diff options
Diffstat (limited to 'io/fts.c')
| -rw-r--r-- | io/fts.c | 316 |
1 files changed, 201 insertions, 115 deletions
diff --git a/io/fts.c b/io/fts.c index 0172af7107..44473a6bc2 100644 --- a/io/fts.c +++ b/io/fts.c @@ -56,12 +56,13 @@ static char sccsid[] = "@(#)fts.c 8.6 (Berkeley) 8/14/94"; static FTSENT *fts_alloc __P((FTS *, const char *, int)) internal_function; static FTSENT *fts_build __P((FTS *, int)) internal_function; static void fts_lfree __P((FTSENT *)) internal_function; -static void fts_load __P((FTS *, FTSENT *)); +static void fts_load __P((FTS *, FTSENT *)) internal_function; static size_t fts_maxarglen __P((char * const *)) internal_function; -static void fts_padjust __P((FTS *, void *)) internal_function; +static void fts_padjust __P((FTS *, FTSENT *)) 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 *, struct dirent *, FTSENT *, int)) +static u_short fts_stat __P((FTS *, FTSENT *, int)) internal_function; +static int fts_safe_changedir __P((FTS *, FTSENT *, int, const char *)) internal_function; #ifndef MAX @@ -72,10 +73,10 @@ static u_short fts_stat __P((FTS *, struct dirent *, FTSENT *, int)) #define ISDOT(a) (a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2]))) -#define ISSET(opt) (sp->fts_options & opt) -#define SET(opt) (sp->fts_options |= opt) +#define CLR(opt) (sp->fts_options &= ~(opt)) +#define ISSET(opt) (sp->fts_options & (opt)) +#define SET(opt) (sp->fts_options |= (opt)) -#define CHDIR(sp, path) (!ISSET(FTS_NOCHDIR) && __chdir(path)) #define FCHDIR(sp, fd) (!ISSET(FTS_NOCHDIR) && __fchdir(fd)) /* fts_build flags */ @@ -104,7 +105,7 @@ fts_open(argv, options, compar) /* Allocate/initialize the stream */ if ((sp = malloc((u_int)sizeof(FTS))) == NULL) return (NULL); - __bzero(sp, sizeof(FTS)); + memset(sp, 0, sizeof(FTS)); sp->fts_compar = (int (*) __P((const void *, const void *))) compar; sp->fts_options = options; @@ -128,7 +129,7 @@ fts_open(argv, options, compar) parent->fts_level = FTS_ROOTPARENTLEVEL; /* Allocate/initialize root(s). */ - for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) { + for (root = NULL, nitems = 0; *argv != NULL; ++argv, ++nitems) { /* Don't allow zero-length paths. */ if ((len = strlen(*argv)) == 0) { __set_errno (ENOENT); @@ -139,7 +140,7 @@ 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, NULL, p, ISSET(FTS_COMFOLLOW)); + p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW)); /* Command-line "." and ".." are real directories. */ if (p->fts_info == FTS_DOT) @@ -176,7 +177,7 @@ fts_open(argv, options, compar) sp->fts_cur->fts_info = FTS_INIT; /* - * If using chdir(2), grab a file descriptor pointing to dot to insure + * 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 @@ -196,6 +197,7 @@ mem1: free(sp); } static void +internal_function fts_load(sp, p) FTS *sp; register FTSENT *p; @@ -211,10 +213,10 @@ fts_load(sp, p) * known that the path will fit. */ len = p->fts_pathlen = p->fts_namelen; - bcopy(p->fts_name, sp->fts_path, len + 1); - if ((cp = rindex(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) { + memmove(sp->fts_path, p->fts_name, len + 1); + if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) { len = strlen(++cp); - bcopy(cp, p->fts_name, len + 1); + memmove(p->fts_name, cp, len + 1); p->fts_namelen = len; } p->fts_accpath = p->fts_path = sp->fts_path; @@ -227,7 +229,6 @@ fts_close(sp) { register FTSENT *freep, *p; int saved_errno; - int retval = 0; /* * This still works if we haven't read anything -- the dummy structure @@ -237,7 +238,7 @@ fts_close(sp) if (sp->fts_cur) { for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) { freep = p; - p = p->fts_link ? p->fts_link : p->fts_parent; + p = p->fts_link != NULL ? p->fts_link : p->fts_parent; free(freep); } free(p); @@ -254,27 +255,28 @@ fts_close(sp) if (!ISSET(FTS_NOCHDIR)) { saved_errno = __fchdir(sp->fts_rfd) ? errno : 0; (void)__close(sp->fts_rfd); - } - /* Set errno and return. */ - if (!ISSET(FTS_NOCHDIR) && saved_errno) { - __set_errno (saved_errno); - retval = -1; + /* 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 retval; + free(sp); + return (0); } /* - * Special case a root of "/" so that slashes aren't appended which would - * cause paths to be written as "//foo". + * 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_level == FTS_ROOTLEVEL && p->fts_pathlen == 1 && \ - p->fts_path[0] == '/' ? 0 : p->fts_pathlen) + (p->fts_path[p->fts_pathlen - 1] == '/' \ + ? p->fts_pathlen - 1 : p->fts_pathlen) FTSENT * fts_read(sp) @@ -298,7 +300,7 @@ 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, NULL, p, 0); + p->fts_info = fts_stat(sp, p, 0); return (p); } @@ -310,7 +312,7 @@ fts_read(sp) */ if (instr == FTS_FOLLOW && (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) { - p->fts_info = fts_stat(sp, NULL, p, 1); + 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; @@ -337,8 +339,8 @@ fts_read(sp) } /* Rebuild if only read the names and now traversing. */ - if (sp->fts_child && sp->fts_options & FTS_NAMEONLY) { - sp->fts_options &= ~FTS_NAMEONLY; + if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) { + CLR(FTS_NAMEONLY); fts_lfree(sp->fts_child); sp->fts_child = NULL; } @@ -355,11 +357,12 @@ fts_read(sp) * 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) { - if (CHDIR(sp, p->fts_accpath)) { + 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; p = p->fts_link) + for (p = sp->fts_child; p != NULL; + p = p->fts_link) p->fts_accpath = p->fts_parent->fts_accpath; } @@ -375,15 +378,15 @@ fts_read(sp) /* Move to the next node on this level. */ next: tmp = p; - if ((p = p->fts_link)) { + if ((p = p->fts_link) != NULL) { free(tmp); /* - * If reached the top, return to the original directory, and - * load the paths for the next root. + * 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 (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) { + if (FCHDIR(sp, sp->fts_rfd)) { SET(FTS_STOP); return (NULL); } @@ -399,7 +402,7 @@ next: tmp = p; if (p->fts_instr == FTS_SKIP) goto next; if (p->fts_instr == FTS_FOLLOW) { - p->fts_info = fts_stat(sp, NULL, p, 1); + 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) { @@ -413,7 +416,7 @@ next: tmp = p; name: t = sp->fts_path + NAPPEND(p->fts_parent); *t++ = '/'; - bcopy(p->fts_name, t, p->fts_namelen + 1); + memmove(t, p->fts_name, p->fts_namelen + 1); return (sp->fts_cur = p); } @@ -431,7 +434,7 @@ name: t = sp->fts_path + NAPPEND(p->fts_parent); return (sp->fts_cur = NULL); } - /* Nul terminate the pathname. */ + /* NUL terminate the pathname. */ sp->fts_path[p->fts_pathlen] = '\0'; /* @@ -440,7 +443,7 @@ name: t = sp->fts_path + NAPPEND(p->fts_parent); * one directory. */ if (p->fts_level == FTS_ROOTLEVEL) { - if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) { + if (FCHDIR(sp, sp->fts_rfd)) { SET(FTS_STOP); return (NULL); } @@ -453,11 +456,10 @@ name: t = sp->fts_path + NAPPEND(p->fts_parent); return (NULL); } (void)__close(p->fts_symfd); - } else if (!(p->fts_flags & FTS_DONTCHDIR)) { - if (CHDIR(sp, "..")) { - SET(FTS_STOP); - return (NULL); - } + } 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); @@ -476,7 +478,7 @@ fts_set(sp, p, instr) FTSENT *p; int instr; { - if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW && + if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW && instr != FTS_NOINSTR && instr != FTS_SKIP) { __set_errno (EINVAL); return (1); @@ -493,7 +495,7 @@ fts_children(sp, instr) register FTSENT *p; int fd; - if (instr && instr != FTS_NAMEONLY) { + if (instr != 0 && instr != FTS_NAMEONLY) { __set_errno (EINVAL); return (NULL); } @@ -524,11 +526,11 @@ fts_children(sp, instr) return (NULL); /* Free up any previous child list. */ - if (sp->fts_child) + if (sp->fts_child != NULL) fts_lfree(sp->fts_child); if (instr == FTS_NAMEONLY) { - sp->fts_options |= FTS_NAMEONLY; + SET(FTS_NAMEONLY); instr = BNAMES; } else instr = BCHILD; @@ -573,17 +575,15 @@ fts_build(sp, type) register FTS *sp; int type; { - struct dirent *dp; + register struct dirent *dp; register FTSENT *p, *head; register int nitems; FTSENT *cur, *tail; DIR *dirp; - void *adjaddr; - int cderrno, descend, len, level, maxlen, nlinks, saved_errno; + void *oldaddr; + int cderrno, descend, len, level, maxlen, nlinks, saved_errno, + nostat, doadjust; char *cp; -#ifdef DTF_HIDEW - int oflag; -#endif /* Set current node pointer. */ cur = sp->fts_cur; @@ -592,15 +592,15 @@ 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. */ -#ifdef DTF_HIDEW - if (ISSET (FTS_WHITEOUT)) +#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 ((dirp = __opendir2(cur->fts_accpath, oflag)) == NULL) { if (type == BREAD) { cur->fts_info = FTS_DNR; cur->fts_errno = errno; @@ -613,12 +613,17 @@ fts_build(sp, type) * 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) + if (type == BNAMES) { nlinks = 0; - else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) + /* Be quiet about nostat, GCC. */ + nostat = 0; + } else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) { nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2); - else + nostat = 1; + } else { nlinks = -1; + nostat = 0; + } #ifdef notdef (void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink); @@ -642,12 +647,14 @@ fts_build(sp, type) */ cderrno = 0; if (nlinks || type == BREAD) { - if (FCHDIR(sp, dirfd(dirp))) { + 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 @@ -663,30 +670,30 @@ fts_build(sp, type) * If not changing directories set a pointer so that can just append * each new name into the path. */ - maxlen = sp->fts_pathlen - cur->fts_pathlen - 1; 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. */ - adjaddr = NULL; - head = tail = NULL; - nitems = 0; - while((dp = __readdir(dirp))) { - int namlen; - + doadjust = 0; + for (head = tail = NULL, nitems = 0; dirp && (dp = readdir(dirp));) { if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name)) continue; - namlen = _D_EXACT_NAMLEN (dp); - if ((p = fts_alloc(sp, dp->d_name, namlen)) == NULL) + if ((p = fts_alloc(sp, dp->d_name, (int)_D_EXACT_NAMLEN (dp))) == NULL) goto mem1; - if (namlen > maxlen) { - if (fts_palloc(sp, (size_t)namlen)) { + 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 @@ -697,18 +704,43 @@ mem1: saved_errno = errno; free(p); fts_lfree(head); (void)__closedir(dirp); - __set_errno (saved_errno); cur->fts_info = FTS_ERR; SET(FTS_STOP); + __set_errno (saved_errno); return (NULL); } - adjaddr = sp->fts_path; - maxlen = sp->fts_pathlen - sp->fts_cur->fts_pathlen - 1; + /* 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; } - p->fts_pathlen = len + namlen + 1; - p->fts_parent = sp->fts_cur; + 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 (cderrno) { if (nlinks) { @@ -719,8 +751,8 @@ mem1: saved_errno = errno; p->fts_accpath = cur->fts_accpath; } else if (nlinks == 0 #if defined DT_DIR && defined _DIRENT_HAVE_D_TYPE - || (nlinks > 0 && - dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN) + || (nostat && + dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN) #endif ) { p->fts_accpath = @@ -730,11 +762,11 @@ mem1: saved_errno = errno; /* Build a file name for fts_stat to stat. */ if (ISSET(FTS_NOCHDIR)) { p->fts_accpath = p->fts_path; - bcopy(p->fts_name, cp, p->fts_namelen + 1); + memmove(cp, p->fts_name, p->fts_namelen + 1); } else p->fts_accpath = p->fts_name; /* Stat it. */ - p->fts_info = fts_stat(sp, dp, p, 0); + p->fts_info = fts_stat(sp, p, 0); /* Decrement link count if applicable. */ if (nlinks > 0 && (p->fts_info == FTS_D || @@ -752,21 +784,22 @@ mem1: saved_errno = errno; } ++nitems; } - (void)__closedir(dirp); + if (dirp) + (void)__closedir(dirp); /* - * If had to realloc the path, adjust the addresses for the rest - * of the tree. + * If realloc() changed the address of the path, adjust the + * addresses for the rest of the tree and the dir list. */ - if (adjaddr) - fts_padjust(sp, adjaddr); + if (doadjust) + fts_padjust(sp, head); /* * If not changing directories, reset the path back to original * state. */ if (ISSET(FTS_NOCHDIR)) { - if (cp - 1 > sp->fts_path) + if (len == sp->fts_pathlen || nitems == 0) --cp; *cp = '\0'; } @@ -780,7 +813,8 @@ mem1: saved_errno = errno; */ if (descend && (type == BCHILD || !nitems) && (cur->fts_level == FTS_ROOTLEVEL ? - FCHDIR (sp, sp->fts_rfd) : CHDIR (sp, ".."))) { + FCHDIR(sp, sp->fts_rfd) : + fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) { cur->fts_info = FTS_ERR; SET(FTS_STOP); return (NULL); @@ -801,10 +835,9 @@ mem1: saved_errno = errno; static u_short internal_function -fts_stat(sp, dp, p, follow) +fts_stat(sp, p, follow) FTS *sp; register FTSENT *p; - struct dirent *dp; int follow; { register FTSENT *t; @@ -816,15 +849,13 @@ fts_stat(sp, dp, p, follow) /* If user needs stat info, stat buffer already allocated. */ sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp; -#if defined DT_WHT && defined S_IFWHT - /* - * 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; +#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 @@ -846,7 +877,7 @@ fts_stat(sp, dp, p, follow) } } else if (lstat(p->fts_accpath, sbp)) { p->fts_errno = errno; -err: __bzero(sbp, sizeof(struct stat)); +err: memset(sbp, 0, sizeof(struct stat)); return (FTS_NS); } @@ -943,8 +974,9 @@ fts_alloc(sp, name, namelen) if ((p = malloc(len)) == NULL) return (NULL); - /* Copy the name plus the trailing NULL. */ - bcopy(name, p->fts_name, namelen + 1); + /* 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); @@ -985,7 +1017,19 @@ fts_palloc(sp, more) size_t more; { sp->fts_pathlen += more + 256; - sp->fts_path = realloc(sp->fts_path, (size_t)sp->fts_pathlen); + /* + * 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; + __set_errno (ENAMETOOLONG); + return (1); + } + sp->fts_path = realloc(sp->fts_path, sp->fts_pathlen); return (sp->fts_path == NULL); } @@ -995,23 +1039,26 @@ fts_palloc(sp, more) */ static void internal_function -fts_padjust(sp, addr) +fts_padjust(sp, head) FTS *sp; - void *addr; + FTSENT *head; { FTSENT *p; + char *addr = sp->fts_path; -#define ADJUST(p) { \ - (p)->fts_accpath = \ - (char *)addr + ((p)->fts_accpath - (p)->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. */ - for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) { + /* 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; } @@ -1027,5 +1074,44 @@ fts_maxarglen(argv) for (max = 0; *argv; ++argv) if ((len = strlen(*argv)) > max) max = len; - return (max); + 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 stat sb; + + newfd = fd; + if (ISSET(FTS_NOCHDIR)) + return (0); + if (fd < 0 && (newfd = __open(path, O_RDONLY, 0)) < 0) + return (-1); + if (__fstat(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); } |