diff options
| -rw-r--r-- | sys/man/2/bio | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/man/2/bio b/sys/man/2/bio index 4d8189ebf..075212a6a 100644 --- a/sys/man/2/bio +++ b/sys/man/2/bio @@ -78,6 +78,9 @@ int Bflush(Biobufhdr *bp) .B int Bbuffered(Biobufhdr *bp) .PP +.B +void Blethal(Biobufhdr *bp, void (*errorf)(char *)); +.PP .SH DESCRIPTION These routines implement fast buffered I/O. 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 read on the file; when writing, it is the number of bytes ready to be 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 .B /sys/src/libbio .SH SEE ALSO @@ -330,6 +341,10 @@ returns zero if the file cannot be opened in the given mode. All routines set .I errstr on error. +.PP +An error during read or write will call an error handler specified by +.IR Blethal , +if any. .SH BUGS .I Brdline returns an error on strings longer than the buffer associated |