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Message-ID: <20220810130311.dwk7zxwkz32igrdm@yandex.com>
Date: Wed, 10 Aug 2022 13:03:11 +0000
From: Guilherme Janczak <guilherme.janczak@...dex.com>
To: musl@...ts.openwall.com
Subject: [PATCH] add close_range() syscall wrapper
close_range() is a syscall present in FreeBSD 8.0 and Linux 5.9. glibc
2.34 added a wrapper.
---
include/unistd.h | 3 +++
src/linux/close_range.c | 8 ++++++++
2 files changed, 11 insertions(+)
create mode 100644 src/linux/close_range.c
diff --git a/include/unistd.h b/include/unistd.h
index 80be3b26..e4b8cbb1 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -161,6 +161,9 @@ unsigned ualarm(unsigned, unsigned);
#define L_INCR 1
#define L_XTND 2
int brk(void *);
+#define CLOSE_RANGE_UNSHARE 0x01
+#define CLOSE_RANGE_CLOEXEC 0x02
+int close_range(unsigned int, unsigned int, int);
void *sbrk(intptr_t);
pid_t vfork(void);
int vhangup(void);
diff --git a/src/linux/close_range.c b/src/linux/close_range.c
new file mode 100644
index 00000000..4c5cd68c
--- /dev/null
+++ b/src/linux/close_range.c
@@ -0,0 +1,8 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include "syscall.h"
+
+int close_range(unsigned int first, unsigned int last, int flags)
+{
+ return syscall(SYS_close_range, first, last, (unsigned int)flags);
+}
--
2.35.1
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