Prep v235: Added cap-list, which is needed now.

1 files changed, 131 insertions, 0 deletions

diff --git a/src/basic/cap-list.c b/src/basic/cap-list.c
new file mode 100644
index 000000000..124641f94
--- /dev/null
+++ b/src/basic/cap-list.c
@@ -0,0 +1,131 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2014 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <string.h>
+
+#include "alloc-util.h"
+#include "capability-util.h"
+#include "cap-list.h"
+#include "extract-word.h"
+#include "macro.h"
+#include "missing.h"
+#include "parse-util.h"
+#include "util.h"
+
+static const struct capability_name* lookup_capability(register const char *str, register GPERF_LEN_TYPE len);
+
+#include "cap-from-name.h"
+#include "cap-to-name.h"
+
+const char *capability_to_name(int id) {
+
+        if (id < 0)
+                return NULL;
+
+        if (id >= (int) ELEMENTSOF(capability_names))
+                return NULL;
+
+        return capability_names[id];
+}
+
+int capability_from_name(const char *name) {
+        const struct capability_name *sc;
+        int r, i;
+
+        assert(name);
+
+        /* Try to parse numeric capability */
+        r = safe_atoi(name, &i);
+        if (r >= 0 && i >= 0)
+                return i;
+
+        /* Try to parse string capability */
+        sc = lookup_capability(name, strlen(name));
+        if (!sc)
+                return -EINVAL;
+
+        return sc->id;
+}
+
+int capability_list_length(void) {
+        return (int) ELEMENTSOF(capability_names);
+}
+
+int capability_set_to_string_alloc(uint64_t set, char **s) {
+        _cleanup_free_ char *str = NULL;
+        unsigned long i;
+        size_t allocated = 0, n = 0;
+
+        assert(s);
+
+        for (i = 0; i < cap_last_cap(); i++)
+                if (set & (UINT64_C(1) << i)) {
+                        const char *p;
+                        size_t add;
+
+                        p = capability_to_name(i);
+                        if (!p)
+                                return -EINVAL;
+
+                        add = strlen(p);
+
+                        if (!GREEDY_REALLOC0(str, allocated, n + add + 2))
+                                return -ENOMEM;
+
+                        strcpy(mempcpy(str + n, p, add), " ");
+                        n += add + 1;
+                }
+
+        if (n != 0)
+                str[n - 1] = '\0';
+
+        *s = str;
+        str = NULL;
+
+        return 0;
+}
+
+int capability_set_from_string(const char *s, uint64_t *set) {
+        uint64_t val = 0;
+        const char *p;
+
+        assert(set);
+
+        for (p = s;;) {
+                _cleanup_free_ char *word = NULL;
+                int r;
+
+                r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
+                if (r == -ENOMEM)
+                        return r;
+                if (r <= 0)
+                        break;
+
+                r = capability_from_name(word);
+                if (r < 0)
+                        continue;
+
+                val |= ((uint64_t) UINT64_C(1)) << (uint64_t) r;
+        }
+
+        *set = val;
+
+        return 0;
+}