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79028af116752d192634f44e672f0b8b51ba7785
android_external_rsync/flist.c
Wayne Davison 79028af116 Changed dup-detection code to keep the first item in the user's args. 
This is more in keeping with the way cp works, and also makes the dir-
joining code (in inc_recurse mode) easier.
2007-05-24 23:08:39 +00:00

2617 lines
66 KiB
C
Raw Blame History

/*
* Generate and receive file lists.
*
* Copyright (C) 1996 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
* Copyright (C) 2002-2007 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.,
* 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "rsync.h"
#include "rounding.h"
#include "io.h"
extern int verbose;
extern int list_only;
extern int am_root;
extern int am_server;
extern int am_daemon;
extern int am_sender;
extern int am_generator;
extern int inc_recurse;
extern int do_progress;
extern int always_checksum;
extern int module_id;
extern int ignore_errors;
extern int numeric_ids;
extern int recurse;
extern int use_qsort;
extern int xfer_dirs;
extern int filesfrom_fd;
extern int one_file_system;
extern int copy_dirlinks;
extern int keep_dirlinks;
extern int preserve_acls;
extern int preserve_xattrs;
extern int preserve_links;
extern int preserve_hard_links;
extern int preserve_devices;
extern int preserve_specials;
extern int preserve_uid;
extern int preserve_gid;
extern int relative_paths;
extern int implied_dirs;
extern int file_extra_cnt;
extern int ignore_perishable;
extern int non_perishable_cnt;
extern int prune_empty_dirs;
extern int copy_links;
extern int copy_unsafe_links;
extern int protocol_version;
extern int sanitize_paths;
extern struct stats stats;
extern char curr_dir[MAXPATHLEN];
extern struct chmod_mode_struct *chmod_modes;
extern struct filter_list_struct filter_list;
extern struct filter_list_struct server_filter_list;
#ifdef ICONV_OPTION
extern int ic_ndx;
extern int need_unsorted_flist;
extern iconv_t ic_send, ic_recv;
#endif
#define PTR_SIZE (sizeof (struct file_struct *))
int io_error;
int checksum_len;
dev_t filesystem_dev; /* used to implement -x */
struct file_list *cur_flist, *first_flist, *dir_flist;
int send_dir_ndx = -1, send_dir_depth = 0;
int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
int file_total = 0; /* total of all active items over all file-lists */
int flist_eof = 0; /* all the file-lists are now known */
/* The tmp_* vars are used as a cache area by make_file() to store data
* that the sender doesn't need to remember in its file list. The data
* will survive just long enough to be used by send_file_entry(). */
static dev_t tmp_rdev;
#ifdef SUPPORT_HARD_LINKS
static int64 tmp_dev, tmp_ino;
#endif
static char tmp_sum[MAX_DIGEST_LEN];
static char empty_sum[MAX_DIGEST_LEN];
static int flist_count_offset; /* for --delete --progress */
static int dir_count = 0;
static void clean_flist(struct file_list *flist, int strip_root);
static void output_flist(struct file_list *flist);
void init_flist(void)
{
if (verbose > 4) {
rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
(int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
}
checksum_len = protocol_version < 21 ? 2
: protocol_version < 30 ? MD4_DIGEST_LEN
: MD5_DIGEST_LEN;
}
static int show_filelist_p(void)
{
return verbose && xfer_dirs && !am_server && !inc_recurse;
}
static void start_filelist_progress(char *kind)
{
rprintf(FCLIENT, "%s ... ", kind);
if (verbose > 1 || do_progress)
rprintf(FCLIENT, "\n");
rflush(FINFO);
}
static void emit_filelist_progress(int count)
{
rprintf(FCLIENT, " %d files...\r", count);
}
static void maybe_emit_filelist_progress(int count)
{
if (do_progress && show_filelist_p() && (count % 100) == 0)
emit_filelist_progress(count);
}
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");
}
void show_flist_stats(void)
{
/* Nothing yet */
}
static void list_file_entry(struct file_struct *f)
{
char permbuf[PERMSTRING_SIZE];
double len;
if (!F_IS_ACTIVE(f)) {
/* this can happen if duplicate names were removed */
return;
}
permstring(permbuf, f->mode);
len = F_LENGTH(f);
/* TODO: indicate '+' if the entry has an ACL. */
#ifdef SUPPORT_LINKS
if (preserve_links && S_ISLNK(f->mode)) {
rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
permbuf, len, timestring(f->modtime),
f_name(f, NULL), F_SYMLINK(f));
} else
#endif
{
rprintf(FINFO, "%s %11.0f %s %s\n",
permbuf, len, timestring(f->modtime),
f_name(f, NULL));
}
}
/* Stat either a symlink or its referent, depending on the settings of
* copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
*
* If path is the name of a symlink, then the linkbuf buffer (which must hold
* MAXPATHLEN chars) will be set to the symlink's target string.
*
* The stat structure pointed to by stp will contain information about the
* link or the referent as appropriate, if they exist. */
static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
{
#ifdef SUPPORT_LINKS
if (link_stat(path, stp, copy_dirlinks) < 0)
return -1;
if (S_ISLNK(stp->st_mode)) {
int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
if (llen < 0)
return -1;
linkbuf[llen] = '\0';
if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
if (verbose > 1) {
rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
path, linkbuf);
}
return x_stat(path, stp, NULL);
}
}
return 0;
#else
return x_stat(path, stp, NULL);
#endif
}
int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
{
#ifdef SUPPORT_LINKS
if (copy_links)
return x_stat(path, stp, NULL);
if (x_lstat(path, stp, NULL) < 0)
return -1;
if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
STRUCT_STAT st;
if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
*stp = st;
}
return 0;
#else
return x_stat(path, stp, NULL);
#endif
}
/* 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;
}
static void send_directory(int f, struct file_list *flist,
char *fbuf, int len, int flags);
static const char *pathname, *orig_dir;
static int pathname_len;
/* Make sure flist can hold at least flist->count + extra entries. */
static void flist_expand(struct file_list *flist, int extra)
{
struct file_struct **new_ptr;
if (flist->count + extra <= 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 + extra)
flist->malloced = flist->count + extra;
new_ptr = realloc_array(flist->files, struct file_struct *,
flist->malloced);
if (verbose >= 2 && flist->malloced != FLIST_START) {
rprintf(FCLIENT, "[%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");
}
int push_pathname(const char *dir, int len)
{
if (dir == pathname)
return 1;
if (!orig_dir)
orig_dir = strdup(curr_dir);
if (pathname && !pop_dir(orig_dir)) {
rsyserr(FERROR, errno, "pop_dir %s failed",
full_fname(orig_dir));
exit_cleanup(RERR_FILESELECT);
}
if (dir && !push_dir(dir, 0)) {
io_error |= IOERR_GENERAL;
rsyserr(FERROR, errno, "push_dir %s failed in %s",
full_fname(dir), curr_dir);
return 0;
}
pathname = dir;
pathname_len = len >= 0 ? len : dir ? (int)strlen(dir) : 0;
return 1;
}
static void send_file_entry(int f, struct file_struct *file, int ndx)
{
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 *user_name, *group_name;
static char lastname[MAXPATHLEN];
char fname[MAXPATHLEN];
int first_hlink_ndx = -1;
int l1, l2;
int flags;
#ifdef ICONV_OPTION
if (ic_send != (iconv_t)-1) {
ICONV_CONST char *ibuf;
char *obuf = fname;
size_t ocnt = MAXPATHLEN, icnt;
iconv(ic_send, NULL,0, NULL,0);
if ((ibuf = (ICONV_CONST char *)file->dirname) != NULL) {
icnt = strlen(ibuf);
ocnt--; /* pre-subtract the space for the '/' */
if (iconv(ic_send, &ibuf,&icnt, &obuf,&ocnt) == (size_t)-1)
goto convert_error;
*obuf++ = '/';
}
ibuf = (ICONV_CONST char *)file->basename;
icnt = strlen(ibuf);
if (iconv(ic_send, &ibuf,&icnt, &obuf,&ocnt) == (size_t)-1) {
convert_error:
io_error |= IOERR_GENERAL;
rprintf(FINFO,
"[%s] cannot convert filename: %s (%s)\n",
who_am_i(), f_name(file, fname), strerror(errno));
return;
}
*obuf = '\0';
} else
#endif
f_name(file, fname);
flags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
if (file->mode == mode)
flags |= XMIT_SAME_MODE;
else
mode = file->mode;
if ((preserve_devices && IS_DEVICE(mode))
|| (preserve_specials && IS_SPECIAL(mode))) {
if (protocol_version < 28) {
if (tmp_rdev == rdev)
flags |= XMIT_SAME_RDEV_pre28;
else
rdev = tmp_rdev;
} else {
rdev = tmp_rdev;
if ((uint32)major(rdev) == rdev_major)
flags |= XMIT_SAME_RDEV_MAJOR;
else
rdev_major = major(rdev);
if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
flags |= XMIT_RDEV_MINOR_8_pre30;
}
} else if (protocol_version < 28)
rdev = MAKEDEV(0, 0);
if (preserve_uid) {
if ((uid_t)F_OWNER(file) == uid && *lastname)
flags |= XMIT_SAME_UID;
else {
uid = F_OWNER(file);
if (preserve_uid && !numeric_ids) {
user_name = add_uid(uid);
if (inc_recurse && user_name)
flags |= XMIT_USER_NAME_FOLLOWS;
}
}
}
if (preserve_gid) {
if ((gid_t)F_GROUP(file) == gid && *lastname)
flags |= XMIT_SAME_GID;
else {
gid = F_GROUP(file);
if (preserve_gid && !numeric_ids) {
group_name = add_gid(gid);
if (inc_recurse && group_name)
flags |= XMIT_GROUP_NAME_FOLLOWS;
}
}
}
if (file->modtime == modtime)
flags |= XMIT_SAME_TIME;
else
modtime = file->modtime;
#ifdef SUPPORT_HARD_LINKS
if (tmp_dev != 0) {
if (protocol_version >= 30) {
struct idev_node *np = idev_node(tmp_dev, tmp_ino);
first_hlink_ndx = (int32)(long)np->data - 1;
if (first_hlink_ndx < 0) {
np->data = (void*)(long)(ndx + 1);
flags |= XMIT_HLINK_FIRST;
}
flags |= XMIT_HLINKED;
} else {
if (tmp_dev == dev) {
if (protocol_version >= 28)
flags |= XMIT_SAME_DEV_pre30;
} else
dev = tmp_dev;
flags |= XMIT_HLINKED;
}
}
#endif
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_shortint(f, flags);
} else
write_byte(f, flags);
} else {
if (!(flags & 0xFF))
flags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
write_byte(f, flags);
}
if (flags & XMIT_SAME_NAME)
write_byte(f, l1);
if (flags & XMIT_LONG_NAME)
write_varint30(f, l2);
else
write_byte(f, l2);
write_buf(f, fname + l1, l2);
if (first_hlink_ndx >= 0) {
write_varint30(f, first_hlink_ndx);
goto the_end;
}
write_varlong30(f, F_LENGTH(file), 3);
if (!(flags & XMIT_SAME_TIME)) {
if (protocol_version >= 30)
write_varlong(f, modtime, 4);
else
write_int(f, modtime);
}
if (!(flags & XMIT_SAME_MODE))
write_int(f, to_wire_mode(mode));
if (preserve_uid && !(flags & XMIT_SAME_UID)) {
if (protocol_version < 30)
write_int(f, uid);
else {
write_varint(f, uid);
if (flags & XMIT_USER_NAME_FOLLOWS) {
int len = strlen(user_name);
write_byte(f, len);
write_buf(f, user_name, len);
}
}
}
if (preserve_gid && !(flags & XMIT_SAME_GID)) {
if (protocol_version < 30)
write_int(f, gid);
else {
write_varint(f, gid);
if (flags & XMIT_GROUP_NAME_FOLLOWS) {
int len = strlen(group_name);
write_byte(f, len);
write_buf(f, group_name, len);
}
}
}
if ((preserve_devices && IS_DEVICE(mode))
|| (preserve_specials && IS_SPECIAL(mode))) {
if (protocol_version < 28) {
if (!(flags & XMIT_SAME_RDEV_pre28))
write_int(f, (int)rdev);
} else {
if (!(flags & XMIT_SAME_RDEV_MAJOR))
write_varint30(f, major(rdev));
if (protocol_version >= 30)
write_varint(f, minor(rdev));
else if (flags & XMIT_RDEV_MINOR_8_pre30)
write_byte(f, minor(rdev));
else
write_int(f, minor(rdev));
}
}
#ifdef SUPPORT_LINKS
if (preserve_links && S_ISLNK(mode)) {
const char *sl = F_SYMLINK(file);
int len = strlen(sl);
write_varint30(f, len);
write_buf(f, sl, len);
}
#endif
#ifdef SUPPORT_HARD_LINKS
if (tmp_dev != 0 && protocol_version < 30) {
if (protocol_version < 26) {
/* 32-bit dev_t and ino_t */
write_int(f, (int32)dev);
write_int(f, (int32)tmp_ino);
} else {
/* 64-bit dev_t and ino_t */
if (!(flags & XMIT_SAME_DEV_pre30))
write_longint(f, dev);
write_longint(f, tmp_ino);
}
}
#endif
if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
const char *sum;
if (S_ISREG(mode))
sum = tmp_sum;
else {
/* Prior to 28, we sent a useless set of nulls. */
sum = empty_sum;
}
write_buf(f, sum, checksum_len);
}
the_end:
strlcpy(lastname, fname, MAXPATHLEN);
if (S_ISREG(mode) || S_ISLNK(mode))
stats.total_size += F_LENGTH(file);
}
static struct file_struct *recv_file_entry(struct file_list *flist,
int xflags, int f)
{
static int64 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 uint16 gid_flags;
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, linkname_len;
int extra_len = file_extra_cnt * EXTRA_LEN;
int first_hlink_ndx = -1;
OFF_T file_length;
const char *basename;
struct file_struct *file;
alloc_pool_t *pool;
char *bp;
if (xflags & XMIT_SAME_NAME)
l1 = read_byte(f);
if (xflags & XMIT_LONG_NAME)
l2 = read_varint30(f);
else
l2 = read_byte(f);
if (l2 >= MAXPATHLEN - l1) {
rprintf(FERROR,
"overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
xflags, l1, l2, lastname, who_am_i());
overflow_exit("recv_file_entry");
}
strlcpy(thisname, lastname, l1 + 1);
read_sbuf(f, &thisname[l1], l2);
thisname[l1 + l2] = 0;
/* Abuse basename_len for a moment... */
basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
#ifdef ICONV_OPTION
if (ic_recv != (iconv_t)-1) {
char *obuf = thisname;
ICONV_CONST char *ibuf = (ICONV_CONST char *)lastname;
size_t ocnt = MAXPATHLEN, icnt = basename_len;
if (icnt >= MAXPATHLEN) {
errno = E2BIG;
goto convert_error;
}
iconv(ic_recv, NULL,0, NULL,0);
if (iconv(ic_recv, &ibuf,&icnt, &obuf,&ocnt) == (size_t)-1) {
convert_error:
io_error |= IOERR_GENERAL;
rprintf(FINFO,
"[%s] cannot convert filename: %s (%s)\n",
who_am_i(), lastname, strerror(errno));
obuf = thisname;
}
*obuf = '\0';
}
#endif
clean_fname(thisname, 0);
if (sanitize_paths)
sanitize_path(thisname, thisname, "", 0, NULL);
if ((basename = strrchr(thisname, '/')) != NULL) {
int len = basename++ - thisname;
if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
lastdir = new_array(char, len + 1);
memcpy(lastdir, thisname, len);
lastdir[len] = '\0';
lastdir_len = len;
lastdir_depth = count_dir_elements(lastdir);
}
} else
basename = thisname;
basename_len = strlen(basename) + 1; /* count the '\0' */
#ifdef SUPPORT_HARD_LINKS
if (protocol_version >= 30
&& BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
struct file_struct *first;
first_hlink_ndx = read_varint30(f);
if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->count) {
rprintf(FERROR,
"hard-link reference out of range: %d (%d)\n",
first_hlink_ndx, flist->count);
exit_cleanup(RERR_PROTOCOL);
}
first = flist->files[first_hlink_ndx];
file_length = F_LENGTH(first);
modtime = first->modtime;
mode = first->mode;
if (preserve_uid)
uid = F_OWNER(first);
if (preserve_gid)
gid = F_GROUP(first);
if ((preserve_devices && IS_DEVICE(mode))
|| (preserve_specials && IS_SPECIAL(mode))) {
uint32 *devp = F_RDEV_P(first);
rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
extra_len += 2 * EXTRA_LEN;
}
if (preserve_links && S_ISLNK(mode))
linkname_len = strlen(F_SYMLINK(first)) + 1;
else
linkname_len = 0;
goto create_object;
}
#endif
file_length = read_varlong30(f, 3);
if (!(xflags & XMIT_SAME_TIME)) {
if (protocol_version >= 30) {
modtime = read_varlong(f, 4);
#if SIZEOF_TIME_T < SIZEOF_INT64
if ((modtime > INT_MAX || modtime < INT_MIN) && !am_generator) {
rprintf(FERROR,
"Time value of %s truncated on receiver.\n",
lastname);
}
#endif
} else
modtime = read_int(f);
}
if (!(xflags & XMIT_SAME_MODE))
mode = from_wire_mode(read_int(f));
if (chmod_modes && !S_ISLNK(mode))
mode = tweak_mode(mode, chmod_modes);
if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
if (protocol_version < 30)
uid = (uid_t)read_int(f);
else {
uid = (uid_t)read_varint(f);
if (xflags & XMIT_USER_NAME_FOLLOWS)
uid = recv_user_name(f, uid);
else if (inc_recurse && am_root && !numeric_ids)
uid = match_uid(uid);
}
}
if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
if (protocol_version < 30)
gid = (gid_t)read_int(f);
else {
gid = (gid_t)read_varint(f);
gid_flags = 0;
if (xflags & XMIT_GROUP_NAME_FOLLOWS)
gid = recv_group_name(f, gid, &gid_flags);
else if (inc_recurse && (!am_root || !numeric_ids))
gid = match_gid(gid, &gid_flags);
}
}
if ((preserve_devices && IS_DEVICE(mode))
|| (preserve_specials && IS_SPECIAL(mode))) {
if (protocol_version < 28) {
if (!(xflags & XMIT_SAME_RDEV_pre28))
rdev = (dev_t)read_int(f);
} else {
uint32 rdev_minor;
if (!(xflags & XMIT_SAME_RDEV_MAJOR))
rdev_major = read_varint30(f);
if (protocol_version >= 30)
rdev_minor = read_varint(f);
else if (xflags & XMIT_RDEV_MINOR_8_pre30)
rdev_minor = read_byte(f);
else
rdev_minor = read_int(f);
rdev = MAKEDEV(rdev_major, rdev_minor);
}
extra_len += 2 * EXTRA_LEN;
file_length = 0;
} else if (protocol_version < 28)
rdev = MAKEDEV(0, 0);
#ifdef SUPPORT_LINKS
if (preserve_links && S_ISLNK(mode)) {
linkname_len = read_varint30(f) + 1; /* count the '\0' */
if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
rprintf(FERROR, "overflow: linkname_len=%d\n",
linkname_len - 1);
overflow_exit("recv_file_entry");
}
}
else
#endif
linkname_len = 0;
#ifdef SUPPORT_HARD_LINKS
create_object:
if (preserve_hard_links) {
if (protocol_version < 28 && S_ISREG(mode))
xflags |= XMIT_HLINKED;
if (xflags & XMIT_HLINKED)
extra_len += EXTRA_LEN;
}
#endif
#ifdef SUPPORT_ACLS
/* We need one or two index int32s when we're preserving ACLs. */
if (preserve_acls)
extra_len += (S_ISDIR(mode) ? 2 : 1) * EXTRA_LEN;
#endif
if (always_checksum && S_ISREG(mode))
extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
extra_len += EXTRA_LEN;
#if EXTRA_ROUNDING > 0
if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
#endif
if (inc_recurse && S_ISDIR(mode)) {
if (one_file_system) {
/* Room to save the dir's device for -x */
extra_len += 2 * EXTRA_LEN;
}
pool = dir_flist->file_pool;
} else
pool = flist->file_pool;
alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
+ linkname_len;
bp = pool_alloc(pool, alloc_len, "recv_file_entry");
memset(bp, 0, extra_len + FILE_STRUCT_LEN);
bp += extra_len;
file = (struct file_struct *)bp;
bp += FILE_STRUCT_LEN;
memcpy(bp, basename, basename_len);
bp += basename_len + linkname_len; /* skip space for symlink too */
#ifdef SUPPORT_HARD_LINKS
if (xflags & XMIT_HLINKED)
file->flags |= FLAG_HLINKED;
#endif
file->modtime = (time_t)modtime;
file->len32 = (uint32)file_length;
if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
file->flags |= FLAG_LENGTH64;
OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
}
file->mode = mode;
if (preserve_uid)
F_OWNER(file) = uid;
if (preserve_gid) {
F_GROUP(file) = gid;
file->flags |= gid_flags;
}
#ifdef ICONV_OPTION
if (ic_ndx)
F_NDX(file) = flist->count + flist->ndx_start;
#endif
if (basename != thisname) {
file->dirname = lastdir;
F_DEPTH(file) = lastdir_depth + 1;
} else
F_DEPTH(file) = 1;
if (S_ISDIR(mode)) {
if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
F_DEPTH(file)--;
if (xflags & XMIT_TOP_DIR) {
in_del_hier = recurse;
del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
if (relative_paths && del_hier_name_len > 2
&& lastname[del_hier_name_len-1] == '.'
&& lastname[del_hier_name_len-2] == '/')
del_hier_name_len -= 2;
file->flags |= FLAG_TOP_DIR | FLAG_XFER_DIR;
} else if (in_del_hier) {
if (!relative_paths || !del_hier_name_len
|| (l1 >= del_hier_name_len
&& lastname[del_hier_name_len] == '/'))
file->flags |= FLAG_XFER_DIR;
else
in_del_hier = 0;
}
}
if ((preserve_devices && IS_DEVICE(mode))
|| (preserve_specials && IS_SPECIAL(mode))) {
uint32 *devp = F_RDEV_P(file);
DEV_MAJOR(devp) = major(rdev);
DEV_MINOR(devp) = minor(rdev);
}
#ifdef SUPPORT_LINKS
if (linkname_len) {
bp = (char*)file->basename + basename_len;
if (first_hlink_ndx >= 0) {
struct file_struct *first = flist->files[first_hlink_ndx];
memcpy(bp, F_SYMLINK(first), linkname_len);
} else
read_sbuf(f, bp, linkname_len - 1);
if (sanitize_paths)
sanitize_path(bp, bp, "", lastdir_depth, NULL);
}
#endif
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && xflags & XMIT_HLINKED) {
if (protocol_version >= 30) {
F_HL_GNUM(file) = xflags & XMIT_HLINK_FIRST
? flist->count : first_hlink_ndx;
} else {
static int32 cnt = 0;
struct idev_node *np;
int64 ino;
int32 ndx;
if (protocol_version < 26) {
dev = read_int(f);
ino = read_int(f);
} else {
if (!(xflags & XMIT_SAME_DEV_pre30))
dev = read_longint(f);
ino = read_longint(f);
}
np = idev_node(dev, ino);
ndx = (int32)(long)np->data - 1;
if (ndx < 0) {
ndx = cnt++;
np->data = (void*)(long)cnt;
}
F_HL_GNUM(file) = ndx;
}
}
#endif
if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
if (S_ISREG(mode))
bp = (char*)F_SUM(file);
else {
/* Prior to 28, we get a useless set of nulls. */
bp = tmp_sum;
}
if (first_hlink_ndx >= 0) {
struct file_struct *first = flist->files[first_hlink_ndx];
memcpy(bp, F_SUM(first), checksum_len);
} else
read_buf(f, bp, checksum_len);
}
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(mode))
receive_acl(file, f);
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs)
receive_xattr(file, f );
#endif
if (S_ISREG(mode) || S_ISLNK(mode))
stats.total_size += file_length;
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(const char *fname, struct file_list *flist,
STRUCT_STAT *stp, int flags, int filter_level)
{
static char *lastdir;
static int lastdir_len = -1;
struct file_struct *file;
STRUCT_STAT st;
char thisname[MAXPATHLEN];
char linkname[MAXPATHLEN];
int alloc_len, basename_len, linkname_len;
int extra_len = file_extra_cnt * EXTRA_LEN;
const char *basename;
alloc_pool_t *pool;
char *bp;
if (strlcpy(thisname, fname, sizeof thisname)
>= sizeof thisname - pathname_len) {
rprintf(FINFO, "skipping overly long name: %s\n", fname);
return NULL;
}
clean_fname(thisname, 0);
if (sanitize_paths)
sanitize_path(thisname, thisname, "", 0, NULL);
if (stp && S_ISDIR(stp->st_mode)) {
st = *stp; /* Needed for "symlink/." with --relative. */
*linkname = '\0'; /* make IBM code checker happy */
} else 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)
|| is_excluded(thisname, 1, filter_level))) {
if (ignore_perishable && save_errno != ENOENT)
non_perishable_cnt++;
return NULL;
}
if (save_errno == ENOENT) {
#ifdef SUPPORT_LINKS
/* Avoid "vanished" error if symlink points nowhere. */
if (copy_links && x_lstat(thisname, &st, NULL) == 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", thisname);
return NULL;
}
/* -x only affects 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)) {
if (one_file_system > 1) {
if (verbose > 2) {
rprintf(FINFO, "skipping mount-point dir %s\n",
thisname);
}
return NULL;
}
flags |= FLAG_MOUNT_DIR;
}
if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
if (ignore_perishable)
non_perishable_cnt++;
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:
/* Only divert a directory in the main transfer. */
if (flist) {
if (flist->prev && S_ISDIR(st.st_mode)
&& flags & FLAG_DIVERT_DIRS) {
/* Room for parent/sibling/next-child info. */
extra_len += 3 * EXTRA_LEN;
dir_count++;
pool = dir_flist->file_pool;
} else
pool = flist->file_pool;
} else
pool = NULL;
if (verbose > 2) {
rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
who_am_i(), thisname, filter_level);
}
if ((basename = strrchr(thisname, '/')) != NULL) {
int len = basename++ - thisname;
if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
lastdir = new_array(char, len + 1);
memcpy(lastdir, thisname, len);
lastdir[len] = '\0';
lastdir_len = len;
}
} else
basename = thisname;
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
if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
extra_len += EXTRA_LEN;
#if EXTRA_ROUNDING > 0
if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
#endif
alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
+ linkname_len;
if (pool)
bp = pool_alloc(pool, alloc_len, "make_file");
else {
if (!(bp = new_array(char, alloc_len)))
out_of_memory("make_file");
}
memset(bp, 0, extra_len + FILE_STRUCT_LEN);
bp += extra_len;
file = (struct file_struct *)bp;
bp += FILE_STRUCT_LEN;
memcpy(bp, basename, basename_len);
bp += basename_len + linkname_len; /* skip space for symlink too */
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && flist && flist->prev) {
if (protocol_version >= 28
? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
: S_ISREG(st.st_mode)) {
tmp_dev = st.st_dev;
tmp_ino = st.st_ino;
} else
tmp_dev = 0;
}
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
tmp_rdev = st.st_rdev;
st.st_size = 0;
}
#endif
file->flags = flags;
file->modtime = st.st_mtime;
file->len32 = (uint32)st.st_size;
if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
file->flags |= FLAG_LENGTH64;
OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
}
file->mode = st.st_mode;
if (preserve_uid)
F_OWNER(file) = st.st_uid;
if (preserve_gid)
F_GROUP(file) = st.st_gid;
if (basename != thisname)
file->dirname = lastdir;
#ifdef SUPPORT_LINKS
if (linkname_len) {
bp = (char*)file->basename + basename_len;
memcpy(bp, linkname, linkname_len);
}
#endif
if (always_checksum && am_sender && S_ISREG(st.st_mode))
file_checksum(thisname, tmp_sum, st.st_size);
F_PATHNAME(file) = pathname;
/* 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 with our name. */
if (flist_find(dir_flist, file) >= 0
&& x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
file->modtime = st2.st_mtime;
file->len32 = 0;
file->mode = st2.st_mode;
if (preserve_uid)
F_OWNER(file) = st2.st_uid;
if (preserve_gid)
F_GROUP(file) = st2.st_gid;
} else
file->mode = save_mode;
}
if (basename_len == 0+1)
return NULL;
#ifdef ICONV_OPTION
if (ic_ndx)
F_NDX(file) = dir_count - 1;
#endif
return file;
}
/* Only called for temporary file_struct entries created by make_file(). */
void unmake_file(struct file_struct *file)
{
int extra_cnt = file_extra_cnt + LEN64_BUMP(file);
#if EXTRA_ROUNDING > 0
if (extra_cnt & EXTRA_ROUNDING)
extra_cnt = (extra_cnt | EXTRA_ROUNDING) + 1;
#endif
free(REQ_EXTRA(file, extra_cnt));
}
static struct file_struct *send_file_name(int f, struct file_list *flist,
char *fname, STRUCT_STAT *stp,
int flags, int filter_flags)
{
struct file_struct *file;
#if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
statx sx;
#endif
file = make_file(fname, flist, stp, flags, filter_flags);
if (!file)
return NULL;
if (chmod_modes && !S_ISLNK(file->mode))
file->mode = tweak_mode(file->mode, chmod_modes);
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode) && f >= 0) {
sx.st.st_mode = file->mode;
sx.acc_acl = sx.def_acl = NULL;
if (get_acl(fname, &sx) < 0)
return NULL;
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs && f >= 0) {
sx.xattr = NULL;
if (get_xattr(fname, &sx) < 0)
return NULL;
}
#endif
maybe_emit_filelist_progress(flist->count + flist_count_offset);
flist_expand(flist, 1);
flist->files[flist->count++] = file;
if (f >= 0) {
send_file_entry(f, file, flist->count - 1);
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
send_acl(&sx, f);
free_acl(&sx);
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
F_XATTR(file) = send_xattr(&sx, f);
free_xattr(&sx);
}
#endif
}
return file;
}
static void send_if_directory(int f, struct file_list *flist,
struct file_struct *file,
char *fbuf, unsigned int ol,
int flags)
{
char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
if (S_ISDIR(file->mode)
&& !(file->flags & FLAG_MOUNT_DIR) && f_name(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, flags);
pop_local_filters(save_filters);
fbuf[ol] = '\0';
if (is_dot_dir)
fbuf[ol-1] = '.';
}
}
static int file_compare(const void *file1, const void *file2)
{
return f_name_cmp(*(struct file_struct **)file1,
*(struct file_struct **)file2);
}
/* The guts of a merge sort algorithm. This was derived from the GNU C
* version, but I (Wayne) changed the merge code to do less copying and
* to require only half the amount of temporary memory. */
static void fsort_tmp(struct file_struct **fp, size_t num,
struct file_struct **tmp)
{
struct file_struct **f1, **f2, **t;
size_t n1, n2;
n1 = num / 2;
n2 = num - n1;
f1 = fp;
f2 = fp + n1;
if (n1 > 1)
fsort_tmp(f1, n1, tmp);
if (n2 > 1)
fsort_tmp(f2, n2, tmp);
while (f_name_cmp(*f1, *f2) <= 0) {
if (!--n1)
return;
f1++;
}
t = tmp;
memcpy(t, f1, n1 * PTR_SIZE);
*f1++ = *f2++, n2--;
while (n1 > 0 && n2 > 0) {
if (f_name_cmp(*t, *f2) <= 0)
*f1++ = *t++, n1--;
else
*f1++ = *f2++, n2--;
}
if (n1 > 0)
memcpy(f1, t, n1 * PTR_SIZE);
}
/* This file-struct sorting routine makes sure that any identical names in
* the file list stay in the same order as they were in the original list.
* This is particularly vital in inc_recurse mode where we expect a sort
* on the flist to match the exact order of a sort on the dir_flist. */
static void fsort(struct file_struct **fp, size_t num)
{
if (num <= 1)
return;
if (use_qsort)
qsort(fp, num, PTR_SIZE, file_compare);
else {
struct file_struct **tmp = new_array(struct file_struct *,
(num+1) / 2);
fsort_tmp(fp, num, tmp);
free(tmp);
}
}
/* We take an entire set of sibling dirs from the sorted flist and link them
* into the tree, setting the appropriate parent/child/sibling pointers. */
static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
int dir_cnt)
{
int i;
int32 *dp = NULL;
int32 *parent_dp = parent_ndx < 0 ? NULL
: F_DIRNODE_P(dir_flist->sorted[parent_ndx]);
flist_expand(dir_flist, dir_cnt);
dir_flist->sorted = dir_flist->files;
for (i = 0; dir_cnt; i++) {
struct file_struct *file = from_flist->sorted[i];
if (!S_ISDIR(file->mode))
continue;
dir_flist->files[dir_flist->count++] = file;
dir_cnt--;
if (!(file->flags & FLAG_XFER_DIR)
|| file->flags & FLAG_MOUNT_DIR)
continue;
if (dp)
DIR_NEXT_SIBLING(dp) = dir_flist->count - 1;
else if (parent_dp)
DIR_FIRST_CHILD(parent_dp) = dir_flist->count - 1;
else
send_dir_ndx = dir_flist->count - 1;
dp = F_DIRNODE_P(file);
DIR_PARENT(dp) = parent_ndx;
DIR_FIRST_CHILD(dp) = -1;
}
if (dp)
DIR_NEXT_SIBLING(dp) = -1;
}
/* 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,
int flags)
{
struct dirent *di;
unsigned remainder;
char *p;
DIR *d;
int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
int start = flist->count;
int filter_flags = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
assert(flist != NULL);
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) {
io_error |= IOERR_GENERAL;
rprintf(FINFO,
"cannot send long-named file %s\n",
full_fname(fbuf));
continue;
}
send_file_name(f, flist, fbuf, NULL, flags, filter_flags);
}
fbuf[len] = '\0';
if (errno) {
io_error |= IOERR_GENERAL;
rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
}
closedir(d);
if (f >= 0 && recurse && !divert_dirs) {
int i, end = flist->count - 1;
/* send_if_directory() bumps flist->count, so use "end". */
for (i = start; i <= end; i++)
send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
}
}
static void send1extra(int f, struct file_struct *file, struct file_list *flist)
{
char fbuf[MAXPATHLEN];
int dlen;
f_name(file, fbuf);
dlen = strlen(fbuf);
if (F_PATHNAME(file) != pathname) {
if (!push_pathname(F_PATHNAME(file), -1))
exit_cleanup(RERR_FILESELECT);
}
change_local_filter_dir(fbuf, dlen, send_dir_depth);
send_directory(f, flist, fbuf, dlen, FLAG_DIVERT_DIRS | FLAG_XFER_DIR);
}
void send_extra_file_list(int f, int at_least)
{
struct file_list *flist;
int64 start_write;
int future_cnt, save_io_error = io_error;
if (flist_eof)
return;
/* Keep sending data until we have the requested number of
* files in the upcoming file-lists. */
if (cur_flist->next) {
flist = first_flist->prev; /* the newest flist */
future_cnt = flist->count + flist->ndx_start
- cur_flist->next->ndx_start;
} else
future_cnt = 0;
while (future_cnt < at_least) {
struct file_struct *file = dir_flist->sorted[send_dir_ndx];
int dir_ndx, dstart = dir_count;
int32 *dp;
flist = flist_new(0, "send_extra_file_list");
start_write = stats.total_written;
#ifdef ICONV_OPTION
if (ic_ndx)
dir_ndx = F_NDX(file);
else
#endif
dir_ndx = send_dir_ndx;
write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
send1extra(f, file, flist);
dp = F_DIRNODE_P(file);
/* If there are any duplicate directory names that follow, we
* send all the dirs together in one file-list. The dir_flist
* tree links all the child subdirs onto the last dup dir. */
while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
&& dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
send_dir_ndx = dir_ndx;
file = dir_flist->sorted[dir_ndx];
send1extra(f, file, flist);
dp = F_DIRNODE_P(file);
}
write_byte(f, 0);
#ifdef ICONV_OPTION
if (need_unsorted_flist) {
if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
out_of_memory("send_extra_file_list");
memcpy(flist->sorted, flist->files,
flist->count * sizeof (struct file_struct*));
} else
#endif
flist->sorted = flist->files;
clean_flist(flist, 0);
add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
file_total += flist->count;
future_cnt += flist->count;
stats.flist_size += stats.total_written - start_write;
stats.num_files += flist->count;
if (verbose > 3)
output_flist(flist);
if (DIR_FIRST_CHILD(dp) >= 0) {
send_dir_ndx = DIR_FIRST_CHILD(dp);
send_dir_depth++;
} else {
while (DIR_NEXT_SIBLING(dp) < 0) {
if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
write_ndx(f, NDX_FLIST_EOF);
flist_eof = 1;
change_local_filter_dir(NULL, 0, 0);
goto finish;
}
send_dir_depth--;
file = dir_flist->sorted[send_dir_ndx];
dp = F_DIRNODE_P(file);
}
send_dir_ndx = DIR_NEXT_SIBLING(dp);
}
}
finish:
if (io_error != save_io_error && !ignore_errors)
send_msg_int(MSG_IO_ERROR, io_error);
}
struct file_list *send_file_list(int f, int argc, char *argv[])
{
static const char *lastdir;
static int lastdir_len = -1;
int len, dirlen;
STRUCT_STAT st;
char *p, *dir;
char lastpath[MAXPATHLEN] = "";
struct file_list *flist;
struct timeval start_tv, end_tv;
int64 start_write;
int use_ff_fd = 0;
int flags, disable_buffering;
rprintf(FLOG, "building file list\n");
if (show_filelist_p())
start_filelist_progress("building file list");
else if (inc_recurse && verbose && !am_server)
rprintf(FCLIENT, "sending incremental file list\n");
start_write = stats.total_written;
gettimeofday(&start_tv, NULL);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
init_hard_links();
#endif
flist = cur_flist = flist_new(0, "send_file_list");
if (inc_recurse) {
dir_flist = flist_new(FLIST_TEMP, "send_file_list");
flags = FLAG_DIVERT_DIRS;
} else {
dir_flist = cur_flist;
flags = 0;
}
disable_buffering = io_start_buffering_out(f);
if (filesfrom_fd >= 0) {
if (argv[0] && !push_dir(argv[0], 0)) {
rsyserr(FERROR, errno, "push_dir %s failed in %s",
full_fname(argv[0]), curr_dir);
exit_cleanup(RERR_FILESELECT);
}
use_ff_fd = 1;
}
while (1) {
char fbuf[MAXPATHLEN];
char *fn;
int is_dot_dir;
if (use_ff_fd) {
if (read_filesfrom_line(filesfrom_fd, fbuf) == 0)
break;
sanitize_path(fbuf, fbuf, "", 0, NULL);
} else {
if (argc-- == 0)
break;
strlcpy(fbuf, *argv++, MAXPATHLEN);
if (sanitize_paths)
sanitize_path(fbuf, fbuf, "", 0, NULL);
}
len = strlen(fbuf);
if (relative_paths) {
/* We clean up fbuf below. */
is_dot_dir = 0;
} else if (!len || fbuf[len - 1] == '/') {
if (len == 2 && fbuf[0] == '.') {
/* Turn "./" into just "." rather than "./." */
fbuf[1] = '\0';
} else {
if (len + 1 >= MAXPATHLEN)
overflow_exit("send_file_list");
fbuf[len++] = '.';
fbuf[len] = '\0';
}
is_dot_dir = 1;
} else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
&& (len == 2 || fbuf[len-3] == '/')) {
if (len + 2 >= MAXPATHLEN)
overflow_exit("send_file_list");
fbuf[len++] = '/';
fbuf[len++] = '.';
fbuf[len] = '\0';
is_dot_dir = 1;
} else {
is_dot_dir = fbuf[len-1] == '.'
&& (len == 1 || fbuf[len-2] == '/');
}
dir = NULL;
if (!relative_paths) {
p = strrchr(fbuf, '/');
if (p) {
*p = '\0';
if (p == fbuf)
dir = "/";
else
dir = fbuf;
len -= p - fbuf + 1;
fn = p + 1;
} else
fn = fbuf;
} else {
if ((p = strstr(fbuf, "/./")) != NULL) {
*p = '\0';
if (p == fbuf)
dir = "/";
else
dir = fbuf;
len -= p - fbuf + 3;
fn = p + 3;
} else
fn = fbuf;
/* Get rid of trailing "/" and "/.". */
while (len) {
if (fn[len - 1] == '/') {
is_dot_dir = 1;
if (!--len && !dir) {
len++;
break;
}
}
else if (len >= 2 && fn[len - 1] == '.'
&& fn[len - 2] == '/') {
is_dot_dir = 1;
if (!(len -= 2) && !dir) {
len++;
break;
}
} else
break;
}
if (len == 1 && fn[0] == '/')
fn[len++] = '.';
fn[len] = '\0';
/* Reject a ".." dir in the active part of the path. */
for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
if ((p[2] == '/' || p[2] == '\0')
&& (p == fn || p[-1] == '/')) {
rprintf(FERROR,
"found \"..\" dir in relative path: %s\n",
fbuf);
exit_cleanup(RERR_SYNTAX);
}
}
}
if (!*fn) {
len = 1;
fn = ".";
}
dirlen = dir ? strlen(dir) : 0;
if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
if (!push_pathname(dir ? strdup(dir) : NULL, dirlen))
goto push_error;
lastdir = pathname;
lastdir_len = pathname_len;
} else if (!push_pathname(lastdir, lastdir_len)) {
push_error:
io_error |= IOERR_GENERAL;
rsyserr(FERROR, errno, "push_dir %s failed in %s",
full_fname(dir), curr_dir);
continue;
}
if (fn != fbuf)
memmove(fbuf, fn, len + 1);
if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
io_error |= IOERR_GENERAL;
rsyserr(FERROR, errno, "link_stat %s failed",
full_fname(fbuf));
continue;
}
if (S_ISDIR(st.st_mode) && !xfer_dirs) {
rprintf(FINFO, "skipping directory %s\n", fbuf);
continue;
}
if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
/* Send the implied directories at the start of the
* source spec, so we get their permissions right. */
char *lp = lastpath, *slash = fbuf;
*p = '\0';
/* Skip any initial directories in our path that we
* have in common with lastpath. */
for (fn = fbuf; *fn && *lp == *fn; lp++, fn++) {
if (*fn == '/')
slash = fn;
}
*p = '/';
if (fn != p || (*lp && *lp != '/')) {
int save_copy_links = copy_links;
int save_xfer_dirs = xfer_dirs;
int dir_flags = inc_recurse ? FLAG_DIVERT_DIRS : 0;
copy_links |= copy_unsafe_links;
xfer_dirs = 1;
while ((slash = strchr(slash+1, '/')) != 0) {
*slash = '\0';
send_file_name(f, flist, fbuf, NULL,
dir_flags, ALL_FILTERS);
*slash = '/';
}
copy_links = save_copy_links;
xfer_dirs = save_xfer_dirs;
*p = '\0';
strlcpy(lastpath, fbuf, sizeof lastpath);
*p = '/';
}
}
if (one_file_system)
filesystem_dev = st.st_dev;
if (recurse || (xfer_dirs && is_dot_dir)) {
struct file_struct *file;
int top_flags = FLAG_TOP_DIR | FLAG_XFER_DIR | flags;
file = send_file_name(f, flist, fbuf, &st,
top_flags, ALL_FILTERS);
if (file && !inc_recurse)
send_if_directory(f, flist, file, fbuf, len, flags);
} else
send_file_name(f, flist, fbuf, &st, flags, ALL_FILTERS);
}
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;
write_byte(f, 0); /* Indicate end of file list */
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
idev_destroy();
#endif
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;
/* When converting names, both sides keep an unsorted file-list array
* because the names will differ on the sending and receiving sides
* (both sides will use the unsorted index number for each item). */
/* Sort the list without removing any duplicates. This allows the
* receiving side to ask for whatever name it kept. For incremental
* recursion mode, the sender marks duplicate dirs so that it can
* send them together in a single file-list. */
#ifdef ICONV_OPTION
if (need_unsorted_flist) {
if (inc_recurse) {
if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
out_of_memory("send_file_list");
memcpy(flist->sorted, flist->files,
flist->count * sizeof (struct file_struct*));
clean_flist(flist, 0);
} else
flist->sorted = flist->files;
} else
#endif
{
flist->sorted = flist->files;
clean_flist(flist, 0);
}
file_total += flist->count;
if (!numeric_ids && !inc_recurse)
send_id_list(f);
/* send the io_error flag */
if (protocol_version < 30)
write_int(f, ignore_errors ? 0 : io_error);
else if (io_error && !ignore_errors)
send_msg_int(MSG_IO_ERROR, io_error);
if (disable_buffering)
io_end_buffering_out();
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");
if (inc_recurse) {
add_dirs_to_tree(-1, flist, dir_count);
if (send_dir_ndx < 0) {
write_ndx(f, NDX_FLIST_EOF);
flist_eof = 1;
}
else if (file_total == 1) {
/* If we're creating incremental file-lists and there
* was just 1 item in the first file-list, send 1 more
* file-list to check if this is a 1-file xfer. */
send_extra_file_list(f, 1);
}
}
return flist;
}
struct file_list *recv_file_list(int f)
{
struct file_list *flist;
int dstart, flags;
int64 start_read;
if (!first_flist)
rprintf(FLOG, "receiving file list\n");
if (show_filelist_p())
start_filelist_progress("receiving file list");
else if (inc_recurse && verbose && !am_server && !first_flist)
rprintf(FCLIENT, "receiving incremental file list\n");
start_read = stats.total_read;
flist = flist_new(0, "recv_file_list");
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && protocol_version < 30)
init_hard_links();
#endif
if (inc_recurse) {
if (flist->ndx_start == 0)
dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
dstart = dir_flist->count;
} else {
dir_flist = flist;
dstart = 0;
}
while ((flags = read_byte(f)) != 0) {
struct file_struct *file;
flist_expand(flist, 1);
if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
flags |= read_byte(f) << 8;
file = recv_file_entry(flist, flags, f);
if (inc_recurse && S_ISDIR(file->mode)) {
flist_expand(dir_flist, 1);
dir_flist->files[dir_flist->count++] = file;
}
flist->files[flist->count++] = file;
maybe_emit_filelist_progress(flist->count);
if (verbose > 2) {
rprintf(FINFO, "recv_file_name(%s)\n",
f_name(file, NULL));
}
}
file_total += flist->count;
if (verbose > 2)
rprintf(FINFO, "received %d names\n", flist->count);
if (show_filelist_p())
finish_filelist_progress(flist);
#ifdef ICONV_OPTION
if (need_unsorted_flist) {
/* Create an extra array of index pointers that we can sort for
* the generator's use (for wading through the files in sorted
* order and for calling flist_find()). We keep the "files"
* list unsorted for our exchange of index numbers with the
* other side (since their names may not sort the same). */
if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
out_of_memory("recv_file_list");
memcpy(flist->sorted, flist->files,
flist->count * sizeof (struct file_struct*));
if (inc_recurse && dir_flist->count > dstart) {
dir_flist->sorted = realloc_array(dir_flist->sorted,
struct file_struct *,
dir_flist->count);
memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
(dir_flist->count - dstart) * sizeof (struct file_struct*));
fsort(dir_flist->sorted + dstart, dir_flist->count - dstart);
}
} else
#endif
{
flist->sorted = flist->files;
if (inc_recurse && dir_flist->count > dstart) {
dir_flist->sorted = dir_flist->files;
fsort(dir_flist->sorted + dstart, dir_flist->count - dstart);
}
}
if (!inc_recurse && f >= 0)
recv_id_list(f, flist);
clean_flist(flist, relative_paths);
if (protocol_version < 30) {
/* Recv the io_error flag */
if (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;
}
/* This is only used once by the receiver if the very first file-list
* has exactly one item in it. */
void recv_additional_file_list(int f)
{
struct file_list *flist;
int ndx = read_ndx(f);
if (ndx == NDX_FLIST_EOF) {
flist_eof = 1;
change_local_filter_dir(NULL, 0, 0);
} else {
ndx = NDX_FLIST_OFFSET - ndx;
if (ndx < 0 || ndx >= dir_flist->count) {
ndx = NDX_FLIST_OFFSET - ndx;
rprintf(FERROR,
"[%s] Invalid dir index: %d (%d - %d)\n",
who_am_i(), ndx, NDX_FLIST_OFFSET,
NDX_FLIST_OFFSET - dir_flist->count + 1);
exit_cleanup(RERR_PROTOCOL);
}
if (verbose > 3) {
rprintf(FINFO, "[%s] receiving flist for dir %d\n",
who_am_i(), ndx);
}
flist = recv_file_list(f);
flist->parent_ndx = ndx;
}
}
/* 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 = flist->low, high = flist->high;
int diff, mid, mid_up;
while (low <= high) {
mid = (low + high) / 2;
if (F_IS_ACTIVE(flist->sorted[mid]))
mid_up = mid;
else {
/* Scan for the next non-empty entry using the cached
* distance values. If the value isn't fully up-to-
* date, update it. */
mid_up = mid + F_DEPTH(flist->sorted[mid]);
if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
do {
mid_up += F_DEPTH(flist->sorted[mid_up]);
} while (!F_IS_ACTIVE(flist->sorted[mid_up]));
F_DEPTH(flist->sorted[mid]) = mid_up - mid;
}
if (mid_up > high) {
/* If there's nothing left above us, set high to
* a non-empty entry below us and continue. */
high = mid - (int)flist->sorted[mid]->len32;
if (!F_IS_ACTIVE(flist->sorted[high])) {
do {
high -= (int)flist->sorted[high]->len32;
} while (!F_IS_ACTIVE(flist->sorted[high]));
flist->sorted[mid]->len32 = mid - high;
}
continue;
}
}
diff = f_name_cmp(flist->sorted[mid_up], f);
if (diff == 0) {
if (protocol_version < 29
&& S_ISDIR(flist->sorted[mid_up]->mode)
!= S_ISDIR(f->mode))
return -1;
return mid_up;
}
if (diff < 0)
low = mid_up + 1;
else
high = mid - 1;
}
return -1;
}
/*
* Free up any resources a file_struct has allocated
* and clear the file.
*/
void clear_file(struct file_struct *file)
{
/* The +1 zeros out the first char of the basename. */
memset(file, 0, FILE_STRUCT_LEN + 1);
/* In an empty entry, F_DEPTH() is an offset to the next non-empty
* entry. Likewise for len32 in the opposite direction. We assume
* that we're alone for now since flist_find() will adjust the counts
* it runs into that aren't up-to-date. */
file->len32 = F_DEPTH(file) = 1;
}
/* Allocate a new file list. */
struct file_list *flist_new(int flags, char *msg)
{
struct file_list *flist;
flist = new(struct file_list);
if (!flist)
out_of_memory(msg);
memset(flist, 0, sizeof flist[0]);
if (!(flags & FLIST_TEMP)) {
if (first_flist) {
flist->ndx_start = first_flist->prev->ndx_start
+ first_flist->prev->count;
}
/* This is a doubly linked list with prev looping back to
* the end of the list, but the last next pointer is NULL. */
if (!first_flist)
first_flist = cur_flist = flist->prev = flist;
else {
flist->prev = first_flist->prev;
flist->prev->next = first_flist->prev = flist;
}
flist_cnt++;
}
if (!(flist->file_pool = pool_create(FILE_EXTENT, 0, out_of_memory, POOL_INTERN)))
out_of_memory(msg);
return flist;
}
/* Free up all elements in a flist. */
void flist_free(struct file_list *flist)
{
if (!flist->prev)
; /* Was FLIST_TEMP dir-list. */
else if (flist == flist->prev) {
first_flist = cur_flist = NULL;
file_total = 0;
flist_cnt = 0;
} else {
if (flist == cur_flist)
cur_flist = flist->next;
if (flist == first_flist)
first_flist = first_flist->next;
else {
flist->prev->next = flist->next;
if (!flist->next)
flist->next = first_flist;
}
flist->next->prev = flist->prev;
file_total -= flist->count;
flist_cnt--;
}
pool_destroy(flist->file_pool);
if (flist->sorted && flist->sorted != flist->files)
free(flist->sorted);
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. */
static void clean_flist(struct file_list *flist, int strip_root)
{
char fbuf[MAXPATHLEN];
int i, prev_i;
if (!flist)
return;
if (flist->count == 0) {
flist->high = -1;
return;
}
fsort(flist->sorted, flist->count);
if (!am_sender || inc_recurse) {
for (i = prev_i = 0; i < flist->count; i++) {
if (F_IS_ACTIVE(flist->sorted[i])) {
prev_i = i;
break;
}
}
flist->low = prev_i;
} else {
i = prev_i = flist->count - 1;
flist->low = 0;
}
while (++i < flist->count) {
int j;
struct file_struct *file = flist->sorted[i];
if (!F_IS_ACTIVE(file))
continue;
if (f_name_cmp(file, flist->sorted[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) {
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)) {
struct file_struct *fp = flist->sorted[j];
if (!S_ISDIR(fp->mode))
keep = i, drop = j;
else
keep = j, drop = i;
} else
keep = j, drop = i;
if (am_sender)
flist->sorted[drop]->flags |= FLAG_DUPLICATE;
else {
if (verbose > 1) {
rprintf(FINFO,
"removing duplicate name %s from file list (%d)\n",
f_name(file, fbuf), drop + flist->ndx_start);
}
/* Make sure we don't lose track of a user-specified
* top directory. */
flist->sorted[keep]->flags |= flist->sorted[drop]->flags
& (FLAG_TOP_DIR|FLAG_XFER_DIR);
clear_file(flist->sorted[drop]);
}
if (keep == i) {
if (flist->low == drop) {
for (j = drop + 1;
j < i && !F_IS_ACTIVE(flist->sorted[j]);
j++) {}
flist->low = j;
}
prev_i = i;
}
} else
prev_i = i;
}
flist->high = prev_i;
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->sorted[i];
if (!file->dirname)
continue;
while (*file->dirname == '/')
file->dirname++;
if (!*file->dirname)
file->dirname = NULL;
}
}
if (prune_empty_dirs && !am_sender) {
int j, prev_depth = 0;
prev_i = 0; /* It's OK that this isn't really true. */
for (i = flist->low; i <= flist->high; i++) {
struct file_struct *fp, *file = flist->sorted[i];
/* This temporarily abuses the F_DEPTH() value for a
* directory that is in a chain that might get pruned.
* We restore the old value if it gets a reprieve. */
if (S_ISDIR(file->mode) && F_DEPTH(file)) {
/* Dump empty dirs when coming back down. */
for (j = prev_depth; j >= F_DEPTH(file); j--) {
fp = flist->sorted[prev_i];
if (F_DEPTH(fp) >= 0)
break;
prev_i = -F_DEPTH(fp)-1;
clear_file(fp);
}
prev_depth = F_DEPTH(file);
if (is_excluded(f_name(file, fbuf), 1,
ALL_FILTERS)) {
/* Keep dirs through this dir. */
for (j = prev_depth-1; ; j--) {
fp = flist->sorted[prev_i];
if (F_DEPTH(fp) >= 0)
break;
prev_i = -F_DEPTH(fp)-1;
F_DEPTH(fp) = j;
}
} else
F_DEPTH(file) = -prev_i-1;
prev_i = i;
} else {
/* Keep dirs through this non-dir. */
for (j = prev_depth; ; j--) {
fp = flist->sorted[prev_i];
if (F_DEPTH(fp) >= 0)
break;
prev_i = -F_DEPTH(fp)-1;
F_DEPTH(fp) = j;
}
}
}
/* Dump all remaining empty dirs. */
while (1) {
struct file_struct *fp = flist->sorted[prev_i];
if (F_DEPTH(fp) >= 0)
break;
prev_i = -F_DEPTH(fp)-1;
clear_file(fp);
}
for (i = flist->low; i <= flist->high; i++) {
if (F_IS_ACTIVE(flist->sorted[i]))
break;
}
flist->low = i;
for (i = flist->high; i >= flist->low; i--) {
if (F_IS_ACTIVE(flist->sorted[i]))
break;
}
flist->high = i;
}
}
static void output_flist(struct file_list *flist)
{
char uidbuf[16], gidbuf[16], depthbuf[16];
struct file_struct *file;
const char *root, *dir, *slash, *name, *trail;
const char *who = who_am_i();
int i;
rprintf(FINFO, "[%s] flist start=%d, count=%d, low=%d, high=%d\n",
who, flist->ndx_start, flist->count, flist->low, flist->high);
for (i = 0; i < flist->count; i++) {
file = flist->sorted[i];
if ((am_root || am_sender) && preserve_uid) {
snprintf(uidbuf, sizeof uidbuf, " uid=%u",
F_OWNER(file));
} else
*uidbuf = '\0';
if (preserve_gid) {
static char parens[] = "(\0)\0\0\0";
char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
pp, F_GROUP(file), pp + 2);
} else
*gidbuf = '\0';
if (!am_sender)
snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
if (F_IS_ACTIVE(file)) {
root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
if ((dir = file->dirname) == NULL)
dir = slash = "";
else
slash = "/";
name = file->basename;
trail = S_ISDIR(file->mode) ? "/" : "";
} else
root = dir = slash = name = trail = "";
rprintf(FINFO,
"[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
who, i + flist->ndx_start,
root, dir, slash, name, trail,
(int)file->mode, (double)F_LENGTH(file),
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 || !F_IS_ACTIVE(f1)) {
if (!f2 || !F_IS_ACTIVE(f2))
return 0;
return -1;
}
if (!f2 || !F_IS_ACTIVE(f2))
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 = (const uchar*)f1->basename;
if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
type1 = t_ITEM;
state1 = s_TRAILING;
c1 = (uchar*)"";
} else
state1 = s_BASE;
} else {
type1 = t_path;
state1 = s_DIR;
}
if (!c2) {
type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
c2 = (const uchar*)f2->basename;
if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
type2 = t_ITEM;
state2 = s_TRAILING;
c2 = (uchar*)"";
} else
state2 = s_BASE;
} else {
type2 = t_path;
state2 = s_DIR;
}
if (type1 != type2)
return type1 == t_PATH ? 1 : -1;
do {
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 = (const 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 = (const 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;
}
} while ((dif = (int)*c1++ - (int)*c2++) == 0);
return dif;
}
char *f_name_buf(void)
{
static char names[5][MAXPATHLEN];
static unsigned int n;
n = (n + 1) % (sizeof names / sizeof names[0]);
return names[n];
}
/* Return a copy of the full filename of a flist entry, using the indicated
* buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
* done because we checked the size when creating the file_struct entry.
*/
char *f_name(struct file_struct *f, char *fbuf)
{
if (!f || !F_IS_ACTIVE(f))
return NULL;
if (!fbuf)
fbuf = f_name_buf();
if (f->dirname) {
int len = strlen(f->dirname);
memcpy(fbuf, f->dirname, len);
fbuf[len] = '/';
strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
} else
strlcpy(fbuf, f->basename, MAXPATHLEN);
return fbuf;
}
/* 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;
int save_xfer_dirs = xfer_dirs;
if (dlen < 0) {
dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
if (dlen >= MAXPATHLEN)
return NULL;
dirname = dirbuf;
}
dirlist = flist_new(FLIST_TEMP, "get_dirlist");
recurse = 0;
xfer_dirs = 1;
send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
xfer_dirs = save_xfer_dirs;
recurse = save_recurse;
if (do_progress)
flist_count_offset += dirlist->count;
dirlist->sorted = dirlist->files;
clean_flist(dirlist, 0);
if (verbose > 3)
output_flist(dirlist);
return dirlist;
}
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