Try this: 1. Set up a sample directory, and some sample files [EMAIL PROTECTED]:/linux# mkdir test1 [EMAIL PROTECTED]:/linux# cd test1 [EMAIL PROTECTED]:/linux/test1# touch a [EMAIL PROTECTED]:/linux/test1# touch b [EMAIL PROTECTED]:/linux/test1# touch c [EMAIL PROTECTED]:/linux# cd .. [EMAIL PROTECTED]:/linux# touch d [EMAIL PROTECTED]:/linux# touch e [EMAIL PROTECTED]:/linux# ls d e test1
2. Use 'cpio' to in "pass-through" mode to generate a new directory with copies of these samples: [EMAIL PROTECTED]:/linux# find test1 d e -print | cpio -pdum test2 cpio: write error: (system kern) error with unknown subsystem Does this mean the Kernel is raising the exception? This doesn't seem as whimsical as the usual Hurd error message... [EMAIL PROTECTED]:/linux# ls d e test1 test2 [EMAIL PROTECTED]:/linux# cd test2 [EMAIL PROTECTED]:/linux/test2# ls test1 [EMAIL PROTECTED]:/linux/test2# cd test1 [EMAIL PROTECTED]:/linux/test2/test1# ls a So it gets the first guy, but stops shortly thereafter. If I make 'a' an actual file: This is a test Line 1 Line 2 Line 3 3 spaces Line 4 End And do the same to 'b' and 'c' (but not 'd' or 'e') After the preceding actions I get: [EMAIL PROTECTED]:/linux/test2# ls d test1 [EMAIL PROTECTED]:/linux/test2# cd test1 [EMAIL PROTECTED]:/linux/test2/test1# ls a b c [EMAIL PROTECTED]:/linux/test2/test1# cat a This is a test Line 1 Line 2 Line 3 3 spaces Line 4 End (and so on.) So it seems that 'cpio' on the Hurd (at least when called with these parameters) seems to have trouble with non-standard files. So I make a good link: [EMAIL PROTECTED]:/linux/test1# ln -sf a d And a bad: [EMAIL PROTECTED]:/linux/test1# ln -sf f e [EMAIL PROTECTED]:/linux/test1# ls -l -rw-r--r-- 1 root root 61 Jan 20 13:00 a -rw-r--r-- 1 root root 44 Jan 20 12:56 b -rw-r--r-- 1 root root 61 Jan 20 12:56 c lrwxr-xr-x 1 root root 1 Jan 20 13:00 d -> a lrwxr-xr-x 1 root root 1 Jan 20 13:00 f -> e [EMAIL PROTECTED]:/linux/test1# cd .. [EMAIL PROTECTED]:/linux# find test1 d e -print | cpio -pdum test2 cpio: write error: (system kern) error with unknown subsystem [EMAIL PROTECTED]:/linux# cd test2 [EMAIL PROTECTED]:/linux/test2# ls d test1 [EMAIL PROTECTED]:/linux/test2# cd test1 [EMAIL PROTECTED]:/linux/test2/test1# ls -rw-r--r-- 1 root root 61 Jan 20 13:00 a -rw-r--r-- 1 root root 44 Jan 20 12:56 b -rw-r--r-- 1 root root 61 Jan 20 12:56 c lrwxr-xr-x 1 root root 1 Jan 20 13:00 d -> a lrwxr-xr-x 1 root root 1 Jan 20 13:00 f -> e So again it croaks on the 0-length file Do you think this is a 'cpio' bug in the hurd build, or a Hurd bug? It works fine under Linux (even with the 0-length files). Thanks, -Brent
