diff options
Diffstat (limited to 'src/H5Fsuper.c')
| -rw-r--r-- | src/H5Fsuper.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/src/H5Fsuper.c b/src/H5Fsuper.c index 69c7a8d..04abfb2 100644 --- a/src/H5Fsuper.c +++ b/src/H5Fsuper.c @@ -466,16 +466,6 @@ H5F_super_read(H5F_t *f, hid_t dxpl_id, H5G_loc_t *root_loc) if(H5FD_sb_decode(lf, drv_name, p) < 0) HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, FAIL, "unable to decode driver information") } /* end if */ - else - /* This flag is false only if a file was created with v1.6 library or - * before and no driver info was saved in the superblock. When the file is - * closed and superblock is written to the file, v1.8 library or after - * doesn't write the driver info in the superblock. Otherwise, the newly - * added driver block will overwrite the (meta)data right after the - * superblock. SLU - 2009/3/24 - */ - shared->write_driver = FALSE; - } /* end if */ else { haddr_t root_addr; /* Address of root group */ @@ -944,7 +934,15 @@ H5F_super_write(H5F_t *f, hid_t dxpl_id) /* Encode the driver information block. */ H5_ASSIGN_OVERFLOW(driver_size, H5FD_sb_size(f->shared->lf), hsize_t, size_t); - if(driver_size > 0 && f->shared->write_driver) { + + /* Checking whether driver block address is defined here is to handle backward + * compatibility. If the file was created with v1.6 library or earlier and no + * driver info block was written in the superblock, we don't write it either even + * though there's some driver info. Otherwise, the driver block extended will + * overwrite the (meta)data right after the superblock. This situation happens to + * the family driver particularly. SLU - 2009/3/24 + */ + if(driver_size > 0 && H5F_addr_defined(f->shared->driver_addr)) { char driver_name[9]; /* Name of driver, for driver info block */ uint8_t *dbuf = p; /* Pointer to beginning of driver info */ |