Date: Sun, 26 Oct 1997 20:45:01 -0500 (EST) From: Alfred Perlstein <perlsta@cs.sunyit.edu> To: hackers@FreeBSD.org Subject: help with fstat? Message-ID: <Pine.BSF.3.96.971026203728.19711A-100000@server.local.sunyit.edu>
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i'm trying to write a program that will dump a file through a TCP
connection, i've decided to use fstat() to get the optimum tranfer info...
however i'm very confused as to what it reports, the man page says:
st_blksize The optimal I/O block size for the file.
st_blocks The actual number of blocks allocated for the file in
512-byte units. As short symbolic links are stored in the
inode, this number may be zero.
i want to run a loop doing reads from the file into a buffer of optimal
size...
how should i derive the size optimal amount of bytes from this?
is seems fstat always returns the same amount of blocks for the two
values no matter how big the file is it always reports that i should grab
the whole file...
is there a better way to get this info? or am i interpreting the data
incorrectly?
another problem i'm having is figuring out how to manipulate the data type
"quad_t"
can someone point me to where it is defined? i know it represents an 8
byte integer right? but how can i move it around correctly and use it?
-Alfred
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