1 files changed, 189 insertions, 0 deletions
diff --git a/src/libbasic/include/basic/util.h b/src/libbasic/include/basic/util.h
new file mode 100644
index 0000000000..1c032c15c9
--- /dev/null
+++ b/src/libbasic/include/basic/util.h
@@ -0,0 +1,189 @@
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 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 <alloca.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "formats-util.h"
+#include "macro.h"
+#include "missing.h"
+#include "time-util.h"
+
+size_t page_size(void) _pure_;
+#define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
+
+static inline const char* yes_no(bool b) {
+        return b ? "yes" : "no";
+}
+
+static inline const char* true_false(bool b) {
+        return b ? "true" : "false";
+}
+
+static inline const char* one_zero(bool b) {
+        return b ? "1" : "0";
+}
+
+void execute_directories(const char* const* directories, usec_t timeout, char *argv[]);
+
+bool plymouth_running(void);
+
+bool display_is_local(const char *display) _pure_;
+int socket_from_display(const char *display, char **path);
+
+int block_get_whole_disk(dev_t d, dev_t *ret);
+
+#define NULSTR_FOREACH(i, l)                                    \
+        for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
+
+#define NULSTR_FOREACH_PAIR(i, j, l)                             \
+        for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
+
+extern int saved_argc;
+extern char **saved_argv;
+
+bool kexec_loaded(void);
+
+int prot_from_flags(int flags) _const_;
+
+int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
+
+bool in_initrd(void);
+
+void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
+                 int (*compar) (const void *, const void *, void *),
+                 void *arg);
+
+/**
+ * Normal qsort requires base to be nonnull. Here were require
+ * that only if nmemb > 0.
+ */
+static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_fn_t compar) {
+        if (nmemb <= 1)
+                return;
+
+        assert(base);
+        qsort(base, nmemb, size, compar);
+}
+
+/**
+ * Normal memcpy requires src to be nonnull. We do nothing if n is 0.
+ */
+static inline void memcpy_safe(void *dst, const void *src, size_t n) {
+        if (n == 0)
+                return;
+        assert(src);
+        memcpy(dst, src, n);
+}
+
+int on_ac_power(void);
+
+#define memzero(x,l) (memset((x), 0, (l)))
+#define zero(x) (memzero(&(x), sizeof(x)))
+
+static inline void *mempset(void *s, int c, size_t n) {
+        memset(s, c, n);
+        return (uint8_t*)s + n;
+}
+
+static inline void _reset_errno_(int *saved_errno) {
+        errno = *saved_errno;
+}
+
+#define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
+
+static inline int negative_errno(void) {
+        /* This helper should be used to shut up gcc if you know 'errno' is
+         * negative. Instead of "return -errno;", use "return negative_errno();"
+         * It will suppress bogus gcc warnings in case it assumes 'errno' might
+         * be 0 and thus the caller's error-handling might not be triggered. */
+        assert_return(errno > 0, -EINVAL);
+        return -errno;
+}
+
+static inline unsigned u64log2(uint64_t n) {
+#if __SIZEOF_LONG_LONG__ == 8
+        return (n > 1) ? (unsigned) __builtin_clzll(n) ^ 63U : 0;
+#else
+#error "Wut?"
+#endif
+}
+
+static inline unsigned u32ctz(uint32_t n) {
+#if __SIZEOF_INT__ == 4
+        return __builtin_ctz(n);
+#else
+#error "Wut?"
+#endif
+}
+
+static inline unsigned log2i(int x) {
+        assert(x > 0);
+
+        return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1;
+}
+
+static inline unsigned log2u(unsigned x) {
+        assert(x > 0);
+
+        return sizeof(unsigned) * 8 - __builtin_clz(x) - 1;
+}
+
+static inline unsigned log2u_round_up(unsigned x) {
+        assert(x > 0);
+
+        if (x == 1)
+                return 0;
+
+        return log2u(x - 1) + 1;
+}
+
+bool id128_is_valid(const char *s) _pure_;
+
+int container_get_leader(const char *machine, pid_t *pid);
+
+int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *userns_fd, int *root_fd);
+int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int userns_fd, int root_fd);
+
+uint64_t physical_memory(void);
+
+int update_reboot_parameter_and_warn(const char *param);
+
+int version(void);