X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/e51282678680ba551bb2ddf46fb9fd766999a9f4..f6d530b3fc8d95427a93d51b49ef20f9e3ee5054:/flist.c diff --git a/flist.c b/flist.c index d105422e..c0550ecb 100644 --- a/flist.c +++ b/flist.c @@ -4,7 +4,7 @@ * Copyright (C) 1996 Andrew Tridgell * Copyright (C) 1996 Paul Mackerras * Copyright (C) 2001, 2002 Martin Pool - * Copyright (C) 2002-2008 Wayne Davison + * Copyright (C) 2002-2009 Wayne Davison * * 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 @@ -52,6 +52,7 @@ extern int preserve_links; extern int preserve_hard_links; extern int preserve_devices; extern int preserve_specials; +extern int delete_missing_args; extern int uid_ndx; extern int gid_ndx; extern int eol_nulls; @@ -425,8 +426,7 @@ static void send_file_entry(int f, const char *fname, struct file_struct *file, else mode = file->mode; - if ((preserve_devices && IS_DEVICE(mode)) - || (preserve_specials && IS_SPECIAL(mode))) { + if (preserve_devices && IS_DEVICE(mode)) { if (protocol_version < 28) { if (tmp_rdev == rdev) xflags |= XMIT_SAME_RDEV_pre28; @@ -441,6 +441,17 @@ static void send_file_entry(int f, const char *fname, struct file_struct *file, if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu) xflags |= XMIT_RDEV_MINOR_8_pre30; } + } else if (preserve_specials && IS_SPECIAL(mode)) { + /* Special files don't need an rdev number, so just make + * the historical transmission of the value efficient. */ + if (protocol_version < 28) + xflags |= XMIT_SAME_RDEV_pre28; + else { + rdev = MAKEDEV(major(rdev), 0); + xflags |= XMIT_SAME_RDEV_MAJOR; + if (protocol_version < 30) + xflags |= XMIT_RDEV_MINOR_8_pre30; + } } else if (protocol_version < 28) rdev = MAKEDEV(0, 0); if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname)) @@ -725,8 +736,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist, uid = F_OWNER(first); if (preserve_gid) gid = F_GROUP(first); - if ((preserve_devices && IS_DEVICE(mode)) - || (preserve_specials && IS_SPECIAL(mode))) { + if (preserve_devices && IS_DEVICE(mode)) { uint32 *devp = F_RDEV_P(first); rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)); extra_len += DEV_EXTRA_CNT * EXTRA_LEN; @@ -801,7 +811,8 @@ static struct file_struct *recv_file_entry(struct file_list *flist, rdev_minor = read_int(f); rdev = MAKEDEV(rdev_major, rdev_minor); } - extra_len += DEV_EXTRA_CNT * EXTRA_LEN; + if (IS_DEVICE(mode)) + extra_len += DEV_EXTRA_CNT * EXTRA_LEN; file_length = 0; } else if (protocol_version < 28) rdev = MAKEDEV(0, 0); @@ -942,8 +953,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist, } } - if ((preserve_devices && IS_DEVICE(mode)) - || (preserve_specials && IS_SPECIAL(mode))) { + if (preserve_devices && IS_DEVICE(mode)) { uint32 *devp = F_RDEV_P(file); DEV_MAJOR(devp) = major(rdev); DEV_MINOR(devp) = minor(rdev); @@ -1088,8 +1098,10 @@ struct file_struct *make_file(const char *fname, struct file_list *flist, if (sanitize_paths) sanitize_path(thisname, thisname, "", 0, SP_DEFAULT); - if (stp && S_ISDIR(stp->st_mode)) { - st = *stp; /* Needed for "symlink/." with --relative. */ + if (stp && (S_ISDIR(stp->st_mode) || stp->st_mode == 0)) { + /* This is needed to handle a "symlink/." with a --relative + * dir, or a request to delete a specific file. */ + st = *stp; *linkname = '\0'; /* make IBM code checker happy */ } else if (readlink_stat(thisname, &st, linkname) != 0) { int save_errno = errno; @@ -1130,6 +1142,11 @@ struct file_struct *make_file(const char *fname, struct file_list *flist, full_fname(thisname)); } return NULL; + } else if (st.st_mode == 0) { + io_error |= IOERR_GENERAL; + rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n", + full_fname(thisname)); + return NULL; } if (filter_level == NO_FILTERS) @@ -1257,10 +1274,11 @@ struct file_struct *make_file(const char *fname, struct file_list *flist, #endif #ifdef HAVE_STRUCT_STAT_ST_RDEV - if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) { + if (IS_DEVICE(st.st_mode)) { tmp_rdev = st.st_rdev; st.st_size = 0; - } + } else if (IS_SPECIAL(st.st_mode)) + st.st_size = 0; #endif file->flags = flags; @@ -1342,6 +1360,14 @@ static struct file_struct *send_file_name(int f, struct file_list *flist, if (preserve_links && S_ISLNK(file->mode)) { symlink_name = F_SYMLINK(file); symlink_len = strlen(symlink_name); + if (symlink_len == 0) { + io_error |= IOERR_GENERAL; + f_name(file, fbuf); + rprintf(FERROR_XFER, + "skipping symlink with 0-length value: %s\n", + full_fname(fbuf)); + return NULL; + } } else { symlink_name = NULL; symlink_len = 0; @@ -1578,6 +1604,19 @@ static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist, DIR_NEXT_SIBLING(dp) = -1; } +static void interpret_stat_error(const char *fname, int is_dir) +{ + if (errno == ENOENT) { + io_error |= IOERR_VANISHED; + rprintf(FWARNING, "%s has vanished: %s\n", + is_dir ? "directory" : "file", full_fname(fname)); + } else { + io_error |= IOERR_GENERAL; + rsyserr(FERROR_XFER, errno, "link_stat %s failed", + full_fname(fname)); + } +} + /* This function is normally called by the sender, but the receiving side also * calls it from get_dirlist() with f set to -1 so that we just construct the * file list in memory without sending it over the wire. Also, get_dirlist() @@ -1597,6 +1636,11 @@ static void send_directory(int f, struct file_list *flist, char *fbuf, int len, assert(flist != NULL); if (!(d = opendir(fbuf))) { + if (errno == ENOENT) { + if (am_sender) /* Can abuse this for vanished error w/ENOENT: */ + interpret_stat_error(fbuf, True); + return; + } io_error |= IOERR_GENERAL; rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf)); return; @@ -1768,9 +1812,7 @@ static void send1extra(int f, struct file_struct *file, struct file_list *flist) if (one_file_system) { STRUCT_STAT st; if (link_stat(fbuf, &st, copy_dirlinks) != 0) { - io_error |= IOERR_GENERAL; - rsyserr(FERROR_XFER, errno, "link_stat %s failed", - full_fname(fbuf)); + interpret_stat_error(fbuf, True); return; } filesystem_dev = st.st_dev; @@ -1805,9 +1847,7 @@ static void send1extra(int f, struct file_struct *file, struct file_list *flist) if (name_type != NORMAL_NAME) { STRUCT_STAT st; if (link_stat(fbuf, &st, 1) != 0) { - io_error |= IOERR_GENERAL; - rsyserr(FERROR_XFER, errno, "link_stat %s failed", - full_fname(fbuf)); + interpret_stat_error(fbuf, True); continue; } send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS); @@ -2101,10 +2141,15 @@ struct file_list *send_file_list(int f, int argc, char *argv[]) if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode))) || (relative_paths && path_is_daemon_excluded(fbuf, 1))) { - io_error |= IOERR_GENERAL; - rsyserr(FERROR_XFER, errno, "link_stat %s failed", - full_fname(fbuf)); - continue; + if (errno == ENOENT && delete_missing_args) { + /* Rsync will treat a mode of 0 as deleted. */ + memset(&st, 0, sizeof st); + } else { + io_error |= IOERR_GENERAL; + rsyserr(FERROR_XFER, errno, "link_stat %s failed", + full_fname(fbuf)); + continue; + } } /* A dot-dir should not be excluded! */ @@ -2200,6 +2245,8 @@ struct file_list *send_file_list(int f, int argc, char *argv[]) if (numeric_ids <= 0 && !inc_recurse) send_id_list(f); + set_msg_fd_in(-1); + /* send the io_error flag */ if (protocol_version < 30) write_int(f, ignore_errors ? 0 : io_error); @@ -2244,6 +2291,7 @@ struct file_list *recv_file_list(int f) struct file_list *flist; int dstart, flags; int64 start_read; + int save_verbose = verbose; if (!first_flist) rprintf(FLOG, "receiving file list\n"); @@ -2270,6 +2318,8 @@ struct file_list *recv_file_list(int f) dstart = 0; } + if (am_server && verbose > 2) + verbose = 2; while ((flags = read_byte(f)) != 0) { struct file_struct *file; @@ -2294,6 +2344,7 @@ struct file_list *recv_file_list(int f) } } file_total += flist->used; + verbose = save_verbose; if (verbose > 2) rprintf(FINFO, "received %d names\n", flist->used); @@ -2979,7 +3030,7 @@ struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules) recurse = 0; xfer_dirs = 1; - send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0); + send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, FLAG_CONTENT_DIR); xfer_dirs = save_xfer_dirs; recurse = save_recurse; if (do_progress)