fts: close parent dir FD before returning from post-traversal fts_read The problem: the fts-using "mkdir -p A/B; rm -rf A" would attempt to unlink A, even though an FD open on A remained. This is suboptimal (holding a file descriptor open longer than needed), but otherwise not a problem on Unix-like kernels. However, on Cygwin with certain Novell file systems, (see http://cygwin.com/ml/cygwin/2011-10/msg00365.html), that represents a real problem: it causes the removal of A to fail with e.g., "rm: cannot remove `A': Device or resource busy" fts visits each directory twice and keeps a cache (fts_fd_ring) of directory file descriptors. After completing the final, FTS_DP, visit of a directory, RESTORE_INITIAL_CWD intended to clear the FD cache, but then proceeded to add a new FD to it via the subsequent FCHDIR (which calls cwd_advance_fd and i_ring_push). Before, the final file descriptor would be closed only via fts_close's call to fd_ring_clear. Now, it is usually closed earlier, via the final FTS_DP-returning fts_read call. * lib/fts.c (restore_initial_cwd): New function, converted from the macro. Call fd_ring_clear *after* FCHDIR, not before it. Update callers. Reported by Franz Sirl via the above URL, with analysis by Eric Blake in http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/28739

struct mapping { int standard_name; const char vendor_name[10 + 1]; };
%struct-type
%language=ANSI-C
%define slot-name standard_name
%define hash-function-name mapping_hash
%define lookup-function-name mapping_lookup
%readonly-tables
%global-table
%define word-array-name mappings
%pic
%%
# On OSF/1 5.1, look in /usr/lib/nls/loc/iconv.
ISO-8859-1, "ISO8859-1"
ISO-8859-2, "ISO8859-2"
ISO-8859-3, "ISO8859-3"
ISO-8859-4, "ISO8859-4"
ISO-8859-5, "ISO8859-5"
ISO-8859-6, "ISO8859-6"
ISO-8859-7, "ISO8859-7"
ISO-8859-8, "ISO8859-8"
ISO-8859-9, "ISO8859-9"
ISO-8859-15, "ISO8859-15"
CP437, "cp437"
CP775, "cp775"
CP850, "cp850"
CP852, "cp852"
CP855, "cp855"
CP857, "cp857"
CP861, "cp861"
CP862, "cp862"
CP865, "cp865"
CP866, "cp866"
CP869, "cp869"
CP874, "cp874"
CP949, "KSC5601"
CP1250, "cp1250"
CP1251, "cp1251"
CP1252, "cp1252"
CP1253, "cp1253"
CP1254, "cp1254"
CP1255, "cp1255"
CP1256, "cp1256"
CP1257, "cp1257"
CP1258, "cp1258"
EUC-JP, "eucJP"
EUC-KR, "eucKR"
EUC-TW, "eucTW"
BIG5, "big5"
SHIFT_JIS, "SJIS"
TIS-620, "TACTIS"