VOP_READ(9) 맨 페이지 - 윈디하나의 솔라나라

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VOP_READ(9)

These entry points read or write the contents of a file The argu‐
ments are: The vnode of the file.  The location of the data to be
read  or written.  Various flags.  The credentials of the caller.
The argument is used to give directives and  hints  to  the  file
system.   When  attempting  a  read, the high 16 bits are used to
provide a read-ahead hint (in units of file system  blocks)  that
the  file  system should attempt.  The low 16 bits are a bit mask
which can contain the following flags: Do  I/O  as  atomic  unit.
Append  write to end.  Do I/O synchronously.  Underlying node al‐
ready locked.  flag set in file  table.   Data  already  in  VMIO
space.   The  file  should  be  locked on entry and will still be
locked on exit.  Zero is returned on success, otherwise an  error
code  is  returned.  An attempt was made to write a file that ex‐
ceeds the process's file size limit or  the  maximum  file  size.
The file system is full.  An append-only flag is set on the file,
but  the  caller is attempting to write before the current end of
file.  This manual page was written by

















































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