X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fcgroup-show.c;h=2f2669f828acbc8274e4f4bb7caeceebaadffda9;hb=9f26c90cb50c45d4549c4dd569917b4ac143b94d;hp=550a2f5f31aef4d16554f3ef54c527cce5d89032;hpb=f33d3ec1d7521c91da8b30ad5cb345d6416bb07d;p=elogind.git

diff --git a/src/shared/cgroup-show.c b/src/shared/cgroup-show.c
index 550a2f5f3..2f2669f82 100644
--- a/src/shared/cgroup-show.c
+++ b/src/shared/cgroup-show.c
@@ -26,6 +26,7 @@
 
 #include "util.h"
 #include "macro.h"
+#include "path-util.h"
 #include "cgroup-util.h"
 #include "cgroup-show.h"
 
@@ -50,33 +51,77 @@ static unsigned ilog10(unsigned long ul) {
         return n;
 }
 
-static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads) {
+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;
+
+        /* 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];
+        }
+        n_pids = m;
+        pid_width = ilog10(biggest);
+
+        /* And sort */
+        qsort(pids, n_pids, sizeof(pid_t), compare);
+
+        if(flags & OUTPUT_FULL_WIDTH)
+                n_columns = 0;
+        else {
+                if (n_columns > pid_width+2)
+                        n_columns -= pid_width+2;
+                else
+                        n_columns = 20;
+        }
+        for (i = 0; i < n_pids; i++) {
+                char *t = NULL;
+
+                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));
+
+                free(t);
+        }
+}
+
+
+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;
         FILE *f;
         size_t n = 0, n_allocated = 0;
         pid_t *pids = NULL;
         char *p;
-        pid_t pid, biggest = 0;
+        pid_t pid;
         int r;
 
-        if (n_columns <= 0)
-                n_columns = columns();
-
-        if (!prefix)
-                prefix = "";
-
-        if ((r = cg_fix_path(path, &p)) < 0)
+        r = cg_fix_path(path, &p);
+        if (r < 0)
                 return r;
 
         r = asprintf(&fn, "%s/cgroup.procs", p);
         free(p);
-
         if (r < 0)
                 return -ENOMEM;
 
         f = fopen(fn, "re");
         free(fn);
-
         if (!f)
                 return -errno;
 
@@ -90,7 +135,8 @@ static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigne
 
                         n_allocated = MAX(16U, n*2U);
 
-                        if (!(npids = realloc(pids, sizeof(pid_t) * n_allocated))) {
+                        npids = realloc(pids, sizeof(pid_t) * n_allocated);
+                        if (!npids) {
                                 r = -ENOMEM;
                                 goto finish;
                         }
@@ -100,54 +146,13 @@ static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigne
 
                 assert(n < n_allocated);
                 pids[n++] = pid;
-
-                if (pid > biggest)
-                        biggest = pid;
         }
 
         if (r < 0)
                 goto finish;
 
-        if (n > 0) {
-                unsigned i, m;
-
-                /* Filter duplicates */
-                m = 0;
-                for (i = 0; i < n; i++) {
-                        unsigned j;
-
-                        for (j = i+1; j < n; j++)
-                                if (pids[i] == pids[j])
-                                        break;
-
-                        if (j >= n)
-                                pids[m++] = pids[i];
-                }
-                n = m;
-
-                /* And sort */
-                qsort(pids, n, sizeof(pid_t), compare);
-
-                if (n_columns > 8)
-                        n_columns -= 8;
-                else
-                        n_columns = 20;
-
-                for (i = 0; i < n; i++) {
-                        char *t = NULL;
-
-                        get_process_cmdline(pids[i], n_columns, true, &t);
-
-                        printf("%s%s %*lu %s\n",
-                               prefix,
-                               (more || i < n-1) ? "\342\224\234" : "\342\224\224",
-                               (int) ilog10(biggest),
-                               (unsigned long) pids[i],
-                               strna(t));
-
-                        free(t);
-                }
-        }
+        if (n > 0)
+                show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads, flags);
 
         r = 0;
 
@@ -160,74 +165,90 @@ finish:
         return r;
 }
 
-int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads) {
+int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
         DIR *d;
         char *last = NULL;
         char *p1 = NULL, *p2 = NULL, *fn = NULL, *gn = NULL;
         bool shown_pids = false;
         int r;
 
+        assert(path);
+
         if (n_columns <= 0)
                 n_columns = columns();
 
         if (!prefix)
                 prefix = "";
 
-        if ((r = cg_fix_path(path, &fn)) < 0)
+        r = cg_fix_path(path, &fn);
+        if (r < 0)
                 return r;
 
-        if (!(d = opendir(fn))) {
+        d = opendir(fn);
+        if (!d) {
                 free(fn);
                 return -errno;
         }
 
         while ((r = cg_read_subgroup(d, &gn)) > 0) {
+                char *k;
+
+                r = asprintf(&k, "%s/%s", fn, gn);
+                free(gn);
+                if (r < 0) {
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k, false) > 0) {
+                        free(k);
+                        continue;
+                }
 
                 if (!shown_pids) {
-                        show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads);
+                        show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads, flags);
                         shown_pids = true;
                 }
 
                 if (last) {
-                        printf("%s\342\224\234 %s\n", prefix, file_name_from_path(last));
+                        printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH),
+                                           path_get_file_name(last));
 
-                        if (!p1)
-                                if (!(p1 = strappend(prefix, "\342\224\202 "))) {
+                        if (!p1) {
+                                p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERT));
+                                if (!p1) {
+                                        free(k);
                                         r = -ENOMEM;
                                         goto finish;
                                 }
+                        }
 
-                        show_cgroup_by_path(last, p1, n_columns-2, kernel_threads);
-
+                        show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, flags);
                         free(last);
-                        last = NULL;
                 }
 
-                r = asprintf(&last, "%s/%s", fn, gn);
-                free(gn);
-
-                if (r < 0) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
+                last = k;
         }
 
         if (r < 0)
                 goto finish;
 
         if (!shown_pids)
-                show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads);
+                show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads, flags);
 
         if (last) {
-                printf("%s\342\224\224 %s\n", prefix, file_name_from_path(last));
+                printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT),
+                                   path_get_file_name(last));
 
-                if (!p2)
-                        if (!(p2 = strappend(prefix, "  "))) {
+                if (!p2) {
+                        p2 = strappend(prefix, "  ");
+                        if (!p2) {
                                 r = -ENOMEM;
                                 goto finish;
                         }
+                }
 
-                show_cgroup_by_path(last, p2, n_columns-2, kernel_threads);
+                show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, flags);
         }
 
         r = 0;
@@ -243,7 +264,7 @@ finish:
         return r;
 }
 
-int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads) {
+int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
         char *p;
         int r;
 
@@ -254,8 +275,76 @@ int show_cgroup(const char *controller, const char *path, const char *prefix, un
         if (r < 0)
                 return r;
 
-        r = show_cgroup_by_path(p, prefix, n_columns, kernel_threads);
+        r = show_cgroup_by_path(p, prefix, n_columns, kernel_threads, flags);
         free(p);
 
         return r;
 }
+
+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 *copy;
+        unsigned i, j;
+        int r;
+
+        assert(controller);
+        assert(path);
+
+        if (n_pids <= 0)
+                return 0;
+
+        if (n_columns <= 0)
+                n_columns = columns();
+
+        if (!prefix)
+                prefix = "";
+
+        copy = new(pid_t, n_pids);
+        if (!copy)
+                return -ENOMEM;
+
+        for (i = 0, j = 0; i < n_pids; i++) {
+                char *k;
+
+                r = cg_get_by_pid(controller, pids[i], &k);
+                if (r < 0) {
+                        free(copy);
+                        return r;
+                }
+
+                if (path_startswith(k, path))
+                        continue;
+
+                copy[j++] = pids[i];
+        }
+
+        show_pid_array(copy, j, prefix, n_columns, true, false, false, flags);
+
+        free(copy);
+        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 r;
+
+        assert(controller);
+        assert(path);
+
+        r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, 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 r;
+        _cleanup_free_ char *controller = NULL, *path = NULL;
+
+        assert(spec);
+
+        r = cg_split_spec(spec, &controller, &path);
+        if (r < 0)
+                return r;
+
+        return show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, extra_pids, n_extra_pids, flags);
+}