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1.1 misho 1: /*
2: * Generate and receive file lists.
3: *
4: * Copyright (C) 1996 Andrew Tridgell
5: * Copyright (C) 1996 Paul Mackerras
6: * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7: * Copyright (C) 2002-2009 Wayne Davison
8: *
9: * This program is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 3 of the License, or
12: * (at your option) any later version.
13: *
14: * This program is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: * GNU General Public License for more details.
18: *
19: * You should have received a copy of the GNU General Public License along
20: * with this program; if not, visit the http://fsf.org website.
21: */
22:
23: #include "rsync.h"
24: #include "ifuncs.h"
25: #include "rounding.h"
26: #include "io.h"
27:
28: extern int verbose;
29: extern int am_root;
30: extern int am_server;
31: extern int am_daemon;
32: extern int am_sender;
33: extern int am_generator;
34: extern int inc_recurse;
35: extern int do_progress;
36: extern int always_checksum;
37: extern int module_id;
38: extern int ignore_errors;
39: extern int numeric_ids;
40: extern int recurse;
41: extern int use_qsort;
42: extern int xfer_dirs;
43: extern int filesfrom_fd;
44: extern int one_file_system;
45: extern int copy_dirlinks;
46: extern int preserve_uid;
47: extern int preserve_gid;
48: extern int preserve_acls;
49: extern int preserve_xattrs;
50: extern int preserve_links;
51: extern int preserve_hard_links;
52: extern int preserve_devices;
53: extern int preserve_specials;
54: extern int delete_during;
55: extern int eol_nulls;
56: extern int relative_paths;
57: extern int implied_dirs;
58: extern int ignore_perishable;
59: extern int non_perishable_cnt;
60: extern int prune_empty_dirs;
61: extern int copy_links;
62: extern int copy_unsafe_links;
63: extern int protocol_version;
64: extern int sanitize_paths;
65: extern int munge_symlinks;
66: extern int use_safe_inc_flist;
67: extern int need_unsorted_flist;
68: extern int sender_symlink_iconv;
69: extern int unsort_ndx;
70: extern uid_t our_uid;
71: extern struct stats stats;
72: extern char *filesfrom_host;
73:
74: extern char curr_dir[MAXPATHLEN];
75:
76: extern struct chmod_mode_struct *chmod_modes;
77:
78: extern struct filter_list_struct filter_list;
79: extern struct filter_list_struct daemon_filter_list;
80:
81: #ifdef ICONV_OPTION
82: extern int filesfrom_convert;
83: extern iconv_t ic_send, ic_recv;
84: #endif
85:
86: #define PTR_SIZE (sizeof (struct file_struct *))
87:
88: int io_error;
89: int checksum_len;
90: dev_t filesystem_dev; /* used to implement -x */
91:
92: struct file_list *cur_flist, *first_flist, *dir_flist;
93: int send_dir_ndx = -1, send_dir_depth = -1;
94: int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
95: int file_total = 0; /* total of all active items over all file-lists */
96: int flist_eof = 0; /* all the file-lists are now known */
97:
98: #define NORMAL_NAME 0
99: #define SLASH_ENDING_NAME 1
100: #define DOTDIR_NAME 2
101:
102: /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
103: * internally, even if this platform does not allow files to have 64-bit inums.
104: * The only exception is if we're on a platform with no 64-bit type at all.
105: *
106: * Because we use read_longint() to get these off the wire, if you transfer
107: * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
108: * machine with no 64-bit types then you will get an overflow error.
109: *
110: * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
111: * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
112: * be truncated. But it's a kind of silly thing to do anyhow. */
113:
114: /* The tmp_* vars are used as a cache area by make_file() to store data
115: * that the sender doesn't need to remember in its file list. The data
116: * will survive just long enough to be used by send_file_entry(). */
117: static dev_t tmp_rdev;
118: #ifdef SUPPORT_HARD_LINKS
119: static int64 tmp_dev = -1, tmp_ino;
120: #endif
121: static char tmp_sum[MAX_DIGEST_LEN];
122:
123: static char empty_sum[MAX_DIGEST_LEN];
124: static int flist_count_offset; /* for --delete --progress */
125: static int dir_count = 0;
126:
127: static void flist_sort_and_clean(struct file_list *flist, int strip_root);
128: static void output_flist(struct file_list *flist);
129:
130: void init_flist(void)
131: {
132: if (verbose > 4) {
133: rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
134: (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
135: }
136: checksum_len = protocol_version < 21 ? 2
137: : protocol_version < 30 ? MD4_DIGEST_LEN
138: : MD5_DIGEST_LEN;
139: }
140:
141: static int show_filelist_p(void)
142: {
143: return verbose && xfer_dirs && !am_server && !inc_recurse;
144: }
145:
146: static void start_filelist_progress(char *kind)
147: {
148: rprintf(FCLIENT, "%s ... ", kind);
149: if (verbose > 1 || do_progress)
150: rprintf(FCLIENT, "\n");
151: rflush(FINFO);
152: }
153:
154: static void emit_filelist_progress(int count)
155: {
156: rprintf(FCLIENT, " %d files...\r", count);
157: }
158:
159: static void maybe_emit_filelist_progress(int count)
160: {
161: if (do_progress && show_filelist_p() && (count % 100) == 0)
162: emit_filelist_progress(count);
163: }
164:
165: static void finish_filelist_progress(const struct file_list *flist)
166: {
167: if (do_progress) {
168: /* This overwrites the progress line */
169: rprintf(FINFO, "%d file%sto consider\n",
170: flist->used, flist->used == 1 ? " " : "s ");
171: } else
172: rprintf(FINFO, "done\n");
173: }
174:
175: void show_flist_stats(void)
176: {
177: /* Nothing yet */
178: }
179:
180: /* Stat either a symlink or its referent, depending on the settings of
181: * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
182: *
183: * If path is the name of a symlink, then the linkbuf buffer (which must hold
184: * MAXPATHLEN chars) will be set to the symlink's target string.
185: *
186: * The stat structure pointed to by stp will contain information about the
187: * link or the referent as appropriate, if they exist. */
188: static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
189: {
190: #ifdef SUPPORT_LINKS
191: if (link_stat(path, stp, copy_dirlinks) < 0)
192: return -1;
193: if (S_ISLNK(stp->st_mode)) {
194: int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
195: if (llen < 0)
196: return -1;
197: linkbuf[llen] = '\0';
198: if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
199: if (verbose > 1) {
200: rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
201: path, linkbuf);
202: }
203: return x_stat(path, stp, NULL);
204: }
205: if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
206: && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
207: memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
208: llen - SYMLINK_PREFIX_LEN + 1);
209: }
210: }
211: return 0;
212: #else
213: return x_stat(path, stp, NULL);
214: #endif
215: }
216:
217: int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
218: {
219: #ifdef SUPPORT_LINKS
220: if (copy_links)
221: return x_stat(path, stp, NULL);
222: if (x_lstat(path, stp, NULL) < 0)
223: return -1;
224: if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
225: STRUCT_STAT st;
226: if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
227: *stp = st;
228: }
229: return 0;
230: #else
231: return x_stat(path, stp, NULL);
232: #endif
233: }
234:
235: static inline int is_daemon_excluded(const char *fname, int is_dir)
236: {
237: if (daemon_filter_list.head
238: && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
239: errno = ENOENT;
240: return 1;
241: }
242: return 0;
243: }
244:
245: static inline int path_is_daemon_excluded(char *path, int ignore_filename)
246: {
247: if (daemon_filter_list.head) {
248: char *slash = path;
249:
250: while ((slash = strchr(slash+1, '/')) != NULL) {
251: int ret;
252: *slash = '\0';
253: ret = check_filter(&daemon_filter_list, FLOG, path, 1);
254: *slash = '/';
255: if (ret < 0) {
256: errno = ENOENT;
257: return 1;
258: }
259: }
260:
261: if (!ignore_filename
262: && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
263: errno = ENOENT;
264: return 1;
265: }
266: }
267:
268: return 0;
269: }
270:
271: /* This function is used to check if a file should be included/excluded
272: * from the list of files based on its name and type etc. The value of
273: * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
274: static int is_excluded(const char *fname, int is_dir, int filter_level)
275: {
276: #if 0 /* This currently never happens, so avoid a useless compare. */
277: if (filter_level == NO_FILTERS)
278: return 0;
279: #endif
280: if (is_daemon_excluded(fname, is_dir))
281: return 1;
282: if (filter_level != ALL_FILTERS)
283: return 0;
284: if (filter_list.head
285: && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
286: return 1;
287: return 0;
288: }
289:
290: static void send_directory(int f, struct file_list *flist,
291: char *fbuf, int len, int flags);
292:
293: static const char *pathname, *orig_dir;
294: static int pathname_len;
295:
296: /* Make sure flist can hold at least flist->used + extra entries. */
297: static void flist_expand(struct file_list *flist, int extra)
298: {
299: struct file_struct **new_ptr;
300:
301: if (flist->used + extra <= flist->malloced)
302: return;
303:
304: if (flist->malloced < FLIST_START)
305: flist->malloced = FLIST_START;
306: else if (flist->malloced >= FLIST_LINEAR)
307: flist->malloced += FLIST_LINEAR;
308: else
309: flist->malloced *= 2;
310:
311: /* In case count jumped or we are starting the list
312: * with a known size just set it. */
313: if (flist->malloced < flist->used + extra)
314: flist->malloced = flist->used + extra;
315:
316: new_ptr = realloc_array(flist->files, struct file_struct *,
317: flist->malloced);
318:
319: if (verbose >= 2 && flist->malloced != FLIST_START) {
320: rprintf(FCLIENT, "[%s] expand file_list pointer array to %.0f bytes, did%s move\n",
321: who_am_i(),
322: (double)sizeof flist->files[0] * flist->malloced,
323: (new_ptr == flist->files) ? " not" : "");
324: }
325:
326: flist->files = new_ptr;
327:
328: if (!flist->files)
329: out_of_memory("flist_expand");
330: }
331:
332: static void flist_done_allocating(struct file_list *flist)
333: {
334: void *ptr = pool_boundary(flist->file_pool, 8*1024);
335: if (flist->pool_boundary == ptr)
336: flist->pool_boundary = NULL; /* list didn't use any pool memory */
337: else
338: flist->pool_boundary = ptr;
339: }
340:
341: /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
342: * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
343: * with dir == NULL taken to be the starting directory, and dirlen < 0
344: * indicating that strdup(dir) should be called and then the -dirlen length
345: * value checked to ensure that it is not daemon-excluded. */
346: int change_pathname(struct file_struct *file, const char *dir, int dirlen)
347: {
348: if (dirlen < 0) {
349: char *cpy = strdup(dir);
350: if (*cpy != '/')
351: change_dir(orig_dir, CD_SKIP_CHDIR);
352: if (path_is_daemon_excluded(cpy, 0))
353: goto chdir_error;
354: dir = cpy;
355: dirlen = -dirlen;
356: } else {
357: if (file) {
358: if (pathname == F_PATHNAME(file))
359: return 1;
360: dir = F_PATHNAME(file);
361: if (dir)
362: dirlen = strlen(dir);
363: } else if (pathname == dir)
364: return 1;
365: if (dir && *dir != '/')
366: change_dir(orig_dir, CD_SKIP_CHDIR);
367: }
368:
369: pathname = dir;
370: pathname_len = dirlen;
371:
372: if (!dir)
373: dir = orig_dir;
374:
375: if (!change_dir(dir, CD_NORMAL)) {
376: chdir_error:
377: io_error |= IOERR_GENERAL;
378: rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
379: if (dir != orig_dir)
380: change_dir(orig_dir, CD_NORMAL);
381: pathname = NULL;
382: pathname_len = 0;
383: return 0;
384: }
385:
386: return 1;
387: }
388:
389: static void send_file_entry(int f, const char *fname, struct file_struct *file,
390: #ifdef SUPPORT_LINKS
391: const char *symlink_name, int symlink_len,
392: #endif
393: int ndx, int first_ndx)
394: {
395: static time_t modtime;
396: static mode_t mode;
397: #ifdef SUPPORT_HARD_LINKS
398: static int64 dev;
399: #endif
400: static dev_t rdev;
401: static uint32 rdev_major;
402: static uid_t uid;
403: static gid_t gid;
404: static const char *user_name, *group_name;
405: static char lastname[MAXPATHLEN];
406: int first_hlink_ndx = -1;
407: int l1, l2;
408: int xflags;
409:
410: /* Initialize starting value of xflags. */
411: if (protocol_version >= 30 && S_ISDIR(file->mode)) {
412: dir_count++;
413: if (file->flags & FLAG_CONTENT_DIR)
414: xflags = file->flags & FLAG_TOP_DIR;
415: else if (file->flags & FLAG_IMPLIED_DIR)
416: xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
417: else
418: xflags = XMIT_NO_CONTENT_DIR;
419: } else
420: xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
421:
422: if (file->mode == mode)
423: xflags |= XMIT_SAME_MODE;
424: else
425: mode = file->mode;
426:
427: if (preserve_devices && IS_DEVICE(mode)) {
428: if (protocol_version < 28) {
429: if (tmp_rdev == rdev)
430: xflags |= XMIT_SAME_RDEV_pre28;
431: else
432: rdev = tmp_rdev;
433: } else {
434: rdev = tmp_rdev;
435: if ((uint32)major(rdev) == rdev_major)
436: xflags |= XMIT_SAME_RDEV_MAJOR;
437: else
438: rdev_major = major(rdev);
439: if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
440: xflags |= XMIT_RDEV_MINOR_8_pre30;
441: }
442: } else if (preserve_specials && IS_SPECIAL(mode)) {
443: /* Special files don't need an rdev number, so just make
444: * the historical transmission of the value efficient. */
445: if (protocol_version < 28)
446: xflags |= XMIT_SAME_RDEV_pre28;
447: else {
448: rdev = MAKEDEV(major(rdev), 0);
449: xflags |= XMIT_SAME_RDEV_MAJOR;
450: if (protocol_version < 30)
451: xflags |= XMIT_RDEV_MINOR_8_pre30;
452: }
453: } else if (protocol_version < 28)
454: rdev = MAKEDEV(0, 0);
455: if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
456: xflags |= XMIT_SAME_UID;
457: else {
458: uid = F_OWNER(file);
459: if (!numeric_ids) {
460: user_name = add_uid(uid);
461: if (inc_recurse && user_name)
462: xflags |= XMIT_USER_NAME_FOLLOWS;
463: }
464: }
465: if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
466: xflags |= XMIT_SAME_GID;
467: else {
468: gid = F_GROUP(file);
469: if (!numeric_ids) {
470: group_name = add_gid(gid);
471: if (inc_recurse && group_name)
472: xflags |= XMIT_GROUP_NAME_FOLLOWS;
473: }
474: }
475: if (file->modtime == modtime)
476: xflags |= XMIT_SAME_TIME;
477: else
478: modtime = file->modtime;
479:
480: #ifdef SUPPORT_HARD_LINKS
481: if (tmp_dev != -1) {
482: if (protocol_version >= 30) {
483: struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
484: first_hlink_ndx = (int32)(long)np->data - 1;
485: if (first_hlink_ndx < 0) {
486: np->data = (void*)(long)(first_ndx + ndx + 1);
487: xflags |= XMIT_HLINK_FIRST;
488: }
489: } else {
490: if (tmp_dev == dev) {
491: if (protocol_version >= 28)
492: xflags |= XMIT_SAME_DEV_pre30;
493: } else
494: dev = tmp_dev;
495: }
496: xflags |= XMIT_HLINKED;
497: }
498: #endif
499:
500: for (l1 = 0;
501: lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
502: l1++) {}
503: l2 = strlen(fname+l1);
504:
505: if (l1 > 0)
506: xflags |= XMIT_SAME_NAME;
507: if (l2 > 255)
508: xflags |= XMIT_LONG_NAME;
509:
510: /* We must make sure we don't send a zero flag byte or the
511: * other end will terminate the flist transfer. Note that
512: * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
513: * it's harmless way to add a bit to the first flag byte. */
514: if (protocol_version >= 28) {
515: if (!xflags && !S_ISDIR(mode))
516: xflags |= XMIT_TOP_DIR;
517: if ((xflags & 0xFF00) || !xflags) {
518: xflags |= XMIT_EXTENDED_FLAGS;
519: write_shortint(f, xflags);
520: } else
521: write_byte(f, xflags);
522: } else {
523: if (!(xflags & 0xFF))
524: xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
525: write_byte(f, xflags);
526: }
527: if (xflags & XMIT_SAME_NAME)
528: write_byte(f, l1);
529: if (xflags & XMIT_LONG_NAME)
530: write_varint30(f, l2);
531: else
532: write_byte(f, l2);
533: write_buf(f, fname + l1, l2);
534:
535: if (first_hlink_ndx >= 0) {
536: write_varint(f, first_hlink_ndx);
537: if (first_hlink_ndx >= first_ndx)
538: goto the_end;
539: }
540:
541: write_varlong30(f, F_LENGTH(file), 3);
542: if (!(xflags & XMIT_SAME_TIME)) {
543: if (protocol_version >= 30)
544: write_varlong(f, modtime, 4);
545: else
546: write_int(f, modtime);
547: }
548: if (!(xflags & XMIT_SAME_MODE))
549: write_int(f, to_wire_mode(mode));
550: if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
551: if (protocol_version < 30)
552: write_int(f, uid);
553: else {
554: write_varint(f, uid);
555: if (xflags & XMIT_USER_NAME_FOLLOWS) {
556: int len = strlen(user_name);
557: write_byte(f, len);
558: write_buf(f, user_name, len);
559: }
560: }
561: }
562: if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
563: if (protocol_version < 30)
564: write_int(f, gid);
565: else {
566: write_varint(f, gid);
567: if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
568: int len = strlen(group_name);
569: write_byte(f, len);
570: write_buf(f, group_name, len);
571: }
572: }
573: }
574: if ((preserve_devices && IS_DEVICE(mode))
575: || (preserve_specials && IS_SPECIAL(mode))) {
576: if (protocol_version < 28) {
577: if (!(xflags & XMIT_SAME_RDEV_pre28))
578: write_int(f, (int)rdev);
579: } else {
580: if (!(xflags & XMIT_SAME_RDEV_MAJOR))
581: write_varint30(f, major(rdev));
582: if (protocol_version >= 30)
583: write_varint(f, minor(rdev));
584: else if (xflags & XMIT_RDEV_MINOR_8_pre30)
585: write_byte(f, minor(rdev));
586: else
587: write_int(f, minor(rdev));
588: }
589: }
590:
591: #ifdef SUPPORT_LINKS
592: if (symlink_len) {
593: write_varint30(f, symlink_len);
594: write_buf(f, symlink_name, symlink_len);
595: }
596: #endif
597:
598: #ifdef SUPPORT_HARD_LINKS
599: if (tmp_dev != -1 && protocol_version < 30) {
600: /* Older protocols expect the dev number to be transmitted
601: * 1-incremented so that it is never zero. */
602: if (protocol_version < 26) {
603: /* 32-bit dev_t and ino_t */
604: write_int(f, (int32)(dev+1));
605: write_int(f, (int32)tmp_ino);
606: } else {
607: /* 64-bit dev_t and ino_t */
608: if (!(xflags & XMIT_SAME_DEV_pre30))
609: write_longint(f, dev+1);
610: write_longint(f, tmp_ino);
611: }
612: }
613: #endif
614:
615: if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
616: const char *sum;
617: if (S_ISREG(mode))
618: sum = tmp_sum;
619: else {
620: /* Prior to 28, we sent a useless set of nulls. */
621: sum = empty_sum;
622: }
623: write_buf(f, sum, checksum_len);
624: }
625:
626: the_end:
627: strlcpy(lastname, fname, MAXPATHLEN);
628:
629: if (S_ISREG(mode) || S_ISLNK(mode))
630: stats.total_size += F_LENGTH(file);
631: }
632:
633: static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
634: {
635: static int64 modtime;
636: static mode_t mode;
637: #ifdef SUPPORT_HARD_LINKS
638: static int64 dev;
639: #endif
640: static dev_t rdev;
641: static uint32 rdev_major;
642: static uid_t uid;
643: static gid_t gid;
644: static uint16 gid_flags;
645: static char lastname[MAXPATHLEN], *lastdir;
646: static int lastdir_depth, lastdir_len = -1;
647: static unsigned int del_hier_name_len = 0;
648: static int in_del_hier = 0;
649: char thisname[MAXPATHLEN];
650: unsigned int l1 = 0, l2 = 0;
651: int alloc_len, basename_len, linkname_len;
652: int extra_len = file_extra_cnt * EXTRA_LEN;
653: int first_hlink_ndx = -1;
654: int64 file_length;
655: const char *basename;
656: struct file_struct *file;
657: alloc_pool_t *pool;
658: char *bp;
659:
660: if (xflags & XMIT_SAME_NAME)
661: l1 = read_byte(f);
662:
663: if (xflags & XMIT_LONG_NAME)
664: l2 = read_varint30(f);
665: else
666: l2 = read_byte(f);
667:
668: if (l2 >= MAXPATHLEN - l1) {
669: rprintf(FERROR,
670: "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
671: xflags, l1, l2, lastname, who_am_i());
672: overflow_exit("recv_file_entry");
673: }
674:
675: strlcpy(thisname, lastname, l1 + 1);
676: read_sbuf(f, &thisname[l1], l2);
677: thisname[l1 + l2] = 0;
678:
679: /* Abuse basename_len for a moment... */
680: basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
681:
682: #ifdef ICONV_OPTION
683: if (ic_recv != (iconv_t)-1) {
684: xbuf outbuf, inbuf;
685:
686: INIT_CONST_XBUF(outbuf, thisname);
687: INIT_XBUF(inbuf, lastname, basename_len, -1);
688:
689: if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
690: io_error |= IOERR_GENERAL;
691: rprintf(FERROR_UTF8,
692: "[%s] cannot convert filename: %s (%s)\n",
693: who_am_i(), lastname, strerror(errno));
694: outbuf.len = 0;
695: }
696: thisname[outbuf.len] = '\0';
697: }
698: #endif
699:
700: if (*thisname)
701: clean_fname(thisname, 0);
702:
703: if (sanitize_paths)
704: sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
705:
706: if ((basename = strrchr(thisname, '/')) != NULL) {
707: int len = basename++ - thisname;
708: if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
709: lastdir = new_array(char, len + 1);
710: memcpy(lastdir, thisname, len);
711: lastdir[len] = '\0';
712: lastdir_len = len;
713: lastdir_depth = count_dir_elements(lastdir);
714: }
715: } else
716: basename = thisname;
717: basename_len = strlen(basename) + 1; /* count the '\0' */
718:
719: #ifdef SUPPORT_HARD_LINKS
720: if (protocol_version >= 30
721: && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
722: first_hlink_ndx = read_varint(f);
723: if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
724: rprintf(FERROR,
725: "hard-link reference out of range: %d (%d)\n",
726: first_hlink_ndx, flist->ndx_start + flist->used);
727: exit_cleanup(RERR_PROTOCOL);
728: }
729: if (first_hlink_ndx >= flist->ndx_start) {
730: struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
731: file_length = F_LENGTH(first);
732: modtime = first->modtime;
733: mode = first->mode;
734: if (preserve_uid)
735: uid = F_OWNER(first);
736: if (preserve_gid)
737: gid = F_GROUP(first);
738: if (preserve_devices && IS_DEVICE(mode)) {
739: uint32 *devp = F_RDEV_P(first);
740: rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
741: extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
742: }
743: if (preserve_links && S_ISLNK(mode))
744: linkname_len = strlen(F_SYMLINK(first)) + 1;
745: else
746: linkname_len = 0;
747: goto create_object;
748: }
749: }
750: #endif
751:
752: file_length = read_varlong30(f, 3);
753: if (!(xflags & XMIT_SAME_TIME)) {
754: if (protocol_version >= 30) {
755: modtime = read_varlong(f, 4);
756: #if SIZEOF_TIME_T < SIZEOF_INT64
757: if (!am_generator && (int64)(time_t)modtime != modtime) {
758: rprintf(FERROR_XFER,
759: "Time value of %s truncated on receiver.\n",
760: lastname);
761: }
762: #endif
763: } else
764: modtime = read_int(f);
765: }
766: if (!(xflags & XMIT_SAME_MODE))
767: mode = from_wire_mode(read_int(f));
768:
769: if (chmod_modes && !S_ISLNK(mode))
770: mode = tweak_mode(mode, chmod_modes);
771:
772: if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
773: if (protocol_version < 30)
774: uid = (uid_t)read_int(f);
775: else {
776: uid = (uid_t)read_varint(f);
777: if (xflags & XMIT_USER_NAME_FOLLOWS)
778: uid = recv_user_name(f, uid);
779: else if (inc_recurse && am_root && !numeric_ids)
780: uid = match_uid(uid);
781: }
782: }
783: if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
784: if (protocol_version < 30)
785: gid = (gid_t)read_int(f);
786: else {
787: gid = (gid_t)read_varint(f);
788: gid_flags = 0;
789: if (xflags & XMIT_GROUP_NAME_FOLLOWS)
790: gid = recv_group_name(f, gid, &gid_flags);
791: else if (inc_recurse && (!am_root || !numeric_ids))
792: gid = match_gid(gid, &gid_flags);
793: }
794: }
795:
796: if ((preserve_devices && IS_DEVICE(mode))
797: || (preserve_specials && IS_SPECIAL(mode))) {
798: if (protocol_version < 28) {
799: if (!(xflags & XMIT_SAME_RDEV_pre28))
800: rdev = (dev_t)read_int(f);
801: } else {
802: uint32 rdev_minor;
803: if (!(xflags & XMIT_SAME_RDEV_MAJOR))
804: rdev_major = read_varint30(f);
805: if (protocol_version >= 30)
806: rdev_minor = read_varint(f);
807: else if (xflags & XMIT_RDEV_MINOR_8_pre30)
808: rdev_minor = read_byte(f);
809: else
810: rdev_minor = read_int(f);
811: rdev = MAKEDEV(rdev_major, rdev_minor);
812: }
813: if (IS_DEVICE(mode))
814: extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
815: file_length = 0;
816: } else if (protocol_version < 28)
817: rdev = MAKEDEV(0, 0);
818:
819: #ifdef SUPPORT_LINKS
820: if (preserve_links && S_ISLNK(mode)) {
821: linkname_len = read_varint30(f) + 1; /* count the '\0' */
822: if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
823: rprintf(FERROR, "overflow: linkname_len=%d\n",
824: linkname_len - 1);
825: overflow_exit("recv_file_entry");
826: }
827: #ifdef ICONV_OPTION
828: /* We don't know how much extra room we need to convert
829: * the as-yet-unread symlink data, so let's hope that a
830: * double-size buffer is plenty. */
831: if (sender_symlink_iconv)
832: linkname_len *= 2;
833: #endif
834: if (munge_symlinks)
835: linkname_len += SYMLINK_PREFIX_LEN;
836: }
837: else
838: #endif
839: linkname_len = 0;
840:
841: #ifdef SUPPORT_HARD_LINKS
842: create_object:
843: if (preserve_hard_links) {
844: if (protocol_version < 28 && S_ISREG(mode))
845: xflags |= XMIT_HLINKED;
846: if (xflags & XMIT_HLINKED)
847: extra_len += (inc_recurse+1) * EXTRA_LEN;
848: }
849: #endif
850:
851: #ifdef SUPPORT_ACLS
852: /* Directories need an extra int32 for the default ACL. */
853: if (preserve_acls && S_ISDIR(mode))
854: extra_len += EXTRA_LEN;
855: #endif
856:
857: if (always_checksum && S_ISREG(mode))
858: extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
859:
860: #if SIZEOF_INT64 >= 8
861: if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
862: extra_len += EXTRA_LEN;
863: #endif
864: if (file_length < 0) {
865: rprintf(FERROR, "Offset underflow: file-length is negative\n");
866: exit_cleanup(RERR_UNSUPPORTED);
867: }
868:
869: if (inc_recurse && S_ISDIR(mode)) {
870: if (one_file_system) {
871: /* Room to save the dir's device for -x */
872: extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
873: }
874: pool = dir_flist->file_pool;
875: } else
876: pool = flist->file_pool;
877:
878: #if EXTRA_ROUNDING > 0
879: if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
880: extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
881: #endif
882:
883: alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
884: + linkname_len;
885: bp = pool_alloc(pool, alloc_len, "recv_file_entry");
886:
887: memset(bp, 0, extra_len + FILE_STRUCT_LEN);
888: bp += extra_len;
889: file = (struct file_struct *)bp;
890: bp += FILE_STRUCT_LEN;
891:
892: memcpy(bp, basename, basename_len);
893:
894: #ifdef SUPPORT_HARD_LINKS
895: if (xflags & XMIT_HLINKED)
896: file->flags |= FLAG_HLINKED;
897: #endif
898: file->modtime = (time_t)modtime;
899: file->len32 = (uint32)file_length;
900: #if SIZEOF_INT64 >= 8
901: if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
902: #if SIZEOF_CAPITAL_OFF_T < 8
903: rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
904: exit_cleanup(RERR_UNSUPPORTED);
905: #else
906: file->flags |= FLAG_LENGTH64;
907: OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
908: #endif
909: }
910: #endif
911: file->mode = mode;
912: if (preserve_uid)
913: F_OWNER(file) = uid;
914: if (preserve_gid) {
915: F_GROUP(file) = gid;
916: file->flags |= gid_flags;
917: }
918: if (unsort_ndx)
919: F_NDX(file) = flist->used + flist->ndx_start;
920:
921: if (basename != thisname) {
922: file->dirname = lastdir;
923: F_DEPTH(file) = lastdir_depth + 1;
924: } else
925: F_DEPTH(file) = 1;
926:
927: if (S_ISDIR(mode)) {
928: if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
929: F_DEPTH(file)--;
930: if (protocol_version >= 30) {
931: if (!(xflags & XMIT_NO_CONTENT_DIR)) {
932: if (xflags & XMIT_TOP_DIR)
933: file->flags |= FLAG_TOP_DIR;
934: file->flags |= FLAG_CONTENT_DIR;
935: } else if (xflags & XMIT_TOP_DIR)
936: file->flags |= FLAG_IMPLIED_DIR;
937: } else if (xflags & XMIT_TOP_DIR) {
938: in_del_hier = recurse;
939: del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
940: if (relative_paths && del_hier_name_len > 2
941: && lastname[del_hier_name_len-1] == '.'
942: && lastname[del_hier_name_len-2] == '/')
943: del_hier_name_len -= 2;
944: file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
945: } else if (in_del_hier) {
946: if (!relative_paths || !del_hier_name_len
947: || (l1 >= del_hier_name_len
948: && lastname[del_hier_name_len] == '/'))
949: file->flags |= FLAG_CONTENT_DIR;
950: else
951: in_del_hier = 0;
952: }
953: }
954:
955: if (preserve_devices && IS_DEVICE(mode)) {
956: uint32 *devp = F_RDEV_P(file);
957: DEV_MAJOR(devp) = major(rdev);
958: DEV_MINOR(devp) = minor(rdev);
959: }
960:
961: #ifdef SUPPORT_LINKS
962: if (linkname_len) {
963: bp += basename_len;
964: if (first_hlink_ndx >= flist->ndx_start) {
965: struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
966: memcpy(bp, F_SYMLINK(first), linkname_len);
967: } else {
968: if (munge_symlinks) {
969: strlcpy(bp, SYMLINK_PREFIX, linkname_len);
970: bp += SYMLINK_PREFIX_LEN;
971: linkname_len -= SYMLINK_PREFIX_LEN;
972: }
973: #ifdef ICONV_OPTION
974: if (sender_symlink_iconv) {
975: xbuf outbuf, inbuf;
976:
977: alloc_len = linkname_len;
978: linkname_len /= 2;
979:
980: /* Read the symlink data into the end of our double-sized
981: * buffer and then convert it into the right spot. */
982: INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
983: linkname_len - 1, (size_t)-1);
984: read_sbuf(f, inbuf.buf, inbuf.len);
985: INIT_XBUF(outbuf, bp, 0, alloc_len);
986:
987: if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
988: io_error |= IOERR_GENERAL;
989: rprintf(FERROR_XFER,
990: "[%s] cannot convert symlink data for: %s (%s)\n",
991: who_am_i(), full_fname(thisname), strerror(errno));
992: bp = (char*)file->basename;
993: *bp++ = '\0';
994: outbuf.len = 0;
995: }
996: bp[outbuf.len] = '\0';
997: } else
998: #endif
999: read_sbuf(f, bp, linkname_len - 1);
1000: if (sanitize_paths && !munge_symlinks && *bp)
1001: sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1002: }
1003: }
1004: #endif
1005:
1006: #ifdef SUPPORT_HARD_LINKS
1007: if (preserve_hard_links && xflags & XMIT_HLINKED) {
1008: if (protocol_version >= 30) {
1009: if (xflags & XMIT_HLINK_FIRST) {
1010: F_HL_GNUM(file) = flist->ndx_start + flist->used;
1011: } else
1012: F_HL_GNUM(file) = first_hlink_ndx;
1013: } else {
1014: static int32 cnt = 0;
1015: struct ht_int64_node *np;
1016: int64 ino;
1017: int32 ndx;
1018: if (protocol_version < 26) {
1019: dev = read_int(f);
1020: ino = read_int(f);
1021: } else {
1022: if (!(xflags & XMIT_SAME_DEV_pre30))
1023: dev = read_longint(f);
1024: ino = read_longint(f);
1025: }
1026: np = idev_find(dev, ino);
1027: ndx = (int32)(long)np->data - 1;
1028: if (ndx < 0) {
1029: ndx = cnt++;
1030: np->data = (void*)(long)cnt;
1031: }
1032: F_HL_GNUM(file) = ndx;
1033: }
1034: }
1035: #endif
1036:
1037: if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1038: if (S_ISREG(mode))
1039: bp = F_SUM(file);
1040: else {
1041: /* Prior to 28, we get a useless set of nulls. */
1042: bp = tmp_sum;
1043: }
1044: if (first_hlink_ndx >= flist->ndx_start) {
1045: struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1046: memcpy(bp, F_SUM(first), checksum_len);
1047: } else
1048: read_buf(f, bp, checksum_len);
1049: }
1050:
1051: #ifdef SUPPORT_ACLS
1052: if (preserve_acls && !S_ISLNK(mode))
1053: receive_acl(f, file);
1054: #endif
1055: #ifdef SUPPORT_XATTRS
1056: if (preserve_xattrs)
1057: receive_xattr(f, file);
1058: #endif
1059:
1060: if (S_ISREG(mode) || S_ISLNK(mode))
1061: stats.total_size += file_length;
1062:
1063: return file;
1064: }
1065:
1066: /* Create a file_struct for a named file by reading its stat() information
1067: * and performing extensive checks against global options.
1068: *
1069: * Returns a pointer to the new file struct, or NULL if there was an error
1070: * or this file should be excluded.
1071: *
1072: * Note: Any error (here or in send_file_name) that results in the omission of
1073: * an existent source file from the file list should set
1074: * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1075: * destination if --delete is on. */
1076: struct file_struct *make_file(const char *fname, struct file_list *flist,
1077: STRUCT_STAT *stp, int flags, int filter_level)
1078: {
1079: static char *lastdir;
1080: static int lastdir_len = -1;
1081: struct file_struct *file;
1082: char thisname[MAXPATHLEN];
1083: char linkname[MAXPATHLEN];
1084: int alloc_len, basename_len, linkname_len;
1085: int extra_len = file_extra_cnt * EXTRA_LEN;
1086: const char *basename;
1087: alloc_pool_t *pool;
1088: STRUCT_STAT st;
1089: char *bp;
1090:
1091: if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1092: io_error |= IOERR_GENERAL;
1093: rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1094: return NULL;
1095: }
1096: clean_fname(thisname, 0);
1097: if (sanitize_paths)
1098: sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1099:
1100: if (stp && S_ISDIR(stp->st_mode)) {
1101: st = *stp; /* Needed for "symlink/." with --relative. */
1102: *linkname = '\0'; /* make IBM code checker happy */
1103: } else if (readlink_stat(thisname, &st, linkname) != 0) {
1104: int save_errno = errno;
1105: /* See if file is excluded before reporting an error. */
1106: if (filter_level != NO_FILTERS
1107: && (is_excluded(thisname, 0, filter_level)
1108: || is_excluded(thisname, 1, filter_level))) {
1109: if (ignore_perishable && save_errno != ENOENT)
1110: non_perishable_cnt++;
1111: return NULL;
1112: }
1113: if (save_errno == ENOENT) {
1114: #ifdef SUPPORT_LINKS
1115: /* When our options tell us to follow a symlink that
1116: * points nowhere, tell the user about the symlink
1117: * instead of giving a "vanished" message. We only
1118: * dereference a symlink if one of the --copy*links
1119: * options was specified, so there's no need for the
1120: * extra lstat() if one of these options isn't on. */
1121: if ((copy_links || copy_unsafe_links || copy_dirlinks)
1122: && x_lstat(thisname, &st, NULL) == 0
1123: && S_ISLNK(st.st_mode)) {
1124: io_error |= IOERR_GENERAL;
1125: rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1126: full_fname(thisname));
1127: } else
1128: #endif
1129: {
1130: enum logcode c = am_daemon && protocol_version < 28
1131: ? FERROR : FWARNING;
1132: io_error |= IOERR_VANISHED;
1133: rprintf(c, "file has vanished: %s\n",
1134: full_fname(thisname));
1135: }
1136: } else {
1137: io_error |= IOERR_GENERAL;
1138: rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1139: full_fname(thisname));
1140: }
1141: return NULL;
1142: }
1143:
1144: if (filter_level == NO_FILTERS)
1145: goto skip_filters;
1146:
1147: if (S_ISDIR(st.st_mode)) {
1148: if (!xfer_dirs) {
1149: rprintf(FINFO, "skipping directory %s\n", thisname);
1150: return NULL;
1151: }
1152: /* -x only affects dirs because we need to avoid recursing
1153: * into a mount-point directory, not to avoid copying a
1154: * symlinked file if -L (or similar) was specified. */
1155: if (one_file_system && st.st_dev != filesystem_dev
1156: && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1157: if (one_file_system > 1) {
1158: if (verbose > 1) {
1159: rprintf(FINFO,
1160: "[%s] skipping mount-point dir %s\n",
1161: who_am_i(), thisname);
1162: }
1163: return NULL;
1164: }
1165: flags |= FLAG_MOUNT_DIR;
1166: flags &= ~FLAG_CONTENT_DIR;
1167: }
1168: } else
1169: flags &= ~FLAG_CONTENT_DIR;
1170:
1171: if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1172: if (ignore_perishable)
1173: non_perishable_cnt++;
1174: return NULL;
1175: }
1176:
1177: if (lp_ignore_nonreadable(module_id)) {
1178: #ifdef SUPPORT_LINKS
1179: if (!S_ISLNK(st.st_mode))
1180: #endif
1181: if (access(thisname, R_OK) != 0)
1182: return NULL;
1183: }
1184:
1185: skip_filters:
1186:
1187: /* Only divert a directory in the main transfer. */
1188: if (flist) {
1189: if (flist->prev && S_ISDIR(st.st_mode)
1190: && flags & FLAG_DIVERT_DIRS) {
1191: /* Room for parent/sibling/next-child info. */
1192: extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1193: if (relative_paths)
1194: extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1195: pool = dir_flist->file_pool;
1196: } else
1197: pool = flist->file_pool;
1198: } else {
1199: #ifdef SUPPORT_ACLS
1200: /* Directories need an extra int32 for the default ACL. */
1201: if (preserve_acls && S_ISDIR(st.st_mode))
1202: extra_len += EXTRA_LEN;
1203: #endif
1204: pool = NULL;
1205: }
1206:
1207: if (verbose > 2) {
1208: rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1209: who_am_i(), thisname, filter_level);
1210: }
1211:
1212: if ((basename = strrchr(thisname, '/')) != NULL) {
1213: int len = basename++ - thisname;
1214: if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1215: lastdir = new_array(char, len + 1);
1216: memcpy(lastdir, thisname, len);
1217: lastdir[len] = '\0';
1218: lastdir_len = len;
1219: }
1220: } else
1221: basename = thisname;
1222: basename_len = strlen(basename) + 1; /* count the '\0' */
1223:
1224: #ifdef SUPPORT_LINKS
1225: linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1226: #else
1227: linkname_len = 0;
1228: #endif
1229:
1230: #if SIZEOF_CAPITAL_OFF_T >= 8
1231: if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1232: extra_len += EXTRA_LEN;
1233: #endif
1234:
1235: #if EXTRA_ROUNDING > 0
1236: if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1237: extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1238: #endif
1239:
1240: alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1241: + linkname_len;
1242: if (pool)
1243: bp = pool_alloc(pool, alloc_len, "make_file");
1244: else {
1245: if (!(bp = new_array(char, alloc_len)))
1246: out_of_memory("make_file");
1247: }
1248:
1249: memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1250: bp += extra_len;
1251: file = (struct file_struct *)bp;
1252: bp += FILE_STRUCT_LEN;
1253:
1254: memcpy(bp, basename, basename_len);
1255:
1256: #ifdef SUPPORT_HARD_LINKS
1257: if (preserve_hard_links && flist && flist->prev) {
1258: if (protocol_version >= 28
1259: ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1260: : S_ISREG(st.st_mode)) {
1261: tmp_dev = (int64)st.st_dev;
1262: tmp_ino = (int64)st.st_ino;
1263: } else
1264: tmp_dev = -1;
1265: }
1266: #endif
1267:
1268: #ifdef HAVE_STRUCT_STAT_ST_RDEV
1269: if (IS_DEVICE(st.st_mode)) {
1270: tmp_rdev = st.st_rdev;
1271: st.st_size = 0;
1272: } else if (IS_SPECIAL(st.st_mode))
1273: st.st_size = 0;
1274: #endif
1275:
1276: file->flags = flags;
1277: file->modtime = st.st_mtime;
1278: file->len32 = (uint32)st.st_size;
1279: #if SIZEOF_CAPITAL_OFF_T >= 8
1280: if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1281: file->flags |= FLAG_LENGTH64;
1282: OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1283: }
1284: #endif
1285: file->mode = st.st_mode;
1286: if (preserve_uid)
1287: F_OWNER(file) = st.st_uid;
1288: if (preserve_gid)
1289: F_GROUP(file) = st.st_gid;
1290: if (am_generator && st.st_uid == our_uid)
1291: file->flags |= FLAG_OWNED_BY_US;
1292:
1293: if (basename != thisname)
1294: file->dirname = lastdir;
1295:
1296: #ifdef SUPPORT_LINKS
1297: if (linkname_len)
1298: memcpy(bp + basename_len, linkname, linkname_len);
1299: #endif
1300:
1301: if (always_checksum && am_sender && S_ISREG(st.st_mode))
1302: file_checksum(thisname, tmp_sum, st.st_size);
1303:
1304: if (am_sender)
1305: F_PATHNAME(file) = pathname;
1306: else if (!pool)
1307: F_DEPTH(file) = extra_len / EXTRA_LEN;
1308:
1309: if (basename_len == 0+1) {
1310: if (!pool)
1311: unmake_file(file);
1312: return NULL;
1313: }
1314:
1315: if (unsort_ndx)
1316: F_NDX(file) = dir_count;
1317:
1318: return file;
1319: }
1320:
1321: /* Only called for temporary file_struct entries created by make_file(). */
1322: void unmake_file(struct file_struct *file)
1323: {
1324: free(REQ_EXTRA(file, F_DEPTH(file)));
1325: }
1326:
1327: static struct file_struct *send_file_name(int f, struct file_list *flist,
1328: const char *fname, STRUCT_STAT *stp,
1329: int flags, int filter_level)
1330: {
1331: struct file_struct *file;
1332:
1333: file = make_file(fname, flist, stp, flags, filter_level);
1334: if (!file)
1335: return NULL;
1336:
1337: if (chmod_modes && !S_ISLNK(file->mode))
1338: file->mode = tweak_mode(file->mode, chmod_modes);
1339:
1340: if (f >= 0) {
1341: char fbuf[MAXPATHLEN];
1342: #ifdef SUPPORT_LINKS
1343: const char *symlink_name;
1344: int symlink_len;
1345: #ifdef ICONV_OPTION
1346: char symlink_buf[MAXPATHLEN];
1347: #endif
1348: #endif
1349: #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1350: stat_x sx;
1351: #endif
1352:
1353: #ifdef SUPPORT_LINKS
1354: if (preserve_links && S_ISLNK(file->mode)) {
1355: symlink_name = F_SYMLINK(file);
1356: symlink_len = strlen(symlink_name);
1357: if (symlink_len == 0) {
1358: io_error |= IOERR_GENERAL;
1359: f_name(file, fbuf);
1360: rprintf(FERROR_XFER,
1361: "skipping symlink with 0-length value: %s\n",
1362: full_fname(fbuf));
1363: return NULL;
1364: }
1365: } else {
1366: symlink_name = NULL;
1367: symlink_len = 0;
1368: }
1369: #endif
1370:
1371: #ifdef ICONV_OPTION
1372: if (ic_send != (iconv_t)-1) {
1373: xbuf outbuf, inbuf;
1374:
1375: INIT_CONST_XBUF(outbuf, fbuf);
1376:
1377: if (file->dirname) {
1378: INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1379: outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1380: if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1381: goto convert_error;
1382: outbuf.size += 2;
1383: fbuf[outbuf.len++] = '/';
1384: }
1385:
1386: INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1387: if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1388: convert_error:
1389: io_error |= IOERR_GENERAL;
1390: rprintf(FERROR_XFER,
1391: "[%s] cannot convert filename: %s (%s)\n",
1392: who_am_i(), f_name(file, fbuf), strerror(errno));
1393: return NULL;
1394: }
1395: fbuf[outbuf.len] = '\0';
1396:
1397: #ifdef SUPPORT_LINKS
1398: if (symlink_len && sender_symlink_iconv) {
1399: INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1400: INIT_CONST_XBUF(outbuf, symlink_buf);
1401: if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1402: io_error |= IOERR_GENERAL;
1403: f_name(file, fbuf);
1404: rprintf(FERROR_XFER,
1405: "[%s] cannot convert symlink data for: %s (%s)\n",
1406: who_am_i(), full_fname(fbuf), strerror(errno));
1407: return NULL;
1408: }
1409: symlink_buf[outbuf.len] = '\0';
1410:
1411: symlink_name = symlink_buf;
1412: symlink_len = outbuf.len;
1413: }
1414: #endif
1415: } else
1416: #endif
1417: f_name(file, fbuf);
1418:
1419: #ifdef SUPPORT_ACLS
1420: if (preserve_acls && !S_ISLNK(file->mode)) {
1421: sx.st.st_mode = file->mode;
1422: sx.acc_acl = sx.def_acl = NULL;
1423: if (get_acl(fname, &sx) < 0) {
1424: io_error |= IOERR_GENERAL;
1425: return NULL;
1426: }
1427: }
1428: #endif
1429: #ifdef SUPPORT_XATTRS
1430: if (preserve_xattrs) {
1431: sx.st.st_mode = file->mode;
1432: sx.xattr = NULL;
1433: if (get_xattr(fname, &sx) < 0) {
1434: io_error |= IOERR_GENERAL;
1435: return NULL;
1436: }
1437: }
1438: #endif
1439:
1440: send_file_entry(f, fbuf, file,
1441: #ifdef SUPPORT_LINKS
1442: symlink_name, symlink_len,
1443: #endif
1444: flist->used, flist->ndx_start);
1445:
1446: #ifdef SUPPORT_ACLS
1447: if (preserve_acls && !S_ISLNK(file->mode)) {
1448: send_acl(f, &sx);
1449: free_acl(&sx);
1450: }
1451: #endif
1452: #ifdef SUPPORT_XATTRS
1453: if (preserve_xattrs) {
1454: F_XATTR(file) = send_xattr(f, &sx);
1455: free_xattr(&sx);
1456: }
1457: #endif
1458: }
1459:
1460: maybe_emit_filelist_progress(flist->used + flist_count_offset);
1461:
1462: flist_expand(flist, 1);
1463: flist->files[flist->used++] = file;
1464:
1465: return file;
1466: }
1467:
1468: static void send_if_directory(int f, struct file_list *flist,
1469: struct file_struct *file,
1470: char *fbuf, unsigned int ol,
1471: int flags)
1472: {
1473: char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1474:
1475: if (S_ISDIR(file->mode)
1476: && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1477: void *save_filters;
1478: unsigned int len = strlen(fbuf);
1479: if (len > 1 && fbuf[len-1] == '/')
1480: fbuf[--len] = '\0';
1481: save_filters = push_local_filters(fbuf, len);
1482: send_directory(f, flist, fbuf, len, flags);
1483: pop_local_filters(save_filters);
1484: fbuf[ol] = '\0';
1485: if (is_dot_dir)
1486: fbuf[ol-1] = '.';
1487: }
1488: }
1489:
1490: static int file_compare(const void *file1, const void *file2)
1491: {
1492: return f_name_cmp(*(struct file_struct **)file1,
1493: *(struct file_struct **)file2);
1494: }
1495:
1496: /* The guts of a merge-sort algorithm. This was derived from the glibc
1497: * version, but I (Wayne) changed the merge code to do less copying and
1498: * to require only half the amount of temporary memory. */
1499: static void fsort_tmp(struct file_struct **fp, size_t num,
1500: struct file_struct **tmp)
1501: {
1502: struct file_struct **f1, **f2, **t;
1503: size_t n1, n2;
1504:
1505: n1 = num / 2;
1506: n2 = num - n1;
1507: f1 = fp;
1508: f2 = fp + n1;
1509:
1510: if (n1 > 1)
1511: fsort_tmp(f1, n1, tmp);
1512: if (n2 > 1)
1513: fsort_tmp(f2, n2, tmp);
1514:
1515: while (f_name_cmp(*f1, *f2) <= 0) {
1516: if (!--n1)
1517: return;
1518: f1++;
1519: }
1520:
1521: t = tmp;
1522: memcpy(t, f1, n1 * PTR_SIZE);
1523:
1524: *f1++ = *f2++, n2--;
1525:
1526: while (n1 > 0 && n2 > 0) {
1527: if (f_name_cmp(*t, *f2) <= 0)
1528: *f1++ = *t++, n1--;
1529: else
1530: *f1++ = *f2++, n2--;
1531: }
1532:
1533: if (n1 > 0)
1534: memcpy(f1, t, n1 * PTR_SIZE);
1535: }
1536:
1537: /* This file-struct sorting routine makes sure that any identical names in
1538: * the file list stay in the same order as they were in the original list.
1539: * This is particularly vital in inc_recurse mode where we expect a sort
1540: * on the flist to match the exact order of a sort on the dir_flist. */
1541: static void fsort(struct file_struct **fp, size_t num)
1542: {
1543: if (num <= 1)
1544: return;
1545:
1546: if (use_qsort)
1547: qsort(fp, num, PTR_SIZE, file_compare);
1548: else {
1549: struct file_struct **tmp = new_array(struct file_struct *,
1550: (num+1) / 2);
1551: fsort_tmp(fp, num, tmp);
1552: free(tmp);
1553: }
1554: }
1555:
1556: /* We take an entire set of sibling dirs from the sorted flist and link them
1557: * into the tree, setting the appropriate parent/child/sibling pointers. */
1558: static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1559: int dir_cnt)
1560: {
1561: int i;
1562: int32 *dp = NULL;
1563: int32 *parent_dp = parent_ndx < 0 ? NULL
1564: : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1565:
1566: flist_expand(dir_flist, dir_cnt);
1567: dir_flist->sorted = dir_flist->files;
1568:
1569: for (i = 0; dir_cnt; i++) {
1570: struct file_struct *file = from_flist->sorted[i];
1571:
1572: if (!S_ISDIR(file->mode))
1573: continue;
1574:
1575: dir_flist->files[dir_flist->used++] = file;
1576: dir_cnt--;
1577:
1578: if (file->basename[0] == '.' && file->basename[1] == '\0')
1579: continue;
1580:
1581: if (dp)
1582: DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1583: else if (parent_dp)
1584: DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1585: else
1586: send_dir_ndx = dir_flist->used - 1;
1587:
1588: dp = F_DIR_NODE_P(file);
1589: DIR_PARENT(dp) = parent_ndx;
1590: DIR_FIRST_CHILD(dp) = -1;
1591: }
1592: if (dp)
1593: DIR_NEXT_SIBLING(dp) = -1;
1594: }
1595:
1596: static void interpret_stat_error(const char *fname, int is_dir)
1597: {
1598: if (errno == ENOENT) {
1599: io_error |= IOERR_VANISHED;
1600: rprintf(FWARNING, "%s has vanished: %s\n",
1601: is_dir ? "directory" : "file", full_fname(fname));
1602: } else {
1603: io_error |= IOERR_GENERAL;
1604: rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1605: full_fname(fname));
1606: }
1607: }
1608:
1609: /* This function is normally called by the sender, but the receiving side also
1610: * calls it from get_dirlist() with f set to -1 so that we just construct the
1611: * file list in memory without sending it over the wire. Also, get_dirlist()
1612: * might call this with f set to -2, which also indicates that local filter
1613: * rules should be ignored. */
1614: static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1615: int flags)
1616: {
1617: struct dirent *di;
1618: unsigned remainder;
1619: char *p;
1620: DIR *d;
1621: int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1622: int start = flist->used;
1623: int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1624:
1625: assert(flist != NULL);
1626:
1627: if (!(d = opendir(fbuf))) {
1628: if (errno == ENOENT) {
1629: if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1630: interpret_stat_error(fbuf, True);
1631: return;
1632: }
1633: io_error |= IOERR_GENERAL;
1634: rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1635: return;
1636: }
1637:
1638: p = fbuf + len;
1639: if (len == 1 && *fbuf == '/')
1640: remainder = MAXPATHLEN - 1;
1641: else if (len < MAXPATHLEN-1) {
1642: *p++ = '/';
1643: *p = '\0';
1644: remainder = MAXPATHLEN - (len + 1);
1645: } else
1646: remainder = 0;
1647:
1648: for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1649: unsigned name_len;
1650: char *dname = d_name(di);
1651: if (dname[0] == '.' && (dname[1] == '\0'
1652: || (dname[1] == '.' && dname[2] == '\0')))
1653: continue;
1654: name_len = strlcpy(p, dname, remainder);
1655: if (name_len >= remainder) {
1656: char save = fbuf[len];
1657: fbuf[len] = '\0';
1658: io_error |= IOERR_GENERAL;
1659: rprintf(FERROR_XFER,
1660: "filename overflows max-path len by %u: %s/%s\n",
1661: name_len - remainder + 1, fbuf, dname);
1662: fbuf[len] = save;
1663: continue;
1664: }
1665: if (dname[0] == '\0') {
1666: io_error |= IOERR_GENERAL;
1667: rprintf(FERROR_XFER,
1668: "cannot send file with empty name in %s\n",
1669: full_fname(fbuf));
1670: continue;
1671: }
1672:
1673: send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1674: }
1675:
1676: fbuf[len] = '\0';
1677:
1678: if (errno) {
1679: io_error |= IOERR_GENERAL;
1680: rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1681: }
1682:
1683: closedir(d);
1684:
1685: if (f >= 0 && recurse && !divert_dirs) {
1686: int i, end = flist->used - 1;
1687: /* send_if_directory() bumps flist->used, so use "end". */
1688: for (i = start; i <= end; i++)
1689: send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1690: }
1691: }
1692:
1693: static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1694: char *start, char *limit, int flags, char name_type)
1695: {
1696: static char lastpath[MAXPATHLEN] = "";
1697: static int lastpath_len = 0;
1698: static struct file_struct *lastpath_struct = NULL;
1699: struct file_struct *file;
1700: item_list *relname_list;
1701: relnamecache **rnpp;
1702: int len, need_new_dir, depth = 0;
1703: struct filter_list_struct save_filter_list = filter_list;
1704:
1705: flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1706: filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1707:
1708: if (inc_recurse) {
1709: if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1710: && lastpath_len == limit - fname
1711: && strncmp(lastpath, fname, lastpath_len) == 0)
1712: need_new_dir = 0;
1713: else
1714: need_new_dir = 1;
1715: } else {
1716: char *tp = fname, *lp = lastpath;
1717: /* Skip any initial directories in our path that we
1718: * have in common with lastpath. */
1719: assert(start == fname);
1720: for ( ; ; tp++, lp++) {
1721: if (tp == limit) {
1722: if (*lp == '/' || *lp == '\0')
1723: goto done;
1724: break;
1725: }
1726: if (*lp != *tp)
1727: break;
1728: if (*tp == '/') {
1729: start = tp;
1730: depth++;
1731: }
1732: }
1733: need_new_dir = 1;
1734: }
1735:
1736: if (need_new_dir) {
1737: int save_copy_links = copy_links;
1738: int save_xfer_dirs = xfer_dirs;
1739: char *slash;
1740:
1741: copy_links = xfer_dirs = 1;
1742:
1743: *limit = '\0';
1744:
1745: for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1746: *slash = '\0';
1747: file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1748: depth++;
1749: if (!inc_recurse && file && S_ISDIR(file->mode))
1750: change_local_filter_dir(fname, strlen(fname), depth);
1751: *slash = '/';
1752: }
1753:
1754: file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1755: if (inc_recurse) {
1756: if (file && !S_ISDIR(file->mode))
1757: file = NULL;
1758: lastpath_struct = file;
1759: } else if (file && S_ISDIR(file->mode))
1760: change_local_filter_dir(fname, strlen(fname), ++depth);
1761:
1762: strlcpy(lastpath, fname, sizeof lastpath);
1763: lastpath_len = limit - fname;
1764:
1765: *limit = '/';
1766:
1767: copy_links = save_copy_links;
1768: xfer_dirs = save_xfer_dirs;
1769:
1770: if (!inc_recurse)
1771: goto done;
1772: }
1773:
1774: if (!lastpath_struct)
1775: goto done; /* dir must have vanished */
1776:
1777: len = strlen(limit+1);
1778: memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1779: if (!relname_list) {
1780: if (!(relname_list = new0(item_list)))
1781: out_of_memory("send_implied_dirs");
1782: memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1783: }
1784: rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1785: if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1786: out_of_memory("send_implied_dirs");
1787: (*rnpp)->name_type = name_type;
1788: strlcpy((*rnpp)->fname, limit+1, len + 1);
1789:
1790: done:
1791: filter_list = save_filter_list;
1792: }
1793:
1794: static NORETURN void fatal_unsafe_io_error(void)
1795: {
1796: /* This (sadly) can only happen when pushing data because
1797: * the sender does not know about what kind of delete
1798: * is in effect on the receiving side when pulling. */
1799: rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.\n");
1800: exit_cleanup(RERR_UNSUPPORTED);
1801: }
1802:
1803: static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1804: {
1805: char fbuf[MAXPATHLEN];
1806: item_list *relname_list;
1807: int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1808: size_t j;
1809:
1810: f_name(file, fbuf);
1811: dlen = strlen(fbuf);
1812:
1813: if (!change_pathname(file, NULL, 0))
1814: exit_cleanup(RERR_FILESELECT);
1815:
1816: change_local_filter_dir(fbuf, dlen, send_dir_depth);
1817:
1818: if (file->flags & FLAG_CONTENT_DIR) {
1819: if (one_file_system) {
1820: STRUCT_STAT st;
1821: if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1822: interpret_stat_error(fbuf, True);
1823: return;
1824: }
1825: filesystem_dev = st.st_dev;
1826: }
1827: send_directory(f, flist, fbuf, dlen, flags);
1828: }
1829:
1830: if (!relative_paths)
1831: return;
1832:
1833: memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1834: if (!relname_list)
1835: return;
1836:
1837: for (j = 0; j < relname_list->count; j++) {
1838: char *slash;
1839: relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1840: char name_type = rnp->name_type;
1841:
1842: fbuf[dlen] = '/';
1843: len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1844: free(rnp);
1845: if (len >= (int)sizeof fbuf)
1846: continue; /* Impossible... */
1847:
1848: slash = strchr(fbuf+dlen+1, '/');
1849: if (slash) {
1850: send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1851: continue;
1852: }
1853:
1854: if (name_type != NORMAL_NAME) {
1855: STRUCT_STAT st;
1856: if (link_stat(fbuf, &st, 1) != 0) {
1857: interpret_stat_error(fbuf, True);
1858: continue;
1859: }
1860: send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1861: } else
1862: send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1863: }
1864:
1865: free(relname_list);
1866: }
1867:
1868: void send_extra_file_list(int f, int at_least)
1869: {
1870: struct file_list *flist;
1871: int64 start_write;
1872: uint16 prev_flags;
1873: int old_cnt, save_io_error = io_error;
1874:
1875: if (flist_eof)
1876: return;
1877:
1878: /* Keep sending data until we have the requested number of
1879: * files in the upcoming file-lists. */
1880: old_cnt = cur_flist->used;
1881: for (flist = first_flist; flist != cur_flist; flist = flist->next)
1882: old_cnt += flist->used;
1883: while (file_total - old_cnt < at_least) {
1884: struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1885: int dir_ndx, dstart = dir_count;
1886: const char *pathname = F_PATHNAME(file);
1887: int32 *dp;
1888:
1889: flist = flist_new(0, "send_extra_file_list");
1890: start_write = stats.total_written;
1891:
1892: if (unsort_ndx)
1893: dir_ndx = F_NDX(file);
1894: else
1895: dir_ndx = send_dir_ndx;
1896: write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1897: flist->parent_ndx = dir_ndx;
1898:
1899: send1extra(f, file, flist);
1900: prev_flags = file->flags;
1901: dp = F_DIR_NODE_P(file);
1902:
1903: /* If there are any duplicate directory names that follow, we
1904: * send all the dirs together in one file-list. The dir_flist
1905: * tree links all the child subdirs onto the last dup dir. */
1906: while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1907: && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1908: send_dir_ndx = dir_ndx;
1909: file = dir_flist->sorted[dir_ndx];
1910: /* Try to avoid some duplicate scanning of identical dirs. */
1911: if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1912: file->flags &= ~FLAG_CONTENT_DIR;
1913: send1extra(f, file, flist);
1914: prev_flags = file->flags;
1915: dp = F_DIR_NODE_P(file);
1916: }
1917:
1918: if (io_error == save_io_error || ignore_errors)
1919: write_byte(f, 0);
1920: else if (use_safe_inc_flist) {
1921: write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1922: write_varint(f, io_error);
1923: } else {
1924: if (delete_during)
1925: fatal_unsafe_io_error();
1926: write_byte(f, 0);
1927: }
1928:
1929: if (need_unsorted_flist) {
1930: if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1931: out_of_memory("send_extra_file_list");
1932: memcpy(flist->sorted, flist->files,
1933: flist->used * sizeof (struct file_struct*));
1934: } else
1935: flist->sorted = flist->files;
1936:
1937: flist_sort_and_clean(flist, 0);
1938:
1939: add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
1940: flist_done_allocating(flist);
1941:
1942: file_total += flist->used;
1943: stats.flist_size += stats.total_written - start_write;
1944: stats.num_files += flist->used;
1945: if (verbose > 3)
1946: output_flist(flist);
1947:
1948: if (DIR_FIRST_CHILD(dp) >= 0) {
1949: send_dir_ndx = DIR_FIRST_CHILD(dp);
1950: send_dir_depth++;
1951: } else {
1952: while (DIR_NEXT_SIBLING(dp) < 0) {
1953: if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1954: write_ndx(f, NDX_FLIST_EOF);
1955: flist_eof = 1;
1956: change_local_filter_dir(NULL, 0, 0);
1957: goto finish;
1958: }
1959: send_dir_depth--;
1960: file = dir_flist->sorted[send_dir_ndx];
1961: dp = F_DIR_NODE_P(file);
1962: }
1963: send_dir_ndx = DIR_NEXT_SIBLING(dp);
1964: }
1965: }
1966:
1967: finish:
1968: if (io_error != save_io_error && !ignore_errors)
1969: send_msg_int(MSG_IO_ERROR, io_error);
1970: }
1971:
1972: struct file_list *send_file_list(int f, int argc, char *argv[])
1973: {
1974: static const char *lastdir;
1975: static int lastdir_len = -1;
1976: int len, dirlen;
1977: STRUCT_STAT st;
1978: char *p, *dir;
1979: struct file_list *flist;
1980: struct timeval start_tv, end_tv;
1981: int64 start_write;
1982: int use_ff_fd = 0;
1983: int disable_buffering;
1984: int flags = recurse ? FLAG_CONTENT_DIR : 0;
1985: int reading_remotely = filesfrom_host != NULL;
1986: int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1987: #ifdef ICONV_OPTION
1988: | (filesfrom_convert ? RL_CONVERT : 0)
1989: #endif
1990: | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
1991: int implied_dot_dir = 0;
1992:
1993: rprintf(FLOG, "building file list\n");
1994: if (show_filelist_p())
1995: start_filelist_progress("building file list");
1996: else if (inc_recurse && verbose && !am_server)
1997: rprintf(FCLIENT, "sending incremental file list\n");
1998:
1999: start_write = stats.total_written;
2000: gettimeofday(&start_tv, NULL);
2001:
2002: if (relative_paths && protocol_version >= 30)
2003: implied_dirs = 1; /* We send flagged implied dirs */
2004:
2005: #ifdef SUPPORT_HARD_LINKS
2006: if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2007: init_hard_links();
2008: #endif
2009:
2010: flist = cur_flist = flist_new(0, "send_file_list");
2011: if (inc_recurse) {
2012: dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2013: flags |= FLAG_DIVERT_DIRS;
2014: } else
2015: dir_flist = cur_flist;
2016:
2017: disable_buffering = io_start_buffering_out(f);
2018: if (filesfrom_fd >= 0) {
2019: if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2020: rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2021: full_fname(argv[0]));
2022: exit_cleanup(RERR_FILESELECT);
2023: }
2024: use_ff_fd = 1;
2025: }
2026:
2027: if (!orig_dir)
2028: orig_dir = strdup(curr_dir);
2029:
2030: while (1) {
2031: char fbuf[MAXPATHLEN], *fn, name_type;
2032:
2033: if (use_ff_fd) {
2034: if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2035: break;
2036: sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2037: } else {
2038: if (argc-- == 0)
2039: break;
2040: strlcpy(fbuf, *argv++, MAXPATHLEN);
2041: if (sanitize_paths)
2042: sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2043: }
2044:
2045: len = strlen(fbuf);
2046: if (relative_paths) {
2047: /* We clean up fbuf below. */
2048: name_type = NORMAL_NAME;
2049: } else if (!len || fbuf[len - 1] == '/') {
2050: if (len == 2 && fbuf[0] == '.') {
2051: /* Turn "./" into just "." rather than "./." */
2052: fbuf[--len] = '\0';
2053: } else {
2054: if (len + 1 >= MAXPATHLEN)
2055: overflow_exit("send_file_list");
2056: fbuf[len++] = '.';
2057: fbuf[len] = '\0';
2058: }
2059: name_type = DOTDIR_NAME;
2060: } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2061: && (len == 2 || fbuf[len-3] == '/')) {
2062: if (len + 2 >= MAXPATHLEN)
2063: overflow_exit("send_file_list");
2064: fbuf[len++] = '/';
2065: fbuf[len++] = '.';
2066: fbuf[len] = '\0';
2067: name_type = DOTDIR_NAME;
2068: } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2069: name_type = DOTDIR_NAME;
2070: else
2071: name_type = NORMAL_NAME;
2072:
2073: dir = NULL;
2074:
2075: if (!relative_paths) {
2076: p = strrchr(fbuf, '/');
2077: if (p) {
2078: *p = '\0';
2079: if (p == fbuf)
2080: dir = "/";
2081: else
2082: dir = fbuf;
2083: len -= p - fbuf + 1;
2084: fn = p + 1;
2085: } else
2086: fn = fbuf;
2087: } else {
2088: if ((p = strstr(fbuf, "/./")) != NULL) {
2089: *p = '\0';
2090: if (p == fbuf)
2091: dir = "/";
2092: else {
2093: dir = fbuf;
2094: clean_fname(dir, 0);
2095: }
2096: fn = p + 3;
2097: while (*fn == '/')
2098: fn++;
2099: if (!*fn)
2100: *--fn = '\0'; /* ensure room for '.' */
2101: } else
2102: fn = fbuf;
2103: /* A leading ./ can be used in relative mode to affect
2104: * the dest dir without its name being in the path. */
2105: if (*fn == '.' && fn[1] == '/' && fn[2] && !implied_dot_dir)
2106: implied_dot_dir = -1;
2107: len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2108: | CFN_DROP_TRAILING_DOT_DIR);
2109: if (len == 1) {
2110: if (fn[0] == '/') {
2111: fn = "/.";
2112: len = 2;
2113: name_type = DOTDIR_NAME;
2114: } else if (fn[0] == '.')
2115: name_type = DOTDIR_NAME;
2116: } else if (fn[len-1] == '/') {
2117: fn[--len] = '\0';
2118: if (len == 1 && *fn == '.')
2119: name_type = DOTDIR_NAME;
2120: else
2121: name_type = SLASH_ENDING_NAME;
2122: }
2123: /* Reject a ".." dir in the active part of the path. */
2124: for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2125: if ((p[2] == '/' || p[2] == '\0')
2126: && (p == fn || p[-1] == '/')) {
2127: rprintf(FERROR,
2128: "found \"..\" dir in relative path: %s\n",
2129: fn);
2130: exit_cleanup(RERR_SYNTAX);
2131: }
2132: }
2133: }
2134:
2135: if (!*fn) {
2136: len = 1;
2137: fn = ".";
2138: name_type = DOTDIR_NAME;
2139: }
2140:
2141: dirlen = dir ? strlen(dir) : 0;
2142: if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2143: if (!change_pathname(NULL, dir, -dirlen))
2144: goto bad_path;
2145: lastdir = pathname;
2146: lastdir_len = pathname_len;
2147: } else if (!change_pathname(NULL, lastdir, lastdir_len)) {
2148: bad_path:
2149: if (implied_dot_dir < 0)
2150: implied_dot_dir = 0;
2151: continue;
2152: }
2153:
2154: if (implied_dot_dir < 0) {
2155: implied_dot_dir = 1;
2156: send_file_name(f, flist, ".", NULL, (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR, ALL_FILTERS);
2157: }
2158:
2159: if (fn != fbuf)
2160: memmove(fbuf, fn, len + 1);
2161:
2162: if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2163: || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2164: || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2165: io_error |= IOERR_GENERAL;
2166: rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2167: full_fname(fbuf));
2168: continue;
2169: }
2170:
2171: /* A dot-dir should not be excluded! */
2172: if (name_type != DOTDIR_NAME
2173: && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2174: continue;
2175:
2176: if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2177: rprintf(FINFO, "skipping directory %s\n", fbuf);
2178: continue;
2179: }
2180:
2181: if (inc_recurse && relative_paths && *fbuf) {
2182: if ((p = strchr(fbuf+1, '/')) != NULL) {
2183: if (p - fbuf == 1 && *fbuf == '.') {
2184: if ((fn = strchr(p+1, '/')) != NULL)
2185: p = fn;
2186: } else
2187: fn = p;
2188: send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2189: if (fn == p)
2190: continue;
2191: }
2192: } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2193: /* Send the implied directories at the start of the
2194: * source spec, so we get their permissions right. */
2195: send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2196: }
2197:
2198: if (one_file_system)
2199: filesystem_dev = st.st_dev;
2200:
2201: if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2202: struct file_struct *file;
2203: file = send_file_name(f, flist, fbuf, &st,
2204: FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2205: NO_FILTERS);
2206: if (!file)
2207: continue;
2208: if (inc_recurse) {
2209: if (name_type == DOTDIR_NAME) {
2210: if (send_dir_depth < 0) {
2211: send_dir_depth = 0;
2212: change_local_filter_dir(fbuf, len, send_dir_depth);
2213: }
2214: send_directory(f, flist, fbuf, len, flags);
2215: }
2216: } else
2217: send_if_directory(f, flist, file, fbuf, len, flags);
2218: } else
2219: send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2220: }
2221:
2222: gettimeofday(&end_tv, NULL);
2223: stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2224: + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2225: if (stats.flist_buildtime == 0)
2226: stats.flist_buildtime = 1;
2227: start_tv = end_tv;
2228:
2229: /* Indicate end of file list */
2230: if (io_error == 0 || ignore_errors)
2231: write_byte(f, 0);
2232: else if (use_safe_inc_flist) {
2233: write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2234: write_varint(f, io_error);
2235: } else {
2236: if (delete_during && inc_recurse)
2237: fatal_unsafe_io_error();
2238: write_byte(f, 0);
2239: }
2240:
2241: #ifdef SUPPORT_HARD_LINKS
2242: if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2243: idev_destroy();
2244: #endif
2245:
2246: if (show_filelist_p())
2247: finish_filelist_progress(flist);
2248:
2249: gettimeofday(&end_tv, NULL);
2250: stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2251: + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2252:
2253: /* When converting names, both sides keep an unsorted file-list array
2254: * because the names will differ on the sending and receiving sides
2255: * (both sides will use the unsorted index number for each item). */
2256:
2257: /* Sort the list without removing any duplicates. This allows the
2258: * receiving side to ask for whatever name it kept. For incremental
2259: * recursion mode, the sender marks duplicate dirs so that it can
2260: * send them together in a single file-list. */
2261: if (need_unsorted_flist) {
2262: if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2263: out_of_memory("send_file_list");
2264: memcpy(flist->sorted, flist->files,
2265: flist->used * sizeof (struct file_struct*));
2266: } else
2267: flist->sorted = flist->files;
2268: flist_sort_and_clean(flist, 0);
2269: file_total += flist->used;
2270:
2271: if (numeric_ids <= 0 && !inc_recurse)
2272: send_id_list(f);
2273:
2274: set_msg_fd_in(-1);
2275:
2276: /* send the io_error flag */
2277: if (protocol_version < 30)
2278: write_int(f, ignore_errors ? 0 : io_error);
2279: else if (!use_safe_inc_flist && io_error && !ignore_errors)
2280: send_msg_int(MSG_IO_ERROR, io_error);
2281:
2282: if (disable_buffering)
2283: io_end_buffering_out();
2284:
2285: stats.flist_size = stats.total_written - start_write;
2286: stats.num_files = flist->used;
2287:
2288: if (verbose > 3)
2289: output_flist(flist);
2290:
2291: if (verbose > 2)
2292: rprintf(FINFO, "send_file_list done\n");
2293:
2294: if (inc_recurse) {
2295: send_dir_depth = 1;
2296: add_dirs_to_tree(-1, flist, dir_count);
2297: if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2298: flist->parent_ndx = -1;
2299: flist_done_allocating(flist);
2300: if (send_dir_ndx < 0) {
2301: write_ndx(f, NDX_FLIST_EOF);
2302: flist_eof = 1;
2303: }
2304: else if (file_total == 1) {
2305: /* If we're creating incremental file-lists and there
2306: * was just 1 item in the first file-list, send 1 more
2307: * file-list to check if this is a 1-file xfer. */
2308: send_extra_file_list(f, 1);
2309: }
2310: }
2311:
2312: return flist;
2313: }
2314:
2315: struct file_list *recv_file_list(int f)
2316: {
2317: struct file_list *flist;
2318: int dstart, flags;
2319: int64 start_read;
2320: int save_verbose = verbose;
2321:
2322: if (!first_flist)
2323: rprintf(FLOG, "receiving file list\n");
2324: if (show_filelist_p())
2325: start_filelist_progress("receiving file list");
2326: else if (inc_recurse && verbose && !am_server && !first_flist)
2327: rprintf(FCLIENT, "receiving incremental file list\n");
2328:
2329: start_read = stats.total_read;
2330:
2331: #ifdef SUPPORT_HARD_LINKS
2332: if (preserve_hard_links && !first_flist)
2333: init_hard_links();
2334: #endif
2335:
2336: flist = flist_new(0, "recv_file_list");
2337:
2338: if (inc_recurse) {
2339: if (flist->ndx_start == 1)
2340: dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2341: dstart = dir_flist->used;
2342: } else {
2343: dir_flist = flist;
2344: dstart = 0;
2345: }
2346:
2347: if (am_server && verbose > 2)
2348: verbose = 2;
2349: while ((flags = read_byte(f)) != 0) {
2350: struct file_struct *file;
2351:
2352: if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2353: flags |= read_byte(f) << 8;
2354:
2355: if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2356: int err;
2357: if (!use_safe_inc_flist) {
2358: rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2359: exit_cleanup(RERR_PROTOCOL);
2360: }
2361: err = read_varint(f);
2362: if (!ignore_errors)
2363: io_error |= err;
2364: break;
2365: }
2366:
2367: flist_expand(flist, 1);
2368: file = recv_file_entry(f, flist, flags);
2369:
2370: if (inc_recurse && S_ISDIR(file->mode)) {
2371: flist_expand(dir_flist, 1);
2372: dir_flist->files[dir_flist->used++] = file;
2373: }
2374:
2375: flist->files[flist->used++] = file;
2376:
2377: maybe_emit_filelist_progress(flist->used);
2378:
2379: if (verbose > 2) {
2380: char *name = f_name(file, NULL);
2381: rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2382: }
2383: }
2384: file_total += flist->used;
2385: verbose = save_verbose;
2386:
2387: if (verbose > 2)
2388: rprintf(FINFO, "received %d names\n", flist->used);
2389:
2390: if (show_filelist_p())
2391: finish_filelist_progress(flist);
2392:
2393: if (need_unsorted_flist) {
2394: /* Create an extra array of index pointers that we can sort for
2395: * the generator's use (for wading through the files in sorted
2396: * order and for calling flist_find()). We keep the "files"
2397: * list unsorted for our exchange of index numbers with the
2398: * other side (since their names may not sort the same). */
2399: if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2400: out_of_memory("recv_file_list");
2401: memcpy(flist->sorted, flist->files,
2402: flist->used * sizeof (struct file_struct*));
2403: if (inc_recurse && dir_flist->used > dstart) {
2404: static int dir_flist_malloced = 0;
2405: if (dir_flist_malloced < dir_flist->malloced) {
2406: dir_flist->sorted = realloc_array(dir_flist->sorted,
2407: struct file_struct *,
2408: dir_flist->malloced);
2409: dir_flist_malloced = dir_flist->malloced;
2410: }
2411: memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2412: (dir_flist->used - dstart) * sizeof (struct file_struct*));
2413: fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2414: }
2415: } else {
2416: flist->sorted = flist->files;
2417: if (inc_recurse && dir_flist->used > dstart) {
2418: dir_flist->sorted = dir_flist->files;
2419: fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2420: }
2421: }
2422:
2423: if (inc_recurse)
2424: flist_done_allocating(flist);
2425: else if (f >= 0)
2426: recv_id_list(f, flist);
2427:
2428: flist_sort_and_clean(flist, relative_paths);
2429:
2430: if (protocol_version < 30) {
2431: /* Recv the io_error flag */
2432: if (ignore_errors)
2433: read_int(f);
2434: else
2435: io_error |= read_int(f);
2436: } else if (inc_recurse && flist->ndx_start == 1) {
2437: if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2438: flist->parent_ndx = -1;
2439: }
2440:
2441: if (verbose > 3)
2442: output_flist(flist);
2443:
2444: if (verbose > 2)
2445: rprintf(FINFO, "recv_file_list done\n");
2446:
2447: stats.flist_size += stats.total_read - start_read;
2448: stats.num_files += flist->used;
2449:
2450: return flist;
2451: }
2452:
2453: /* This is only used once by the receiver if the very first file-list
2454: * has exactly one item in it. */
2455: void recv_additional_file_list(int f)
2456: {
2457: struct file_list *flist;
2458: int ndx = read_ndx(f);
2459: if (ndx == NDX_FLIST_EOF) {
2460: flist_eof = 1;
2461: change_local_filter_dir(NULL, 0, 0);
2462: } else {
2463: ndx = NDX_FLIST_OFFSET - ndx;
2464: if (ndx < 0 || ndx >= dir_flist->used) {
2465: ndx = NDX_FLIST_OFFSET - ndx;
2466: rprintf(FERROR,
2467: "[%s] Invalid dir index: %d (%d - %d)\n",
2468: who_am_i(), ndx, NDX_FLIST_OFFSET,
2469: NDX_FLIST_OFFSET - dir_flist->used + 1);
2470: exit_cleanup(RERR_PROTOCOL);
2471: }
2472: if (verbose > 3) {
2473: rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2474: who_am_i(), ndx);
2475: }
2476: flist = recv_file_list(f);
2477: flist->parent_ndx = ndx;
2478: }
2479: }
2480:
2481: /* Search for an identically-named item in the file list. Note that the
2482: * items must agree in their directory-ness, or no match is returned. */
2483: int flist_find(struct file_list *flist, struct file_struct *f)
2484: {
2485: int low = flist->low, high = flist->high;
2486: int diff, mid, mid_up;
2487:
2488: while (low <= high) {
2489: mid = (low + high) / 2;
2490: if (F_IS_ACTIVE(flist->sorted[mid]))
2491: mid_up = mid;
2492: else {
2493: /* Scan for the next non-empty entry using the cached
2494: * distance values. If the value isn't fully up-to-
2495: * date, update it. */
2496: mid_up = mid + F_DEPTH(flist->sorted[mid]);
2497: if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2498: do {
2499: mid_up += F_DEPTH(flist->sorted[mid_up]);
2500: } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2501: F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2502: }
2503: if (mid_up > high) {
2504: /* If there's nothing left above us, set high to
2505: * a non-empty entry below us and continue. */
2506: high = mid - (int)flist->sorted[mid]->len32;
2507: if (!F_IS_ACTIVE(flist->sorted[high])) {
2508: do {
2509: high -= (int)flist->sorted[high]->len32;
2510: } while (!F_IS_ACTIVE(flist->sorted[high]));
2511: flist->sorted[mid]->len32 = mid - high;
2512: }
2513: continue;
2514: }
2515: }
2516: diff = f_name_cmp(flist->sorted[mid_up], f);
2517: if (diff == 0) {
2518: if (protocol_version < 29
2519: && S_ISDIR(flist->sorted[mid_up]->mode)
2520: != S_ISDIR(f->mode))
2521: return -1;
2522: return mid_up;
2523: }
2524: if (diff < 0)
2525: low = mid_up + 1;
2526: else
2527: high = mid - 1;
2528: }
2529: return -1;
2530: }
2531:
2532: /* Search for an identically-named item in the file list. Differs from
2533: * flist_find in that an item that agrees with "f" in directory-ness is
2534: * preferred but one that does not is still found. */
2535: int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2536: {
2537: mode_t save_mode;
2538: int ndx;
2539:
2540: /* First look for an item that agrees in directory-ness. */
2541: ndx = flist_find(flist, f);
2542: if (ndx >= 0)
2543: return ndx;
2544:
2545: /* Temporarily flip f->mode to look for an item of opposite
2546: * directory-ness. */
2547: save_mode = f->mode;
2548: f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2549: ndx = flist_find(flist, f);
2550: f->mode = save_mode;
2551: return ndx;
2552: }
2553:
2554: /*
2555: * Free up any resources a file_struct has allocated
2556: * and clear the file.
2557: */
2558: void clear_file(struct file_struct *file)
2559: {
2560: /* The +1 zeros out the first char of the basename. */
2561: memset(file, 0, FILE_STRUCT_LEN + 1);
2562: /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2563: * entry. Likewise for len32 in the opposite direction. We assume
2564: * that we're alone for now since flist_find() will adjust the counts
2565: * it runs into that aren't up-to-date. */
2566: file->len32 = F_DEPTH(file) = 1;
2567: }
2568:
2569: /* Allocate a new file list. */
2570: struct file_list *flist_new(int flags, char *msg)
2571: {
2572: struct file_list *flist;
2573:
2574: if (!(flist = new0(struct file_list)))
2575: out_of_memory(msg);
2576:
2577: if (flags & FLIST_TEMP) {
2578: if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2579: out_of_memory, POOL_INTERN)))
2580: out_of_memory(msg);
2581: } else {
2582: /* This is a doubly linked list with prev looping back to
2583: * the end of the list, but the last next pointer is NULL. */
2584: if (!first_flist) {
2585: flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2586: out_of_memory, POOL_INTERN);
2587: if (!flist->file_pool)
2588: out_of_memory(msg);
2589:
2590: flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2591:
2592: first_flist = cur_flist = flist->prev = flist;
2593: } else {
2594: struct file_list *prev = first_flist->prev;
2595:
2596: flist->file_pool = first_flist->file_pool;
2597:
2598: flist->ndx_start = prev->ndx_start + prev->used + 1;
2599: flist->flist_num = prev->flist_num + 1;
2600:
2601: flist->prev = prev;
2602: prev->next = first_flist->prev = flist;
2603: }
2604: flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2605: flist_cnt++;
2606: }
2607:
2608: return flist;
2609: }
2610:
2611: /* Free up all elements in a flist. */
2612: void flist_free(struct file_list *flist)
2613: {
2614: if (!flist->prev) {
2615: /* Was FLIST_TEMP dir-list. */
2616: } else if (flist == flist->prev) {
2617: first_flist = cur_flist = NULL;
2618: file_total = 0;
2619: flist_cnt = 0;
2620: } else {
2621: if (flist == cur_flist)
2622: cur_flist = flist->next;
2623: if (flist == first_flist)
2624: first_flist = first_flist->next;
2625: else {
2626: flist->prev->next = flist->next;
2627: if (!flist->next)
2628: flist->next = first_flist;
2629: }
2630: flist->next->prev = flist->prev;
2631: file_total -= flist->used;
2632: flist_cnt--;
2633: }
2634:
2635: if (!flist->prev || !flist_cnt)
2636: pool_destroy(flist->file_pool);
2637: else
2638: pool_free_old(flist->file_pool, flist->pool_boundary);
2639:
2640: if (flist->sorted && flist->sorted != flist->files)
2641: free(flist->sorted);
2642: free(flist->files);
2643: free(flist);
2644: }
2645:
2646: /* This routine ensures we don't have any duplicate names in our file list.
2647: * duplicate names can cause corruption because of the pipelining. */
2648: static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2649: {
2650: char fbuf[MAXPATHLEN];
2651: int i, prev_i;
2652:
2653: if (!flist)
2654: return;
2655: if (flist->used == 0) {
2656: flist->high = -1;
2657: flist->low = 0;
2658: return;
2659: }
2660:
2661: fsort(flist->sorted, flist->used);
2662:
2663: if (!am_sender || inc_recurse) {
2664: for (i = prev_i = 0; i < flist->used; i++) {
2665: if (F_IS_ACTIVE(flist->sorted[i])) {
2666: prev_i = i;
2667: break;
2668: }
2669: }
2670: flist->low = prev_i;
2671: } else {
2672: i = prev_i = flist->used - 1;
2673: flist->low = 0;
2674: }
2675:
2676: while (++i < flist->used) {
2677: int j;
2678: struct file_struct *file = flist->sorted[i];
2679:
2680: if (!F_IS_ACTIVE(file))
2681: continue;
2682: if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2683: j = prev_i;
2684: else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2685: int save_mode = file->mode;
2686: /* Make sure that this directory doesn't duplicate a
2687: * non-directory earlier in the list. */
2688: flist->high = prev_i;
2689: file->mode = S_IFREG;
2690: j = flist_find(flist, file);
2691: file->mode = save_mode;
2692: } else
2693: j = -1;
2694: if (j >= 0) {
2695: int keep, drop;
2696: /* If one is a dir and the other is not, we want to
2697: * keep the dir because it might have contents in the
2698: * list. Otherwise keep the first one. */
2699: if (S_ISDIR(file->mode)) {
2700: struct file_struct *fp = flist->sorted[j];
2701: if (!S_ISDIR(fp->mode))
2702: keep = i, drop = j;
2703: else {
2704: if (am_sender)
2705: file->flags |= FLAG_DUPLICATE;
2706: else { /* Make sure we merge our vital flags. */
2707: fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2708: fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2709: }
2710: keep = j, drop = i;
2711: }
2712: } else
2713: keep = j, drop = i;
2714:
2715: if (!am_sender) {
2716: if (verbose > 1) {
2717: rprintf(FINFO,
2718: "removing duplicate name %s from file list (%d)\n",
2719: f_name(file, fbuf), drop + flist->ndx_start);
2720: }
2721: clear_file(flist->sorted[drop]);
2722: }
2723:
2724: if (keep == i) {
2725: if (flist->low == drop) {
2726: for (j = drop + 1;
2727: j < i && !F_IS_ACTIVE(flist->sorted[j]);
2728: j++) {}
2729: flist->low = j;
2730: }
2731: prev_i = i;
2732: }
2733: } else
2734: prev_i = i;
2735: }
2736: flist->high = prev_i;
2737:
2738: if (strip_root) {
2739: /* We need to strip off the leading slashes for relative
2740: * paths, but this must be done _after_ the sorting phase. */
2741: for (i = flist->low; i <= flist->high; i++) {
2742: struct file_struct *file = flist->sorted[i];
2743:
2744: if (!file->dirname)
2745: continue;
2746: while (*file->dirname == '/')
2747: file->dirname++;
2748: if (!*file->dirname)
2749: file->dirname = NULL;
2750: }
2751: }
2752:
2753: if (prune_empty_dirs && !am_sender) {
2754: int j, prev_depth = 0;
2755:
2756: prev_i = 0; /* It's OK that this isn't really true. */
2757:
2758: for (i = flist->low; i <= flist->high; i++) {
2759: struct file_struct *fp, *file = flist->sorted[i];
2760:
2761: /* This temporarily abuses the F_DEPTH() value for a
2762: * directory that is in a chain that might get pruned.
2763: * We restore the old value if it gets a reprieve. */
2764: if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2765: /* Dump empty dirs when coming back down. */
2766: for (j = prev_depth; j >= F_DEPTH(file); j--) {
2767: fp = flist->sorted[prev_i];
2768: if (F_DEPTH(fp) >= 0)
2769: break;
2770: prev_i = -F_DEPTH(fp)-1;
2771: clear_file(fp);
2772: }
2773: prev_depth = F_DEPTH(file);
2774: if (is_excluded(f_name(file, fbuf), 1,
2775: ALL_FILTERS)) {
2776: /* Keep dirs through this dir. */
2777: for (j = prev_depth-1; ; j--) {
2778: fp = flist->sorted[prev_i];
2779: if (F_DEPTH(fp) >= 0)
2780: break;
2781: prev_i = -F_DEPTH(fp)-1;
2782: F_DEPTH(fp) = j;
2783: }
2784: } else
2785: F_DEPTH(file) = -prev_i-1;
2786: prev_i = i;
2787: } else {
2788: /* Keep dirs through this non-dir. */
2789: for (j = prev_depth; ; j--) {
2790: fp = flist->sorted[prev_i];
2791: if (F_DEPTH(fp) >= 0)
2792: break;
2793: prev_i = -F_DEPTH(fp)-1;
2794: F_DEPTH(fp) = j;
2795: }
2796: }
2797: }
2798: /* Dump all remaining empty dirs. */
2799: while (1) {
2800: struct file_struct *fp = flist->sorted[prev_i];
2801: if (F_DEPTH(fp) >= 0)
2802: break;
2803: prev_i = -F_DEPTH(fp)-1;
2804: clear_file(fp);
2805: }
2806:
2807: for (i = flist->low; i <= flist->high; i++) {
2808: if (F_IS_ACTIVE(flist->sorted[i]))
2809: break;
2810: }
2811: flist->low = i;
2812: for (i = flist->high; i >= flist->low; i--) {
2813: if (F_IS_ACTIVE(flist->sorted[i]))
2814: break;
2815: }
2816: flist->high = i;
2817: }
2818: }
2819:
2820: static void output_flist(struct file_list *flist)
2821: {
2822: char uidbuf[16], gidbuf[16], depthbuf[16];
2823: struct file_struct *file;
2824: const char *root, *dir, *slash, *name, *trail;
2825: const char *who = who_am_i();
2826: int i;
2827:
2828: rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2829: who, flist->ndx_start, flist->used, flist->low, flist->high);
2830: for (i = 0; i < flist->used; i++) {
2831: file = flist->files[i];
2832: if ((am_root || am_sender) && uid_ndx) {
2833: snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2834: F_OWNER(file));
2835: } else
2836: *uidbuf = '\0';
2837: if (gid_ndx) {
2838: static char parens[] = "(\0)\0\0\0";
2839: char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2840: snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2841: pp, F_GROUP(file), pp + 2);
2842: } else
2843: *gidbuf = '\0';
2844: if (!am_sender)
2845: snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2846: if (F_IS_ACTIVE(file)) {
2847: root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2848: if ((dir = file->dirname) == NULL)
2849: dir = slash = "";
2850: else
2851: slash = "/";
2852: name = file->basename;
2853: trail = S_ISDIR(file->mode) ? "/" : "";
2854: } else
2855: root = dir = slash = name = trail = "";
2856: rprintf(FINFO,
2857: "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2858: who, i + flist->ndx_start,
2859: root, dir, slash, name, trail,
2860: (int)file->mode, (double)F_LENGTH(file),
2861: uidbuf, gidbuf, file->flags);
2862: }
2863: }
2864:
2865: enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2866: enum fnc_type { t_PATH, t_ITEM };
2867:
2868: static int found_prefix;
2869:
2870: /* Compare the names of two file_struct entities, similar to how strcmp()
2871: * would do if it were operating on the joined strings.
2872: *
2873: * Some differences beginning with protocol_version 29: (1) directory names
2874: * are compared with an assumed trailing slash so that they compare in a
2875: * way that would cause them to sort immediately prior to any content they
2876: * may have; (2) a directory of any name compares after a non-directory of
2877: * any name at the same depth; (3) a directory with name "." compares prior
2878: * to anything else. These changes mean that a directory and a non-dir
2879: * with the same name will not compare as equal (protocol_version >= 29).
2880: *
2881: * The dirname component can be an empty string, but the basename component
2882: * cannot (and never is in the current codebase). The basename component
2883: * may be NULL (for a removed item), in which case it is considered to be
2884: * after any existing item. */
2885: int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2886: {
2887: int dif;
2888: const uchar *c1, *c2;
2889: enum fnc_state state1, state2;
2890: enum fnc_type type1, type2;
2891: enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2892:
2893: if (!f1 || !F_IS_ACTIVE(f1)) {
2894: if (!f2 || !F_IS_ACTIVE(f2))
2895: return 0;
2896: return -1;
2897: }
2898: if (!f2 || !F_IS_ACTIVE(f2))
2899: return 1;
2900:
2901: c1 = (uchar*)f1->dirname;
2902: c2 = (uchar*)f2->dirname;
2903: if (c1 == c2)
2904: c1 = c2 = NULL;
2905: if (!c1) {
2906: type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2907: c1 = (const uchar*)f1->basename;
2908: if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2909: type1 = t_ITEM;
2910: state1 = s_TRAILING;
2911: c1 = (uchar*)"";
2912: } else
2913: state1 = s_BASE;
2914: } else {
2915: type1 = t_path;
2916: state1 = s_DIR;
2917: }
2918: if (!c2) {
2919: type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2920: c2 = (const uchar*)f2->basename;
2921: if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2922: type2 = t_ITEM;
2923: state2 = s_TRAILING;
2924: c2 = (uchar*)"";
2925: } else
2926: state2 = s_BASE;
2927: } else {
2928: type2 = t_path;
2929: state2 = s_DIR;
2930: }
2931:
2932: if (type1 != type2)
2933: return type1 == t_PATH ? 1 : -1;
2934:
2935: do {
2936: if (!*c1) {
2937: switch (state1) {
2938: case s_DIR:
2939: state1 = s_SLASH;
2940: c1 = (uchar*)"/";
2941: break;
2942: case s_SLASH:
2943: type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2944: c1 = (const uchar*)f1->basename;
2945: if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2946: type1 = t_ITEM;
2947: state1 = s_TRAILING;
2948: c1 = (uchar*)"";
2949: } else
2950: state1 = s_BASE;
2951: break;
2952: case s_BASE:
2953: state1 = s_TRAILING;
2954: if (type1 == t_PATH) {
2955: c1 = (uchar*)"/";
2956: break;
2957: }
2958: /* FALL THROUGH */
2959: case s_TRAILING:
2960: type1 = t_ITEM;
2961: break;
2962: }
2963: if (*c2 && type1 != type2)
2964: return type1 == t_PATH ? 1 : -1;
2965: }
2966: if (!*c2) {
2967: switch (state2) {
2968: case s_DIR:
2969: state2 = s_SLASH;
2970: c2 = (uchar*)"/";
2971: break;
2972: case s_SLASH:
2973: type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2974: c2 = (const uchar*)f2->basename;
2975: if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2976: type2 = t_ITEM;
2977: state2 = s_TRAILING;
2978: c2 = (uchar*)"";
2979: } else
2980: state2 = s_BASE;
2981: break;
2982: case s_BASE:
2983: state2 = s_TRAILING;
2984: if (type2 == t_PATH) {
2985: c2 = (uchar*)"/";
2986: break;
2987: }
2988: /* FALL THROUGH */
2989: case s_TRAILING:
2990: found_prefix = 1;
2991: if (!*c1)
2992: return 0;
2993: type2 = t_ITEM;
2994: break;
2995: }
2996: if (type1 != type2)
2997: return type1 == t_PATH ? 1 : -1;
2998: }
2999: } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3000:
3001: return dif;
3002: }
3003:
3004: /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3005: * not match if f2's basename is not an exact match of a path element in f1.
3006: * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3007: int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3008: {
3009: found_prefix = 0;
3010: f_name_cmp(f1, f2);
3011: return found_prefix;
3012: }
3013:
3014: char *f_name_buf(void)
3015: {
3016: static char names[5][MAXPATHLEN];
3017: static unsigned int n;
3018:
3019: n = (n + 1) % (sizeof names / sizeof names[0]);
3020:
3021: return names[n];
3022: }
3023:
3024: /* Return a copy of the full filename of a flist entry, using the indicated
3025: * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3026: * done because we checked the size when creating the file_struct entry.
3027: */
3028: char *f_name(const struct file_struct *f, char *fbuf)
3029: {
3030: if (!f || !F_IS_ACTIVE(f))
3031: return NULL;
3032:
3033: if (!fbuf)
3034: fbuf = f_name_buf();
3035:
3036: if (f->dirname) {
3037: int len = strlen(f->dirname);
3038: memcpy(fbuf, f->dirname, len);
3039: fbuf[len] = '/';
3040: strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3041: } else
3042: strlcpy(fbuf, f->basename, MAXPATHLEN);
3043:
3044: return fbuf;
3045: }
3046:
3047: /* Do a non-recursive scan of the named directory, possibly ignoring all
3048: * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3049: * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3050: * buffer (the functions we call will append names onto the end, but the old
3051: * dir value will be restored on exit). */
3052: struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3053: {
3054: struct file_list *dirlist;
3055: char dirbuf[MAXPATHLEN];
3056: int save_recurse = recurse;
3057: int save_xfer_dirs = xfer_dirs;
3058: int save_prune_empty_dirs = prune_empty_dirs;
3059: int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3060:
3061: if (dlen < 0) {
3062: dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3063: if (dlen >= MAXPATHLEN)
3064: return NULL;
3065: dirname = dirbuf;
3066: }
3067:
3068: dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3069:
3070: recurse = 0;
3071: xfer_dirs = 1;
3072: send_directory(senddir_fd, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3073: xfer_dirs = save_xfer_dirs;
3074: recurse = save_recurse;
3075: if (do_progress)
3076: flist_count_offset += dirlist->used;
3077:
3078: prune_empty_dirs = 0;
3079: dirlist->sorted = dirlist->files;
3080: flist_sort_and_clean(dirlist, 0);
3081: prune_empty_dirs = save_prune_empty_dirs;
3082:
3083: if (verbose > 3)
3084: output_flist(dirlist);
3085:
3086: return dirlist;
3087: }