Adding upstream version 2.39.3.upstream/2.39.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 208 insertions, 0 deletions

diff --git a/include/mount-api-utils.h b/include/mount-api-utils.h
new file mode 100644
index 0000000..8ae546b
--- /dev/null
+++ b/include/mount-api-utils.h
@@ -0,0 +1,208 @@
+/*
+ * No copyright is claimed.  This code is in the public domain; do with
+ * it what you wish.
+ */
+#ifndef UTIL_LINUX_MOUNT_API_UTILS
+#define UTIL_LINUX_MOUNT_API_UTILS
+
+#if defined(HAVE_MOUNTFD_API) && defined(HAVE_LINUX_MOUNT_H)
+
+#include <sys/syscall.h>
+#include <linux/mount.h>
+
+/* Accepted by both open_tree() and mount_setattr(). */
+#ifndef AT_RECURSIVE
+# define AT_RECURSIVE 0x8000
+#endif
+
+#ifndef OPEN_TREE_CLONE
+# define OPEN_TREE_CLONE 1
+#endif
+
+#ifndef OPEN_TREE_CLOEXEC
+# define OPEN_TREE_CLOEXEC O_CLOEXEC
+#endif
+
+#if !defined(HAVE_OPEN_TREE) && defined(SYS_open_tree)
+static inline int open_tree(int dfd, const char *filename, unsigned int flags)
+{
+	return syscall(SYS_open_tree, dfd, filename, flags);
+}
+#endif
+
+#ifndef MOVE_MOUNT_F_SYMLINKS
+# define MOVE_MOUNT_F_SYMLINKS 0x00000001 /* Follow symlinks on from path */
+#endif
+
+#ifndef MOVE_MOUNT_F_AUTOMOUNTS
+# define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */
+#endif
+
+#ifndef MOVE_MOUNT_F_EMPTY_PATH
+# define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */
+#endif
+
+#ifndef MOVE_MOUNT_T_SYMLINKS
+# define MOVE_MOUNT_T_SYMLINKS 0x00000010 /* Follow symlinks on to path */
+#endif
+
+#ifndef MOVE_MOUNT_T_AUTOMOUNTS
+# define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */
+#endif
+
+#ifndef MOVE_MOUNT_T_EMPTY_PATH
+# define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
+#endif
+
+#ifndef MOVE_MOUNT_SET_GROUP
+# define MOVE_MOUNT_SET_GROUP	0x00000100 /* Set sharing group instead */
+#endif
+
+#ifndef MOVE_MOUNT__MASK
+# define MOVE_MOUNT__MASK 0x00000077
+#endif
+
+#if !defined(HAVE_MOVE_MOUNT) && defined(SYS_move_mount)
+static inline int move_mount(int from_dfd, const char *from_pathname, int to_dfd,
+			     const char *to_pathname, unsigned int flags)
+{
+	return syscall(SYS_move_mount, from_dfd, from_pathname, to_dfd,
+		       to_pathname, flags);
+}
+#endif
+
+#ifndef MOUNT_ATTR_RDONLY
+# define MOUNT_ATTR_RDONLY 0x00000001
+#endif
+
+#ifndef MOUNT_ATTR_NOSUID
+# define MOUNT_ATTR_NOSUID 0x00000002
+#endif
+
+#ifndef MOUNT_ATTR_NODEV
+# define MOUNT_ATTR_NODEV 0x00000004
+#endif
+
+#ifndef MOUNT_ATTR_NOEXEC
+# define MOUNT_ATTR_NOEXEC 0x00000008
+#endif
+
+#ifndef MOUNT_ATTR__ATIME
+# define MOUNT_ATTR__ATIME 0x00000070
+#endif
+
+#ifndef MOUNT_ATTR_RELATIME
+# define MOUNT_ATTR_RELATIME 0x00000000
+#endif
+
+#ifndef MOUNT_ATTR_NOATIME
+# define MOUNT_ATTR_NOATIME 0x00000010
+#endif
+
+#ifndef MOUNT_ATTR_STRICTATIME
+# define MOUNT_ATTR_STRICTATIME 0x00000020
+#endif
+
+#ifndef MOUNT_ATTR_NODIRATIME
+# define MOUNT_ATTR_NODIRATIME 0x00000080
+#endif
+
+#ifndef MOUNT_ATTR_IDMAP
+# define MOUNT_ATTR_IDMAP 0x00100000
+#endif
+
+#ifndef MOUNT_ATTR_NOSYMFOLLOW
+# define MOUNT_ATTR_NOSYMFOLLOW 0x00200000
+#endif
+
+#ifndef HAVE_STRUCT_MOUNT_ATTR
+# ifndef MOUNT_ATTR_SIZE_VER0 /* For case mount.h comes from a place invisible for autotools/meson */
+# include <inttypes.h>
+struct mount_attr {
+	uint64_t attr_set;
+	uint64_t attr_clr;
+	uint64_t propagation;
+	uint64_t userns_fd;
+};
+# endif
+#endif
+
+#if !defined(HAVE_MOUNT_SETATTR) && defined(SYS_mount_setattr)
+static inline int mount_setattr(int dfd, const char *path, unsigned int flags,
+				struct mount_attr *attr, size_t size)
+{
+	return syscall(SYS_mount_setattr, dfd, path, flags, attr, size);
+}
+#endif
+
+#ifndef HAVE_ENUM_FSCONFIG_COMMAND
+# ifndef FSOPEN_CLOEXEC /* For case mount.h comes from a place invisible for autotools/meson */
+enum fsconfig_command {
+	FSCONFIG_SET_FLAG	= 0,	/* Set parameter, supplying no value */
+	FSCONFIG_SET_STRING	= 1,	/* Set parameter, supplying a string value */
+	FSCONFIG_SET_BINARY	= 2,	/* Set parameter, supplying a binary blob value */
+	FSCONFIG_SET_PATH	= 3,	/* Set parameter, supplying an object by path */
+	FSCONFIG_SET_PATH_EMPTY	= 4,	/* Set parameter, supplying an object by (empty) path */
+	FSCONFIG_SET_FD		= 5,	/* Set parameter, supplying an object by fd */
+	FSCONFIG_CMD_CREATE	= 6,	/* Invoke superblock creation */
+	FSCONFIG_CMD_RECONFIGURE = 7,	/* Invoke superblock reconfiguration */
+};
+# endif
+#endif
+
+#if !defined(HAVE_FSCONFIG) && defined(SYS_fsconfig)
+static inline int fsconfig(int fd, unsigned int cmd, const char *key,
+                    const void *value, int aux)
+{
+        return syscall(SYS_fsconfig, fd, cmd, key, value, aux);
+}
+#endif
+
+#ifndef FSOPEN_CLOEXEC
+# define FSOPEN_CLOEXEC          0x00000001
+#endif
+
+#if !defined(HAVE_FSOPEN) && defined(SYS_fsopen)
+static inline int fsopen(const char *fsname, unsigned int flags)
+{
+        return syscall(SYS_fsopen, fsname, flags);
+}
+#endif
+
+#ifndef FSMOUNT_CLOEXEC
+# define FSMOUNT_CLOEXEC         0x00000001
+#endif
+
+#if !defined(HAVE_FSMOUNT) && defined(SYS_fsmount)
+static inline int fsmount(int fd, unsigned int flags, unsigned int mount_attrs)
+{
+        return syscall(SYS_fsmount, fd, flags, mount_attrs);
+}
+#endif
+
+#ifndef FSPICK_CLOEXEC
+# define FSPICK_CLOEXEC          0x00000001
+#endif
+
+#ifndef FSPICK_SYMLINK_NOFOLLOW
+# define FSPICK_SYMLINK_NOFOLLOW 0x00000002
+#endif
+
+#ifndef FSPICK_NO_AUTOMOUNT
+# define FSPICK_NO_AUTOMOUNT     0x00000004
+#endif
+
+#ifdef FSPICK_EMPTY_PATH
+# define FSPICK_EMPTY_PATH       0x00000008
+#endif
+
+#if !defined(HAVE_FSPICK) && defined(SYS_fspick)
+static inline int fspick(int dfd, const char *pathname, unsigned int flags)
+{
+        return syscall(SYS_fspick, dfd, pathname, flags);
+}
+#endif
+
+#endif /* HAVE_MOUNTFD_API && HAVE_LINUX_MOUNT_H */
+#endif /* UTIL_LINUX_MOUNT_API_UTILS */
+