-/*
- Copyright (C) Andrew Tridgell 1996
+/* -*- c-file-style: "linux" -*-
+
+ Copyright (C) 1996-2000 by Andrew Tridgell
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.
extern int verbose;
extern int recurse;
extern int delete_mode;
-extern int remote_version;
+extern int delete_after;
+extern int max_delete;
extern int csum_length;
extern struct stats stats;
extern int dry_run;
extern int am_server;
extern int relative_paths;
+extern int keep_dirlinks;
extern int preserve_hard_links;
+extern int preserve_perms;
extern int cvs_exclude;
extern int io_error;
extern char *tmpdir;
extern char *compare_dest;
-
-
-static struct delete_list {
- dev_t dev;
- INO_T inode;
-} *delete_list;
-static int dlist_len, dlist_alloc_len;
-
-
-/* yuck! This function wouldn't have been necessary if I had the sorting
- algorithm right. Unfortunately fixing the sorting algorithm would introduce
- a backward incompatibility as file list indexes are sent over the link.
-*/
-static int delete_already_done(struct file_list *flist,int j)
+extern int make_backups;
+extern int do_progress;
+extern char *backup_dir;
+extern char *backup_suffix;
+extern int backup_suffix_len;
+extern int cleanup_got_literal;
+extern int module_id;
+extern int ignore_errors;
+extern int orig_umask;
+extern int keep_partial;
+extern int checksum_seed;
+
+static void delete_one(char *fn, int is_dir)
{
- int i;
- STRUCT_STAT st;
-
- if (link_stat(f_name(flist->files[j]), &st)) return 1;
-
- for (i=0;i<dlist_len;i++) {
- if (st.st_ino == delete_list[i].inode &&
- st.st_dev == delete_list[i].dev)
- return 1;
+ if (!is_dir) {
+ if (robust_unlink(fn) != 0) {
+ rsyserr(FERROR, errno, "delete_one: unlink %s failed",
+ full_fname(fn));
+ } else if (verbose)
+ rprintf(FINFO, "deleting %s\n", fn);
+ } else {
+ if (do_rmdir(fn) != 0) {
+ if (errno == ENOTDIR && keep_dirlinks) {
+ delete_one(fn, 0);
+ return;
+ }
+ if (errno != ENOTEMPTY && errno != EEXIST) {
+ rsyserr(FERROR, errno,
+ "delete_one: rmdir %s failed",
+ full_fname(fn));
+ }
+ } else if (verbose)
+ rprintf(FINFO, "deleting directory %s\n", fn);
}
-
- return 0;
}
-static void add_delete_entry(struct file_struct *file)
-{
- if (dlist_len == dlist_alloc_len) {
- dlist_alloc_len += 1024;
- delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len);
- if (!delete_list) out_of_memory("add_delete_entry");
- }
-
- delete_list[dlist_len].dev = file->dev;
- delete_list[dlist_len].inode = file->inode;
- dlist_len++;
- if (verbose > 3)
- rprintf(FINFO,"added %s to delete list\n", f_name(file));
-}
-
-static void delete_one(struct file_struct *f)
+static int is_backup_file(char *fn)
{
- if (!S_ISDIR(f->mode)) {
- if (do_unlink(f_name(f)) != 0) {
- rprintf(FERROR,"unlink %s : %s\n",f_name(f),strerror(errno));
- } else if (verbose) {
- rprintf(FINFO,"deleting %s\n",f_name(f));
- }
- } else {
- if (do_rmdir(f_name(f)) != 0) {
- if (errno != ENOTEMPTY && errno != EEXIST)
- rprintf(FERROR,"rmdir %s : %s\n",f_name(f),strerror(errno));
- } else if (verbose) {
- rprintf(FINFO,"deleting directory %s\n",f_name(f));
- }
- }
+ int k = strlen(fn) - backup_suffix_len;
+ return k > 0 && strcmp(fn+k, backup_suffix) == 0;
}
-
-
-/* this deletes any files on the receiving side that are not present
- on the sending side. For version 1.6.4 I have changed the behaviour
- to match more closely what most people seem to expect of this option */
-static void delete_files(struct file_list *flist)
+/* This deletes any files on the receiving side that are not present
+ * on the sending side. */
+void delete_files(struct file_list *flist)
{
struct file_list *local_file_list;
int i, j;
- char *name;
+ char *argv[1], fbuf[MAXPATHLEN];
+ static int deletion_count;
if (cvs_exclude)
add_cvs_excludes();
- if (io_error) {
+ if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
rprintf(FINFO,"IO error encountered - skipping file deletion\n");
return;
}
- for (j=0;j<flist->count;j++) {
- if (!S_ISDIR(flist->files[j]->mode) ||
- !(flist->files[j]->flags & FLAG_DELETE)) continue;
-
- if (remote_version < 19 &&
- delete_already_done(flist, j)) continue;
+ for (j = 0; j < flist->count; j++) {
+ if (!(flist->files[j]->flags & FLAG_TOP_DIR)
+ || !S_ISDIR(flist->files[j]->mode))
+ continue;
- name = strdup(f_name(flist->files[j]));
+ argv[0] = f_name_to(flist->files[j], fbuf);
- if (!(local_file_list = send_file_list(-1,1,&name))) {
- free(name);
+ if (!(local_file_list = send_file_list(-1, 1, argv)))
continue;
- }
if (verbose > 1)
- rprintf(FINFO,"deleting in %s\n", name);
-
- for (i=local_file_list->count-1;i>=0;i--) {
- if (!local_file_list->files[i]->basename) continue;
- if (remote_version < 19 &&
- S_ISDIR(local_file_list->files[i]->mode))
- add_delete_entry(local_file_list->files[i]);
- if (-1 == flist_find(flist,local_file_list->files[i])) {
- delete_one(local_file_list->files[i]);
- }
+ rprintf(FINFO, "deleting in %s\n", fbuf);
+
+ for (i = local_file_list->count-1; i >= 0; i--) {
+ if (max_delete && deletion_count > max_delete)
+ break;
+ if (!local_file_list->files[i]->basename)
+ continue;
+ if (flist_find(flist,local_file_list->files[i]) < 0) {
+ char *f = f_name(local_file_list->files[i]);
+ if (make_backups && (backup_dir || !is_backup_file(f))) {
+ make_backup(f);
+ if (verbose)
+ rprintf(FINFO, "deleting %s\n", f);
+ } else {
+ int mode = local_file_list->files[i]->mode;
+ delete_one(f, S_ISDIR(mode) != 0);
+ }
+ deletion_count++;
+ }
}
flist_free(local_file_list);
- free(name);
}
}
+/*
+ * get_tmpname() - create a tmp filename for a given filename
+ *
+ * If a tmpdir is defined, use that as the directory to
+ * put it in. Otherwise, the tmp filename is in the same
+ * directory as the given name. Note that there may be no
+ * directory at all in the given name!
+ *
+ * The tmp filename is basically the given filename with a
+ * dot prepended, and .XXXXXX appended (for mkstemp() to
+ * put its unique gunk in). Take care to not exceed
+ * either the MAXPATHLEN or NAME_MAX, esp. the last, as
+ * the basename basically becomes 8 chars longer. In that
+ * case, the original name is shortened sufficiently to
+ * make it all fit.
+ *
+ * Of course, there's no real reason for the tmp name to
+ * look like the original, except to satisfy us humans.
+ * As long as it's unique, rsync will work.
+ */
+
static int get_tmpname(char *fnametmp, char *fname)
{
char *f;
+ int length = 0;
+ int maxname;
- /* open tmp file */
if (tmpdir) {
- f = strrchr(fname,'/');
- if (f == NULL)
- f = fname;
- else
- f++;
- if (strlen(tmpdir)+strlen(f)+10 > MAXPATHLEN) {
- rprintf(FERROR,"filename too long\n");
- return 0;
+ /* Note: this can't overflow, so the return value is safe */
+ length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
+ fnametmp[length++] = '/';
+ fnametmp[length] = '\0'; /* always NULL terminated */
+ }
+
+ if ((f = strrchr(fname, '/')) != NULL) {
+ ++f;
+ if (!tmpdir) {
+ length = f - fname;
+ /* copy up to and including the slash */
+ strlcpy(fnametmp, fname, length + 1);
}
- slprintf(fnametmp,MAXPATHLEN-1, "%s/.%s.XXXXXX",tmpdir,f);
- return 1;
- }
+ } else
+ f = fname;
+ fnametmp[length++] = '.';
+ fnametmp[length] = '\0'; /* always NULL terminated */
- f = strrchr(fname,'/');
+ maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
- if (strlen(fname)+9 > MAXPATHLEN) {
- rprintf(FERROR,"filename too long\n");
+ if (maxname < 1) {
+ rprintf(FERROR, "temporary filename too long: %s\n", fname);
+ fnametmp[0] = '\0';
return 0;
}
- if (f) {
- *f = 0;
- slprintf(fnametmp,MAXPATHLEN-1,"%s/.%s.XXXXXX",
- fname,f+1);
- *f = '/';
- } else {
- slprintf(fnametmp,MAXPATHLEN-1,".%s.XXXXXX",fname);
- }
+ strlcpy(fnametmp + length, f, maxname);
+ strcat(fnametmp + length, ".XXXXXX");
return 1;
}
-static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
+static int receive_data(int f_in,struct map_struct *mapbuf,int fd,char *fname,
OFF_T total_size)
{
- int i,n,remainder,len,count;
+ int i;
+ struct sum_struct sum;
+ unsigned int len;
OFF_T offset = 0;
OFF_T offset2;
char *data;
static char file_sum1[MD4_SUM_LENGTH];
static char file_sum2[MD4_SUM_LENGTH];
- char *map=NULL;
-
- count = read_int(f_in);
- n = read_int(f_in);
- remainder = read_int(f_in);
-
- sum_init();
-
- for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
-
- show_progress(offset, total_size);
+ char *map = NULL;
- if (i > 0) {
- extern int cleanup_got_literal;
+ read_sum_head(f_in, &sum);
+
+ sum_init(checksum_seed);
+ while ((i = recv_token(f_in, &data)) != 0) {
+ if (do_progress)
+ show_progress(offset, total_size);
+
+ if (i > 0) {
if (verbose > 3) {
- rprintf(FINFO,"data recv %d at %d\n",
- i,(int)offset);
+ rprintf(FINFO,"data recv %d at %.0f\n",
+ i,(double)offset);
}
stats.literal_data += i;
cleanup_got_literal = 1;
-
+
sum_update(data,i);
if (fd != -1 && write_file(fd,data,i) != i) {
- rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
- exit_cleanup(1);
+ rsyserr(FERROR, errno, "write failed on %s",
+ full_fname(fname));
+ exit_cleanup(RERR_FILEIO);
}
offset += i;
continue;
- }
+ }
i = -(i+1);
- offset2 = i*n;
- len = n;
- if (i == count-1 && remainder != 0)
- len = remainder;
-
+ offset2 = i*(OFF_T)sum.blength;
+ len = sum.blength;
+ if (i == (int)sum.count-1 && sum.remainder != 0)
+ len = sum.remainder;
+
stats.matched_data += len;
-
+
if (verbose > 3)
- rprintf(FINFO,"chunk[%d] of size %d at %d offset=%d\n",
- i,len,(int)offset2,(int)offset);
-
- map = map_ptr(buf,offset2,len);
-
- see_token(map, len);
- sum_update(map,len);
-
- if (fd != -1 && write_file(fd,map,len) != len) {
- rprintf(FERROR,"write failed on %s : %s\n",
- fname,strerror(errno));
- exit_cleanup(1);
+ rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
+ i,len,(double)offset2,(double)offset);
+
+ if (mapbuf) {
+ map = map_ptr(mapbuf,offset2,len);
+
+ see_token(map, len);
+ sum_update(map,len);
+ }
+
+ if (fd != -1 && write_file(fd, map, len) != (int)len) {
+ rsyserr(FERROR, errno, "write failed on %s",
+ full_fname(fname));
+ exit_cleanup(RERR_FILEIO);
}
offset += len;
}
- end_progress();
+ flush_write_file(fd);
+
+ if (do_progress)
+ end_progress(total_size);
if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
- rprintf(FERROR,"write failed on %s : %s\n",
- fname,strerror(errno));
- exit_cleanup(1);
+ rsyserr(FERROR, errno, "write failed on %s",
+ full_fname(fname));
+ exit_cleanup(RERR_FILEIO);
}
sum_end(file_sum1);
- if (remote_version >= 14) {
- read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
- if (verbose > 2) {
- rprintf(FINFO,"got file_sum\n");
- }
- if (fd != -1 &&
- memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
- return 0;
- }
- }
+ read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
+ if (verbose > 2)
+ rprintf(FINFO,"got file_sum\n");
+ if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0)
+ return 0;
return 1;
}
-
-int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
-{
+/**
+ * main routine for receiver process.
+ *
+ * Receiver process runs on the same host as the generator process. */
+int recv_files(int f_in,struct file_list *flist,char *local_name)
+{
int fd1,fd2;
STRUCT_STAT st;
- char *fname;
+ char *fname, fbuf[MAXPATHLEN];
+ char template[MAXPATHLEN];
char fnametmp[MAXPATHLEN];
char *fnamecmp;
char fnamecmpbuf[MAXPATHLEN];
- struct map_struct *buf;
- int i;
+ struct map_struct *mapbuf;
struct file_struct *file;
- int phase=0;
- int recv_ok;
- extern int module_id;
+ struct stats initial_stats;
+ int save_make_backups = make_backups;
+ int i, recv_ok, phase = 0;
- if (verbose > 2) {
+ if (verbose > 2)
rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
- }
- if (recurse && delete_mode && !local_name && flist->count>0) {
- delete_files(flist);
+ if (flist->hlink_pool) {
+ pool_destroy(flist->hlink_pool);
+ flist->hlink_pool = NULL;
}
- while (1) {
+ while (1) {
cleanup_disable();
i = read_int(f_in);
if (i == -1) {
- if (phase==0 && remote_version >= 13) {
- phase++;
- csum_length = SUM_LENGTH;
- if (verbose > 2)
- rprintf(FINFO,"recv_files phase=%d\n",phase);
- write_int(f_gen,-1);
- continue;
- }
- break;
+ if (phase)
+ break;
+ phase = 1;
+ csum_length = SUM_LENGTH;
+ if (verbose > 2)
+ rprintf(FINFO, "recv_files phase=%d\n", phase);
+ send_msg(MSG_DONE, "", 0);
+ if (keep_partial)
+ make_backups = 0; /* prevents double backup */
+ continue;
}
if (i < 0 || i >= flist->count) {
- rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
+ rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
i, flist->count);
- exit_cleanup(1);
+ exit_cleanup(RERR_PROTOCOL);
}
file = flist->files[i];
- fname = f_name(file);
+ stats.current_file_index = i;
stats.num_transferred_files++;
stats.total_transferred_size += file->length;
+ cleanup_got_literal = 0;
if (local_name)
fname = local_name;
+ else
+ fname = f_name_to(file, fbuf);
if (dry_run) {
- if (!am_server) {
- log_transfer(file, fname);
- }
+ if (!am_server && verbose)
+ rprintf(FINFO, "%s\n", fname);
continue;
}
+ initial_stats = stats;
+
if (verbose > 2)
rprintf(FINFO,"recv_files(%s)\n",fname);
fnamecmp = fname;
- /* open the file */
- fd1 = open(fnamecmp,O_RDONLY);
+ /* open the file */
+ fd1 = do_open(fnamecmp, O_RDONLY, 0);
- if ((fd1 == -1) && (compare_dest != NULL)) {
+ if (fd1 == -1 && compare_dest != NULL) {
/* try the file at compare_dest instead */
- slprintf(fnamecmpbuf,MAXPATHLEN-1,"%s/%s",
- compare_dest,fname);
+ pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
+ compare_dest, fname);
fnamecmp = fnamecmpbuf;
- fd1 = open(fnamecmp,O_RDONLY);
+ fd1 = do_open(fnamecmp, O_RDONLY, 0);
}
if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
- rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
+ rsyserr(FERROR, errno, "fstat %s failed",
+ full_fname(fnamecmp));
receive_data(f_in,NULL,-1,NULL,file->length);
close(fd1);
continue;
}
- if (fd1 != -1 && !S_ISREG(st.st_mode)) {
- rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
- receive_data(f_in,NULL,-1,NULL,file->length);
+ if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
+ /* this special handling for directories
+ * wouldn't be necessary if robust_rename()
+ * and the underlying robust_unlink could cope
+ * with directories
+ */
+ rprintf(FERROR,"recv_files: %s is a directory\n",
+ full_fname(fnamecmp));
+ receive_data(f_in, NULL, -1, NULL, file->length);
close(fd1);
continue;
}
- if (fd1 != -1 && st.st_size > 0) {
- buf = map_file(fd1,st.st_size);
- if (verbose > 2)
- rprintf(FINFO,"recv mapped %s of size %d\n",fnamecmp,(int)st.st_size);
- } else {
- buf = NULL;
+ if (fd1 != -1 && !S_ISREG(st.st_mode)) {
+ close(fd1);
+ fd1 = -1;
+ mapbuf = NULL;
}
- if (!get_tmpname(fnametmp,fname)) {
- if (buf) unmap_file(buf);
- if (fd1 != -1) close(fd1);
- continue;
+ if (fd1 != -1 && !preserve_perms) {
+ /* if the file exists already and we aren't preserving
+ * permissions then act as though the remote end sent
+ * us the file permissions we already have */
+ file->mode = st.st_mode;
}
- if (NULL == do_mktemp(fnametmp)) {
- rprintf(FERROR,"mktemp %s failed\n",fnametmp);
- receive_data(f_in,buf,-1,NULL,file->length);
- if (buf) unmap_file(buf);
- if (fd1 != -1) close(fd1);
+ if (fd1 != -1 && st.st_size > 0) {
+ mapbuf = map_file(fd1,st.st_size);
+ if (verbose > 2) {
+ rprintf(FINFO, "recv mapped %s of size %.0f\n",
+ fnamecmp, (double)st.st_size);
+ }
+ } else
+ mapbuf = NULL;
+
+ if (!get_tmpname(fnametmp,fname)) {
+ if (mapbuf)
+ unmap_file(mapbuf);
+ if (fd1 != -1)
+ close(fd1);
continue;
}
+ strlcpy(template, fnametmp, sizeof template);
+
/* we initially set the perms without the
- setuid/setgid bits to ensure that there is no race
- condition. They are then correctly updated after
- the lchown. Thanks to snabb@epipe.fi for pointing
- this out */
- fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
- file->mode & ACCESSPERMS);
-
- if (fd2 == -1 && relative_paths && errno == ENOENT &&
- create_directory_path(fnametmp) == 0) {
- fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
- file->mode & ACCESSPERMS);
+ * setuid/setgid bits to ensure that there is no race
+ * condition. They are then correctly updated after
+ * the lchown. Thanks to snabb@epipe.fi for pointing
+ * this out. We also set it initially without group
+ * access because of a similar race condition. */
+ fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
+
+ /* in most cases parent directories will already exist
+ * because their information should have been previously
+ * transferred, but that may not be the case with -R */
+ if (fd2 == -1 && relative_paths && errno == ENOENT &&
+ create_directory_path(fnametmp, orig_umask) == 0) {
+ strlcpy(fnametmp, template, sizeof fnametmp);
+ fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
}
if (fd2 == -1) {
- rprintf(FERROR,"open %s : %s\n",fnametmp,strerror(errno));
- receive_data(f_in,buf,-1,NULL,file->length);
- if (buf) unmap_file(buf);
- if (fd1 != -1) close(fd1);
+ rsyserr(FERROR, errno, "mkstemp %s failed",
+ full_fname(fnametmp));
+ receive_data(f_in,mapbuf,-1,NULL,file->length);
+ if (mapbuf)
+ unmap_file(mapbuf);
+ if (fd1 != -1)
+ close(fd1);
continue;
}
-
- cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
- if (!am_server) {
- log_transfer(file, fname);
- }
+ cleanup_set(fnametmp, fname, file, mapbuf, fd1, fd2);
+
+ if (!am_server && verbose)
+ rprintf(FINFO, "%s\n", fname);
- log_recv(file);
-
/* recv file data */
- recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
-
- if (buf) unmap_file(buf);
- if (fd1 != -1) {
+ recv_ok = receive_data(f_in,mapbuf,fd2,fname,file->length);
+
+ log_recv(file, &initial_stats);
+
+ if (mapbuf)
+ unmap_file(mapbuf);
+ if (fd1 != -1)
close(fd1);
+ if (close(fd2) < 0) {
+ rsyserr(FERROR, errno, "close failed on %s",
+ full_fname(fnametmp));
+ exit_cleanup(RERR_FILEIO);
}
- close(fd2);
-
- if (verbose > 2)
- rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
- finish_transfer(fname, fnametmp, file);
+ if (recv_ok || keep_partial)
+ finish_transfer(fname, fnametmp, file, recv_ok);
+ else
+ do_unlink(fnametmp);
cleanup_disable();
-
+
if (!recv_ok) {
if (csum_length == SUM_LENGTH) {
rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
- fname);
+ full_fname(fname));
} else {
+ char buf[4];
if (verbose > 1)
rprintf(FINFO,"redoing %s(%d)\n",fname,i);
- write_int(f_gen,i);
+ SIVAL(buf, 0, i);
+ send_msg(MSG_REDO, buf, 4);
}
}
}
+ make_backups = save_make_backups;
- if (preserve_hard_links)
- do_hard_links(flist);
-
- /* now we need to fix any directory permissions that were
- modified during the transfer */
- for (i = 0; i < flist->count; i++) {
- file = flist->files[i];
- if (!file->basename || !S_ISDIR(file->mode)) continue;
- recv_generator(f_name(file),flist,i,-1);
- }
+ if (delete_after && recurse && delete_mode && !local_name
+ && flist->count > 0)
+ delete_files(flist);
if (verbose > 2)
rprintf(FINFO,"recv_files finished\n");
-
+
return 0;
}
-
git.samba.org / rsync.git / blobdiff