#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>
#endif // 0
bool in_initrd(void);
+#if 0 /// UNNEEDED by elogind
void in_initrd_force(bool value);
-#if 0 /// UNNEEDED by elogind
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.
qsort(base, nmemb, size, compar);
}
+/* 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.
*/
memcpy(dst, src, n);
}
-#if 0 /// UNNEEDED by elogind
int on_ac_power(void);
-#endif // 0
#define memzero(x,l) (memset((x), 0, (l)))
#define zero(x) (memzero(&(x), sizeof(x)))
uint64_t system_tasks_max(void);
uint64_t system_tasks_max_scale(uint64_t v, uint64_t max);
-#if 0 /// UNNEEDED by elogind
-#endif // 0
int version(void);
#if 0 /// UNNEEDED by elogind
-#endif // 0
int str_verscmp(const char *s1, const char *s2);
void disable_coredumps(void);
+#endif // 0