tools/nolibc: move getrlimit() and friends to sys/resource.h

This is the location regular userspace expects these definitions.

Signed-off-by: Thomas Weißschuh <[e-mail]>
Acked-by: Willy Tarreau <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

tools/include/nolibc/Makefile

···
 		sys/prctl.h \
 		sys/random.h \
 		sys/reboot.h \
+		sys/resource.h \
 		sys/stat.h \
 		sys/syscall.h \
 		sys/time.h \

tools/include/nolibc/nolibc.h

···
 #include "sys/prctl.h"
 #include "sys/random.h"
 #include "sys/reboot.h"
+#include "sys/resource.h"
 #include "sys/stat.h"
 #include "sys/syscall.h"
 #include "sys/time.h"

tools/include/nolibc/sys.h

···
 #include <linux/auxvec.h>
 #include <linux/fcntl.h> /* for O_* and AT_* */
 #include <linux/stat.h>  /* for statx() */
-#include <linux/resource.h>
 #include <linux/utsname.h>
 
 #include "errno.h"
···
 ssize_t read(int fd, void *buf, size_t count)
 {
 	return __sysret(sys_read(fd, buf, count));
-}
-
-
-/*
- * int getrlimit(int resource, struct rlimit *rlim);
- * int setrlimit(int resource, const struct rlimit *rlim);
- */
-
-static __attribute__((unused))
-int sys_prlimit64(pid_t pid, int resource,
-		  const struct rlimit64 *new_limit, struct rlimit64 *old_limit)
-{
-	return my_syscall4(__NR_prlimit64, pid, resource, new_limit, old_limit);
-}
-
-static __attribute__((unused))
-int getrlimit(int resource, struct rlimit *rlim)
-{
-	struct rlimit64 rlim64;
-	int ret;
-
-	ret = __sysret(sys_prlimit64(0, resource, NULL, &rlim64));
-	rlim->rlim_cur = rlim64.rlim_cur;
-	rlim->rlim_max = rlim64.rlim_max;
-
-	return ret;
-}
-
-static __attribute__((unused))
-int setrlimit(int resource, const struct rlimit *rlim)
-{
-	struct rlimit64 rlim64 = {
-		.rlim_cur = rlim->rlim_cur,
-		.rlim_max = rlim->rlim_max,
-	};
-
-	return __sysret(sys_prlimit64(0, resource, &rlim64, NULL));
 }
 
 

tools/include/nolibc/sys/resource.h

···
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Resource definitions for NOLIBC
+ * Copyright (C) 2017-2021 Willy Tarreau <[e-mail]>
+ */
+
+/* make sure to include all global symbols */
+#include "../nolibc.h"
+
+#ifndef _NOLIBC_SYS_RESOURCE_H
+#define _NOLIBC_SYS_RESOURCE_H
+
+#include "../sys.h"
+
+#include <linux/resource.h>
+
+/*
+ * int getrlimit(int resource, struct rlimit *rlim);
+ * int setrlimit(int resource, const struct rlimit *rlim);
+ */
+
+static __attribute__((unused))
+int sys_prlimit64(pid_t pid, int resource,
+		  const struct rlimit64 *new_limit, struct rlimit64 *old_limit)
+{
+	return my_syscall4(__NR_prlimit64, pid, resource, new_limit, old_limit);
+}
+
+static __attribute__((unused))
+int getrlimit(int resource, struct rlimit *rlim)
+{
+	struct rlimit64 rlim64;
+	int ret;
+
+	ret = __sysret(sys_prlimit64(0, resource, NULL, &rlim64));
+	rlim->rlim_cur = rlim64.rlim_cur;
+	rlim->rlim_max = rlim64.rlim_max;
+
+	return ret;
+}
+
+static __attribute__((unused))
+int setrlimit(int resource, const struct rlimit *rlim)
+{
+	struct rlimit64 rlim64 = {
+		.rlim_cur = rlim->rlim_cur,
+		.rlim_max = rlim->rlim_max,
+	};
+
+	return __sysret(sys_prlimit64(0, resource, &rlim64, NULL));
+}
+
+#endif /* _NOLIBC_SYS_RESOURCE_H */

tools/include/nolibc/types.h

···
 #include <linux/stat.h>
 #include <linux/time.h>
 #include <linux/wait.h>
-#include <linux/resource.h>
 
 
 /* Only the generic macros and types may be defined here. The arch-specific