X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/8060514230c598945923397398e59d27688b845e..52d3e10613fe75f02bebf30d66a768c815a40aae:/generator.c diff --git a/generator.c b/generator.c index dd3eef66..3552887e 100644 --- a/generator.c +++ b/generator.c @@ -1,21 +1,21 @@ /* -*- c-file-style: "linux" -*- rsync -- fast file replication program - - Copyright (C) 1996-2000 by Andrew Tridgell + + Copyright (C) 1996-2000 by Andrew Tridgell Copyright (C) Paul Mackerras 1996 Copyright (C) 2002 by Martin Pool - + 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. @@ -41,6 +41,7 @@ extern int remote_version; extern int always_checksum; extern int modify_window; extern char *compare_dest; +extern int link_dest; /* choose whether to skip a particular file */ @@ -50,8 +51,16 @@ static int skip_file(char *fname, if (st->st_size != file->length) { return 0; } - - /* if always checksum is set then we use the checksum instead + if (link_dest) { + if((st->st_mode & ~_S_IFMT) != (file->mode & ~_S_IFMT)) { + return 0; + } + if (st->st_uid != file->uid || st->st_gid != file->gid) { + 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]; @@ -60,7 +69,7 @@ static int skip_file(char *fname, if (compare_dest != NULL) { if (access(fname, 0) != 0) { snprintf(fnamecmpdest,MAXPATHLEN,"%s/%s", - compare_dest,fname); + compare_dest,fname); fname = fnamecmpdest; } } @@ -122,22 +131,15 @@ static void send_null_sums(int f_out) * Whew. */ static BOOL disable_deltas_p(void) { - extern int whole_file, no_whole_file; + extern int whole_file; extern int local_server; extern int write_batch; - assert(whole_file == 0 || whole_file == 1); - - /* whole_file and no_whole_file are never both on at the same time */ - - if (whole_file) + if (whole_file > 0) return True; - else if (no_whole_file) - return False; - else if (write_batch) + if (whole_file == 0 || write_batch) return False; - else - return local_server; + return local_server; } @@ -198,9 +200,9 @@ static void generate_and_send_sums(struct map_struct *buf, OFF_T len, * * @note This comment was added later by mbp who was trying to work it * out. It might be wrong. - **/ + **/ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) -{ +{ int fd; STRUCT_STAT st; struct map_struct *buf; @@ -227,43 +229,43 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) return; } - if (statret == 0 && - !preserve_perms && + if (statret == 0 && + !preserve_perms && (S_ISDIR(st.st_mode) == S_ISDIR(file->mode))) { /* if the file exists already and we aren't perserving - presmissions then act as though the remote end sent - us the file permissions we already have */ + * permissions then act as though the remote end sent + * us the file permissions we already have */ file->mode = (file->mode & _S_IFMT) | (st.st_mode & ~_S_IFMT); } if (S_ISDIR(file->mode)) { - /* The file to be received is a directory, so we need - * to prepare appropriately. If there is already a - * file of that name and it is *not* a directory, then - * we need to delete it. If it doesn't exist, then - * recursively create it. */ - + /* The file to be received is a directory, so we need + * to prepare appropriately. If there is already a + * file of that name and it is *not* a directory, then + * we need to delete it. If it doesn't exist, then + * recursively create it. */ + if (dry_run) return; /* XXXX -- might cause inaccuracies?? -- mbp */ if (statret == 0 && !S_ISDIR(st.st_mode)) { if (robust_unlink(fname) != 0) { rprintf(FERROR, RSYNC_NAME ": recv_generator: unlink \"%s\" to make room for directory: %s\n", - fname,strerror(errno)); + 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, orig_umask)==0 && + if (!(relative_paths && errno==ENOENT && + create_directory_path(fname, orig_umask)==0 && do_mkdir(fname,file->mode)==0)) { rprintf(FERROR, RSYNC_NAME ": recv_generator: mkdir \"%s\": %s (2)\n", fname,strerror(errno)); } } - /* f_out is set to -1 when doing final directory + /* f_out is set to -1 when doing final directory permission and modification time repair */ - if (set_perms(fname,file,NULL,0) && verbose && (f_out != -1)) + if (set_perms(fname,file,NULL,0) && verbose && (f_out != -1)) rprintf(FINFO,"%s/\n",fname); return; } @@ -292,10 +294,10 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) set_perms(fname,file,&st,1); return; } - } + } /* Not a symlink, so delete whatever's * already there and put a new symlink - * in place. */ + * in place. */ delete_file(fname); } if (do_symlink(file->link,fname) != 0) { @@ -313,9 +315,9 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) #ifdef HAVE_MKNOD if (am_root && preserve_devices && IS_DEVICE(file->mode)) { - if (statret != 0 || + if (statret != 0 || st.st_mode != file->mode || - st.st_rdev != file->rdev) { + st.st_rdev != file->rdev) { delete_file(fname); if (verbose > 2) rprintf(FINFO,"mknod(%s,0%o,0x%x)\n", @@ -356,6 +358,18 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) statret = -1; if (statret == -1) errno = saveerrno; +#if HAVE_LINK + else if (link_dest && !dry_run) { + if (do_link(fnamecmpbuf, fname) != 0) { + if (verbose > 0) + rprintf(FINFO,"link %s => %s : %s\n", + fnamecmpbuf, + fname, + strerror(errno)); + } + fnamecmp = fnamecmpbuf; + } +#endif else fnamecmp = fnamecmpbuf; } @@ -384,11 +398,11 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) return; } - if (opt_ignore_existing && fnamecmp == fname) { + if (opt_ignore_existing && fnamecmp == fname) { if (verbose > 1) rprintf(FINFO,"%s exists\n",fname); return; - } + } if (update_only && cmp_modtime(st.st_mtime,file->modtime)>0 && fnamecmp == fname) { if (verbose > 1) @@ -413,7 +427,7 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out) return; } - /* open the file */ + /* open the file */ fd = do_open(fnamecmp, O_RDONLY, 0); if (fd == -1) { @@ -457,11 +471,11 @@ void generate_files(int f,struct file_list *flist,char *local_name,int f_recv) if (verbose >= 2) { rprintf(FINFO, - disable_deltas_p() + disable_deltas_p() ? "delta-transmission disabled for local transfer or --whole-file\n" : "delta transmission enabled\n"); } - + /* 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 */ @@ -477,12 +491,11 @@ void generate_files(int f,struct file_list *flist,char *local_name,int f_recv) them. This is then fixed after the files are transferred */ if (!am_root && S_ISDIR(file->mode)) { file->mode |= S_IWUSR; /* user write */ - /* XXX: Could this be causing a problem on SCO? Perhaps their - * handling of permissions is strange? */ + /* XXX: Could this be causing a problem on SCO? Perhaps their + * handling of permissions is strange? */ } - recv_generator(local_name?local_name:f_name(file), - flist,i,f); + recv_generator(local_name?local_name:f_name(file), flist,i,f); file->mode = saved_mode; } @@ -502,7 +515,7 @@ void generate_files(int f,struct file_list *flist,char *local_name,int f_recv) 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); + flist,i,f); } phase++;