diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2023-01-16 05:32:06 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2023-01-16 05:32:06 +0000 |
| commit | 9d064db0a2a6e9cebcb374ca76fb50f4c069a39b (patch) | |
| tree | 9d84891dd44eec95d345453bdae1169e120fe866 /usr.bin/kdump/kdump.c | |
| parent | ff34d857fd6e85016c617d586e47c6d77f44d0b5 (diff) | |
we spent far too long debugging a weird go library problem (incorrect
arguments to mmap) because it was using syscall(2) and that callpath
is invisible in ktrace. make it visible, it will now show "(via syscall)"
and such.
ok guenther
Diffstat (limited to 'usr.bin/kdump/kdump.c')
| -rw-r--r-- | usr.bin/kdump/kdump.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/usr.bin/kdump/kdump.c b/usr.bin/kdump/kdump.c index f334d643a78..3f5ce0c4780 100644 --- a/usr.bin/kdump/kdump.c +++ b/usr.bin/kdump/kdump.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kdump.c,v 1.154 2023/01/07 05:26:40 guenther Exp $ */ +/* $OpenBSD: kdump.c,v 1.155 2023/01/16 05:32:05 deraadt Exp $ */ /*- * Copyright (c) 1988, 1993 @@ -908,7 +908,7 @@ static void ktrsyscall(struct ktr_syscall *ktr, size_t ktrlen) { register_t *ap; - int narg; + int narg, code; char sep; if (ktr->ktr_argsize > ktrlen) @@ -918,14 +918,19 @@ ktrsyscall(struct ktr_syscall *ktr, size_t ktrlen) narg = ktr->ktr_argsize / sizeof(register_t); sep = '\0'; - if (ktr->ktr_code >= SYS_MAXSYSCALL || ktr->ktr_code < 0) - (void)printf("[%d]", ktr->ktr_code); + if (ktr->ktr_code & KTRC_CODE_SYSCALL) + (void)printf("(via syscall) "); + else if (ktr->ktr_code & KTRC_CODE__SYSCALL) + (void)printf("(via __syscall) "); + code = ktr->ktr_code & KTRC_CODE_MASK; + if (code >= SYS_MAXSYSCALL || code < 0) + (void)printf("[%d]", code); else - (void)printf("%s", syscallnames[ktr->ktr_code]); + (void)printf("%s", syscallnames[code]); ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); (void)putchar('('); - if (ktr->ktr_code == SYS_sysctl && fancy) { + if (code == SYS_sysctl && fancy) { const char *s; int n, i, *top; @@ -954,8 +959,8 @@ ktrsyscall(struct ktr_syscall *ktr, size_t ktrlen) sep = ','; ap += 2; narg -= 2; - } else if (ktr->ktr_code < nitems(scargs)) { - const formatter *fmts = scargs[ktr->ktr_code]; + } else if (code < nitems(scargs)) { + const formatter *fmts = scargs[code]; int fmt; int arg = 0; |