-/*
+/*
Copyright (C) Andrew Tridgell 1996
Copyright (C) Paul Mackerras 1996
-
+ Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
+
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.
*/
-/* generate and receive file lists */
+/** @file flist.c
+ * Generate and receive file lists
+ *
+ * @sa http://lists.samba.org/pipermail/rsync/2000-June/002351.html
+ *
+ **/
#include "rsync.h"
-extern int csum_length;
-
extern int verbose;
+extern int dry_run;
+extern int list_only;
+extern int am_root;
extern int am_server;
+extern int am_daemon;
+extern int am_sender;
+extern int do_progress;
extern int always_checksum;
-extern off_t total_size;
-
-extern int cvs_exclude;
-
+extern int module_id;
+extern int ignore_errors;
+extern int numeric_ids;
+extern int recurse;
+extern int xfer_dirs;
+extern int filesfrom_fd;
extern int one_file_system;
-extern int make_backups;
+extern int keep_dirlinks;
extern int preserve_links;
+extern int preserve_hard_links;
extern int preserve_perms;
extern int preserve_devices;
extern int preserve_uid;
extern int preserve_gid;
-extern int preserve_times;
+extern int relative_paths;
+extern int implied_dirs;
+extern int copy_links;
+extern int copy_unsafe_links;
+extern int protocol_version;
+extern int sanitize_paths;
+extern int orig_umask;
+extern struct stats stats;
+extern struct file_list *the_file_list;
-static char **local_exclude_list = NULL;
+extern char curr_dir[MAXPATHLEN];
-static void clean_fname(char *name);
+extern struct filter_list_struct filter_list;
+extern struct filter_list_struct server_filter_list;
+int io_error;
+dev_t filesystem_dev; /* used to implement -x */
-/*
- This function is used to check if a file should be included/excluded
- from the list of files based on its name and type etc
- */
-static int match_file_name(char *fname,struct stat *st)
-{
- if (check_exclude(fname,local_exclude_list)) {
- if (verbose > 2)
- fprintf(stderr,"excluding file %s\n",fname);
- return 0;
- }
- return 1;
-}
-
-/* used by the one_file_system code */
-static dev_t filesystem_dev;
-
-static void set_filesystem(char *fname)
-{
- struct stat st;
- if (lstat(fname,&st) != 0) return;
- filesystem_dev = st.st_dev;
-}
-
-
-static void send_directory(int f,struct file_list *flist,char *dir);
-
-static char *flist_dir = NULL;
-
-extern void (*send_file_entry)(struct file_struct *file,int f);
-extern void (*receive_file_entry)(struct file_struct *file,
- unsigned char flags,int f);
-
-
-void send_file_entry_v11(struct file_struct *file,int f)
-{
- unsigned char flags;
- static time_t last_time=0;
- static mode_t last_mode=0;
- static dev_t last_dev=0;
- static uid_t last_uid=0;
- static gid_t last_gid=0;
- static char lastname[MAXPATHLEN]="";
- int l1,l2;
-
- if (f == -1) return;
-
- if (!file) {
- write_byte(f,0);
- return;
- }
-
- flags = FILE_VALID;
-
- if (file->mode == last_mode) flags |= SAME_MODE;
- if (file->dev == last_dev) flags |= SAME_DEV;
- if (file->uid == last_uid) flags |= SAME_UID;
- if (file->gid == last_gid) flags |= SAME_GID;
- if (file->modtime == last_time) flags |= SAME_TIME;
-
- for (l1=0;lastname[l1] && file->name[l1] == lastname[l1];l1++) ;
- l2 = strlen(file->name) - l1;
-
- if (l1 > 0) flags |= SAME_NAME;
- if (l2 > 255) flags |= LONG_NAME;
-
- write_byte(f,flags);
- if (flags & SAME_NAME)
- write_byte(f,l1);
- if (flags & LONG_NAME)
- write_int(f,l2);
- else
- write_byte(f,l2);
- write_buf(f,file->name+l1,l2);
-
- write_int(f,(int)file->length);
- if (!(flags & SAME_TIME))
- write_int(f,(int)file->modtime);
- if (!(flags & SAME_MODE))
- write_int(f,(int)file->mode);
- if (preserve_uid && !(flags & SAME_UID))
- write_int(f,(int)file->uid);
- if (preserve_gid && !(flags & SAME_GID))
- write_int(f,(int)file->gid);
- if (preserve_devices && IS_DEVICE(file->mode) && !(flags & SAME_DEV))
- write_int(f,(int)file->dev);
-
-#if SUPPORT_LINKS
- if (preserve_links && S_ISLNK(file->mode)) {
- write_int(f,strlen(file->link));
- write_buf(f,file->link,strlen(file->link));
- }
-#endif
+static char empty_sum[MD4_SUM_LENGTH];
+static int flist_count_offset;
+static unsigned int file_struct_len;
+static struct file_list *sorting_flist;
+
+static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
+static void output_flist(struct file_list *flist);
+
+void init_flist(void)
+{
+ struct file_struct f;
+
+ /* Figure out how big the file_struct is without trailing padding */
+ file_struct_len = offsetof(struct file_struct, flags) + sizeof f.flags;
+}
- if (always_checksum) {
- write_buf(f,file->sum,csum_length);
- }
-
- last_mode = file->mode;
- last_dev = file->dev;
- last_uid = file->uid;
- last_gid = file->gid;
- last_time = file->modtime;
-
- strcpy(lastname,file->name);
- lastname[255] = 0;
-}
-
-
-
-void receive_file_entry_v11(struct file_struct *file,
- unsigned char flags,int f)
-{
- static mode_t last_time=0;
- static mode_t last_mode=0;
- static dev_t last_dev=0;
- static uid_t last_uid=0;
- static gid_t last_gid=0;
- static char lastname[MAXPATHLEN]="";
- int l1=0,l2=0;
-
- if (flags & SAME_NAME)
- l1 = read_byte(f);
-
- if (flags & LONG_NAME)
- l2 = read_int(f);
- else
- l2 = read_byte(f);
-
- file->name = (char *)malloc(l1+l2+1);
- if (!file->name) out_of_memory("receive_file_entry");
-
- strncpy(file->name,lastname,l1);
- read_buf(f,file->name+l1,l2);
- file->name[l1+l2] = 0;
-
- file->length = (off_t)read_int(f);
- file->modtime = (flags & SAME_TIME) ? last_time : (time_t)read_int(f);
- file->mode = (flags & SAME_MODE) ? last_mode : (mode_t)read_int(f);
- if (preserve_uid)
- file->uid = (flags & SAME_UID) ? last_uid : (uid_t)read_int(f);
- if (preserve_gid)
- file->gid = (flags & SAME_GID) ? last_gid : (gid_t)read_int(f);
- if (preserve_devices && IS_DEVICE(file->mode))
- file->dev = (flags & SAME_DEV) ? last_dev : (dev_t)read_int(f);
-
-#if SUPPORT_LINKS
- if (preserve_links && S_ISLNK(file->mode)) {
- int l = read_int(f);
- file->link = (char *)malloc(l+1);
- if (!file->link) out_of_memory("receive_file_entry");
- read_buf(f,file->link,l);
- file->link[l] = 0;
- }
-#endif
-
- if (always_checksum)
- read_buf(f,file->sum,csum_length);
-
- last_mode = file->mode;
- last_dev = file->dev;
- last_uid = file->uid;
- last_gid = file->gid;
- last_time = file->modtime;
- strcpy(lastname,file->name);
- lastname[255] = 0;
+static int show_filelist_p(void)
+{
+ return verbose && xfer_dirs && !am_server;
}
+static void start_filelist_progress(char *kind)
+{
+ rprintf(FINFO, "%s ... ", kind);
+ if (verbose > 1 || do_progress)
+ rprintf(FINFO, "\n");
+ rflush(FINFO);
+}
-static struct file_struct *make_file(int recurse,char *fname)
+static void emit_filelist_progress(int count)
{
- static struct file_struct file;
- struct stat st;
- char sum[SUM_LENGTH];
+ rprintf(FINFO, " %d files...\r", count);
+}
- bzero(sum,SUM_LENGTH);
- if (lstat(fname,&st) != 0) {
- fprintf(stderr,"%s: %s\n",
- fname,strerror(errno));
- return NULL;
- }
+static void maybe_emit_filelist_progress(int count)
+{
+ if (do_progress && show_filelist_p() && (count % 100) == 0)
+ emit_filelist_progress(count);
+}
- if (S_ISDIR(st.st_mode) && !recurse) {
- fprintf(stderr,"skipping directory %s\n",fname);
- return NULL;
- }
- if (one_file_system && st.st_dev != filesystem_dev)
- return NULL;
+static void finish_filelist_progress(const struct file_list *flist)
+{
+ if (do_progress) {
+ /* This overwrites the progress line */
+ rprintf(FINFO, "%d file%sto consider\n",
+ flist->count, flist->count == 1 ? " " : "s ");
+ } else
+ rprintf(FINFO, "done\n");
+}
- if (!match_file_name(fname,&st))
- return NULL;
+void show_flist_stats(void)
+{
+ /* Nothing yet */
+}
- if (verbose > 2)
- fprintf(stderr,"make_file(%s)\n",fname);
- file.name = strdup(fname);
- file.modtime = st.st_mtime;
- file.length = st.st_size;
- file.mode = st.st_mode;
- file.uid = st.st_uid;
- file.gid = st.st_gid;
-#ifdef HAVE_ST_RDEV
- file.dev = st.st_rdev;
+static void list_file_entry(struct file_struct *f)
+{
+ char perms[11];
+
+ if (!f->basename) {
+ /* this can happen if duplicate names were removed */
+ return;
+ }
+
+ permstring(perms, f->mode);
+
+#ifdef SUPPORT_LINKS
+ if (preserve_links && S_ISLNK(f->mode)) {
+ rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
+ perms,
+ (double)f->length, timestring(f->modtime),
+ safe_fname(f_name(f)), safe_fname(f->u.link));
+ } else
#endif
+ {
+ rprintf(FINFO, "%s %11.0f %s %s\n",
+ perms,
+ (double)f->length, timestring(f->modtime),
+ safe_fname(f_name(f)));
+ }
+}
-#if SUPPORT_LINKS
- if (S_ISLNK(st.st_mode)) {
- int l;
- char lnk[MAXPATHLEN];
- if ((l=readlink(fname,lnk,MAXPATHLEN-1)) == -1) {
- fprintf(stderr,"readlink %s : %s\n",fname,strerror(errno));
- return NULL;
- }
- lnk[l] = 0;
- file.link = strdup(lnk);
- }
+
+/**
+ * Stat either a symlink or its referent, depending on the settings of
+ * copy_links, copy_unsafe_links, etc.
+ *
+ * @retval -1 on error
+ *
+ * @retval 0 for success
+ *
+ * @post If @p path is a symlink, then @p linkbuf (of size @c
+ * MAXPATHLEN) contains the symlink target.
+ *
+ * @post @p buffer contains information about the link or the
+ * referrent as appropriate, if they exist.
+ **/
+static int readlink_stat(const char *path, STRUCT_STAT *buffer, char *linkbuf)
+{
+#ifdef SUPPORT_LINKS
+ if (copy_links)
+ return do_stat(path, buffer);
+ if (link_stat(path, buffer, 0) < 0)
+ return -1;
+ if (S_ISLNK(buffer->st_mode)) {
+ int l = readlink((char *)path, linkbuf, MAXPATHLEN - 1);
+ if (l == -1)
+ return -1;
+ linkbuf[l] = 0;
+ if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
+ if (verbose > 1) {
+ rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
+ safe_fname(path), safe_fname(linkbuf));
+ }
+ return do_stat(path, buffer);
+ }
+ }
+ return 0;
+#else
+ return do_stat(path, buffer);
#endif
+}
- if (always_checksum && S_ISREG(st.st_mode)) {
- file_checksum(fname,file.sum,st.st_size);
- }
+int link_stat(const char *path, STRUCT_STAT *buffer, int follow_dirlinks)
+{
+#ifdef SUPPORT_LINKS
+ if (copy_links)
+ return do_stat(path, buffer);
+ if (do_lstat(path, buffer) < 0)
+ return -1;
+ if (follow_dirlinks && S_ISLNK(buffer->st_mode)) {
+ STRUCT_STAT st;
+ if (do_stat(path, &st) == 0 && S_ISDIR(st.st_mode))
+ *buffer = st;
+ }
+ return 0;
+#else
+ return do_stat(path, buffer);
+#endif
+}
- if (flist_dir)
- file.dir = strdup(flist_dir);
- else
- file.dir = NULL;
+/* This function is used to check if a file should be included/excluded
+ * from the list of files based on its name and type etc. The value of
+ * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
+static int is_excluded(char *fname, int is_dir, int filter_level)
+{
+#if 0 /* This currently never happens, so avoid a useless compare. */
+ if (filter_level == NO_FILTERS)
+ return 0;
+#endif
+ if (fname) {
+ /* never exclude '.', even if somebody does --exclude '*' */
+ if (fname[0] == '.' && !fname[1])
+ return 0;
+ /* Handle the -R version of the '.' dir. */
+ if (fname[0] == '/') {
+ int len = strlen(fname);
+ if (fname[len-1] == '.' && fname[len-2] == '/')
+ return 0;
+ }
+ }
+ if (server_filter_list.head
+ && check_filter(&server_filter_list, fname, is_dir) < 0)
+ return 1;
+ if (filter_level != ALL_FILTERS)
+ return 0;
+ if (filter_list.head
+ && check_filter(&filter_list, fname, is_dir) < 0)
+ return 1;
+ return 0;
+}
- if (!S_ISDIR(st.st_mode))
- total_size += st.st_size;
+static int to_wire_mode(mode_t mode)
+{
+#ifdef SUPPORT_LINKS
+ if (S_ISLNK(mode) && (_S_IFLNK != 0120000))
+ return (mode & ~(_S_IFMT)) | 0120000;
+#endif
+ return (int)mode;
+}
- return &file;
+static mode_t from_wire_mode(int mode)
+{
+ if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000))
+ return (mode & ~(_S_IFMT)) | _S_IFLNK;
+ return (mode_t)mode;
}
+static void send_directory(int f, struct file_list *flist,
+ char *fbuf, int len);
+
+static char *flist_dir;
+static int flist_dir_len;
-static void send_file_name(int f,struct file_list *flist,
- int recurse,char *fname)
+
+/**
+ * Make sure @p flist is big enough to hold at least @p flist->count
+ * entries.
+ **/
+void flist_expand(struct file_list *flist)
{
- struct file_struct *file;
+ struct file_struct **new_ptr;
+
+ if (flist->count < flist->malloced)
+ return;
+
+ if (flist->malloced < FLIST_START)
+ flist->malloced = FLIST_START;
+ else if (flist->malloced >= FLIST_LINEAR)
+ flist->malloced += FLIST_LINEAR;
+ else
+ flist->malloced *= 2;
+
+ /*
+ * In case count jumped or we are starting the list
+ * with a known size just set it.
+ */
+ if (flist->malloced < flist->count)
+ flist->malloced = flist->count;
+
+ new_ptr = realloc_array(flist->files, struct file_struct *,
+ flist->malloced);
+
+ if (verbose >= 2 && flist->malloced != FLIST_START) {
+ rprintf(FINFO, "[%s] expand file_list to %.0f bytes, did%s move\n",
+ who_am_i(),
+ (double)sizeof flist->files[0] * flist->malloced,
+ (new_ptr == flist->files) ? " not" : "");
+ }
+
+ flist->files = new_ptr;
+
+ if (!flist->files)
+ out_of_memory("flist_expand");
+}
- file = make_file(recurse,fname);
+void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
+{
+ unsigned short flags;
+ static time_t modtime;
+ static mode_t mode;
+ static int64 dev;
+ static dev_t rdev;
+ static uint32 rdev_major;
+ static uid_t uid;
+ static gid_t gid;
+ static char lastname[MAXPATHLEN];
+ char fname[MAXPATHLEN];
+ int l1, l2;
+
+ if (f < 0)
+ return;
+
+ if (!file) {
+ write_byte(f, 0);
+ modtime = 0, mode = 0;
+ dev = 0, rdev = makedev(0, 0);
+ rdev_major = 0;
+ uid = 0, gid = 0;
+ *lastname = '\0';
+ return;
+ }
+
+ io_write_phase = "send_file_entry";
+
+ f_name_to(file, fname);
+
+ flags = base_flags;
+
+ if (file->mode == mode)
+ flags |= XMIT_SAME_MODE;
+ else
+ mode = file->mode;
+ if (preserve_devices) {
+ if (protocol_version < 28) {
+ if (IS_DEVICE(mode)) {
+ if (file->u.rdev == rdev)
+ flags |= XMIT_SAME_RDEV_pre28;
+ else
+ rdev = file->u.rdev;
+ } else
+ rdev = makedev(0, 0);
+ } else if (IS_DEVICE(mode)) {
+ rdev = file->u.rdev;
+ if ((uint32)major(rdev) == rdev_major)
+ flags |= XMIT_SAME_RDEV_MAJOR;
+ else
+ rdev_major = major(rdev);
+ if ((uint32)minor(rdev) <= 0xFFu)
+ flags |= XMIT_RDEV_MINOR_IS_SMALL;
+ }
+ }
+ if (file->uid == uid)
+ flags |= XMIT_SAME_UID;
+ else
+ uid = file->uid;
+ if (file->gid == gid)
+ flags |= XMIT_SAME_GID;
+ else
+ gid = file->gid;
+ if (file->modtime == modtime)
+ flags |= XMIT_SAME_TIME;
+ else
+ modtime = file->modtime;
+
+#ifdef SUPPORT_HARD_LINKS
+ if (file->link_u.idev) {
+ if (file->F_DEV == dev) {
+ if (protocol_version >= 28)
+ flags |= XMIT_SAME_DEV;
+ } else
+ dev = file->F_DEV;
+ flags |= XMIT_HAS_IDEV_DATA;
+ }
+#endif
- if (!file) return;
-
- if (flist->count >= flist->malloced) {
- flist->malloced += 100;
- flist->files = (struct file_struct *)realloc(flist->files,
- sizeof(flist->files[0])*
- flist->malloced);
- if (!flist->files)
- out_of_memory("send_file_name");
- }
+ for (l1 = 0;
+ lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
+ l1++) {}
+ l2 = strlen(fname+l1);
+
+ if (l1 > 0)
+ flags |= XMIT_SAME_NAME;
+ if (l2 > 255)
+ flags |= XMIT_LONG_NAME;
+
+ /* We must make sure we don't send a zero flag byte or the
+ * other end will terminate the flist transfer. Note that
+ * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
+ * it's harmless way to add a bit to the first flag byte. */
+ if (protocol_version >= 28) {
+ if (!flags && !S_ISDIR(mode))
+ flags |= XMIT_TOP_DIR;
+ if ((flags & 0xFF00) || !flags) {
+ flags |= XMIT_EXTENDED_FLAGS;
+ write_byte(f, flags);
+ write_byte(f, flags >> 8);
+ } else
+ write_byte(f, flags);
+ } else {
+ if (!(flags & 0xFF) && !S_ISDIR(mode))
+ flags |= XMIT_TOP_DIR;
+ if (!(flags & 0xFF))
+ flags |= XMIT_LONG_NAME;
+ write_byte(f, flags);
+ }
+ if (flags & XMIT_SAME_NAME)
+ write_byte(f, l1);
+ if (flags & XMIT_LONG_NAME)
+ write_int(f, l2);
+ else
+ write_byte(f, l2);
+ write_buf(f, fname + l1, l2);
+
+ write_longint(f, file->length);
+ if (!(flags & XMIT_SAME_TIME))
+ write_int(f, modtime);
+ if (!(flags & XMIT_SAME_MODE))
+ write_int(f, to_wire_mode(mode));
+ if (preserve_uid && !(flags & XMIT_SAME_UID)) {
+ if (!numeric_ids)
+ add_uid(uid);
+ write_int(f, uid);
+ }
+ if (preserve_gid && !(flags & XMIT_SAME_GID)) {
+ if (!numeric_ids)
+ add_gid(gid);
+ write_int(f, gid);
+ }
+ if (preserve_devices && IS_DEVICE(mode)) {
+ if (protocol_version < 28) {
+ if (!(flags & XMIT_SAME_RDEV_pre28))
+ write_int(f, (int)rdev);
+ } else {
+ if (!(flags & XMIT_SAME_RDEV_MAJOR))
+ write_int(f, major(rdev));
+ if (flags & XMIT_RDEV_MINOR_IS_SMALL)
+ write_byte(f, minor(rdev));
+ else
+ write_int(f, minor(rdev));
+ }
+ }
+
+#ifdef SUPPORT_LINKS
+ if (preserve_links && S_ISLNK(mode)) {
+ int len = strlen(file->u.link);
+ write_int(f, len);
+ write_buf(f, file->u.link, len);
+ }
+#endif
- if (strcmp(file->name,".") && strcmp(file->name,"/")) {
- flist->files[flist->count++] = *file;
- send_file_entry(file,f);
- }
+#ifdef SUPPORT_HARD_LINKS
+ if (flags & XMIT_HAS_IDEV_DATA) {
+ if (protocol_version < 26) {
+ /* 32-bit dev_t and ino_t */
+ write_int(f, dev);
+ write_int(f, file->F_INODE);
+ } else {
+ /* 64-bit dev_t and ino_t */
+ if (!(flags & XMIT_SAME_DEV))
+ write_longint(f, dev);
+ write_longint(f, file->F_INODE);
+ }
+ }
+#endif
- if (S_ISDIR(file->mode) && recurse) {
- char **last_exclude_list = local_exclude_list;
- send_directory(f,flist,file->name);
- local_exclude_list = last_exclude_list;
- return;
- }
+ if (always_checksum) {
+ char *sum;
+ if (S_ISREG(mode))
+ sum = file->u.sum;
+ else if (protocol_version < 28) {
+ /* Prior to 28, we sent a useless set of nulls. */
+ sum = empty_sum;
+ } else
+ sum = NULL;
+ if (sum) {
+ write_buf(f, sum,
+ protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
+ }
+ }
+
+ strlcpy(lastname, fname, MAXPATHLEN);
+
+ io_write_phase = "unknown";
}
-static void send_directory(int f,struct file_list *flist,char *dir)
+static struct file_struct *receive_file_entry(struct file_list *flist,
+ unsigned short flags, int f)
{
- DIR *d;
- struct dirent *di;
- char fname[MAXPATHLEN];
- int l;
- char *p;
-
- d = opendir(dir);
- if (!d) {
- fprintf(stderr,"%s: %s\n",
- dir,strerror(errno));
- return;
- }
-
- strcpy(fname,dir);
- l = strlen(fname);
- if (fname[l-1] != '/')
- strcat(fname,"/");
- p = fname + strlen(fname);
-
- if (cvs_exclude) {
- strcpy(p,".cvsignore");
- local_exclude_list = make_exclude_list(fname,NULL,0);
- }
-
- for (di=readdir(d); di; di=readdir(d)) {
- if (strcmp(di->d_name,".")==0 ||
- strcmp(di->d_name,"..")==0)
- continue;
- strcpy(p,di->d_name);
- send_file_name(f,flist,1,fname);
- }
+ static time_t modtime;
+ static mode_t mode;
+ static int64 dev;
+ static dev_t rdev;
+ static uint32 rdev_major;
+ static uid_t uid;
+ static gid_t gid;
+ static char lastname[MAXPATHLEN], *lastdir;
+ static int lastdir_depth, lastdir_len = -1;
+ static unsigned int del_hier_name_len = 0;
+ static int in_del_hier = 0;
+ char thisname[MAXPATHLEN];
+ unsigned int l1 = 0, l2 = 0;
+ int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
+ OFF_T file_length;
+ char *basename, *dirname, *bp;
+ struct file_struct *file;
+
+ if (!flist) {
+ modtime = 0, mode = 0;
+ dev = 0, rdev = makedev(0, 0);
+ rdev_major = 0;
+ uid = 0, gid = 0;
+ *lastname = '\0';
+ lastdir_len = -1;
+ in_del_hier = 0;
+ return NULL;
+ }
+
+ if (flags & XMIT_SAME_NAME)
+ l1 = read_byte(f);
+
+ if (flags & XMIT_LONG_NAME)
+ l2 = read_int(f);
+ else
+ l2 = read_byte(f);
+
+ if (l2 >= MAXPATHLEN - l1) {
+ rprintf(FERROR,
+ "overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
+ flags, l1, l2, safe_fname(lastname));
+ overflow_exit("receive_file_entry");
+ }
+
+ strlcpy(thisname, lastname, l1 + 1);
+ read_sbuf(f, &thisname[l1], l2);
+ thisname[l1 + l2] = 0;
+
+ strlcpy(lastname, thisname, MAXPATHLEN);
+
+ clean_fname(thisname, 0);
+
+ if (sanitize_paths)
+ sanitize_path(thisname, thisname, "", 0);
+
+ if ((basename = strrchr(thisname, '/')) != NULL) {
+ dirname_len = ++basename - thisname; /* counts future '\0' */
+ if (lastdir_len == dirname_len - 1
+ && strncmp(thisname, lastdir, lastdir_len) == 0) {
+ dirname = lastdir;
+ dirname_len = 0; /* indicates no copy is needed */
+ } else
+ dirname = thisname;
+ } else {
+ basename = thisname;
+ dirname = NULL;
+ dirname_len = 0;
+ }
+ basename_len = strlen(basename) + 1; /* count the '\0' */
+
+ file_length = read_longint(f);
+ if (!(flags & XMIT_SAME_TIME))
+ modtime = (time_t)read_int(f);
+ if (!(flags & XMIT_SAME_MODE))
+ mode = from_wire_mode(read_int(f));
+
+ if (preserve_uid && !(flags & XMIT_SAME_UID))
+ uid = (uid_t)read_int(f);
+ if (preserve_gid && !(flags & XMIT_SAME_GID))
+ gid = (gid_t)read_int(f);
+
+ if (preserve_devices) {
+ if (protocol_version < 28) {
+ if (IS_DEVICE(mode)) {
+ if (!(flags & XMIT_SAME_RDEV_pre28))
+ rdev = (dev_t)read_int(f);
+ } else
+ rdev = makedev(0, 0);
+ } else if (IS_DEVICE(mode)) {
+ uint32 rdev_minor;
+ if (!(flags & XMIT_SAME_RDEV_MAJOR))
+ rdev_major = read_int(f);
+ if (flags & XMIT_RDEV_MINOR_IS_SMALL)
+ rdev_minor = read_byte(f);
+ else
+ rdev_minor = read_int(f);
+ rdev = makedev(rdev_major, rdev_minor);
+ }
+ }
+
+#ifdef SUPPORT_LINKS
+ if (preserve_links && S_ISLNK(mode)) {
+ linkname_len = read_int(f) + 1; /* count the '\0' */
+ if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
+ rprintf(FERROR, "overflow: linkname_len=%d\n",
+ linkname_len - 1);
+ overflow_exit("receive_file_entry");
+ }
+ }
+ else
+#endif
+ linkname_len = 0;
+
+ sum_len = always_checksum && S_ISREG(mode) ? MD4_SUM_LENGTH : 0;
+
+ alloc_len = file_struct_len + dirname_len + basename_len
+ + linkname_len + sum_len;
+ bp = pool_alloc(flist->file_pool, alloc_len, "receive_file_entry");
+
+ file = (struct file_struct *)bp;
+ memset(bp, 0, file_struct_len);
+ bp += file_struct_len;
+
+ file->flags = 0;
+ file->modtime = modtime;
+ file->length = file_length;
+ file->mode = mode;
+ file->uid = uid;
+ file->gid = gid;
+
+ if (dirname_len) {
+ file->dirname = lastdir = bp;
+ lastdir_len = dirname_len - 1;
+ memcpy(bp, dirname, dirname_len - 1);
+ bp += dirname_len;
+ bp[-1] = '\0';
+ lastdir_depth = count_dir_elements(lastdir);
+ file->dir.depth = lastdir_depth + 1;
+ } else if (dirname) {
+ file->dirname = dirname; /* we're reusing lastname */
+ file->dir.depth = lastdir_depth + 1;
+ } else
+ file->dir.depth = 1;
+
+ if (S_ISDIR(mode)) {
+ if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
+ file->dir.depth--;
+ if (flags & XMIT_TOP_DIR) {
+ in_del_hier = 1;
+ del_hier_name_len = file->dir.depth == 0 ? 0 : l1 + l2;
+ if (relative_paths && del_hier_name_len > 2
+ && basename_len == 1+1 && *basename == '.')
+ del_hier_name_len -= 2;
+ file->flags |= FLAG_TOP_DIR | FLAG_DEL_HERE;
+ } else if (in_del_hier) {
+ if (!relative_paths || !del_hier_name_len
+ || (l1 >= del_hier_name_len
+ && thisname[del_hier_name_len] == '/'))
+ file->flags |= FLAG_DEL_HERE;
+ else
+ in_del_hier = 0;
+ }
+ }
+
+ file->basename = bp;
+ memcpy(bp, basename, basename_len);
+ bp += basename_len;
+
+ if (preserve_devices && IS_DEVICE(mode))
+ file->u.rdev = rdev;
+
+#ifdef SUPPORT_LINKS
+ if (linkname_len) {
+ file->u.link = bp;
+ read_sbuf(f, bp, linkname_len - 1);
+ if (sanitize_paths)
+ sanitize_path(bp, bp, "", lastdir_depth);
+ bp += linkname_len;
+ }
+#endif
+
+#ifdef SUPPORT_HARD_LINKS
+ if (preserve_hard_links && protocol_version < 28 && S_ISREG(mode))
+ flags |= XMIT_HAS_IDEV_DATA;
+ if (flags & XMIT_HAS_IDEV_DATA) {
+ int64 inode;
+ if (protocol_version < 26) {
+ dev = read_int(f);
+ inode = read_int(f);
+ } else {
+ if (!(flags & XMIT_SAME_DEV))
+ dev = read_longint(f);
+ inode = read_longint(f);
+ }
+ if (flist->hlink_pool) {
+ file->link_u.idev = pool_talloc(flist->hlink_pool,
+ struct idev, 1, "inode_table");
+ file->F_INODE = inode;
+ file->F_DEV = dev;
+ }
+ }
+#endif
- closedir(d);
+ if (always_checksum) {
+ char *sum;
+ if (sum_len) {
+ file->u.sum = sum = bp;
+ /*bp += sum_len;*/
+ } else if (protocol_version < 28) {
+ /* Prior to 28, we get a useless set of nulls. */
+ sum = empty_sum;
+ } else
+ sum = NULL;
+ if (sum) {
+ read_buf(f, sum,
+ protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
+ }
+ }
+
+ if (!preserve_perms) {
+ /* set an appropriate set of permissions based on original
+ * permissions and umask. This emulates what GNU cp does */
+ file->mode &= ~orig_umask;
+ }
+
+ return file;
}
+/**
+ * Create a file_struct for a named file by reading its stat()
+ * information and performing extensive checks against global
+ * options.
+ *
+ * @return the new file, or NULL if there was an error or this file
+ * should be excluded.
+ *
+ * @todo There is a small optimization opportunity here to avoid
+ * stat()ing the file in some circumstances, which has a certain cost.
+ * We are called immediately after doing readdir(), and so we may
+ * already know the d_type of the file. We could for example avoid
+ * statting directories if we're not recursing, but this is not a very
+ * important case. Some systems may not have d_type.
+ **/
+struct file_struct *make_file(char *fname, struct file_list *flist,
+ int filter_level)
+{
+ static char *lastdir;
+ static int lastdir_len = -1;
+ struct file_struct *file;
+ STRUCT_STAT st;
+ char sum[SUM_LENGTH];
+ char thisname[MAXPATHLEN];
+ char linkname[MAXPATHLEN];
+ int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
+ char *basename, *dirname, *bp;
+ unsigned short flags = 0;
+
+ if (!flist || !flist->count) /* Ignore lastdir when invalid. */
+ lastdir_len = -1;
+
+ if (strlcpy(thisname, fname, sizeof thisname)
+ >= sizeof thisname - flist_dir_len) {
+ rprintf(FINFO, "skipping overly long name: %s\n",
+ safe_fname(fname));
+ return NULL;
+ }
+ clean_fname(thisname, 0);
+ if (sanitize_paths)
+ sanitize_path(thisname, thisname, "", 0);
+
+ memset(sum, 0, SUM_LENGTH);
+
+ if (readlink_stat(thisname, &st, linkname) != 0) {
+ int save_errno = errno;
+ /* See if file is excluded before reporting an error. */
+ if (filter_level != NO_FILTERS
+ && is_excluded(thisname, 0, filter_level))
+ return NULL;
+ if (save_errno == ENOENT) {
+#ifdef SUPPORT_LINKS
+ /* Avoid "vanished" error if symlink points nowhere. */
+ if (copy_links && do_lstat(thisname, &st) == 0
+ && S_ISLNK(st.st_mode)) {
+ io_error |= IOERR_GENERAL;
+ rprintf(FERROR, "symlink has no referent: %s\n",
+ full_fname(thisname));
+ } else
+#endif
+ {
+ enum logcode c = am_daemon && protocol_version < 28
+ ? FERROR : FINFO;
+ io_error |= IOERR_VANISHED;
+ rprintf(c, "file has vanished: %s\n",
+ full_fname(thisname));
+ }
+ } else {
+ io_error |= IOERR_GENERAL;
+ rsyserr(FERROR, save_errno, "readlink %s failed",
+ full_fname(thisname));
+ }
+ return NULL;
+ }
+
+ /* backup.c calls us with filter_level set to NO_FILTERS. */
+ if (filter_level == NO_FILTERS)
+ goto skip_filters;
+
+ if (S_ISDIR(st.st_mode) && !xfer_dirs) {
+ rprintf(FINFO, "skipping directory %s\n", safe_fname(thisname));
+ return NULL;
+ }
+
+ /* We only care about directories because we need to avoid recursing
+ * into a mount-point directory, not to avoid copying a symlinked
+ * file if -L (or similar) was specified. */
+ if (one_file_system && st.st_dev != filesystem_dev
+ && S_ISDIR(st.st_mode))
+ flags |= FLAG_MOUNT_POINT;
+
+ if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level))
+ return NULL;
+
+ if (lp_ignore_nonreadable(module_id)) {
+#ifdef SUPPORT_LINKS
+ if (!S_ISLNK(st.st_mode))
+#endif
+ if (access(thisname, R_OK) != 0)
+ return NULL;
+ }
+
+skip_filters:
+
+ if (verbose > 2) {
+ rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
+ who_am_i(), safe_fname(thisname), filter_level);
+ }
+
+ if ((basename = strrchr(thisname, '/')) != NULL) {
+ dirname_len = ++basename - thisname; /* counts future '\0' */
+ if (lastdir_len == dirname_len - 1
+ && strncmp(thisname, lastdir, lastdir_len) == 0) {
+ dirname = lastdir;
+ dirname_len = 0; /* indicates no copy is needed */
+ } else
+ dirname = thisname;
+ } else {
+ basename = thisname;
+ dirname = NULL;
+ dirname_len = 0;
+ }
+ basename_len = strlen(basename) + 1; /* count the '\0' */
+
+#ifdef SUPPORT_LINKS
+ linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
+#else
+ linkname_len = 0;
+#endif
-struct file_list *send_file_list(int f,int recurse,int argc,char *argv[])
+ sum_len = always_checksum && S_ISREG(st.st_mode) ? MD4_SUM_LENGTH : 0;
+
+ alloc_len = file_struct_len + dirname_len + basename_len
+ + linkname_len + sum_len;
+ if (flist) {
+ bp = pool_alloc(flist->file_pool, alloc_len,
+ "receive_file_entry");
+ } else {
+ if (!(bp = new_array(char, alloc_len)))
+ out_of_memory("receive_file_entry");
+ }
+
+ file = (struct file_struct *)bp;
+ memset(bp, 0, file_struct_len);
+ bp += file_struct_len;
+
+ file->flags = flags;
+ file->modtime = st.st_mtime;
+ file->length = st.st_size;
+ file->mode = st.st_mode;
+ file->uid = st.st_uid;
+ file->gid = st.st_gid;
+
+#ifdef SUPPORT_HARD_LINKS
+ if (flist && flist->hlink_pool) {
+ if (protocol_version < 28) {
+ if (S_ISREG(st.st_mode))
+ file->link_u.idev = pool_talloc(
+ flist->hlink_pool, struct idev, 1,
+ "inode_table");
+ } else {
+ if (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
+ file->link_u.idev = pool_talloc(
+ flist->hlink_pool, struct idev, 1,
+ "inode_table");
+ }
+ }
+ if (file->link_u.idev) {
+ file->F_DEV = st.st_dev;
+ file->F_INODE = st.st_ino;
+ }
+#endif
+
+ if (dirname_len) {
+ file->dirname = lastdir = bp;
+ lastdir_len = dirname_len - 1;
+ memcpy(bp, dirname, dirname_len - 1);
+ bp += dirname_len;
+ bp[-1] = '\0';
+ } else if (dirname)
+ file->dirname = dirname;
+
+ file->basename = bp;
+ memcpy(bp, basename, basename_len);
+ bp += basename_len;
+
+#ifdef HAVE_STRUCT_STAT_ST_RDEV
+ if (preserve_devices && IS_DEVICE(st.st_mode))
+ file->u.rdev = st.st_rdev;
+#endif
+
+#ifdef SUPPORT_LINKS
+ if (linkname_len) {
+ file->u.link = bp;
+ memcpy(bp, linkname, linkname_len);
+ bp += linkname_len;
+ }
+#endif
+
+ if (sum_len) {
+ file->u.sum = bp;
+ file_checksum(thisname, bp, st.st_size);
+ /*bp += sum_len;*/
+ }
+
+ file->dir.root = flist_dir;
+
+ /* This code is only used by the receiver when it is building
+ * a list of files for a delete pass. */
+ if (keep_dirlinks && linkname_len && flist) {
+ STRUCT_STAT st2;
+ int save_mode = file->mode;
+ file->mode = S_IFDIR; /* find a directory w/our name */
+ if (flist_find(the_file_list, file) >= 0
+ && do_stat(thisname, &st2) == 0 && S_ISDIR(st2.st_mode)) {
+ file->modtime = st2.st_mtime;
+ file->length = st2.st_size;
+ file->mode = st2.st_mode;
+ file->uid = st2.st_uid;
+ file->gid = st2.st_gid;
+ file->u.link = NULL;
+ } else
+ file->mode = save_mode;
+ }
+
+ if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
+ stats.total_size += st.st_size;
+
+ return file;
+}
+
+
+static struct file_struct *send_file_name(int f, struct file_list *flist,
+ char *fname, unsigned short base_flags)
+{
+ struct file_struct *file;
+
+ file = make_file(fname, flist, f == -2 ? SERVER_FILTERS : ALL_FILTERS);
+ if (!file)
+ return NULL;
+
+ maybe_emit_filelist_progress(flist->count + flist_count_offset);
+
+ flist_expand(flist);
+
+ if (file->basename[0]) {
+ flist->files[flist->count++] = file;
+ send_file_entry(file, f, base_flags);
+ }
+ return file;
+}
+
+static void send_if_directory(int f, struct file_list *flist,
+ struct file_struct *file)
{
- int i,l;
- struct stat st;
- char *p,*dir;
- char dbuf[MAXPATHLEN];
- struct file_list *flist;
+ char fbuf[MAXPATHLEN];
+
+ if (S_ISDIR(file->mode)
+ && !(file->flags & FLAG_MOUNT_POINT) && f_name_to(file, fbuf)) {
+ void *save_filters;
+ unsigned int len = strlen(fbuf);
+ if (len > 1 && fbuf[len-1] == '/')
+ fbuf[--len] = '\0';
+ if (len >= MAXPATHLEN - 1) {
+ io_error |= IOERR_GENERAL;
+ rprintf(FERROR, "skipping long-named directory: %s\n",
+ full_fname(fbuf));
+ return;
+ }
+ save_filters = push_local_filters(fbuf, len);
+ send_directory(f, flist, fbuf, len);
+ pop_local_filters(save_filters);
+ }
+}
- if (verbose && recurse) {
- fprintf(am_server?stderr:stdout,"building file list ... ");
- fflush(am_server?stderr:stdout);
- }
- flist = (struct file_list *)malloc(sizeof(flist[0]));
- if (!flist) out_of_memory("send_file_list");
+/* 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()
+ * might call this with f set to -2, which also indicates that local filter
+ * rules should be ignored. */
+static void send_directory(int f, struct file_list *flist,
+ char *fbuf, int len)
+{
+ struct dirent *di;
+ unsigned remainder;
+ char *p;
+ DIR *d;
+ int start = flist->count;
+
+ if (!(d = opendir(fbuf))) {
+ io_error |= IOERR_GENERAL;
+ rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
+ return;
+ }
+
+ p = fbuf + len;
+ if (len != 1 || *fbuf != '/')
+ *p++ = '/';
+ *p = '\0';
+ remainder = MAXPATHLEN - (p - fbuf);
+
+ for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
+ char *dname = d_name(di);
+ if (dname[0] == '.' && (dname[1] == '\0'
+ || (dname[1] == '.' && dname[2] == '\0')))
+ continue;
+ if (strlcpy(p, dname, remainder) < remainder)
+ send_file_name(f, flist, fbuf, 0);
+ else {
+ io_error |= IOERR_GENERAL;
+ rprintf(FINFO,
+ "cannot send long-named file %s\n",
+ full_fname(fbuf));
+ }
+ }
+
+ fbuf[len] = '\0';
+
+ if (errno) {
+ io_error |= IOERR_GENERAL;
+ rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
+ }
+
+ closedir(d);
+
+ if (recurse) {
+ int i, end = flist->count - 1;
+ for (i = start; i <= end; i++)
+ send_if_directory(f, flist, flist->files[i]);
+ }
+}
- flist->count=0;
- flist->malloced = 100;
- flist->files = (struct file_struct *)malloc(sizeof(flist->files[0])*
- flist->malloced);
- if (!flist->files) out_of_memory("send_file_list");
- for (i=0;i<argc;i++) {
- char fname2[MAXPATHLEN];
- char *fname = fname2;
-
- strcpy(fname,argv[i]);
-
- l = strlen(fname);
- if (l != 1 && fname[l-1] == '/') {
- strcat(fname,".");
- }
-
- if (lstat(fname,&st) != 0) {
- fprintf(stderr,"%s : %s\n",fname,strerror(errno));
- continue;
- }
-
- if (S_ISDIR(st.st_mode) && !recurse) {
- fprintf(stderr,"skipping directory %s\n",fname);
- continue;
- }
-
- dir = NULL;
- p = strrchr(fname,'/');
- if (p) {
- *p = 0;
- dir = fname;
- fname = p+1;
- }
- if (!*fname)
- fname = ".";
-
- if (dir && *dir) {
- if (getcwd(dbuf,MAXPATHLEN-1) == NULL) {
- fprintf(stderr,"getwd : %s\n",strerror(errno));
- exit_cleanup(1);
- }
- if (chdir(dir) != 0) {
- fprintf(stderr,"chdir %s : %s\n",dir,strerror(errno));
- continue;
- }
- flist_dir = dir;
- if (one_file_system)
- set_filesystem(fname);
- send_file_name(f,flist,recurse,fname);
- flist_dir = NULL;
- if (chdir(dbuf) != 0) {
- fprintf(stderr,"chdir %s : %s\n",dbuf,strerror(errno));
- exit_cleanup(1);
- }
- continue;
- }
-
- if (one_file_system)
- set_filesystem(fname);
- send_file_name(f,flist,recurse,fname);
- }
-
- if (f != -1) {
- send_file_entry(NULL,f);
- write_flush(f);
- }
-
- clean_flist(flist);
-
- if (verbose && recurse)
- fprintf(am_server?stderr:stdout,"done\n");
-
- return flist;
+struct file_list *send_file_list(int f, int argc, char *argv[])
+{
+ int l;
+ STRUCT_STAT st;
+ char *p, *dir, olddir[sizeof curr_dir];
+ char lastpath[MAXPATHLEN] = "";
+ struct file_list *flist;
+ struct timeval start_tv, end_tv;
+ int64 start_write;
+ int use_ff_fd = 0;
+
+ if (show_filelist_p())
+ start_filelist_progress("building file list");
+
+ start_write = stats.total_written;
+ gettimeofday(&start_tv, NULL);
+
+ flist = flist_new(WITH_HLINK, "send_file_list");
+
+ io_start_buffering_out();
+ if (filesfrom_fd >= 0) {
+ if (argv[0] && !push_dir(argv[0])) {
+ rsyserr(FERROR, errno, "push_dir %s failed",
+ full_fname(argv[0]));
+ exit_cleanup(RERR_FILESELECT);
+ }
+ use_ff_fd = 1;
+ }
+
+ while (1) {
+ struct file_struct *file;
+ char fname2[MAXPATHLEN];
+ char *fname = fname2;
+ int is_dot_dir;
+
+ if (use_ff_fd) {
+ if (read_filesfrom_line(filesfrom_fd, fname) == 0)
+ break;
+ sanitize_path(fname, fname, "", 0);
+ } else {
+ if (argc-- == 0)
+ break;
+ strlcpy(fname, *argv++, MAXPATHLEN);
+ if (sanitize_paths)
+ sanitize_path(fname, fname, "", 0);
+ }
+
+ l = strlen(fname);
+ if (!l || fname[l - 1] == '/') {
+ if (l == 2 && fname[0] == '.') {
+ /* Turn "./" into just "." rather than "./." */
+ fname[1] = '\0';
+ } else {
+ if (l + 1 >= MAXPATHLEN)
+ overflow_exit("send_file_list");
+ fname[l++] = '.';
+ fname[l] = '\0';
+ }
+ is_dot_dir = 1;
+ } else if (l > 1 && fname[l-1] == '.' && fname[l-2] == '.'
+ && (l == 2 || fname[l-3] == '/')) {
+ if (l + 2 >= MAXPATHLEN)
+ overflow_exit("send_file_list");
+ fname[l++] = '/';
+ fname[l++] = '.';
+ fname[l] = '\0';
+ is_dot_dir = 1;
+ } else {
+ is_dot_dir = fname[l-1] == '.'
+ && (l == 1 || fname[l-2] == '/');
+ }
+
+ if (link_stat(fname, &st, keep_dirlinks) != 0) {
+ io_error |= IOERR_GENERAL;
+ rsyserr(FERROR, errno, "link_stat %s failed",
+ full_fname(fname));
+ continue;
+ }
+
+ if (S_ISDIR(st.st_mode) && !xfer_dirs) {
+ rprintf(FINFO, "skipping directory %s\n",
+ safe_fname(fname));
+ continue;
+ }
+
+ dir = NULL;
+ olddir[0] = '\0';
+
+ if (!relative_paths) {
+ p = strrchr(fname, '/');
+ if (p) {
+ *p = '\0';
+ if (p == fname)
+ dir = "/";
+ else
+ dir = fname;
+ fname = p + 1;
+ }
+ } else if (implied_dirs && (p=strrchr(fname,'/')) && p != fname) {
+ /* Send the implied directories at the start of the
+ * source spec, so we get their permissions right. */
+ char *lp = lastpath, *fn = fname, *slash = fname;
+ *p = '\0';
+ /* Skip any initial directories in our path that we
+ * have in common with lastpath. */
+ while (*fn && *lp == *fn) {
+ if (*fn == '/')
+ slash = fn;
+ lp++, fn++;
+ }
+ *p = '/';
+ if (fn != p || (*lp && *lp != '/')) {
+ int save_copy_links = copy_links;
+ int save_xfer_dirs = xfer_dirs;
+ copy_links = copy_unsafe_links;
+ xfer_dirs = 1;
+ while ((slash = strchr(slash+1, '/')) != 0) {
+ *slash = '\0';
+ send_file_name(f, flist, fname, 0);
+ *slash = '/';
+ }
+ copy_links = save_copy_links;
+ xfer_dirs = save_xfer_dirs;
+ *p = '\0';
+ strlcpy(lastpath, fname, sizeof lastpath);
+ *p = '/';
+ }
+ }
+
+ if (!*fname)
+ fname = ".";
+
+ if (dir && *dir) {
+ static char *lastdir;
+ static int lastdir_len;
+
+ strcpy(olddir, curr_dir); /* can't overflow */
+
+ if (!push_dir(dir)) {
+ io_error |= IOERR_GENERAL;
+ rsyserr(FERROR, errno, "push_dir %s failed",
+ full_fname(dir));
+ continue;
+ }
+
+ if (lastdir && strcmp(lastdir, dir) == 0) {
+ flist_dir = lastdir;
+ flist_dir_len = lastdir_len;
+ } else {
+ flist_dir = lastdir = strdup(dir);
+ flist_dir_len = lastdir_len = strlen(dir);
+ }
+ }
+
+ if (one_file_system)
+ filesystem_dev = st.st_dev;
+
+ if ((file = send_file_name(f, flist, fname, XMIT_TOP_DIR))) {
+ if (recurse || (xfer_dirs && is_dot_dir))
+ send_if_directory(f, flist, file);
+ }
+
+ if (olddir[0]) {
+ flist_dir = NULL;
+ flist_dir_len = 0;
+ if (!pop_dir(olddir)) {
+ rsyserr(FERROR, errno, "pop_dir %s failed",
+ full_fname(dir));
+ exit_cleanup(RERR_FILESELECT);
+ }
+ }
+ }
+
+ gettimeofday(&end_tv, NULL);
+ stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
+ + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
+ if (stats.flist_buildtime == 0)
+ stats.flist_buildtime = 1;
+ start_tv = end_tv;
+
+ send_file_entry(NULL, f, 0);
+
+ if (show_filelist_p())
+ finish_filelist_progress(flist);
+
+ gettimeofday(&end_tv, NULL);
+ stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
+ + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
+
+ if (flist->hlink_pool) {
+ pool_destroy(flist->hlink_pool);
+ flist->hlink_pool = NULL;
+ }
+
+ /* Sort the list without removing any duplicates. This allows the
+ * receiving side to ask for any name they like, which gives us the
+ * flexibility to change the way we unduplicate names in the future
+ * without causing a compatibility problem with older versions. */
+ clean_flist(flist, 0, 0);
+
+ /* Now send the uid/gid list. This was introduced in
+ * protocol version 15 */
+ send_uid_list(f);
+
+ /* send the io_error flag */
+ write_int(f, lp_ignore_errors(module_id) ? 0 : io_error);
+
+ io_end_buffering();
+ stats.flist_size = stats.total_written - start_write;
+ stats.num_files = flist->count;
+
+ if (verbose > 3)
+ output_flist(flist);
+
+ if (verbose > 2)
+ rprintf(FINFO, "send_file_list done\n");
+
+ return flist;
}
struct file_list *recv_file_list(int f)
{
- struct file_list *flist;
- unsigned char flags;
+ struct file_list *flist;
+ unsigned short flags;
+ int64 start_read;
+
+ if (show_filelist_p())
+ start_filelist_progress("receiving file list");
+
+ start_read = stats.total_read;
+
+ flist = flist_new(WITH_HLINK, "recv_file_list");
- if (verbose > 2)
- fprintf(stderr,"recv_file_list starting\n");
+ flist->count = 0;
+ flist->malloced = 1000;
+ flist->files = new_array(struct file_struct *, flist->malloced);
+ if (!flist->files)
+ goto oom;
- flist = (struct file_list *)malloc(sizeof(flist[0]));
- if (!flist)
- goto oom;
- flist->count=0;
- flist->malloced=100;
- flist->files = (struct file_struct *)malloc(sizeof(flist->files[0])*
- flist->malloced);
- if (!flist->files)
- goto oom;
+ while ((flags = read_byte(f)) != 0) {
+ struct file_struct *file;
+ flist_expand(flist);
- for (flags=read_byte(f); flags; flags=read_byte(f)) {
- int i = flist->count;
+ if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
+ flags |= read_byte(f) << 8;
+ file = receive_file_entry(flist, flags, f);
- if (i >= flist->malloced) {
- flist->malloced += 100;
- flist->files =(struct file_struct *)realloc(flist->files,
- sizeof(flist->files[0])*
- flist->malloced);
- if (!flist->files)
- goto oom;
- }
+ if (S_ISREG(file->mode))
+ stats.total_size += file->length;
- receive_file_entry(&flist->files[i],flags,f);
+ flist->files[flist->count++] = file;
- if (S_ISREG(flist->files[i].mode))
- total_size += flist->files[i].length;
+ maybe_emit_filelist_progress(flist->count);
- flist->count++;
+ if (verbose > 2) {
+ rprintf(FINFO, "recv_file_name(%s)\n",
+ safe_fname(f_name(file)));
+ }
+ }
+ receive_file_entry(NULL, 0, 0); /* Signal that we're done. */
- if (verbose > 2)
- fprintf(stderr,"recv_file_name(%s)\n",flist->files[i].name);
- }
+ if (verbose > 2)
+ rprintf(FINFO, "received %d names\n", flist->count);
+ if (show_filelist_p())
+ finish_filelist_progress(flist);
- if (verbose > 2)
- fprintf(stderr,"received %d names\n",flist->count);
+ clean_flist(flist, relative_paths, 1);
- clean_flist(flist);
+ if (f >= 0) {
+ /* Now send the uid/gid list. This was introduced in
+ * protocol version 15 */
+ recv_uid_list(f, flist);
- return flist;
+ /* Recv the io_error flag */
+ if (lp_ignore_errors(module_id) || ignore_errors)
+ read_int(f);
+ else
+ io_error |= read_int(f);
+ }
+
+ if (verbose > 3)
+ output_flist(flist);
+
+ if (list_only) {
+ int i;
+ for (i = 0; i < flist->count; i++)
+ list_file_entry(flist->files[i]);
+ }
+
+ if (verbose > 2)
+ rprintf(FINFO, "recv_file_list done\n");
+
+ stats.flist_size = stats.total_read - start_read;
+ stats.num_files = flist->count;
+
+ return flist;
oom:
- out_of_memory("recv_file_list");
- return NULL; /* not reached */
+ out_of_memory("recv_file_list");
+ return NULL; /* not reached */
}
-static int flist_compare(struct file_struct *f1,struct file_struct *f2)
+static int file_compare(struct file_struct **file1, struct file_struct **file2)
{
- if (!f1->name && !f2->name) return 0;
- if (!f1->name) return -1;
- if (!f2->name) return 1;
- return strcmp(f1->name,f2->name);
+ return f_name_cmp(*file1, *file2);
}
-int flist_find(struct file_list *flist,struct file_struct *f)
+/* Search for an identically-named item in the file list. Note that the
+ * items must agree in their directory-ness, or no match is returned. */
+int flist_find(struct file_list *flist, struct file_struct *f)
{
- int low=0,high=flist->count;
+ int low = flist->low, high = flist->high;
+ int ret, mid, mid_up;
+
+ while (low <= high) {
+ mid = (low + high) / 2;
+ for (mid_up = mid; !flist->files[mid_up]->basename; mid_up++) {}
+ if (mid_up <= high)
+ ret = f_name_cmp(flist->files[mid_up], f);
+ else
+ ret = 1;
+ if (ret == 0) {
+ if (protocol_version < 29
+ && S_ISDIR(flist->files[mid_up]->mode)
+ != S_ISDIR(f->mode))
+ return -1;
+ return mid_up;
+ }
+ if (ret > 0)
+ high = mid - 1;
+ else
+ low = mid_up + 1;
+ }
+ return -1;
+}
- while (low != high) {
- int mid = (low+high)/2;
- int ret = flist_compare(&flist->files[mid],f);
- if (ret == 0) return mid;
- if (ret > 0)
- high=mid;
- else
- low=mid+1;
- }
- if (flist_compare(&flist->files[low],f) == 0)
- return low;
- return -1;
+
+/*
+ * Free up any resources a file_struct has allocated
+ * and clear the file.
+ */
+void clear_file(int i, struct file_list *flist)
+{
+ if (flist->hlink_pool && flist->files[i]->link_u.idev)
+ pool_free(flist->hlink_pool, 0, flist->files[i]->link_u.idev);
+ memset(flist->files[i], 0, file_struct_len);
}
-static void clean_fname(char *name)
+/*
+ * allocate a new file list
+ */
+struct file_list *flist_new(int with_hlink, char *msg)
{
- char *p;
- int l;
- int modified = 1;
+ struct file_list *flist;
- if (!name) return;
+ flist = new(struct file_list);
+ if (!flist)
+ out_of_memory(msg);
- while (modified) {
- modified = 0;
+ memset(flist, 0, sizeof (struct file_list));
- if ((p=strstr(name,"/./"))) {
- modified = 1;
- while (*p) {
- p[0] = p[2];
- p++;
- }
- }
+ if (!(flist->file_pool = pool_create(FILE_EXTENT, 0,
+ out_of_memory, POOL_INTERN)))
+ out_of_memory(msg);
- if ((p=strstr(name,"//"))) {
- modified = 1;
- while (*p) {
- p[0] = p[1];
- p++;
- }
- }
+#ifdef SUPPORT_HARD_LINKS
+ if (with_hlink && preserve_hard_links) {
+ if (!(flist->hlink_pool = pool_create(HLINK_EXTENT,
+ sizeof (struct idev), out_of_memory, POOL_INTERN)))
+ out_of_memory(msg);
+ }
+#endif
- if (strncmp(p=name,"./",2) == 0) {
- modified = 1;
- while (*p) {
- p[0] = p[2];
- p++;
- }
- }
+ return flist;
+}
- l = strlen(p=name);
- if (l > 1 && p[l-1] == '/') {
- modified = 1;
- p[l-1] = 0;
- }
- }
+/*
+ * free up all elements in a flist
+ */
+void flist_free(struct file_list *flist)
+{
+ pool_destroy(flist->file_pool);
+ pool_destroy(flist->hlink_pool);
+ free(flist->files);
+ free(flist);
}
/*
* This routine ensures we don't have any duplicate names in our file list.
- * duplicate names can cause corruption because of the pipelining
+ * duplicate names can cause corruption because of the pipelining
+ */
+static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
+{
+ int i, prev_i = 0;
+
+ if (!flist)
+ return;
+ if (flist->count == 0) {
+ flist->high = -1;
+ return;
+ }
+
+ sorting_flist = flist;
+ qsort(flist->files, flist->count,
+ sizeof flist->files[0], (int (*)())file_compare);
+ sorting_flist = NULL;
+
+ for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
+ if (flist->files[i]->basename) {
+ prev_i = i;
+ break;
+ }
+ }
+ flist->low = prev_i;
+ while (++i < flist->count) {
+ int j;
+ struct file_struct *file = flist->files[i];
+
+ if (!file->basename)
+ continue;
+ if (f_name_cmp(file, flist->files[prev_i]) == 0)
+ j = prev_i;
+ else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
+ int save_mode = file->mode;
+ /* Make sure that this directory doesn't duplicate a
+ * non-directory earlier in the list. */
+ flist->high = prev_i;
+ file->mode = S_IFREG;
+ j = flist_find(flist, file);
+ file->mode = save_mode;
+ } else
+ j = -1;
+ if (j >= 0) {
+ struct file_struct *fp = flist->files[j];
+ int keep, drop;
+ /* If one is a dir and the other is not, we want to
+ * keep the dir because it might have contents in the
+ * list. */
+ if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
+ if (S_ISDIR(file->mode))
+ keep = i, drop = j;
+ else
+ keep = j, drop = i;
+ } else
+ keep = j, drop = i;
+ if (verbose > 1 && !am_server) {
+ rprintf(FINFO,
+ "removing duplicate name %s from file list (%d)\n",
+ safe_fname(f_name(file)), drop);
+ }
+ /* Make sure that if we unduplicate '.', that we don't
+ * lose track of a user-specified top directory. */
+ flist->files[keep]->flags |= flist->files[drop]->flags
+ & (FLAG_TOP_DIR|FLAG_DEL_HERE);
+
+ clear_file(drop, flist);
+
+ if (keep == i) {
+ if (flist->low == drop) {
+ for (j = drop + 1;
+ j < i && !flist->files[j]->basename;
+ j++) {}
+ flist->low = j;
+ }
+ prev_i = i;
+ }
+ } else
+ prev_i = i;
+ }
+ flist->high = no_dups ? prev_i : flist->count - 1;
+
+ if (strip_root) {
+ /* We need to strip off the leading slashes for relative
+ * paths, but this must be done _after_ the sorting phase. */
+ for (i = flist->low; i <= flist->high; i++) {
+ struct file_struct *file = flist->files[i];
+
+ if (!file->dirname)
+ continue;
+ if (*file->dirname == '/') {
+ char *s = file->dirname + 1;
+ while (*s == '/') s++;
+ memmove(file->dirname, s, strlen(s) + 1);
+ }
+
+ if (!*file->dirname)
+ file->dirname = NULL;
+ }
+ }
+}
+
+
+static void output_flist(struct file_list *flist)
+{
+ char uidbuf[16], gidbuf[16], depthbuf[16];
+ struct file_struct *file;
+ const char *who = who_am_i();
+ int i;
+
+ for (i = 0; i < flist->count; i++) {
+ file = flist->files[i];
+ if ((am_root || am_sender) && preserve_uid)
+ sprintf(uidbuf, " uid=%ld", (long)file->uid);
+ else
+ *uidbuf = '\0';
+ if (preserve_gid && file->gid != GID_NONE)
+ sprintf(gidbuf, " gid=%ld", (long)file->gid);
+ else
+ *gidbuf = '\0';
+ if (!am_sender)
+ sprintf(depthbuf, "%d", file->dir.depth);
+ rprintf(FINFO, "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
+ who, i, am_sender ? NS(file->dir.root) : depthbuf,
+ file->dirname ? safe_fname(file->dirname) : "",
+ file->dirname ? "/" : "", NS(file->basename),
+ S_ISDIR(file->mode) ? "/" : "", (int)file->mode,
+ (double)file->length, uidbuf, gidbuf, file->flags);
+ }
+}
+
+
+enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
+enum fnc_type { t_PATH, t_ITEM };
+
+/* Compare the names of two file_struct entities, similar to how strcmp()
+ * would do if it were operating on the joined strings.
+ *
+ * Some differences beginning with protocol_version 29: (1) directory names
+ * are compared with an assumed trailing slash so that they compare in a
+ * way that would cause them to sort immediately prior to any content they
+ * may have; (2) a directory of any name compares after a non-directory of
+ * any name at the same depth; (3) a directory with name "." compares prior
+ * to anything else. These changes mean that a directory and a non-dir
+ * with the same name will not compare as equal (protocol_version >= 29).
+ *
+ * The dirname component can be an empty string, but the basename component
+ * cannot (and never is in the current codebase). The basename component
+ * may be NULL (for a removed item), in which case it is considered to be
+ * after any existing item. */
+int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
+{
+ int dif;
+ const uchar *c1, *c2;
+ enum fnc_state state1, state2;
+ enum fnc_type type1, type2;
+ enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
+
+ if (!f1 || !f1->basename) {
+ if (!f2 || !f2->basename)
+ return 0;
+ return -1;
+ }
+ if (!f2 || !f2->basename)
+ return 1;
+
+ c1 = (uchar*)f1->dirname;
+ c2 = (uchar*)f2->dirname;
+ if (c1 == c2)
+ c1 = c2 = NULL;
+ if (!c1) {
+ type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
+ c1 = (uchar*)f1->basename;
+ if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
+ type1 = t_ITEM;
+ state1 = s_TRAILING;
+ c1 = (uchar*)"";
+ } else
+ state1 = s_BASE;
+ } else if (!*c1) {
+ type1 = t_path;
+ state1 = s_SLASH;
+ c1 = (uchar*)"/";
+ } else {
+ type1 = t_path;
+ state1 = s_DIR;
+ }
+ if (!c2) {
+ type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
+ c2 = (uchar*)f2->basename;
+ if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
+ type2 = t_ITEM;
+ state2 = s_TRAILING;
+ c2 = (uchar*)"";
+ } else
+ state2 = s_BASE;
+ } else if (!*c2) {
+ type2 = t_path;
+ state2 = s_SLASH;
+ c2 = (uchar*)"/";
+ } else {
+ type2 = t_path;
+ state2 = s_DIR;
+ }
+
+ if (type1 != type2)
+ return type1 == t_PATH ? 1 : -1;
+
+ while (1) {
+ if ((dif = (int)*c1++ - (int)*c2++) != 0)
+ break;
+ if (!*c1) {
+ switch (state1) {
+ case s_DIR:
+ state1 = s_SLASH;
+ c1 = (uchar*)"/";
+ break;
+ case s_SLASH:
+ type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
+ c1 = (uchar*)f1->basename;
+ if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
+ type1 = t_ITEM;
+ state1 = s_TRAILING;
+ c1 = (uchar*)"";
+ } else
+ state1 = s_BASE;
+ break;
+ case s_BASE:
+ state1 = s_TRAILING;
+ if (type1 == t_PATH) {
+ c1 = (uchar*)"/";
+ break;
+ }
+ /* FALL THROUGH */
+ case s_TRAILING:
+ type1 = t_ITEM;
+ break;
+ }
+ if (*c2 && type1 != type2)
+ return type1 == t_PATH ? 1 : -1;
+ }
+ if (!*c2) {
+ switch (state2) {
+ case s_DIR:
+ state2 = s_SLASH;
+ c2 = (uchar*)"/";
+ break;
+ case s_SLASH:
+ type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
+ c2 = (uchar*)f2->basename;
+ if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
+ type2 = t_ITEM;
+ state2 = s_TRAILING;
+ c2 = (uchar*)"";
+ } else
+ state2 = s_BASE;
+ break;
+ case s_BASE:
+ state2 = s_TRAILING;
+ if (type2 == t_PATH) {
+ c2 = (uchar*)"/";
+ break;
+ }
+ /* FALL THROUGH */
+ case s_TRAILING:
+ if (!*c1)
+ return 0;
+ type2 = t_ITEM;
+ break;
+ }
+ if (type1 != type2)
+ return type1 == t_PATH ? 1 : -1;
+ }
+ }
+
+ return dif;
+}
+
+
+/* Return a copy of the full filename of a flist entry, using the indicated
+ * buffer. No size-checking is done because we checked the size when creating
+ * the file_struct entry.
*/
-void clean_flist(struct file_list *flist)
-{
- int i;
-
- if (!flist || flist->count == 0)
- return;
-
- for (i=0;i<flist->count;i++) {
- clean_fname(flist->files[i].name);
- }
-
- qsort(flist->files,flist->count,
- sizeof(flist->files[0]),
- (int (*)())flist_compare);
-
- for (i=1;i<flist->count;i++) {
- if (flist->files[i].name &&
- strcmp(flist->files[i].name,flist->files[i-1].name) == 0) {
- if (verbose > 1 && !am_server)
- fprintf(stderr,"removing duplicate name %s from file list\n",
- flist->files[i].name);
- free(flist->files[i-1].name);
- flist->files[i-1].name = NULL;
- }
- }
+char *f_name_to(struct file_struct *f, char *fbuf)
+{
+ if (!f || !f->basename)
+ return NULL;
+
+ if (f->dirname) {
+ int len = strlen(f->dirname);
+ memcpy(fbuf, f->dirname, len);
+ fbuf[len] = '/';
+ strcpy(fbuf + len + 1, f->basename);
+ } else
+ strcpy(fbuf, f->basename);
+ return fbuf;
}
+
+/* Like f_name_to(), but we rotate through 5 static buffers of our own. */
+char *f_name(struct file_struct *f)
+{
+ static char names[5][MAXPATHLEN];
+ static unsigned int n;
+
+ n = (n + 1) % (sizeof names / sizeof names[0]);
+
+ return f_name_to(f, names[n]);
+}
+
+
+/* Do a non-recursive scan of the named directory, possibly ignoring all
+ * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
+ * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
+ * buffer (the functions we call will append names onto the end, but the old
+ * dir value will be restored on exit). */
+struct file_list *get_dirlist(char *dirname, int dlen,
+ int ignore_filter_rules)
+{
+ struct file_list *dirlist;
+ char dirbuf[MAXPATHLEN];
+ int save_recurse = recurse;
+
+ if (dlen < 0) {
+ dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
+ if (dlen >= MAXPATHLEN)
+ return NULL;
+ dirname = dirbuf;
+ }
+
+ dirlist = flist_new(WITHOUT_HLINK, "get_dirlist");
+
+ recurse = 0;
+ send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen);
+ recurse = save_recurse;
+ if (do_progress)
+ flist_count_offset += dirlist->count;
+
+ clean_flist(dirlist, 0, 0);
+
+ if (verbose > 3)
+ output_flist(dirlist);
+
+ return dirlist;
+}