/*
- Copyright (C) Andrew Tridgell 1996
- Copyright (C) Paul Mackerras 1996
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* this file contains code used by more than one part of the rsync
- process */
+ * Routines common to more than one of the rsync processes.
+ *
+ * Copyright (C) 1996 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2003-2007 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, visit the http://fsf.org website.
+ */
#include "rsync.h"
+#include "ifuncs.h"
+#if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
+#include <libcharset.h>
+#elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
+#include <langinfo.h>
+#endif
extern int verbose;
extern int dry_run;
-extern int daemon_log_format_has_i;
+extern int preserve_acls;
+extern int preserve_xattrs;
+extern int preserve_perms;
+extern int preserve_executability;
extern int preserve_times;
-extern int omit_dir_times;
extern int am_root;
extern int am_server;
extern int am_sender;
extern int am_generator;
extern int am_starting_up;
-extern int preserve_uid;
-extern int preserve_gid;
+extern int allow_8bit_chars;
+extern int protocol_version;
+extern int uid_ndx;
+extern int gid_ndx;
+extern int inc_recurse;
extern int inplace;
+extern int flist_eof;
extern int keep_dirlinks;
extern int make_backups;
-extern struct stats stats;
+extern struct file_list *cur_flist, *first_flist, *dir_flist;
+extern struct chmod_mode_struct *daemon_chmod_modes;
+#ifdef ICONV_OPTION
+extern char *iconv_opt;
+#endif
+
+#ifdef ICONV_CONST
+iconv_t ic_chck = (iconv_t)-1;
+# ifdef ICONV_OPTION
+iconv_t ic_send = (iconv_t)-1, ic_recv = (iconv_t)-1;
+# endif
+
+static const char *default_charset(void)
+{
+# if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
+ return locale_charset();
+# elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
+ return nl_langinfo(CODESET);
+# else
+ return ""; /* Works with (at the very least) gnu iconv... */
+# endif
+}
+
+void setup_iconv(void)
+{
+ const char *defset = default_charset();
+# ifdef ICONV_OPTION
+ const char *charset;
+ char *cp;
+# endif
+
+ if (!am_server && !allow_8bit_chars) {
+
+ /* It's OK if this fails... */
+ ic_chck = iconv_open(defset, defset);
+
+ if (verbose > 3) {
+ if (ic_chck == (iconv_t)-1) {
+ rprintf(FINFO,
+ "note: iconv_open(\"%s\", \"%s\") failed (%d)"
+ " -- using isprint() instead of iconv().\n",
+ defset, defset, errno);
+ } else {
+ rprintf(FINFO,
+ "note: iconv_open(\"%s\", \"%s\") succeeded.\n",
+ defset, defset);
+ }
+ }
+ }
+
+# ifdef ICONV_OPTION
+ if (!iconv_opt)
+ return;
+
+ if ((cp = strchr(iconv_opt, ',')) != NULL) {
+ if (am_server) /* A local transfer needs this. */
+ iconv_opt = cp + 1;
+ else
+ *cp = '\0';
+ }
+
+ if (!*iconv_opt || (*iconv_opt == '.' && iconv_opt[1] == '\0'))
+ charset = defset;
+ else
+ charset = iconv_opt;
+
+ if ((ic_send = iconv_open(UTF8_CHARSET, charset)) == (iconv_t)-1) {
+ rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
+ UTF8_CHARSET, charset);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+
+ if ((ic_recv = iconv_open(charset, UTF8_CHARSET)) == (iconv_t)-1) {
+ rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
+ charset, UTF8_CHARSET);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+
+ if (verbose > 1) {
+ rprintf(FINFO, "%s charset: %s\n",
+ am_server ? "server" : "client",
+ *charset ? charset : "[LOCALE]");
+ }
+# endif
+}
+
+/* This function converts the characters in the "in" xbuf into characters
+ * in the "out" xbuf. The "len" of the "in" xbuf is used starting from its
+ * "pos". The "size" of the "out" xbuf restricts how many characters can be
+ * stored, starting at its "pos+len" position. Note that the last byte of
+ * the buffer is never used, which reserves space for a terminating '\0'.
+ * We return a 0 on success or a -1 on error. An error also sets errno to
+ * E2BIG, EILSEQ, or EINVAL (see below); otherwise errno will be set to 0.
+ * The "in" xbuf is altered to update "pos" and "len". The "out" xbuf has
+ * data appended, and its "len" incremented. If ICB_EXPAND_OUT is set in
+ * "flags", the "out" xbuf will also be allocated if empty, and expanded if
+ * too small (so E2BIG will not be returned). If ICB_INCLUDE_BAD is set in
+ * "flags", any badly-encoded chars are included verbatim in the "out" xbuf,
+ * so EILSEQ will not be returned. Likewise for ICB_INCLUDE_INCOMPLETE with
+ * respect to an incomplete multi-byte char at the end, which ensures that
+ * EINVAL is not returned. Anytime "in.pos" is 0 we will reset the iconv()
+ * state prior to processing the characters. */
+int iconvbufs(iconv_t ic, xbuf *in, xbuf *out, int flags)
+{
+ ICONV_CONST char *ibuf;
+ size_t icnt, ocnt;
+ char *obuf;
+
+ if (!out->size && flags & ICB_EXPAND_OUT)
+ alloc_xbuf(out, 1024);
+
+ if (!in->pos)
+ iconv(ic, NULL, 0, NULL, 0);
+
+ ibuf = in->buf + in->pos;
+ icnt = in->len;
+
+ obuf = out->buf + (out->pos + out->len);
+ ocnt = out->size - (out->pos + out->len) - 1;
+
+ while (icnt) {
+ while (iconv(ic, &ibuf, &icnt, &obuf, &ocnt) == (size_t)-1) {
+ if (errno == EINTR)
+ continue;
+ if (errno == EINVAL) {
+ if (!(flags & ICB_INCLUDE_INCOMPLETE))
+ goto finish;
+ } else if (errno == EILSEQ) {
+ if (!(flags & ICB_INCLUDE_BAD))
+ goto finish;
+ } else {
+ size_t opos = obuf - out->buf;
+ if (!(flags & ICB_EXPAND_OUT)) {
+ errno = E2BIG;
+ goto finish;
+ }
+ realloc_xbuf(out, out->size + 1024);
+ obuf = out->buf + opos;
+ ocnt += 1024;
+ continue;
+ }
+ *obuf++ = *ibuf++;
+ ocnt--, icnt--;
+ }
+ }
+
+ errno = 0;
+
+ finish:
+ in->len = icnt;
+ in->pos = ibuf - in->buf;
+ out->len = obuf - out->buf - out->pos;
+
+ return errno ? -1 : 0;
+}
+#endif
+
+int read_ndx_and_attrs(int f_in, int *iflag_ptr, uchar *type_ptr,
+ char *buf, int *len_ptr)
+{
+ int len, iflags = 0;
+ struct file_list *flist;
+ uchar fnamecmp_type = FNAMECMP_FNAME;
+ int ndx, save_verbose = verbose;
+
+ read_loop:
+ while (1) {
+ ndx = read_ndx(f_in);
+
+ if (ndx >= 0)
+ break;
+ if (ndx == NDX_DONE)
+ return ndx;
+ if (!inc_recurse || am_sender)
+ goto invalid_ndx;
+ if (ndx == NDX_FLIST_EOF) {
+ flist_eof = 1;
+ send_msg(MSG_FLIST_EOF, "", 0, 0);
+ continue;
+ }
+ ndx = NDX_FLIST_OFFSET - ndx;
+ if (ndx < 0 || ndx >= dir_flist->used) {
+ ndx = NDX_FLIST_OFFSET - ndx;
+ rprintf(FERROR,
+ "[%s] Invalid dir index: %d (%d - %d)\n",
+ who_am_i(), ndx, NDX_FLIST_OFFSET,
+ NDX_FLIST_OFFSET - dir_flist->used + 1);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+
+ /* Send everything read from f_in to msg_fd_out. */
+ if (verbose > 3) {
+ rprintf(FINFO, "[%s] receiving flist for dir %d\n",
+ who_am_i(), ndx);
+ }
+ verbose = 0;
+ send_msg_int(MSG_FLIST, ndx);
+ start_flist_forward(f_in);
+ flist = recv_file_list(f_in);
+ flist->parent_ndx = ndx;
+ stop_flist_forward();
+ verbose = save_verbose;
+ }
+
+ iflags = protocol_version >= 29 ? read_shortint(f_in)
+ : ITEM_TRANSFER | ITEM_MISSING_DATA;
+
+ /* Honor the old-style keep-alive indicator. */
+ if (protocol_version < 30
+ && ndx == cur_flist->used && iflags == ITEM_IS_NEW) {
+ if (am_sender)
+ maybe_send_keepalive();
+ goto read_loop;
+ }
+
+ if (!(flist = flist_for_ndx(ndx))) {
+ invalid_ndx:
+ rprintf(FERROR,
+ "Invalid file index: %d (%d - %d) with iflags %x [%s]\n",
+ ndx, first_flist ? first_flist->ndx_start - 1 : -1,
+ first_flist ? first_flist->prev->ndx_end : -1,
+ iflags, who_am_i());
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ cur_flist = flist;
+ if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
+ fnamecmp_type = read_byte(f_in);
+ *type_ptr = fnamecmp_type;
+
+ if (iflags & ITEM_XNAME_FOLLOWS) {
+ if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
+ exit_cleanup(RERR_PROTOCOL);
+ } else {
+ *buf = '\0';
+ len = -1;
+ }
+ *len_ptr = len;
+
+ if (iflags & ITEM_TRANSFER) {
+ int i = ndx - cur_flist->ndx_start;
+ if (i < 0 || !S_ISREG(cur_flist->files[i]->mode)) {
+ rprintf(FERROR,
+ "received request to transfer non-regular file: %d [%s]\n",
+ ndx, who_am_i());
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ }
+
+ *iflag_ptr = iflags;
+ return ndx;
+}
/*
free a sums struct
free(s);
}
+/* This is only called when we aren't preserving permissions. Figure out what
+ * the permissions should be and return them merged back into the mode. */
+mode_t dest_mode(mode_t flist_mode, mode_t stat_mode, int dflt_perms,
+ int exists)
+{
+ int new_mode;
+ /* If the file already exists, we'll return the local permissions,
+ * possibly tweaked by the --executability option. */
+ if (exists) {
+ new_mode = (flist_mode & ~CHMOD_BITS) | (stat_mode & CHMOD_BITS);
+ if (preserve_executability && S_ISREG(flist_mode)) {
+ /* If the source file is executable, grant execute
+ * rights to everyone who can read, but ONLY if the
+ * file isn't already executable. */
+ if (!(flist_mode & 0111))
+ new_mode &= ~0111;
+ else if (!(stat_mode & 0111))
+ new_mode |= (new_mode & 0444) >> 2;
+ }
+ } else {
+ /* Apply destination default permissions and turn
+ * off special permissions. */
+ new_mode = flist_mode & (~CHMOD_BITS | dflt_perms);
+ }
+ return new_mode;
+}
-int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
- int flags)
+int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
+ const char *fnamecmp, int flags)
{
int updated = 0;
- STRUCT_STAT st2;
+ stat_x sx2;
int change_uid, change_gid;
+ mode_t new_mode = file->mode;
+ int inherit;
- if (!st) {
+ if (!sxp) {
if (dry_run)
return 1;
- if (link_stat(fname, &st2, 0) < 0) {
- rsyserr(FERROR, errno, "stat %s failed",
+ if (link_stat(fname, &sx2.st, 0) < 0) {
+ rsyserr(FERROR_XFER, errno, "stat %s failed",
full_fname(fname));
return 0;
}
- st = &st2;
+#ifdef SUPPORT_ACLS
+ sx2.acc_acl = sx2.def_acl = NULL;
+#endif
+#ifdef SUPPORT_XATTRS
+ sx2.xattr = NULL;
+#endif
+ sxp = &sx2;
+ inherit = !preserve_perms;
+ } else
+ inherit = !preserve_perms && file->flags & FLAG_DIR_CREATED;
+
+ if (inherit && S_ISDIR(new_mode) && sxp->st.st_mode & S_ISGID) {
+ /* We just created this directory and its setgid
+ * bit is on, so make sure it stays on. */
+ new_mode |= S_ISGID;
}
- if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
- flags |= PERMS_SKIP_MTIME;
- if (!(flags & PERMS_SKIP_MTIME)
- && cmp_modtime(st->st_mtime, file->modtime) != 0) {
- int ret = set_modtime(fname, file->modtime, st->st_mode);
+#ifdef SUPPORT_ACLS
+ if (preserve_acls && !S_ISLNK(file->mode) && !ACL_READY(*sxp))
+ get_acl(fname, sxp);
+#endif
+
+#ifdef SUPPORT_XATTRS
+ if (preserve_xattrs && fnamecmp)
+ set_xattr(fname, file, fnamecmp, sxp);
+ if (am_root < 0)
+ set_stat_xattr(fname, file);
+#endif
+
+ if (!preserve_times || (S_ISDIR(sxp->st.st_mode) && preserve_times == 1))
+ flags |= ATTRS_SKIP_MTIME;
+ if (!(flags & ATTRS_SKIP_MTIME)
+ && cmp_time(sxp->st.st_mtime, file->modtime) != 0) {
+ int ret = set_modtime(fname, file->modtime, sxp->st.st_mode);
if (ret < 0) {
- rsyserr(FERROR, errno, "failed to set times on %s",
+ rsyserr(FERROR_XFER, errno, "failed to set times on %s",
full_fname(fname));
- return 0;
+ goto cleanup;
}
if (ret == 0) /* ret == 1 if symlink could not be set */
updated = 1;
}
- change_uid = am_root && preserve_uid && st->st_uid != file->uid;
- change_gid = preserve_gid && file->gid != GID_NONE
- && st->st_gid != file->gid;
+ change_uid = am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file);
+ change_gid = gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
+ && sxp->st.st_gid != (gid_t)F_GROUP(file);
#if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
- if (S_ISLNK(st->st_mode))
+ if (S_ISLNK(sxp->st.st_mode)) {
;
- else
+ } else
#endif
if (change_uid || change_gid) {
if (verbose > 2) {
if (change_uid) {
rprintf(FINFO,
- "set uid of %s from %ld to %ld\n",
- safe_fname(fname),
- (long)st->st_uid, (long)file->uid);
+ "set uid of %s from %u to %u\n",
+ fname, (unsigned)sxp->st.st_uid, F_OWNER(file));
}
if (change_gid) {
rprintf(FINFO,
- "set gid of %s from %ld to %ld\n",
- safe_fname(fname),
- (long)st->st_gid, (long)file->gid);
+ "set gid of %s from %u to %u\n",
+ fname, (unsigned)sxp->st.st_gid, F_GROUP(file));
}
}
- if (do_lchown(fname,
- change_uid ? file->uid : st->st_uid,
- change_gid ? file->gid : st->st_gid) != 0) {
+ if (am_root < 0) {
+ ;
+ } else if (do_lchown(fname,
+ change_uid ? (uid_t)F_OWNER(file) : sxp->st.st_uid,
+ change_gid ? (gid_t)F_GROUP(file) : sxp->st.st_gid) != 0) {
/* shouldn't have attempted to change uid or gid
* unless have the privilege */
- rsyserr(FERROR, errno, "%s %s failed",
+ rsyserr(FERROR_XFER, errno, "%s %s failed",
change_uid ? "chown" : "chgrp",
full_fname(fname));
- return 0;
- }
+ goto cleanup;
+ } else
/* a lchown had been done - we have to re-stat if the
* destination had the setuid or setgid bits set due
* to the side effect of the chown call */
- if (st->st_mode & (S_ISUID | S_ISGID)) {
- link_stat(fname, st,
- keep_dirlinks && S_ISDIR(st->st_mode));
+ if (sxp->st.st_mode & (S_ISUID | S_ISGID)) {
+ link_stat(fname, &sxp->st,
+ keep_dirlinks && S_ISDIR(sxp->st.st_mode));
}
updated = 1;
}
+ if (daemon_chmod_modes && !S_ISLNK(new_mode))
+ new_mode = tweak_mode(new_mode, daemon_chmod_modes);
+
+#ifdef SUPPORT_ACLS
+ /* It's OK to call set_acl() now, even for a dir, as the generator
+ * will enable owner-writability using chmod, if necessary.
+ *
+ * If set_acl() changes permission bits in the process of setting
+ * an access ACL, it changes sxp->st.st_mode so we know whether we
+ * need to chmod(). */
+ if (preserve_acls && !S_ISLNK(new_mode) && set_acl(fname, file, sxp) == 0)
+ updated = 1;
+#endif
+
#ifdef HAVE_CHMOD
- if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
- int ret = do_chmod(fname, file->mode);
+ if (!BITS_EQUAL(sxp->st.st_mode, new_mode, CHMOD_BITS)) {
+ int ret = am_root < 0 ? 0 : do_chmod(fname, new_mode);
if (ret < 0) {
- rsyserr(FERROR, errno,
+ rsyserr(FERROR_XFER, errno,
"failed to set permissions on %s",
full_fname(fname));
- return 0;
+ goto cleanup;
}
if (ret == 0) /* ret == 1 if symlink could not be set */
updated = 1;
}
#endif
- if (verbose > 1 && flags & PERMS_REPORT) {
- enum logcode code = daemon_log_format_has_i || dry_run
- ? FCLIENT : FINFO;
+ if (verbose > 1 && flags & ATTRS_REPORT) {
if (updated)
- rprintf(code, "%s\n", safe_fname(fname));
+ rprintf(FCLIENT, "%s\n", fname);
else
- rprintf(code, "%s is uptodate\n", safe_fname(fname));
+ rprintf(FCLIENT, "%s is uptodate\n", fname);
+ }
+ cleanup:
+ if (sxp == &sx2) {
+#ifdef SUPPORT_ACLS
+ if (preserve_acls)
+ free_acl(&sx2);
+#endif
+#ifdef SUPPORT_XATTRS
+ if (preserve_xattrs)
+ free_xattr(&sx2);
+#endif
}
return updated;
}
-
-void sig_int(void)
+RETSIGTYPE sig_int(UNUSED(int val))
{
/* KLUGE: if the user hits Ctrl-C while ssh is prompting
* for a password, then our cleanup's sending of a SIGUSR1
exit_cleanup(RERR_SIGNAL);
}
-
-/* finish off a file transfer, renaming the file and setting the permissions
- and ownership */
-void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
- int ok_to_set_time, int overwriting_basis)
+/* Finish off a file transfer: renaming the file and setting the file's
+ * attributes (e.g. permissions, ownership, etc.). If partialptr is not
+ * NULL and the robust_rename() call is forced to copy the temp file, we
+ * stage the file into the partial-dir and then rename it into place. */
+void finish_transfer(const char *fname, const char *fnametmp,
+ const char *fnamecmp, const char *partialptr,
+ struct file_struct *file, int ok_to_set_time,
+ int overwriting_basis)
{
int ret;
if (inplace) {
if (verbose > 2)
- rprintf(FINFO, "finishing %s\n", safe_fname(fname));
- goto do_set_perms;
+ rprintf(FINFO, "finishing %s\n", fname);
+ fnametmp = fname;
+ goto do_set_file_attrs;
}
- if (make_backups && overwriting_basis && !make_backup(fname))
+ if (make_backups > 0 && overwriting_basis && !make_backup(fname))
return;
/* Change permissions before putting the file into place. */
- set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
+ set_file_attrs(fnametmp, file, NULL, fnamecmp,
+ ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
/* move tmp file over real file */
- if (verbose > 2) {
- rprintf(FINFO, "renaming %s to %s\n",
- safe_fname(fnametmp), safe_fname(fname));
- }
- ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
+ if (verbose > 2)
+ rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
+ ret = robust_rename(fnametmp, fname, partialptr,
+ file->mode & INITACCESSPERMS);
if (ret < 0) {
- rsyserr(FERROR, errno, "%s %s -> \"%s\"",
- ret == -2 ? "copy" : "rename",
- full_fname(fnametmp), safe_fname(fname));
+ rsyserr(FERROR_XFER, errno, "%s %s -> \"%s\"",
+ ret == -2 ? "copy" : "rename",
+ full_fname(fnametmp), fname);
do_unlink(fnametmp);
return;
}
/* The file was moved into place (not copied), so it's done. */
return;
}
- do_set_perms:
- set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
+ /* The file was copied, so tweak the perms of the copied file. If it
+ * was copied to partialptr, move it into its final destination. */
+ fnametmp = partialptr ? partialptr : fname;
+
+ do_set_file_attrs:
+ set_file_attrs(fnametmp, file, NULL, fnamecmp,
+ ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
+
+ if (partialptr) {
+ if (do_rename(fnametmp, fname) < 0) {
+ rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\"",
+ full_fname(fnametmp), fname);
+ } else
+ handle_partial_dir(partialptr, PDIR_DELETE);
+ }
+}
+
+struct file_list *flist_for_ndx(int ndx)
+{
+ struct file_list *flist = cur_flist;
+
+ if (!flist && !(flist = first_flist))
+ return NULL;
+
+ while (ndx < flist->ndx_start-1) {
+ if (flist == first_flist)
+ return NULL;
+ flist = flist->prev;
+ }
+ while (ndx > flist->ndx_end) {
+ if (!(flist = flist->next))
+ return NULL;
+ }
+ return flist;
}
const char *who_am_i(void)
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff