypes.h>
058e8154 SK	2
e5995acd	3	#include "c.h"
b5504a3d	4	#include "nls.h"
058e8154	5	#include "xalloc.h"
e5995acd SK	6	#include "path.h"
	7	#include "pathnames.h"
	8	#include "ipcutils.h"
56692a67	9	#include "strutils.h"
e5995acd SK	10
	11	#ifndef SEMVMX
	12	# define SEMVMX 32767 /* <= 32767 semaphore maximum value */
	13	#endif
	14	#ifndef SHMMIN
	15	# define SHMMIN 1 /* min shared segment size in bytes */
	16	#endif
	17
	18
	19	int ipc_msg_get_limits(struct ipc_limits *lim)
	20	{
77845f7b RM	21	if (access(_PATH_PROC_IPC_MSGMNI, F_OK) == 0 &&
	22	access(_PATH_PROC_IPC_MSGMNB, F_OK) == 0 &&
	23	access(_PATH_PROC_IPC_MSGMAX, F_OK) == 0) {
e5995acd	24
f09a98de KZ	25	ul_path_read_s32(NULL, &lim->msgmni, _PATH_PROC_IPC_MSGMNI);
	26	ul_path_read_s32(NULL, &lim->msgmnb, _PATH_PROC_IPC_MSGMNB);
	27	ul_path_read_u64(NULL, &lim->msgmax, _PATH_PROC_IPC_MSGMAX);
e5995acd SK	28	} else {
	29	struct msginfo msginfo;
	30
	31	if (msgctl(0, IPC_INFO, (struct msqid_ds *) &msginfo) < 0)
	32	return 1;
	33	lim->msgmni = msginfo.msgmni;
	34	lim->msgmnb = msginfo.msgmnb;
	35	lim->msgmax = msginfo.msgmax;
	36	}
	37
	38	return 0;
	39	}
	40
	41	int ipc_sem_get_limits(struct ipc_limits *lim)
	42	{
	43	FILE *f;
	44	int rc = 0;
	45
	46	lim->semvmx = SEMVMX;
	47
f09a98de	48	f = fopen(_PATH_PROC_IPC_SEM, "r");
e5995acd SK	49	if (f) {
	50	rc = fscanf(f, "%d\t%d\t%d\t%d",
	51	&lim->semmsl, &lim->semmns, &lim->semopm, &lim->semmni);
	52	fclose(f);
e5995acd SK	53	}
e5995acd SK	54
53650755	55	if (rc != 4) {
60ee341b	56	struct seminfo seminfo = { .semmni = 0 };
e5995acd SK	57	union semun arg = { .array = (ushort *) &seminfo };
	58
	59	if (semctl(0, 0, IPC_INFO, arg) < 0)
	60	return 1;
	61	lim->semmni = seminfo.semmni;
	62	lim->semmsl = seminfo.semmsl;
	63	lim->semmns = seminfo.semmns;
	64	lim->semopm = seminfo.semopm;
	65	}
	66
	67	return 0;
	68	}
	69
	70	int ipc_shm_get_limits(struct ipc_limits *lim)
	71	{
	72	lim->shmmin = SHMMIN;
	73
77845f7b RM	74	if (access(_PATH_PROC_IPC_SHMALL, F_OK) == 0 &&
	75	access(_PATH_PROC_IPC_SHMMAX, F_OK) == 0 &&
	76	access(_PATH_PROC_IPC_SHMMNI, F_OK) == 0) {
e5995acd	77
f09a98de KZ	78	ul_path_read_u64(NULL, &lim->shmall, _PATH_PROC_IPC_SHMALL);
	79	ul_path_read_u64(NULL, &lim->shmmax, _PATH_PROC_IPC_SHMMAX);
	80	ul_path_read_u64(NULL, &lim->shmmni, _PATH_PROC_IPC_SHMMNI);
e5995acd SK	81
e5995acd SK	82	} else {
929c2575 KZ	83	struct shminfo *shminfo;
929c2575 KZ	84	struct shmid_ds shmbuf;
e5995acd	85
929c2575	86	if (shmctl(0, IPC_INFO, &shmbuf) < 0)
e5995acd	87	return 1;
929c2575 KZ	88	shminfo = (struct shminfo *) &shmbuf;
	89	lim->shmmni = shminfo->shmmni;
	90	lim->shmall = shminfo->shmall;
	91	lim->shmmax = shminfo->shmmax;
e5995acd SK	92	}
	93
	94	return 0;
	95	}
058e8154	96
61e14b4a	97	int ipc_shm_get_info(int id, struct shm_data **shmds)
058e8154 SK	98	{
058e8154 SK	99	FILE *f;
7d8ea9df	100	int i = 0, maxid;
97fab80e	101	char buf[BUFSIZ];
058e8154	102	struct shm_data *p;
3ce29d6d	103	struct shmid_ds dummy;
058e8154	104
7d94d1ce	105	p = *shmds = xcalloc(1, sizeof(struct shm_data));
058e8154 SK	106	p->next = NULL;
058e8154 SK	107
f09a98de	108	f = fopen(_PATH_PROC_SYSV_SHM, "r");
058e8154	109	if (!f)
9bcacde1	110	goto shm_fallback;
058e8154 SK	111
	112	while (fgetc(f) != '\n'); /* skip header */
	113
97fab80e	114	while (fgets(buf, sizeof(buf), f) != NULL) {
73f4f3d9 RM	115	/* scan for the first 14-16 columns (e.g. Linux 2.6.32 has 14) */
	116	p->shm_rss = 0xdead;
	117	p->shm_swp = 0xdead;
97fab80e	118	if (sscanf(buf,
058e8154	119	"%d %d %o %"SCNu64 " %u %u "
278e7203	120	"%"SCNu64 " %u %u %u %u %"SCNi64 " %"SCNi64 " %"SCNi64
058e8154 SK	121	" %"SCNu64 " %"SCNu64 "\n",
	122	&p->shm_perm.key,
	123	&p->shm_perm.id,
	124	&p->shm_perm.mode,
	125	&p->shm_segsz,
	126	&p->shm_cprid,
	127	&p->shm_lprid,
	128	&p->shm_nattch,
	129	&p->shm_perm.uid,
	130	&p->shm_perm.gid,
	131	&p->shm_perm.cuid,
	132	&p->shm_perm.cgid,
	133	&p->shm_atim,
	134	&p->shm_dtim,
	135	&p->shm_ctim,
	136	&p->shm_rss,
73f4f3d9	137	&p->shm_swp) < 14)
9e930041	138	continue; /* invalid line, skipped */
058e8154	139
7d94d1ce KZ	140	if (id > -1) {
	141	/* ID specified */
	142	if (id == p->shm_perm.id) {
	143	i = 1;
	144	break;
	145	} else
	146	continue;
058e8154	147	}
7d94d1ce KZ	148
	149	p->next = xcalloc(1, sizeof(struct shm_data));
	150	p = p->next;
	151	p->next = NULL;
	152	i++;
058e8154 SK	153	}
	154
	155	if (i == 0)
	156	free(*shmds);
	157	fclose(f);
	158	return i;
	159
	160	/* Fallback; /proc or /sys file(s) missing. */
9bcacde1	161	shm_fallback:
3ce29d6d	162	maxid = shmctl(0, SHM_INFO, &dummy);
61e14b4a	163
b507e426	164	for (int j = 0; j <= maxid; j++) {
058e8154 SK	165	int shmid;
	166	struct shmid_ds shmseg;
	167	struct ipc_perm *ipcp = &shmseg.shm_perm;
	168
b507e426 RM	169	shmid = shmctl(j, SHM_STAT, &shmseg);
b507e426 RM	170	if (shmid < 0 \|\| (id > -1 && shmid != id)) {
058e8154 SK	171	continue;
	172	}
	173
b507e426	174	i++;
058e8154 SK	175	p->shm_perm.key = ipcp->KEY;
	176	p->shm_perm.id = shmid;
	177	p->shm_perm.mode = ipcp->mode;
	178	p->shm_segsz = shmseg.shm_segsz;
	179	p->shm_cprid = shmseg.shm_cpid;
	180	p->shm_lprid = shmseg.shm_lpid;
	181	p->shm_nattch = shmseg.shm_nattch;
	182	p->shm_perm.uid = ipcp->uid;
	183	p->shm_perm.gid = ipcp->gid;
	184	p->shm_perm.cuid = ipcp->cuid;
	185	p->shm_perm.cgid = ipcp->cuid;
	186	p->shm_atim = shmseg.shm_atime;
	187	p->shm_dtim = shmseg.shm_dtime;
	188	p->shm_ctim = shmseg.shm_ctime;
	189	p->shm_rss = 0xdead;
	190	p->shm_swp = 0xdead;
	191
	192	if (id < 0) {
7d94d1ce	193	p->next = xcalloc(1, sizeof(struct shm_data));
058e8154 SK	194	p = p->next;
058e8154 SK	195	p->next = NULL;
058e8154	196	} else
b507e426	197	break;
058e8154 SK	198	}
058e8154 SK	199
b507e426 RM	200	if (i == 0)
b507e426 RM	201	free(*shmds);
058e8154 SK	202	return i;
	203	}
	204
	205	void ipc_shm_free_info(struct shm_data *shmds)
	206	{
	207	while (shmds) {
	208	struct shm_data *next = shmds->next;
	209	free(shmds);
	210	shmds = next;
	211	}
	212	}
	213
b5504a3d SK	214	static void get_sem_elements(struct sem_data *p)
	215	{
	216	size_t i;
	217
	218	if (!p \|\| !p->sem_nsems \|\| p->sem_perm.id < 0)
	219	return;
	220
	221	p->elements = xcalloc(p->sem_nsems, sizeof(struct sem_elem));
	222
	223	for (i = 0; i < p->sem_nsems; i++) {
	224	struct sem_elem *e = &p->elements[i];
	225	union semun arg = { .val = 0 };
	226
	227	e->semval = semctl(p->sem_perm.id, i, GETVAL, arg);
	228	if (e->semval < 0)
	229	err(EXIT_FAILURE, _("%s failed"), "semctl(GETVAL)");
	230
	231	e->ncount = semctl(p->sem_perm.id, i, GETNCNT, arg);
	232	if (e->ncount < 0)
	233	err(EXIT_FAILURE, _("%s failed"), "semctl(GETNCNT)");
	234
	235	e->zcount = semctl(p->sem_perm.id, i, GETZCNT, arg);
	236	if (e->zcount < 0)
	237	err(EXIT_FAILURE, _("%s failed"), "semctl(GETZCNT)");
	238
	239	e->pid = semctl(p->sem_perm.id, i, GETPID, arg);
	240	if (e->pid < 0)
	241	err(EXIT_FAILURE, _("%s failed"), "semctl(GETPID)");
	242	}
	243	}
	244
1e2418a2 SK	245	int ipc_sem_get_info(int id, struct sem_data **semds)
	246	{
	247	FILE *f;
7d8ea9df	248	int i = 0, maxid;
1e2418a2 SK	249	struct sem_data *p;
	250	struct seminfo dummy;
	251	union semun arg;
	252
	253	p = *semds = xcalloc(1, sizeof(struct sem_data));
	254	p->next = NULL;
	255
f09a98de	256	f = fopen(_PATH_PROC_SYSV_SEM, "r");
1e2418a2 SK	257	if (!f)
	258	goto sem_fallback;
	259
	260	while (fgetc(f) != '\n') ; /* skip header */
	261
	262	while (feof(f) == 0) {
	263	if (fscanf(f,
278e7203 KZ	264	"%d %d %o %" SCNu64 " %u %u %u %u %"
278e7203 KZ	265	SCNi64 " %" SCNi64 "\n",
1e2418a2 SK	266	&p->sem_perm.key,
	267	&p->sem_perm.id,
	268	&p->sem_perm.mode,
	269	&p->sem_nsems,
	270	&p->sem_perm.uid,
	271	&p->sem_perm.gid,
	272	&p->sem_perm.cuid,
	273	&p->sem_perm.cgid,
	274	&p->sem_otime,
	275	&p->sem_ctime) != 10)
	276	continue;
	277
	278	if (id > -1) {
	279	/* ID specified */
	280	if (id == p->sem_perm.id) {
b5504a3d	281	get_sem_elements(p);
1e2418a2 SK	282	i = 1;
	283	break;
	284	} else
	285	continue;
	286	}
	287
	288	p->next = xcalloc(1, sizeof(struct sem_data));
	289	p = p->next;
	290	p->next = NULL;
	291	i++;
	292	}
	293
	294	if (i == 0)
	295	free(*semds);
	296	fclose(f);
	297	return i;
	298
	299	/* Fallback; /proc or /sys file(s) missing. */
9bcacde1	300	sem_fallback:
1e2418a2 SK	301	arg.array = (ushort ) (void )&dummy;
1e2418a2 SK	302	maxid = semctl(0, 0, SEM_INFO, arg);
1e2418a2	303
5078a0d3	304	for (int j = 0; j <= maxid; j++) {
1e2418a2 SK	305	int semid;
	306	struct semid_ds semseg;
	307	struct ipc_perm *ipcp = &semseg.sem_perm;
	308	arg.buf = (struct semid_ds *)&semseg;
	309
5078a0d3 RM	310	semid = semctl(j, 0, SEM_STAT, arg);
5078a0d3 RM	311	if (semid < 0 \|\| (id > -1 && semid != id)) {
1e2418a2 SK	312	continue;
	313	}
	314
5078a0d3	315	i++;
1e2418a2 SK	316	p->sem_perm.key = ipcp->KEY;
	317	p->sem_perm.id = semid;
	318	p->sem_perm.mode = ipcp->mode;
	319	p->sem_nsems = semseg.sem_nsems;
	320	p->sem_perm.uid = ipcp->uid;
	321	p->sem_perm.gid = ipcp->gid;
	322	p->sem_perm.cuid = ipcp->cuid;
	323	p->sem_perm.cgid = ipcp->cuid;
	324	p->sem_otime = semseg.sem_otime;
	325	p->sem_ctime = semseg.sem_ctime;
	326
	327	if (id < 0) {
	328	p->next = xcalloc(1, sizeof(struct sem_data));
	329	p = p->next;
	330	p->next = NULL;
	331	i++;
b5504a3d SK	332	} else {
b5504a3d SK	333	get_sem_elements(p);
5078a0d3	334	break;
b5504a3d	335	}
1e2418a2 SK	336	}
1e2418a2 SK	337
5078a0d3 RM	338	if (i == 0)
5078a0d3 RM	339	free(*semds);
1e2418a2 SK	340	return i;
	341	}
	342
	343	void ipc_sem_free_info(struct sem_data *semds)
	344	{
	345	while (semds) {
	346	struct sem_data *next = semds->next;
b5504a3d	347	free(semds->elements);
1e2418a2 SK	348	free(semds);
	349	semds = next;
	350	}
	351	}
	352
35118dfc SK	353	int ipc_msg_get_info(int id, struct msg_data **msgds)
	354	{
	355	FILE *f;
7d8ea9df	356	int i = 0, maxid;
35118dfc SK	357	struct msg_data *p;
35118dfc SK	358	struct msqid_ds dummy;
2bd2f79d	359	struct msqid_ds msgseg;
35118dfc SK	360
	361	p = *msgds = xcalloc(1, sizeof(struct msg_data));
	362	p->next = NULL;
	363
f09a98de	364	f = fopen(_PATH_PROC_SYSV_MSG, "r");
35118dfc SK	365	if (!f)
	366	goto msg_fallback;
	367
	368	while (fgetc(f) != '\n') ; /* skip header */
	369
	370	while (feof(f) == 0) {
	371	if (fscanf(f,
278e7203 KZ	372	"%d %d %o %" SCNu64 " %" SCNu64
278e7203 KZ	373	" %u %u %u %u %u %u %" SCNi64 " %" SCNi64 " %" SCNi64 "\n",
35118dfc SK	374	&p->msg_perm.key,
	375	&p->msg_perm.id,
	376	&p->msg_perm.mode,
	377	&p->q_cbytes,
	378	&p->q_qnum,
	379	&p->q_lspid,
	380	&p->q_lrpid,
	381	&p->msg_perm.uid,
	382	&p->msg_perm.gid,
	383	&p->msg_perm.cuid,
	384	&p->msg_perm.cgid,
	385	&p->q_stime,
	386	&p->q_rtime,
	387	&p->q_ctime) != 14)
	388	continue;
	389
	390	if (id > -1) {
	391	/* ID specified */
	392	if (id == p->msg_perm.id) {
2bd2f79d SK	393	if (msgctl(id, IPC_STAT, &msgseg) != -1)
2bd2f79d SK	394	p->q_qbytes = msgseg.msg_qbytes;
35118dfc SK	395	i = 1;
	396	break;
	397	} else
	398	continue;
	399	}
	400
	401	p->next = xcalloc(1, sizeof(struct msg_data));
	402	p = p->next;
	403	p->next = NULL;
	404	i++;
	405	}
	406
	407	if (i == 0)
	408	free(*msgds);
	409	fclose(f);
	410	return i;
	411
	412	/* Fallback; /proc or /sys file(s) missing. */
9bcacde1	413	msg_fallback:
08e7d10b	414	maxid = msgctl(0, MSG_INFO, &dummy);
35118dfc	415
08e7d10b	416	for (int j = 0; j <= maxid; j++) {
35118dfc	417	int msgid;
35118dfc SK	418	struct ipc_perm *ipcp = &msgseg.msg_perm;
35118dfc SK	419
08e7d10b RM	420	msgid = msgctl(j, MSG_STAT, &msgseg);
08e7d10b RM	421	if (msgid < 0 \|\| (id > -1 && msgid != id)) {
35118dfc SK	422	continue;
	423	}
	424
08e7d10b	425	i++;
35118dfc SK	426	p->msg_perm.key = ipcp->KEY;
	427	p->msg_perm.id = msgid;
	428	p->msg_perm.mode = ipcp->mode;
	429	p->q_cbytes = msgseg.msg_cbytes;
	430	p->q_qnum = msgseg.msg_qnum;
	431	p->q_lspid = msgseg.msg_lspid;
	432	p->q_lrpid = msgseg.msg_lrpid;
	433	p->msg_perm.uid = ipcp->uid;
	434	p->msg_perm.gid = ipcp->gid;
	435	p->msg_perm.cuid = ipcp->cuid;
	436	p->msg_perm.cgid = ipcp->cgid;
	437	p->q_stime = msgseg.msg_stime;
	438	p->q_rtime = msgseg.msg_rtime;
	439	p->q_ctime = msgseg.msg_ctime;
2bd2f79d	440	p->q_qbytes = msgseg.msg_qbytes;
35118dfc SK	441
	442	if (id < 0) {
	443	p->next = xcalloc(1, sizeof(struct msg_data));
	444	p = p->next;
	445	p->next = NULL;
35118dfc	446	} else
08e7d10b	447	break;
35118dfc SK	448	}
35118dfc SK	449
08e7d10b RM	450	if (i == 0)
08e7d10b RM	451	free(*msgds);
35118dfc SK	452	return i;
	453	}
	454
	455	void ipc_msg_free_info(struct msg_data *msgds)
	456	{
	457	while (msgds) {
	458	struct msg_data *next = msgds->next;
	459	free(msgds);
	460	msgds = next;
	461	}
	462	}
	463
058e8154 SK	464	void ipc_print_perms(FILE f, struct ipc_stat is)
	465	{
	466	struct passwd *pw;
	467	struct group *gr;
	468
	469	fprintf(f, "%-10d %-10o", is->id, is->mode & 0777);
	470
	471	if ((pw = getpwuid(is->cuid)))
	472	fprintf(f, " %-10s", pw->pw_name);
	473	else
	474	fprintf(f, " %-10u", is->cuid);
	475
	476	if ((gr = getgrgid(is->cgid)))
	477	fprintf(f, " %-10s", gr->gr_name);
	478	else
	479	fprintf(f, " %-10u", is->cgid);
	480
	481	if ((pw = getpwuid(is->uid)))
	482	fprintf(f, " %-10s", pw->pw_name);
	483	else
	484	fprintf(f, " %-10u", is->uid);
	485
	486	if ((gr = getgrgid(is->gid)))
	487	fprintf(f, " %-10s\n", gr->gr_name);
	488	else
	489	fprintf(f, " %-10u\n", is->gid);
	490	}
56692a67	491
873e7a59	492	void ipc_print_size(int unit, char msg, uint64_t size, const char end,
56692a67 SK	493	int width)
56692a67 SK	494	{
873e7a59	495	char format[32];
56692a67 SK	496
	497	if (!msg)
	498	/* NULL */ ;
	499	else if (msg[strlen(msg) - 1] == '=')
	500	printf("%s", msg);
	501	else if (unit == IPC_UNIT_BYTES)
	502	printf(_("%s (bytes) = "), msg);
	503	else if (unit == IPC_UNIT_KB)
	504	printf(_("%s (kbytes) = "), msg);
	505	else
	506	printf("%s = ", msg);
	507
	508	switch (unit) {
	509	case IPC_UNIT_DEFAULT:
	510	case IPC_UNIT_BYTES:
873e7a59	511	sprintf(format, "%%%dju", width);
56692a67 SK	512	printf(format, size);
	513	break;
	514	case IPC_UNIT_KB:
873e7a59	515	sprintf(format, "%%%dju", width);
56692a67 SK	516	printf(format, size / 1024);
	517	break;
	518	case IPC_UNIT_HUMAN:
9d4f78ef KZ	519	{
9d4f78ef KZ	520	char *tmp;
56692a67	521	sprintf(format, "%%%ds", width);
9d4f78ef KZ	522	printf(format, (tmp = size_to_human_string(SIZE_SUFFIX_1LETTER, size)));
9d4f78ef KZ	523	free(tmp);
56692a67	524	break;
9d4f78ef	525	}
56692a67 SK	526	default:
	527	/* impossible occurred */
	528	abort();
	529	}
	530
	531	if (end)
	532	printf("%s", end);
	533	}