Adding upstream version 2.36.1.upstream/2.36.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 761 insertions, 0 deletions

diff --git a/sys-utils/lsmem.c b/sys-utils/lsmem.c
new file mode 100644
index 0000000..00f9d76
--- /dev/null
+++ b/sys-utils/lsmem.c
@@ -0,0 +1,761 @@
+/*
+ * lsmem - Show memory configuration
+ *
+ * Copyright IBM Corp. 2016
+ * Copyright (C) 2016 Karel Zak <kzak@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include <c.h>
+#include <nls.h>
+#include <path.h>
+#include <strutils.h>
+#include <closestream.h>
+#include <xalloc.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <assert.h>
+#include <optutils.h>
+#include <libsmartcols.h>
+
+#define _PATH_SYS_MEMORY		"/sys/devices/system/memory"
+
+#define MEMORY_STATE_ONLINE		0
+#define MEMORY_STATE_OFFLINE		1
+#define MEMORY_STATE_GOING_OFFLINE	2
+#define MEMORY_STATE_UNKNOWN		3
+
+enum zone_id {
+	ZONE_DMA = 0,
+	ZONE_DMA32,
+	ZONE_NORMAL,
+	ZONE_HIGHMEM,
+	ZONE_MOVABLE,
+	ZONE_DEVICE,
+	ZONE_NONE,
+	ZONE_UNKNOWN,
+	MAX_NR_ZONES,
+};
+
+struct memory_block {
+	uint64_t	index;
+	uint64_t	count;
+	int		state;
+	int		node;
+	int		nr_zones;
+	int		zones[MAX_NR_ZONES];
+	unsigned int	removable:1;
+};
+
+struct lsmem {
+	struct path_cxt		*sysmem;		/* _PATH_SYS_MEMORY directory handler */
+	struct dirent		**dirs;
+	int			ndirs;
+	struct memory_block	*blocks;
+	int			nblocks;
+	uint64_t		block_size;
+	uint64_t		mem_online;
+	uint64_t		mem_offline;
+
+	struct libscols_table	*table;
+	unsigned int		have_nodes : 1,
+				raw : 1,
+				export : 1,
+				json : 1,
+				noheadings : 1,
+				summary : 1,
+				list_all : 1,
+				bytes : 1,
+				want_summary : 1,
+				want_table : 1,
+				split_by_node : 1,
+				split_by_state : 1,
+				split_by_removable : 1,
+				split_by_zones : 1,
+				have_zones : 1;
+};
+
+
+enum {
+	COL_RANGE,
+	COL_SIZE,
+	COL_STATE,
+	COL_REMOVABLE,
+	COL_BLOCK,
+	COL_NODE,
+	COL_ZONES,
+};
+
+static char *zone_names[] = {
+	[ZONE_DMA]	= "DMA",
+	[ZONE_DMA32]	= "DMA32",
+	[ZONE_NORMAL]	= "Normal",
+	[ZONE_HIGHMEM]	= "Highmem",
+	[ZONE_MOVABLE]	= "Movable",
+	[ZONE_DEVICE]	= "Device",
+	[ZONE_NONE]	= "None",	/* block contains more than one zone, can't be offlined */
+	[ZONE_UNKNOWN]	= "Unknown",
+};
+
+/* column names */
+struct coldesc {
+	const char	*name;		/* header */
+	double		whint;		/* width hint (N < 1 is in percent of termwidth) */
+	int		flags;		/* SCOLS_FL_* */
+	const char      *help;
+};
+
+/* columns descriptions */
+static struct coldesc coldescs[] = {
+	[COL_RANGE]	= { "RANGE", 0, 0, N_("start and end address of the memory range")},
+	[COL_SIZE]	= { "SIZE", 5, SCOLS_FL_RIGHT, N_("size of the memory range")},
+	[COL_STATE]	= { "STATE", 0, SCOLS_FL_RIGHT, N_("online status of the memory range")},
+	[COL_REMOVABLE]	= { "REMOVABLE", 0, SCOLS_FL_RIGHT, N_("memory is removable")},
+	[COL_BLOCK]	= { "BLOCK", 0, SCOLS_FL_RIGHT, N_("memory block number or blocks range")},
+	[COL_NODE]	= { "NODE", 0, SCOLS_FL_RIGHT, N_("numa node of memory")},
+	[COL_ZONES]	= { "ZONES", 0, SCOLS_FL_RIGHT, N_("valid zones for the memory range")},
+};
+
+/* columns[] array specifies all currently wanted output column. The columns
+ * are defined by coldescs[] array and you can specify (on command line) each
+ * column twice. That's enough, dynamically allocated array of the columns is
+ * unnecessary overkill and over-engineering in this case */
+static int columns[ARRAY_SIZE(coldescs) * 2];
+static size_t ncolumns;
+
+static inline size_t err_columns_index(size_t arysz, size_t idx)
+{
+	if (idx >= arysz)
+		errx(EXIT_FAILURE, _("too many columns specified, "
+				     "the limit is %zu columns"),
+				arysz - 1);
+	return idx;
+}
+
+/*
+ * name must be null-terminated
+ */
+static int zone_name_to_id(const char *name)
+{
+	size_t i;
+
+	for (i = 0; i < ARRAY_SIZE(zone_names); i++) {
+		if (!strcasecmp(name, zone_names[i]))
+			return i;
+	}
+	return ZONE_UNKNOWN;
+}
+
+#define add_column(ary, n, id)	\
+		((ary)[ err_columns_index(ARRAY_SIZE(ary), (n)) ] = (id))
+
+static int column_name_to_id(const char *name, size_t namesz)
+{
+	size_t i;
+
+	for (i = 0; i < ARRAY_SIZE(coldescs); i++) {
+		const char *cn = coldescs[i].name;
+
+		if (!strncasecmp(name, cn, namesz) && !*(cn + namesz))
+			return i;
+	}
+	warnx(_("unknown column: %s"), name);
+	return -1;
+}
+
+static inline int get_column_id(int num)
+{
+	assert(num >= 0);
+	assert((size_t) num < ncolumns);
+	assert(columns[num] < (int) ARRAY_SIZE(coldescs));
+
+	return columns[num];
+}
+
+static inline struct coldesc *get_column_desc(int num)
+{
+	return &coldescs[ get_column_id(num) ];
+}
+
+static inline void reset_split_policy(struct lsmem *l, int enable)
+{
+	l->split_by_state = enable;
+	l->split_by_node = enable;
+	l->split_by_removable = enable;
+	l->split_by_zones = enable;
+}
+
+static void set_split_policy(struct lsmem *l, int cols[], size_t ncols)
+{
+	size_t i;
+
+	reset_split_policy(l, 0);
+
+	for (i = 0; i < ncols; i++) {
+		switch (cols[i]) {
+		case COL_STATE:
+			l->split_by_state = 1;
+			break;
+		case COL_NODE:
+			l->split_by_node = 1;
+			break;
+		case COL_REMOVABLE:
+			l->split_by_removable = 1;
+			break;
+		case COL_ZONES:
+			l->split_by_zones = 1;
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+static void add_scols_line(struct lsmem *lsmem, struct memory_block *blk)
+{
+	size_t i;
+	struct libscols_line *line;
+
+	line = scols_table_new_line(lsmem->table, NULL);
+	if (!line)
+		err_oom();
+
+	for (i = 0; i < ncolumns; i++) {
+		char *str = NULL;
+
+		switch (get_column_id(i)) {
+		case COL_RANGE:
+		{
+			uint64_t start = blk->index * lsmem->block_size;
+			uint64_t size = blk->count * lsmem->block_size;
+			xasprintf(&str, "0x%016"PRIx64"-0x%016"PRIx64, start, start + size - 1);
+			break;
+		}
+		case COL_SIZE:
+			if (lsmem->bytes)
+				xasprintf(&str, "%"PRId64, (uint64_t) blk->count * lsmem->block_size);
+			else
+				str = size_to_human_string(SIZE_SUFFIX_1LETTER,
+						(uint64_t) blk->count * lsmem->block_size);
+			break;
+		case COL_STATE:
+			str = xstrdup(
+				blk->state == MEMORY_STATE_ONLINE ? _("online") :
+				blk->state == MEMORY_STATE_OFFLINE ? _("offline") :
+				blk->state == MEMORY_STATE_GOING_OFFLINE ? _("on->off") :
+				"?");
+			break;
+		case COL_REMOVABLE:
+			if (blk->state == MEMORY_STATE_ONLINE)
+				str = xstrdup(blk->removable ? _("yes") : _("no"));
+			break;
+		case COL_BLOCK:
+			if (blk->count == 1)
+				xasprintf(&str, "%"PRId64, blk->index);
+			else
+				xasprintf(&str, "%"PRId64"-%"PRId64,
+					 blk->index, blk->index + blk->count - 1);
+			break;
+		case COL_NODE:
+			if (lsmem->have_nodes)
+				xasprintf(&str, "%d", blk->node);
+			break;
+		case COL_ZONES:
+			if (lsmem->have_zones) {
+				char valid_zones[BUFSIZ];
+				int j, zone_id;
+
+				valid_zones[0] = '\0';
+				for (j = 0; j < blk->nr_zones; j++) {
+					zone_id = blk->zones[j];
+					if (strlen(valid_zones) +
+					    strlen(zone_names[zone_id]) > BUFSIZ - 2)
+						break;
+					strcat(valid_zones, zone_names[zone_id]);
+					if (j + 1 < blk->nr_zones)
+						strcat(valid_zones, "/");
+				}
+				str = xstrdup(valid_zones);
+			}
+			break;
+		}
+
+		if (str && scols_line_refer_data(line, i, str) != 0)
+			err_oom();
+	}
+}
+
+static void fill_scols_table(struct lsmem *lsmem)
+{
+	int i;
+
+	for (i = 0; i < lsmem->nblocks; i++)
+		add_scols_line(lsmem, &lsmem->blocks[i]);
+}
+
+static void print_summary(struct lsmem *lsmem)
+{
+	if (lsmem->bytes) {
+		printf("%-23s %15"PRId64"\n",_("Memory block size:"), lsmem->block_size);
+		printf("%-23s %15"PRId64"\n",_("Total online memory:"), lsmem->mem_online);
+		printf("%-23s %15"PRId64"\n",_("Total offline memory:"), lsmem->mem_offline);
+	} else {
+		char *p;
+
+		if ((p = size_to_human_string(SIZE_SUFFIX_1LETTER, lsmem->block_size)))
+			printf("%-23s %5s\n",_("Memory block size:"), p);
+		free(p);
+
+		if ((p = size_to_human_string(SIZE_SUFFIX_1LETTER, lsmem->mem_online)))
+			printf("%-23s %5s\n",_("Total online memory:"), p);
+		free(p);
+
+		if ((p = size_to_human_string(SIZE_SUFFIX_1LETTER, lsmem->mem_offline)))
+			printf("%-23s %5s\n",_("Total offline memory:"), p);
+		free(p);
+	}
+}
+
+static int memory_block_get_node(struct lsmem *lsmem, char *name)
+{
+	struct dirent *de;
+	DIR *dir;
+	int node;
+
+	dir = ul_path_opendir(lsmem->sysmem, name);
+	if (!dir)
+		err(EXIT_FAILURE, _("Failed to open %s"), name);
+
+	node = -1;
+	while ((de = readdir(dir)) != NULL) {
+		if (strncmp("node", de->d_name, 4) != 0)
+			continue;
+		if (!isdigit_string(de->d_name + 4))
+			continue;
+		node = strtol(de->d_name + 4, NULL, 10);
+		break;
+	}
+	closedir(dir);
+	return node;
+}
+
+static void memory_block_read_attrs(struct lsmem *lsmem, char *name,
+				    struct memory_block *blk)
+{
+	char *line = NULL;
+	int i, x = 0;
+
+	memset(blk, 0, sizeof(*blk));
+
+	blk->count = 1;
+	blk->state = MEMORY_STATE_UNKNOWN;
+	blk->index = strtoumax(name + 6, NULL, 10); /* get <num> of "memory<num>" */
+
+	if (ul_path_readf_s32(lsmem->sysmem, &x, "%s/removable", name) == 0)
+		blk->removable = x == 1;
+
+	if (ul_path_readf_string(lsmem->sysmem, &line, "%s/state", name) > 0) {
+		if (strcmp(line, "offline") == 0)
+			blk->state = MEMORY_STATE_OFFLINE;
+		else if (strcmp(line, "online") == 0)
+			blk->state = MEMORY_STATE_ONLINE;
+		else if (strcmp(line, "going-offline") == 0)
+			blk->state = MEMORY_STATE_GOING_OFFLINE;
+		free(line);
+	}
+
+	if (lsmem->have_nodes)
+		blk->node = memory_block_get_node(lsmem, name);
+
+	blk->nr_zones = 0;
+	if (lsmem->have_zones &&
+	    ul_path_readf_string(lsmem->sysmem, &line, "%s/valid_zones", name) > 0) {
+
+		char *token = strtok(line, " ");
+
+		for (i = 0; token && i < MAX_NR_ZONES; i++) {
+			blk->zones[i] = zone_name_to_id(token);
+			blk->nr_zones++;
+			token = strtok(NULL, " ");
+		}
+
+		free(line);
+	}
+}
+
+static int is_mergeable(struct lsmem *lsmem, struct memory_block *blk)
+{
+	struct memory_block *curr;
+	int i;
+
+	if (!lsmem->nblocks)
+		return 0;
+	curr = &lsmem->blocks[lsmem->nblocks - 1];
+	if (lsmem->list_all)
+		return 0;
+	if (curr->index + curr->count != blk->index)
+		return 0;
+	if (lsmem->split_by_state && curr->state != blk->state)
+		return 0;
+	if (lsmem->split_by_removable && curr->removable != blk->removable)
+		return 0;
+	if (lsmem->split_by_node && lsmem->have_nodes) {
+		if (curr->node != blk->node)
+			return 0;
+	}
+	if (lsmem->split_by_zones && lsmem->have_zones) {
+		if (curr->nr_zones != blk->nr_zones)
+			return 0;
+		for (i = 0; i < curr->nr_zones; i++) {
+			if (curr->zones[i] == ZONE_UNKNOWN ||
+			    curr->zones[i] != blk->zones[i])
+				return 0;
+		}
+	}
+	return 1;
+}
+
+static void free_info(struct lsmem *lsmem)
+{
+	int i;
+
+	if (!lsmem)
+		return;
+	free(lsmem->blocks);
+	for (i = 0; i < lsmem->ndirs; i++)
+		free(lsmem->dirs[i]);
+	free(lsmem->dirs);
+}
+
+static void read_info(struct lsmem *lsmem)
+{
+	struct memory_block blk;
+	char buf[128];
+	int i;
+
+	if (ul_path_read_buffer(lsmem->sysmem, buf, sizeof(buf), "block_size_bytes") <= 0)
+		err(EXIT_FAILURE, _("failed to read memory block size"));
+	lsmem->block_size = strtoumax(buf, NULL, 16);
+
+	for (i = 0; i < lsmem->ndirs; i++) {
+		memory_block_read_attrs(lsmem, lsmem->dirs[i]->d_name, &blk);
+		if (blk.state == MEMORY_STATE_ONLINE)
+			lsmem->mem_online += lsmem->block_size;
+		else
+			lsmem->mem_offline += lsmem->block_size;
+		if (is_mergeable(lsmem, &blk)) {
+			lsmem->blocks[lsmem->nblocks - 1].count++;
+			continue;
+		}
+		lsmem->nblocks++;
+		lsmem->blocks = xrealloc(lsmem->blocks, lsmem->nblocks * sizeof(blk));
+		*&lsmem->blocks[lsmem->nblocks - 1] = blk;
+	}
+}
+
+static int memory_block_filter(const struct dirent *de)
+{
+	if (strncmp("memory", de->d_name, 6) != 0)
+		return 0;
+	return isdigit_string(de->d_name + 6);
+}
+
+static void read_basic_info(struct lsmem *lsmem)
+{
+	char dir[PATH_MAX];
+
+	if (ul_path_access(lsmem->sysmem, F_OK, "block_size_bytes") != 0)
+		errx(EXIT_FAILURE, _("This system does not support memory blocks"));
+
+	ul_path_get_abspath(lsmem->sysmem, dir, sizeof(dir), NULL);
+
+	lsmem->ndirs = scandir(dir, &lsmem->dirs, memory_block_filter, versionsort);
+	if (lsmem->ndirs <= 0)
+		err(EXIT_FAILURE, _("Failed to read %s"), dir);
+
+	if (memory_block_get_node(lsmem, lsmem->dirs[0]->d_name) != -1)
+		lsmem->have_nodes = 1;
+
+	/* The valid_zones sysmem attribute was introduced with kernel 3.18 */
+	if (ul_path_access(lsmem->sysmem, F_OK, "memory0/valid_zones") == 0)
+		lsmem->have_zones = 1;
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+	FILE *out = stdout;
+	size_t i;
+
+	fputs(USAGE_HEADER, out);
+	fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("List the ranges of available memory with their online status.\n"), out);
+
+	fputs(USAGE_OPTIONS, out);
+	fputs(_(" -J, --json           use JSON output format\n"), out);
+	fputs(_(" -P, --pairs          use key=\"value\" output format\n"), out);
+	fputs(_(" -a, --all            list each individual memory block\n"), out);
+	fputs(_(" -b, --bytes          print SIZE in bytes rather than in human readable format\n"), out);
+	fputs(_(" -n, --noheadings     don't print headings\n"), out);
+	fputs(_(" -o, --output <list>  output columns\n"), out);
+	fputs(_("     --output-all     output all columns\n"), out);
+	fputs(_(" -r, --raw            use raw output format\n"), out);
+	fputs(_(" -S, --split <list>   split ranges by specified columns\n"), out);
+	fputs(_(" -s, --sysroot <dir>  use the specified directory as system root\n"), out);
+	fputs(_("     --summary[=when] print summary information (never,always or only)\n"), out);
+
+	fputs(USAGE_SEPARATOR, out);
+	printf(USAGE_HELP_OPTIONS(22));
+
+	fputs(USAGE_COLUMNS, out);
+	for (i = 0; i < ARRAY_SIZE(coldescs); i++)
+		fprintf(out, " %10s  %s\n", coldescs[i].name, _(coldescs[i].help));
+
+	printf(USAGE_MAN_TAIL("lsmem(1)"));
+
+	exit(EXIT_SUCCESS);
+}
+
+int main(int argc, char **argv)
+{
+	struct lsmem _lsmem = {
+			.want_table = 1,
+			.want_summary = 1
+		}, *lsmem = &_lsmem;
+
+	const char *outarg = NULL, *splitarg = NULL, *prefix = NULL;
+	int c;
+	size_t i;
+
+	enum {
+		LSMEM_OPT_SUMARRY = CHAR_MAX + 1,
+		OPT_OUTPUT_ALL
+	};
+
+	static const struct option longopts[] = {
+		{"all",		no_argument,		NULL, 'a'},
+		{"bytes",	no_argument,		NULL, 'b'},
+		{"help",	no_argument,		NULL, 'h'},
+		{"json",	no_argument,		NULL, 'J'},
+		{"noheadings",	no_argument,		NULL, 'n'},
+		{"output",	required_argument,	NULL, 'o'},
+		{"output-all",	no_argument,		NULL, OPT_OUTPUT_ALL},
+		{"pairs",	no_argument,		NULL, 'P'},
+		{"raw",		no_argument,		NULL, 'r'},
+		{"sysroot",	required_argument,	NULL, 's'},
+		{"split",       required_argument,      NULL, 'S'},
+		{"version",	no_argument,		NULL, 'V'},
+		{"summary",     optional_argument,	NULL, LSMEM_OPT_SUMARRY },
+		{NULL,		0,			NULL, 0}
+	};
+	static const ul_excl_t excl[] = {	/* rows and cols in ASCII order */
+		{ 'J', 'P', 'r' },
+		{ 'S', 'a' },
+		{ 0 }
+	};
+	int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	close_stdout_atexit();
+
+	while ((c = getopt_long(argc, argv, "abhJno:PrS:s:V", longopts, NULL)) != -1) {
+
+		err_exclusive_options(c, longopts, excl, excl_st);
+
+		switch (c) {
+		case 'a':
+			lsmem->list_all = 1;
+			break;
+		case 'b':
+			lsmem->bytes = 1;
+			break;
+		case 'J':
+			lsmem->json = 1;
+			lsmem->want_summary = 0;
+			break;
+		case 'n':
+			lsmem->noheadings = 1;
+			break;
+		case 'o':
+			outarg = optarg;
+			break;
+		case OPT_OUTPUT_ALL:
+			for (ncolumns = 0; (size_t)ncolumns < ARRAY_SIZE(coldescs); ncolumns++)
+				columns[ncolumns] = ncolumns;
+			break;
+		case 'P':
+			lsmem->export = 1;
+			lsmem->want_summary = 0;
+			break;
+		case 'r':
+			lsmem->raw = 1;
+			lsmem->want_summary = 0;
+			break;
+		case 's':
+			prefix = optarg;
+			break;
+		case 'S':
+			splitarg = optarg;
+			break;
+		case LSMEM_OPT_SUMARRY:
+			if (optarg) {
+				if (strcmp(optarg, "never") == 0)
+					lsmem->want_summary = 0;
+				else if (strcmp(optarg, "only") == 0)
+					lsmem->want_table = 0;
+				else if (strcmp(optarg, "always") == 0)
+					lsmem->want_summary = 1;
+				else
+					errx(EXIT_FAILURE, _("unsupported --summary argument"));
+			} else
+				lsmem->want_table = 0;
+			break;
+
+		case 'h':
+			usage();
+		case 'V':
+			print_version(EXIT_SUCCESS);
+		default:
+			errtryhelp(EXIT_FAILURE);
+		}
+	}
+
+	if (argc != optind) {
+		warnx(_("bad usage"));
+		errtryhelp(EXIT_FAILURE);
+	}
+
+	if (lsmem->want_table + lsmem->want_summary == 0)
+		errx(EXIT_FAILURE, _("options --{raw,json,pairs} and --summary=only are mutually exclusive"));
+
+	ul_path_init_debug();
+
+	lsmem->sysmem = ul_new_path(_PATH_SYS_MEMORY);
+	if (!lsmem->sysmem)
+		err(EXIT_FAILURE, _("failed to initialize %s handler"), _PATH_SYS_MEMORY);
+	if (prefix && ul_path_set_prefix(lsmem->sysmem, prefix) != 0)
+		err(EXIT_FAILURE, _("invalid argument to --sysroot"));
+	if (!ul_path_is_accessible(lsmem->sysmem))
+		err(EXIT_FAILURE, _("cannot open %s"), _PATH_SYS_MEMORY);
+
+	/* Shortcut to avoid scols machinery on --summary=only */
+	if (lsmem->want_table == 0 && lsmem->want_summary) {
+		read_basic_info(lsmem);
+		read_info(lsmem);
+		print_summary(lsmem);
+		return EXIT_SUCCESS;
+	}
+
+	/*
+	 * Default columns
+	 */
+	if (!ncolumns) {
+		add_column(columns, ncolumns++, COL_RANGE);
+		add_column(columns, ncolumns++, COL_SIZE);
+		add_column(columns, ncolumns++, COL_STATE);
+		add_column(columns, ncolumns++, COL_REMOVABLE);
+		add_column(columns, ncolumns++, COL_BLOCK);
+	}
+
+	if (outarg && string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns),
+					 &ncolumns, column_name_to_id) < 0)
+		return EXIT_FAILURE;
+
+	/*
+	 * Initialize output
+	 */
+	scols_init_debug(0);
+
+	if (!(lsmem->table = scols_new_table()))
+		errx(EXIT_FAILURE, _("failed to initialize output table"));
+	scols_table_enable_raw(lsmem->table, lsmem->raw);
+	scols_table_enable_export(lsmem->table, lsmem->export);
+	scols_table_enable_json(lsmem->table, lsmem->json);
+	scols_table_enable_noheadings(lsmem->table, lsmem->noheadings);
+
+	if (lsmem->json)
+		scols_table_set_name(lsmem->table, "memory");
+
+	for (i = 0; i < ncolumns; i++) {
+		struct coldesc *ci = get_column_desc(i);
+		struct libscols_column *cl;
+
+		cl = scols_table_new_column(lsmem->table, ci->name, ci->whint, ci->flags);
+		if (!cl)
+			err(EXIT_FAILURE, _("Failed to initialize output column"));
+
+		if (lsmem->json) {
+			int id = get_column_id(i);
+
+			switch (id) {
+			case COL_SIZE:
+				if (!lsmem->bytes)
+					break;
+				/* fallthrough */
+			case COL_NODE:
+				scols_column_set_json_type(cl, SCOLS_JSON_NUMBER);
+				break;
+			case COL_REMOVABLE:
+				scols_column_set_json_type(cl, SCOLS_JSON_BOOLEAN);
+				break;
+			}
+		}
+	}
+
+	if (splitarg) {
+		int split[ARRAY_SIZE(coldescs)] = { 0 };
+		static size_t nsplits = 0;
+
+		if (strcasecmp(splitarg, "none") == 0)
+			;
+		else if (string_add_to_idarray(splitarg, split, ARRAY_SIZE(split),
+					&nsplits, column_name_to_id) < 0)
+			return EXIT_FAILURE;
+
+		set_split_policy(lsmem, split, nsplits);
+
+	} else
+		/* follow output columns */
+		set_split_policy(lsmem, columns, ncolumns);
+
+	/*
+	 * Read data and print output
+	 */
+	read_basic_info(lsmem);
+	read_info(lsmem);
+
+	if (lsmem->want_table) {
+		fill_scols_table(lsmem);
+		scols_print_table(lsmem->table);
+
+		if (lsmem->want_summary)
+			fputc('\n', stdout);
+	}
+
+	if (lsmem->want_summary)
+		print_summary(lsmem);
+
+	scols_unref_table(lsmem->table);
+	ul_unref_path(lsmem->sysmem);
+	free_info(lsmem);
+	return 0;
+}