-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <stdio.h>
-#include <string.h>
#include <dirent.h>
#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
-#include "util.h"
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "cgroup-show.h"
+#include "cgroup-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "format-util.h"
+#include "locale-util.h"
#include "macro.h"
+#include "output-mode.h"
#include "path-util.h"
-#include "cgroup-util.h"
-#include "cgroup-show.h"
-
-static int compare(const void *a, const void *b) {
- const pid_t *p = a, *q = b;
-
- if (*p < *q)
- return -1;
- if (*p > *q)
- return 1;
- return 0;
-}
+#include "process-util.h"
+#include "string-util.h"
+#include "terminal-util.h"
+#include "unit-name.h"
-static unsigned ilog10(unsigned long ul) {
- int n = 0;
+static void show_pid_array(
+ pid_t pids[],
+ unsigned n_pids,
+ const char *prefix,
+ unsigned n_columns,
+ bool extra,
+ bool more,
+ OutputFlags flags) {
- while (ul > 0) {
- n++;
- ul /= 10;
- }
+ unsigned i, j, pid_width;
- return n;
-}
+ if (n_pids == 0)
+ return;
-static void show_pid_array(int pids[], unsigned n_pids, const char *prefix, unsigned n_columns, bool extra, bool more, bool kernel_threads, OutputFlags flags) {
- unsigned i, m, pid_width;
- pid_t biggest = 0;
+ qsort(pids, n_pids, sizeof(pid_t), pid_compare_func);
/* Filter duplicates */
- m = 0;
- for (i = 0; i < n_pids; i++) {
- unsigned j;
-
- if (pids[i] > biggest)
- biggest = pids[i];
-
- for (j = i+1; j < n_pids; j++)
- if (pids[i] == pids[j])
- break;
-
- if (j >= n_pids)
- pids[m++] = pids[i];
+ for (j = 0, i = 1; i < n_pids; i++) {
+ if (pids[i] == pids[j])
+ continue;
+ pids[++j] = pids[i];
}
- n_pids = m;
- pid_width = ilog10(biggest);
+ n_pids = j + 1;
+ pid_width = DECIMAL_STR_WIDTH(pids[j]);
- /* And sort */
- qsort(pids, n_pids, sizeof(pid_t), compare);
-
- if(flags & OUTPUT_FULL_WIDTH)
+ if (flags & OUTPUT_FULL_WIDTH)
n_columns = 0;
else {
if (n_columns > pid_width+2)
n_columns = 20;
}
for (i = 0; i < n_pids; i++) {
- char *t = NULL;
+ _cleanup_free_ char *t = NULL;
- get_process_cmdline(pids[i], n_columns, true, &t);
+ (void) get_process_cmdline(pids[i], n_columns, true, &t);
- printf("%s%s%*lu %s\n",
- prefix,
- draw_special_char(extra ? DRAW_TRIANGULAR_BULLET :
- ((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT)),
- pid_width,
- (unsigned long) pids[i],
- strna(t));
+ if (extra)
+ printf("%s%s ", prefix, special_glyph(TRIANGULAR_BULLET));
+ else
+ printf("%s%s", prefix, special_glyph(((more || i < n_pids-1) ? TREE_BRANCH : TREE_RIGHT)));
- free(t);
+ printf("%*"PID_PRI" %s\n", pid_width, pids[i], strna(t));
}
}
+static int show_cgroup_one_by_path(
+ const char *path,
+ const char *prefix,
+ unsigned n_columns,
+ bool more,
+ OutputFlags flags) {
-static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads, OutputFlags flags) {
char *fn;
_cleanup_fclose_ FILE *f = NULL;
size_t n = 0, n_allocated = 0;
_cleanup_free_ pid_t *pids = NULL;
- char *p = NULL;
+ _cleanup_free_ char *p = NULL;
pid_t pid;
int r;
if (r < 0)
return r;
- fn = strappend(p, "/cgroup.procs");
- free(p);
- if (!fn)
- return -ENOMEM;
-
+ fn = strjoina(p, "/cgroup.procs");
f = fopen(fn, "re");
- free(fn);
if (!f)
return -errno;
while ((r = cg_read_pid(f, &pid)) > 0) {
- if (!kernel_threads && is_kernel_thread(pid) > 0)
+ if (!(flags & OUTPUT_KERNEL_THREADS) && is_kernel_thread(pid) > 0)
continue;
- if (n >= n_allocated) {
- pid_t *npids;
-
- n_allocated = MAX(16U, n*2U);
-
- npids = realloc(pids, sizeof(pid_t) * n_allocated);
- if (!npids)
- return -ENOMEM;
-
- pids = npids;
- }
+ if (!GREEDY_REALLOC(pids, n_allocated, n + 1))
+ return -ENOMEM;
assert(n < n_allocated);
pids[n++] = pid;
if (r < 0)
return r;
- if (n > 0)
- show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads, flags);
+ show_pid_array(pids, n, prefix, n_columns, false, more, flags);
return 0;
}
-int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
+int show_cgroup_by_path(
+ const char *path,
+ const char *prefix,
+ unsigned n_columns,
+ OutputFlags flags) {
+
_cleanup_free_ char *fn = NULL, *p1 = NULL, *last = NULL, *p2 = NULL;
_cleanup_closedir_ DIR *d = NULL;
char *gn = NULL;
if (n_columns <= 0)
n_columns = columns();
- if (!prefix)
- prefix = "";
+ prefix = strempty(prefix);
r = cg_mangle_path(path, &fn);
if (r < 0)
while ((r = cg_read_subgroup(d, &gn)) > 0) {
_cleanup_free_ char *k = NULL;
- k = strjoin(fn, "/", gn, NULL);
+ k = strjoin(fn, "/", gn);
free(gn);
if (!k)
return -ENOMEM;
- if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k, false) > 0)
+ if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k) > 0)
continue;
if (!shown_pids) {
- show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads, flags);
+ show_cgroup_one_by_path(path, prefix, n_columns, true, flags);
shown_pids = true;
}
if (last) {
- printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH),
- path_get_file_name(last));
+ printf("%s%s%s\n", prefix, special_glyph(TREE_BRANCH), cg_unescape(basename(last)));
if (!p1) {
- p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERT));
+ p1 = strappend(prefix, special_glyph(TREE_VERTICAL));
if (!p1)
return -ENOMEM;
}
- show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, flags);
+ show_cgroup_by_path(last, p1, n_columns-2, flags);
free(last);
}
return r;
if (!shown_pids)
- show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads, flags);
+ show_cgroup_one_by_path(path, prefix, n_columns, !!last, flags);
if (last) {
- printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT),
- path_get_file_name(last));
+ printf("%s%s%s\n", prefix, special_glyph(TREE_RIGHT), cg_unescape(basename(last)));
if (!p2) {
p2 = strappend(prefix, " ");
return -ENOMEM;
}
- show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, flags);
+ show_cgroup_by_path(last, p2, n_columns-2, flags);
}
return 0;
}
-int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
+int show_cgroup(const char *controller,
+ const char *path,
+ const char *prefix,
+ unsigned n_columns,
+ OutputFlags flags) {
_cleanup_free_ char *p = NULL;
int r;
if (r < 0)
return r;
- return show_cgroup_by_path(p, prefix, n_columns, kernel_threads, flags);
+ return show_cgroup_by_path(p, prefix, n_columns, flags);
}
-static int show_extra_pids(const char *controller, const char *path, const char *prefix, unsigned n_columns, const pid_t pids[], unsigned n_pids, OutputFlags flags) {
- pid_t _cleanup_free_ *copy = NULL;
+static int show_extra_pids(
+ const char *controller,
+ const char *path,
+ const char *prefix,
+ unsigned n_columns,
+ const pid_t pids[],
+ unsigned n_pids,
+ OutputFlags flags) {
+
+ _cleanup_free_ pid_t *copy = NULL;
unsigned i, j;
int r;
- assert(controller);
assert(path);
if (n_pids <= 0)
return -ENOMEM;
for (i = 0, j = 0; i < n_pids; i++) {
- char _cleanup_free_ *k = NULL;
+ _cleanup_free_ char *k = NULL;
r = cg_pid_get_path(controller, pids[i], &k);
if (r < 0)
copy[j++] = pids[i];
}
- show_pid_array(copy, j, prefix, n_columns, true, false, false, flags);
+ show_pid_array(copy, j, prefix, n_columns, true, false, flags);
return 0;
}
-int show_cgroup_and_extra(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, const pid_t extra_pids[], unsigned n_extra_pids, OutputFlags flags) {
+int show_cgroup_and_extra(
+ const char *controller,
+ const char *path,
+ const char *prefix,
+ unsigned n_columns,
+ const pid_t extra_pids[],
+ unsigned n_extra_pids,
+ OutputFlags flags) {
+
int r;
assert(path);
- r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, flags);
+ r = show_cgroup(controller, path, prefix, n_columns, flags);
if (r < 0)
return r;
return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags);
}
-int show_cgroup_and_extra_by_spec(const char *spec, const char *prefix, unsigned n_columns, bool kernel_threads, const pid_t extra_pids[], unsigned n_extra_pids, OutputFlags flags) {
+int show_cgroup_and_extra_by_spec(
+ const char *spec,
+ const char *prefix,
+ unsigned n_columns,
+ const pid_t extra_pids[],
+ unsigned n_extra_pids,
+ OutputFlags flags) {
+
_cleanup_free_ char *controller = NULL, *path = NULL;
int r;
if (r < 0)
return r;
- return show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, extra_pids, n_extra_pids, flags);
+ return show_cgroup_and_extra(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags);
+}
+
+int show_cgroup_get_unit_path_and_warn(
+ sd_bus *bus,
+ const char *unit,
+ char **ret) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ path = unit_dbus_path_from_name(unit);
+ if (!path)
+ return log_oom();
+
+ r = sd_bus_get_property_string(
+ bus,
+ "org.freedesktop.systemd1",
+ path,
+ unit_dbus_interface_from_name(unit),
+ "ControlGroup",
+ &error,
+ ret);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query unit control group path: %s",
+ bus_error_message(&error, r));
+
+ return 0;
+}
+
+int show_cgroup_get_path_and_warn(
+ const char *machine,
+ const char *prefix,
+ char **ret) {
+
+ int r;
+ _cleanup_free_ char *root = NULL;
+
+ if (machine) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_free_ char *unit = NULL;
+ const char *m;
+
+ m = strjoina("/run/systemd/machines/", machine);
+ r = parse_env_file(m, NEWLINE, "SCOPE", &unit, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to load machine data: %m");
+
+ r = bus_connect_transport_systemd(BUS_TRANSPORT_LOCAL, NULL, false, &bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create bus connection: %m");
+
+ r = show_cgroup_get_unit_path_and_warn(bus, unit, &root);
+ if (r < 0)
+ return r;
+ } else {
+ r = cg_get_root_path(&root);
+ if (r == -ENOMEDIUM)
+ return log_error_errno(r, "Failed to get root control group path.\n"
+ "No cgroup filesystem mounted on /sys/fs/cgroup");
+ else if (r < 0)
+ return log_error_errno(r, "Failed to get root control group path: %m");
+ }
+
+ if (prefix) {
+ char *t;
+
+ t = strjoin(root, prefix);
+ if (!t)
+ return log_oom();
+
+ *ret = t;
+ } else {
+ *ret = root;
+ root = NULL;
+ }
+
+ return 0;
}
projects / thirdparty / systemd.git / blobdiff