X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/58d433ab3cbf7dd3010a0944dc579756dfd89ad7..cbbe4892087b74fb8ed2aac6078ee933ac02e920:/main.c

diff --git a/main.c b/main.c
index 721fdbb7..ce5490ac 100644
--- a/main.c
+++ b/main.c
@@ -31,6 +31,7 @@ static char *rsync_path = RSYNC_NAME;
 
 int make_backups = 0;
 int preserve_links = 0;
+int preserve_hard_links = 0;
 int preserve_perms = 0;
 int preserve_devices = 0;
 int preserve_uid = 0;
@@ -43,6 +44,14 @@ int local_server=0;
 int ignore_times=0;
 int delete_mode=0;
 int one_file_system=0;
+int remote_version=0;
+int sparse_files=0;
+int do_compression=0;
+int am_root=0;
+int orig_umask=0;
+int relative_paths=0;
+
+extern int csum_length;
 
 int am_server = 0;
 static int sender = 0;
@@ -106,6 +115,8 @@ static void server_options(char **args,int *argc)
     argstr[x++] = 'n';
   if (preserve_links)
     argstr[x++] = 'l';
+  if (preserve_hard_links)
+    argstr[x++] = 'H';
   if (preserve_uid)
     argstr[x++] = 'o';
   if (preserve_gid)
@@ -124,8 +135,14 @@ static void server_options(char **args,int *argc)
     argstr[x++] = 'C';
   if (ignore_times)
     argstr[x++] = 'I';
+  if (relative_paths)
+    argstr[x++] = 'R';
   if (one_file_system)
     argstr[x++] = 'x';
+  if (sparse_files)
+    argstr[x++] = 'S';
+  if (do_compression)
+    argstr[x++] = 'z';
   argstr[x] = 0;
 
   if (x != 1) args[ac++] = argstr;
@@ -134,7 +151,7 @@ static void server_options(char **args,int *argc)
     sprintf(bsize,"-B%d",block_size);
     args[ac++] = bsize;
   }    
-  
+
   if (delete_mode)
     args[ac++] = "--delete";
 
@@ -162,11 +179,20 @@ int do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
       args[argc++] = tok;
     }
 
+#if HAVE_REMSH
+    /* remsh (on HPUX) takes the arguments the other way around */
+    args[argc++] = machine;
+    if (user) {
+      args[argc++] = "-l";
+      args[argc++] = user;
+    }
+#else
     if (user) {
       args[argc++] = "-l";
       args[argc++] = user;
     }
     args[argc++] = machine;
+#endif
   }
 
   args[argc++] = rsync_path;
@@ -176,9 +202,12 @@ int do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
   if (path && *path) {
     char *dir = strdup(path);
     p = strrchr(dir,'/');
-    if (p) {
+    if (p && !relative_paths) {
       *p = 0;
-      args[argc++] = dir;
+      if (!dir[0])
+	args[argc++] = "/";
+      else
+	args[argc++] = dir;
       p++;
     } else {
       args[argc++] = ".";
@@ -191,10 +220,10 @@ int do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
   args[argc] = NULL;
 
   if (verbose > 3) {
-    fprintf(stderr,"cmd=");
+    fprintf(FERROR,"cmd=");
     for (i=0;i<argc;i++)
-      fprintf(stderr,"%s ",args[i]);
-    fprintf(stderr,"\n");
+      fprintf(FERROR,"%s ",args[i]);
+    fprintf(FERROR,"\n");
   }
 
   return piped_child(args,f_in,f_out);
@@ -214,14 +243,14 @@ static char *get_local_name(struct file_list *flist,char *name)
   if (stat(name,&st) == 0) {
     if (S_ISDIR(st.st_mode)) {
       if (chdir(name) != 0) {
-	fprintf(stderr,"chdir %s : %s\n",name,strerror(errno));
-	exit(1);
+	fprintf(FERROR,"chdir %s : %s (1)\n",name,strerror(errno));
+	exit_cleanup(1);
       }
       return NULL;
     }
     if (flist->count > 1) {
-      fprintf(stderr,"ERROR: destination must be a directory when copying more than 1 file\n");
-      exit(1);
+      fprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n");
+      exit_cleanup(1);
     }
     return name;
   }
@@ -232,16 +261,16 @@ static char *get_local_name(struct file_list *flist,char *name)
   if (!name) 
     return NULL;
 
-  if (mkdir(name,0777) != 0) {
-    fprintf(stderr,"mkdir %s : %s\n",name,strerror(errno));
-    exit(1);
+  if (mkdir(name,0777 & ~orig_umask) != 0) {
+    fprintf(FERROR,"mkdir %s : %s (1)\n",name,strerror(errno));
+    exit_cleanup(1);
   } else {
-    fprintf(am_server?stderr:stdout,"created directory %s\n",name);
+    fprintf(FINFO,"created directory %s\n",name);
   }
 
   if (chdir(name) != 0) {
-    fprintf(stderr,"chdir %s : %s\n",name,strerror(errno));
-    exit(1);
+    fprintf(FERROR,"chdir %s : %s (2)\n",name,strerror(errno));
+    exit_cleanup(1);
   }
 
   return NULL;
@@ -257,17 +286,19 @@ void do_server_sender(int argc,char *argv[])
   struct file_list *flist;
 
   if (verbose > 2)
-    fprintf(stderr,"server_sender starting pid=%d\n",(int)getpid());
+    fprintf(FERROR,"server_sender starting pid=%d\n",(int)getpid());
   
-  if (chdir(dir) != 0) {
-    fprintf(stderr,"chdir %s: %s\n",dir,strerror(errno));
-    exit(1);
+  if (!relative_paths && chdir(dir) != 0) {
+    fprintf(FERROR,"chdir %s: %s (3)\n",dir,strerror(errno));
+    exit_cleanup(1);
   }
   argc--;
   argv++;
   
   if (strcmp(dir,".")) {
     int l = strlen(dir);
+    if (strcmp(dir,"/") == 0) 
+      l = 0;
     for (i=0;i<argc;i++)
       argv[i] += l+1;
   }
@@ -279,31 +310,60 @@ void do_server_sender(int argc,char *argv[])
   }
     
 
-  flist = send_file_list(STDOUT_FILENO,recurse,argc,argv);
+  flist = send_file_list(STDOUT_FILENO,argc,argv);
   send_files(flist,STDOUT_FILENO,STDIN_FILENO);
   report(STDOUT_FILENO);
-  exit(0);
+  exit_cleanup(0);
 }
 
 
+static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name)
+{
+  int pid;
+  int status=0;
+  int recv_pipe[2];
+
+  if (preserve_hard_links)
+    init_hard_links(flist);
+
+  if (pipe(recv_pipe) < 0) {
+    fprintf(FERROR,"pipe failed in do_recv\n");
+    exit(1);
+  }
+  
+
+  if ((pid=fork()) == 0) {
+    recv_files(f_in,flist,local_name,recv_pipe[1]);
+    if (verbose > 2)
+      fprintf(FERROR,"receiver read %d\n",read_total());
+    exit_cleanup(0);
+  }
+
+  generate_files(f_out,flist,local_name,recv_pipe[0]);
+
+  waitpid(pid, &status, 0);
+
+  return status;
+}
+
 
 void do_server_recv(int argc,char *argv[])
 {
-  int pid,status;
+  int status;
   char *dir = NULL;
   struct file_list *flist;
   char *local_name=NULL;
   
   if (verbose > 2)
-    fprintf(stderr,"server_recv(%d) starting pid=%d\n",argc,(int)getpid());
+    fprintf(FERROR,"server_recv(%d) starting pid=%d\n",argc,(int)getpid());
 
   if (argc > 0) {
     dir = argv[0];
     argc--;
     argv++;
     if (chdir(dir) != 0) {
-      fprintf(stderr,"chdir %s : %s\n",dir,strerror(errno));
-      exit(1);
+      fprintf(FERROR,"chdir %s : %s (4)\n",dir,strerror(errno));
+      exit_cleanup(1);
     }    
   }
 
@@ -312,8 +372,8 @@ void do_server_recv(int argc,char *argv[])
 
   flist = recv_file_list(STDIN_FILENO);
   if (!flist || flist->count == 0) {
-    fprintf(stderr,"nothing to do\n");
-    exit(1);
+    fprintf(FERROR,"nothing to do\n");
+    exit_cleanup(1);
   }
 
   if (argc > 0) {    
@@ -324,17 +384,8 @@ void do_server_recv(int argc,char *argv[])
     local_name = get_local_name(flist,argv[0]);
   }
 
-  if ((pid=fork()) == 0) {
-    recv_files(STDIN_FILENO,flist,local_name);
-    if (verbose > 2)
-      fprintf(stderr,"receiver read %d\n",read_total());
-    exit(0);
-  }
-
-  generate_files(STDOUT_FILENO,flist,local_name);
-
-  waitpid(pid, &status, 0);
-  exit(status);
+  status = do_recv(STDIN_FILENO,STDOUT_FILENO,flist,local_name);
+  exit_cleanup(status);
 }
 
 
@@ -349,14 +400,17 @@ static void usage(FILE *f)
   fprintf(f,"-c, --checksum           always checksum\n");
   fprintf(f,"-a, --archive            archive mode (same as -rlptDog)\n");
   fprintf(f,"-r, --recursive          recurse into directories\n");
+  fprintf(f,"-R, --relative           use relative path names\n");
   fprintf(f,"-b, --backup             make backups (default ~ extension)\n");
   fprintf(f,"-u, --update             update only (don't overwrite newer files)\n");
   fprintf(f,"-l, --links              preserve soft links\n");
+  fprintf(f,"-H, --hard-links         preserve hard links\n");
   fprintf(f,"-p, --perms              preserve permissions\n");
   fprintf(f,"-o, --owner              preserve owner (root only)\n");
   fprintf(f,"-g, --group              preserve group\n");
   fprintf(f,"-D, --devices            preserve devices (root only)\n");
   fprintf(f,"-t, --times              preserve times\n");  
+  fprintf(f,"-S, --sparse             handle sparse files efficiently\n");
   fprintf(f,"-n, --dry-run            show what would have been transferred\n");
   fprintf(f,"-x, --one-file-system    don't cross filesystem boundaries\n");
   fprintf(f,"-B, --block-size SIZE    checksum blocking size\n");  
@@ -365,6 +419,7 @@ static void usage(FILE *f)
   fprintf(f,"-C, --cvs-exclude        auto ignore files in the same way CVS does\n");
   fprintf(f,"    --delete             delete files that don't exist on the sending side\n");
   fprintf(f,"-I, --ignore-times       don't exclude files that match length and time\n");
+  fprintf(f,"-z, --compress           compress file data\n");
   fprintf(f,"    --exclude FILE       exclude file FILE\n");
   fprintf(f,"    --exclude-from FILE  exclude files listed in FILE\n");
   fprintf(f,"    --suffix SUFFIX      override backup suffix\n");  
@@ -378,7 +433,7 @@ static void usage(FILE *f)
 enum {OPT_VERSION,OPT_SUFFIX,OPT_SENDER,OPT_SERVER,OPT_EXCLUDE,
       OPT_EXCLUDE_FROM,OPT_DELETE,OPT_RSYNC_PATH};
 
-static char *short_options = "oblpguDCtcahvrIxne:B:";
+static char *short_options = "oblHpguDCtcahvrRIxnSe:B:z";
 
 static struct option long_options[] = {
   {"version",     0,     0,    OPT_VERSION},
@@ -392,6 +447,7 @@ static struct option long_options[] = {
   {"ignore-times",0,     0,    'I'},
   {"help",        0,     0,    'h'},
   {"dry-run",     0,     0,    'n'},
+  {"sparse",      0,     0,    'S'},
   {"cvs-exclude", 0,     0,    'C'},
   {"archive",     0,     0,    'a'},
   {"checksum",    0,     0,    'c'},
@@ -399,20 +455,23 @@ static struct option long_options[] = {
   {"update",      0,     0,    'u'},
   {"verbose",     0,     0,    'v'},
   {"recursive",   0,     0,    'r'},
+  {"relative",    0,     0,    'R'},
   {"devices",     0,     0,    'D'},
   {"perms",       0,     0,    'p'},
   {"links",       0,     0,    'l'},
+  {"hard-links",  0,     0,    'H'},
   {"owner",       0,     0,    'o'},
   {"group",       0,     0,    'g'},
   {"times",       0,     0,    't'},
   {"rsh",         1,     0,    'e'},
   {"suffix",      1,     0,    OPT_SUFFIX},
   {"block-size",  1,     0,    'B'},
+  {"compress",	  0,	 0,    'z'},
   {0,0,0,0}};
 
 int main(int argc,char *argv[])
 {
-    int pid, status, pid2, status2;
+    int pid, status = 0, status2 = 0;
     int opt;
     int option_index;
     char *shell_cmd = NULL;
@@ -425,6 +484,11 @@ int main(int argc,char *argv[])
     char *local_name = NULL;
 
     starttime = time(NULL);
+    am_root = (getuid() == 0);
+
+    /* we set a 0 umask so that correct file permissions can be
+       carried across */
+    orig_umask = umask(0);
 
     while ((opt = getopt_long(argc, argv, 
 			      short_options, long_options, &option_index)) 
@@ -434,7 +498,7 @@ int main(int argc,char *argv[])
 	case OPT_VERSION:
 	  printf("rsync version %s  protocol version %d\n",
 		 VERSION,PROTOCOL_VERSION);
-	  exit(0);
+	  exit_cleanup(0);
 
 	case OPT_SUFFIX:
 	  backup_suffix = optarg;
@@ -465,8 +529,8 @@ int main(int argc,char *argv[])
 	  break;
 
 	case 'h':
-	  usage(stdout);
-	  exit(0);
+	  usage(FINFO);
+	  exit_cleanup(0);
 
 	case 'b':
 	  make_backups=1;
@@ -476,6 +540,10 @@ int main(int argc,char *argv[])
 	  dry_run=1;
 	  break;
 
+	case 'S':
+	  sparse_files=1;
+	  break;
+
 	case 'C':
 	  cvs_exclude=1;
 	  break;
@@ -484,23 +552,25 @@ int main(int argc,char *argv[])
 	  update_only=1;
 	  break;
 
-#if SUPPORT_LINKS
 	case 'l':
 	  preserve_links=1;
 	  break;
+
+	case 'H':
+#if SUPPORT_HARD_LINKS
+	  preserve_hard_links=1;
+#else 
+	  fprintf(FERROR,"ERROR: hard links not supported on this platform\n");
+	  exit_cleanup(1);
 #endif
+	  break;
 
 	case 'p':
 	  preserve_perms=1;
 	  break;
 
 	case 'o':
-	  if (getuid() == 0) {
-	    preserve_uid=1;
-	  } else {
-	    fprintf(stderr,"-o only allowed for root\n");
-	    exit(1);
-	  }
+	  preserve_uid=1;
 	  break;
 
 	case 'g':
@@ -508,12 +578,7 @@ int main(int argc,char *argv[])
 	  break;
 
 	case 'D':
-	  if (getuid() == 0) {
-	    preserve_devices=1;
-	  } else {
-	    fprintf(stderr,"-D only allowed for root\n");
-	    exit(1);
-	  }
+	  preserve_devices=1;
 	  break;
 
 	case 't':
@@ -536,10 +601,10 @@ int main(int argc,char *argv[])
 	  preserve_perms=1;
 	  preserve_times=1;
 	  preserve_gid=1;
-	  if (getuid() == 0) {
+	  if (am_root) {
 	    preserve_devices=1;
 	    preserve_uid=1;
-	  }	    
+	  }
 	  break;
 
 	case OPT_SERVER:
@@ -548,8 +613,8 @@ int main(int argc,char *argv[])
 
 	case OPT_SENDER:
 	  if (!am_server) {
-	    usage(stderr);
-	    exit(1);
+	    usage(FERROR);
+	    exit_cleanup(1);
 	  }
 	  sender = 1;
 	  break;
@@ -558,6 +623,10 @@ int main(int argc,char *argv[])
 	  recurse = 1;
 	  break;
 
+	case 'R':
+	  relative_paths = 1;
+	  break;
+
 	case 'e':
 	  shell_cmd = optarg;
 	  break;
@@ -566,9 +635,13 @@ int main(int argc,char *argv[])
 	  block_size = atoi(optarg);
 	  break;
 
+        case 'z':
+	  do_compression = 1;
+	  break;
+
 	default:
-	  fprintf(stderr,"bad option -%c\n",opt);
-	  exit(1);
+	  /* fprintf(FERROR,"bad option -%c\n",opt); */
+	  exit_cleanup(1);
 	}
     }
 
@@ -577,18 +650,23 @@ int main(int argc,char *argv[])
       argv++;
     }
 
+    signal(SIGCHLD,SIG_IGN);
+    signal(SIGINT,SIGNAL_CAST sig_int);
+    signal(SIGPIPE,SIGNAL_CAST sig_int);
+    signal(SIGHUP,SIGNAL_CAST sig_int);
+
     if (dry_run)
       verbose = MAX(verbose,1);
 
+#ifndef SUPPORT_LINKS
+    if (!am_server && preserve_links) {
+	    fprintf(FERROR,"ERROR: symbolic links not supported\n");
+	    exit_cleanup(1);
+    }
+#endif
+
     if (am_server) {
-      int version = read_int(STDIN_FILENO);
-      if (version != PROTOCOL_VERSION) {
-	fprintf(stderr,"protocol version mismatch %d %d\n",
-		version,PROTOCOL_VERSION);
-	exit(1);
-      }
-      write_int(STDOUT_FILENO,PROTOCOL_VERSION);
-      write_flush(STDOUT_FILENO);
+      setup_protocol(STDOUT_FILENO,STDIN_FILENO);
 	
       if (sender) {
 	recv_exclude_list(STDIN_FILENO);
@@ -598,12 +676,12 @@ int main(int argc,char *argv[])
       } else {
 	do_server_recv(argc,argv);
       }
-      exit(0);
+      exit_cleanup(0);
     }
 
     if (argc < 2) {
-      usage(stderr);
-      exit(1);
+      usage(FERROR);
+      exit_cleanup(1);
     }
 
     p = strchr(argv[0],':');
@@ -644,36 +722,29 @@ int main(int argc,char *argv[])
     }
 
     if (verbose > 3) {
-      fprintf(stderr,"cmd=%s machine=%s user=%s path=%s\n",
+      fprintf(FERROR,"cmd=%s machine=%s user=%s path=%s\n",
 	      shell_cmd?shell_cmd:"",
 	      shell_machine?shell_machine:"",
 	      shell_user?shell_user:"",
 	      shell_path?shell_path:"");
     }
     
-    signal(SIGCHLD,SIG_IGN);
-    signal(SIGINT,SIGNAL_CAST sig_int);
-    signal(SIGPIPE,SIGNAL_CAST sig_int);
-
     if (!sender && argc != 1) {
-      usage(stderr);
-      exit(1);
+      usage(FERROR);
+      exit_cleanup(1);
     }
 
     pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path,&f_in,&f_out);
 
-    write_int(f_out,PROTOCOL_VERSION);
-    write_flush(f_out);
-    {
-      int version = read_int(f_in);
-      if (version != PROTOCOL_VERSION) {
-	fprintf(stderr,"protocol version mismatch\n");
-	exit(1);
-      }	
-    }
+    setup_protocol(f_out,f_in);
+
+#if HAVE_SETLINEBUF
+    setlinebuf(FINFO);
+    setlinebuf(FERROR);
+#endif
 
     if (verbose > 3) 
-      fprintf(stderr,"parent=%d child=%d sender=%d recurse=%d\n",
+      fprintf(FERROR,"parent=%d child=%d sender=%d recurse=%d\n",
 	      (int)getpid(),pid,sender,recurse);
 
     if (sender) {
@@ -681,37 +752,28 @@ int main(int argc,char *argv[])
 	add_cvs_excludes();
       if (delete_mode) 
 	send_exclude_list(f_out);
-      flist = send_file_list(f_out,recurse,argc,argv);
+      flist = send_file_list(f_out,argc,argv);
       if (verbose > 3) 
-	fprintf(stderr,"file list sent\n");
+	fprintf(FERROR,"file list sent\n");
       send_files(flist,f_out,f_in);
       if (verbose > 3)
-	fprintf(stderr,"waiting on %d\n",pid);
+	fprintf(FERROR,"waiting on %d\n",pid);
       waitpid(pid, &status, 0);
       report(-1);
-      exit(status);
+      exit_cleanup(status);
     }
 
     send_exclude_list(f_out);
 
     flist = recv_file_list(f_in);
     if (!flist || flist->count == 0) {
-      fprintf(stderr,"nothing to do\n");
-      exit(0);
+      fprintf(FERROR,"nothing to do\n");
+      exit_cleanup(0);
     }
 
     local_name = get_local_name(flist,argv[0]);
 
-    if ((pid2=fork()) == 0) {
-      recv_files(f_in,flist,local_name);
-      if (verbose > 1)
-	fprintf(stderr,"receiver read %d\n",read_total());
-      exit(0);
-    }
-
-    generate_files(f_out,flist,local_name);
-
-    waitpid(pid2, &status2, 0);
+    status2 = do_recv(f_in,f_out,flist,local_name);
 
     report(f_in);