diff options
Diffstat (limited to 'io')
| -rw-r--r-- | io/Makefile | 49 | ||||
| -rw-r--r-- | io/creat.c | 30 | ||||
| -rw-r--r-- | io/fcntl.h | 86 | ||||
| -rw-r--r-- | io/fts.c | 981 | ||||
| -rw-r--r-- | io/fts.h | 125 | ||||
| -rw-r--r-- | io/ftw.c | 216 | ||||
| -rw-r--r-- | io/ftw.h | 44 | ||||
| -rw-r--r-- | io/getdirname.c | 45 | ||||
| -rw-r--r-- | io/getwd.c | 47 | ||||
| -rw-r--r-- | io/lockf.c | 68 | ||||
| -rw-r--r-- | io/poll.h | 1 | ||||
| -rw-r--r-- | io/pwd.c | 38 | ||||
| -rw-r--r-- | io/sys/fcntl.h | 1 | ||||
| -rw-r--r-- | io/sys/poll.h | 65 | ||||
| -rw-r--r-- | io/sys/stat.h | 168 | ||||
| -rw-r--r-- | io/test-utime.c | 78 | ||||
| -rw-r--r-- | io/utime.h | 49 |
17 files changed, 2091 insertions, 0 deletions
diff --git a/io/Makefile b/io/Makefile new file mode 100644 index 0000000000..639f6b75bb --- /dev/null +++ b/io/Makefile @@ -0,0 +1,49 @@ +# Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. +# This file is part of the GNU C Library. + +# The GNU C Library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Library General Public License as +# published by the Free Software Foundation; either version 2 of the +# License, or (at your option) any later version. + +# The GNU C Library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Library General Public License for more details. + +# You should have received a copy of the GNU Library General Public +# License along with the GNU C Library; see the file COPYING.LIB. If +# not, write to the Free Software Foundation, Inc., 675 Mass Ave, +# Cambridge, MA 02139, USA. + +# +# Sub-makefile for I/O portion of the library. +# +subdir := io + +headers := sys/stat.h statbuf.h \ + fcntl.h sys/fcntl.h fcntlbits.h \ + poll.h sys/poll.h \ + utime.h ftw.h fts.h + +routines := \ + utime \ + mkfifo \ + stat fstat lstat \ + umask chmod fchmod mkdir \ + open close read write lseek access \ + fcntl flock lockf \ + dup dup2 pipe \ + creat \ + chdir fchdir \ + getcwd getwd getdirname \ + chown fchown \ + ttyname isatty \ + link symlink readlink \ + unlink rmdir \ + ftw fts poll + +others := pwd +tests := test-utime + +include ../Rules diff --git a/io/creat.c b/io/creat.c new file mode 100644 index 0000000000..ee935c87a4 --- /dev/null +++ b/io/creat.c @@ -0,0 +1,30 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <fcntl.h> +#include <sys/types.h> + +#undef creat + +/* Create FILE with protections MODE. */ +int +DEFUN(creat, (file, mode), CONST char *file AND mode_t mode) +{ + return __open(file, O_WRONLY|O_CREAT|O_TRUNC, mode); +} diff --git a/io/fcntl.h b/io/fcntl.h new file mode 100644 index 0000000000..952b2b51da --- /dev/null +++ b/io/fcntl.h @@ -0,0 +1,86 @@ +/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * POSIX Standard: 6.5 File Control Operations <fcntl.h> + */ + +#ifndef _FCNTL_H + +#define _FCNTL_H 1 +#include <features.h> + +/* This must be early so <fcntlbits.h> can define types winningly. */ +__BEGIN_DECLS + +/* Get the definitions of O_*, F_*, FD_*: all the + numbers and flag bits for `open', `fcntl', et al. */ +#include <fcntlbits.h> + +#ifdef __USE_MISC +#ifndef R_OK /* Verbatim from <unistd.h>. Ugh. */ +/* Values for the second argument to access. + These may be OR'd together. */ +#define R_OK 4 /* Test for read permission. */ +#define W_OK 2 /* Test for write permission. */ +#define X_OK 1 /* Test for execute permission. */ +#define F_OK 0 /* Test for existence. */ +#endif +#endif /* Use misc. */ + + +/* Do the file control operation described by CMD on FD. + The remaining arguments are interpreted depending on CMD. */ +extern int __fcntl __P ((int __fd, int __cmd, ...)); +extern int fcntl __P ((int __fd, int __cmd, ...)); + +/* Open FILE and return a new file descriptor for it, or -1 on error. + OFLAG determines the type of access used. If O_CREAT is on OFLAG, + the third argument is taken as a `mode_t', the mode of the created file. */ +extern int __open __P ((__const char *__file, int __oflag,...)); +extern int open __P ((__const char *__file, int __oflag,...)); + +/* Create and open FILE, with mode MODE. + This takes an `int' MODE argument because that is + what `mode_t' will be widened to. */ +extern int creat __P ((__const char *__file, __mode_t __mode)); + +#ifdef __OPTIMIZE__ +#define creat(file, m) __open((file), O_WRONLY|O_CREAT|O_TRUNC, (m)) +#endif /* Optimizing. */ + +#if defined (__USE_MISC) && !defined (F_LOCK) +/* NOTE: These declarations also appear in <unistd.h>; be sure to keep both + files consistent. Some systems have them there and some here, and some + software depends on the macros being defined without including both. */ + +/* `lockf' is a simpler interface to the locking facilities of `fcntl'. + LEN is always relative to the current file position. + The CMD argument is one of the following. */ + +#define F_ULOCK 0 /* Unlock a previously locked region. */ +#define F_LOCK 1 /* Lock a region for exclusive use. */ +#define F_TLOCK 2 /* Test and lock a region for exclusive use. */ +#define F_TEST 3 /* Test a region for other processes locks. */ + +extern int lockf __P ((int __fd, int __cmd, __off_t __len)); +#endif + +__END_DECLS + +#endif /* fcntl.h */ diff --git a/io/fts.c b/io/fts.c new file mode 100644 index 0000000000..044779d595 --- /dev/null +++ b/io/fts.c @@ -0,0 +1,981 @@ +/*- + * Copyright (c) 1990, 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fts.c 8.2 (Berkeley) 1/2/94"; +#endif /* LIBC_SCCS and not lint */ + +#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> + + +/* 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 __P((FTS *, char *, int)); +static FTSENT *fts_build __P((FTS *, int)); +static void fts_lfree __P((FTSENT *)); +static void fts_load __P((FTS *, FTSENT *)); +static size_t fts_maxarglen __P((char * const *)); +static void fts_padjust __P((FTS *, void *)); +static int fts_palloc __P((FTS *, size_t)); +static FTSENT *fts_sort __P((FTS *, FTSENT *, int)); +static u_short fts_stat __P((FTS *, 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 CHDIR(sp, path) (!ISSET(FTS_NOCHDIR) && chdir(path)) +#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)(); +{ + register FTS *sp; + register FTSENT *p, *root; + register int nitems; + FTSENT *parent, *tmp; + int len; + + /* Options check. */ + if (options & ~FTS_OPTIONMASK) { + errno = EINVAL; + return (NULL); + } + + /* Allocate/initialize the stream */ + if ((sp = malloc((u_int)sizeof(FTS))) == NULL) + return (NULL); + bzero(sp, sizeof(FTS)); + sp->fts_compar = 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 + if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN))) + goto mem1; + + /* Allocate/initialize root's parent. */ + if ((parent = fts_alloc(sp, "", 0)) == NULL) + goto mem2; + parent->fts_level = FTS_ROOTPARENTLEVEL; + + /* Allocate/initialize root(s). */ + for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) { + /* Don't allow zero-length paths. */ + if ((len = strlen(*argv)) == 0) { + 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 insure + * 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 +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; + bcopy(p->fts_name, sp->fts_path, len + 1); + if ((cp = rindex(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) { + len = strlen(++cp); + bcopy(cp, p->fts_name, 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 ? 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); + if (sp->fts_array) + 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); + } + + /* Free up the stream pointer. */ + free(sp); + + /* Set errno and return. */ + if (!ISSET(FTS_NOCHDIR) && saved_errno) { + errno = saved_errno; + return (-1); + } + return (0); +} + +/* + * Special case a root of "/" 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) + +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 && sp->fts_options & FTS_NAMEONLY) { + sp->fts_options &= ~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) { + if (CHDIR(sp, p->fts_accpath)) { + p->fts_errno = errno; + p->fts_flags |= FTS_DONTCHDIR; + for (p = sp->fts_child; p; 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; + goto name; + } + + /* Move to the next node on this level. */ +next: tmp = p; + if (p = p->fts_link) { + free(tmp); + + /* + * If reached the top, return to the original directory, and + * load the paths for the next root. + */ + if (p->fts_level == FTS_ROOTLEVEL) { + if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) { + SET(FTS_STOP); + return (NULL); + } + fts_load(sp, p); + return (sp->fts_cur = 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++ = '/'; + bcopy(p->fts_name, t, p->fts_namelen + 1); + return (sp->fts_cur = p); + } + + /* Move up to the parent node. */ + p = tmp->fts_parent; + 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); + 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 (!ISSET(FTS_NOCHDIR) && 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); + errno = saved_errno; + SET(FTS_STOP); + return (NULL); + } + (void)close(p->fts_symfd); + } else if (!(p->fts_flags & FTS_DONTCHDIR)) { + if (CHDIR(sp, "..")) { + SET(FTS_STOP); + return (NULL); + } + } + p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP; + return (sp->fts_cur = 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 && instr != FTS_AGAIN && instr != FTS_FOLLOW && + instr != FTS_NOINSTR && instr != FTS_SKIP) { + 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 && instr != FTS_NAMEONLY) { + 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. + */ + 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) + fts_lfree(sp->fts_child); + + if (instr == FTS_NAMEONLY) { + sp->fts_options |= 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 * +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 *adjaddr; + int cderrno, descend, len, level, maxlen, nlinks, saved_errno; + 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 ((dirp = opendir(cur->fts_accpath)) == 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; + else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) + nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2); + else + nlinks = -1; + +#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 (FCHDIR(sp, dirfd(dirp))) { + if (nlinks && type == BREAD) + cur->fts_errno = errno; + cur->fts_flags |= FTS_DONTCHDIR; + descend = 0; + cderrno = errno; + } 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. + */ + maxlen = sp->fts_pathlen - cur->fts_pathlen - 1; + len = NAPPEND(cur); + if (ISSET(FTS_NOCHDIR)) { + cp = sp->fts_path + len; + *cp++ = '/'; + } + + level = cur->fts_level + 1; + + /* Read the directory, attaching each entry to the `link' pointer. */ + adjaddr = NULL; + for (head = tail = NULL, nitems = 0; dp = readdir(dirp);) { + if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name)) + continue; + + if ((p = fts_alloc(sp, dp->d_name, (int)dp->d_namlen)) == NULL) + goto mem1; + if (dp->d_namlen > maxlen) { + if (fts_palloc(sp, (size_t)dp->d_namlen)) { + /* + * No more memory for path or structures. Save + * errno, free up the current structure and the + * structures already allocated. + */ +mem1: saved_errno = errno; + if (p) + free(p); + fts_lfree(head); + (void)closedir(dirp); + errno = saved_errno; + cur->fts_info = FTS_ERR; + SET(FTS_STOP); + return (NULL); + } + adjaddr = sp->fts_path; + maxlen = sp->fts_pathlen - sp->fts_cur->fts_pathlen - 1; + } + + p->fts_pathlen = len + dp->d_namlen + 1; + p->fts_parent = sp->fts_cur; + p->fts_level = level; + + 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 if (nlinks == 0 +#ifdef DT_DIR + || nlinks > 0 && + 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; + bcopy(p->fts_name, cp, 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; + } + (void)closedir(dirp); + + /* + * If had to realloc the path, adjust the addresses for the rest + * of the tree. + */ + if (adjaddr) + fts_padjust(sp, adjaddr); + + /* + * If not changing directories, reset the path back to original + * state. + */ + if (ISSET(FTS_NOCHDIR)) { + if (cp - 1 > sp->fts_path) + --cp; + *cp = '\0'; + } + + /* + * 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 (descend && (!nitems || type == BCHILD) && CHDIR(sp, "..")) { + cur->fts_info = FTS_ERR; + SET(FTS_STOP); + return (NULL); + } + + /* If didn't find anything, return NULL. */ + if (!nitems) { + if (type == BREAD) + cur->fts_info = FTS_DP; + return (NULL); + } + + /* Sort the entries. */ + if (sp->fts_compar && nitems > 1) + head = fts_sort(sp, head, nitems); + return (head); +} + +static u_short +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 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)) { + errno = 0; + return (FTS_SLNONE); + } + p->fts_errno = saved_errno; + goto err; + } + } else if (lstat(p->fts_accpath, sbp)) { + p->fts_errno = errno; +err: bzero(sbp, 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 * +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) { + sp->fts_nitems = nitems + 40; + if ((sp->fts_array = realloc(sp->fts_array, + (size_t)(sp->fts_nitems * sizeof(FTSENT *)))) == NULL) { + sp->fts_nitems = 0; + return (head); + } + } + 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 * +fts_alloc(sp, name, namelen) + FTS *sp; + char *name; + register int 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 plus the trailing NULL. */ + bcopy(name, p->fts_name, namelen + 1); + + 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 +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 +fts_palloc(sp, more) + FTS *sp; + size_t more; +{ + sp->fts_pathlen += more + 256; + sp->fts_path = realloc(sp->fts_path, (size_t)sp->fts_pathlen); + return (sp->fts_path == NULL); +} + +/* + * When the path is realloc'd, have to fix all of the pointers in structures + * already returned. + */ +static void +fts_padjust(sp, addr) + FTS *sp; + void *addr; +{ + FTSENT *p; + +#define ADJUST(p) { \ + (p)->fts_accpath = \ + (char *)addr + ((p)->fts_accpath - (p)->fts_path); \ + (p)->fts_path = addr; \ +} + /* 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(p); + p = p->fts_link ? p->fts_link : p->fts_parent; + } +} + +static size_t +fts_maxarglen(argv) + char * const *argv; +{ + size_t len, max; + + for (max = 0; *argv; ++argv) + if ((len = strlen(*argv)) > max) + max = len; + return (max); +} diff --git a/io/fts.h b/io/fts.h new file mode 100644 index 0000000000..84dbe14bc7 --- /dev/null +++ b/io/fts.h @@ -0,0 +1,125 @@ +/* + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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 8.1 (Berkeley) 6/2/93 + */ + +#ifndef _FTS_H_ +#define _FTS_H_ + +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)(); /* compare function */ + +#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_NAMEONLY 0x080 /* (private) child names only */ +#define FTS_STOP 0x100 /* (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 */ + 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; + +#include <sys/cdefs.h> + +__BEGIN_DECLS +FTSENT *fts_children __P((FTS *, int)); +int fts_close __P((FTS *)); +FTS *fts_open __P((char * const *, int, + int (*)(const FTSENT **, const FTSENT **))); +FTSENT *fts_read __P((FTS *)); +int fts_set __P((FTS *, FTSENT *, int)); +__END_DECLS + +#endif /* !_FTS_H_ */ diff --git a/io/ftw.c b/io/ftw.c new file mode 100644 index 0000000000..7b264e032e --- /dev/null +++ b/io/ftw.c @@ -0,0 +1,216 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by Ian Lance Taylor (ian@airs.com). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <errno.h> +#include <limits.h> +#include <stdlib.h> +#include <string.h> +#include <dirent.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <ftw.h> + + +#ifndef PATH_MAX +#define PATH_MAX 1024 /* XXX */ +#endif + + +/* Traverse one level of a directory tree. */ + +static int +DEFUN (ftw_dir, (dirs, level, descriptors, dir, len, func), + DIR **dirs AND int level AND int descriptors AND + char *dir AND size_t len AND + int EXFUN((*func), (CONST char *file, struct stat *status, + int flag))) +{ + int got; + struct dirent *entry; + + got = 0; + + errno = 0; + + while ((entry = readdir (dirs[level])) != NULL) + { + struct stat s; + int flag, retval, newlev; + + ++got; + + if (entry->d_name[0] == '.' + && (entry->d_namlen == 1 || + (entry->d_namlen == 2 && entry->d_name[1] == '.'))) + { + errno = 0; + continue; + } + + if (entry->d_namlen + len + 1 > PATH_MAX) + { +#ifdef ENAMETOOLONG + errno = ENAMETOOLONG; +#else + errno = ENOMEM; +#endif + return -1; + } + + dir[len] = '/'; + memcpy ((PTR) (dir + len + 1), (PTR) entry->d_name, + entry->d_namlen + 1); + + if (stat (dir, &s) < 0) + { + if (errno != EACCES && errno != ENOENT) + return -1; + flag = FTW_NS; + } + else if (S_ISDIR (s.st_mode)) + { + newlev = (level + 1) % descriptors; + + if (dirs[newlev] != NULL) + closedir (dirs[newlev]); + + dirs[newlev] = opendir (dir); + if (dirs[newlev] != NULL) + flag = FTW_D; + else + { + if (errno != EACCES) + return -1; + flag = FTW_DNR; + } + } + else + flag = FTW_F; + + retval = (*func) (dir, &s, flag); + + if (flag == FTW_D) + { + if (retval == 0) + retval = ftw_dir (dirs, newlev, descriptors, dir, + entry->d_namlen + len + 1, func); + if (dirs[newlev] != NULL) + { + int save; + + save = errno; + closedir (dirs[newlev]); + errno = save; + dirs[newlev] = NULL; + } + } + + if (retval != 0) + return retval; + + if (dirs[level] == NULL) + { + int skip; + + dir[len] = '\0'; + dirs[level] = opendir (dir); + if (dirs[level] == NULL) + return -1; + skip = got; + while (skip-- != 0) + { + errno = 0; + if (readdir (dirs[level]) == NULL) + return errno == 0 ? 0 : -1; + } + } + + errno = 0; + } + + return errno == 0 ? 0 : -1; +} + +/* Call a function on every element in a directory tree. */ + +int +DEFUN(ftw, (dir, func, descriptors), + CONST char *dir AND + int EXFUN((*func), (CONST char *file, struct stat *status, + int flag)) AND + int descriptors) +{ + DIR **dirs; + size_t len; + char buf[PATH_MAX + 1]; + struct stat s; + int flag, retval; + int i; + + if (descriptors <= 0) + descriptors = 1; + + dirs = (DIR **) __alloca (descriptors * sizeof (DIR *)); + i = descriptors; + while (i-- > 0) + dirs[i] = NULL; + + if (stat (dir, &s) < 0) + { + if (errno != EACCES && errno != ENOENT) + return -1; + flag = FTW_NS; + } + else if (S_ISDIR (s.st_mode)) + { + dirs[0] = opendir (dir); + if (dirs[0] != NULL) + flag = FTW_D; + else + { + if (errno != EACCES) + return -1; + flag = FTW_DNR; + } + } + else + flag = FTW_F; + + len = strlen (dir); + memcpy ((PTR) buf, (PTR) dir, len + 1); + + retval = (*func) (buf, &s, flag); + + if (flag == FTW_D) + { + if (retval == 0) + retval = ftw_dir (dirs, 0, descriptors, buf, len, func); + if (dirs[0] != NULL) + { + int save; + + save = errno; + closedir (dirs[0]); + errno = save; + } + } + + return retval; +} diff --git a/io/ftw.h b/io/ftw.h new file mode 100644 index 0000000000..c7c3a88305 --- /dev/null +++ b/io/ftw.h @@ -0,0 +1,44 @@ +/* Copyright (C) 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by Ian Lance Taylor (ian@airs.com). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * SVID ftw.h + */ + +#ifndef _FTW_H + +#define _FTW_H 1 +#include <features.h> + +#include <statbuf.h> + +/* The FLAG argument to the user function passed to ftw. */ +#define FTW_F 0 /* Regular file. */ +#define FTW_D 1 /* Directory. */ +#define FTW_DNR 2 /* Unreadable directory. */ +#define FTW_NS 3 /* Unstatable file. */ + +/* Call a function on every element in a directory tree. */ +extern int ftw __P ((__const char *__dir, + int (*__func) (__const char *__file, + struct stat *__status, + int __flag), + int __descriptors)); + +#endif /* ftw.h */ diff --git a/io/getdirname.c b/io/getdirname.c new file mode 100644 index 0000000000..733745b584 --- /dev/null +++ b/io/getdirname.c @@ -0,0 +1,45 @@ +/* Copyright (C) 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <unistd.h> +#include <sys/stat.h> +#include <stdlib.h> +#include <string.h> + +/* Return a malloc'd string containing the current directory name. + If the environment variable `PWD' is set, and its value is correct, + that value is used. */ + +char * +DEFUN_VOID(get_current_dir_name) +{ + char *pwd; + struct stat dotstat, pwdstat; + + pwd = getenv ("PWD"); + if (pwd != NULL && + stat (".", &dotstat) == 0 && + stat (pwd, &pwdstat) == 0 && + pwdstat.st_dev == dotstat.st_dev && + pwdstat.st_ino == dotstat.st_ino) + /* The PWD value is correct. Use it. */ + return strdup (pwd); + + return getcwd ((char *) NULL, 0); +} diff --git a/io/getwd.c b/io/getwd.c new file mode 100644 index 0000000000..fdda1cac22 --- /dev/null +++ b/io/getwd.c @@ -0,0 +1,47 @@ +/* Copyright (C) 1991, 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <errno.h> +#include <limits.h> +#include <string.h> +#include <unistd.h> + +/* Put the absolute pathname of the current working direction in BUF. + If successful, return BUF. If not, put an error message in + BUF and return NULL. BUF should be at least PATH_MAX bytes long. */ +char * +DEFUN(getwd, (buf), char *buf) +{ + if (buf == NULL) + { + errno = EINVAL; + return NULL; + } + +#ifndef PATH_MAX +#define PATH_MAX 1024 /* Arbitrary; this function is unreliable. */ +#endif + if (getcwd (buf, PATH_MAX) == NULL) + { + (void) strncpy (buf, strerror (errno), PATH_MAX); + return NULL; + } + + return buf; +} diff --git a/io/lockf.c b/io/lockf.c new file mode 100644 index 0000000000..91664197ae --- /dev/null +++ b/io/lockf.c @@ -0,0 +1,68 @@ +/* Copyright (C) 1994 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sys/types.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> + +/* lockf is a simplified interface to fcntl's locking facilities. */ + +int +lockf (int fd, int cmd, off_t len) +{ + struct flock fl; + + switch (cmd) + { + case F_TEST: + /* Test the lock: return 0 if FD is unlocked or locked by this process; + return -1, set errno to EACCES, if another process holds the lock. */ + if (fcntl (fd, F_GETLK, &fl) < 0) + return -1; + if (fl.l_type == F_UNLCK || fl.l_pid == getpid ()) + return 0; + errno = EACCES; + return -1; + + case F_ULOCK: + fl.l_type = F_UNLCK; + cmd = F_SETLK; + break; + case F_LOCK: + fl.l_type = F_WRLCK; + cmd = F_SETLKW; + break; + case F_TLOCK: + fl.l_type = F_WRLCK; + cmd = F_SETLK; + break; + + default: + errno = EINVAL; + return -1; + } + + /* lockf is always relative to the current file position. */ + fl.l_whence = SEEK_CUR; + fl.l_start = 0; + + fl.l_len = len; + + return fcntl (fd, cmd, &fl); +} diff --git a/io/poll.h b/io/poll.h new file mode 100644 index 0000000000..06fb41ab89 --- /dev/null +++ b/io/poll.h @@ -0,0 +1 @@ +#include <sys/poll.h> diff --git a/io/pwd.c b/io/pwd.c new file mode 100644 index 0000000000..7ff1948c1d --- /dev/null +++ b/io/pwd.c @@ -0,0 +1,38 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +int +DEFUN_VOID(main) +{ + char *dir = getcwd((char *) NULL, 0); + + if (dir == NULL) + perror("getcwd"); + else + { + puts(dir); + free(dir); + } + + exit(dir == NULL ? EXIT_FAILURE : EXIT_SUCCESS); +} diff --git a/io/sys/fcntl.h b/io/sys/fcntl.h new file mode 100644 index 0000000000..cd304557e7 --- /dev/null +++ b/io/sys/fcntl.h @@ -0,0 +1 @@ +#include <fcntl.h> diff --git a/io/sys/poll.h b/io/sys/poll.h new file mode 100644 index 0000000000..48b9afac9e --- /dev/null +++ b/io/sys/poll.h @@ -0,0 +1,65 @@ +/* Compatibility definitions for System V `poll' interface. +Copyright (C) 1994 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _SYS_POLL_H +#define _SYS_POLL_H + +#include <sys/cdefs.h> + +/* Data structure describing a polling request. */ +struct pollfd + { + int fd; /* File descriptor to poll. */ + short int events; /* Types of events poller cares about. */ + short int revents; /* Types of events that actually occurred. */ + }; + +/* Event types that can be polled for. These bits may be set in `events' + to indicate the interesting event types; they will appear in `revents' + to indicate the status of the file descriptor. */ +#define POLLIN 01 /* There is data to read. */ +#define POLLPRI 02 /* There is urgent data to read. */ +#define POLLOUT 04 /* Writing now will not block. */ + +/* Event types always implicitly polled for. These bits need not be set in + `events', but they will appear in `revents' to indicate the status of + the file descriptor. */ +#define POLLERR 010 /* Error condition. */ +#define POLLHUP 020 /* Hung up. */ +#define POLLNVAL 040 /* Invalid polling request. */ + +/* Canonical number of polling requests to read in at a time in poll. */ +#define NPOLLFILE 30 + + +__BEGIN_DECLS + +/* Poll the file descriptors described by the NFDS structures starting at + FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for + an event to occur; if TIMEOUT is -1, block until an event occurs. + Returns the number of file descriptors with events, zero if timed out, + or -1 for errors. */ + +extern int poll __P ((struct pollfd *__fds, unsigned long int __nfds, + int __timeout)); + +__END_DECLS + +#endif /* sys/poll.h */ + diff --git a/io/sys/stat.h b/io/sys/stat.h new file mode 100644 index 0000000000..b5b9e363d7 --- /dev/null +++ b/io/sys/stat.h @@ -0,0 +1,168 @@ +/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * POSIX Standard: 5.6 File Characteristics <sys/stat.h> + */ + +#ifndef _SYS_STAT_H + +#define _SYS_STAT_H 1 +#include <features.h> + +#include <gnu/types.h> /* For __mode_t and __dev_t. */ + +__BEGIN_DECLS + +#include <statbuf.h> + +#if defined(__USE_BSD) || defined(__USE_MISC) +#define S_IFMT __S_IFMT +#define S_IFDIR __S_IFDIR +#define S_IFCHR __S_IFCHR +#define S_IFBLK __S_IFBLK +#define S_IFREG __S_IFREG +#ifdef __S_IFLNK +#define S_IFLNK __S_IFLNK +#endif +#ifdef __S_IFSOCK +#define S_IFSOCK __S_IFSOCK +#endif +#ifdef __S_IFIFO +#define S_IFIFO __S_IFIFO +#endif +#endif + +/* Test macros for file types. */ + +#define __S_ISTYPE(mode, mask) (((mode) & __S_IFMT) == (mask)) + +#define S_ISDIR(mode) __S_ISTYPE((mode), __S_IFDIR) +#define S_ISCHR(mode) __S_ISTYPE((mode), __S_IFCHR) +#define S_ISBLK(mode) __S_ISTYPE((mode), __S_IFBLK) +#define S_ISREG(mode) __S_ISTYPE((mode), __S_IFREG) +#ifdef __S_IFIFO +#define S_ISFIFO(mode) __S_ISTYPE((mode), __S_IFIFO) +#endif + +#ifdef __USE_GNU +#ifdef __S_IFLNK +#define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK) +#endif +#ifdef __S_IFSOCK +#define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK) +#endif +#endif + + +/* Protection bits. */ + +#define S_ISUID __S_ISUID /* Set user ID on execution. */ +#define S_ISGID __S_ISGID /* Set group ID on execution. */ + +#if defined(__USE_BSD) || defined(__USE_MISC) +/* Save swapped text after use (sticky bit). This is pretty well obsolete. */ +#define S_ISVTX __S_ISVTX +#endif + +#define S_IRUSR __S_IREAD /* Read by owner. */ +#define S_IWUSR __S_IWRITE /* Write by owner. */ +#define S_IXUSR __S_IEXEC /* Execute by owner. */ +/* Read, write, and execute by owner. */ +#define S_IRWXU (__S_IREAD|__S_IWRITE|__S_IEXEC) + +#if defined(__USE_MISC) && defined(__USE_BSD) +#define S_IREAD S_IRUSR +#define S_IWRITE S_IWUSR +#define S_IEXEC S_IXUSR +#endif + +#define S_IRGRP (S_IRUSR >> 3) /* Read by group. */ +#define S_IWGRP (S_IWUSR >> 3) /* Write by group. */ +#define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */ +/* Read, write, and execute by group. */ +#define S_IRWXG (S_IRWXU >> 3) + +#define S_IROTH (S_IRGRP >> 3) /* Read by others. */ +#define S_IWOTH (S_IWGRP >> 3) /* Write by others. */ +#define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */ +/* Read, write, and execute by others. */ +#define S_IRWXO (S_IRWXG >> 3) + + +/* Get file attributes for FILE and put them in BUF. */ +extern int __stat __P ((__const char *__file, struct stat *__buf)); +extern int stat __P ((__const char *__file, struct stat *__buf)); + +/* Get file attributes for the file, device, pipe, or socket + that file descriptor FD is open on and put them in BUF. */ +extern int __fstat __P ((int __fd, struct stat *__buf)); +extern int fstat __P ((int __fd, struct stat *__buf)); + +/* Get file attributes about FILE and put them in BUF. + If FILE is a symbolic link, do not follow it. */ +extern int __lstat __P ((__const char *__file, struct stat *__buf)); +#ifdef __USE_BSD +extern int lstat __P ((__const char *__file, struct stat *__buf)); +#endif + +/* Set file access permissions for FILE to MODE. + This takes an `int' MODE argument because that + is what `mode_t's get widened to. */ +extern int __chmod __P ((__const char *__file, __mode_t __mode)); +extern int chmod __P ((__const char *__file, __mode_t __mode)); + +/* Set file access permissions of the file FD is open on to MODE. */ +extern int __fchmod __P ((int __fd, __mode_t __mode)); +#ifdef __USE_BSD +extern int fchmod __P ((int __fd, __mode_t __mode)); +#endif + + +/* Set the file creation mask of the current process to MASK, + and return the old creation mask. */ +extern __mode_t __umask __P ((__mode_t __mask)); +extern __mode_t umask __P ((__mode_t __mask)); + +#ifdef __USE_GNU +/* Get the current `umask' value without changing it. + This function is only available under the GNU Hurd. */ +extern __mode_t getumask __P ((void)); +#endif + +/* Create a new directory named PATH, with permission bits MODE. */ +extern int __mkdir __P ((__const char *__path, __mode_t __mode)); +extern int mkdir __P ((__const char *__path, __mode_t __mode)); + +/* Create a device file named PATH, with permission and special bits MODE + and device number DEV (which can be constructed from major and minor + device numbers with the `makedev' macro above). */ +extern int __mknod __P ((__const char *__path, + __mode_t __mode, __dev_t __dev)); +#if defined(__USE_MISC) || defined(__USE_BSD) +extern int mknod __P ((__const char *__path, + __mode_t __mode, __dev_t __dev)); +#endif + + +/* Create a new FIFO named PATH, with permission bits MODE. */ +extern int mkfifo __P ((__const char *__path, __mode_t __mode)); + +__END_DECLS + +#endif /* sys/stat.h */ diff --git a/io/test-utime.c b/io/test-utime.c new file mode 100644 index 0000000000..565e010815 --- /dev/null +++ b/io/test-utime.c @@ -0,0 +1,78 @@ +/* Copyright (C) 1994 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <utime.h> +#include <stdio.h> +#include <sys/stat.h> +#include <unistd.h> + +int +main () +{ + char file[L_tmpnam]; + struct utimbuf ut; + struct stat st; + int fd; + + if (tmpnam (file) == 0) + { + perror ("tmpnam"); + exit (1); + } + + fd = creat (file, 0666); + if (fd < 0) + { + perror ("creat"); + exit (1); + } + close (fd); + + ut.actime = 500000000; + ut.modtime = 500000001; + if (utime (file, &ut)) + { + perror ("utime"); + remove (file); + exit (1); + } + + if (stat (file, &st)) + { + perror ("stat"); + remove (file); + exit (1); + } + + remove (file); + + if (st.st_mtime != ut.modtime) + { + printf ("modtime %ld != %ld\n", st.st_mtime, ut.modtime); + exit (1); + } + + if (st.st_atime != ut.actime) + { + printf ("actime %ld != %ld\n", st.st_atime, ut.actime); + exit (1); + } + + puts ("Test succeeded."); + exit (0); +} diff --git a/io/utime.h b/io/utime.h new file mode 100644 index 0000000000..6985a58859 --- /dev/null +++ b/io/utime.h @@ -0,0 +1,49 @@ +/* Copyright (C) 1991, 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * POSIX Standard: 5.6.6 Set File Access and Modification Times <utime.h> + */ + +#ifndef _UTIME_H + +#define _UTIME_H 1 +#include <features.h> + +__BEGIN_DECLS + +#define __need_NULL +#include <stddef.h> + +#include <gnu/types.h> + +/* Structure describing file times. */ +struct utimbuf + { + __time_t actime; /* Access time. */ + __time_t modtime; /* Modification time. */ + }; + +/* Set the access and modification times of FILE to those given in TIMES. + If TIMES is NULL, set them to the current time. */ +extern int utime __P ((__const char *__file, + __const struct utimbuf *__times)); + +__END_DECLS + +#endif /* utime.h */ |