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Run monitor over unix domain sockets, by Anthony Liguori.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2259 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2006-12-21 19:46:43 +00:00
parent 1cb6c3fd38
commit ffd843bcdc
3 changed files with 102 additions and 19 deletions
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5
qemu-doc.texi
View file

@ -586,6 +586,11 @@ MAGIC_SYSRQ sequence if you use a telnet that supports sending the break
sequence. Typically in unix telnet you do it with Control-] and then
type "send break" followed by pressing the enter key.
@item unix:path[,server][,nowait]
A unix domain socket is used instead of a tcp socket. The option works the
same as if you had specified @code{-serial tcp} except the unix domain socket
@var{path} is used for connections.
@end table
@item -parallel dev

1
qemu_socket.h
View file

@ -19,6 +19,7 @@
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/un.h>
#define socket_error() errno
#define closesocket(s) close(s)

115
vl.c
View file

@ -2206,6 +2206,7 @@ static void udp_chr_add_read_handler(CharDriverState *chr,
}
int parse_host_port(struct sockaddr_in *saddr, const char *str);
int parse_unix_path(struct sockaddr_un *uaddr, const char *str);
int parse_host_src_port(struct sockaddr_in *haddr,
struct sockaddr_in *saddr,
const char *str);
@ -2270,6 +2271,7 @@ typedef struct {
int connected;
int max_size;
int do_telnetopt;
int is_unix;
} TCPCharDriver;
static void tcp_chr_accept(void *opaque);
@ -2291,6 +2293,8 @@ static int tcp_chr_read_poll(void *opaque)
TCPCharDriver *s = chr->opaque;
if (!s->connected)
return 0;
if (!s->fd_can_read)
return 0;
s->max_size = s->fd_can_read(s->fd_opaque);
return s->max_size;
}
@ -2416,12 +2420,25 @@ static void tcp_chr_accept(void *opaque)
CharDriverState *chr = opaque;
TCPCharDriver *s = chr->opaque;
struct sockaddr_in saddr;
#ifndef _WIN32
struct sockaddr_un uaddr;
#endif
struct sockaddr *addr;
socklen_t len;
int fd;
for(;;) {
len = sizeof(saddr);
fd = accept(s->listen_fd, (struct sockaddr *)&saddr, &len);
#ifndef _WIN32
if (s->is_unix) {
len = sizeof(uaddr);
addr = (struct sockaddr *)&uaddr;
} else
#endif
{
len = sizeof(saddr);
addr = (struct sockaddr *)&saddr;
}
fd = accept(s->listen_fd, addr, &len);
if (fd < 0 && errno != EINTR) {
return;
} else if (fd >= 0) {
@ -2447,7 +2464,8 @@ static void tcp_chr_close(CharDriverState *chr)
}
static CharDriverState *qemu_chr_open_tcp(const char *host_str,
int is_telnet)
int is_telnet,
int is_unix)
{
CharDriverState *chr = NULL;
TCPCharDriver *s = NULL;
@ -2456,9 +2474,26 @@ static CharDriverState *qemu_chr_open_tcp(const char *host_str,
int is_waitconnect = 1;
const char *ptr;
struct sockaddr_in saddr;
#ifndef _WIN32
struct sockaddr_un uaddr;
#endif
struct sockaddr *addr;
socklen_t addrlen;
if (parse_host_port(&saddr, host_str) < 0)
goto fail;
#ifndef _WIN32
if (is_unix) {
addr = (struct sockaddr *)&uaddr;
addrlen = sizeof(uaddr);
if (parse_unix_path(&uaddr, host_str) < 0)
goto fail;
} else
#endif
{
addr = (struct sockaddr *)&saddr;
addrlen = sizeof(saddr);
if (parse_host_port(&saddr, host_str) < 0)
goto fail;
}
ptr = host_str;
while((ptr = strchr(ptr,','))) {
@ -2481,8 +2516,14 @@ static CharDriverState *qemu_chr_open_tcp(const char *host_str,
s = qemu_mallocz(sizeof(TCPCharDriver));
if (!s)
goto fail;
fd = socket(PF_INET, SOCK_STREAM, 0);
#ifndef _WIN32
if (is_unix)
fd = socket(PF_UNIX, SOCK_STREAM, 0);
else
#endif
fd = socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0)
goto fail;
@ -2492,24 +2533,43 @@ static CharDriverState *qemu_chr_open_tcp(const char *host_str,
s->connected = 0;
s->fd = -1;
s->listen_fd = -1;
s->is_unix = is_unix;
chr->opaque = s;
chr->chr_write = tcp_chr_write;
chr->chr_add_read_handler = tcp_chr_add_read_handler;
chr->chr_close = tcp_chr_close;
if (is_listen) {
/* allow fast reuse */
val = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
#ifndef _WIN32
if (is_unix) {
char path[109];
strncpy(path, uaddr.sun_path, 108);
path[108] = 0;
unlink(path);
} else
#endif
{
val = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
}
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
if (ret < 0)
ret = bind(fd, addr, addrlen);
if (ret < 0)
goto fail;
ret = listen(fd, 0);
if (ret < 0)
goto fail;
s->listen_fd = fd;
qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
if (is_telnet)
s->do_telnetopt = 1;
} else {
for(;;) {
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
ret = connect(fd, addr, addrlen);
if (ret < 0) {
err = socket_error();
if (err == EINTR || err == EWOULDBLOCK) {
@ -2530,10 +2590,6 @@ static CharDriverState *qemu_chr_open_tcp(const char *host_str,
qemu_set_fd_handler(s->fd, NULL, tcp_chr_connect, chr);
}
chr->opaque = s;
chr->chr_write = tcp_chr_write;
chr->chr_add_read_handler = tcp_chr_add_read_handler;
chr->chr_close = tcp_chr_close;
if (is_listen && is_waitconnect) {
printf("QEMU waiting for connection on: %s\n", host_str);
tcp_chr_accept(chr);
@ -2559,16 +2615,18 @@ CharDriverState *qemu_chr_open(const char *filename)
return qemu_chr_open_null();
} else
if (strstart(filename, "tcp:", &p)) {
return qemu_chr_open_tcp(p, 0);
return qemu_chr_open_tcp(p, 0, 0);
} else
if (strstart(filename, "telnet:", &p)) {
return qemu_chr_open_tcp(p, 1);
return qemu_chr_open_tcp(p, 1, 0);
} else
if (strstart(filename, "udp:", &p)) {
return qemu_chr_open_udp(p);
} else
#ifndef _WIN32
if (strstart(filename, "file:", &p)) {
if (strstart(filename, "unix:", &p)) {
return qemu_chr_open_tcp(p, 0, 1);
} else if (strstart(filename, "file:", &p)) {
return qemu_chr_open_file_out(p);
} else if (strstart(filename, "pipe:", &p)) {
return qemu_chr_open_pipe(p);
@ -2743,6 +2801,24 @@ int parse_host_port(struct sockaddr_in *saddr, const char *str)
return 0;
}
int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
{
const char *p;
int len;
len = MIN(108, strlen(str));
p = strchr(str, ',');
if (p)
len = MIN(len, p - str);
memset(uaddr, 0, sizeof(*uaddr));
uaddr->sun_family = AF_UNIX;
memcpy(uaddr->sun_path, str, len);
return 0;
}
/* find or alloc a new VLAN */
VLANState *qemu_find_vlan(int id)
{
@ -6955,6 +7031,7 @@ int main(int argc, char **argv)
vm_start();
}
}
main_loop();
quit_timers();
return 0;