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re: https://github.com/Unidata/netcdf-c/issues/1154 Inadvertently, the behavior of NC_DISKLESS with nc_create() was changed in release 4.6.1. Previously, the NC_WRITE flag needed to be explicitly used with NC_DISKLESS in order to cause the created file to be persisted to disk. Additional analyis indicated that the current NC_DISKLESS implementation was seriously flawed. This PR attempts to clean up and regularize the situation with respect to NC_DISKLESS control. One important aspect of diskless operation is that there are two different notions of write. 1. The file is read-write vs read-only when using the netcdf API. 2. The file is persisted or not to disk at nc_close(). Previously, these two were conflated. The rules now are as follows. 1. NC_DISKLESS + NC_WRITE means that the file is read/write using the netcdf API 2. NC_DISKLESS + NC_PERSIST means that the file is persisted to a disk file at nc_close. 3. NC_DISKLESS + NC_PERSIST + NC_WRITE means both 1 and 2. The NC_PERSIST flag is new and takes over the obsolete NC_MPIPOSIX flag. NC_MPIPOSIX is still defined, but is now an alias for the NC_MPIIO flag. It is also now the case that for netcdf-4, NC_DISKLESS is independent of NC_INMEMORY and in fact it is an error to specify both flags simultaneously. Finally, the MMAP code was fixed to use NC_PERSIST as well. Also marked MMAP as deprecated. Also added a test case to test various combinations of NC_DISKLESS, NC_PERSIST, and NC_WRITE. This PR affects a number of files and especially test cases that used NC_DISKLESS. Misc. Unrelated fixes 1. fixed some warnings in ncdump/dumplib.c |
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| attr.m4 | ||
| CMakeLists.txt | ||
| depend | ||
| dim.c | ||
| ffio.c | ||
| lookup3.c | ||
| Makefile.am | ||
| memio.c | ||
| mmapio.c | ||
| nc3dispatch.c | ||
| nc3internal.c | ||
| ncFile.c | ||
| ncio.c | ||
| ncio.h | ||
| ncstdio.c | ||
| ncstdio.h | ||
| ncx_cray.c | ||
| ncx.h | ||
| ncx.m4 | ||
| posixio.c | ||
| pstdint.h | ||
| putget.m4 | ||
| t_ncio.c | ||
| t_ncio.in | ||
| t_ncxx.m4 | ||
| test_nc.sav | ||
| v1hpg.c | ||
| var.c | ||
| winceio.c | ||
| XGetopt.c | ||