![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to rsync.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / rsync|
Return to rsync.c CVS log | Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / rsync |
1.1 misho 1: /*
2: * Routines common to more than one of the rsync processes.
3: *
4: * Copyright (C) 1996 Andrew Tridgell
5: * Copyright (C) 1996 Paul Mackerras
6: * Copyright (C) 2003-2009 Wayne Davison
7: *
8: * This program is free software; you can redistribute it and/or modify
9: * it under the terms of the GNU General Public License as published by
10: * the Free Software Foundation; either version 3 of the License, or
11: * (at your option) any later version.
12: *
13: * This program is distributed in the hope that it will be useful,
14: * but WITHOUT ANY WARRANTY; without even the implied warranty of
15: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: * GNU General Public License for more details.
17: *
18: * You should have received a copy of the GNU General Public License along
19: * with this program; if not, visit the http://fsf.org website.
20: */
21:
22: #include "rsync.h"
23: #include "ifuncs.h"
24: #if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
25: #include <libcharset.h>
26: #elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
27: #include <langinfo.h>
28: #endif
29:
30: extern int verbose;
31: extern int dry_run;
32: extern int preserve_acls;
33: extern int preserve_xattrs;
34: extern int preserve_perms;
35: extern int preserve_executability;
36: extern int preserve_times;
37: extern int am_root;
38: extern int am_server;
39: extern int am_sender;
40: extern int am_receiver;
41: extern int am_generator;
42: extern int am_starting_up;
43: extern int allow_8bit_chars;
44: extern int protocol_version;
45: extern int inc_recurse;
46: extern int inplace;
47: extern int flist_eof;
48: extern int keep_dirlinks;
49: extern int make_backups;
50: extern struct file_list *cur_flist, *first_flist, *dir_flist;
51: extern struct chmod_mode_struct *daemon_chmod_modes;
52: #ifdef ICONV_OPTION
53: extern char *iconv_opt;
54: #endif
55:
56: #ifdef ICONV_CONST
57: iconv_t ic_chck = (iconv_t)-1;
58: # ifdef ICONV_OPTION
59: iconv_t ic_send = (iconv_t)-1, ic_recv = (iconv_t)-1;
60: # endif
61:
62: static const char *default_charset(void)
63: {
64: # if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
65: return locale_charset();
66: # elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
67: return nl_langinfo(CODESET);
68: # else
69: return ""; /* Works with (at the very least) gnu iconv... */
70: # endif
71: }
72:
73: void setup_iconv(void)
74: {
75: const char *defset = default_charset();
76: # ifdef ICONV_OPTION
77: const char *charset;
78: char *cp;
79: # endif
80:
81: if (!am_server && !allow_8bit_chars) {
82: /* It's OK if this fails... */
83: ic_chck = iconv_open(defset, defset);
84:
85: if (verbose > 3) {
86: if (ic_chck == (iconv_t)-1) {
87: rprintf(FINFO,
88: "note: iconv_open(\"%s\", \"%s\") failed (%d)"
89: " -- using isprint() instead of iconv().\n",
90: defset, defset, errno);
91: } else {
92: rprintf(FINFO,
93: "note: iconv_open(\"%s\", \"%s\") succeeded.\n",
94: defset, defset);
95: }
96: }
97: }
98:
99: # ifdef ICONV_OPTION
100: if (!iconv_opt)
101: return;
102:
103: if ((cp = strchr(iconv_opt, ',')) != NULL) {
104: if (am_server) /* A local transfer needs this. */
105: iconv_opt = cp + 1;
106: else
107: *cp = '\0';
108: }
109:
110: if (!*iconv_opt || (*iconv_opt == '.' && iconv_opt[1] == '\0'))
111: charset = defset;
112: else
113: charset = iconv_opt;
114:
115: if ((ic_send = iconv_open(UTF8_CHARSET, charset)) == (iconv_t)-1) {
116: rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
117: UTF8_CHARSET, charset);
118: exit_cleanup(RERR_UNSUPPORTED);
119: }
120:
121: if ((ic_recv = iconv_open(charset, UTF8_CHARSET)) == (iconv_t)-1) {
122: rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
123: charset, UTF8_CHARSET);
124: exit_cleanup(RERR_UNSUPPORTED);
125: }
126:
127: if (verbose > 1) {
128: rprintf(FINFO, "%s charset: %s\n",
129: am_server ? "server" : "client",
130: *charset ? charset : "[LOCALE]");
131: }
132: # endif
133: }
134:
135: /* This function converts the characters in the "in" xbuf into characters
136: * in the "out" xbuf. The "len" of the "in" xbuf is used starting from its
137: * "pos". The "size" of the "out" xbuf restricts how many characters can be
138: * stored, starting at its "pos+len" position. Note that the last byte of
139: * the buffer is never used, which reserves space for a terminating '\0'.
140: * We return a 0 on success or a -1 on error. An error also sets errno to
141: * E2BIG, EILSEQ, or EINVAL (see below); otherwise errno will be set to 0.
142: * The "in" xbuf is altered to update "pos" and "len". The "out" xbuf has
143: * data appended, and its "len" incremented. If ICB_EXPAND_OUT is set in
144: * "flags", the "out" xbuf will also be allocated if empty, and expanded if
145: * too small (so E2BIG will not be returned). If ICB_INCLUDE_BAD is set in
146: * "flags", any badly-encoded chars are included verbatim in the "out" xbuf,
147: * so EILSEQ will not be returned. Likewise for ICB_INCLUDE_INCOMPLETE with
148: * respect to an incomplete multi-byte char at the end, which ensures that
149: * EINVAL is not returned. Anytime "in.pos" is 0 we will reset the iconv()
150: * state prior to processing the characters. */
151: int iconvbufs(iconv_t ic, xbuf *in, xbuf *out, int flags)
152: {
153: ICONV_CONST char *ibuf;
154: size_t icnt, ocnt;
155: char *obuf;
156:
157: if (!out->size && flags & ICB_EXPAND_OUT)
158: alloc_xbuf(out, 1024);
159:
160: if (!in->pos)
161: iconv(ic, NULL, 0, NULL, 0);
162:
163: ibuf = in->buf + in->pos;
164: icnt = in->len;
165:
166: obuf = out->buf + (out->pos + out->len);
167: ocnt = out->size - (out->pos + out->len) - 1;
168:
169: while (icnt) {
170: while (iconv(ic, &ibuf, &icnt, &obuf, &ocnt) == (size_t)-1) {
171: if (errno == EINTR)
172: continue;
173: if (errno == EINVAL) {
174: if (!(flags & ICB_INCLUDE_INCOMPLETE))
175: goto finish;
176: } else if (errno == EILSEQ) {
177: if (!(flags & ICB_INCLUDE_BAD))
178: goto finish;
179: } else {
180: size_t opos = obuf - out->buf;
181: if (!(flags & ICB_EXPAND_OUT)) {
182: errno = E2BIG;
183: goto finish;
184: }
185: realloc_xbuf(out, out->size + 1024);
186: obuf = out->buf + opos;
187: ocnt += 1024;
188: continue;
189: }
190: *obuf++ = *ibuf++;
191: ocnt--, icnt--;
192: }
193: }
194:
195: errno = 0;
196:
197: finish:
198: in->len = icnt;
199: in->pos = ibuf - in->buf;
200: out->len = obuf - out->buf - out->pos;
201:
202: return errno ? -1 : 0;
203: }
204: #endif
205:
206: void send_protected_args(int fd, char *args[])
207: {
208: int i;
209: #ifdef ICONV_OPTION
210: int convert = ic_send != (iconv_t)-1;
211: xbuf outbuf, inbuf;
212:
213: if (convert)
214: alloc_xbuf(&outbuf, 1024);
215: #endif
216:
217: for (i = 0; args[i]; i++) {} /* find first NULL */
218: args[i] = "rsync"; /* set a new arg0 */
219: if (verbose > 1)
220: print_child_argv("protected args:", args + i + 1);
221: do {
222: if (!args[i][0])
223: write_buf(fd, ".", 2);
224: #ifdef ICONV_OPTION
225: else if (convert) {
226: INIT_XBUF_STRLEN(inbuf, args[i]);
227: iconvbufs(ic_send, &inbuf, &outbuf,
228: ICB_EXPAND_OUT | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE);
229: outbuf.buf[outbuf.len] = '\0';
230: write_buf(fd, outbuf.buf, outbuf.len + 1);
231: outbuf.len = 0;
232: }
233: #endif
234: else
235: write_buf(fd, args[i], strlen(args[i]) + 1);
236: } while (args[++i]);
237: write_byte(fd, 0);
238:
239: #ifdef ICONV_OPTION
240: if (convert)
241: free(outbuf.buf);
242: #endif
243: }
244:
245: int read_ndx_and_attrs(int f_in, int *iflag_ptr, uchar *type_ptr,
246: char *buf, int *len_ptr)
247: {
248: int len, iflags = 0;
249: struct file_list *flist;
250: uchar fnamecmp_type = FNAMECMP_FNAME;
251: int ndx, save_verbose = verbose;
252:
253: read_loop:
254: while (1) {
255: ndx = read_ndx(f_in);
256:
257: if (ndx >= 0)
258: break;
259: if (ndx == NDX_DONE)
260: return ndx;
261: if (!inc_recurse || am_sender) {
262: int last;
263: if (first_flist)
264: last = first_flist->prev->ndx_start + first_flist->prev->used - 1;
265: else
266: last = -1;
267: rprintf(FERROR,
268: "Invalid file index: %d (%d - %d) [%s]\n",
269: ndx, NDX_DONE, last, who_am_i());
270: exit_cleanup(RERR_PROTOCOL);
271: }
272: if (ndx == NDX_FLIST_EOF) {
273: flist_eof = 1;
274: send_msg(MSG_FLIST_EOF, "", 0, 0);
275: continue;
276: }
277: ndx = NDX_FLIST_OFFSET - ndx;
278: if (ndx < 0 || ndx >= dir_flist->used) {
279: ndx = NDX_FLIST_OFFSET - ndx;
280: rprintf(FERROR,
281: "Invalid dir index: %d (%d - %d) [%s]\n",
282: ndx, NDX_FLIST_OFFSET,
283: NDX_FLIST_OFFSET - dir_flist->used + 1,
284: who_am_i());
285: exit_cleanup(RERR_PROTOCOL);
286: }
287:
288: /* Send everything read from f_in to msg_fd_out. */
289: if (verbose > 3) {
290: rprintf(FINFO, "[%s] receiving flist for dir %d\n",
291: who_am_i(), ndx);
292: }
293: verbose = 0;
294: send_msg_int(MSG_FLIST, ndx);
295: start_flist_forward(f_in);
296: flist = recv_file_list(f_in);
297: flist->parent_ndx = ndx;
298: stop_flist_forward();
299: verbose = save_verbose;
300: }
301:
302: iflags = protocol_version >= 29 ? read_shortint(f_in)
303: : ITEM_TRANSFER | ITEM_MISSING_DATA;
304:
305: /* Support the protocol-29 keep-alive style. */
306: if (protocol_version < 30 && ndx == cur_flist->used && iflags == ITEM_IS_NEW) {
307: if (am_sender)
308: maybe_send_keepalive();
309: goto read_loop;
310: }
311:
312: cur_flist = flist_for_ndx(ndx, "read_ndx_and_attrs");
313:
314: if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
315: fnamecmp_type = read_byte(f_in);
316: *type_ptr = fnamecmp_type;
317:
318: if (iflags & ITEM_XNAME_FOLLOWS) {
319: if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
320: exit_cleanup(RERR_PROTOCOL);
321: } else {
322: *buf = '\0';
323: len = -1;
324: }
325: *len_ptr = len;
326:
327: if (iflags & ITEM_TRANSFER) {
328: int i = ndx - cur_flist->ndx_start;
329: if (i < 0 || !S_ISREG(cur_flist->files[i]->mode)) {
330: rprintf(FERROR,
331: "received request to transfer non-regular file: %d [%s]\n",
332: ndx, who_am_i());
333: exit_cleanup(RERR_PROTOCOL);
334: }
335: }
336:
337: *iflag_ptr = iflags;
338: return ndx;
339: }
340:
341: /*
342: free a sums struct
343: */
344: void free_sums(struct sum_struct *s)
345: {
346: if (s->sums) free(s->sums);
347: free(s);
348: }
349:
350: /* This is only called when we aren't preserving permissions. Figure out what
351: * the permissions should be and return them merged back into the mode. */
352: mode_t dest_mode(mode_t flist_mode, mode_t stat_mode, int dflt_perms,
353: int exists)
354: {
355: int new_mode;
356: /* If the file already exists, we'll return the local permissions,
357: * possibly tweaked by the --executability option. */
358: if (exists) {
359: new_mode = (flist_mode & ~CHMOD_BITS) | (stat_mode & CHMOD_BITS);
360: if (preserve_executability && S_ISREG(flist_mode)) {
361: /* If the source file is executable, grant execute
362: * rights to everyone who can read, but ONLY if the
363: * file isn't already executable. */
364: if (!(flist_mode & 0111))
365: new_mode &= ~0111;
366: else if (!(stat_mode & 0111))
367: new_mode |= (new_mode & 0444) >> 2;
368: }
369: } else {
370: /* Apply destination default permissions and turn
371: * off special permissions. */
372: new_mode = flist_mode & (~CHMOD_BITS | dflt_perms);
373: }
374: return new_mode;
375: }
376:
377: int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
378: const char *fnamecmp, int flags)
379: {
380: int updated = 0;
381: stat_x sx2;
382: int change_uid, change_gid;
383: mode_t new_mode = file->mode;
384: int inherit;
385:
386: if (!sxp) {
387: if (dry_run)
388: return 1;
389: if (link_stat(fname, &sx2.st, 0) < 0) {
390: rsyserr(FERROR_XFER, errno, "stat %s failed",
391: full_fname(fname));
392: return 0;
393: }
394: #ifdef SUPPORT_ACLS
395: sx2.acc_acl = sx2.def_acl = NULL;
396: #endif
397: #ifdef SUPPORT_XATTRS
398: sx2.xattr = NULL;
399: #endif
400: sxp = &sx2;
401: inherit = !preserve_perms;
402: } else
403: inherit = !preserve_perms && file->flags & FLAG_DIR_CREATED;
404:
405: if (inherit && S_ISDIR(new_mode) && sxp->st.st_mode & S_ISGID) {
406: /* We just created this directory and its setgid
407: * bit is on, so make sure it stays on. */
408: new_mode |= S_ISGID;
409: }
410:
411: if (daemon_chmod_modes && !S_ISLNK(new_mode))
412: new_mode = tweak_mode(new_mode, daemon_chmod_modes);
413:
414: #ifdef SUPPORT_ACLS
415: if (preserve_acls && !S_ISLNK(file->mode) && !ACL_READY(*sxp))
416: get_acl(fname, sxp);
417: #endif
418:
419: #ifdef SUPPORT_XATTRS
420: if (am_root < 0)
421: set_stat_xattr(fname, file, new_mode);
422: if (preserve_xattrs && fnamecmp)
423: set_xattr(fname, file, fnamecmp, sxp);
424: #endif
425:
426: if (!preserve_times
427: || (!(preserve_times & PRESERVE_DIR_TIMES) && S_ISDIR(sxp->st.st_mode))
428: || (!(preserve_times & PRESERVE_LINK_TIMES) && S_ISLNK(sxp->st.st_mode)))
429: flags |= ATTRS_SKIP_MTIME;
430: if (!(flags & ATTRS_SKIP_MTIME)
431: && cmp_time(sxp->st.st_mtime, file->modtime) != 0) {
432: int ret = set_modtime(fname, file->modtime, sxp->st.st_mode);
433: if (ret < 0) {
434: rsyserr(FERROR_XFER, errno, "failed to set times on %s",
435: full_fname(fname));
436: goto cleanup;
437: }
438: if (ret == 0) /* ret == 1 if symlink could not be set */
439: updated = 1;
440: else
441: file->flags |= FLAG_TIME_FAILED;
442: }
443:
444: change_uid = am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file);
445: change_gid = gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
446: && sxp->st.st_gid != (gid_t)F_GROUP(file);
447: #ifndef CAN_CHOWN_SYMLINK
448: if (S_ISLNK(sxp->st.st_mode)) {
449: ;
450: } else
451: #endif
452: if (change_uid || change_gid) {
453: if (verbose > 2) {
454: if (change_uid) {
455: rprintf(FINFO,
456: "set uid of %s from %u to %u\n",
457: fname, (unsigned)sxp->st.st_uid, F_OWNER(file));
458: }
459: if (change_gid) {
460: rprintf(FINFO,
461: "set gid of %s from %u to %u\n",
462: fname, (unsigned)sxp->st.st_gid, F_GROUP(file));
463: }
464: }
465: if (am_root >= 0) {
466: uid_t uid = change_uid ? (uid_t)F_OWNER(file) : sxp->st.st_uid;
467: gid_t gid = change_gid ? (gid_t)F_GROUP(file) : sxp->st.st_gid;
468: if (do_lchown(fname, uid, gid) != 0) {
469: /* We shouldn't have attempted to change uid
470: * or gid unless have the privilege. */
471: rsyserr(FERROR_XFER, errno, "%s %s failed",
472: change_uid ? "chown" : "chgrp",
473: full_fname(fname));
474: goto cleanup;
475: }
476: if (uid == (uid_t)-1 && sxp->st.st_uid != (uid_t)-1)
477: rprintf(FERROR_XFER, "uid 4294967295 (-1) is impossible to set on %s\n", full_fname(fname));
478: if (gid == (gid_t)-1 && sxp->st.st_gid != (gid_t)-1)
479: rprintf(FERROR_XFER, "gid 4294967295 (-1) is impossible to set on %s\n", full_fname(fname));
480: /* A lchown had been done, so we need to re-stat if
481: * the destination had the setuid or setgid bits set
482: * (due to the side effect of the chown call). */
483: if (sxp->st.st_mode & (S_ISUID | S_ISGID)) {
484: link_stat(fname, &sxp->st,
485: keep_dirlinks && S_ISDIR(sxp->st.st_mode));
486: }
487: }
488: updated = 1;
489: }
490:
491: #ifdef SUPPORT_ACLS
492: /* It's OK to call set_acl() now, even for a dir, as the generator
493: * will enable owner-writability using chmod, if necessary.
494: *
495: * If set_acl() changes permission bits in the process of setting
496: * an access ACL, it changes sxp->st.st_mode so we know whether we
497: * need to chmod(). */
498: if (preserve_acls && !S_ISLNK(new_mode)) {
499: if (set_acl(fname, file, sxp, new_mode) > 0)
500: updated = 1;
501: }
502: #endif
503:
504: #ifdef HAVE_CHMOD
505: if (!BITS_EQUAL(sxp->st.st_mode, new_mode, CHMOD_BITS)) {
506: int ret = am_root < 0 ? 0 : do_chmod(fname, new_mode);
507: if (ret < 0) {
508: rsyserr(FERROR_XFER, errno,
509: "failed to set permissions on %s",
510: full_fname(fname));
511: goto cleanup;
512: }
513: if (ret == 0) /* ret == 1 if symlink could not be set */
514: updated = 1;
515: }
516: #endif
517:
518: if (verbose > 1 && flags & ATTRS_REPORT) {
519: if (updated)
520: rprintf(FCLIENT, "%s\n", fname);
521: else
522: rprintf(FCLIENT, "%s is uptodate\n", fname);
523: }
524: cleanup:
525: if (sxp == &sx2) {
526: #ifdef SUPPORT_ACLS
527: if (preserve_acls)
528: free_acl(&sx2);
529: #endif
530: #ifdef SUPPORT_XATTRS
531: if (preserve_xattrs)
532: free_xattr(&sx2);
533: #endif
534: }
535: return updated;
536: }
537:
538: RETSIGTYPE sig_int(UNUSED(int val))
539: {
540: /* KLUGE: if the user hits Ctrl-C while ssh is prompting
541: * for a password, then our cleanup's sending of a SIGUSR1
542: * signal to all our children may kill ssh before it has a
543: * chance to restore the tty settings (i.e. turn echo back
544: * on). By sleeping for a short time, ssh gets a bigger
545: * chance to do the right thing. If child processes are
546: * not ssh waiting for a password, then this tiny delay
547: * shouldn't hurt anything. */
548: msleep(400);
549: exit_cleanup(RERR_SIGNAL);
550: }
551:
552: /* Finish off a file transfer: renaming the file and setting the file's
553: * attributes (e.g. permissions, ownership, etc.). If the robust_rename()
554: * call is forced to copy the temp file and partialptr is both non-NULL and
555: * not an absolute path, we stage the file into the partial-dir and then
556: * rename it into place. This returns 1 on succcess or 0 on failure. */
557: int finish_transfer(const char *fname, const char *fnametmp,
558: const char *fnamecmp, const char *partialptr,
559: struct file_struct *file, int ok_to_set_time,
560: int overwriting_basis)
561: {
562: int ret;
563: const char *temp_copy_name = partialptr && *partialptr != '/' ? partialptr : NULL;
564:
565: if (inplace) {
566: if (verbose > 2)
567: rprintf(FINFO, "finishing %s\n", fname);
568: fnametmp = fname;
569: goto do_set_file_attrs;
570: }
571:
572: if (make_backups > 0 && overwriting_basis) {
573: if (!make_backup(fname))
574: return 1;
575: if (fnamecmp == fname)
576: fnamecmp = get_backup_name(fname);
577: }
578:
579: /* Change permissions before putting the file into place. */
580: set_file_attrs(fnametmp, file, NULL, fnamecmp,
581: ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
582:
583: /* move tmp file over real file */
584: if (verbose > 2)
585: rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
586: ret = robust_rename(fnametmp, fname, temp_copy_name,
587: file->mode & INITACCESSPERMS);
588: if (ret < 0) {
589: rsyserr(FERROR_XFER, errno, "%s %s -> \"%s\"",
590: ret == -2 ? "copy" : "rename",
591: full_fname(fnametmp), fname);
592: if (!partialptr || (ret == -2 && temp_copy_name)
593: || robust_rename(fnametmp, partialptr, NULL,
594: file->mode & INITACCESSPERMS) < 0)
595: do_unlink(fnametmp);
596: return 0;
597: }
598: if (ret == 0) {
599: /* The file was moved into place (not copied), so it's done. */
600: return 1;
601: }
602: /* The file was copied, so tweak the perms of the copied file. If it
603: * was copied to partialptr, move it into its final destination. */
604: fnametmp = temp_copy_name ? temp_copy_name : fname;
605:
606: do_set_file_attrs:
607: set_file_attrs(fnametmp, file, NULL, fnamecmp,
608: ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
609:
610: if (temp_copy_name) {
611: if (do_rename(fnametmp, fname) < 0) {
612: rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\"",
613: full_fname(fnametmp), fname);
614: return 0;
615: }
616: handle_partial_dir(temp_copy_name, PDIR_DELETE);
617: }
618: return 1;
619: }
620:
621: struct file_list *flist_for_ndx(int ndx, const char *fatal_error_loc)
622: {
623: struct file_list *flist = cur_flist;
624:
625: if (!flist && !(flist = first_flist))
626: goto not_found;
627:
628: while (ndx < flist->ndx_start-1) {
629: if (flist == first_flist)
630: goto not_found;
631: flist = flist->prev;
632: }
633: while (ndx >= flist->ndx_start + flist->used) {
634: if (!(flist = flist->next))
635: goto not_found;
636: }
637: return flist;
638:
639: not_found:
640: if (fatal_error_loc) {
641: int first, last;
642: if (first_flist) {
643: first = first_flist->ndx_start - 1;
644: last = first_flist->prev->ndx_start + first_flist->prev->used - 1;
645: } else {
646: first = 0;
647: last = -1;
648: }
649: rprintf(FERROR,
650: "File-list index %d not in %d - %d (%s) [%s]\n",
651: ndx, first, last, fatal_error_loc, who_am_i());
652: exit_cleanup(RERR_PROTOCOL);
653: }
654: return NULL;
655: }
656:
657: const char *who_am_i(void)
658: {
659: if (am_starting_up)
660: return am_server ? "server" : "client";
661: return am_sender ? "sender"
662: : am_generator ? "generator"
663: : am_receiver ? "receiver"
664: : "Receiver"; /* pre-forked receiver */
665: }