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vfs_mount (9)
  • >> vfs_mount (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    NAME

    
    
    vfs_mount
    
     - generic file system mount function
    
     
    

    SYNOPSIS

       #include <sys/param.h>
       #include <sys/mount.h>
    int Fo vfs_mount Fa struct thread *td Fa const char *fstype Fa char *fspath Fa int fsflags Fa void *fsdata Fc  

    DESCRIPTION

    The vfs_mount ();
    function handles the generic portion of mounting a file system, and calls the file system specific mount function after verifying its parameters and setting up the structures expected by the underlying mount code.

    vfs_mount ();
    is called directly by the mount(2) system call.

    Its arguments are:

    Fa td
    The thread responsible for this call.
    Fa fstype
    The type of file system being mounted.
    Fa fspath
    The path to the mount point of the file system.
    Fa fsflags
    Flags controlling the mount. See mount(2) for details.

    MNT_EXPORTED , MNT_NOSUID , MNT_UPDATE , MNT_RELOAD MNT_FORCE , MNT_ASYNC , MNT_SYNCHRONOUS , MNT_UNION , MNT_NOATIME MNT_SNAPSHOT , MNT_NOCLUSTERR , MNT_NOCLUSTERW , MNT_IGNORE MNT_UNION , MNT_NOSYMFOLLOW

    Fa fsdata
    File system specific data structure. It is in userspace when passed to vfs_mount ();
    and is left untouched when passed to file system's mount (.);

     

    RETURN VALUES

    A 0 value is returned on success.  

    ERRORS

    Bq Er ENAMETOOLONG
    The fs type or the mount point path is too long or any individual path component is too long.
    Bq Er EPERM
    Permission denied. There are a number of reason this can occur ranging from the user not having permission to mount a file system to the securelevel being to high to load the Fa fstype module.
    Bq Er EINVAL
    Invalid operation (ex: trying to update a non mount-point).
    Bq Er ENOENT
    The mount point does not exist (from namei () .);
    Bq Er ELOOP
    The mount point is a muddle of links (from namei () .);
    Bq Er EOPNOTSUPP
    The operation is not supported (ex: reloading a r/w file system).
    Bq Er EBUSY
    The mount point is busy or is not really a mount point (on update).
    Bq Er ENOTDIR
    The mount point is not a directory.
    Bq Er ENODEV
    The kernel linker was unable to load the specified Fa fstype or was unable to find the specified Fa fstype module.

    Other errors can be returned by the file system's mount ();
    and you should check the specific file system for details. Also this call relies on a large number of other kernel services whose errors it returns so this list may not be exhaustive.  

    SEE ALSO

    mount(2), mount(8), vfs_mountedon9

    vfs.usermount  

    AUTHORS

    This manual page was written by An Chad David Aq [email protected] .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    AUTHORS


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