Add build system scaffolding and libc headers

1 files changed, 248 insertions, 0 deletions

diff --git a/include/arch/x86_64/linux/mount.h b/include/arch/x86_64/linux/mount.h
new file mode 100644
index 00000000..8e6ac41d
--- /dev/null
+++ b/include/arch/x86_64/linux/mount.h
@@ -0,0 +1,248 @@
+#ifndef _LINUX_MOUNT_H
+#define _LINUX_MOUNT_H
+
+#include <linux/types.h>
+
+/*
+ * These are the fs-independent mount-flags: up to 32 flags are supported
+ *
+ * Usage of these is restricted within the kernel to core mount(2) code and
+ * callers of sys_mount() only.  Filesystems should be using the SB_*
+ * equivalent instead.
+ */
+#define MS_RDONLY      1    /* Mount read-only */
+#define MS_NOSUID      2    /* Ignore suid and sgid bits */
+#define MS_NODEV       4    /* Disallow access to device special files */
+#define MS_NOEXEC      8    /* Disallow program execution */
+#define MS_SYNCHRONOUS 16   /* Writes are synced at once */
+#define MS_REMOUNT     32   /* Alter flags of a mounted FS */
+#define MS_MANDLOCK    64   /* Allow mandatory locks on an FS */
+#define MS_DIRSYNC     128  /* Directory modifications are synchronous */
+#define MS_NOSYMFOLLOW 256  /* Do not follow symlinks */
+#define MS_NOATIME     1024 /* Do not update access times. */
+#define MS_NODIRATIME  2048 /* Do not update directory access times */
+#define MS_BIND	       4096
+#define MS_MOVE	       8192
+#define MS_REC	       16384
+#define MS_VERBOSE                                   \
+	32768 /* War is peace. Verbosity is silence. \
+		 MS_VERBOSE is deprecated. */
+#define MS_SILENT      32768
+#define MS_POSIXACL    (1 << 16) /* VFS does not apply the umask */
+#define MS_UNBINDABLE  (1 << 17) /* change to unbindable */
+#define MS_PRIVATE     (1 << 18) /* change to private */
+#define MS_SLAVE       (1 << 19) /* change to slave */
+#define MS_SHARED      (1 << 20) /* change to shared */
+#define MS_RELATIME    (1 << 21) /* Update atime relative to mtime/ctime. */
+#define MS_KERNMOUNT   (1 << 22) /* this is a kern_mount call */
+#define MS_I_VERSION   (1 << 23) /* Update inode I_version field */
+#define MS_STRICTATIME (1 << 24) /* Always perform atime updates */
+#define MS_LAZYTIME    (1 << 25) /* Update the on-disk [acm]times lazily */
+
+/* These sb flags are internal to the kernel */
+#define MS_SUBMOUNT	(1 << 26)
+#define MS_NOREMOTELOCK (1 << 27)
+#define MS_NOSEC	(1 << 28)
+#define MS_BORN		(1 << 29)
+#define MS_ACTIVE	(1 << 30)
+#define MS_NOUSER	(1 << 31)
+
+/*
+ * Superblock flags that can be altered by MS_REMOUNT
+ */
+#define MS_RMT_MASK \
+	(MS_RDONLY | MS_SYNCHRONOUS | MS_MANDLOCK | MS_I_VERSION | MS_LAZYTIME)
+
+/*
+ * Old magic mount flag and mask
+ */
+#define MS_MGC_VAL 0xC0ED0000
+#define MS_MGC_MSK 0xffff0000
+
+/*
+ * open_tree() flags.
+ */
+#define OPEN_TREE_CLONE	  1 /* Clone the target tree and attach the clone */
+#define OPEN_TREE_CLOEXEC O_CLOEXEC /* Close the file on execve() */
+
+/*
+ * move_mount() flags.
+ */
+#define MOVE_MOUNT_F_SYMLINKS	0x00000001 /* Follow symlinks on from path */
+#define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path \
+					    */
+#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */
+#define MOVE_MOUNT_T_SYMLINKS	0x00000010 /* Follow symlinks on to path */
+#define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */
+#define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
+#define MOVE_MOUNT_SET_GROUP	0x00000100 /* Set sharing group instead */
+#define MOVE_MOUNT_BENEATH	0x00000200 /* Mount beneath top mount */
+#define MOVE_MOUNT__MASK	0x00000377
+
+/*
+ * fsopen() flags.
+ */
+#define FSOPEN_CLOEXEC 0x00000001
+
+/*
+ * fspick() flags.
+ */
+#define FSPICK_CLOEXEC		0x00000001
+#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
+#define FSPICK_NO_AUTOMOUNT	0x00000004
+#define FSPICK_EMPTY_PATH	0x00000008
+
+/*
+ * The type of fsconfig() call made.
+ */
+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, /* Create new or reuse existing superblock */
+	FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */
+	FSCONFIG_CMD_CREATE_EXCL = 8, /* Create new superblock, fail if reusing
+					 existing superblock */
+};
+
+/*
+ * fsmount() flags.
+ */
+#define FSMOUNT_CLOEXEC 0x00000001
+
+/*
+ * Mount attributes.
+ */
+#define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */
+#define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */
+#define MOUNT_ATTR_NODEV \
+	0x00000004 /* Disallow access to device special files */
+#define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */
+#define MOUNT_ATTR__ATIME \
+	0x00000070 /* Setting on how atime should be updated */
+#define MOUNT_ATTR_RELATIME \
+	0x00000000 /* - Update atime relative to mtime/ctime. */
+#define MOUNT_ATTR_NOATIME     0x00000010 /* - Do not update access times. */
+#define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */
+#define MOUNT_ATTR_NODIRATIME \
+	0x00000080 /* Do not update directory access times */
+#define MOUNT_ATTR_IDMAP \
+	0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */
+#define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */
+
+/*
+ * mount_setattr()
+ */
+struct mount_attr {
+	__u64 attr_set;
+	__u64 attr_clr;
+	__u64 propagation;
+	__u64 userns_fd;
+};
+
+/* List of all mount_attr versions. */
+#define MOUNT_ATTR_SIZE_VER0 32 /* sizeof first published struct */
+
+/*
+ * Structure for getting mount/superblock/filesystem info with statmount(2).
+ *
+ * The interface is similar to statx(2): individual fields or groups can be
+ * selected with the @mask argument of statmount().  Kernel will set the @mask
+ * field according to the supported fields.
+ *
+ * If string fields are selected, then the caller needs to pass a buffer that
+ * has space after the fixed part of the structure.  Nul terminated strings are
+ * copied there and offsets relative to @str are stored in the relevant fields.
+ * If the buffer is too small, then EOVERFLOW is returned.  The actually used
+ * size is returned in @size.
+ */
+struct statmount {
+	__u32 size;	    /* Total size, including strings */
+	__u32 mnt_opts;	    /* [str] Options (comma separated, escaped) */
+	__u64 mask;	    /* What results were written */
+	__u32 sb_dev_major; /* Device ID */
+	__u32 sb_dev_minor;
+	__u64 sb_magic;	     /* ..._SUPER_MAGIC */
+	__u32 sb_flags;	     /* SB_{RDONLY,SYNCHRONOUS,DIRSYNC,LAZYTIME} */
+	__u32 fs_type;	     /* [str] Filesystem type */
+	__u64 mnt_id;	     /* Unique ID of mount */
+	__u64 mnt_parent_id; /* Unique ID of parent (for root == mnt_id) */
+	__u32 mnt_id_old;    /* Reused IDs used in proc/.../mountinfo */
+	__u32 mnt_parent_id_old;
+	__u64 mnt_attr;	       /* MOUNT_ATTR_... */
+	__u64 mnt_propagation; /* MS_{SHARED,SLAVE,PRIVATE,UNBINDABLE} */
+	__u64 mnt_peer_group;  /* ID of shared peer group */
+	__u64 mnt_master;      /* Mount receives propagation from this ID */
+	__u64 propagate_from;  /* Propagation from in current namespace */
+	__u32 mnt_root;	       /* [str] Root of mount relative to root of fs */
+	__u32 mnt_point;       /* [str] Mountpoint relative to current root */
+	__u64 mnt_ns_id;       /* ID of the mount namespace */
+	__u32 fs_subtype;      /* [str] Subtype of fs_type (if any) */
+	__u32 sb_source;       /* [str] Source string of the mount */
+	__u32 opt_num;	       /* Number of fs options */
+	__u32 opt_array;       /* [str] Array of nul terminated fs options */
+	__u32 opt_sec_num;     /* Number of security options */
+	__u32 opt_sec_array;   /* [str] Array of nul terminated security options
+				*/
+	__u64 supported_mask;  /* Mask flags that this kernel supports */
+	__u32 mnt_uidmap_num;  /* Number of uid mappings */
+	__u32 mnt_uidmap; /* [str] Array of uid mappings (as seen from callers
+			     namespace) */
+	__u32 mnt_gidmap_num; /* Number of gid mappings */
+	__u32 mnt_gidmap; /* [str] Array of gid mappings (as seen from callers
+			     namespace) */
+	__u64 __spare2[43];
+	char str[]; /* Variable size part containing strings */
+};
+
+/*
+ * Structure for passing mount ID and miscellaneous parameters to statmount(2)
+ * and listmount(2).
+ *
+ * For statmount(2) @param represents the request mask.
+ * For listmount(2) @param represents the last listed mount id (or zero).
+ */
+struct mnt_id_req {
+	__u32 size;
+	__u32 spare;
+	__u64 mnt_id;
+	__u64 param;
+	__u64 mnt_ns_id;
+};
+
+/* List of all mnt_id_req versions. */
+#define MNT_ID_REQ_SIZE_VER0 24 /* sizeof first published struct */
+#define MNT_ID_REQ_SIZE_VER1 32 /* sizeof second published struct */
+
+/*
+ * @mask bits for statmount(2)
+ */
+#define STATMOUNT_SB_BASIC	 0x00000001U /* Want/got sb_... */
+#define STATMOUNT_MNT_BASIC	 0x00000002U /* Want/got mnt_... */
+#define STATMOUNT_PROPAGATE_FROM 0x00000004U /* Want/got propagate_from */
+#define STATMOUNT_MNT_ROOT	 0x00000008U /* Want/got mnt_root  */
+#define STATMOUNT_MNT_POINT	 0x00000010U /* Want/got mnt_point */
+#define STATMOUNT_FS_TYPE	 0x00000020U /* Want/got fs_type */
+#define STATMOUNT_MNT_NS_ID	 0x00000040U /* Want/got mnt_ns_id */
+#define STATMOUNT_MNT_OPTS	 0x00000080U /* Want/got mnt_opts */
+#define STATMOUNT_FS_SUBTYPE	 0x00000100U /* Want/got fs_subtype */
+#define STATMOUNT_SB_SOURCE	 0x00000200U /* Want/got sb_source */
+#define STATMOUNT_OPT_ARRAY	 0x00000400U /* Want/got opt_... */
+#define STATMOUNT_OPT_SEC_ARRAY	 0x00000800U /* Want/got opt_sec... */
+#define STATMOUNT_SUPPORTED_MASK 0x00001000U /* Want/got supported mask flags \
+					      */
+#define STATMOUNT_MNT_UIDMAP 0x00002000U     /* Want/got uidmap... */
+#define STATMOUNT_MNT_GIDMAP 0x00004000U     /* Want/got gidmap... */
+
+/*
+ * Special @mnt_id values that can be passed to listmount
+ */
+#define LSMT_ROOT	  0xffffffffffffffff /* root mount */
+#define LISTMOUNT_REVERSE (1 << 0)	     /* List later mounts first */
+
+#endif /* _LINUX_MOUNT_H */