[Crash-utility] [PATCH v2 6/7] Add get_remote_cr3

From: Don Slutz <dslutz(a)verizon.com&gt; Signed-off-by: Don Slutz <dslutz(a)verizon.com&gt; --- defs.h | 1 + remote.c | 39 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) diff --git a/defs.h b/defs.h index de10b70..dae9662 100755 --- a/defs.h +++ b/defs.h @@ -5530,6 +5530,7 @@ int is_remote_daemon(char *); physaddr_t get_remote_phys_base(physaddr_t, physaddr_t); physaddr_t remote_vtop(int, physaddr_t); int get_remote_regs(struct bt_info *, ulong *, ulong *); +physaddr_t get_remote_cr3(int); void remote_fd_init(void); int get_remote_file(struct remote_file *); uint remote_page_size(void); diff --git a/remote.c b/remote.c index b8a00a7..621942e 100755 --- a/remote.c +++ b/remote.c @@ -2446,6 +2446,45 @@ get_remote_regs(struct bt_info *bt, ulong *eip, ulong *esp) } /* + * Get a remote cr3 if supported. + */ +physaddr_t +get_remote_cr3(int cpu) +{ + char sendbuf[BUFSIZE]; + char recvbuf[BUFSIZE]; + char *p1; + int errflag; + ulong value; + + if (!rc->remote_type[0]) + return 0; /* Not a special remote. */ + + BZERO(sendbuf, BUFSIZE); + BZERO(recvbuf, BUFSIZE); + sprintf(sendbuf, "FETCH_LIVE_CR3 %d", cpu); + if (remote_tcp_write_string(pc->sockfd, sendbuf)) + return 0; + remote_tcp_read_string(pc->sockfd, recvbuf, BUFSIZE-1, NIL_MODE()); + + if (CRASHDEBUG(1)) + fprintf(fp, "get_remote_cr3: [%s]\n", recvbuf); + + if (strstr(recvbuf, "<FAIL>")) + error(FATAL, "get_remote_cr3 for CPU %d\n", cpu); + p1 = strtok(recvbuf, " "); /* FETCH_LIVE_CR3 */ + p1 = strtok(NULL, " "); /* cpu */ + p1 = strtok(NULL, " "); /* cr3 */ + + errflag = 0; + value = htol(p1, RETURN_ON_ERROR|QUIET, &errflag); + if (!errflag) + return value; + return 0; +} + + +/* * * Set up the file descriptors and file name strings if they haven't * been set up before: -- 1.8.4