I appreciate all the responses. This is the result.
1. The option O_BINARY is not available in fcntl.h for gcc, So
open("test.dbh", O_RDWR|O_BINARY) does not work.
2. Neither will the unix2dos program work since the file to open is a
binary file which must be read byte by byte.
3. fopen("test.dbh", "rb") seems to have nailed it. Since I require use of
lseek() later on, I need a file descriptor. So the solution (hack?) that
works is the following:
FILE *f = fopen("test.dbh", "rb");
int fd = fileno(f);
With that, the read(fd, data, 256) will read the correct amount of bytes.
Thanks!
--
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Dr. Edscott Wilson Garcia
Applied Mathematics and Computing
Mexican Petroleum Institute
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