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From: Guilherme Janczak <guilherme.janczak@yandex.com>
To: musl@lists.openwall.com
Subject: [musl] [PATCH] add close_range() syscall wrapper
Date: Wed, 10 Aug 2022 13:03:11 +0000	[thread overview]
Message-ID: <20220810130311.dwk7zxwkz32igrdm@yandex.com> (raw)

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


             reply	other threads:[~2022-08-10 13:05 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-10 13:03 Guilherme Janczak [this message]
2022-08-18  0:35 ` Rich Felker
2022-08-18 10:11   ` Érico Nogueira
2022-08-18 10:40     ` Alexey Izbyshev
2022-08-18 14:42       ` James Y Knight
2022-08-18 14:54         ` Alexey Izbyshev
2022-08-18 12:31   ` Guilherme Janczak

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