231 lines
6.1 KiB
C++
231 lines
6.1 KiB
C++
/* mount.h: mount definitions.
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Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009, 2010, 2011, 2012 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _MOUNT_H
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#define _MOUNT_H
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enum disk_type
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{
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DT_NODISK,
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DT_CDROM,
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DT_FLOPPY,
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DT_HARDDISK,
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DT_SHARE_SMB,
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DT_SHARE_NFS
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};
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disk_type get_disk_type (LPCWSTR);
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enum fs_info_type
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{
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none = 0,
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fat,
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ntfs,
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samba,
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nfs,
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netapp,
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cdrom,
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udf,
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csc_cache,
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sunwnfs,
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unixfs,
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mvfs,
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cifs,
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nwfs,
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ncfsd,
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/* Always last. */
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max_fs_type
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};
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extern struct fs_names_t {
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const char *name;
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bool block_device;
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} fs_names[];
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#define IMPLEMENT_FS_FLAG(type) \
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bool is_##type (bool val) { if (val) status.fs_type = type; return val; } \
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bool is_##type () const { return status.fs_type == type; }
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class fs_info
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{
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struct status_flags
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{
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ULONG flags; /* Volume flags */
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ULONG samba_version; /* Samba version if available */
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ULONG name_len; /* MaximumComponentNameLength */
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fs_info_type fs_type; /* Filesystem type */
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unsigned is_remote_drive : 1;
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unsigned has_acls : 1;
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unsigned hasgood_inode : 1;
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unsigned caseinsensitive : 1;
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unsigned has_buggy_open : 1;
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unsigned has_buggy_reopen : 1;
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unsigned has_buggy_fileid_dirinfo : 1;
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unsigned has_buggy_basic_info : 1;
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unsigned has_dos_filenames_only : 1;
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} status;
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ULONG sernum; /* Volume Serial Number */
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char fsn[80]; /* Windows filesystem name */
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public:
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void clear ()
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{
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memset (&status, 0 , sizeof status);
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sernum = 0UL;
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fsn[0] = '\0';
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}
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fs_info () { clear (); }
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IMPLEMENT_STATUS_FLAG (ULONG, flags)
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IMPLEMENT_STATUS_FLAG (ULONG, samba_version)
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IMPLEMENT_STATUS_FLAG (ULONG, name_len)
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IMPLEMENT_STATUS_FLAG (bool, is_remote_drive)
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IMPLEMENT_STATUS_FLAG (bool, has_acls)
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IMPLEMENT_STATUS_FLAG (bool, hasgood_inode)
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IMPLEMENT_STATUS_FLAG (bool, caseinsensitive)
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IMPLEMENT_STATUS_FLAG (bool, has_buggy_open)
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IMPLEMENT_STATUS_FLAG (bool, has_buggy_reopen)
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IMPLEMENT_STATUS_FLAG (bool, has_buggy_fileid_dirinfo)
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IMPLEMENT_STATUS_FLAG (bool, has_buggy_basic_info)
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IMPLEMENT_STATUS_FLAG (bool, has_dos_filenames_only)
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IMPLEMENT_FS_FLAG (fat)
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IMPLEMENT_FS_FLAG (ntfs)
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IMPLEMENT_FS_FLAG (samba)
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IMPLEMENT_FS_FLAG (nfs)
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IMPLEMENT_FS_FLAG (netapp)
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IMPLEMENT_FS_FLAG (cdrom)
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IMPLEMENT_FS_FLAG (udf)
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IMPLEMENT_FS_FLAG (csc_cache)
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IMPLEMENT_FS_FLAG (sunwnfs)
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IMPLEMENT_FS_FLAG (unixfs)
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IMPLEMENT_FS_FLAG (mvfs)
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IMPLEMENT_FS_FLAG (cifs)
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IMPLEMENT_FS_FLAG (nwfs)
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IMPLEMENT_FS_FLAG (ncfsd)
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fs_info_type what_fs () const { return status.fs_type; }
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bool got_fs () const { return status.fs_type != none; }
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ULONG serial_number () const { return sernum; }
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const char *fsname () const { return fsn[0] ? fsn : "unknown"; }
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bool update (PUNICODE_STRING, HANDLE) __attribute__ ((regparm (3)));
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bool inited () const { return !!status.flags; }
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};
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/* Mount table entry */
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class mount_item
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{
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public:
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/* FIXME: Nasty static allocation. Need to have a heap in the shared
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area [with the user being able to configure at runtime the max size]. */
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/* Win32-style mounted partition source ("C:\foo\bar").
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native_path[0] == 0 for unused entries. */
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char native_path[CYG_MAX_PATH];
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int native_pathlen;
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/* POSIX-style mount point ("/foo/bar") */
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char posix_path[CYG_MAX_PATH];
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int posix_pathlen;
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unsigned flags;
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void init (const char *dev, const char *path, unsigned flags);
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struct mntent *getmntent ();
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int build_win32 (char *, const char *, unsigned *, unsigned);
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};
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/* Warning: Decreasing this value will cause cygwin.dll to ignore existing
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higher numbered registry entries. Don't change this number willy-nilly.
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What we need is to have a more dynamic allocation scheme, but the current
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scheme should be satisfactory for a long while yet. */
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#define MAX_MOUNTS 64
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class reg_key;
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struct device;
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/* NOTE: Do not make gratuitous changes to the names or organization of the
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below class. The layout is checksummed to determine compatibility between
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different cygwin versions. */
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class mount_info
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{
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public:
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int nmounts;
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mount_item mount[MAX_MOUNTS];
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static bool got_usr_bin;
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static bool got_usr_lib;
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static int root_idx;
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/* cygdrive_prefix is used as the root of the path automatically
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prepended to a path when the path has no associated mount.
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cygdrive_flags are the default flags for the cygdrives. */
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char cygdrive[CYG_MAX_PATH];
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size_t cygdrive_len;
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unsigned cygdrive_flags;
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private:
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int posix_sorted[MAX_MOUNTS];
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int native_sorted[MAX_MOUNTS];
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public:
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void init ();
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int add_item (const char *dev, const char *path, unsigned flags);
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int del_item (const char *path, unsigned flags);
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unsigned set_flags_from_win32_path (const char *path);
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int conv_to_win32_path (const char *src_path, char *dst, device&,
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unsigned *flags = NULL);
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int conv_to_posix_path (PWCHAR src_path, char *posix_path,
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int keep_rel_p);
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int conv_to_posix_path (const char *src_path, char *posix_path,
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int keep_rel_p);
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struct mntent *getmntent (int x);
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int write_cygdrive_info (const char *cygdrive_prefix, unsigned flags);
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int get_cygdrive_info (char *user, char *system, char* user_flags,
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char* system_flags);
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void cygdrive_posix_path (const char *src, char *dst, int trailing_slash_p);
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int get_mounts_here (const char *parent_dir, int,
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PUNICODE_STRING mount_points,
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PUNICODE_STRING cygd);
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private:
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void sort ();
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void mount_slash ();
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void create_root_entry (const PWCHAR root);
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bool from_fstab_line (char *line, bool user);
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bool from_fstab (bool user, WCHAR [], PWCHAR);
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int cygdrive_win32_path (const char *src, char *dst, int& unit);
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};
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class dos_drive_mappings
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{
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struct mapping
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{
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mapping *next;
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size_t doslen;
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size_t ntlen;
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wchar_t *dospath;
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wchar_t *ntdevpath;
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};
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mapping *mappings;
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public:
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dos_drive_mappings ();
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~dos_drive_mappings ();
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wchar_t *fixup_if_match (wchar_t *path);
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};
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#endif
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