Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include "rsync.h"
+/* this file contains code used by more than one part of the rsync
+ process */
-extern int csum_length;
+#include "rsync.h"
extern int verbose;
-extern int am_server;
-extern int always_checksum;
-extern time_t starttime;
-
-extern int remote_version;
-
-extern char *backup_suffix;
-extern char *tmpdir;
-
-extern int whole_file;
-extern int block_size;
-extern int update_only;
-extern int make_backups;
-extern int preserve_links;
-extern int preserve_hard_links;
-extern int preserve_perms;
-extern int preserve_devices;
-extern int preserve_uid;
-extern int preserve_gid;
-extern int preserve_times;
extern int dry_run;
-extern int ignore_times;
-extern int recurse;
-extern int delete_mode;
-extern int cvs_exclude;
+extern int preserve_times;
extern int am_root;
-extern int relative_paths;
-extern int io_timeout;
-extern int io_error;
-extern struct stats stats;
-
-
-/* handling the cleanup when a transfer is interrupted is tricky when
- --partial is selected. We need to ensure that the partial file is
- kept if any real data has been transferred */
-static int cleanup_got_literal;
-static char *cleanup_fname;
-static char *cleanup_new_fname;
-static struct file_struct *cleanup_file;
-static void finish_transfer(char *fname, char *fnametmp, struct file_struct *file);
-
-void exit_cleanup(int code)
-{
- extern int keep_partial;
-
- signal(SIGUSR1, SIG_IGN);
-
- if (cleanup_got_literal && cleanup_fname && keep_partial) {
- char *fname = cleanup_fname;
- cleanup_fname = NULL;
- finish_transfer(cleanup_new_fname, fname, cleanup_file);
- }
- io_flush();
- if (cleanup_fname)
- do_unlink(cleanup_fname);
- if (code) {
- kill_all(SIGUSR1);
- }
- exit(code);
-}
+extern int preserve_uid;
+extern int preserve_gid;
+extern int preserve_perms;
+extern int make_backups;
+extern char *backup_suffix;
/*
free a sums struct
*/
-static void free_sums(struct sum_struct *s)
+void free_sums(struct sum_struct *s)
{
- if (s->sums) free(s->sums);
- free(s);
+ if (s->sums) free(s->sums);
+ free(s);
}
* delete a file or directory. If force_delet is set then delete
* recursively
*/
-static int delete_file(char *fname)
+int delete_file(char *fname)
{
DIR *d;
struct dirent *di;
int ret;
extern int recurse;
- if (do_unlink(fname) == 0 || errno == ENOENT) return 0;
+ if (robust_unlink(fname) == 0 || errno == ENOENT) return 0;
#if SUPPORT_LINKS
ret = do_lstat(fname, &st);
if (strcmp(dname,".")==0 ||
strcmp(dname,"..")==0)
continue;
- slprintf(buf, sizeof(buf)-1, "%s/%s", fname, dname);
+ slprintf(buf, sizeof(buf), "%s/%s", fname, dname);
if (verbose > 0)
rprintf(FINFO,"deleting %s\n", buf);
if (delete_file(buf) != 0) {
return 0;
}
-/*
- send a sums struct down a fd
- */
-static void send_sums(struct sum_struct *s,int f_out)
-{
- int i;
-
- /* tell the other guy how many we are going to be doing and how many
- bytes there are in the last chunk */
- write_int(f_out,s?s->count:0);
- write_int(f_out,s?s->n:block_size);
- write_int(f_out,s?s->remainder:0);
- if (s)
- for (i=0;i<s->count;i++) {
- write_int(f_out,s->sums[i].sum1);
- write_buf(f_out,s->sums[i].sum2,csum_length);
- }
-}
-
-
-/*
- generate a stream of signatures/checksums that describe a buffer
-
- generate approximately one checksum every n bytes
- */
-static struct sum_struct *generate_sums(struct map_struct *buf,OFF_T len,int n)
+static int is_in_group(gid_t gid)
{
- int i;
- struct sum_struct *s;
- int count;
- int block_len = n;
- int remainder = (len%block_len);
- OFF_T offset = 0;
-
- count = (len+(block_len-1))/block_len;
-
- s = (struct sum_struct *)malloc(sizeof(*s));
- if (!s) out_of_memory("generate_sums");
-
- s->count = count;
- s->remainder = remainder;
- s->n = n;
- s->flength = len;
-
- if (count==0) {
- s->sums = NULL;
- return s;
- }
-
- if (verbose > 3)
- rprintf(FINFO,"count=%d rem=%d n=%d flength=%d\n",
- s->count,s->remainder,s->n,(int)s->flength);
-
- s->sums = (struct sum_buf *)malloc(sizeof(s->sums[0])*s->count);
- if (!s->sums) out_of_memory("generate_sums");
-
- for (i=0;i<count;i++) {
- int n1 = MIN(len,n);
- char *map = map_ptr(buf,offset,n1);
-
- s->sums[i].sum1 = get_checksum1(map,n1);
- get_checksum2(map,n1,s->sums[i].sum2);
-
- s->sums[i].offset = offset;
- s->sums[i].len = n1;
- s->sums[i].i = i;
-
- if (verbose > 3)
- rprintf(FINFO,"chunk[%d] offset=%d len=%d sum1=%08x\n",
- i,(int)s->sums[i].offset,s->sums[i].len,s->sums[i].sum1);
-
- len -= n1;
- offset += n1;
- }
-
- return s;
-}
-
-
-/*
- receive the checksums for a buffer
- */
-static struct sum_struct *receive_sums(int f)
-{
- struct sum_struct *s;
- int i;
- OFF_T offset = 0;
-
- s = (struct sum_struct *)malloc(sizeof(*s));
- if (!s) out_of_memory("receive_sums");
-
- s->count = read_int(f);
- s->n = read_int(f);
- s->remainder = read_int(f);
- s->sums = NULL;
-
- if (verbose > 3)
- rprintf(FINFO,"count=%d n=%d rem=%d\n",
- s->count,s->n,s->remainder);
-
- if (s->count == 0)
- return(s);
-
- s->sums = (struct sum_buf *)malloc(sizeof(s->sums[0])*s->count);
- if (!s->sums) out_of_memory("receive_sums");
-
- for (i=0;i<s->count;i++) {
- s->sums[i].sum1 = read_int(f);
- read_buf(f,s->sums[i].sum2,csum_length);
-
- s->sums[i].offset = offset;
- s->sums[i].i = i;
-
- if (i == s->count-1 && s->remainder != 0) {
- s->sums[i].len = s->remainder;
- } else {
- s->sums[i].len = s->n;
- }
- offset += s->sums[i].len;
-
- if (verbose > 3)
- rprintf(FINFO,"chunk[%d] len=%d offset=%d sum1=%08x\n",
- i,s->sums[i].len,(int)s->sums[i].offset,s->sums[i].sum1);
- }
+#ifdef GETGROUPS_T
+ static gid_t last_in = (gid_t) -2, last_out;
+ static int ngroups = -2;
+ static GETGROUPS_T *gidset;
+ int n;
+
+ if (gid == last_in)
+ return last_out;
+ if (ngroups < -1) {
+ /* treat failure (-1) as if not member of any group */
+ ngroups = getgroups(0, 0);
+ if (ngroups > 0) {
+ gidset = (GETGROUPS_T *) malloc(ngroups * sizeof(GETGROUPS_T));
+ ngroups = getgroups(ngroups, gidset);
+ }
+ }
- s->flength = offset;
+ last_in = gid;
+ last_out = 0;
+ for (n = 0; n < ngroups; n++) {
+ if (gidset[n] == gid) {
+ last_out = 1;
+ break;
+ }
+ }
+ return last_out;
- return s;
+#else
+ return 0;
+#endif
}
-
-static int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
- int report)
+int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
+ int report)
{
int updated = 0;
STRUCT_STAT st2;
+ int change_uid, change_gid;
extern int am_daemon;
if (dry_run) return 0;
if (preserve_times && !S_ISLNK(st->st_mode) &&
st->st_mtime != file->modtime) {
- updated = 1;
- if (set_modtime(fname,file->modtime) != 0) {
+ /* don't complain about not setting times on directories
+ because some filesystems can't do it */
+ if (set_modtime(fname,file->modtime) != 0 &&
+ !S_ISDIR(st->st_mode)) {
rprintf(FERROR,"failed to set times on %s : %s\n",
fname,strerror(errno));
return 0;
+ } else {
+ updated = 1;
}
}
- if ((am_root || !am_daemon) &&
- ((am_root && preserve_uid && st->st_uid != file->uid) ||
- (preserve_gid && st->st_gid != file->gid))) {
+ change_uid = am_root && preserve_uid && st->st_uid != file->uid;
+ change_gid = !am_daemon && preserve_gid && file->gid != (gid_t) -1 && \
+ st->st_gid != file->gid;
+ if (change_gid && !am_root) {
+ /* enforce bsd-style group semantics: non-root can only
+ change to groups that the user is a member of */
+ change_gid = is_in_group(file->gid);
+ }
+ if (change_uid || change_gid) {
if (do_lchown(fname,
- (am_root&&preserve_uid)?file->uid:-1,
- preserve_gid?file->gid:-1) != 0) {
- if (preserve_uid && st->st_uid != file->uid)
- updated = 1;
- if (verbose>1 || preserve_uid) {
- rprintf(FERROR,"chown %s : %s\n",
- fname,strerror(errno));
- return 0;
- }
- } else {
- updated = 1;
+ change_uid?file->uid:st->st_uid,
+ change_gid?file->gid:st->st_gid) != 0) {
+ /* shouldn't have attempted to change uid or gid
+ unless have the privilege */
+ rprintf(FERROR,"chown %s : %s\n", fname,strerror(errno));
+ return 0;
}
+ updated = 1;
}
#ifdef HAVE_CHMOD
- if (preserve_perms && !S_ISLNK(st->st_mode) &&
- (st->st_mode != file->mode ||
- (updated && (file->mode & ~ACCESSPERMS)))) {
- updated = 1;
- if (do_chmod(fname,file->mode) != 0) {
- rprintf(FERROR,"failed to set permissions on %s : %s\n",
- fname,strerror(errno));
- return 0;
+ if (!S_ISLNK(st->st_mode)) {
+ int file_mode;
+ if (preserve_perms)
+ file_mode = file->mode;
+ else
+ file_mode = file->mode & ACCESSPERMS;
+ if (st->st_mode != file->mode) {
+ updated = 1;
+ if (do_chmod(fname,file_mode) != 0) {
+ rprintf(FERROR,"failed to set permissions on %s : %s\n",
+ fname,strerror(errno));
+ return 0;
+ }
}
}
#endif
}
-/* choose whether to skip a particular file */
-static int skip_file(char *fname,
- struct file_struct *file, STRUCT_STAT *st)
-{
- if (st->st_size != file->length) {
- return 0;
- }
-
- /* if always checksum is set then we use the checksum instead
- of the file time to determine whether to sync */
- if (always_checksum && S_ISREG(st->st_mode)) {
- char sum[MD4_SUM_LENGTH];
- file_checksum(fname,sum,st->st_size);
- return (memcmp(sum,file->sum,csum_length) == 0);
- }
-
- if (ignore_times) {
- return 0;
- }
-
- return (st->st_mtime == file->modtime);
-}
-
-
-/* use a larger block size for really big files */
-static int adapt_block_size(struct file_struct *file, int bsize)
+void sig_int(void)
{
- int ret;
-
- if (bsize != BLOCK_SIZE) return bsize;
-
- ret = file->length / (10000); /* rough heuristic */
- ret = ret & ~15; /* multiple of 16 */
- if (ret < bsize) ret = bsize;
- if (ret > CHUNK_SIZE/2) ret = CHUNK_SIZE/2;
- return ret;
-}
-
-static void recv_generator(char *fname,struct file_list *flist,int i,int f_out)
-{
- int fd;
- STRUCT_STAT st;
- struct map_struct *buf;
- struct sum_struct *s;
- int statret;
- struct file_struct *file = flist->files[i];
-
- if (verbose > 2)
- rprintf(FINFO,"recv_generator(%s,%d)\n",fname,i);
-
- statret = link_stat(fname,&st);
-
- if (S_ISDIR(file->mode)) {
- if (dry_run) return;
- if (statret == 0 && !S_ISDIR(st.st_mode)) {
- if (do_unlink(fname) != 0) {
- rprintf(FERROR,"unlink %s : %s\n",fname,strerror(errno));
- return;
- }
- statret = -1;
- }
- if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) {
- if (!(relative_paths && errno==ENOENT &&
- create_directory_path(fname)==0 &&
- do_mkdir(fname,file->mode)==0)) {
- rprintf(FERROR,"mkdir %s : %s (2)\n",
- fname,strerror(errno));
- }
- }
- if (set_perms(fname,file,NULL,0) && verbose)
- rprintf(FINFO,"%s/\n",fname);
- return;
- }
-
- if (preserve_links && S_ISLNK(file->mode)) {
-#if SUPPORT_LINKS
- char lnk[MAXPATHLEN];
- int l;
- if (statret == 0) {
- l = readlink(fname,lnk,MAXPATHLEN-1);
- if (l > 0) {
- lnk[l] = 0;
- if (strcmp(lnk,file->link) == 0) {
- set_perms(fname,file,&st,1);
- return;
- }
- }
- }
- delete_file(fname);
- if (do_symlink(file->link,fname) != 0) {
- rprintf(FERROR,"link %s -> %s : %s\n",
- fname,file->link,strerror(errno));
- } else {
- set_perms(fname,file,NULL,0);
- if (verbose)
- rprintf(FINFO,"%s -> %s\n",
- fname,file->link);
- }
-#endif
- return;
- }
-
-#ifdef HAVE_MKNOD
- if (am_root && preserve_devices && IS_DEVICE(file->mode)) {
- if (statret != 0 ||
- st.st_mode != file->mode ||
- st.st_rdev != file->rdev) {
- delete_file(fname);
- if (verbose > 2)
- rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
- fname,(int)file->mode,(int)file->rdev);
- if (do_mknod(fname,file->mode,file->rdev) != 0) {
- rprintf(FERROR,"mknod %s : %s\n",fname,strerror(errno));
- } else {
- set_perms(fname,file,NULL,0);
- if (verbose)
- rprintf(FINFO,"%s\n",fname);
- }
- } else {
- set_perms(fname,file,&st,1);
- }
- return;
- }
-#endif
-
- if (preserve_hard_links && check_hard_link(file)) {
- if (verbose > 1)
- rprintf(FINFO,"%s is a hard link\n",f_name(file));
- return;
- }
-
- if (!S_ISREG(file->mode)) {
- rprintf(FINFO,"skipping non-regular file %s\n",fname);
- return;
- }
-
- if (statret == -1) {
- if (errno == ENOENT) {
- write_int(f_out,i);
- if (!dry_run) send_sums(NULL,f_out);
- } else {
- if (verbose > 1)
- rprintf(FERROR,"recv_generator failed to open %s\n",fname);
- }
- return;
- }
-
- if (!S_ISREG(st.st_mode)) {
- if (delete_file(fname) != 0) {
- return;
- }
-
- /* now pretend the file didn't exist */
- write_int(f_out,i);
- if (!dry_run) send_sums(NULL,f_out);
- return;
- }
-
- if (update_only && st.st_mtime > file->modtime) {
- if (verbose > 1)
- rprintf(FINFO,"%s is newer\n",fname);
- return;
- }
-
- if (skip_file(fname, file, &st)) {
- set_perms(fname,file,&st,1);
- return;
- }
-
- if (dry_run) {
- write_int(f_out,i);
- return;
- }
-
- if (whole_file) {
- write_int(f_out,i);
- send_sums(NULL,f_out);
- return;
- }
-
- /* open the file */
- fd = open(fname,O_RDONLY);
-
- if (fd == -1) {
- rprintf(FERROR,"failed to open %s : %s\n",fname,strerror(errno));
- rprintf(FERROR,"skipping %s\n",fname);
- return;
- }
-
- if (st.st_size > 0) {
- buf = map_file(fd,st.st_size);
- } else {
- buf = NULL;
- }
-
- if (verbose > 3)
- rprintf(FINFO,"gen mapped %s of size %d\n",fname,(int)st.st_size);
-
- s = generate_sums(buf,st.st_size,adapt_block_size(file, block_size));
-
- if (verbose > 2)
- rprintf(FINFO,"sending sums for %d\n",i);
-
- write_int(f_out,i);
- send_sums(s,f_out);
-
- close(fd);
- if (buf) unmap_file(buf);
-
- free_sums(s);
+ exit_cleanup(RERR_SIGNAL);
}
-
-
-static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
- OFF_T total_size)
+int make_backup(char *fname)
{
- int i,n,remainder,len,count;
- 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);
-
- if (i > 0) {
- if (verbose > 3) {
- rprintf(FINFO,"data recv %d at %d\n",
- i,(int)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);
- }
- offset += i;
- continue;
- }
-
- i = -(i+1);
- offset2 = i*n;
- len = n;
- if (i == count-1 && remainder != 0)
- len = 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);
- }
- offset += len;
- }
-
- end_progress();
-
- if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
- rprintf(FERROR,"write failed on %s : %s\n",
- fname,strerror(errno));
- exit_cleanup(1);
+ char fnamebak[MAXPATHLEN];
+ if (strlen(fname) + strlen(backup_suffix) > (MAXPATHLEN-1)) {
+ rprintf(FERROR,"backup filename too long\n");
+ return 0;
}
- 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) {
+ slprintf(fnamebak,sizeof(fnamebak),"%s%s",fname,backup_suffix);
+ if (do_rename(fname,fnamebak) != 0) {
+ /* cygwin (at least version b19) reports EINVAL */
+ if (errno != ENOENT && errno != EINVAL) {
+ rprintf(FERROR,"rename %s %s : %s\n",fname,fnamebak,strerror(errno));
return 0;
}
+ } else if (verbose > 1) {
+ rprintf(FINFO,"backed up %s to %s\n",fname,fnamebak);
}
return 1;
}
-static void delete_one(struct file_struct *f)
-{
- 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));
- }
- }
-}
-
-
-
-static struct delete_list {
- dev_t dev;
- ino_t inode;
-} *delete_list;
-static int dlist_len, dlist_alloc_len;
-
-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));
-}
-
-/* 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)
-{
- 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;
- }
-
- return 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)
-{
- struct file_list *local_file_list;
- int i, j;
- char *name;
-
- if (cvs_exclude)
- add_cvs_excludes();
-
- if (io_error) {
- 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;
-
- name = strdup(f_name(flist->files[j]));
-
- if (!(local_file_list = send_file_list(-1,1,&name))) {
- free(name);
- 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]);
- }
- }
- flist_free(local_file_list);
- free(name);
- }
-}
-
-void sig_int(void)
-{
- exit_cleanup(1);
-}
-
-
-
-
-static int get_tmpname(char *fnametmp, char *fname)
-{
- char *f;
-
- /* 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;
- }
- slprintf(fnametmp,MAXPATHLEN-1, "%s/.%s.XXXXXX",tmpdir,f);
- return 1;
- }
-
- f = strrchr(fname,'/');
-
- if (strlen(fname)+9 > MAXPATHLEN) {
- rprintf(FERROR,"filename too long\n");
- 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);
- }
-
- return 1;
-}
-
/* finish off a file transfer, renaming the file and setting the permissions
and ownership */
-static void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
+void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
{
- if (make_backups) {
- char fnamebak[MAXPATHLEN];
- if (strlen(fname) + strlen(backup_suffix) > (MAXPATHLEN-1)) {
- rprintf(FERROR,"backup filename too long\n");
- return;
- }
- slprintf(fnamebak,sizeof(fnamebak)-1,"%s%s",fname,backup_suffix);
- if (do_rename(fname,fnamebak) != 0 && errno != ENOENT) {
- rprintf(FERROR,"rename %s %s : %s\n",fname,fnamebak,strerror(errno));
- return;
- }
- }
+ if (make_backups && !make_backup(fname))
+ return;
/* move tmp file over real file */
- if (do_rename(fnametmp,fname) != 0) {
+ if (robust_rename(fnametmp,fname) != 0) {
if (errno == EXDEV) {
/* rename failed on cross-filesystem link.
Copy the file instead. */
- if (copy_file(fnametmp,fname, file->mode)) {
+ if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) {
rprintf(FERROR,"copy %s -> %s : %s\n",
fnametmp,fname,strerror(errno));
} else {
set_perms(fname,file,NULL,0);
}
- do_unlink(fnametmp);
} else {
rprintf(FERROR,"rename %s -> %s : %s\n",
fnametmp,fname,strerror(errno));
- do_unlink(fnametmp);
}
+ do_unlink(fnametmp);
} else {
set_perms(fname,file,NULL,0);
}
}
-int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
-{
- int fd1,fd2;
- STRUCT_STAT st;
- char *fname;
- char fnametmp[MAXPATHLEN];
- struct map_struct *buf;
- int i;
- struct file_struct *file;
- int phase=0;
- int recv_ok;
-
- if (verbose > 2) {
- rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
- }
-
- if (recurse && delete_mode && !local_name && flist->count>0) {
- delete_files(flist);
- }
-
- while (1) {
- cleanup_fname = NULL;
- cleanup_got_literal = 0;
-
- 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 (i < 0 || i >= flist->count) {
- rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
- i, flist->count);
- exit_cleanup(1);
- }
-
- file = flist->files[i];
- fname = f_name(file);
-
- stats.num_transferred_files++;
- stats.total_transferred_size += file->length;
-
- if (local_name)
- fname = local_name;
-
- if (dry_run) {
- if (!am_server && verbose)
- rprintf(FINFO,"%s\n",fname);
- continue;
- }
-
- if (verbose > 2)
- rprintf(FINFO,"recv_files(%s)\n",fname);
-
- /* open the file */
- fd1 = open(fname,O_RDONLY);
-
- if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
- rprintf(FERROR,"fstat %s : %s\n",fname,strerror(errno));
- 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",fname);
- 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",fname,(int)st.st_size);
- } else {
- buf = NULL;
- }
-
- if (!get_tmpname(fnametmp,fname)) {
- if (buf) unmap_file(buf);
- close(fd1);
- continue;
- }
-
- 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);
- close(fd1);
- continue;
- }
-
- /* 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);
- }
- 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);
- close(fd1);
- continue;
- }
-
- cleanup_fname = fnametmp;
- cleanup_new_fname = fname;
- cleanup_file = file;
-
- if (!am_server && verbose)
- rprintf(FINFO,"%s\n",fname);
-
- /* recv file data */
- recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
-
- if (buf) unmap_file(buf);
- if (fd1 != -1) {
- close(fd1);
- }
- close(fd2);
-
- if (verbose > 2)
- rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
-
- finish_transfer(fname, fnametmp, file);
-
- cleanup_fname = NULL;
-
- if (!recv_ok) {
- if (csum_length == SUM_LENGTH) {
- rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
- fname);
- } else {
- if (verbose > 1)
- rprintf(FINFO,"redoing %s(%d)\n",fname,i);
- write_int(f_gen,i);
- }
- }
- }
-
- 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 (verbose > 2)
- rprintf(FINFO,"recv_files finished\n");
-
- return 0;
-}
-
-
-
-void send_files(struct file_list *flist,int f_out,int f_in)
-{
- int fd;
- struct sum_struct *s;
- struct map_struct *buf;
- STRUCT_STAT st;
- char fname[MAXPATHLEN];
- int i;
- struct file_struct *file;
- int phase = 0;
-
- if (verbose > 2)
- rprintf(FINFO,"send_files starting\n");
-
- setup_readbuffer(f_in);
-
- while (1) {
- int offset=0;
-
- i = read_int(f_in);
- if (i == -1) {
- if (phase==0 && remote_version >= 13) {
- phase++;
- csum_length = SUM_LENGTH;
- write_int(f_out,-1);
- if (verbose > 2)
- rprintf(FINFO,"send_files phase=%d\n",phase);
- continue;
- }
- break;
- }
-
- if (i < 0 || i >= flist->count) {
- rprintf(FERROR,"Invalid file index %d (count=%d)\n",
- i, flist->count);
- exit_cleanup(1);
- }
-
- file = flist->files[i];
-
- stats.num_transferred_files++;
- stats.total_transferred_size += file->length;
-
- fname[0] = 0;
- if (file->basedir) {
- strlcpy(fname,file->basedir,MAXPATHLEN-1);
- if (strlen(fname) == MAXPATHLEN-1) {
- io_error = 1;
- rprintf(FERROR, "send_files failed on long-named directory %s\n",
- fname);
- return;
- }
- strlcat(fname,"/",MAXPATHLEN-1);
- offset = strlen(file->basedir)+1;
- }
- strlcat(fname,f_name(file),MAXPATHLEN-strlen(fname));
-
- if (verbose > 2)
- rprintf(FINFO,"send_files(%d,%s)\n",i,fname);
-
- if (dry_run) {
- if (!am_server && verbose)
- rprintf(FINFO,"%s\n",fname);
- write_int(f_out,i);
- continue;
- }
-
- s = receive_sums(f_in);
- if (!s) {
- io_error = 1;
- rprintf(FERROR,"receive_sums failed\n");
- return;
- }
-
- fd = open(fname,O_RDONLY);
- if (fd == -1) {
- io_error = 1;
- rprintf(FERROR,"send_files failed to open %s: %s\n",
- fname,strerror(errno));
- free_sums(s);
- continue;
- }
-
- /* map the local file */
- if (do_fstat(fd,&st) != 0) {
- io_error = 1;
- rprintf(FERROR,"fstat failed : %s\n",strerror(errno));
- free_sums(s);
- close(fd);
- return;
- }
-
- if (st.st_size > 0) {
- buf = map_file(fd,st.st_size);
- } else {
- buf = NULL;
- }
-
- if (verbose > 2)
- rprintf(FINFO,"send_files mapped %s of size %d\n",
- fname,(int)st.st_size);
-
- write_int(f_out,i);
-
- write_int(f_out,s->count);
- write_int(f_out,s->n);
- write_int(f_out,s->remainder);
-
- if (verbose > 2)
- rprintf(FINFO,"calling match_sums %s\n",fname);
-
- if (!am_server && verbose)
- rprintf(FINFO,"%s\n",fname+offset);
-
- match_sums(f_out,s,buf,st.st_size);
-
- if (buf) unmap_file(buf);
- close(fd);
-
- free_sums(s);
-
- if (verbose > 2)
- rprintf(FINFO,"sender finished %s\n",fname);
- }
-
- if (verbose > 2)
- rprintf(FINFO,"send files finished\n");
-
- match_report();
-
- write_int(f_out,-1);
-}
-
-
-
-void generate_files(int f,struct file_list *flist,char *local_name,int f_recv)
-{
- int i;
- int phase=0;
-
- if (verbose > 2)
- rprintf(FINFO,"generator starting pid=%d count=%d\n",
- (int)getpid(),flist->count);
-
- for (i = 0; i < flist->count; i++) {
- struct file_struct *file = flist->files[i];
- mode_t saved_mode = file->mode;
- if (!file->basename) continue;
-
- /* we need to ensure that any directories we create have writeable
- permissions initially so that we can create the files within
- them. This is then fixed after the files are transferred */
- if (!am_root && S_ISDIR(file->mode)) {
- file->mode |= S_IWUSR; /* user write */
- }
-
- recv_generator(local_name?local_name:f_name(file),
- flist,i,f);
-
- file->mode = saved_mode;
- }
-
- phase++;
- csum_length = SUM_LENGTH;
- ignore_times=1;
-
- if (verbose > 2)
- rprintf(FINFO,"generate_files phase=%d\n",phase);
-
- write_int(f,-1);
-
- /* we expect to just sit around now, so don't exit on a timeout. If we
- really get a timeout then the other process should exit */
- io_timeout = 0;
-
- if (remote_version >= 13) {
- /* in newer versions of the protocol the files can cycle through
- the system more than once to catch initial checksum errors */
- for (i=read_int(f_recv); i != -1; i=read_int(f_recv)) {
- struct file_struct *file = flist->files[i];
- recv_generator(local_name?local_name:f_name(file),
- flist,i,f);
- }
-
- phase++;
- if (verbose > 2)
- rprintf(FINFO,"generate_files phase=%d\n",phase);
-
- write_int(f,-1);
- }
-}
-
git.samba.org / rsync.git / blobdiff