Table 1 summarizes the VSAM binary I/O operations.
| KSDS | ESDS | RRDS | PATH | |
|---|---|---|---|---|
| fopen(), freopen() | rb | rb, rb+, ab, ab+, wb, wb+ (empty cluster or reuse specified for wb & wb+) | rb, rb+, ab, ab+, wb, wb+ (empty cluster or reuse specified for wb & wb+) | rb |
| fwrite(), fwrite_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| fprintf(), fprintf_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| fputs(), fputs_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| fputc(), fputc_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| putc(), putc_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| vfprintf(), vfprintf_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| vprintf(), vprintf_unlocked() | rb+, ab, ab+, wb, wb+ | rb+, ab, ab+, wb, wb+ | ||
| fread(), fread_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| fscanf(), fscanf_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| vfscanf(), vfscanf_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| fgets(), fgets_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| fgetc(), fgetc_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| getc() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| getc_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| ungetc(), ungetc_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| ftell(), ftell_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | |
| ftello(), ftello_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | |
| fseek(), fseek_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | |
| fseeko(), fseeko_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | |
| fgetpos(), fgetpos_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | |
| fsetpos(), fsetpos_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | |
| flocate(), flocate_unlocked() | rb | rb, rb+, ab+, wb+ | rb, rb+, ab+, wb+ | rb |
| rewind(), rewind_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |
| fflush(), fflush_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |
| ferror(), ferror_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |
| fdelrec(), fdelrec_unlocked() | ||||
| fupdate(), fupdate_unlocked() | ||||
| feof(), feof_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |
| clearerr(), clearerr_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |
| fclose() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |
| fldata(), fldata_unlocked() | rb | rb, rb+, ab, ab+, wb, wb+ | rb, rb+, ab, ab+, wb, wb+ | rb |