diff options
| author | Martin Pieuchot <mpi@cvs.openbsd.org> | 2017-09-29 09:36:05 +0000 |
|---|---|---|
| committer | Martin Pieuchot <mpi@cvs.openbsd.org> | 2017-09-29 09:36:05 +0000 |
| commit | a9d8f8818f51b039333984dd38e42a3078efc5b0 (patch) | |
| tree | 6bb7e1b8aecf5abae7237a84f723a08eabbdb5c3 /sys/kern | |
| parent | eb58ac5b3ac3fb526c35c7455e27e6463949add8 (diff) | |
New ddb(4) command: kill.
Send an uncatchable SIGABRT to the process specified by the pid
argument. Useful in case of CPU exhaustion to kill the DoSing
process and generate a core for later inspection.
ok phessler@, visa@, kettenis@, miod@
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_proc.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c index 2436de90016..37ad3232b75 100644 --- a/sys/kern/kern_proc.c +++ b/sys/kern/kern_proc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_proc.c,v 1.76 2017/02/04 07:42:52 guenther Exp $ */ +/* $OpenBSD: kern_proc.c,v 1.77 2017/09/29 09:36:04 mpi Exp $ */ /* $NetBSD: kern_proc.c,v 1.14 1996/02/09 18:59:41 christos Exp $ */ /* @@ -440,6 +440,28 @@ proc_printit(struct proc *p, const char *modif, #include <ddb/db_output.h> void +db_kill_cmd(db_expr_t addr, int have_addr, db_expr_t count, char *modif) +{ + struct process *pr; + struct sigaction sa; + struct proc *p; + + pr = prfind(addr); + if (pr == NULL) { + db_printf("%ld: No such process", addr); + return; + } + + p = TAILQ_FIRST(&pr->ps_threads); + + /* Send uncatchable SIGABRT for coredump */ + memset(&sa, 0, sizeof sa); + sa.sa_handler = SIG_DFL; + setsigvec(p, SIGABRT, &sa); + psignal(p, SIGABRT); +} + +void db_show_all_procs(db_expr_t addr, int haddr, db_expr_t count, char *modif) { char *mode; |