tree-wide: drop 'This file is part of systemd' blurb

[elogind.git] / src / basic / util.h

diff --git a/src/basic/util.h b/src/basic/util.h
index 0f838632adbb4176c63c3934ef6c6a1418cebed6..27d09e98cafdd3bc2f7d7414734dea81b0a821c0 100644 (file)
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -1,24 +1,8 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #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>
@@ -38,11 +22,12 @@
 #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 "format-util.h"
 #include "macro.h"
 #include "missing.h"
 #include "time-util.h"
@@ -62,7 +47,9 @@ static inline const char* one_zero(bool b) {
         return b ? "1" : "0";
 }
 
-void execute_directories(const char* const* directories, usec_t timeout, char *argv[]);
+static inline const char* enable_disable(bool b) {
+        return b ? "enable" : "disable";
+}
 
 #if 0 /// UNNEEDED by elogind
 bool plymouth_running(void);
@@ -72,9 +59,7 @@ bool display_is_local(const char *display) _pure_;
 int socket_from_display(const char *display, char **path);
 
 #if 0 /// UNNEEDED by elogind
-int block_get_whole_disk(dev_t d, dev_t *ret);
 #endif // 0
-
 #define NULSTR_FOREACH(i, l)                                    \
         for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
 
@@ -90,16 +75,28 @@ bool kexec_loaded(void);
 int prot_from_flags(int flags) _const_;
 #endif // 0
 
-int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...);
-
 bool in_initrd(void);
-
 #if 0 /// UNNEEDED by elogind
+void in_initrd_force(bool value);
+
 void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
                  int (*compar) (const void *, const void *, void *),
                  void *arg);
 #endif // 0
 
+/**
+ * Normal bsearch requires base to be nonnull. Here were require
+ * that only if nmemb > 0.
+ */
+static inline void* bsearch_safe(const void *key, const void *base,
+                                 size_t nmemb, size_t size, comparison_fn_t compar) {
+        if (nmemb <= 0)
+                return NULL;
+
+        assert(base);
+        return bsearch(key, base, nmemb, size, compar);
+}
+
 /**
  * Normal qsort requires base to be nonnull. Here were require
  * that only if nmemb > 0.
@@ -112,9 +109,33 @@ static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_
         qsort(base, nmemb, size, compar);
 }
 
-#if 0 /// UNNEEDED by elogind
+/* A wrapper around the above, but that adds typesafety: the element size is automatically derived from the type and so
+ * is the prototype for the comparison function */
+#define typesafe_qsort(p, n, func)                                      \
+        ({                                                              \
+                int (*_func_)(const typeof(p[0])*, const typeof(p[0])*) = func; \
+                qsort_safe((p), (n), sizeof((p)[0]), (__compar_fn_t) _func_); \
+        })
+
+static inline void qsort_r_safe(void *base, size_t nmemb, size_t size, int (*compar)(const void*, const void*, void*), void *userdata) {
+        if (nmemb <= 1)
+                return;
+
+        assert(base);
+        qsort_r(base, nmemb, size, compar, userdata);
+}
+
+/**
+ * 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);
-#endif // 0
 
 #define memzero(x,l) (memset((x), 0, (l)))
 #define zero(x) (memzero(&(x), sizeof(x)))
@@ -130,7 +151,6 @@ static inline void _reset_errno_(int *saved_errno) {
 
 #define PROTECT_ERRNO _cleanup_(_reset_errno_) __attribute__((unused)) int _saved_errno_ = errno
 
-#if 0 /// UNNEEDED by elogind
 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();"
@@ -139,7 +159,6 @@ static inline int negative_errno(void) {
         assert_return(errno > 0, -EINVAL);
         return -errno;
 }
-#endif // 0
 
 static inline unsigned u64log2(uint64_t n) {
 #if __SIZEOF_LONG_LONG__ == 8
@@ -178,19 +197,21 @@ static inline unsigned log2u_round_up(unsigned x) {
         return log2u(x - 1) + 1;
 }
 
-#if 0 /// UNNEEDED by elogind
-bool id128_is_valid(const char *s) _pure_;
-#endif // 0
-
 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);
+uint64_t physical_memory_scale(uint64_t v, uint64_t max);
 
-#if 0 /// UNNEEDED by elogind
-int update_reboot_param_file(const char *param);
-#endif // 0
+uint64_t system_tasks_max(void);
+uint64_t system_tasks_max_scale(uint64_t v, uint64_t max);
 
 int version(void);
+
+#if 0 /// UNNEEDED by elogind
+int str_verscmp(const char *s1, const char *s2);
+
+void disable_coredumps(void);
+#endif // 0