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Present the bvm dbgport to the guest only when explicitly requested via

Browse Source 
the "-g" command line option.

Suggested by:	grehan
Obtained from:	NetApp
This commit is contained in:
Neel Natu 2012-10-27 22:58:02 +00:00
parent 1ea1e18490
commit 275eece835
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/bhyve/; revision=242195
1 changed files with 40 additions and 27 deletions
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67
usr.sbin/bhyve/dbgport.c
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@ -44,37 +44,12 @@ __FBSDID("$FreeBSD$");
#include "dbgport.h"
#define BVM_DBG_PORT 0x224
#define BVM_DBG_SIG ('B' << 8 | 'V')
static int listen_fd, conn_fd;
static struct sockaddr_in sin;
void
init_dbgport(int sport)
{
conn_fd = -1;
if ((listen_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("socket");
exit(1);
}
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_ANY);
sin.sin_port = htons(sport);
if (bind(listen_fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
perror("bind");
exit(1);
}
if (listen(listen_fd, 1) < 0) {
perror("listen");
exit(1);
}
}
static int
dbg_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
uint32_t *eax, void *arg)
@ -82,6 +57,11 @@ dbg_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
char ch;
int nwritten, nread, printonce;
if (bytes == 2 && in) {
*eax = BVM_DBG_SIG;
return (0);
}
if (bytes != 4)
return (-1);
@ -122,4 +102,37 @@ dbg_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
return (0);
}
INOUT_PORT(dbg, BVM_DBG_PORT, IOPORT_F_INOUT, dbg_handler);
static struct inout_port dbgport = {
"bvmdbg",
BVM_DBG_PORT,
IOPORT_F_INOUT,
dbg_handler
};
void
init_dbgport(int sport)
{
conn_fd = -1;
if ((listen_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("socket");
exit(1);
}
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(INADDR_ANY);
sin.sin_port = htons(sport);
if (bind(listen_fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
perror("bind");
exit(1);
}
if (listen(listen_fd, 1) < 0) {
perror("listen");
exit(1);
}
register_inout(&dbgport);
}