zsh/Completion/Unix/Command/_mount

#compdef mount umount

if [[ "$OSTYPE" == cygwin ]]; then
  if [[ "$service" == mount ]] ; then
    _arguments -s \
      - mount \
	'(-b -t --text --binary)'{-b,--binary}'[Unix line endings LF]' \
	'(-f --force)'{-f,--force}'[be silent]' \
	'(-s -u --user --system)'{-s,--system}'[system-wide mount point]' \
	'(-t -b --binary --text)'{-t,--text}'[DOS line endings CR-LF]' \
	'(-u -s --system --user)'{-u,--user}'[user private mount point]' \
	'(-x -X --executable --cygwin-executable)'{-x,--executable}'[all files under mountpoint are executables]' \
	'(-x -X --executable --cygwin-executable)'{-X,--cygwin-executable}'[all files under mountpoint are cygwin executables]' \
	':Windows path:' \
	':Unix path:_path_files -P/ -W "(/)" -/' \
      - control \
	'(-)'{-i,--import-old-mounts}'[import old mounts]' \
	'(-)'{-p,--show-cygdrive-prefix}'[show cygdrive prefix]' \
	'(-)'{-c,--change-cygdrive-prefix}'[cygdrive prefix]:cygdrive prefix (POSIX path):_files -P/ -W "(/)" -/' \
  
    return
  else
    local line
    local -a wpaths upaths
    mount | while read -r line; do
      [[ $line == ?:\ * ]] && continue
      wpaths=($wpaths ${line%% on*})
      upaths=($upaths ${${line##*on }%% type*})
    done
    _alternative \
      'windowspath:Windows path:compadd -a wpaths' \
      'unixpath:Unix path:compadd -a upaths'
    return
  fi
fi

# This is table-driven: the tables for the values for the different
# file system types are directly below. The tables describing the
# arguments for the `mount' command for different operating systems
# are below these table.

local curcontext="$curcontext" state line suf ret=1
local args deffs=iso9660 tmp typeops=-t _nfs_access _nfs_ufs

typeset -A opt_args

if (( ! $+_fs_any )); then

  # These are tables describing the possible values and their
  # arguments for the `-o' option. There is one array per 
  # file system type (only for those that accept more values
  # than those in the `_fs_any' array). The elements of the
  # array are used as arguments to `_values'. The first tables
  # are used by several systems while system specific tables are  
  # (re)defined in a "$OSTYPE" case.

  _fs_any=(
    '(rw)ro[mount file system read-only]'
    '(ro)rw[mount file system read-write]'
  )
  _nfs_access=(
    'acregmin[specify cached file attributes minimum hold time]:cached file attributes minimum hold time'
    'acregmax[specify cached file attributes maximum hold time]:cached file attributes maximum hold time'
    'acdirmin[specify cached directory attributes minimum hold time]:cached directory attributes minimum hold time'
    'acdirmax[specify cached directory attributes maximum hold time]:cached directory attributes maximum hold time'
    "actimeo[set all attributes' cache timeout]:cache timeout"
  )
  _fs_nfs=(
    'rsize[specify read buffer size]:read buffer size:(8192)'
    'wsize[specify write buffer size]:write buffer size:(8192)'
    '(soft)hard[hang process on server crash (so to say)]'
    '(hard)soft[allow time out on server crash]'
    '(nolock)lock[use locking]'
    "(lock)nolock[don't use locking]"
    'timeo[specify initial timeout for UDP]:initial timeout for UDP'
    'retrans[set number of NFS retransmissions]:number of NFS retransmissions'
    'retry[specify number of mount failure retries]:mount failure retries'
    '(fg)bg[retry in the background]'
    '(bg)fg[retry in the foreground]'
    '(nintr)intr[allow operations to be interrupted]'
    '(intr)nintr[prevent operations from being interrupted]'
    '(nfsv3)nfsv2[use NFS version 2]'
    '(nfsv2)nfsv3[use NFS version 3]'
    'proto[specify protocol]:protocol:(udp tcp)'
    'port[specify server port number]:server port number'
    'proplist[allow property lists]'
    "$_nfs_access[@]"
    "nocto[don't get fresh attributes on open]"
    "noac[don't set attribute caching]"
  )
  _nfs_ufs=(
    '(nodev)dev[interpret devices]'
    "(dev)nodev[don't interpret devices]"
    '(nosuid)suid[use suid and sgib bits]'
    '(suid)nosuid[ignore suid and sgid bits]'
    '(nosync)sync[do I/O synchronously]'
    '(sync)nosync[do all I/O asynchronously]'
    '(noexec)exec[permit execution of binaries]'
    "(exec)noexec[don't allow execution of binaries]"
    '(nogrpid)grpid[new file gets group ID of directory]'
    '(grpid)nogrpid[new file gets fsgid of current process]'
  )
  _fs_ufs=(
    'dirty[allow mount even if not cleanly unmounted]'
    "$_nfs_ufs[@]"
  )

  case "$OSTYPE" in
  aix*)
    _fs_any=(
      'bsy[prevent mount over cwd of process]'
      'log[logical volume to log operations]:logical volume name'
      'nodev[cannot open devices from mount]'
      'nosuid[prevent running setuid/setgid from mount]'
      "$_fs_any[@]"
    )
    
    _fs_nfs=(
      '(fg)bg[mount in background]'
      '(bg)fg[mount in foreground]'
      'vers[NFS version]:NFS version:(2 3)'
      'proto[specify transport protocol]'
      'retry[number of retries]:no. of retries'
      'rsize[read buffer size]:read buffer size'
      'wsize[write buffer size]:write buffer size'
      'llock[local locking]'
      'timeo[time-out period]:time-out period'
      'retrans[NFS transmissions]:no. of NFS transmissions'
      'port[IP port no]:IP port no'
      '(hard)soft[error on no server response]'
      '(soft)hard[retry pending server response]'
      '(nointr)intr[allow keyboard interrupts on hard mount]'
      '(intr)nointr[disallow keyboard interrupts on hard mount]'
      'posix[exchange pathconf info on NFS version 2 mount]'
      'secure[use DES encryption]'
      'grpid[inherit group id of parent directory]'
      "(acl)noacl[don't use access control lists]"
      '(noacl)acl[use access control lists for this mount]'
      'noac[no attribute or directory caching]'
      'shortdev[server lack support for 32-bit device special files]'
      "$_nfs_access[@]"
    )
    ;;
  irix*)
    _fs_any=(
      'nodev[cannot open devices from mount]'
      'nosuid[prevent running setuid/setgid from mount]'
      'grpid[inherit group id of parent directory]'
      "$_fs_any[@]"
    )
    
    _fs_efs=(
      'raw[raw device pathname to filesystem]:raw device pathname:->devordir'
      '(nofsck)fsck[fsck should check this filesystem by default]'
      '(fsck)nofsck[fsck should not check this filesystem by default]'
      '(noquota)quota[turn on quotas]'
      '(quota)noquota[turn off quotas]'
      'lbsize[no of bytes transferred in each operation]:bytes'
    )
    
    _fs_iso9660=(
      'setx[set execute permissions on every file]'
      'notranslate[don'\''t translate filenames]'
      'cache[no of 2048 blocks for directory cache]:cache size'
      'noext[ignore rock ridge extensions]'
      '(nosusp)susp[enable system use sharing protocol]'
      '(susp)nosusp[disable system use sharing protocol]'
      '(norrip)rrip[enable rock ridge extensions]'
      '(rrip)norrip[disable rock ridge extensions]'
      'nmconv[specify filename translation]:filename translation:((c\:no\ translation l\:to\ lowercase m\:suppress\ version\ no))'
    )
      
    _fs_nfs=(
      '(fg)bg[mount in background]'
      '(bg)fg[mount in foreground]'
      'retry[number of retries]:no. of retries'
      'rsize[read buffer size]:read buffer size'
      'wsize[write buffer size]:write buffer size'
      'timeo[time-out period]:time-out period'
      'retrans[NFS transmissions]:no. of NFS transmissions'
      'port[IP port no]:IP port no'
      '(hard)soft[error on no server response]'
      '(soft)hard[retry pending server response]'
      'intr[allow keyboard interrupts on hard mount]'
      'noac[no attribute caching]'
      'private[use local locking and do not flush on last close]'
      'symttl[time-to-live of cached symbolic links]:seconds'
      "$_nfs_access[@]"
    )
    
    _fs_cachefs=(
      'backfstype[type of the back file system]:back file system type:(efs nfs iso9660 dos hfs cachefs)'
      'backpath[specify back file system location]:back file system location:_files -/'
      'cachedir[name of the cache directory]:name of cache directory:_files -/'
      'cacheid[cache ID]:cache ID'
      '(write-around)non-shared[cache not shared]'
      '(non-shared)write-around[cache shared]'
      'noconst[disable consistency checking]'
      'local-access[check permissions locally]'
      'purge[purge any cached information]'
      "$_nfs_access[@]"
    ) 
    
    ;;  
  solaris*)
    _fs_s5fs=(
      'remount[remount file system]'
      '(suid)nosuid[ignore suid and sgid bits]'
      '(nosuid)suid[use suid and sgib bits]'
    )
    _fs_ufs=(
      "(atime)noatime[don't update access time]"
      'f[fake an /etc/mnttab entry]'
      "m[don't make an /etc/mnttab entry]"
      '(noforcedirection)forcedirection[do I/O synchronously]'
      '(forcedirection)noforcedirection[do all I/O asynchronously]'
      '(nointr)intr[allow operations to be interrupted]'
      '(intr)nointr[prevent operations from being interrupted]'
      "(nolargefiles)largefiles[don't restrict file size]"
      '(largefiles)nolargefiles[restrict file size]'
      '(nologging)logging[log transactions]'
      '(logging)nologging[log transactions]'
      'onerror[action to recover from error]:action:(panic lock umount)'
      'quota[turn on quotas]'
      '(ro rw)rq[mount file system read-write with quotas]'
      "$_fs_s5fs[@]"
    )
    _fs_tmpfs=(
      'size[set file system size]:size'
    )
    _fs_pcfs=(
      '(nofoldcase)foldcase[force filenames to lowercase]'
      "(foldcase)nofoldcase[don't force filenames to lowercase]"
    )
    _fs_hsfs=(
      'nrr[no rock ridge]'
      'notraildot[no trail dot when no extension]'
      "nomaplcase[don't force lowercase]"
      'nosuid[ignore suid and sgid bits]'
    )
    _fs_nfs=(
      '(fg)bg[retry in the background]'
      '(bg)fg[retry in the foreground]'
      '(nogrpid)grpid[new file gets group ID of directory]'
      '(grpid)nogrpid[new file gets fsgid of current process]'
      '(nointr)intr[allow operations to be interrupted]'
      '(intr)nointr[prevent operations from being interrupted]'
      '(sec secure)kerberos[use kerberos authentication]'
      'noac[no attribute caching]'
      'port[server IP port number]:port'
      'posix[posix semantics]'
      'proto[specify protocol]:protocol:'\("$(grep -v '^#' /etc/netconfig 2> /dev/null | cut -d ' ' -f 1)"\)
      'public[force public file handle]'
      '(noquota)quota[enable quotas]'
      '(quota)noquota[disable quotas]'
      'timeo[specify initial timeout for UDP]:initial timeout for UDP'
      'retrans[set number of NFS retransmissions]:number of NFS retransmissions:(5)'
      'retry[specify number of mount failure retries]:mount failure retries:(10000)'
      'rsize[specify read buffer size]:read buffer size:(8192)'
      'wsize[specify write buffer size]:write buffer size:(8192)'
      '(kerberos secure)sec[set the security mode]:security mode:(sys dh krb4 none)'
      '(kerberos sec)secure[use Diffie-Hellman public key system]'
      'vers[set NFS version number]:NFS version number:(2 3)'
      "$_nfs_access[@]"
      "$_fs_s5fs[@]"
    ) 
    _fs_cachefs=(
      'backfstype[type of the back file system]:back file system type:(nfs hsfs)'
      'backpath[specify back file system location]:back file system location:_files -/'
      'cacheid[specify a cache ID]:cache ID'
      'local-access[check permissions locally]'
      'noconst[disable cache consistency checking]'
      'purge[purge any cached information]'
      '(suid)nosuid[ignore setuid and setgid bits]'
      '(nosuid)suid[use setuid and setgid bits]'
      '(write-around)non-shared[purge cache on writes]'
      '(non-shared)write-around[keep file in cache on writes]'
      "$_nfs_access[@]"
    )
    ;;
  osf*)
    _fs_advfs=(
      '(ro rw)rq[mount file system read-write]'
      'dual[allow mount even if same domain ID as already mounted domain]'
      'sync[do I/O synchronously]'
    )
    _fs_cdfs=(
      '(nodefperm)defperm[ignore permission bits]'
      '(defperm)defperm[use permission bits]'
      'noversion[strip off version extension]'
      'rrip[use RRIP extensions]'
    )
    _fs_nfs=(
      "$_nfs_ufs[@]"
      "$_fs_nfs[@]"
    )
    ;;
  linux*)
    _fs_any=(
      '(sync)async[do all I/O asynchronously]'
      '(noatime)atime[update access time]'
      '(noauto)auto[can be mounted with -a]'
      '(rw suid dev exec auto nouser async)defaults[use default options]'
      '(nodev)dev[interpret devices]'
      '(noexec)exec[permit execution of binaries]'
      "(atime)noatime[don't update access time]"
      '(auto)noauto[can only be mounted explicitly]'
      "(dev)nodev[don't interpret devices]"
      "(exec)noexec[don't allow execution of binaries]"
      '(suid)nosuid[ignore suid and sgid bits]'
      '(user)nouser[can only be mounted by root]'
      'remount[mount already mounted file system]'
      '(rw)ro[mount file system read-only]'
      '(ro)rw[mount file system read-write]'
      '(nosuid)suid[use suid and sgib bits]'
      '(async)sync[do I/O synchronously]'
      'dirsync[perform directory updates synchronously]'
      'loop[use loopback device]:loopback device:_files'
      'encryption[enable encryption]:cypher'
      'keybits[set number of bits in encryption key]:key size:(64 128 160 192 256)'
      'offset[specify data start for loopback mount]:offset (bytes)'
    )
    _fs_affs=(
      'uid[set owner of root]:user ID'
      'gid[set group of root]:group ID'
      'setuid[set owner of all files]:user ID'
      'setgid[set group of all files]:group ID'
      'mode[set file permissions]:file permission bits'
      "protect[don't allow changes to permissions]"
      'usemp[set owner of root to owner of mount point]'
      'verbose[print message per mount]'
      'prefix[prefix before volume name when following link]:prefix string'
      "volume[prefix before '/' when following link]:prefix string"
      'reserved[set number of unused blocks at start of device]:number of unused blocks'
      'root[specify location of the root block]:root block location'
      'bs[specify block size]:block size:(512 1024 2048 4192)'
    )
    _fs_ext2=(
      '(minixdf)bsddf[select bsddf behavior]'
      '(bsddf)minixdf[select bsddf behavior]'
      '(nocheck)check[set checking level]::checking level:((normal\:check\ inode\ and\ block\ bitmaps\ on\ mount strict\:check\ on block\ deallocation none\:no\ checking))'
      'debug[print debugging info upon each (re)mount]'
      'errors[specify behavior on error]:error behavior:((continue\:ignore\ errors remount-ro\:remount\ file\ system\ read-only panic\:panic\ and\ halt\ system))'
      '(nogrpid bsdgroups sysvgroups)grpid[new file gets group ID of directory]'
      '(grpid nogrpid sysvgroups)bsdgroups[new file gets group ID of directory]'
      '(grpid bsdgroups sysvgroups)nogrpid[new file gets fsgid of current process]'
      '(grpid bsdgroups nogrpid)sysvgroups[new file gets fsgid of current process]'
      'resgid[specify access to reserved space (group ID)]:group ID'
      'resuid[specify access to reserved space (user ID)]:user ID'
      'sb[specify super block number]:super block number'
      'nouid32[disable 32-bit UIDs and GIDs]'
    )
    _fs_fat=(
      'blocksize[specify block size]:block size:(512 1024 2048)'
      'uid[specify user ID of all files]:user ID'
      'gid[specify group ID of all files]:group ID'
      'umask[specify umask]:umask value (octal)'
      'dmask[specify umask for directories only]:umask value (octal)'
      'fmask[specify umask for files only]:umask value (octal)'
      'check[specify checking level]:checking level:((relaxed\:accept\ upper\ and\ lower\ case,\ truncate\ long\ name normal\:like\ '"'\`'"'relaxed'"\\'"',\ but\ reject\ special\ characters strict\:like\ '"'\`'"'normal'"\\'"',\ but\ no\ long\ parts))'
      'codepage[specify codepage for converting filenames to short form]:codepage'
      'conf[specify CR/NL conversion]:CR/NL conversion mode:((binary\:no\ translation text\:conversion\ on\ all\ files auto\:perform\ translation\ on\ file\ without\ binary\ extension))'
      'conv[convert form of text files]:mode:(binary text auto)'
      'cvf_format[use specified compressed volume format module]:module'
      'cvf_option[pass option to CVF module]:option'
      'debug[debug mode]'
      'fat[specify fat type]:fat type (bit):(12 16 32)'
      'iocharset[character set to use for converting from 8 bit to unicode]:character set'
      'quiet[quiet mode]'
    )
    _fs_ext3=(
      "$_fs_ext2[@]"
      'journal[update fs journal]:update or inode number:(update)'
      'noload[do not load journal]'
      'data[specify mode for data]:journalling mode:(journal ordered writeback)'
    )
    _fs_msdos=( "$_fs_fat[@]" )
    _fs_umsdos=( "$_fs_fat[@]" )
    _fs_vfat=( "$_fs_fat[@]"
      '(utf8)uni_xlate[translate unicode to escaped sequences]'
      'posix[allow file names only differing in case]'
      'nonumtail[try short name before number extension]'
      '(uni_xlate)utf8[mount the filesystem in UTF8 mode]'
      'shortname[specify handling of 8.3 filenames]:mode:(lower win95 winnt mixed)'
    )
    _fs_hpfs=(
      'uid[specify user ID of all files]:user ID'
      'gid[specify group ID of all files]:group ID'
      'umask[specify umask]:umask value (octal)'
      'case[specify file name conversion]:file name conversion:((lower\:convert\ to\ lower\ case asis\:no\ conversion))'
      'conv[specify CR elimination]:CR elimination:((binary\:no\ elimination test\:delete\ CRs\ \(e.g.\ before\ NL\) auto\:sometimes\ yes,\ sometimes\ not))'
      "nocheck[don't abort mount on consistency check failure]"
    )
    _fs_iso9660=(
      'norock[disable Rock Ridge extensions]'
      'nojoliet[disable Microsoft Joliet extensions]'
      'check[specify file name conversion]:file name conversion:((relaxed\:convert\ to\ lower\ case\ before\ lookup strict\:no\ conversion))'
      'uid[specify user ID of all files]:user ID'
      'gid[specify group ID of all files]:group ID'
      'map[specify non-Rock Ridge name conversion]:file name conversion:((normal\:map\ upper\ to\ lower,\ ignore\ \;1,\ map\ \;\ to\ . off\:no\ conversion))'
      'mode[specify permissions]:file access permissions'
      'unhide[show hidden and associated files]'
      'block[specify block size]:block size:(512 1024 2048)'
      'cruft[ignore high bits of file length]'
      'session[select session number on multisession CD]:session'
      'sbsector[specify starting sector]:sector'
      'iocharset[character set when converting from 8 bit to unicode (Joliet)]:character set'
      'utf8[mount the filesystem in UTF8 mode (Joliet)]'
    )
    _fs_ntfs=(
      'iocharset[character set to use when returning file names]:character set'
      '(uni_xlate)utf8[use UTF-8 for converting file names]'
      '(utf8)uni_xlate[translate unicode to escaped sequences]:type:(0 1 2)'
      'posix[distinguish upper and lower case]:state:((0\:off 1\:on))'
      'uid[specify user ID of all files]:user ID'
      'gid[specify group ID of all files]:group ID'
      'umask[specify umask]:umask value (octal)'
    )      
    _fs_reiserfs=(
      'conv[mount 3.5 fs using 3.6 format for new objects]'
      'hash[choose hash type]:hash function:(rupasov tea r5 detect)'
      '(no_unhashed_relocation)hashed_relocation[tune the block allocator]'
      'noborder[disable border allocator algorithm]'
      'nolog[disable journalling]'
      'notail[disable packing of files into the tree]'
      '(hashed_relocation)no_unhashed_relocation[tune the block allocator]'
      'replayonly[replay but do not mount]'
      'resize[assume the device has this many blocks]:number of blocks'
    )
    _fs_smbfs=( "$_fs_nfs[@]" )
    _fs_tmpfs=(
      'size[set file system size]:size (bytes)'
      'mode[set root directory permissions]:mode'
      'nr_blocks[set number of blocks]:blocks'
      'nr_inodes[set number of inodes]:inodes'
    )
    _fs_udf=(
      'uid[specify user ID of all files]:user ID'
      'gid[specify group ID of all files]:group ID'
      'umask[specify umask]:umask value (octal)'
      'unhide[show hidden and associated files]'
      'undelete[show deleted files]'
      'bs[set the block size]:block size:2048'
      'novrs[skip volume sequence recognition]'
      'session[set the CDROM session]:session'
      'anchor[override standard anchor location]:anchor location:256'
      'lastblock[set the last block of the file system]:last block'
    )
    _fs_ufs=(
      'ufstype[set ufs type]:ufs type:(old 44bsd sun sunx86 nextstep nextstep-cd openstep)'
      'onerror[set behaviour on error]:behaviour on error:(panic lock umount repair)'
    )
    _fs_xfs=(
      'biosize[specify preferred buffered I/O size]:base 2 logarithm:((13:8K 14:16K 15:32K 16:64K))'
      '(xdsm)dmapi[enable DMAPI event callouts]'
      '(dmapi)xdsm[enable DMAPI event callouts]'
      'logbufs[set number of in-memory log buffers]:(2 3 4 5 6 7 8)'
      'logbsize[set size of each in-memory log buffer]:(16384 32768)'
      'logdev[use external log device]:_files'
      'rtdev[use external realtime device]:_files'
      'noalign[do not align data allocations at stripe unit boundaries]'
      'noatime[do not update atime on reads]'
      'norecovery[do not run log recovery]'
      'osyncisdsync[make O_SYNC behave as O_DSYNC]'
      '(usrquota uqnoenforce)quota[enable user quotas]'
      '(quota uqnoenforce)usrquota[enable user quotas]'
      '(quota usrquota)uqnoenforce[enable user quotas without enforcement]'
      '(gqnoenforce)grpquota[enable group quotas]'
      '(grpquota)gqnoenforce[enable group quotas without enforcement]'
      'sunit[specify stripe unit]:size'
      'swidth[specify stripe width]:size'
    )
    ;;
  freebsd*)
    _fs_any=(
      '(sync)async[do all I/O asynchronously]'
      'current[use current options on already mounted file system]'
      'force[force R/W mount of unclean filesystem]'
      'fstab[use options listed in /etc/fstab]'
      'noasync[do I/O synchronously]'
      "noatime[don't update access time]"
      'noauto[can only be mounted explicitly]'
      'noclusterr[disable read clustering]'
      'noclusterw[disable write clustering]'
      "nodev[don't interpret devices]"
      "noexec[don't allow execution of binaries]"
      'nosuid[ignore suid and sgid bits]'
      "nosymfollow[don't follow symlinks]"
      'rdonly[mount file system read-only]'
      '(async)sync[do all I/O synchronously]'
      'suiddir[allow suid bits on directories]'
      'update[change status of already mounted filesystem]'
      'union[cause the namespace at the mount point to appear as the union of the mounted filesystem and the existing directory]'
    )
    _fs_iso9660=(
      'extatt[enable use of extended attributes]'
      "gens[don't strip version number on files]"
      "joliet[don't use any Joliet extensions]"
      "rrip[don't use any Rockridge extensions]"
      'strictjoliet[relax checking for Supplementary Volume Descriptor Flags field which is set to a wrong value on some Joliet formatted disks]'
    )
    _fs_std=(
      "nodev[don't interpret devices]"
      "noexec[don't allow execution of binaries]"
      'nosuid[ignore suid and sgid bits]'
      'rdonly[mount file system read-only]'
      'union[cause the namespace at the mount point to appear as the union of the mounted filesystem and the existing directory]'
    )
    _fs_devfs=( "$_fs_std[@]" )
    _fs_fdesc=( "$_fs_std[@]" )
    _fs_kernfs=( "$_fs_std[@]" )
    _fs_linprocfs=( "$_fs_std[@]" )
    _fs_procfs=( "$_fs_std[@]" )
    _fs_msdos=(
      'shortnames[]'
      'longnames[]'
      'nowin95[]'
    )
    ;;
  esac
fi

if [[ "$service" = mount ]]; then

  # Here are the tests and tables for the arguments and options for
  # the `mount' program. This should set the `deffs' parameter if
  # the default file system type is not `iso9660' (it should be set
  # to the name of the default file system type), and set 'typeops'
  # to the mount  option for file system type selection when it is
  # not '-t'.

  case "$OSTYPE" in
  aix*)
    args=( -s
      '(:)-a[mount all filesystems in /etc/fstab]'
      '-f[forced mount]'
      '-n[remote node]:remote node:_hosts'
      '-p[mount as removable file system]'
      '-r[mount read-only]'
      '-t[specify file system type]:file system type:_file_systems'
      '-o[specify file system options]:file system option:->fsopt'
      '-v[filesystem defined by /etc/vfs]:VfsName'
      ':dev or dir:->devordir'
      ':mount point:_files -/'
    )
    deffs=jfs
    ;;
  irix*)
    args=( -s
      '-a[mount all filesystems in /etc/fstab]'
      '-b[mount all filesystems in /etc/fstab except those listed]:list of directories:_dir_list -s,'
      '-c[check any dirty filesystems before mounting]'
      "-f[fake a new /etc/mtab entry, but don't mount any filesystems]"
      '-h[mount all filesystems associated with host]:hostnames:_hosts'
      '-n[mount filesystem without making entry in /etc/mtab]'
      '-o[specify file system options]:file system option:->fsopt'
      '-p[print list of mounted filesystems in format suitable for /etc/fstab]'
      '-r[mount read-only]'
      '-t[specify file system type]:file system type:_file_systems'
      '-v[verbose]'
      '-M[use alternate mtab]:alternate mtab:_files'
      '-P[with -p, prepend prefix to paths]:prefix'
    )
    deffs=efs
    ;;
  linux*)
    args=( -s
      '(- :)-h[show help]'
      '(- :)-V[show version]'
      '(-V -h)-v[verbose mode]'
      '(-V -h)-p[specify file descriptor from which to read passphrase]:file descriptor:_file_descriptors'
      '(-V -h -o :)-a[mount all filesystems in fstab]'
      '(-V -h)-F[fork off one child per device]'
      '(-V -h)-f[fake mount]'
      "(-V -h)-i[don't call /sbin/mount.<fs> helper]"
      '(-V -h)-l[output ext2, ext3 and XFS labels]'
      "(-V -h)-n[don't write /etc/mtab]"
      '(-V -h)-s[tolerate sloppy mount options]'
      '(-V -h -w)-r[mount read-only]'
      '(-V -h -r)-w[mount read/write]'
      '(-V -h)-L[mount partition with specified label]:label'
      '(-V -h)-U[mount partition with specified uuid]:uuid'
      '(-V -h)-t[specify file system type]:file system type:->fslist'
      '(-V -h)-O[with -a, restrict filesystems by options]:file system option:->fsopt'
      '(-V -h -a -O)-o[specify file system options]:file system option:->fsopt'
      '(: -)--bind[remount part of filesystem elsewhere]:old directory:_directories:new directory:_directories'
      '(: -)--rbind[remount part of filesystem including submounts elsewhere]:old directory:_directories:new directory:_directories'
      '(: -)--move[move part of filesystem elsewhere]:old directory:_directories:new directory:_directories'
      ':dev or dir:->devordir'
      ':mount point:_files -/'
    )
    ;;
  osf*)
    args=( -s
      '(-o :)-a[mount all filesystems in fstab]'
      '-d[mount even if not unmounted]'
      '-e[list all mount points]'
      '-f[fake mount]'
      '-l[display values of all file system options]'
      '-t[specify file system type]:file system type:_file_systems'
      '-o[specify file system options]:file system option:->fsopt'
      '-u[remount file system]'
      '-r[mount read-only]'
      '-w[mount read/write]'
      '-v[verbose]'
      ':dev or dir:->devordir'
      ':mount point:_files -/'
    )
    deffs=cdfs
    ;;
  solaris*)
    args=( -s
      '(-p -v)-a[mount all filesystems in fstab]'
      '(-p -v)-F[specify file system type]:file system type:_file_systems'
      '(-a -v)-p[print mounted file systems]'
      '(-p -a)-v[print mounted file systems verbosely]'
      '(-p -v)-V[echo command-line but do not execute]'
      "(-p -v)-m[don't write /etc/mnttab]"
      '(-p -v)-g[mount globally]'
      '(-p -v)-o[specify file system options]:file system option:->fsopt'
      '(-p -v)-O[overlay mount]'
      '(-p -v)-r[mount read-only]'
      ':dev or dir:->devordir'
      ':mount point:_files -/'
    )
    deffs=hsfs
    typeops=-F
    ;;
  freebsd*)
    args=( -s
      '(:)-a[mount all filesystems in fstab]'
      '-d[cause everything to be done except for the actual system call]'      
      '-f[forced mount]'
      '-o[specify file system options]:file system option:->fsopt'
      '-p[print mounted file systems]'
      '-r[mount readonly]'
      '-t[specify file system type]:file system type:->fslist'
      '-u[change status of already mounted filesystem]'
      '-v[verbose mode]'
      '-w[mount read/write]'
      ':dev or dir:->devordir'
      ':mount point:_files -/'
    )
    deffs=ufs
    ;;
  *)
    # Default for all other systems. Dunno.

    args=( -s
      '(-o :)-a[mount all filesystems in fstab]'
      '-t[specify file system type]:file system type:_file_systems'
      '-o[specify file system options]:file system option:->fsopt'
      '-f[fake mount]'
      ':dev or dir:->devordir'
      ':mount point:_files -/'
    )
    deffs=ufs
    ;;
  esac

  _arguments -C "$args[@]" && ret=0

else

  # Completion for umount.

  case "$OSTYPE" in
    aix*)
      args=(
	'(*)-a[unmount all mounted file systems]'
	'-f[force unmount]'
	'-n[remote node]:remote node:_hosts'
	'-t[specify file system type]:file system type:_file_systems'
	'*:dev or dir:->udevordir'
      )
    ;;
    irix*)
      args=(
	'-a[unmount all mounted file systems]'
	'-b[unmount all filesystems in /etc/fstab except those listed]:list of directories:_dir_list -s,'
	'-h[unmount all filesystems associated with host]:hostnames:_hosts'
	'-k[kill all processes with files open on filesystems before unmounting]'
	'-t[unmount all filesystems of specified type]:file system type:_file_systems'
	'-v[verbose]'
      )
    ;;  
    linux*)
      args=(
	'(- *)-h[show help]'
	'(- *)-V[show version]'
	'(-V -h)-v[verbose mode]'
	"(-V -h)-n[don't write /etc/mtab]"
	'(-V -h)-r[remount read-only on failure]'
	'(-V -h)-d[for loopback mount, free loop device]'
	'(-V -h *)-a[unmount all file systems from /etc/mtab]'
	'(-V -h)-t[specify file system type]:file system type:_file_systems'
	'(-V -h *)-O[with -a, restrict filesystems by options]:file system option:->fsopt'
	'(-V -h)-f[force unmount]'
	'(-V -h)-l[lazy unmount]'
	'*:dev or dir:->udevordir'
      )
    ;;
    freebsd*)
      args=(
	'(*)-a[unmount all mounted file systems]'
	'-A[unmount all mounted file systems except the root]'
	'-f[force unmount]'
	'-h[unmount all filesystems associated with host]:hostnames:_hosts'
	'-t[unmount all filesystems of specified type]:file system type:->fslist'
	'-v[verbose mode]'
	'*:dev or dir:->udevordir'
      )
    ;;
    solaris*)
      args=(
        '-a[unmount all mounted file systems]'
	'-f[force unmount]'
        '-V[echo command-line but do not execute]'
        '-o[specify file system options]:file system option:->fsopt'
	'*:dev or dir:->udevordir'
      )
    ;;
    *)
      args=(
	'-v[verbose mode]'
	'(*)-a[unmount all file systems from /etc/mtab]'
	'-t[specify file system type]:file system type:_file_systems'
	'*:dev or dir:->udevordir'
      )
    ;;
  esac

  _arguments -C -s "$args[@]" && ret=0

fi

case "$state" in
fslist)
  compset -P '*,'
  compset -S ',*' || suf=','
  _file_systems -qS "$suf"
;;
fsopt)
  _tags options || return 1

  eval 'tmp=(' '"$_fs_'${(s:,:)^${opt_args[$typeops]:-${deffs}}}'[@]"' ')'
  tmp=( "$_fs_any[@]" "${(@)tmp:#}" )
  _values -s , 'file system option' "$tmp[@]" && ret=0
  ;;
devordir)
  local dev_tmp mp_tmp mline

  if compset -P '*:'; then
    _wanted exports expl 'exported path' compadd \
	${${(f)"$(path+=( {/usr,}/sbin(N) ) _call_program exports \
	showmount -e ${IPREFIX%:} 2>/dev/null)"}[2,-1]%% *} && ret=0
    return ret
  fi
  if compset -S ':*'; then
    _hosts -S '' && ret=0
    return ret
  fi

  case "$OSTYPE" in
  freebsd*)
    while read mline; do 
      case $mline[(w)1] in
	\#* )
	  ;;
	proc)
	  ;;
	*)
	  [[ $mline[(w)3] == swap ]] || \
	    dev_tmp=( $dev_tmp $mline[(w)1] ) \
	    mp_tmp=( $mp_tmp $mline[(w)2] )
	  ;;
      esac
    done < /etc/fstab

    _alternative \
      'hosts:host:_hosts -S :' \
      'devices:device:compadd -a dev_tmp' \
      'directories:mount point:compadd -a mp_tmp' && ret=0
    ;;
  *)
    if (( ${${(s.,.)opt_args[-o]}[(I)loop(|=*)]} )) ; then
      _wanted device-files expl 'loop device file' _files && ret=0
    else
      _alternative \
        'hosts:host:_hosts -S :' \
        'files:device or mount point:_files -g "*(-%b,-/)"' && ret=0
    fi
    ;;
  esac
  ;;
udevordir)
  local dev_tmp mp_tmp mline

  case "$OSTYPE" in
  linux*|irix*)
    tmp=( "${(@f)$(< /etc/mtab)}" )
    dev_tmp=( "${(@)${(@)tmp%% *}:#none}" )
    mp_tmp=( "${(@)${(@)tmp#* }%% *}" )
    ;;
  *)
    /sbin/mount | while read mline; do
      mp_tmp=( $mp_tmp $mline[(w)1] )
      dev_tmp=( $dev_tmp $mline[(w)3] )
    done
    ;;
  esac

  _alternative \
    'devices:device:compadd -a dev_tmp' \
    'directories:mount point:compadd -a mp_tmp' && ret=0
  ;;
esac

return ret