* Copyright (C) 1996-2001 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003-2009 Wayne Davison
+ * Copyright (C) 2003-2014 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
extern int remove_source_files;
extern int preserve_hard_links;
extern BOOL extra_flist_sending_enabled;
+extern BOOL flush_ok_after_signal;
extern struct stats stats;
extern struct file_list *cur_flist;
#ifdef ICONV_OPTION
/* Ignore an EOF error if non-zero. See whine_about_eof(). */
int kluge_around_eof = 0;
+int got_kill_signal = -1; /* is set to 0 only after multiplexed I/O starts */
int sock_f_in = -1;
int sock_f_out = -1;
static void drain_multiplex_messages(void);
static void sleep_for_bwlimit(int bytes_written);
-static void check_timeout(BOOL allow_keepalive)
+static void check_timeout(BOOL allow_keepalive, int keepalive_flags)
{
time_t t, chk;
if (allow_keepalive) {
/* This may put data into iobuf.msg w/o flushing. */
- maybe_send_keepalive(t, 0);
+ maybe_send_keepalive(t, keepalive_flags);
}
if (!last_io_in)
* the socket except very early in the transfer. */
static size_t safe_read(int fd, char *buf, size_t len)
{
- size_t got;
- int n;
+ size_t got = 0;
assert(fd != iobuf.in_fd);
- n = read(fd, buf, len);
- if ((size_t)n == len || n == 0) {
- if (DEBUG_GTE(IO, 2))
- rprintf(FINFO, "[%s] safe_read(%d)=%ld\n", who_am_i(), fd, (long)n);
- return n;
- }
- if (n < 0) {
- if (errno != EINTR && errno != EWOULDBLOCK && errno != EAGAIN) {
- read_failed:
- rsyserr(FERROR, errno, "safe_read failed to read %ld bytes [%s]",
- (long)len, who_am_i());
- exit_cleanup(RERR_STREAMIO);
- }
- got = 0;
- } else
- got = n;
-
while (1) {
struct timeval tv;
fd_set r_fds, e_fds;
who_am_i());
exit_cleanup(RERR_FILEIO);
}
- if (io_timeout)
- maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
+ check_timeout(1, MSK_ALLOW_FLUSH);
continue;
}
rprintf(FINFO, "select exception on fd %d\n", fd); */
if (FD_ISSET(fd, &r_fds)) {
- n = read(fd, buf + got, len - got);
+ int n = read(fd, buf + got, len - got);
if (DEBUG_GTE(IO, 2))
rprintf(FINFO, "[%s] safe_read(%d)=%ld\n", who_am_i(), fd, (long)n);
if (n == 0)
if (n < 0) {
if (errno == EINTR)
continue;
- goto read_failed;
+ rsyserr(FERROR, errno, "safe_read failed to read %ld bytes [%s]",
+ (long)len, who_am_i());
+ exit_cleanup(RERR_STREAMIO);
}
if ((got += (size_t)n) == len)
break;
void reduce_iobuf_size(xbuf *out, size_t new_size)
{
if (new_size < out->size) {
- if (DEBUG_GTE(IO, 4)) {
+ /* Avoid weird buffer interactions by only outputting this to stderr. */
+ if (msgs2stderr && DEBUG_GTE(IO, 4)) {
const char *name = out == &iobuf.out ? "iobuf.out"
: out == &iobuf.msg ? "iobuf.msg"
: NULL;
{
if (IOBUF_WAS_REDUCED(out->size)) {
size_t new_size = IOBUF_RESTORE_SIZE(out->size);
- if (DEBUG_GTE(IO, 4)) {
+ /* Avoid weird buffer interactions by only outputting this to stderr. */
+ if (msgs2stderr && DEBUG_GTE(IO, 4)) {
const char *name = out == &iobuf.out ? "iobuf.out"
: out == &iobuf.msg ? "iobuf.msg"
: NULL;
}
}
+static void handle_kill_signal(BOOL flush_ok)
+{
+ got_kill_signal = -1;
+ flush_ok_after_signal = flush_ok;
+ exit_cleanup(RERR_SIGNAL);
+}
+
/* Perform buffered input and/or output until specified conditions are met.
* When given a "needed" read or write request, this returns without doing any
* I/O if the needed input bytes or write space is already available. Once I/O
exit_cleanup(RERR_PROTOCOL);
}
- if (DEBUG_GTE(IO, 3)) {
+ if (msgs2stderr && DEBUG_GTE(IO, 3)) {
rprintf(FINFO, "[%s] perform_io(%ld, %sinput)\n",
who_am_i(), (long)needed, flags & PIO_CONSUME_INPUT ? "consume&" : "");
}
exit_cleanup(RERR_PROTOCOL);
}
- if (DEBUG_GTE(IO, 3)) {
+ if (msgs2stderr && DEBUG_GTE(IO, 3)) {
rprintf(FINFO, "[%s] perform_io(%ld, outroom) needs to flush %ld\n",
who_am_i(), (long)needed,
iobuf.out.len + needed > iobuf.out.size
exit_cleanup(RERR_PROTOCOL);
}
- if (DEBUG_GTE(IO, 3)) {
+ if (msgs2stderr && DEBUG_GTE(IO, 3)) {
rprintf(FINFO, "[%s] perform_io(%ld, msgroom) needs to flush %ld\n",
who_am_i(), (long)needed,
iobuf.msg.len + needed > iobuf.msg.size
break;
case 0:
- if (DEBUG_GTE(IO, 3))
+ if (msgs2stderr && DEBUG_GTE(IO, 3))
rprintf(FINFO, "[%s] perform_io(%ld, %d)\n", who_am_i(), (long)needed, flags);
break;
SIVAL(iobuf.out.buf + iobuf.raw_data_header_pos, 0,
((MPLEX_BASE + (int)MSG_DATA)<<24) + iobuf.out.len - 4);
- if (DEBUG_GTE(IO, 1)) {
+ if (msgs2stderr && DEBUG_GTE(IO, 1)) {
rprintf(FINFO, "[%s] send_msg(%d, %ld)\n",
who_am_i(), (int)MSG_DATA, (long)iobuf.out.len - 4);
}
break;
}
+ if (got_kill_signal > 0)
+ handle_kill_signal(True);
+
if (extra_flist_sending_enabled) {
- if (file_total - file_old_total < MAX_FILECNT_LOOKAHEAD)
+ if (file_total - file_old_total < MAX_FILECNT_LOOKAHEAD && IN_MULTIPLEXED_AND_READY)
tv.tv_sec = 0;
else {
extra_flist_sending_enabled = False;
send_extra_file_list(sock_f_out, -1);
extra_flist_sending_enabled = !flist_eof;
} else
- check_timeout((flags & PIO_NEED_INPUT) != 0);
+ check_timeout((flags & PIO_NEED_INPUT) != 0, 0);
FD_ZERO(&r_fds); /* Just in case... */
FD_ZERO(&w_fds);
}
}
}
+ if (got_kill_signal > 0)
+ handle_kill_signal(True);
+
/* We need to help prevent deadlock by doing what reading
* we can whenever we are here trying to write. */
if (IN_MULTIPLEXED_AND_READY && !(flags & PIO_NEED_INPUT)) {
}
double_break:
+ if (got_kill_signal > 0)
+ handle_kill_signal(True);
+
data = iobuf.in.buf + iobuf.in.pos;
if (flags & PIO_CONSUME_INPUT) {
if (status == FES_NO_SEND)
flist_ndx_push(&hlink_list, -2); /* indicates a failure follows */
flist_ndx_push(&hlink_list, ndx);
- flist->in_progress++;
+ if (inc_recurse)
+ flist->in_progress++;
}
}
#endif
char ***argv_p, int *argc_p, char **request_p)
{
int maxargs = MAX_ARGS;
- int dot_pos = 0;
- int argc = 0;
+ int dot_pos = 0, argc = 0, request_len = 0;
char **argv, *p;
int rl_flags = (rl_nulls ? RL_EOL_NULLS : 0);
if (mod_name && !protect_args)
argv[argc++] = "rsyncd";
+ if (request_p)
+ *request_p = NULL;
+
while (1) {
if (read_line(f_in, buf, bufsiz, rl_flags) == 0)
break;
}
if (dot_pos) {
- if (request_p) {
- *request_p = strdup(buf);
- request_p = NULL;
+ if (request_p && request_len < 1024) {
+ int len = strlen(buf);
+ if (request_len)
+ request_p[0][request_len++] = ' ';
+ if (!(*request_p = realloc_array(*request_p, char, request_len + len + 1)))
+ out_of_memory("read_args");
+ memcpy(*request_p + request_len, buf, len + 1);
+ request_len += len;
}
if (mod_name)
glob_expand_module(mod_name, buf, &argv, &argc, &maxargs);
if (flags & MSK_ACTIVE_RECEIVER)
last_io_in = now; /* Fudge things when we're working hard on the files. */
+ /* Early in the transfer (before the receiver forks) the receiving side doesn't
+ * care if it hasn't sent data in a while as long as it is receiving data (in
+ * fact, a pre-3.1.0 rsync would die if we tried to send it a keep alive during
+ * this time). So, if we're an early-receiving proc, just return and let the
+ * incoming data determine if we timeout. */
+ if (!am_sender && !am_receiver && !am_generator)
+ return;
+
if (now - last_io_out >= allowed_lull) {
/* The receiver is special: it only sends keep-alive messages if it is
* actively receiving data. Otherwise, it lets the generator timeout. */
exit_cleanup(RERR_STREAMIO);
}
raw_read_buf(data, msg_bytes);
- iobuf.in_multiplexed = 1;
+ /* We don't set in_multiplexed value back to 1 before writing this message
+ * because the write might loop back and read yet another message, over and
+ * over again, while waiting for room to put the message in the msg buffer. */
rwrite((enum logcode)tag, data, msg_bytes, !am_generator);
+ iobuf.in_multiplexed = 1;
if (first_message) {
if (list_only && !am_sender && tag == 1 && msg_bytes < sizeof data) {
data[msg_bytes] = '\0';
io_flush(FULL_FLUSH);
}
} else if (protocol_version >= 31) {
- if (am_generator) {
+ if (am_generator || am_receiver) {
if (DEBUG_GTE(EXIT, 3)) {
rprintf(FINFO, "[%s] sending MSG_ERROR_EXIT with exit_code %d\n",
who_am_i(), val);
#if SIZEOF_INT64 < 8
u.x = IVAL(u.b,0);
#elif CAREFUL_ALIGNMENT
- u.x = IVAL(u.b,0) | (((int64)IVAL(u.b,4))<<32);
+ u.x = IVAL64(u.b,0);
#endif
return u.x;
}
uchar bit;
int cnt = 8;
- SIVAL(b, 1, x);
#if SIZEOF_INT64 >= 8
- SIVAL(b, 5, x >> 32);
+ SIVAL64(b, 1, x);
#else
+ SIVAL(b, 1, x);
if (x <= 0x7FFFFFFF && x >= 0)
memset(b + 5, 0, 4);
else {
#endif
}
+void write_bigbuf(int f, const char *buf, size_t len)
+{
+ size_t half_max = (iobuf.out.size - iobuf.out_empty_len) / 2;
+
+ while (len > half_max + 1024) {
+ write_buf(f, buf, half_max);
+ buf += half_max;
+ len -= half_max;
+ }
+
+ write_buf(f, buf, len);
+}
+
void write_buf(int f, const char *buf, size_t len)
{
size_t pos, siz;
iobuf.out_empty_len = 4; /* See also OUT_MULTIPLEXED */
io_start_buffering_out(fd);
+ got_kill_signal = 0;
iobuf.raw_data_header_pos = iobuf.out.pos + iobuf.out.len;
iobuf.out.len += 4;
iobuf.out.len = 0;
iobuf.out_empty_len = 0;
+ if (got_kill_signal > 0) /* Just in case... */
+ handle_kill_signal(False);
+ got_kill_signal = -1;
return ret;
}
git.samba.org / rsync.git / blobdiff