diff options
Diffstat (limited to 'io/fts.c')
| -rw-r--r-- | io/fts.c | 54 |
1 files changed, 32 insertions, 22 deletions
@@ -53,7 +53,7 @@ static char sccsid[] = "@(#)fts.c 8.6 (Berkeley) 8/14/94"; #endif -static FTSENT *fts_alloc (FTS *, const char *, int) internal_function; +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; @@ -93,8 +93,8 @@ fts_open(argv, options, compar) register FTS *sp; register FTSENT *p, *root; register int nitems; - FTSENT *parent, *tmp; - int len; + FTSENT *parent = NULL; + FTSENT *tmp; /* Options check. */ if (options & ~FTS_OPTIONMASK) { @@ -120,18 +120,22 @@ fts_open(argv, options, compar) #ifndef MAXPATHLEN #define MAXPATHLEN 1024 #endif - if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN))) + size_t maxarglen = fts_maxarglen(argv); + if (fts_palloc(sp, MAX(maxarglen, MAXPATHLEN))) goto mem1; /* Allocate/initialize root's parent. */ - if ((parent = fts_alloc(sp, "", 0)) == NULL) - goto mem2; - parent->fts_level = FTS_ROOTPARENTLEVEL; + 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. */ - if ((len = strlen(*argv)) == 0) { + size_t len = strlen(*argv); + if (len == 0) { __set_errno (ENOENT); goto mem3; } @@ -247,8 +251,7 @@ fts_close(sp) /* 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_array); free(sp->fts_path); /* Return to original directory, save errno if necessary. */ @@ -373,12 +376,14 @@ fts_read(sp) } 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); /* @@ -391,7 +396,7 @@ next: tmp = p; return (NULL); } fts_load(sp, p); - return (sp->fts_cur = p); + return p; } /* @@ -417,11 +422,12 @@ next: tmp = p; name: t = sp->fts_path + NAPPEND(p->fts_parent); *t++ = '/'; memmove(t, p->fts_name, p->fts_namelen + 1); - return (sp->fts_cur = p); + return p; } /* Move up to the parent node. */ p = tmp->fts_parent; + sp->fts_cur = p; free(tmp); if (p->fts_level == FTS_ROOTPARENTLEVEL) { @@ -462,7 +468,7 @@ name: t = sp->fts_path + NAPPEND(p->fts_parent); return (NULL); } p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP; - return (sp->fts_cur = p); + return p; } /* @@ -690,7 +696,7 @@ fts_build(sp, type) if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name)) continue; - if ((p = fts_alloc(sp, dp->d_name, (int)_D_EXACT_NAMLEN (dp))) == NULL) + 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; @@ -701,8 +707,7 @@ fts_build(sp, type) * structures already allocated. */ mem1: saved_errno = errno; - if (p) - free(p); + free(p); fts_lfree(head); (void)__closedir(dirp); cur->fts_info = FTS_ERR; @@ -743,6 +748,10 @@ mem1: saved_errno = errno; 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; @@ -750,7 +759,9 @@ mem1: saved_errno = errno; } else p->fts_info = FTS_NSOK; p->fts_accpath = cur->fts_accpath; - } else if (nlinks == 0 + } 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) @@ -818,6 +829,7 @@ mem1: saved_errno = errno; fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) { cur->fts_info = FTS_ERR; SET(FTS_STOP); + fts_lfree(head); return (NULL); } @@ -825,6 +837,7 @@ mem1: saved_errno = errno; if (!nitems) { if (type == BREAD) cur->fts_info = FTS_DP; + fts_lfree(head); return (NULL); } @@ -961,7 +974,7 @@ internal_function fts_alloc(sp, name, namelen) FTS *sp; const char *name; - register int namelen; + size_t namelen; { register FTSENT *p; size_t len; @@ -1031,10 +1044,7 @@ fts_palloc(sp, more) * 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; - } + free(sp->fts_path); sp->fts_path = NULL; __set_errno (ENAMETOOLONG); return (1); |