diff options
Diffstat (limited to 'bin/pax/ftree.c')
| -rw-r--r-- | bin/pax/ftree.c | 741 |
1 files changed, 0 insertions, 741 deletions
diff --git a/bin/pax/ftree.c b/bin/pax/ftree.c deleted file mode 100644 index 0d45429..0000000 --- a/bin/pax/ftree.c +++ /dev/null @@ -1,741 +0,0 @@ -/* $NetBSD: ftree.c,v 1.42 2012/09/27 00:44:59 christos Exp $ */ - -/*- - * Copyright (c) 1992 Keith Muller. - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Keith Muller of the University of California, San Diego. - * - * 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. 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. - */ - -/*- - * Copyright (c) 2001 The NetBSD Foundation, Inc. - * All rights reserved. - * - * This code is derived from software contributed to The NetBSD Foundation - * by Luke Mewburn of Wasabi Systems. - * - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 HAVE_NBTOOL_CONFIG_H -#include "nbtool_config.h" -#endif - -#include <sys/cdefs.h> -#if !defined(lint) -#if 0 -static char sccsid[] = "@(#)ftree.c 8.2 (Berkeley) 4/18/94"; -#else -__RCSID("$NetBSD: ftree.c,v 1.42 2012/09/27 00:44:59 christos Exp $"); -#endif -#endif /* not lint */ - -#include <sys/types.h> -#include <sys/time.h> -#include <sys/stat.h> -#include <sys/param.h> -#include <ctype.h> -#include <errno.h> -#include <fts.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include "pax.h" -#include "ftree.h" -#include "extern.h" -#include "options.h" -#ifndef SMALL -#include "mtree.h" -#endif /* SMALL */ - -/* - * routines to interface with the fts library function. - * - * file args supplied to pax are stored on a single linked list (of type FTREE) - * and given to fts to be processed one at a time. pax "selects" files from - * the expansion of each arg into the corresponding file tree (if the arg is a - * directory, otherwise the node itself is just passed to pax). The selection - * is modified by the -n and -u flags. The user is informed when a specific - * file arg does not generate any selected files. -n keeps expanding the file - * tree arg until one of its files is selected, then skips to the next file - * arg. when the user does not supply the file trees as command line args to - * pax, they are read from stdin - */ - -static FTS *ftsp = NULL; /* current FTS handle */ -static int ftsopts; /* options to be used on fts_open */ -static char *farray[2]; /* array for passing each arg to fts */ -static FTREE *fthead = NULL; /* head of linked list of file args */ -static FTREE *fttail = NULL; /* tail of linked list of file args */ -static FTREE *ftcur = NULL; /* current file arg being processed */ -static FTSENT *ftent = NULL; /* current file tree entry */ -static int ftree_skip; /* when set skip to next file arg */ -#ifndef SMALL -static NODE *ftnode = NULL; /* mtree(8) specfile; used by -M */ -#endif /* SMALL */ - -static int ftree_arg(void); - -#define FTS_ERRNO(x) (x)->fts_errno - -/* - * ftree_start() - * initialize the options passed to fts_open() during this run of pax - * options are based on the selection of pax options by the user - * fts_start() also calls fts_arg() to open the first valid file arg. We - * also attempt to reset directory access times when -t (tflag) is set. - * Return: - * 0 if there is at least one valid file arg to process, -1 otherwise - */ - -int -ftree_start(void) -{ - -#ifndef SMALL - /* - * if -M is given, the list of filenames on stdin is actually - * an mtree(8) specfile, so parse the specfile into a NODE * - * tree at ftnode, for use by next_file() - */ - if (Mflag) { - if (fthead != NULL) { - tty_warn(1, - "The -M flag is only supported when reading file list from stdin"); - return -1; - } - ftnode = spec(stdin); - if (ftnode != NULL && - (ftnode->type != F_DIR || strcmp(ftnode->name, ".") != 0)) { - tty_warn(1, - "First node of specfile is not `.' directory"); - return -1; - } - return 0; - } -#endif /* SMALL */ - - /* - * set up the operation mode of fts, open the first file arg. We must - * use FTS_NOCHDIR, as the user may have to open multiple archives and - * if fts did a chdir off into the boondocks, we may create an archive - * volume in an place where the user did not expect to. - */ - ftsopts = FTS_NOCHDIR; - - /* - * optional user flags that effect file traversal - * -H command line symlink follow only (half follow) - * -L follow sylinks (logical) - * -P do not follow sylinks (physical). This is the default. - * -X do not cross over mount points - * -t preserve access times on files read. - * -n select only the first member of a file tree when a match is found - * -d do not extract subtrees rooted at a directory arg. - */ - if (Lflag) - ftsopts |= FTS_LOGICAL; - else - ftsopts |= FTS_PHYSICAL; - if (Hflag) - ftsopts |= FTS_COMFOLLOW; - if (Xflag) - ftsopts |= FTS_XDEV; - - if ((fthead == NULL) && ((farray[0] = malloc(PAXPATHLEN+2)) == NULL)) { - tty_warn(1, "Unable to allocate memory for file name buffer"); - return -1; - } - - if (ftree_arg() < 0) - return -1; - if (tflag && (atdir_start() < 0)) - return -1; - return 0; -} - -/* - * ftree_add() - * add the arg to the linked list of files to process. Each will be - * processed by fts one at a time - * Return: - * 0 if added to the linked list, -1 if failed - */ - -int -ftree_add(char *str, int isdir) -{ - FTREE *ft; - int len; - - /* - * simple check for bad args - */ - if ((str == NULL) || (*str == '\0')) { - tty_warn(0, "Invalid file name argument"); - return -1; - } - - /* - * allocate FTREE node and add to the end of the linked list (args are - * processed in the same order they were passed to pax). Get rid of any - * trailing / the user may pass us. (watch out for / by itself). - */ - if ((ft = (FTREE *)malloc(sizeof(FTREE))) == NULL) { - tty_warn(0, "Unable to allocate memory for filename"); - return -1; - } - - if (((len = strlen(str) - 1) > 0) && (str[len] == '/')) - str[len] = '\0'; - ft->fname = str; - ft->refcnt = -isdir; - ft->fow = NULL; - if (fthead == NULL) { - fttail = fthead = ft; - return 0; - } - fttail->fow = ft; - fttail = ft; - return 0; -} - -/* - * ftree_sel() - * this entry has been selected by pax. bump up reference count and handle - * -n and -d processing. - */ - -void -ftree_sel(ARCHD *arcn) -{ - /* - * set reference bit for this pattern. This linked list is only used - * when file trees are supplied pax as args. The list is not used when - * the trees are read from stdin. - */ - if (ftcur != NULL) - ftcur->refcnt = 1; - - /* - * if -n we are done with this arg, force a skip to the next arg when - * pax asks for the next file in next_file(). - * if -M we don't use fts(3), so the rest of this function is moot. - * if -d we tell fts only to match the directory (if the arg is a dir) - * and not the entire file tree rooted at that point. - */ - if (nflag) - ftree_skip = 1; - - if (Mflag || !dflag || (arcn->type != PAX_DIR)) - return; - - if (ftent != NULL) - (void)fts_set(ftsp, ftent, FTS_SKIP); -} - -/* - * ftree_chk() - * called at end on pax execution. Prints all those file args that did not - * have a selected member (reference count still 0) - */ - -void -ftree_chk(void) -{ - FTREE *ft; - int wban = 0; - - /* - * make sure all dir access times were reset. - */ - if (tflag) - atdir_end(); - - /* - * walk down list and check reference count. Print out those members - * that never had a match - */ - for (ft = fthead; ft != NULL; ft = ft->fow) { - if (ft->refcnt != 0) - continue; - if (wban == 0) { - tty_warn(1, - "WARNING! These file names were not selected:"); - ++wban; - } - (void)fprintf(stderr, "%s\n", ft->fname); - } -} - -/* - * ftree_arg() - * Get the next file arg for fts to process. Can be from either the linked - * list or read from stdin when the user did not them as args to pax. Each - * arg is processed until the first successful fts_open(). - * Return: - * 0 when the next arg is ready to go, -1 if out of file args (or EOF on - * stdin). - */ - -static int -ftree_arg(void) -{ - /* - * close off the current file tree - */ - if (ftsp != NULL) { - (void)fts_close(ftsp); - ftsp = NULL; - ftent = NULL; - } - - /* - * keep looping until we get a valid file tree to process. Stop when we - * reach the end of the list (or get an eof on stdin) - */ - for(;;) { - if (fthead == NULL) { - int i, c = EOF; - /* - * the user didn't supply any args, get the file trees - * to process from stdin; - */ - for (i = 0; i < PAXPATHLEN + 2;) { - c = getchar(); - if (c == EOF) - break; - else if (c == sep) { - if (i != 0) - break; - } else - farray[0][i++] = c; - } - if (i == 0) - return -1; - farray[0][i] = '\0'; - } else { - /* - * the user supplied the file args as arguments to pax - */ - if (ftcur == NULL) - ftcur = fthead; - else if ((ftcur = ftcur->fow) == NULL) - return -1; - - if (ftcur->refcnt < 0) { - /* - * chdir entry. - * Change directory and retry loop. - */ - if (ar_dochdir(ftcur->fname)) - return (-1); - continue; - } - farray[0] = ftcur->fname; - } - - /* - * watch it, fts wants the file arg stored in a array of char - * ptrs, with the last one a null. we use a two element array - * and set farray[0] to point at the buffer with the file name - * in it. We cannot pass all the file args to fts at one shot - * as we need to keep a handle on which file arg generates what - * files (the -n and -d flags need this). If the open is - * successful, return a 0. - */ - if ((ftsp = fts_open(farray, ftsopts, NULL)) != NULL) - break; - } - return 0; -} - -/* - * next_file() - * supplies the next file to process in the supplied archd structure. - * Return: - * 0 when contents of arcn have been set with the next file, -1 when done. - */ - -int -next_file(ARCHD *arcn) -{ -#ifndef SMALL - static char curdir[PAXPATHLEN+2], curpath[PAXPATHLEN+2]; - static int curdirlen; - - struct stat statbuf; - FTSENT Mftent; -#endif /* SMALL */ - int cnt; - time_t atime, mtime; - char *curlink; -#define MFTENT_DUMMY_DEV UINT_MAX - - curlink = NULL; -#ifndef SMALL - /* - * if parsing an mtree(8) specfile, build up `dummy' ftsent - * from specfile info, and jump below to complete setup of arcn. - */ - if (Mflag) { - int skipoptional; - - next_ftnode: - skipoptional = 0; - if (ftnode == NULL) /* tree is empty */ - return (-1); - - /* get current name */ - if (snprintf(curpath, sizeof(curpath), "%s%s%s", - curdir, curdirlen ? "/" : "", ftnode->name) - >= (int)sizeof(curpath)) { - tty_warn(1, "line %lu: %s: %s", (u_long)ftnode->lineno, - curdir, strerror(ENAMETOOLONG)); - return (-1); - } - ftnode->flags |= F_VISIT; /* mark node visited */ - - /* construct dummy FTSENT */ - Mftent.fts_path = curpath; - Mftent.fts_statp = &statbuf; - Mftent.fts_pointer = ftnode; - ftent = &Mftent; - /* look for existing file */ - if (lstat(Mftent.fts_path, &statbuf) == -1) { - if (ftnode->flags & F_OPT) - skipoptional = 1; - - /* missing: fake up stat info */ - memset(&statbuf, 0, sizeof(statbuf)); - statbuf.st_dev = MFTENT_DUMMY_DEV; - statbuf.st_ino = ftnode->lineno; - statbuf.st_size = 0; -#define NODETEST(t, m) \ - if (!(t)) { \ - tty_warn(1, "line %lu: %s: %s not specified", \ - (u_long)ftnode->lineno, \ - ftent->fts_path, m); \ - return -1; \ - } - statbuf.st_mode = nodetoino(ftnode->type); - NODETEST(ftnode->flags & F_TYPE, "type"); - NODETEST(ftnode->flags & F_MODE, "mode"); - if (!(ftnode->flags & F_TIME)) - statbuf.st_mtime = starttime; - NODETEST(ftnode->flags & (F_GID | F_GNAME), "group"); - NODETEST(ftnode->flags & (F_UID | F_UNAME), "user"); - if (ftnode->type == F_BLOCK || ftnode->type == F_CHAR) - NODETEST(ftnode->flags & F_DEV, - "device number"); - if (ftnode->type == F_LINK) - NODETEST(ftnode->flags & F_SLINK, "symlink"); - /* don't require F_FLAGS or F_SIZE */ -#undef NODETEST - } else { - if (ftnode->flags & F_TYPE && nodetoino(ftnode->type) - != (statbuf.st_mode & S_IFMT)) { - tty_warn(1, - "line %lu: %s: type mismatch: specfile %s, tree %s", - (u_long)ftnode->lineno, ftent->fts_path, - inotype(nodetoino(ftnode->type)), - inotype(statbuf.st_mode)); - return -1; - } - if (ftnode->type == F_DIR && (ftnode->flags & F_OPT)) - skipoptional = 1; - } - /* - * override settings with those from specfile - */ - if (ftnode->flags & F_MODE) { - statbuf.st_mode &= ~ALLPERMS; - statbuf.st_mode |= (ftnode->st_mode & ALLPERMS); - } - if (ftnode->flags & (F_GID | F_GNAME)) - statbuf.st_gid = ftnode->st_gid; - if (ftnode->flags & (F_UID | F_UNAME)) - statbuf.st_uid = ftnode->st_uid; -#if HAVE_STRUCT_STAT_ST_FLAGS - if (ftnode->flags & F_FLAGS) - statbuf.st_flags = ftnode->st_flags; -#endif - if (ftnode->flags & F_TIME) -#if BSD4_4 && !HAVE_NBTOOL_CONFIG_H - statbuf.st_mtimespec = ftnode->st_mtimespec; -#else - statbuf.st_mtime = ftnode->st_mtimespec.tv_sec; -#endif - if (ftnode->flags & F_DEV) - statbuf.st_rdev = ftnode->st_rdev; - if (ftnode->flags & F_SLINK) - curlink = ftnode->slink; - /* ignore F_SIZE */ - - /* - * find next node - */ - if (ftnode->type == F_DIR && ftnode->child != NULL) { - /* directory with unseen child */ - ftnode = ftnode->child; - curdirlen = strlcpy(curdir, curpath, sizeof(curdir)); - } else do { - if (ftnode->next != NULL) { - /* next node at current level */ - ftnode = ftnode->next; - } else { /* move back to parent */ - /* reset time only on first cd.. */ - if (Mftent.fts_pointer == ftnode && tflag && - (get_atdir(MFTENT_DUMMY_DEV, ftnode->lineno, - &mtime, &atime) == 0)) { - set_ftime(ftent->fts_path, - mtime, atime, 1, 0); - } - ftnode = ftnode->parent; - if (ftnode->parent == ftnode) - ftnode = NULL; - else { - curdirlen -= strlen(ftnode->name) + 1; - curdir[curdirlen] = '\0'; - } - } - } while (ftnode != NULL && ftnode->flags & F_VISIT); - if (skipoptional) /* skip optional entries */ - goto next_ftnode; - goto got_ftent; - } -#endif /* SMALL */ - - /* - * ftree_sel() might have set the ftree_skip flag if the user has the - * -n option and a file was selected from this file arg tree. (-n says - * only one member is matched for each pattern) ftree_skip being 1 - * forces us to go to the next arg now. - */ - if (ftree_skip) { - /* - * clear and go to next arg - */ - ftree_skip = 0; - if (ftree_arg() < 0) - return -1; - } - - if (ftsp == NULL) - return -1; - /* - * loop until we get a valid file to process - */ - for(;;) { - if ((ftent = fts_read(ftsp)) == NULL) { - /* - * out of files in this tree, go to next arg, if none - * we are done - */ - if (ftree_arg() < 0) - return -1; - continue; - } - - /* - * handle each type of fts_read() flag - */ - switch(ftent->fts_info) { - case FTS_D: - case FTS_DEFAULT: - case FTS_F: - case FTS_SL: - case FTS_SLNONE: - /* - * these are all ok - */ - break; - case FTS_DP: - /* - * already saw this directory. If the user wants file - * access times reset, we use this to restore the - * access time for this directory since this is the - * last time we will see it in this file subtree - * remember to force the time (this is -t on a read - * directory, not a created directory). - */ - if (!tflag || (get_atdir( - ftent->fts_statp->st_dev, ftent->fts_statp->st_ino, - &mtime, &atime) < 0)) - continue; - set_ftime(ftent->fts_path, mtime, atime, 1, 0); - continue; - case FTS_DC: - /* - * fts claims a file system cycle - */ - tty_warn(1,"File system cycle found at %s", - ftent->fts_path); - continue; - case FTS_DNR: - syswarn(1, FTS_ERRNO(ftent), - "Unable to read directory %s", ftent->fts_path); - continue; - case FTS_ERR: - syswarn(1, FTS_ERRNO(ftent), - "File system traversal error"); - continue; - case FTS_NS: - case FTS_NSOK: - syswarn(1, FTS_ERRNO(ftent), - "Unable to access %s", ftent->fts_path); - continue; - } - -#ifndef SMALL - got_ftent: -#endif /* SMALL */ - /* - * ok got a file tree node to process. copy info into arcn - * structure (initialize as required) - */ - arcn->skip = 0; - arcn->pad = 0; - arcn->ln_nlen = 0; - arcn->ln_name[0] = '\0'; - arcn->sb = *(ftent->fts_statp); - - /* - * file type based set up and copy into the arcn struct - * SIDE NOTE: - * we try to reset the access time on all files and directories - * we may read when the -t flag is specified. files are reset - * when we close them after copying. we reset the directories - * when we are done with their file tree (we also clean up at - * end in case we cut short a file tree traversal). However - * there is no way to reset access times on symlinks. - */ - switch(S_IFMT & arcn->sb.st_mode) { - case S_IFDIR: - arcn->type = PAX_DIR; - if (!tflag) - break; - add_atdir(ftent->fts_path, arcn->sb.st_dev, - arcn->sb.st_ino, arcn->sb.st_mtime, - arcn->sb.st_atime); - break; - case S_IFCHR: - arcn->type = PAX_CHR; - break; - case S_IFBLK: - arcn->type = PAX_BLK; - break; - case S_IFREG: - /* - * only regular files with have data to store on the - * archive. all others will store a zero length skip. - * the skip field is used by pax for actual data it has - * to read (or skip over). - */ - arcn->type = PAX_REG; - arcn->skip = arcn->sb.st_size; - break; - case S_IFLNK: - arcn->type = PAX_SLK; - if (curlink != NULL) { - cnt = strlcpy(arcn->ln_name, curlink, - sizeof(arcn->ln_name)); - /* - * have to read the symlink path from the file - */ - } else if ((cnt = - readlink(ftent->fts_path, arcn->ln_name, - sizeof(arcn->ln_name) - 1)) < 0) { - syswarn(1, errno, "Unable to read symlink %s", - ftent->fts_path); - continue; - } - /* - * set link name length, watch out readlink does not - * always null terminate the link path - */ - arcn->ln_name[cnt] = '\0'; - arcn->ln_nlen = cnt; - break; -#ifdef S_IFSOCK - case S_IFSOCK: - /* - * under BSD storing a socket is senseless but we will - * let the format specific write function make the - * decision of what to do with it. - */ - arcn->type = PAX_SCK; - break; -#endif - case S_IFIFO: - arcn->type = PAX_FIF; - break; - } - break; - } - - /* - * copy file name, set file name length - */ - arcn->nlen = strlcpy(arcn->name, ftent->fts_path, sizeof(arcn->name)); - arcn->org_name = arcn->fts_name; - strlcpy(arcn->fts_name, ftent->fts_path, sizeof arcn->fts_name); - if (strcmp(NM_CPIO, argv0) == 0) { - /* - * cpio does *not* descend directories listed in the - * arguments, unlike pax/tar, so needs special handling - * here. failure to do so results in massive amounts - * of duplicated files in the output. We kill fts after - * the first name is extracted, what a waste. - */ - ftcur->refcnt = 1; - (void)ftree_arg(); - } - return 0; -} |