diff options
Diffstat (limited to 'io')
| -rw-r--r-- | io/fts.c | 57 | ||||
| -rw-r--r-- | io/fts.h | 26 |
2 files changed, 56 insertions, 27 deletions
diff --git a/io/fts.c b/io/fts.c index 73f502fc26..365b92e955 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 55194db9e2..3aa36663b4 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 */ |