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Message-ID: <20260529171103.12343-5-luis@igalia.com>
Date: Fri, 29 May 2026 18:11:01 +0100
From: Luis Henriques <luis@...lia.com>
To: musl@...ts.openwall.com
Cc: Luis Henriques <luis@...lia.com>
Subject: [RFC PATCH 4/6] add fsconfig() linux syscall wrapper
The fsconfig() syscall is part of the "new" mount API which was merged into
the linux kernel 5.2.
Signed-off-by: Luis Henriques <luis@...lia.com>
---
include/sys/mount.h | 13 +++++++++++++
src/linux/mount.c | 5 +++++
2 files changed, 18 insertions(+)
diff --git a/include/sys/mount.h b/include/sys/mount.h
index 4bda07c09462..3a7dee0e04ad 100644
--- a/include/sys/mount.h
+++ b/include/sys/mount.h
@@ -78,6 +78,18 @@ extern "C" {
#define FSOPEN_CLOEXEC 0x00000001
+enum fsconfig_command {
+ FSCONFIG_SET_FLAG = 0,
+ FSCONFIG_SET_STRING = 1,
+ FSCONFIG_SET_BINARY = 2,
+ FSCONFIG_SET_PATH = 3,
+ FSCONFIG_SET_PATH_EMPTY = 4,
+ FSCONFIG_SET_FD = 5,
+ FSCONFIG_CMD_CREATE = 6,
+ FSCONFIG_CMD_RECONFIGURE = 7,
+ FSCONFIG_CMD_CREATE_EXCL = 8,
+};
+
int mount(const char *, const char *, const char *, unsigned long, const void *);
int umount(const char *);
int umount2(const char *, int);
@@ -85,6 +97,7 @@ int umount2(const char *, int);
int open_tree(int, const char *, unsigned int);
int move_mount(int, const char *, int, const char *, unsigned int);
int fsopen(const char *, unsigned int);
+int fsconfig(int, unsigned int, const char *, const void *, int);
#ifdef __cplusplus
}
diff --git a/src/linux/mount.c b/src/linux/mount.c
index ed7f962a019f..5be2c8cb8c58 100644
--- a/src/linux/mount.c
+++ b/src/linux/mount.c
@@ -30,3 +30,8 @@ int fsopen(const char *fsname, unsigned int flags)
{
return syscall(SYS_fsopen, fsname, flags);
}
+
+int fsconfig(int fd, unsigned int cmd, const char *key, const void * value, int aux)
+{
+ return syscall(SYS_fsconfig, fd, cmd, key, value, aux);
+}
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