1397 lines
40 KiB
Diff
1397 lines
40 KiB
Diff
From a4aa01c128b04c7174d57a28f61656f966d2bd6c Mon Sep 17 00:00:00 2001
|
|
From: Salvatore Cro <salvatore.cro at st.com>
|
|
Date: Wed, 20 Apr 2011 10:49:25 +0000
|
|
Subject: Added fts support for traversing UNIX file hierarchies.
|
|
|
|
It is required by libdwfl in elfutils package.
|
|
|
|
Signed-off-by: Salvatore Cro <salvatore.cro at st.com>
|
|
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
|
|
---
|
|
diff --git a/Makefile.in b/Makefile.in
|
|
index 0c1f414..5e0bfcd 100644
|
|
--- a/Makefile.in
|
|
+++ b/Makefile.in
|
|
@@ -239,6 +239,7 @@ HEADERS_RM-$(UCLIBC_HAS_FLOATS) += complex.h fpu_control.h ieee754.
|
|
tgmath.h \
|
|
bits/math*.h
|
|
HEADERS_RM-$(findstring y,$(UCLIBC_HAS_FTW)$(UCLIBC_HAS_NFTW)) += ftw.h
|
|
+HEADERS_RM-$(UCLIBC_HAS_FTS) += fts.h
|
|
HEADERS_RM-$(UCLIBC_HAS_GETTEXT_AWARENESS) += libintl.h
|
|
HEADERS_RM-$(UCLIBC_HAS_GLIBC_CUSTOM_PRINTF) += printf.h
|
|
HEADERS_RM-$(UCLIBC_HAS_GLOB) += glob.h
|
|
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
|
|
index 8628f28..ca51aa0 100644
|
|
--- a/extra/Configs/Config.in
|
|
+++ b/extra/Configs/Config.in
|
|
@@ -1904,6 +1904,18 @@ config UCLIBC_HAS_FTW
|
|
This interface is rarely used, and adds around 4.5k. Unless you have
|
|
a pressing need for ftw(), you should probably answer N.
|
|
|
|
+config UCLIBC_HAS_FTS
|
|
+ bool "Support the fts() interface (bsd-compat)"
|
|
+ default n
|
|
+ help
|
|
+ The fts functions are provided for traversing UNIX file hierarchies.
|
|
+
|
|
+ This interface is currently used by the elfutils and adds
|
|
+ around 7.5k.
|
|
+ You should port your application to use the POSIX nftw()
|
|
+ interface.
|
|
+
|
|
+ Unless you need to build/use elfutils, you should prolly answer N.
|
|
|
|
config UCLIBC_HAS_GLOB
|
|
bool "Support the glob() interface"
|
|
diff --git a/include/fts.h b/include/fts.h
|
|
new file mode 100644
|
|
index 0000000..0a070ba
|
|
--- a/include/fts.h
|
|
+++ b/include/fts.h
|
|
@@ -0,0 +1,131 @@
|
|
+/*
|
|
+ * 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.
|
|
+ * 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
|
|
+ */
|
|
+
|
|
+#ifndef _FTS_H
|
|
+#define _FTS_H 1
|
|
+
|
|
+#include <features.h>
|
|
+#include <sys/types.h>
|
|
+
|
|
+/* The fts interface is incompatible with the LFS interface which
|
|
+ transparently uses the 64-bit file access functions. */
|
|
+#ifdef __USE_FILE_OFFSET64
|
|
+# error "<fts.h> cannot be used with -D_FILE_OFFSET_BITS==64"
|
|
+#endif
|
|
+
|
|
+
|
|
+typedef struct {
|
|
+ struct _ftsent *fts_cur; /* current node */
|
|
+ struct _ftsent *fts_child; /* linked list of children */
|
|
+ struct _ftsent **fts_array; /* sort array */
|
|
+ dev_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) (const void *, const void *); /* compare fn */
|
|
+
|
|
+#define FTS_COMFOLLOW 0x0001 /* follow command line symlinks */
|
|
+#define FTS_LOGICAL 0x0002 /* logical walk */
|
|
+#define FTS_NOCHDIR 0x0004 /* don't change directories */
|
|
+#define FTS_NOSTAT 0x0008 /* don't get stat info */
|
|
+#define FTS_PHYSICAL 0x0010 /* physical walk */
|
|
+#define FTS_SEEDOT 0x0020 /* return dot and dot-dot */
|
|
+#define FTS_XDEV 0x0040 /* don't cross devices */
|
|
+#define FTS_WHITEOUT 0x0080 /* return whiteout information */
|
|
+#define FTS_OPTIONMASK 0x00ff /* valid user option mask */
|
|
+
|
|
+#define FTS_NAMEONLY 0x0100 /* (private) child names only */
|
|
+#define FTS_STOP 0x0200 /* (private) unrecoverable error */
|
|
+ int fts_options; /* fts_open options, global flags */
|
|
+} FTS;
|
|
+
|
|
+typedef struct _ftsent {
|
|
+ struct _ftsent *fts_cycle; /* cycle node */
|
|
+ struct _ftsent *fts_parent; /* parent directory */
|
|
+ struct _ftsent *fts_link; /* next file in directory */
|
|
+ long fts_number; /* local numeric value */
|
|
+ void *fts_pointer; /* local address value */
|
|
+ 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) */
|
|
+
|
|
+ ino_t fts_ino; /* inode */
|
|
+ dev_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 */
|
|
+ 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 */
|
|
+
|
|
+ struct stat *fts_statp; /* stat(2) information */
|
|
+ char fts_name[1]; /* file name */
|
|
+} FTSENT;
|
|
+
|
|
+__BEGIN_DECLS
|
|
+FTSENT *fts_children (FTS *, int);
|
|
+int fts_close (FTS *);
|
|
+FTS *fts_open (char * const *, int,
|
|
+ int (*)(const FTSENT **, const FTSENT **));
|
|
+FTSENT *fts_read (FTS *);
|
|
+int fts_set (FTS *, FTSENT *, int) __THROW;
|
|
+__END_DECLS
|
|
+
|
|
+#endif /* fts.h */
|
|
diff --git a/libc/misc/Makefile.in b/libc/misc/Makefile.in
|
|
index 6c09d31..e01b3dc 100644
|
|
--- a/libc/misc/Makefile.in
|
|
+++ b/libc/misc/Makefile.in
|
|
@@ -18,6 +18,7 @@ @@ include $(top_srcdir)libc/misc/elf/Makefile.in
|
|
include $(top_srcdir)libc/misc/file/Makefile.in
|
|
include $(top_srcdir)libc/misc/fnmatch/Makefile.in
|
|
include $(top_srcdir)libc/misc/ftw/Makefile.in
|
|
+include $(top_srcdir)libc/misc/fts/Makefile.in
|
|
include $(top_srcdir)libc/misc/glob/Makefile.in
|
|
include $(top_srcdir)libc/misc/gnu/Makefile.in
|
|
include $(top_srcdir)libc/misc/internals/Makefile.in
|
|
diff --git a/libc/misc/fts/Makefile b/libc/misc/fts/Makefile
|
|
new file mode 100644
|
|
index 0000000..1361db3
|
|
--- a/libc/misc/fts/Makefile
|
|
+++ b/libc/misc/fts/Makefile
|
|
@@ -0,0 +1,14 @@
|
|
+# Makefile for uClibc
|
|
+#
|
|
+# Copyright (C) 2009 STMicroelectronics Ltd.
|
|
+# Author: Salvatore Cro <salvatore.cro at st.com>
|
|
+#
|
|
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
|
|
+#
|
|
+
|
|
+top_srcdir=../../../
|
|
+top_builddir=../../../
|
|
+all: objs
|
|
+include $(top_builddir)Rules.mak
|
|
+include Makefile.in
|
|
+include $(top_srcdir)Makerules
|
|
diff --git a/libc/misc/fts/Makefile.in b/libc/misc/fts/Makefile.in
|
|
new file mode 100644
|
|
index 0000000..a1d0efa
|
|
--- a/libc/misc/fts/Makefile.in
|
|
+++ b/libc/misc/fts/Makefile.in
|
|
@@ -0,0 +1,23 @@
|
|
+# FTS Makefile for uClibc
|
|
+#
|
|
+# Copyright (C) 2009 STMicroelectronics Ltd.
|
|
+# Author: Salvatore Cro <salvatore.cro at st.com>
|
|
+#
|
|
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
|
|
+#
|
|
+
|
|
+subdirs += libc/misc/fts
|
|
+CSRC := fts.c
|
|
+
|
|
+MISC_FTS_DIR := $(top_srcdir)libc/misc/fts
|
|
+MISC_FTS_OUT := $(top_builddir)libc/misc/fts
|
|
+
|
|
+MISC_FTS_SRC := $(patsubst %.c,$(MISC_FTS_DIR)/%.c,$(CSRC))
|
|
+MISC_FTS_OBJ := $(patsubst %.c,$(MISC_FTS_OUT)/%.o,$(CSRC))
|
|
+
|
|
+libc-$(UCLIBC_HAS_FTS) += $(MISC_FTS_OBJ)
|
|
+
|
|
+objclean-y += CLEAN_libc/misc/fts
|
|
+
|
|
+CLEAN_libc/misc/fts:
|
|
+ $(do_rm) $(addprefix $(MISC_FTS_OUT)/*., o os)
|
|
diff --git a/libc/misc/fts/fts.c b/libc/misc/fts/fts.c
|
|
new file mode 100644
|
|
index 0000000..ce5d158
|
|
--- a/libc/misc/fts/fts.c
|
|
+++ b/libc/misc/fts/fts.c
|
|
@@ -0,0 +1,1145 @@
|
|
+/*-
|
|
+ * 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.
|
|
+ * 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.
|
|
+ */
|
|
+
|
|
+#include <sys/param.h>
|
|
+#include <sys/stat.h>
|
|
+#include <fcntl.h>
|
|
+#include <dirent.h>
|
|
+#include <errno.h>
|
|
+#include <fts.h>
|
|
+#include <stdlib.h>
|
|
+#include <string.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+#ifdef __UCLIBC_HAS_LFS__
|
|
+# include <_lfs_64.h>
|
|
+#else
|
|
+# define stat64 stat
|
|
+# define fstat64 fstat
|
|
+#endif
|
|
+
|
|
+/* Largest alignment size needed, minus one.
|
|
+ Usually long double is the worst case. */
|
|
+#ifndef ALIGNBYTES
|
|
+#define ALIGNBYTES (__alignof__ (long double) - 1)
|
|
+#endif
|
|
+/* Align P to that size. */
|
|
+#ifndef ALIGN
|
|
+#define ALIGN(p) (((unsigned long int) (p) + ALIGNBYTES) & ~ALIGNBYTES)
|
|
+#endif
|
|
+
|
|
+
|
|
+static FTSENT *fts_alloc (FTS *, const char *, size_t) internal_function;
|
|
+static FTSENT *fts_build (FTS *, int) internal_function;
|
|
+static void fts_lfree (FTSENT *) internal_function;
|
|
+static void fts_load (FTS *, FTSENT *) internal_function;
|
|
+static size_t fts_maxarglen (char * const *) internal_function;
|
|
+static void fts_padjust (FTS *, FTSENT *) internal_function;
|
|
+static int fts_palloc (FTS *, size_t) internal_function;
|
|
+static FTSENT *fts_sort (FTS *, FTSENT *, int) internal_function;
|
|
+static u_short fts_stat (FTS *, FTSENT *, int) internal_function;
|
|
+static int fts_safe_changedir (FTS *, FTSENT *, int, const char *)
|
|
+ internal_function;
|
|
+
|
|
+#ifndef MAX
|
|
+#define MAX(a, b) ({ __typeof__ (a) _a = (a); \
|
|
+ __typeof__ (b) _b = (b); \
|
|
+ _a > _b ? _a : _b; })
|
|
+#endif
|
|
+
|
|
+#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 */
|
|
+
|
|
+FTS *
|
|
+fts_open(argv, options, compar)
|
|
+ char * const *argv;
|
|
+ register int options;
|
|
+ int (*compar) (const FTSENT **, const FTSENT **);
|
|
+{
|
|
+ register FTS *sp;
|
|
+ register FTSENT *p, *root;
|
|
+ register int nitems;
|
|
+ FTSENT *parent = NULL;
|
|
+ FTSENT *tmp = NULL;
|
|
+
|
|
+ /* Options check. */
|
|
+ if (options & ~FTS_OPTIONMASK) {
|
|
+ __set_errno (EINVAL);
|
|
+ return (NULL);
|
|
+ }
|
|
+
|
|
+ /* Allocate/initialize the stream */
|
|
+ if ((sp = malloc((u_int)sizeof(FTS))) == NULL)
|
|
+ return (NULL);
|
|
+ memset(sp, 0, sizeof(FTS));
|
|
+ sp->fts_compar = (int (*) (const void *, const void *)) compar;
|
|
+ sp->fts_options = options;
|
|
+
|
|
+ /* 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.
|
|
+ */
|
|
+#ifndef MAXPATHLEN
|
|
+#define MAXPATHLEN 1024
|
|
+#endif
|
|
+ size_t maxarglen = fts_maxarglen(argv);
|
|
+ if (fts_palloc(sp, MAX(maxarglen, MAXPATHLEN)))
|
|
+ goto mem1;
|
|
+
|
|
+ /* Allocate/initialize root's parent. */
|
|
+ if (*argv != NULL) {
|
|
+ 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. */
|
|
+ size_t len = strlen(*argv);
|
|
+ if (len == 0) {
|
|
+ __set_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
|
|
+internal_function
|
|
+fts_load(sp, p)
|
|
+ FTS *sp;
|
|
+ register FTSENT *p;
|
|
+{
|
|
+ register int len;
|
|
+ register 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;
|
|
+{
|
|
+ register 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);
|
|
+ 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);
|
|
+ __set_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)
|
|
+ register FTS *sp;
|
|
+{
|
|
+ register FTSENT *p, *tmp;
|
|
+ register int instr;
|
|
+ register 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;
|
|
+ sp->fts_cur = p;
|
|
+ goto name;
|
|
+ }
|
|
+
|
|
+ /* Move to the next node on this level. */
|
|
+next: tmp = p;
|
|
+ if ((p = p->fts_link) != NULL) {
|
|
+ sp->fts_cur = p;
|
|
+ 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 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 p;
|
|
+ }
|
|
+
|
|
+ /* Move up to the parent node. */
|
|
+ p = tmp->fts_parent;
|
|
+ sp->fts_cur = p;
|
|
+ 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);
|
|
+ __set_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);
|
|
+ __set_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 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) {
|
|
+ __set_errno (EINVAL);
|
|
+ return (1);
|
|
+ }
|
|
+ p->fts_instr = instr;
|
|
+ return (0);
|
|
+}
|
|
+
|
|
+FTSENT *
|
|
+fts_children(sp, instr)
|
|
+ register FTS *sp;
|
|
+ int instr;
|
|
+{
|
|
+ register FTSENT *p;
|
|
+ int fd;
|
|
+
|
|
+ if (instr != 0 && instr != FTS_NAMEONLY) {
|
|
+ __set_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.
|
|
+ */
|
|
+ __set_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);
|
|
+}
|
|
+
|
|
+/*
|
|
+ * 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 *
|
|
+internal_function
|
|
+fts_build(sp, type)
|
|
+ register FTS *sp;
|
|
+ int type;
|
|
+{
|
|
+ register struct dirent *dp;
|
|
+ register FTSENT *p, *head;
|
|
+ register int nitems;
|
|
+ FTSENT *cur, *tail;
|
|
+ DIR *dirp;
|
|
+ void *oldaddr;
|
|
+ int cderrno, descend, len, level, nlinks, saved_errno,
|
|
+ nostat, doadjust;
|
|
+ size_t maxlen;
|
|
+ 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.
|
|
+ */
|
|
+#if defined FTS_WHITEOUT && 0
|
|
+ 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)) {
|
|
+ nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2);
|
|
+ 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;
|
|
+ (void)closedir(dirp);
|
|
+ dirp = NULL;
|
|
+ } 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));) {
|
|
+ if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
|
|
+ continue;
|
|
+
|
|
+ if ((p = fts_alloc(sp, dp->d_name, _D_EXACT_NAMLEN (dp))) == NULL)
|
|
+ goto mem1;
|
|
+ if (_D_EXACT_NAMLEN (dp) >= maxlen) {/* include space for NUL */
|
|
+ oldaddr = sp->fts_path;
|
|
+ if (fts_palloc(sp, _D_EXACT_NAMLEN (dp) + 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;
|
|
+ free(p);
|
|
+ fts_lfree(head);
|
|
+ (void)closedir(dirp);
|
|
+ cur->fts_info = FTS_ERR;
|
|
+ SET(FTS_STOP);
|
|
+ __set_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 + _D_EXACT_NAMLEN (dp) >= 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);
|
|
+ __set_errno (ENAMETOOLONG);
|
|
+ return (NULL);
|
|
+ }
|
|
+ p->fts_level = level;
|
|
+ p->fts_parent = sp->fts_cur;
|
|
+ p->fts_pathlen = len + _D_EXACT_NAMLEN (dp);
|
|
+
|
|
+#if defined FTS_WHITEOUT && 0
|
|
+ if (dp->d_type == DT_WHT)
|
|
+ p->fts_flags |= FTS_ISW;
|
|
+#endif
|
|
+
|
|
+#if 0
|
|
+ /* Unreachable code. cderrno is only ever set to a nonnull
|
|
+ value if dirp is closed at the same time. But then we
|
|
+ cannot enter this loop. */
|
|
+ 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
|
|
+#endif
|
|
+ if (nlinks == 0
|
|
+#if defined DT_DIR && defined _DIRENT_HAVE_D_TYPE
|
|
+ || (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);
|
|
+ fts_lfree(head);
|
|
+ return (NULL);
|
|
+ }
|
|
+
|
|
+ /* If didn't find anything, return NULL. */
|
|
+ if (!nitems) {
|
|
+ if (type == BREAD)
|
|
+ cur->fts_info = FTS_DP;
|
|
+ fts_lfree(head);
|
|
+ return (NULL);
|
|
+ }
|
|
+
|
|
+ /* Sort the entries. */
|
|
+ if (sp->fts_compar && nitems > 1)
|
|
+ head = fts_sort(sp, head, nitems);
|
|
+ return (head);
|
|
+}
|
|
+
|
|
+static u_short
|
|
+internal_function
|
|
+fts_stat(sp, p, follow)
|
|
+ FTS *sp;
|
|
+ register FTSENT *p;
|
|
+ int follow;
|
|
+{
|
|
+ register FTSENT *t;
|
|
+ register dev_t dev;
|
|
+ register ino_t ino;
|
|
+ struct stat *sbp, sb;
|
|
+ int saved_errno;
|
|
+
|
|
+ /* If user needs stat info, stat buffer already allocated. */
|
|
+ sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
|
|
+
|
|
+#if defined FTS_WHITEOUT && 0
|
|
+ /* 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 (stat(p->fts_accpath, sbp)) {
|
|
+ saved_errno = errno;
|
|
+ if (!lstat(p->fts_accpath, sbp)) {
|
|
+ __set_errno (0);
|
|
+ return (FTS_SLNONE);
|
|
+ }
|
|
+ p->fts_errno = saved_errno;
|
|
+ goto err;
|
|
+ }
|
|
+ } else if (lstat(p->fts_accpath, sbp)) {
|
|
+ p->fts_errno = errno;
|
|
+err: memset(sbp, 0, sizeof(struct stat));
|
|
+ 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);
|
|
+}
|
|
+
|
|
+static FTSENT *
|
|
+internal_function
|
|
+fts_sort(sp, head, nitems)
|
|
+ FTS *sp;
|
|
+ FTSENT *head;
|
|
+ register int nitems;
|
|
+{
|
|
+ register 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) {
|
|
+ struct _ftsent **a;
|
|
+
|
|
+ sp->fts_nitems = nitems + 40;
|
|
+ if ((a = realloc(sp->fts_array,
|
|
+ (size_t)(sp->fts_nitems * sizeof(FTSENT *)))) == NULL) {
|
|
+ free(sp->fts_array);
|
|
+ sp->fts_array = NULL;
|
|
+ sp->fts_nitems = 0;
|
|
+ return (head);
|
|
+ }
|
|
+ sp->fts_array = a;
|
|
+ }
|
|
+ for (ap = sp->fts_array, p = head; p; p = p->fts_link)
|
|
+ *ap++ = p;
|
|
+ qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), sp->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 *
|
|
+internal_function
|
|
+fts_alloc(sp, name, namelen)
|
|
+ FTS *sp;
|
|
+ const char *name;
|
|
+ size_t namelen;
|
|
+{
|
|
+ register FTSENT *p;
|
|
+ size_t len;
|
|
+
|
|
+ /*
|
|
+ * 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. Since the
|
|
+ * fts_name field is declared to be of size 1, the fts_name pointer is
|
|
+ * namelen + 2 before the first possible address of the stat structure.
|
|
+ */
|
|
+ len = sizeof(FTSENT) + namelen;
|
|
+ if (!ISSET(FTS_NOSTAT))
|
|
+ len += sizeof(struct stat) + ALIGNBYTES;
|
|
+ if ((p = malloc(len)) == NULL)
|
|
+ return (NULL);
|
|
+
|
|
+ /* Copy the name and guarantee NUL termination. */
|
|
+ memmove(p->fts_name, name, namelen);
|
|
+ p->fts_name[namelen] = '\0';
|
|
+
|
|
+ if (!ISSET(FTS_NOSTAT))
|
|
+ p->fts_statp = (struct stat *)ALIGN(p->fts_name + namelen + 2);
|
|
+ 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;
|
|
+ return (p);
|
|
+}
|
|
+
|
|
+static void
|
|
+internal_function
|
|
+fts_lfree(head)
|
|
+ register FTSENT *head;
|
|
+{
|
|
+ register 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
|
|
+internal_function
|
|
+fts_palloc(sp, more)
|
|
+ FTS *sp;
|
|
+ size_t more;
|
|
+{
|
|
+ char *p;
|
|
+
|
|
+ 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) {
|
|
+ free(sp->fts_path);
|
|
+ sp->fts_path = NULL;
|
|
+ __set_errno (ENAMETOOLONG);
|
|
+ return (1);
|
|
+ }
|
|
+ p = realloc(sp->fts_path, sp->fts_pathlen);
|
|
+ if (p == NULL) {
|
|
+ free(sp->fts_path);
|
|
+ sp->fts_path = NULL;
|
|
+ return 1;
|
|
+ }
|
|
+ sp->fts_path = p;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * When the path is realloc'd, have to fix all of the pointers in structures
|
|
+ * already returned.
|
|
+ */
|
|
+static void
|
|
+internal_function
|
|
+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
|
|
+internal_function
|
|
+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
|
|
+internal_function
|
|
+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) {
|
|
+ __set_errno (ENOENT); /* disinformation */
|
|
+ ret = -1;
|
|
+ goto bail;
|
|
+ }
|
|
+ ret = fchdir(newfd);
|
|
+bail:
|
|
+ oerrno = errno;
|
|
+ if (fd < 0)
|
|
+ (void)close(newfd);
|
|
+ __set_errno (oerrno);
|
|
+ return (ret);
|
|
+}
|
|
--
|
|
cgit v0.9.0.1-2-gef13
|
|
|