const char *help;
} mon_cmd_t;
+/* file descriptors passed via SCM_RIGHTS */
+typedef struct mon_fd_t mon_fd_t;
+struct mon_fd_t {
+ char *name;
+ int fd;
+ LIST_ENTRY(mon_fd_t) next;
+};
+
struct Monitor {
CharDriverState *chr;
int flags;
CPUState *mon_cpu;
BlockDriverCompletionFunc *password_completion_cb;
void *password_opaque;
+ LIST_HEAD(,mon_fd_t) fds;
LIST_ENTRY(Monitor) entry;
};
}
#endif
+static void do_getfd(Monitor *mon, const char *fdname)
+{
+ mon_fd_t *monfd;
+ int fd;
+
+ fd = qemu_chr_get_msgfd(mon->chr);
+ if (fd == -1) {
+ monitor_printf(mon, "getfd: no file descriptor supplied via SCM_RIGHTS\n");
+ return;
+ }
+
+ if (qemu_isdigit(fdname[0])) {
+ monitor_printf(mon, "getfd: monitor names may not begin with a number\n");
+ return;
+ }
+
+ fd = dup(fd);
+ if (fd == -1) {
+ monitor_printf(mon, "Failed to dup() file descriptor: %s\n",
+ strerror(errno));
+ return;
+ }
+
+ LIST_FOREACH(monfd, &mon->fds, next) {
+ if (strcmp(monfd->name, fdname) != 0) {
+ continue;
+ }
+
+ close(monfd->fd);
+ monfd->fd = fd;
+ return;
+ }
+
+ monfd = qemu_mallocz(sizeof(mon_fd_t));
+ monfd->name = qemu_strdup(fdname);
+ monfd->fd = fd;
+
+ LIST_INSERT_HEAD(&mon->fds, monfd, next);
+}
+
+static void do_closefd(Monitor *mon, const char *fdname)
+{
+ mon_fd_t *monfd;
+
+ LIST_FOREACH(monfd, &mon->fds, next) {
+ if (strcmp(monfd->name, fdname) != 0) {
+ continue;
+ }
+
+ LIST_REMOVE(monfd, next);
+ close(monfd->fd);
+ qemu_free(monfd->name);
+ qemu_free(monfd);
+ return;
+ }
+
+ monitor_printf(mon, "Failed to find file descriptor named %s\n",
+ fdname);
+}
+
static const mon_cmd_t mon_cmds[] = {
#include "qemu-monitor.h"
{ NULL, NULL, },
STEXI
@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
Inject an MCE on the given CPU (x86 only).
+ETEXI
+
+ { "getfd", "s", do_getfd, "getfd name",
+ "receive a file descriptor via SCM rights and assign it a name" },
+STEXI
+@item getfd @var{fdname}
+If a file descriptor is passed alongside this command using the SCM_RIGHTS
+mechanism on unix sockets, it is stored using the name @var{fdname} for
+later use by other monitor commands.
+ETEXI
+
+ { "closefd", "s", do_closefd, "closefd name",
+ "close a file descriptor previously passed via SCM rights" },
+STEXI
+@item closefd @var{fdname}
+Close the file descriptor previously assigned to @var{fdname} using the
+@code{getfd} command. This is only needed if the file descriptor was never
+used by another monitor command.
ETEXI
STEXI