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updated bio(2) man page

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This commit is contained in:
aiju 2011-07-13 09:17:47 +02:00
parent 0708d34022
commit 34f333404f
1 changed files with 15 additions and 0 deletions
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15
sys/man/2/bio
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@ -78,6 +78,9 @@ int Bflush(Biobufhdr *bp)
.B .B
int Bbuffered(Biobufhdr *bp) int Bbuffered(Biobufhdr *bp)
.PP .PP
.B
void Blethal(Biobufhdr *bp, void (*errorf)(char *));
.PP
.SH DESCRIPTION .SH DESCRIPTION
These routines implement fast buffered I/O. These routines implement fast buffered I/O.
I/O on different file descriptors is independent. I/O on different file descriptors is independent.
@ -311,6 +314,14 @@ returns the number of bytes in the buffer.
When reading, this is the number of bytes still available from the last When reading, this is the number of bytes still available from the last
read on the file; when writing, it is the number of bytes ready to be read on the file; when writing, it is the number of bytes ready to be
written. written.
.PP
.I Blethal
arranges
.I errorf
to be called in case of an error happening on read/write.
An argument of
.B nil
will have the program terminated in case of error.
.SH SOURCE .SH SOURCE
.B /sys/src/libbio .B /sys/src/libbio
.SH SEE ALSO .SH SEE ALSO
@ -330,6 +341,10 @@ returns zero if the file cannot be opened in the given mode.
All routines set All routines set
.I errstr .I errstr
on error. on error.
.PP
An error during read or write will call an error handler specified by
.IR Blethal ,
if any.
.SH BUGS .SH BUGS
.I Brdline .I Brdline
returns an error on strings longer than the buffer associated returns an error on strings longer than the buffer associated