diff options
| -rw-r--r-- | sys/ddb/db_command.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sys/ddb/db_command.c b/sys/ddb/db_command.c index 57b722b..dfbdc10 100644 --- a/sys/ddb/db_command.c +++ b/sys/ddb/db_command.c @@ -36,7 +36,11 @@ */ #include <sys/param.h> #include <sys/linker_set.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/proc.h> #include <sys/reboot.h> +#include <sys/signalvar.h> #include <sys/systm.h> #include <sys/cons.h> @@ -63,6 +67,7 @@ SET_DECLARE(db_show_cmd_set, struct command); static db_cmdfcn_t db_fncall; static db_cmdfcn_t db_gdb; +static db_cmdfcn_t db_kill; static db_cmdfcn_t db_reset; /* XXX this is actually forward-static. */ @@ -418,6 +423,7 @@ static struct command db_command_table[] = { { "ps", db_ps, 0, 0 }, { "gdb", db_gdb, 0, 0 }, { "reset", db_reset, 0, 0 }, + { "kill", db_kill, CS_OWN, 0 }, { (char *)0, } }; @@ -574,6 +580,59 @@ db_gdb (dummy1, dummy2, dummy3, dummy4) } static void +db_kill(dummy1, dummy2, dummy3, dummy4) + db_expr_t dummy1; + boolean_t dummy2; + db_expr_t dummy3; + char * dummy4; +{ + db_expr_t old_radix, pid, sig; + struct proc *p; + +#define DB_ERROR(f) do { db_printf f; db_flush_lex(); goto out; } while (0) + + /* + * PIDs and signal numbers are typically represented in base + * 10, so make that the default here. It can, of course, be + * overridden by specifying a prefix. + */ + old_radix = db_radix; + db_radix = 10; + /* Retrieve arguments. */ + if (!db_expression(&sig)) + DB_ERROR(("Missing signal number\n")); + if (!db_expression(&pid)) + DB_ERROR(("Missing process ID\n")); + db_skip_to_eol(); + if (sig < 0 || sig > _SIG_MAXSIG) + DB_ERROR(("Signal number out of range\n")); + + /* + * Find the process in question. allproc_lock is not needed + * since we're in DDB. + */ + /* sx_slock(&allproc_lock); */ + LIST_FOREACH(p, &allproc, p_list) + if (p->p_pid == pid) + break; + /* sx_sunlock(&allproc_lock); */ + if (p == NULL) + DB_ERROR(("Can't find process with pid %d\n", pid)); + + /* If it's already locked, bail; otherwise, do the deed. */ + if (PROC_TRYLOCK(p) == 0) + DB_ERROR(("Can't lock process with pid %d\n", pid)); + else { + psignal(p, sig); + PROC_UNLOCK(p); + } + +out: + db_radix = old_radix; +#undef DB_ERROR +} + +static void db_reset(dummy1, dummy2, dummy3, dummy4) db_expr_t dummy1; boolean_t dummy2; |
