From e6ae6cd338d590327115b3a1d07e551588bec399 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Mon, 8 Aug 2005 09:45:42 +0000 Subject: [PATCH] * Makefile.in (DLL_OFILES): Add fts.o, ftw.o, nftw.o. * cygwin.din: Export fts_children, fts_close, fts_get_clientptr, fts_get_stream, fts_open, fts_read, fts_set, fts_set_clientptr, ftw, nftw. * fts.c: New file, imported from FreeBSD. * ftw.c: Ditto. * nftw.c: Ditto. * include/fts.h: Ditto. * include/ftw.h: Ditto. * include/cygwin/version.h: Bump API minor number. --- winsup/cygwin/ChangeLog | 13 + winsup/cygwin/Makefile.in | 19 +- winsup/cygwin/cygwin.din | 10 + winsup/cygwin/include/cygwin/version.h | 4 +- winsup/cygwin/include/fts.h | 153 +++ winsup/cygwin/include/ftw.h | 62 ++ winsup/cygwin/libc/fts.c | 1253 ++++++++++++++++++++++++ winsup/cygwin/libc/ftw.c | 99 ++ winsup/cygwin/libc/nftw.c | 118 +++ 9 files changed, 1721 insertions(+), 10 deletions(-) create mode 100644 winsup/cygwin/include/fts.h create mode 100644 winsup/cygwin/include/ftw.h create mode 100644 winsup/cygwin/libc/fts.c create mode 100644 winsup/cygwin/libc/ftw.c create mode 100644 winsup/cygwin/libc/nftw.c diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index ba6e11da1..24ed9ecdd 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -1,3 +1,16 @@ +2005-08-08 Corinna Vinschen + + * Makefile.in (DLL_OFILES): Add fts.o, ftw.o, nftw.o. + * cygwin.din: Export fts_children, fts_close, fts_get_clientptr, + fts_get_stream, fts_open, fts_read, fts_set, fts_set_clientptr, + ftw, nftw. + * fts.c: New file, imported from FreeBSD. + * ftw.c: Ditto. + * nftw.c: Ditto. + * include/fts.h: Ditto. + * include/ftw.h: Ditto. + * include/cygwin/version.h: Bump API minor number. + 2005-08-07 Christopher Faylor * Makefile.in (dtable_CFLAGS): Use -fomit-frame-pointer and diff --git a/winsup/cygwin/Makefile.in b/winsup/cygwin/Makefile.in index 930c00ad3..c14eb8046 100644 --- a/winsup/cygwin/Makefile.in +++ b/winsup/cygwin/Makefile.in @@ -131,15 +131,16 @@ DLL_OFILES:=assert.o autoload.o bsdlib.o ctype.o cxx.o cygheap.o cygthread.o \ fhandler_process.o fhandler_random.o fhandler_raw.o fhandler_registry.o \ fhandler_serial.o fhandler_socket.o fhandler_tape.o fhandler_termios.o \ fhandler_tty.o fhandler_virtual.o fhandler_windows.o fhandler_zero.o \ - flock.o fnmatch.o fork.o getopt.o glob.o grp.o heap.o hookapi.o \ - init.o ioctl.o ipc.o iruserok.o localtime.o lsearch.o malloc_wrapper.o \ - miscfuncs.o mktemp.o mmap.o msg.o net.o netdb.o ntea.o passwd.o path.o \ - pinfo.o pipe.o poll.o pthread.o regcomp.o regerror.o regexec.o regfree.o \ - registry.o resource.o scandir.o sched.o sec_acl.o sec_helper.o security.o \ - select.o sem.o shared.o shm.o sigfe.o signal.o sigproc.o smallprint.o \ - spawn.o strace.o strsep.o strsig.o sync.o syscalls.o sysconf.o \ - syslog.o termios.o thread.o timer.o times.o tty.o uinfo.o uname.o \ - v8_regexp.o v8_regerror.o v8_regsub.o wait.o wincap.o window.o \ + flock.o fnmatch.o fork.o fts.o ftw.o getopt.o glob.o grp.o heap.o \ + hookapi.o init.o ioctl.o ipc.o iruserok.o localtime.o lsearch.o \ + malloc_wrapper.o miscfuncs.o mktemp.o mmap.o msg.o net.o netdb.o nftw.o \ + ntea.o passwd.o path.o pinfo.o pipe.o poll.o pthread.o regcomp.o \ + regerror.o regexec.o regfree.o registry.o resource.o scandir.o sched.o \ + sec_acl.o sec_helper.o security.o select.o sem.o shared.o shm.o \ + sigfe.o signal.o sigproc.o smallprint.o spawn.o strace.o strsep.o \ + strsig.o sync.o syscalls.o sysconf.o syslog.o termios.o thread.o \ + timer.o times.o tty.o uinfo.o uname.o v8_regexp.o v8_regerror.o \ + v8_regsub.o wait.o wincap.o window.o \ $(EXTRA_DLL_OFILES) $(EXTRA_OFILES) $(MALLOC_OFILES) $(MT_SAFE_OBJECTS) GMON_OFILES:=gmon.o mcount.o profil.o diff --git a/winsup/cygwin/cygwin.din b/winsup/cygwin/cygwin.din index c27162e0d..da8e055c3 100644 --- a/winsup/cygwin/cygwin.din +++ b/winsup/cygwin/cygwin.din @@ -517,6 +517,16 @@ _fiprintf = fiprintf SIGFE flock SIGFE flockfile SIGFE ftrylockfile SIGFE +fts_children SIGFE +fts_close SIGFE +fts_get_clientptr NOSIGFE +fts_get_stream NOSIGFE +fts_open SIGFE +fts_read SIGFE +fts_set NOSIGFE +fts_set_clientptr NOSIGFE +ftw SIGFE +nftw SIGFE funlockfile SIGFE floor NOSIGFE _floor = floor NOSIGFE diff --git a/winsup/cygwin/include/cygwin/version.h b/winsup/cygwin/include/cygwin/version.h index 7e823cd6d..d5e97953b 100644 --- a/winsup/cygwin/include/cygwin/version.h +++ b/winsup/cygwin/include/cygwin/version.h @@ -263,12 +263,14 @@ details. */ 134: Export getline, getdelim. 135: Export pread, pwrite 136: Add TIOCMBIS/TIOCMBIC ioctl codes. + 137: fts_children, fts_close, fts_get_clientptr, fts_get_stream, + fts_open, fts_read, fts_set, fts_set_clientptr, ftw, nftw. */ /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */ #define CYGWIN_VERSION_API_MAJOR 0 -#define CYGWIN_VERSION_API_MINOR 136 +#define CYGWIN_VERSION_API_MINOR 137 /* There is also a compatibity version number associated with the shared memory regions. It is incremented when incompatible diff --git a/winsup/cygwin/include/fts.h b/winsup/cygwin/include/fts.h new file mode 100644 index 000000000..ac3209920 --- /dev/null +++ b/winsup/cygwin/include/fts.h @@ -0,0 +1,153 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)fts.h 8.3 (Berkeley) 8/14/94 + * $FreeBSD: /repoman/r/ncvs/src/include/fts.h,v 1.11 2005/01/07 00:06:20 pjd Exp $ + */ + +#ifndef _FTS_H_ +#define _FTS_H_ + +typedef struct { + struct _ftsent *fts_cur; /* current node */ + struct _ftsent *fts_child; /* linked list of children */ + struct _ftsent **fts_array; /* sort array */ + __dev32_t fts_dev; /* starting device # */ + char *fts_path; /* path for this descent */ + int fts_rfd; /* fd for root */ + int fts_pathlen; /* sizeof(path) */ + int fts_nitems; /* elements in the sort array */ + int (*fts_compar) /* compare function */ + (const struct _ftsent * const *, const struct _ftsent * const *); + +#define FTS_COMFOLLOW 0x001 /* follow command line symlinks */ +#define FTS_LOGICAL 0x002 /* logical walk */ +#define FTS_NOCHDIR 0x004 /* don't change directories */ +#define FTS_NOSTAT 0x008 /* don't get stat info */ +#define FTS_PHYSICAL 0x010 /* physical walk */ +#define FTS_SEEDOT 0x020 /* return dot and dot-dot */ +#define FTS_XDEV 0x040 /* don't cross devices */ +#ifndef __CYGWIN__ +#define FTS_WHITEOUT 0x080 /* return whiteout information */ +#endif +#define FTS_OPTIONMASK 0x0ff /* valid user option mask */ + +#define FTS_NAMEONLY 0x100 /* (private) child names only */ +#define FTS_STOP 0x200 /* (private) unrecoverable error */ + int fts_options; /* fts_open options, global flags */ + void *fts_clientptr; /* thunk for sort function */ +} FTS; + +typedef struct _ftsent { + struct _ftsent *fts_cycle; /* cycle node */ + struct _ftsent *fts_parent; /* parent directory */ + struct _ftsent *fts_link; /* next file in directory */ + union { + struct { + long __fts_number; /* local numeric value */ + void *__fts_pointer; /* local address value */ + } __struct_ftsent; + int64_t __fts_bignum; + } __union_ftsent; +#define fts_number __union_ftsent.__struct_ftsent.__fts_number +#define fts_pointer __union_ftsent.__struct_ftsent.__fts_pointer +#define fts_bignum __union_ftsent.__fts_bignum + char *fts_accpath; /* access path */ + char *fts_path; /* root path */ + int fts_errno; /* errno for this node */ + int fts_symfd; /* fd for symlink */ + u_short fts_pathlen; /* strlen(fts_path) */ + u_short fts_namelen; /* strlen(fts_name) */ + + __ino64_t fts_ino; /* inode */ + __dev32_t fts_dev; /* device */ + nlink_t fts_nlink; /* link count */ + +#define FTS_ROOTPARENTLEVEL -1 +#define FTS_ROOTLEVEL 0 + short fts_level; /* depth (-1 to N) */ + +#define FTS_D 1 /* preorder directory */ +#define FTS_DC 2 /* directory that causes cycles */ +#define FTS_DEFAULT 3 /* none of the above */ +#define FTS_DNR 4 /* unreadable directory */ +#define FTS_DOT 5 /* dot or dot-dot */ +#define FTS_DP 6 /* postorder directory */ +#define FTS_ERR 7 /* error; errno is set */ +#define FTS_F 8 /* regular file */ +#define FTS_INIT 9 /* initialized only */ +#define FTS_NS 10 /* stat(2) failed */ +#define FTS_NSOK 11 /* no stat(2) requested */ +#define FTS_SL 12 /* symbolic link */ +#define FTS_SLNONE 13 /* symbolic link without target */ +#define FTS_W 14 /* whiteout object */ + u_short fts_info; /* user flags for FTSENT structure */ + +#define FTS_DONTCHDIR 0x01 /* don't chdir .. to the parent */ +#define FTS_SYMFOLLOW 0x02 /* followed a symlink to get here */ +#define FTS_ISW 0x04 /* this is a whiteout object */ + u_short fts_flags; /* private flags for FTSENT structure */ + +#define FTS_AGAIN 1 /* read node again */ +#define FTS_FOLLOW 2 /* follow symbolic link */ +#define FTS_NOINSTR 3 /* no instructions */ +#define FTS_SKIP 4 /* discard node */ + u_short fts_instr; /* fts_set() instructions */ + +#ifdef __INSIDE_CYGWIN__ + struct __stat64 *fts_statp; /* stat(2) information */ +#elif defined (__CYGWIN__) && !defined (__CYGWIN_USE_BIG_TYPES__) + #error "fts requires __CYGWIN_USE_BIG_TYPES__" +#else + struct stat *fts_statp; /* stat(2) information */ +#endif + char *fts_name; /* file name */ + FTS *fts_fts; /* back pointer to main FTS */ +} FTSENT; + +#include + +__BEGIN_DECLS +FTSENT *fts_children(FTS *, int); +int fts_close(FTS *); +void *fts_get_clientptr(FTS *); +#define fts_get_clientptr(fts) ((fts)->fts_clientptr) +FTS *fts_get_stream(FTSENT *); +#define fts_get_stream(ftsent) ((ftsent)->fts_fts) +FTS *fts_open(char * const *, int, + int (*)(const FTSENT * const *, const FTSENT * const *)); +FTSENT *fts_read(FTS *); +int fts_set(FTS *, FTSENT *, int); +void fts_set_clientptr(FTS *, void *); +__END_DECLS + +#endif /* !_FTS_H_ */ diff --git a/winsup/cygwin/include/ftw.h b/winsup/cygwin/include/ftw.h new file mode 100644 index 000000000..20f24bdba --- /dev/null +++ b/winsup/cygwin/include/ftw.h @@ -0,0 +1,62 @@ +/* $OpenBSD: ftw.h,v 1.1 2003/07/21 21:13:18 millert Exp $ */ + +/* + * Copyright (c) 2003 Todd C. Miller + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Sponsored in part by the Defense Advanced Research Projects + * Agency (DARPA) and Air Force Research Laboratory, Air Force + * Materiel Command, USAF, under agreement number F39502-99-1-0512. + * + * $FreeBSD: /repoman/r/ncvs/src/include/ftw.h,v 1.2 2004/08/24 13:00:54 tjr Exp $ + */ + +#ifndef _FTW_H +#define _FTW_H + +#include +#include + +/* + * Valid flags for the 3rd argument to the function that is passed as the + * second argument to ftw(3) and nftw(3). Say it three times fast! + */ +#define FTW_F 0 /* File. */ +#define FTW_D 1 /* Directory. */ +#define FTW_DNR 2 /* Directory without read permission. */ +#define FTW_DP 3 /* Directory with subdirectories visited. */ +#define FTW_NS 4 /* Unknown type; stat() failed. */ +#define FTW_SL 5 /* Symbolic link. */ +#define FTW_SLN 6 /* Sym link that names a nonexistent file. */ + +/* + * Flags for use as the 4th argument to nftw(3). These may be ORed together. + */ +#define FTW_PHYS 0x01 /* Physical walk, don't follow sym links. */ +#define FTW_MOUNT 0x02 /* The walk does not cross a mount point. */ +#define FTW_DEPTH 0x04 /* Subdirs visited before the dir itself. */ +#define FTW_CHDIR 0x08 /* Change to a directory before reading it. */ + +struct FTW { + int base; + int level; +}; + +__BEGIN_DECLS +int ftw(const char *, int (*)(const char *, const struct __stat64 *, int), int); +int nftw(const char *, int (*)(const char *, const struct __stat64 *, int, + struct FTW *), int, int); +__END_DECLS + +#endif /* !_FTW_H */ diff --git a/winsup/cygwin/libc/fts.c b/winsup/cygwin/libc/fts.c new file mode 100644 index 000000000..d0e77892d --- /dev/null +++ b/winsup/cygwin/libc/fts.c @@ -0,0 +1,1253 @@ +/*- + * Copyright (c) 1990, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $OpenBSD: fts.c,v 1.22 1999/10/03 19:22:22 millert Exp $ + */ + +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fts.c 8.6 (Berkeley) 8/14/94"; +#endif /* LIBC_SCCS and not lint */ +#endif +#ifdef __CYGWIN__ +#include "winsup.h" +#include +#define __FBSDID(x) +#define _open open +#define _close close +#define reallocf realloc +#endif +#include +__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/fts.c,v 1.27 2004/06/08 06:23:23 das Exp $"); + +#ifndef __CYGWIN__ +#include "namespace.h" +#endif +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#ifndef __CYGWIN__ +#include "un-namespace.h" +#endif + +static FTSENT *fts_alloc(FTS *, const char *, int); +static FTSENT *fts_build(FTS *, int); +static void fts_lfree(FTSENT *); +static void fts_load(FTS *, FTSENT *); +static size_t fts_maxarglen(char * const *); +static void fts_padjust(FTS *, FTSENT *); +static int fts_palloc(FTS *, size_t); +static FTSENT *fts_sort(FTS *, FTSENT *, int); +static u_short fts_stat(FTS *, FTSENT *, int); +static int fts_safe_changedir(FTS *, FTSENT *, int, const char *); +static int fts_ufslinks(FTS *, const FTSENT *); + +#define ISDOT(a) (a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2]))) + +#define CLR(opt) (sp->fts_options &= ~(opt)) +#define ISSET(opt) (sp->fts_options & (opt)) +#define SET(opt) (sp->fts_options |= (opt)) + +#define FCHDIR(sp, fd) (!ISSET(FTS_NOCHDIR) && fchdir(fd)) + +/* fts_build flags */ +#define BCHILD 1 /* fts_children */ +#define BNAMES 2 /* fts_children, names only */ +#define BREAD 3 /* fts_read */ + +/* + * Internal representation of an FTS, including extra implementation + * details. The FTS returned from fts_open points to this structure's + * ftsp_fts member (and can be cast to an _fts_private as required) + */ +struct _fts_private { + FTS ftsp_fts; + struct statfs ftsp_statfs; + __dev32_t ftsp_dev; + int ftsp_linksreliable; +}; + +/* + * The "FTS_NOSTAT" option can avoid a lot of calls to stat(2) if it + * knows that a directory could not possibly have subdirectories. This + * is decided by looking at the link count: a subdirectory would + * increment its parent's link count by virtue of its own ".." entry. + * This assumption only holds for UFS-like filesystems that implement + * links and directories this way, so we must punt for others. + */ + +#ifndef __CYGWIN__ +static const char *ufslike_filesystems[] = { + "ufs", + "nfs", + "nfs4", + "ext2fs", + 0 +}; +#endif + +FTS * +fts_open(argv, options, compar) + char * const *argv; + int options; + int (*compar)(const FTSENT * const *, const FTSENT * const *); +{ + struct _fts_private *priv; + FTS *sp; + FTSENT *p, *root; + int nitems; + FTSENT *parent, *tmp; + int len; + + /* Options check. */ + if (options & ~FTS_OPTIONMASK) { + errno = EINVAL; + return (NULL); + } + + /* Allocate/initialize the stream. */ + if ((priv = malloc(sizeof(*priv))) == NULL) + return (NULL); + memset(priv, 0, sizeof(*priv)); + sp = &priv->ftsp_fts; + sp->fts_compar = compar; + sp->fts_options = options; + + /* Shush, GCC. */ + tmp = NULL; + + /* Logical walks turn on NOCHDIR; symbolic links are too hard. */ + if (ISSET(FTS_LOGICAL)) + SET(FTS_NOCHDIR); + + /* + * Start out with 1K of path space, and enough, in any case, + * to hold the user's paths. + */ + if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN))) + goto mem1; + + /* Allocate/initialize root's parent. */ + if ((parent = fts_alloc(sp, "", 0)) == NULL) + goto mem2; + parent->fts_level = FTS_ROOTPARENTLEVEL; + + /* Allocate/initialize root(s). */ + for (root = NULL, nitems = 0; *argv != NULL; ++argv, ++nitems) { + /* Don't allow zero-length paths. */ + if ((len = strlen(*argv)) == 0) { + errno = ENOENT; + goto mem3; + } + + p = fts_alloc(sp, *argv, len); + p->fts_level = FTS_ROOTLEVEL; + p->fts_parent = parent; + p->fts_accpath = p->fts_name; + p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW)); + + /* Command-line "." and ".." are real directories. */ + if (p->fts_info == FTS_DOT) + p->fts_info = FTS_D; + + /* + * If comparison routine supplied, traverse in sorted + * order; otherwise traverse in the order specified. + */ + if (compar) { + p->fts_link = root; + root = p; + } else { + p->fts_link = NULL; + if (root == NULL) + tmp = root = p; + else { + tmp->fts_link = p; + tmp = p; + } + } + } + if (compar && nitems > 1) + root = fts_sort(sp, root, nitems); + + /* + * Allocate a dummy pointer and make fts_read think that we've just + * finished the node before the root(s); set p->fts_info to FTS_INIT + * so that everything about the "current" node is ignored. + */ + if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL) + goto mem3; + sp->fts_cur->fts_link = root; + sp->fts_cur->fts_info = FTS_INIT; + + /* + * If using chdir(2), grab a file descriptor pointing to dot to ensure + * that we can get back here; this could be avoided for some paths, + * but almost certainly not worth the effort. Slashes, symbolic links, + * and ".." are all fairly nasty problems. Note, if we can't get the + * descriptor we run anyway, just more slowly. + */ + if (!ISSET(FTS_NOCHDIR) && (sp->fts_rfd = _open(".", O_RDONLY, 0)) < 0) + SET(FTS_NOCHDIR); + + return (sp); + +mem3: fts_lfree(root); + free(parent); +mem2: free(sp->fts_path); +mem1: free(sp); + return (NULL); +} + +static void +fts_load(sp, p) + FTS *sp; + FTSENT *p; +{ + int len; + char *cp; + + /* + * Load the stream structure for the next traversal. Since we don't + * actually enter the directory until after the preorder visit, set + * the fts_accpath field specially so the chdir gets done to the right + * place and the user can access the first node. From fts_open it's + * known that the path will fit. + */ + len = p->fts_pathlen = p->fts_namelen; + memmove(sp->fts_path, p->fts_name, len + 1); + if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) { + len = strlen(++cp); + memmove(p->fts_name, cp, len + 1); + p->fts_namelen = len; + } + p->fts_accpath = p->fts_path = sp->fts_path; + sp->fts_dev = p->fts_dev; +} + +int +fts_close(sp) + FTS *sp; +{ + FTSENT *freep, *p; + int saved_errno; + + /* + * This still works if we haven't read anything -- the dummy structure + * points to the root list, so we step through to the end of the root + * list which has a valid parent pointer. + */ + if (sp->fts_cur) { + for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) { + freep = p; + p = p->fts_link != NULL ? p->fts_link : p->fts_parent; + free(freep); + } + free(p); + } + + /* Free up child linked list, sort array, path buffer. */ + if (sp->fts_child) + fts_lfree(sp->fts_child); + if (sp->fts_array) + free(sp->fts_array); + free(sp->fts_path); + + /* Return to original directory, save errno if necessary. */ + if (!ISSET(FTS_NOCHDIR)) { + saved_errno = fchdir(sp->fts_rfd) ? errno : 0; + (void)_close(sp->fts_rfd); + + /* Set errno and return. */ + if (saved_errno != 0) { + /* Free up the stream pointer. */ + free(sp); + errno = saved_errno; + return (-1); + } + } + + /* Free up the stream pointer. */ + free(sp); + return (0); +} + +/* + * Special case of "/" at the end of the path so that slashes aren't + * appended which would cause paths to be written as "....//foo". + */ +#define NAPPEND(p) \ + (p->fts_path[p->fts_pathlen - 1] == '/' \ + ? p->fts_pathlen - 1 : p->fts_pathlen) + +FTSENT * +fts_read(sp) + FTS *sp; +{ + FTSENT *p, *tmp; + int instr; + char *t; + int saved_errno; + + /* If finished or unrecoverable error, return NULL. */ + if (sp->fts_cur == NULL || ISSET(FTS_STOP)) + return (NULL); + + /* Set current node pointer. */ + p = sp->fts_cur; + + /* Save and zero out user instructions. */ + instr = p->fts_instr; + p->fts_instr = FTS_NOINSTR; + + /* Any type of file may be re-visited; re-stat and re-turn. */ + if (instr == FTS_AGAIN) { + p->fts_info = fts_stat(sp, p, 0); + return (p); + } + + /* + * Following a symlink -- SLNONE test allows application to see + * SLNONE and recover. If indirecting through a symlink, have + * keep a pointer to current location. If unable to get that + * pointer, follow fails. + */ + if (instr == FTS_FOLLOW && + (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) { + p->fts_info = fts_stat(sp, p, 1); + if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) { + if ((p->fts_symfd = _open(".", O_RDONLY, 0)) < 0) { + p->fts_errno = errno; + p->fts_info = FTS_ERR; + } else + p->fts_flags |= FTS_SYMFOLLOW; + } + return (p); + } + + /* Directory in pre-order. */ + if (p->fts_info == FTS_D) { + /* If skipped or crossed mount point, do post-order visit. */ + if (instr == FTS_SKIP || + (ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev)) { + if (p->fts_flags & FTS_SYMFOLLOW) + (void)_close(p->fts_symfd); + if (sp->fts_child) { + fts_lfree(sp->fts_child); + sp->fts_child = NULL; + } + p->fts_info = FTS_DP; + return (p); + } + + /* Rebuild if only read the names and now traversing. */ + if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) { + CLR(FTS_NAMEONLY); + fts_lfree(sp->fts_child); + sp->fts_child = NULL; + } + + /* + * Cd to the subdirectory. + * + * If have already read and now fail to chdir, whack the list + * to make the names come out right, and set the parent errno + * so the application will eventually get an error condition. + * Set the FTS_DONTCHDIR flag so that when we logically change + * directories back to the parent we don't do a chdir. + * + * If haven't read do so. If the read fails, fts_build sets + * FTS_STOP or the fts_info field of the node. + */ + if (sp->fts_child != NULL) { + if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) { + p->fts_errno = errno; + p->fts_flags |= FTS_DONTCHDIR; + for (p = sp->fts_child; p != NULL; + p = p->fts_link) + p->fts_accpath = + p->fts_parent->fts_accpath; + } + } else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) { + if (ISSET(FTS_STOP)) + return (NULL); + return (p); + } + p = sp->fts_child; + sp->fts_child = NULL; + goto name; + } + + /* Move to the next node on this level. */ +next: tmp = p; + if ((p = p->fts_link) != NULL) { + free(tmp); + + /* + * If reached the top, return to the original directory (or + * the root of the tree), and load the paths for the next root. + */ + if (p->fts_level == FTS_ROOTLEVEL) { + if (FCHDIR(sp, sp->fts_rfd)) { + SET(FTS_STOP); + return (NULL); + } + fts_load(sp, p); + return (sp->fts_cur = p); + } + + /* + * User may have called fts_set on the node. If skipped, + * ignore. If followed, get a file descriptor so we can + * get back if necessary. + */ + if (p->fts_instr == FTS_SKIP) + goto next; + if (p->fts_instr == FTS_FOLLOW) { + p->fts_info = fts_stat(sp, p, 1); + if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) { + if ((p->fts_symfd = + _open(".", O_RDONLY, 0)) < 0) { + p->fts_errno = errno; + p->fts_info = FTS_ERR; + } else + p->fts_flags |= FTS_SYMFOLLOW; + } + p->fts_instr = FTS_NOINSTR; + } + +name: t = sp->fts_path + NAPPEND(p->fts_parent); + *t++ = '/'; + memmove(t, p->fts_name, p->fts_namelen + 1); + return (sp->fts_cur = p); + } + + /* Move up to the parent node. */ + p = tmp->fts_parent; + free(tmp); + + if (p->fts_level == FTS_ROOTPARENTLEVEL) { + /* + * Done; free everything up and set errno to 0 so the user + * can distinguish between error and EOF. + */ + free(p); + errno = 0; + return (sp->fts_cur = NULL); + } + + /* NUL terminate the pathname. */ + sp->fts_path[p->fts_pathlen] = '\0'; + + /* + * Return to the parent directory. If at a root node or came through + * a symlink, go back through the file descriptor. Otherwise, cd up + * one directory. + */ + if (p->fts_level == FTS_ROOTLEVEL) { + if (FCHDIR(sp, sp->fts_rfd)) { + SET(FTS_STOP); + return (NULL); + } + } else if (p->fts_flags & FTS_SYMFOLLOW) { + if (FCHDIR(sp, p->fts_symfd)) { + saved_errno = errno; + (void)_close(p->fts_symfd); + errno = saved_errno; + SET(FTS_STOP); + return (NULL); + } + (void)_close(p->fts_symfd); + } else if (!(p->fts_flags & FTS_DONTCHDIR) && + fts_safe_changedir(sp, p->fts_parent, -1, "..")) { + SET(FTS_STOP); + return (NULL); + } + p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP; + return (sp->fts_cur = p); +} + +/* + * Fts_set takes the stream as an argument although it's not used in this + * implementation; it would be necessary if anyone wanted to add global + * semantics to fts using fts_set. An error return is allowed for similar + * reasons. + */ +/* ARGSUSED */ +int +fts_set(sp, p, instr) + FTS *sp; + FTSENT *p; + int instr; +{ + if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW && + instr != FTS_NOINSTR && instr != FTS_SKIP) { + errno = EINVAL; + return (1); + } + p->fts_instr = instr; + return (0); +} + +FTSENT * +fts_children(sp, instr) + FTS *sp; + int instr; +{ + FTSENT *p; + int fd; + + if (instr != 0 && instr != FTS_NAMEONLY) { + errno = EINVAL; + return (NULL); + } + + /* Set current node pointer. */ + p = sp->fts_cur; + + /* + * Errno set to 0 so user can distinguish empty directory from + * an error. + */ + errno = 0; + + /* Fatal errors stop here. */ + if (ISSET(FTS_STOP)) + return (NULL); + + /* Return logical hierarchy of user's arguments. */ + if (p->fts_info == FTS_INIT) + return (p->fts_link); + + /* + * If not a directory being visited in pre-order, stop here. Could + * allow FTS_DNR, assuming the user has fixed the problem, but the + * same effect is available with FTS_AGAIN. + */ + if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */) + return (NULL); + + /* Free up any previous child list. */ + if (sp->fts_child != NULL) + fts_lfree(sp->fts_child); + + if (instr == FTS_NAMEONLY) { + SET(FTS_NAMEONLY); + instr = BNAMES; + } else + instr = BCHILD; + + /* + * If using chdir on a relative path and called BEFORE fts_read does + * its chdir to the root of a traversal, we can lose -- we need to + * chdir into the subdirectory, and we don't know where the current + * directory is, so we can't get back so that the upcoming chdir by + * fts_read will work. + */ + if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' || + ISSET(FTS_NOCHDIR)) + return (sp->fts_child = fts_build(sp, instr)); + + if ((fd = _open(".", O_RDONLY, 0)) < 0) + return (NULL); + sp->fts_child = fts_build(sp, instr); + if (fchdir(fd)) + return (NULL); + (void)_close(fd); + return (sp->fts_child); +} + +#ifndef fts_get_clientptr +#error "fts_get_clientptr not defined" +#endif + +void * +(fts_get_clientptr)(FTS *sp) +{ + + return (fts_get_clientptr(sp)); +} + +#ifndef fts_get_stream +#error "fts_get_stream not defined" +#endif + +FTS * +(fts_get_stream)(FTSENT *p) +{ + return (fts_get_stream(p)); +} + +void +fts_set_clientptr(FTS *sp, void *clientptr) +{ + + sp->fts_clientptr = clientptr; +} + +/* + * This is the tricky part -- do not casually change *anything* in here. The + * idea is to build the linked list of entries that are used by fts_children + * and fts_read. There are lots of special cases. + * + * The real slowdown in walking the tree is the stat calls. If FTS_NOSTAT is + * set and it's a physical walk (so that symbolic links can't be directories), + * we can do things quickly. First, if it's a 4.4BSD file system, the type + * of the file is in the directory entry. Otherwise, we assume that the number + * of subdirectories in a node is equal to the number of links to the parent. + * The former skips all stat calls. The latter skips stat calls in any leaf + * directories and for any files after the subdirectories in the directory have + * been found, cutting the stat calls by about 2/3. + */ +static FTSENT * +fts_build(sp, type) + FTS *sp; + int type; +{ + struct dirent *dp; + FTSENT *p, *head; + int nitems; + FTSENT *cur, *tail; + DIR *dirp; + void *oldaddr; + size_t dnamlen; + int cderrno, descend, len, level, maxlen, nlinks, /*oflag,*/ saved_errno, + nostat, doadjust; + char *cp; + + /* Set current node pointer. */ + cur = sp->fts_cur; + + /* + * Open the directory for reading. If this fails, we're done. + * If being called from fts_read, set the fts_info field. + */ +#ifdef FTS_WHITEOUT + if (ISSET(FTS_WHITEOUT)) + oflag = DTF_NODUP | DTF_REWIND; + else + oflag = DTF_HIDEW | DTF_NODUP | DTF_REWIND; +#else +#define __opendir2(path, flag) opendir(path) +#endif + if ((dirp = __opendir2(cur->fts_accpath, oflag)) == NULL) { + if (type == BREAD) { + cur->fts_info = FTS_DNR; + cur->fts_errno = errno; + } + return (NULL); + } + + /* + * Nlinks is the number of possible entries of type directory in the + * directory if we're cheating on stat calls, 0 if we're not doing + * any stat calls at all, -1 if we're doing stats on everything. + */ + if (type == BNAMES) { + nlinks = 0; + /* Be quiet about nostat, GCC. */ + nostat = 0; + } else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) { + if (fts_ufslinks(sp, cur)) + nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2); + else + nlinks = -1; + nostat = 1; + } else { + nlinks = -1; + nostat = 0; + } + +#ifdef notdef + (void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink); + (void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n", + ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT)); +#endif + /* + * If we're going to need to stat anything or we want to descend + * and stay in the directory, chdir. If this fails we keep going, + * but set a flag so we don't chdir after the post-order visit. + * We won't be able to stat anything, but we can still return the + * names themselves. Note, that since fts_read won't be able to + * chdir into the directory, it will have to return different path + * names than before, i.e. "a/b" instead of "b". Since the node + * has already been visited in pre-order, have to wait until the + * post-order visit to return the error. There is a special case + * here, if there was nothing to stat then it's not an error to + * not be able to stat. This is all fairly nasty. If a program + * needed sorted entries or stat information, they had better be + * checking FTS_NS on the returned nodes. + */ + cderrno = 0; + if (nlinks || type == BREAD) { + if (fts_safe_changedir(sp, cur, dirfd(dirp), NULL)) { + if (nlinks && type == BREAD) + cur->fts_errno = errno; + cur->fts_flags |= FTS_DONTCHDIR; + descend = 0; + cderrno = errno; + } else + descend = 1; + } else + descend = 0; + + /* + * Figure out the max file name length that can be stored in the + * current path -- the inner loop allocates more path as necessary. + * We really wouldn't have to do the maxlen calculations here, we + * could do them in fts_read before returning the path, but it's a + * lot easier here since the length is part of the dirent structure. + * + * If not changing directories set a pointer so that can just append + * each new name into the path. + */ + len = NAPPEND(cur); + if (ISSET(FTS_NOCHDIR)) { + cp = sp->fts_path + len; + *cp++ = '/'; + } else { + /* GCC, you're too verbose. */ + cp = NULL; + } + len++; + maxlen = sp->fts_pathlen - len; + + level = cur->fts_level + 1; + + /* Read the directory, attaching each entry to the `link' pointer. */ + doadjust = 0; + for (head = tail = NULL, nitems = 0; dirp && (dp = readdir(dirp));) { +#ifdef __CYGWIN__ + dnamlen = strlen (dp->d_name); +#else + dnamlen = dp->d_namlen; +#endif + if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name)) + continue; + + if ((p = fts_alloc(sp, dp->d_name, (int)dnamlen)) == NULL) + goto mem1; + if (dnamlen >= maxlen) { /* include space for NUL */ + oldaddr = sp->fts_path; + if (fts_palloc(sp, dnamlen + len + 1)) { + /* + * No more memory for path or structures. Save + * errno, free up the current structure and the + * structures already allocated. + */ +mem1: saved_errno = errno; + if (p) + free(p); + fts_lfree(head); + (void)closedir(dirp); + cur->fts_info = FTS_ERR; + SET(FTS_STOP); + errno = saved_errno; + return (NULL); + } + /* Did realloc() change the pointer? */ + if (oldaddr != sp->fts_path) { + doadjust = 1; + if (ISSET(FTS_NOCHDIR)) + cp = sp->fts_path + len; + } + maxlen = sp->fts_pathlen - len; + } + + if (len + dnamlen >= USHRT_MAX) { + /* + * In an FTSENT, fts_pathlen is a u_short so it is + * possible to wraparound here. If we do, free up + * the current structure and the structures already + * allocated, then error out with ENAMETOOLONG. + */ + free(p); + fts_lfree(head); + (void)closedir(dirp); + cur->fts_info = FTS_ERR; + SET(FTS_STOP); + errno = ENAMETOOLONG; + return (NULL); + } + p->fts_level = level; + p->fts_parent = sp->fts_cur; + p->fts_pathlen = len + dnamlen; + +#ifdef FTS_WHITEOUT + if (dp->d_type == DT_WHT) + p->fts_flags |= FTS_ISW; +#endif + + if (cderrno) { + if (nlinks) { + p->fts_info = FTS_NS; + p->fts_errno = cderrno; + } else + p->fts_info = FTS_NSOK; + p->fts_accpath = cur->fts_accpath; + } else if (nlinks == 0 +#if defined(DT_DIR) && !defined(__CYGWIN__) + || (nostat && + dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN) +#endif + ) { + p->fts_accpath = + ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name; + p->fts_info = FTS_NSOK; + } else { + /* Build a file name for fts_stat to stat. */ + if (ISSET(FTS_NOCHDIR)) { + p->fts_accpath = p->fts_path; + memmove(cp, p->fts_name, p->fts_namelen + 1); + } else + p->fts_accpath = p->fts_name; + /* Stat it. */ + p->fts_info = fts_stat(sp, p, 0); + + /* Decrement link count if applicable. */ + if (nlinks > 0 && (p->fts_info == FTS_D || + p->fts_info == FTS_DC || p->fts_info == FTS_DOT)) + --nlinks; + } + + /* We walk in directory order so "ls -f" doesn't get upset. */ + p->fts_link = NULL; + if (head == NULL) + head = tail = p; + else { + tail->fts_link = p; + tail = p; + } + ++nitems; + } + if (dirp) + (void)closedir(dirp); + + /* + * If realloc() changed the address of the path, adjust the + * addresses for the rest of the tree and the dir list. + */ + if (doadjust) + fts_padjust(sp, head); + + /* + * If not changing directories, reset the path back to original + * state. + */ + if (ISSET(FTS_NOCHDIR)) { + if (len == sp->fts_pathlen || nitems == 0) + --cp; + *cp = '\0'; + } + + /* + * If descended after called from fts_children or after called from + * fts_read and nothing found, get back. At the root level we use + * the saved fd; if one of fts_open()'s arguments is a relative path + * to an empty directory, we wind up here with no other way back. If + * can't get back, we're done. + */ + if (descend && (type == BCHILD || !nitems) && + (cur->fts_level == FTS_ROOTLEVEL ? + FCHDIR(sp, sp->fts_rfd) : + fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) { + cur->fts_info = FTS_ERR; + SET(FTS_STOP); + return (NULL); + } + + /* If didn't find anything, return NULL. */ + if (!nitems) { + if (type == BREAD) + cur->fts_info = FTS_DP; + return (NULL); + } + + /* Sort the entries. */ + if (sp->fts_compar && nitems > 1) + head = fts_sort(sp, head, nitems); + return (head); +} + +static u_short +fts_stat(sp, p, follow) + FTS *sp; + FTSENT *p; + int follow; +{ + FTSENT *t; + __dev32_t dev; + __ino64_t ino; + struct __stat64 *sbp, sb; + int saved_errno; + + /* If user needs stat info, stat buffer already allocated. */ + sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp; + +#ifdef FTS_WHITEOUT + /* Check for whiteout. */ + if (p->fts_flags & FTS_ISW) { + if (sbp != &sb) { + memset(sbp, '\0', sizeof(*sbp)); + sbp->st_mode = S_IFWHT; + } + return (FTS_W); + } +#endif + + /* + * If doing a logical walk, or application requested FTS_FOLLOW, do + * a stat(2). If that fails, check for a non-existent symlink. If + * fail, set the errno from the stat call. + */ + if (ISSET(FTS_LOGICAL) || follow) { + if (stat64(p->fts_accpath, sbp)) { + saved_errno = errno; + if (!lstat64(p->fts_accpath, sbp)) { + errno = 0; + return (FTS_SLNONE); + } + p->fts_errno = saved_errno; + goto err; + } + } else if (lstat64(p->fts_accpath, sbp)) { + p->fts_errno = errno; +err: memset(sbp, 0, sizeof(struct __stat64)); + return (FTS_NS); + } + + if (S_ISDIR(sbp->st_mode)) { + /* + * Set the device/inode. Used to find cycles and check for + * crossing mount points. Also remember the link count, used + * in fts_build to limit the number of stat calls. It is + * understood that these fields are only referenced if fts_info + * is set to FTS_D. + */ + dev = p->fts_dev = sbp->st_dev; + ino = p->fts_ino = sbp->st_ino; + p->fts_nlink = sbp->st_nlink; + + if (ISDOT(p->fts_name)) + return (FTS_DOT); + + /* + * Cycle detection is done by brute force when the directory + * is first encountered. If the tree gets deep enough or the + * number of symbolic links to directories is high enough, + * something faster might be worthwhile. + */ + for (t = p->fts_parent; + t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent) + if (ino == t->fts_ino && dev == t->fts_dev) { + p->fts_cycle = t; + return (FTS_DC); + } + return (FTS_D); + } + if (S_ISLNK(sbp->st_mode)) + return (FTS_SL); + if (S_ISREG(sbp->st_mode)) + return (FTS_F); + return (FTS_DEFAULT); +} + +/* + * The comparison function takes pointers to pointers to FTSENT structures. + * Qsort wants a comparison function that takes pointers to void. + * (Both with appropriate levels of const-poisoning, of course!) + * Use a trampoline function to deal with the difference. + */ +static int +fts_compar(const void *a, const void *b) +{ + FTS *parent; + + parent = (*(const FTSENT * const *)a)->fts_fts; + return (*parent->fts_compar)(a, b); +} + +static FTSENT * +fts_sort(sp, head, nitems) + FTS *sp; + FTSENT *head; + int nitems; +{ + FTSENT **ap, *p; + + /* + * Construct an array of pointers to the structures and call qsort(3). + * Reassemble the array in the order returned by qsort. If unable to + * sort for memory reasons, return the directory entries in their + * current order. Allocate enough space for the current needs plus + * 40 so don't realloc one entry at a time. + */ + if (nitems > sp->fts_nitems) { + sp->fts_nitems = nitems + 40; + if ((sp->fts_array = reallocf(sp->fts_array, + sp->fts_nitems * sizeof(FTSENT *))) == NULL) { + sp->fts_nitems = 0; + return (head); + } + } + for (ap = sp->fts_array, p = head; p; p = p->fts_link) + *ap++ = p; + qsort(sp->fts_array, nitems, sizeof(FTSENT *), fts_compar); + for (head = *(ap = sp->fts_array); --nitems; ++ap) + ap[0]->fts_link = ap[1]; + ap[0]->fts_link = NULL; + return (head); +} + +static FTSENT * +fts_alloc(sp, name, namelen) + FTS *sp; + const char *name; + int namelen; +{ + FTSENT *p; + size_t len; + + struct ftsent_withstat { + FTSENT ent; + struct __stat64 statbuf; + }; + + /* + * The file name is a variable length array and no stat structure is + * necessary if the user has set the nostat bit. Allocate the FTSENT + * structure, the file name and the stat structure in one chunk, but + * be careful that the stat structure is reasonably aligned. + */ + if (ISSET(FTS_NOSTAT)) + len = sizeof(FTSENT) + namelen + 1; + else + len = sizeof(struct ftsent_withstat) + namelen + 1; + + if ((p = malloc(len)) == NULL) + return (NULL); + + if (ISSET(FTS_NOSTAT)) { + p->fts_name = (char *)(p + 1); + p->fts_statp = NULL; + } else { + p->fts_name = (char *)((struct ftsent_withstat *)p + 1); + p->fts_statp = &((struct ftsent_withstat *)p)->statbuf; + } + + /* Copy the name and guarantee NUL termination. */ + memcpy(p->fts_name, name, namelen); + p->fts_name[namelen] = '\0'; + p->fts_namelen = namelen; + p->fts_path = sp->fts_path; + p->fts_errno = 0; + p->fts_flags = 0; + p->fts_instr = FTS_NOINSTR; + p->fts_number = 0; + p->fts_pointer = NULL; + p->fts_fts = sp; + return (p); +} + +static void +fts_lfree(head) + FTSENT *head; +{ + FTSENT *p; + + /* Free a linked list of structures. */ + while ((p = head)) { + head = head->fts_link; + free(p); + } +} + +/* + * Allow essentially unlimited paths; find, rm, ls should all work on any tree. + * Most systems will allow creation of paths much longer than MAXPATHLEN, even + * though the kernel won't resolve them. Add the size (not just what's needed) + * plus 256 bytes so don't realloc the path 2 bytes at a time. + */ +static int +fts_palloc(sp, more) + FTS *sp; + size_t more; +{ + + sp->fts_pathlen += more + 256; + /* + * Check for possible wraparound. In an FTS, fts_pathlen is + * a signed int but in an FTSENT it is an unsigned short. + * We limit fts_pathlen to USHRT_MAX to be safe in both cases. + */ + if (sp->fts_pathlen < 0 || sp->fts_pathlen >= USHRT_MAX) { + if (sp->fts_path) + free(sp->fts_path); + sp->fts_path = NULL; + errno = ENAMETOOLONG; + return (1); + } + sp->fts_path = reallocf(sp->fts_path, sp->fts_pathlen); + return (sp->fts_path == NULL); +} + +/* + * When the path is realloc'd, have to fix all of the pointers in structures + * already returned. + */ +static void +fts_padjust(sp, head) + FTS *sp; + FTSENT *head; +{ + FTSENT *p; + char *addr = sp->fts_path; + +#define ADJUST(p) do { \ + if ((p)->fts_accpath != (p)->fts_name) { \ + (p)->fts_accpath = \ + (char *)addr + ((p)->fts_accpath - (p)->fts_path); \ + } \ + (p)->fts_path = addr; \ +} while (0) + /* Adjust the current set of children. */ + for (p = sp->fts_child; p; p = p->fts_link) + ADJUST(p); + + /* Adjust the rest of the tree, including the current level. */ + for (p = head; p->fts_level >= FTS_ROOTLEVEL;) { + ADJUST(p); + p = p->fts_link ? p->fts_link : p->fts_parent; + } +} + +static size_t +fts_maxarglen(argv) + char * const *argv; +{ + size_t len, max; + + for (max = 0; *argv; ++argv) + if ((len = strlen(*argv)) > max) + max = len; + return (max + 1); +} + +/* + * Change to dir specified by fd or p->fts_accpath without getting + * tricked by someone changing the world out from underneath us. + * Assumes p->fts_dev and p->fts_ino are filled in. + */ +static int +fts_safe_changedir(sp, p, fd, path) + FTS *sp; + FTSENT *p; + int fd; + const char *path; +{ + int ret, oerrno, newfd; + struct __stat64 sb; + + newfd = fd; + if (ISSET(FTS_NOCHDIR)) + return (0); + if (fd < 0 && (newfd = _open(path, O_RDONLY, 0)) < 0) + return (-1); + if (fstat64(newfd, &sb)) { + ret = -1; + goto bail; + } + if (p->fts_dev != sb.st_dev || p->fts_ino != sb.st_ino) { + errno = ENOENT; /* disinformation */ + ret = -1; + goto bail; + } + ret = fchdir(newfd); +bail: + oerrno = errno; + if (fd < 0) + (void)_close(newfd); + errno = oerrno; + return (ret); +} + +/* + * Check if the filesystem for "ent" has UFS-style links. + */ +static int +fts_ufslinks(FTS *sp, const FTSENT *ent) +{ + struct _fts_private *priv; +#ifndef __CYGWIN__ + const char **cpp; +#endif + + priv = (struct _fts_private *)sp; + /* + * If this node's device is different from the previous, grab + * the filesystem information, and decide on the reliability + * of the link information from this filesystem for stat(2) + * avoidance. + */ + if (priv->ftsp_dev != ent->fts_dev) { + if (statfs(ent->fts_path, &priv->ftsp_statfs) != -1) { + priv->ftsp_dev = ent->fts_dev; +#ifdef __CYGWIN__ + /* The link count is reliable in Cygwin's directory + stat structures, unless the link count is 1. + This indicates a remote filesystem on which Cygwin + refuses to count the directory links for speed. */ + priv->ftsp_linksreliable = (ent->fts_dev == 1) ? 0 : 1; +#else + priv->ftsp_linksreliable = 0; + for (cpp = ufslike_filesystems; *cpp; cpp++) { + if (strcmp(priv->ftsp_statfs.f_fstypename, + *cpp) == 0) { + priv->ftsp_linksreliable = 1; + break; + } + } +#endif + } else { + priv->ftsp_linksreliable = 0; + } + } + return (priv->ftsp_linksreliable); +} diff --git a/winsup/cygwin/libc/ftw.c b/winsup/cygwin/libc/ftw.c new file mode 100644 index 000000000..6f84898df --- /dev/null +++ b/winsup/cygwin/libc/ftw.c @@ -0,0 +1,99 @@ +/* $OpenBSD: ftw.c,v 1.4 2004/07/07 16:05:23 millert Exp $ */ + +/* + * Copyright (c) 2003, 2004 Todd C. Miller + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Sponsored in part by the Defense Advanced Research Projects + * Agency (DARPA) and Air Force Research Laboratory, Air Force + * Materiel Command, USAF, under agreement number F39502-99-1-0512. + */ + +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static const char rcsid[] = "$OpenBSD: ftw.c,v 1.4 2004/07/07 16:05:23 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ +#endif + +#include +#if 0 +__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/ftw.c,v 1.4 2004/08/24 13:00:55 tjr Exp $"); +#endif +#include +#include +#include +#include +#include +#include + +int +ftw(const char *path, int (*fn)(const char *, const struct __stat64 *, int), + int nfds) +{ + char * const paths[2] = { (char *)path, NULL }; + FTSENT *cur; + FTS *ftsp; + int error = 0, fnflag, sverrno; + + /* XXX - nfds is currently unused */ + if (nfds < 1 || nfds > OPEN_MAX) { + errno = EINVAL; + return (-1); + } + + ftsp = fts_open(paths, FTS_LOGICAL | FTS_COMFOLLOW | FTS_NOCHDIR, NULL); + if (ftsp == NULL) + return (-1); + while ((cur = fts_read(ftsp)) != NULL) { + switch (cur->fts_info) { + case FTS_D: + fnflag = FTW_D; + break; + case FTS_DNR: + fnflag = FTW_DNR; + break; + case FTS_DP: + /* we only visit in preorder */ + continue; + case FTS_F: + case FTS_DEFAULT: + fnflag = FTW_F; + break; + case FTS_NS: + case FTS_NSOK: + case FTS_SLNONE: + fnflag = FTW_NS; + break; + case FTS_SL: + fnflag = FTW_SL; + break; + case FTS_DC: + errno = ELOOP; + /* FALLTHROUGH */ + default: + error = -1; + goto done; + } + error = fn(cur->fts_path, cur->fts_statp, fnflag); + if (error != 0) + break; + } +done: + sverrno = errno; + if (fts_close(ftsp) != 0 && error == 0) + error = -1; + else + errno = sverrno; + return (error); +} diff --git a/winsup/cygwin/libc/nftw.c b/winsup/cygwin/libc/nftw.c new file mode 100644 index 000000000..c56e19ebb --- /dev/null +++ b/winsup/cygwin/libc/nftw.c @@ -0,0 +1,118 @@ +/* $OpenBSD: nftw.c,v 1.4 2004/07/07 16:05:23 millert Exp $ */ + +/* + * Copyright (c) 2003, 2004 Todd C. Miller + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Sponsored in part by the Defense Advanced Research Projects + * Agency (DARPA) and Air Force Research Laboratory, Air Force + * Materiel Command, USAF, under agreement number F39502-99-1-0512. + */ + +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static const char rcsid[] = "$OpenBSD: nftw.c,v 1.4 2004/07/07 16:05:23 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ +#endif + +#include +#if 0 +__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/nftw.c,v 1.1.2.1 2004/08/29 06:10:53 tjr Exp $"); +#endif +#include +#include +#include +#include +#include +#include + +int +nftw(const char *path, int (*fn)(const char *, const struct __stat64 *, int, + struct FTW *), int nfds, int ftwflags) +{ + char * const paths[2] = { (char *)path, NULL }; + struct FTW ftw; + FTSENT *cur; + FTS *ftsp; + int error = 0, ftsflags, fnflag, postorder, sverrno; + + /* XXX - nfds is currently unused */ + if (nfds < 1 || nfds > OPEN_MAX) { + errno = EINVAL; + return (-1); + } + + ftsflags = FTS_COMFOLLOW; + if (!(ftwflags & FTW_CHDIR)) + ftsflags |= FTS_NOCHDIR; + if (ftwflags & FTW_MOUNT) + ftsflags |= FTS_XDEV; + if (ftwflags & FTW_PHYS) + ftsflags |= FTS_PHYSICAL; + else + ftsflags |= FTS_LOGICAL; + postorder = (ftwflags & FTW_DEPTH) != 0; + ftsp = fts_open(paths, ftsflags, NULL); + if (ftsp == NULL) + return (-1); + while ((cur = fts_read(ftsp)) != NULL) { + switch (cur->fts_info) { + case FTS_D: + if (postorder) + continue; + fnflag = FTW_D; + break; + case FTS_DNR: + fnflag = FTW_DNR; + break; + case FTS_DP: + if (!postorder) + continue; + fnflag = FTW_DP; + break; + case FTS_F: + case FTS_DEFAULT: + fnflag = FTW_F; + break; + case FTS_NS: + case FTS_NSOK: + fnflag = FTW_NS; + break; + case FTS_SL: + fnflag = FTW_SL; + break; + case FTS_SLNONE: + fnflag = FTW_SLN; + break; + case FTS_DC: + errno = ELOOP; + /* FALLTHROUGH */ + default: + error = -1; + goto done; + } + ftw.base = cur->fts_pathlen - cur->fts_namelen; + ftw.level = cur->fts_level; + error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw); + if (error != 0) + break; + } +done: + sverrno = errno; + if (fts_close(ftsp) != 0 && error == 0) + error = -1; + else + errno = sverrno; + return (error); +}