It’s been a while, but never fear I’ve got a nice shiny new bug for you today.<\/p>\n
Rsync can in some cases not handle the -E<\/tt> and --delete<\/tt> functions very well when combined together. Because Apple chose to implement resource forks in rsync using their you-beaut-gee-whiz ._<\/tt> files, when the resource fork doesn’t exist for the file, or indeed the file doesn’t exist at all in the source directory rsync happily attempts to unlink the corresponding ._<\/tt> file. On an HFS+ volume, clearly this is going to fail, as it doesn’t exist (incidentally on a UFS, Xsan, FAT, etc volume, it’d work just fine, but rsync is still broken).<\/p>\nA Patch<\/h3>\n
Due to my extreme generosity, or alternatively in an attempt to get away from some software with a name that rhymes with typo<\/i>, I’ve whipped up a quick fix to this problem. It may not be the best way to fix it, but it works, and it even removes the resource fork from a file if the resource fork should be deleted, but not the file itself. How’s that for slick?<\/p>\n
(Yeah, pasting it into a website isn’t all that slick, but I’m too lazy to upload it as a file right now, so tough luck. And WordPress seems to have stuck \\ characters before the quote characters. They shouldn’t be there.)<\/p>\n
--- rsync-2.6.3\/syscall.c\t2005-10-11 14:44:42.000000000 +1000\r\n+++ rsync-2.6.3\/syscall.c\t2005-10-11 15:47:06.000000000 +1000\r\n@@ -53,6 +53,31 @@\r\n {\r\n \tif (dry_run) return 0;\r\n \tRETURN_ERROR_IF_RO_OR_LO;\r\n+#ifdef EA_SUPPORT\r\n+\tif (extended_attributes\r\n+\t\t&& !strncmp(basename(fname), \"._\", 2)) {\r\n+\t\tint retval;\r\n+\t\tretval = unlink(fname);\r\n+\t\tif (retval == -1 && errno == ENOENT) {\r\n+\t\t\tchar ftemp[MAXPATHLEN+17];\r\n+\t\t\tif (snprintf(ftemp, MAXPATHLEN+17, \"%s\/%s\/..namedfork\/rsrc\", \r\n+\t\t\t\t\tdirname(fname), basename(fname)+2) >= MAXPATHLEN+17)\r\n+\t\t\t{\r\n+\t\t\t\terrno = ENOENT;\r\n+\t\t\t\treturn -1;\r\n+\t\t\t}\r\n+\t\t\tfprintf(stderr, \"%s\", ftemp);\r\n+\t\t\tretval = truncate(ftemp, 0);\r\n+\t\t\tif (retval == -1 && errno == ENOENT) {\r\n+\t\t\t\treturn 0;\r\n+\t\t\t} else {\r\n+\t\t\t\treturn retval;\r\n+\t\t\t}\r\n+\t\t} else {\r\n+\t\t\treturn retval;\r\n+\t\t}\r\n+\t}\r\n+#endif\r\n \treturn unlink(fname);\r\n }\r\n <\/pre>\n