Bram Moolenaar wrote:
> Patch 7.2.076
> Problem: rename(from, to) deletes the file if "from" and "to" are not equal
> but still refer to the same file. E.g., on a FAT32 filesystem
> under Unix.
> Solution: Go through another file name.
> Files: src/fileio.c
>
>
> *** ../vim-7.2.075/src/fileio.c Fri Nov 28 21:26:50 2008
> --- src/fileio.c Tue Dec 30 16:04:44 2008
> ***************
> *** 6119,6124 ****
> --- 6119,6165 ----
> if (mch_stat((char *)from, &st) < 0)
> return -1;
>
> + #ifdef UNIX
> + {
> + struct stat st_to;
> + char tempname[MAXPATHL + 1];
> +
> + /* It's possible for the source and destination to be the same file.
> + * This happens when "from" and "to" differ in case and are on a FAT32
> + * filesystem. In that case go through a temp file name. */
> + if (mch_stat((char *)to, &st_to) >= 0
> + && st.st_dev == st_to.st_dev
> + && st.st_ino == st_to.st_ino)
> + {
[...]
Will the stat() technique to find whether 2 files are identical work on
all FAT file systems?
I think remembering that FAT file systems don't have the concept of
inodes, unlike Unix file systems, so stat() either leaves st_ino as 0,
or synthesizes a fake inode number. I will try it later when I have time.
-- Dominique
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