| 1 | Added a pipe from the generator to the receiver that communicates |
| 2 | what basis file we used to generate the file data (if it was not |
| 3 | the default name). This optimizes away the basis-file search in |
| 4 | the receiver and makes future options that do more basis-file |
| 5 | searching more efficient (such as the --fuzzy option and the |
| 6 | support for multiple --compare-dest options). |
| 7 | |
| 8 | You must run "make proto" before compiling. |
| 9 | |
| 10 | --- orig/generator.c 2004-07-15 02:21:10 |
| 11 | +++ generator.c 2004-07-03 20:08:07 |
| 12 | @@ -248,7 +248,7 @@ static void generate_and_send_sums(struc |
| 13 | * out. It might be wrong. |
| 14 | */ |
| 15 | static void recv_generator(char *fname, struct file_struct *file, int i, |
| 16 | - int f_out) |
| 17 | + int f_out, int f_nameout) |
| 18 | { |
| 19 | int fd; |
| 20 | STRUCT_STAT st; |
| 21 | @@ -415,8 +415,10 @@ static void recv_generator(char *fname, |
| 22 | statret = link_stat(fnamecmpbuf, &st, 0); |
| 23 | if (!S_ISREG(st.st_mode)) |
| 24 | statret = -1; |
| 25 | - if (statret == -1) |
| 26 | + if (statret < 0) { |
| 27 | errno = saveerrno; |
| 28 | + *fnamecmpbuf = '\0'; |
| 29 | + } |
| 30 | #if HAVE_LINK |
| 31 | else if (link_dest && !dry_run) { |
| 32 | if (do_link(fnamecmpbuf, fname) != 0) { |
| 33 | @@ -424,18 +426,22 @@ static void recv_generator(char *fname, |
| 34 | rsyserr(FINFO, errno, "link %s => %s", |
| 35 | fnamecmpbuf, fname); |
| 36 | } |
| 37 | - } |
| 38 | - fnamecmp = fnamecmpbuf; |
| 39 | + fnamecmp = fnamecmpbuf; |
| 40 | + } else |
| 41 | + *fnamecmpbuf = '\0'; |
| 42 | } |
| 43 | #endif |
| 44 | else |
| 45 | fnamecmp = fnamecmpbuf; |
| 46 | - } |
| 47 | + } else |
| 48 | + *fnamecmpbuf = '\0'; |
| 49 | |
| 50 | if (statret == -1) { |
| 51 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
| 52 | return; |
| 53 | if (errno == ENOENT) { |
| 54 | + if (f_nameout >= 0) |
| 55 | + write(f_nameout, "", 1); |
| 56 | write_int(f_out,i); |
| 57 | if (!dry_run) |
| 58 | write_sum_head(f_out, NULL); |
| 59 | @@ -455,19 +461,21 @@ static void recv_generator(char *fname, |
| 60 | /* now pretend the file didn't exist */ |
| 61 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
| 62 | return; |
| 63 | + if (f_nameout >= 0) |
| 64 | + write(f_nameout, "", 1); |
| 65 | write_int(f_out,i); |
| 66 | if (!dry_run) |
| 67 | write_sum_head(f_out, NULL); |
| 68 | return; |
| 69 | } |
| 70 | |
| 71 | - if (opt_ignore_existing && fnamecmp == fname) { |
| 72 | + if (opt_ignore_existing && !*fnamecmpbuf) { |
| 73 | if (verbose > 1) |
| 74 | rprintf(FINFO,"%s exists\n",fname); |
| 75 | return; |
| 76 | } |
| 77 | |
| 78 | - if (update_only && fnamecmp == fname |
| 79 | + if (update_only && !*fnamecmpbuf |
| 80 | && cmp_modtime(st.st_mtime, file->modtime) > 0) { |
| 81 | if (verbose > 1) |
| 82 | rprintf(FINFO,"%s is newer\n",fname); |
| 83 | @@ -475,17 +483,21 @@ static void recv_generator(char *fname, |
| 84 | } |
| 85 | |
| 86 | if (skip_file(fname, file, &st)) { |
| 87 | - if (fnamecmp == fname) |
| 88 | + if (!*fnamecmpbuf) |
| 89 | set_perms(fname, file, &st, PERMS_REPORT); |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | if (dry_run) { |
| 94 | + if (f_nameout >= 0) |
| 95 | + write(f_nameout, "", 1); |
| 96 | write_int(f_out,i); |
| 97 | return; |
| 98 | } |
| 99 | |
| 100 | if (whole_file > 0) { |
| 101 | + if (f_nameout >= 0) |
| 102 | + write(f_nameout, "", 1); |
| 103 | write_int(f_out,i); |
| 104 | write_sum_head(f_out, NULL); |
| 105 | return; |
| 106 | @@ -500,6 +512,8 @@ static void recv_generator(char *fname, |
| 107 | /* pretend the file didn't exist */ |
| 108 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
| 109 | return; |
| 110 | + if (f_nameout >= 0) |
| 111 | + write(f_nameout, "", 1); |
| 112 | write_int(f_out,i); |
| 113 | write_sum_head(f_out, NULL); |
| 114 | return; |
| 115 | @@ -518,6 +532,8 @@ static void recv_generator(char *fname, |
| 116 | if (verbose > 2) |
| 117 | rprintf(FINFO, "generating and sending sums for %d\n", i); |
| 118 | |
| 119 | + if (f_nameout >= 0) |
| 120 | + write(f_nameout, fnamecmpbuf, strlen(fnamecmpbuf) + 1); |
| 121 | write_int(f_out,i); |
| 122 | generate_and_send_sums(mapbuf, st.st_size, f_out); |
| 123 | |
| 124 | @@ -527,7 +543,8 @@ static void recv_generator(char *fname, |
| 125 | } |
| 126 | |
| 127 | |
| 128 | -void generate_files(int f_out, struct file_list *flist, char *local_name) |
| 129 | +void generate_files(int f_out, struct file_list *flist, char *local_name, |
| 130 | + int f_nameout) |
| 131 | { |
| 132 | int i; |
| 133 | int phase = 0; |
| 134 | @@ -568,7 +585,7 @@ void generate_files(int f_out, struct fi |
| 135 | } |
| 136 | |
| 137 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
| 138 | - file, i, f_out); |
| 139 | + file, i, f_out, f_nameout); |
| 140 | } |
| 141 | |
| 142 | phase++; |
| 143 | @@ -585,7 +602,7 @@ void generate_files(int f_out, struct fi |
| 144 | while ((i = get_redo_num()) != -1) { |
| 145 | struct file_struct *file = flist->files[i]; |
| 146 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
| 147 | - file, i, f_out); |
| 148 | + file, i, f_out, f_nameout); |
| 149 | } |
| 150 | |
| 151 | phase++; |
| 152 | @@ -604,7 +621,7 @@ void generate_files(int f_out, struct fi |
| 153 | if (!file->basename || !S_ISDIR(file->mode)) |
| 154 | continue; |
| 155 | recv_generator(local_name ? local_name : f_name(file), |
| 156 | - file, i, -1); |
| 157 | + file, i, -1, -1); |
| 158 | } |
| 159 | |
| 160 | if (verbose > 2) |
| 161 | --- orig/main.c 2004-07-15 17:02:03 |
| 162 | +++ main.c 2004-07-03 20:08:07 |
| 163 | @@ -443,7 +443,7 @@ static int do_recv(int f_in,int f_out,st |
| 164 | { |
| 165 | int pid; |
| 166 | int status = 0; |
| 167 | - int error_pipe[2]; |
| 168 | + int error_pipe[2], name_pipe[2]; |
| 169 | |
| 170 | if (preserve_hard_links) |
| 171 | init_hard_links(flist); |
| 172 | @@ -455,8 +455,8 @@ static int do_recv(int f_in,int f_out,st |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | - if (fd_pair(error_pipe) < 0) { |
| 177 | - rprintf(FERROR,"error pipe failed in do_recv\n"); |
| 178 | + if (fd_pair(error_pipe) < 0 || fd_pair(name_pipe) < 0) { |
| 179 | + rprintf(FERROR, "fd_pair() failed in do_recv\n"); |
| 180 | exit_cleanup(RERR_SOCKETIO); |
| 181 | } |
| 182 | |
| 183 | @@ -464,8 +464,10 @@ static int do_recv(int f_in,int f_out,st |
| 184 | |
| 185 | if ((pid = do_fork()) == 0) { |
| 186 | close(error_pipe[0]); |
| 187 | + close(name_pipe[1]); |
| 188 | if (f_in != f_out) |
| 189 | close(f_out); |
| 190 | + set_blocking(name_pipe[0]); |
| 191 | |
| 192 | /* we can't let two processes write to the socket at one time */ |
| 193 | io_multiplexing_close(); |
| 194 | @@ -473,7 +475,7 @@ static int do_recv(int f_in,int f_out,st |
| 195 | /* set place to send errors */ |
| 196 | set_msg_fd_out(error_pipe[1]); |
| 197 | |
| 198 | - recv_files(f_in,flist,local_name); |
| 199 | + recv_files(f_in, flist, local_name, name_pipe[0]); |
| 200 | io_flush(FULL_FLUSH); |
| 201 | report(f_in); |
| 202 | |
| 203 | @@ -491,14 +493,16 @@ static int do_recv(int f_in,int f_out,st |
| 204 | stop_write_batch(); |
| 205 | |
| 206 | close(error_pipe[1]); |
| 207 | + close(name_pipe[0]); |
| 208 | if (f_in != f_out) |
| 209 | close(f_in); |
| 210 | + set_blocking(name_pipe[1]); |
| 211 | |
| 212 | io_start_buffering_out(f_out); |
| 213 | |
| 214 | set_msg_fd_in(error_pipe[0]); |
| 215 | |
| 216 | - generate_files(f_out, flist, local_name); |
| 217 | + generate_files(f_out, flist, local_name, name_pipe[1]); |
| 218 | |
| 219 | get_redo_num(); /* Read final MSG_DONE and any prior messages. */ |
| 220 | report(-1); |
| 221 | --- orig/receiver.c 2004-07-14 17:12:06 |
| 222 | +++ receiver.c 2004-07-03 20:08:07 |
| 223 | @@ -289,14 +289,15 @@ static int receive_data(int f_in,struct |
| 224 | * main routine for receiver process. |
| 225 | * |
| 226 | * Receiver process runs on the same host as the generator process. */ |
| 227 | -int recv_files(int f_in, struct file_list *flist, char *local_name) |
| 228 | +int recv_files(int f_in, struct file_list *flist, char *local_name, |
| 229 | + int f_name) |
| 230 | { |
| 231 | int fd1,fd2; |
| 232 | STRUCT_STAT st; |
| 233 | char *fname, fbuf[MAXPATHLEN]; |
| 234 | char template[MAXPATHLEN]; |
| 235 | char fnametmp[MAXPATHLEN]; |
| 236 | - char *fnamecmp; |
| 237 | + char *fnamecmp, *cp; |
| 238 | char fnamecmpbuf[MAXPATHLEN]; |
| 239 | struct map_struct *mapbuf; |
| 240 | struct file_struct *file; |
| 241 | @@ -358,19 +359,19 @@ int recv_files(int f_in, struct file_lis |
| 242 | if (verbose > 2) |
| 243 | rprintf(FINFO,"recv_files(%s)\n",fname); |
| 244 | |
| 245 | - fnamecmp = fname; |
| 246 | + for (cp = fnamecmpbuf; ; cp++) { |
| 247 | + if (read(f_name, cp, 1) <= 0) { |
| 248 | + rsyserr(FERROR, errno, "fname-pipe read failed"); |
| 249 | + exit_cleanup(RERR_PROTOCOL); |
| 250 | + } |
| 251 | + if (!*cp) |
| 252 | + break; |
| 253 | + } |
| 254 | + fnamecmp = *fnamecmpbuf ? fnamecmpbuf : fname; |
| 255 | |
| 256 | /* open the file */ |
| 257 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 258 | |
| 259 | - if (fd1 == -1 && compare_dest != NULL) { |
| 260 | - /* try the file at compare_dest instead */ |
| 261 | - pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, |
| 262 | - compare_dest, fname); |
| 263 | - fnamecmp = fnamecmpbuf; |
| 264 | - fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 265 | - } |
| 266 | - |
| 267 | if (fd1 != -1 && do_fstat(fd1,&st) != 0) { |
| 268 | rsyserr(FERROR, errno, "fstat %s failed", |
| 269 | full_fname(fnamecmp)); |
| 270 | @@ -379,7 +380,7 @@ int recv_files(int f_in, struct file_lis |
| 271 | continue; |
| 272 | } |
| 273 | |
| 274 | - if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) { |
| 275 | + if (fd1 != -1 && S_ISDIR(st.st_mode) && !*fnamecmpbuf) { |
| 276 | /* this special handling for directories |
| 277 | * wouldn't be necessary if robust_rename() |
| 278 | * and the underlying robust_unlink could cope |