dwrite - write record using record number
#include
rno_t dwrite (buf, record, fcb)
char *buf;
rno_t record;
DFILE *fcb;
Dwrite writes the record in buf at the record number specified by
record where record is between 1 and number of records in the
RMSfile. Record is returned by all calls that access the RMSfile.
Fcb is the file block pointer returned by dlopen(C-3)
or
dopen(C-3).
Dwrite does not use the primary key values in the record to
determine where the record shall be stored. That is specified
solely by the record parameter. Dwrite is intended to be used
only as a low level RMS access routine when alternate file access
methods are desired.
If the RMSfile contains secondary keys, the key indexes are not
updated by the call to dwrite.
dlopen(C-3), dopen(C-3),
dread(C-3)
Chapter 4, RMS Programming Guide
DIAGNOSTICS
Dwrite returns a value of BAD (-1) if record is not within the
range of valid records for the RMSfile or if fcb is not an opened
RMSfile.