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-rw-r--r--io/fts.c57
-rw-r--r--io/fts.h26
2 files changed, 56 insertions, 27 deletions
diff --git a/io/fts.c b/io/fts.c
index 73f502f..365b92e 100644
--- a/io/fts.c
+++ b/io/fts.c
@@ -1,5 +1,5 @@
/*-
- * Copyright (c) 1990, 1993
+ * 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
@@ -32,7 +32,7 @@
*/
#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)fts.c 8.2 (Berkeley) 1/2/94";
+static char sccsid[] = "@(#)fts.c 8.6 (Berkeley) 8/14/94";
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
@@ -65,7 +65,8 @@ static size_t fts_maxarglen __P((char * const *)) internal_function;
static void fts_padjust __P((FTS *, void *)) internal_function;
static int fts_palloc __P((FTS *, size_t)) internal_function;
static FTSENT *fts_sort __P((FTS *, FTSENT *, int)) internal_function;
-static u_short fts_stat __P((FTS *, FTSENT *, int)) internal_function;
+static u_short fts_stat __P((FTS *, struct dirent *, FTSENT *, int))
+ internal_function;
#ifndef MAX
#define MAX(a, b) ({ __typeof__ (a) _a = (a); \
@@ -142,7 +143,7 @@ fts_open(argv, options, compar)
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));
+ p->fts_info = fts_stat(sp, NULL, p, ISSET(FTS_COMFOLLOW));
/* Command-line "." and ".." are real directories. */
if (p->fts_info == FTS_DOT)
@@ -298,7 +299,7 @@ fts_read(sp)
/* 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);
+ p->fts_info = fts_stat(sp, NULL, p, 0);
return (p);
}
@@ -310,7 +311,7 @@ fts_read(sp)
*/
if (instr == FTS_FOLLOW &&
(p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
- p->fts_info = fts_stat(sp, p, 1);
+ p->fts_info = fts_stat(sp, NULL, p, 1);
if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
if ((p->fts_symfd = open(".", O_RDONLY, 0)) < 0) {
p->fts_errno = errno;
@@ -398,7 +399,7 @@ next: tmp = p;
if (p->fts_instr == FTS_SKIP)
goto next;
if (p->fts_instr == FTS_FOLLOW) {
- p->fts_info = fts_stat(sp, p, 1);
+ p->fts_info = fts_stat(sp, NULL, p, 1);
if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
if ((p->fts_symfd =
open(".", O_RDONLY, 0)) < 0) {
@@ -577,7 +578,7 @@ fts_build(sp, type)
FTSENT *cur, *tail;
DIR *dirp;
void *adjaddr;
- int cderrno, descend, len, level, maxlen, nlinks, saved_errno;
+ int cderrno, descend, len, level, maxlen, nlinks, oflag, saved_errno;
char *cp;
/* Set current node pointer. */
@@ -587,7 +588,15 @@ fts_build(sp, type)
* Open the directory for reading. If this fails, we're done.
* If being called from fts_read, set the fts_info field.
*/
- if ((dirp = opendir(cur->fts_accpath)) == NULL) {
+#ifdef DTF_HIDEW
+ 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;
@@ -719,7 +728,7 @@ mem1: saved_errno = errno;
} else
p->fts_accpath = p->fts_name;
/* Stat it. */
- p->fts_info = fts_stat(sp, p, 0);
+ p->fts_info = fts_stat(sp, dp, p, 0);
/* Decrement link count if applicable. */
if (nlinks > 0 && (p->fts_info == FTS_D ||
@@ -757,11 +766,15 @@ mem1: saved_errno = errno;
}
/*
- * If descended after called from fts_children or called from
- * fts_read and didn't find anything, get back. If can't get
- * back, done.
+ * 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 && (!nitems || type == BCHILD) && CHDIR(sp, "..")) {
+ if (descend && (type == BCHILD || !nitems) &&
+ (cur->fts_level == FTS_ROOTLEVEL ?
+ FCHDIR (sp, sp->fts_rfd) : CHDIR (sp, ".."))) {
cur->fts_info = FTS_ERR;
SET(FTS_STOP);
return (NULL);
@@ -782,9 +795,10 @@ mem1: saved_errno = errno;
static u_short
internal_function
-fts_stat(sp, p, follow)
+fts_stat(sp, dp, p, follow)
FTS *sp;
register FTSENT *p;
+ struct dirent *dp;
int follow;
{
register FTSENT *t;
@@ -796,6 +810,19 @@ fts_stat(sp, p, follow)
/* If user needs stat info, stat buffer already allocated. */
sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+#ifdef DT_WHT
+ /*
+ * Whited-out files don't really exist. However, there's stat(2) file
+ * mask for them, so we set it so that programs (i.e., find) don't have
+ * to test FTS_W separately from other file types.
+ */
+ if (dp != NULL && dp->d_type == DT_WHT) {
+ memset(sbp, 0, sizeof(struct stat));
+ 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
diff --git a/io/fts.h b/io/fts.h
index 55194db..3aa3666 100644
--- a/io/fts.h
+++ b/io/fts.h
@@ -30,13 +30,13 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * @(#)fts.h 8.1 (Berkeley) 6/2/93
+ * @(#)fts.h 8.3 (Berkeley) 8/14/94
*/
#ifndef _FTS_H
#define _FTS_H 1
-#include <sys/cdefs.h>
+#include <features.h>
#include <sys/types.h>
typedef struct {
@@ -50,17 +50,18 @@ typedef struct {
int fts_nitems; /* elements in the sort array */
int (*fts_compar) __P((const void *, const void *)); /* compare fn */
-#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 */
-#define FTS_OPTIONMASK 0x07f /* valid user option mask */
+#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 0x080 /* (private) child names only */
-#define FTS_STOP 0x100 /* (private) unrecoverable error */
+#define FTS_NAMEONLY 0x0100 /* (private) child names only */
+#define FTS_STOP 0x0200 /* (private) unrecoverable error */
int fts_options; /* fts_open options, global flags */
} FTS;
@@ -98,6 +99,7 @@ typedef struct _ftsent {
#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 */
generated by cgit v1.1 at 2024-09-02 00:19:36 +0000