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Added a new function: check_perms().
[rsync/rsync.git]
/
io.c
diff --git
a/io.c
b/io.c
index
439f717
..
6dafa2a
100644
(file)
--- a/
io.c
+++ b/
io.c
@@
-119,14
+119,17
@@
struct flist_ndx_list {
static struct flist_ndx_list redo_list, hlink_list;
static struct flist_ndx_list redo_list, hlink_list;
-struct msg_list {
- struct msg_list *next;
+struct msg_list
_item
{
+ struct msg_list
_item
*next;
char *buf;
int len;
};
char *buf;
int len;
};
-static struct msg_list *msg_list_head;
-static struct msg_list *msg_list_tail;
+struct msg_list {
+ struct msg_list_item *head, *tail;
+};
+
+static struct msg_list msg_list;
static void flist_ndx_push(struct flist_ndx_list *lp, int ndx)
{
static void flist_ndx_push(struct flist_ndx_list *lp, int ndx)
{
@@
-224,9
+227,9
@@
void set_msg_fd_out(int fd)
/* Add a message to the pending MSG_* list. */
static void msg_list_add(int code, char *buf, int len)
{
/* Add a message to the pending MSG_* list. */
static void msg_list_add(int code, char *buf, int len)
{
- struct msg_list *ml;
+ struct msg_list
_item
*ml;
- if (!(ml = new(struct msg_list)))
+ if (!(ml = new(struct msg_list
_item
)))
out_of_memory("msg_list_add");
ml->next = NULL;
if (!(ml->buf = new_array(char, len+4)))
out_of_memory("msg_list_add");
ml->next = NULL;
if (!(ml->buf = new_array(char, len+4)))
@@
-234,21
+237,11
@@
static void msg_list_add(int code, char *buf, int len)
SIVAL(ml->buf, 0, ((code+MPLEX_BASE)<<24) | len);
memcpy(ml->buf+4, buf, len);
ml->len = len+4;
SIVAL(ml->buf, 0, ((code+MPLEX_BASE)<<24) | len);
memcpy(ml->buf+4, buf, len);
ml->len = len+4;
- if (msg_list
_
tail)
- msg_list
_
tail->next = ml;
+ if (msg_list
.
tail)
+ msg_list
.
tail->next = ml;
else
else
- msg_list_head = ml;
- msg_list_tail = ml;
-}
-
-void send_msg(enum msgcode code, char *buf, int len)
-{
- if (msg_fd_out < 0) {
- io_multiplex_write(code, buf, len);
- return;
- }
- msg_list_add(code, buf, len);
- msg_list_push(NORMAL_FLUSH);
+ msg_list.head = ml;
+ msg_list.tail = ml;
}
/* Read a message from the MSG_* fd and handle it. This is called either
}
/* Read a message from the MSG_* fd and handle it. This is called either
@@
-307,6
+300,13
@@
static void read_msg_fd(void)
if (preserve_hard_links)
flist_ndx_push(&hlink_list, IVAL(buf,0));
break;
if (preserve_hard_links)
flist_ndx_push(&hlink_list, IVAL(buf,0));
break;
+ case MSG_SOCKERR:
+ if (!am_generator) {
+ rprintf(FERROR, "invalid message %d:%d\n", tag, len);
+ exit_cleanup(RERR_STREAMIO);
+ }
+ close_multiplexing_out();
+ /* FALL THROUGH */
case MSG_INFO:
case MSG_ERROR:
case MSG_LOG:
case MSG_INFO:
case MSG_ERROR:
case MSG_LOG:
@@
-330,7
+330,7
@@
static void read_msg_fd(void)
/* Try to push messages off the list onto the wire. If we leave with more
* to do, return 0. On error, return -1. If everything flushed, return 1.
* This is only active in the receiver. */
/* Try to push messages off the list onto the wire. If we leave with more
* to do, return 0. On error, return -1. If everything flushed, return 1.
* This is only active in the receiver. */
-
int msg_list_p
ush(int flush_it_all)
+
static int msg_list_fl
ush(int flush_it_all)
{
static int written = 0;
struct timeval tv;
{
static int written = 0;
struct timeval tv;
@@
-339,8
+339,8
@@
int msg_list_push(int flush_it_all)
if (msg_fd_out < 0)
return -1;
if (msg_fd_out < 0)
return -1;
- while (msg_list
_
head) {
- struct msg_list
*ml = msg_list_
head;
+ while (msg_list
.
head) {
+ struct msg_list
_item *ml = msg_list.
head;
int n = write(msg_fd_out, ml->buf + written, ml->len - written);
if (n < 0) {
if (errno == EINTR)
int n = write(msg_fd_out, ml->buf + written, ml->len - written);
if (n < 0) {
if (errno == EINTR)
@@
-357,9
+357,9
@@
int msg_list_push(int flush_it_all)
check_timeout();
} else if ((written += n) == ml->len) {
free(ml->buf);
check_timeout();
} else if ((written += n) == ml->len) {
free(ml->buf);
- msg_list
_
head = ml->next;
- if (!msg_list
_
head)
- msg_list
_
tail = NULL;
+ msg_list
.
head = ml->next;
+ if (!msg_list
.
head)
+ msg_list
.
tail = NULL;
free(ml);
written = 0;
}
free(ml);
written = 0;
}
@@
-367,6
+367,16
@@
int msg_list_push(int flush_it_all)
return 1;
}
return 1;
}
+void send_msg(enum msgcode code, char *buf, int len)
+{
+ if (msg_fd_out < 0) {
+ io_multiplex_write(code, buf, len);
+ return;
+ }
+ msg_list_add(code, buf, len);
+ msg_list_flush(NORMAL_FLUSH);
+}
+
int get_redo_num(int itemizing, enum logcode code)
{
while (1) {
int get_redo_num(int itemizing, enum logcode code)
{
while (1) {
@@
-434,7
+444,6
@@
static void whine_about_eof(int fd)
exit_cleanup(RERR_STREAMIO);
}
exit_cleanup(RERR_STREAMIO);
}
-
/**
* Read from a socket with I/O timeout. return the number of bytes
* read. If no bytes can be read then exit, never return a number <= 0.
/**
* Read from a socket with I/O timeout. return the number of bytes
* read. If no bytes can be read then exit, never return a number <= 0.
@@
-448,11
+457,11
@@
static void whine_about_eof(int fd)
*/
static int read_timeout(int fd, char *buf, size_t len)
{
*/
static int read_timeout(int fd, char *buf, size_t len)
{
- int n,
re
t = 0;
+ int n,
cn
t = 0;
io_flush(NORMAL_FLUSH);
io_flush(NORMAL_FLUSH);
- while (
re
t == 0) {
+ while (
cn
t == 0) {
/* until we manage to read *something* */
fd_set r_fds, w_fds;
struct timeval tv;
/* until we manage to read *something* */
fd_set r_fds, w_fds;
struct timeval tv;
@@
-462,7
+471,7
@@
static int read_timeout(int fd, char *buf, size_t len)
FD_ZERO(&r_fds);
FD_ZERO(&w_fds);
FD_SET(fd, &r_fds);
FD_ZERO(&r_fds);
FD_ZERO(&w_fds);
FD_SET(fd, &r_fds);
- if (msg_list
_
head) {
+ if (msg_list
.
head) {
FD_SET(msg_fd_out, &w_fds);
if (msg_fd_out > maxfd)
maxfd = msg_fd_out;
FD_SET(msg_fd_out, &w_fds);
if (msg_fd_out > maxfd)
maxfd = msg_fd_out;
@@
-499,8
+508,8
@@
static int read_timeout(int fd, char *buf, size_t len)
continue;
}
continue;
}
- if (msg_list
_
head && FD_ISSET(msg_fd_out, &w_fds))
- msg_list_
p
ush(NORMAL_FLUSH);
+ if (msg_list
.
head && FD_ISSET(msg_fd_out, &w_fds))
+ msg_list_
fl
ush(NORMAL_FLUSH);
if (io_filesfrom_f_out >= 0) {
if (io_filesfrom_buflen) {
if (io_filesfrom_f_out >= 0) {
if (io_filesfrom_buflen) {
@@
-578,21
+587,23
@@
static int read_timeout(int fd, char *buf, size_t len)
continue;
/* Don't write errors on a dead socket. */
continue;
/* Don't write errors on a dead socket. */
- if (fd == sock_f_in)
+ if (fd == sock_f_in)
{
close_multiplexing_out();
close_multiplexing_out();
- rsyserr(FERROR, errno, "read error");
+ rsyserr(FSOCKERR, errno, "read error");
+ } else
+ rsyserr(FERROR, errno, "read error");
exit_cleanup(RERR_STREAMIO);
}
buf += n;
len -= n;
exit_cleanup(RERR_STREAMIO);
}
buf += n;
len -= n;
-
re
t += n;
+
cn
t += n;
if (fd == sock_f_in && io_timeout)
last_io_in = time(NULL);
}
if (fd == sock_f_in && io_timeout)
last_io_in = time(NULL);
}
- return
re
t;
+ return
cn
t;
}
/**
}
/**
@@
-642,7
+653,6
@@
int read_filesfrom_line(int fd, char *fname)
return s - fname;
}
return s - fname;
}
-
static char *iobuf_out;
static int iobuf_out_cnt;
static char *iobuf_out;
static int iobuf_out_cnt;
@@
-655,7
+665,6
@@
void io_start_buffering_out(void)
iobuf_out_cnt = 0;
}
iobuf_out_cnt = 0;
}
-
static char *iobuf_in;
static size_t iobuf_in_siz;
static char *iobuf_in;
static size_t iobuf_in_siz;
@@
-668,7
+677,6
@@
void io_start_buffering_in(void)
out_of_memory("io_start_buffering_in");
}
out_of_memory("io_start_buffering_in");
}
-
void io_end_buffering(void)
{
io_flush(NORMAL_FLUSH);
void io_end_buffering(void)
{
io_flush(NORMAL_FLUSH);
@@
-678,14
+686,12
@@
void io_end_buffering(void)
}
}
}
}
-
void maybe_flush_socket(void)
{
if (iobuf_out && iobuf_out_cnt && time(NULL) - last_io_out >= 5)
io_flush(NORMAL_FLUSH);
}
void maybe_flush_socket(void)
{
if (iobuf_out && iobuf_out_cnt && time(NULL) - last_io_out >= 5)
io_flush(NORMAL_FLUSH);
}
-
void maybe_send_keepalive(void)
{
if (time(NULL) - last_io_out >= allowed_lull) {
void maybe_send_keepalive(void)
{
if (time(NULL) - last_io_out >= allowed_lull) {
@@
-700,7
+706,6
@@
void maybe_send_keepalive(void)
}
}
}
}
-
/**
* Continue trying to read len bytes - don't return until len has been
* read.
/**
* Continue trying to read len bytes - don't return until len has been
* read.
@@
-715,7
+720,6
@@
static void read_loop(int fd, char *buf, size_t len)
}
}
}
}
-
/**
* Read from the file descriptor handling multiplexing - return number
* of bytes read.
/**
* Read from the file descriptor handling multiplexing - return number
* of bytes read.
@@
-727,7
+731,7
@@
static int readfd_unbuffered(int fd, char *buf, size_t len)
static size_t remaining;
static size_t iobuf_in_ndx;
size_t msg_bytes;
static size_t remaining;
static size_t iobuf_in_ndx;
size_t msg_bytes;
- int tag,
re
t = 0;
+ int tag,
cn
t = 0;
char line[BIGPATHBUFLEN];
if (!iobuf_in || fd != sock_f_in)
char line[BIGPATHBUFLEN];
if (!iobuf_in || fd != sock_f_in)
@@
-738,13
+742,13
@@
static int readfd_unbuffered(int fd, char *buf, size_t len)
iobuf_in_ndx = 0;
}
iobuf_in_ndx = 0;
}
- while (
re
t == 0) {
+ while (
cn
t == 0) {
if (remaining) {
len = MIN(len, remaining);
memcpy(buf, iobuf_in + iobuf_in_ndx, len);
iobuf_in_ndx += len;
remaining -= len;
if (remaining) {
len = MIN(len, remaining);
memcpy(buf, iobuf_in + iobuf_in_ndx, len);
iobuf_in_ndx += len;
remaining -= len;
-
re
t = len;
+
cn
t = len;
break;
}
break;
}
@@
-808,11
+812,9
@@
static int readfd_unbuffered(int fd, char *buf, size_t len)
if (remaining == 0)
io_flush(NORMAL_FLUSH);
if (remaining == 0)
io_flush(NORMAL_FLUSH);
- return
re
t;
+ return
cn
t;
}
}
-
-
/**
* Do a buffered read from @p fd. Don't return until all @p n bytes
* have been read. If all @p n can't be read then exit with an
/**
* Do a buffered read from @p fd. Don't return until all @p n bytes
* have been read. If all @p n can't be read then exit with an
@@
-820,12
+822,12
@@
static int readfd_unbuffered(int fd, char *buf, size_t len)
**/
static void readfd(int fd, char *buffer, size_t N)
{
**/
static void readfd(int fd, char *buffer, size_t N)
{
- int
re
t;
+ int
cn
t;
size_t total = 0;
while (total < N) {
size_t total = 0;
while (total < N) {
-
re
t = readfd_unbuffered(fd, buffer + total, N-total);
- total +=
re
t;
+
cn
t = readfd_unbuffered(fd, buffer + total, N-total);
+ total +=
cn
t;
}
if (fd == write_batch_monitor_in) {
}
if (fd == write_batch_monitor_in) {
@@
-837,7
+839,6
@@
static void readfd(int fd, char *buffer, size_t N)
stats.total_read += total;
}
stats.total_read += total;
}
-
int read_shortint(int f)
{
uchar b[2];
int read_shortint(int f)
{
uchar b[2];
@@
-845,37
+846,36
@@
int read_shortint(int f)
return (b[1] << 8) + b[0];
}
return (b[1] << 8) + b[0];
}
-
int32 read_int(int f)
{
char b[4];
int32 read_int(int f)
{
char b[4];
- int32
ret
;
+ int32
num
;
readfd(f,b,4);
readfd(f,b,4);
-
ret
= IVAL(b,0);
- if (
ret
== (int32)0xffffffff)
+
num
= IVAL(b,0);
+ if (
num
== (int32)0xffffffff)
return -1;
return -1;
- return
ret
;
+ return
num
;
}
int64 read_longint(int f)
{
}
int64 read_longint(int f)
{
- int64
ret
;
+ int64
num
;
char b[8];
char b[8];
-
ret
= read_int(f);
+
num
= read_int(f);
- if ((int32)
ret
!= (int32)0xffffffff)
- return
ret
;
+ if ((int32)
num
!= (int32)0xffffffff)
+ return
num
;
#if SIZEOF_INT64 < 8
rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
exit_cleanup(RERR_UNSUPPORTED);
#else
readfd(f,b,8);
#if SIZEOF_INT64 < 8
rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
exit_cleanup(RERR_UNSUPPORTED);
#else
readfd(f,b,8);
-
ret
= IVAL(b,0) | (((int64)IVAL(b,4))<<32);
+
num
= IVAL(b,0) | (((int64)IVAL(b,4))<<32);
#endif
#endif
- return
ret
;
+ return
num
;
}
void read_buf(int f,char *buf,size_t len)
}
void read_buf(int f,char *buf,size_t len)
@@
-957,7
+957,6
@@
void write_sum_head(int f, struct sum_struct *sum)
write_int(f, sum->remainder);
}
write_int(f, sum->remainder);
}
-
/**
* Sleep after writing to limit I/O bandwidth usage.
*
/**
* Sleep after writing to limit I/O bandwidth usage.
*
@@
-1013,7
+1012,6
@@
static void sleep_for_bwlimit(int bytes_written)
total_written = (sleep_usec - elapsed_usec) * bwlimit / (ONE_SEC/1024);
}
total_written = (sleep_usec - elapsed_usec) * bwlimit / (ONE_SEC/1024);
}
-
/* Write len bytes to the file descriptor fd, looping as necessary to get
* the job done and also (in certain circumstances) reading any data on
* msg_fd_in to avoid deadlock.
/* Write len bytes to the file descriptor fd, looping as necessary to get
* the job done and also (in certain circumstances) reading any data on
* msg_fd_in to avoid deadlock.
@@
-1024,7
+1022,7
@@
static void writefd_unbuffered(int fd,char *buf,size_t len)
{
size_t n, total = 0;
fd_set w_fds, r_fds;
{
size_t n, total = 0;
fd_set w_fds, r_fds;
- int maxfd, count,
re
t, using_r_fds;
+ int maxfd, count,
cn
t, using_r_fds;
struct timeval tv;
no_flush++;
struct timeval tv;
no_flush++;
@@
-1066,10
+1064,10
@@
static void writefd_unbuffered(int fd,char *buf,size_t len)
n = len - total;
if (bwlimit && n > bwlimit_writemax)
n = bwlimit_writemax;
n = len - total;
if (bwlimit && n > bwlimit_writemax)
n = bwlimit_writemax;
-
re
t = write(fd, buf + total, n);
+
cn
t = write(fd, buf + total, n);
- if (
re
t <= 0) {
- if (
re
t < 0) {
+ if (
cn
t <= 0) {
+ if (
cn
t < 0) {
if (errno == EINTR)
continue;
if (errno == EWOULDBLOCK || errno == EAGAIN) {
if (errno == EINTR)
continue;
if (errno == EWOULDBLOCK || errno == EAGAIN) {
@@
-1095,19
+1093,18
@@
static void writefd_unbuffered(int fd,char *buf,size_t len)
exit_cleanup(RERR_STREAMIO);
}
exit_cleanup(RERR_STREAMIO);
}
- total +=
re
t;
+ total +=
cn
t;
if (fd == sock_f_out) {
if (io_timeout || am_generator)
last_io_out = time(NULL);
if (fd == sock_f_out) {
if (io_timeout || am_generator)
last_io_out = time(NULL);
- sleep_for_bwlimit(
re
t);
+ sleep_for_bwlimit(
cn
t);
}
}
no_flush--;
}
}
}
no_flush--;
}
-
/**
* Write an message to a multiplexed stream. If this fails then rsync
* exits.
/**
* Write an message to a multiplexed stream. If this fails then rsync
* exits.
@@
-1142,10
+1139,9
@@
static void mplex_write(enum msgcode code, char *buf, size_t len)
contiguous_write_len = 0;
}
contiguous_write_len = 0;
}
-
void io_flush(int flush_it_all)
{
void io_flush(int flush_it_all)
{
- msg_list_
p
ush(flush_it_all);
+ msg_list_
fl
ush(flush_it_all);
if (!iobuf_out_cnt || no_flush)
return;
if (!iobuf_out_cnt || no_flush)
return;
@@
-1157,7
+1153,6
@@
void io_flush(int flush_it_all)
iobuf_out_cnt = 0;
}
iobuf_out_cnt = 0;
}
-
static void writefd(int fd,char *buf,size_t len)
{
if (fd == msg_fd_out) {
static void writefd(int fd,char *buf,size_t len)
{
if (fd == msg_fd_out) {
@@
-1192,7
+1187,6
@@
static void writefd(int fd,char *buf,size_t len)
}
}
}
}
-
void write_shortint(int f, int x)
{
uchar b[2];
void write_shortint(int f, int x)
{
uchar b[2];
@@
-1201,7
+1195,6
@@
void write_shortint(int f, int x)
writefd(f, (char *)b, 2);
}
writefd(f, (char *)b, 2);
}
-
void write_int(int f,int32 x)
{
char b[4];
void write_int(int f,int32 x)
{
char b[4];
@@
-1209,7
+1202,6
@@
void write_int(int f,int32 x)
writefd(f,b,4);
}
writefd(f,b,4);
}
-
void write_int_named(int f, int32 x, const char *phase)
{
io_write_phase = phase;
void write_int_named(int f, int32 x, const char *phase)
{
io_write_phase = phase;
@@
-1217,7
+1209,6
@@
void write_int_named(int f, int32 x, const char *phase)
io_write_phase = phase_unknown;
}
io_write_phase = phase_unknown;
}
-
/*
* Note: int64 may actually be a 32-bit type if ./configure couldn't find any
* 64-bit types on this platform.
/*
* Note: int64 may actually be a 32-bit type if ./configure couldn't find any
* 64-bit types on this platform.
@@
-1279,7
+1270,6
@@
void write_vstring(int f, char *str, int len)
writefd(f, str, len);
}
writefd(f, str, len);
}
-
/**
* Read a line of up to @p maxlen characters into @p buf (not counting
* the trailing null). Strips the (required) trailing newline and all
/**
* Read a line of up to @p maxlen characters into @p buf (not counting
* the trailing null). Strips the (required) trailing newline and all
@@
-1305,7
+1295,6
@@
int read_line(int f, char *buf, size_t maxlen)
return maxlen > 0;
}
return maxlen > 0;
}
-
void io_printf(int fd, const char *format, ...)
{
va_list ap;
void io_printf(int fd, const char *format, ...)
{
va_list ap;
@@
-1327,7
+1316,6
@@
void io_printf(int fd, const char *format, ...)
write_sbuf(fd, buf);
}
write_sbuf(fd, buf);
}
-
/** Setup for multiplexing a MSG_* stream with the data stream. */
void io_start_multiplex_out(void)
{
/** Setup for multiplexing a MSG_* stream with the data stream. */
void io_start_multiplex_out(void)
{