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| author | Jerry Jelinek <jerry.jelinek@joyent.com> | 2016-06-20 15:23:05 +0000 |
|---|---|---|
| committer | Jerry Jelinek <jerry.jelinek@joyent.com> | 2016-06-20 15:23:05 +0000 |
| commit | 158f4dbcf60701c4d8de07146a38d78ab1b77dfe (patch) | |
| tree | 93e401ca78fefee30972a0f9b76fc02defd317ec /usr/src/lib | |
| parent | 45bb95d9cdaf14d6998c192509a67f6da0617971 (diff) | |
| download | illumos-joyent-158f4dbcf60701c4d8de07146a38d78ab1b77dfe.tar.gz | |
OS-5431 under many conditions, ptrace (strace) on Ubuntu 16 shows syscalls return ENOSYS
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Diffstat (limited to 'usr/src/lib')
| -rw-r--r-- | usr/src/lib/brand/lx/lx_brand/common/signal.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/usr/src/lib/brand/lx/lx_brand/common/signal.c b/usr/src/lib/brand/lx/lx_brand/common/signal.c index 80f1bf09a1..7d07dfe66d 100644 --- a/usr/src/lib/brand/lx/lx_brand/common/signal.c +++ b/usr/src/lib/brand/lx/lx_brand/common/signal.c @@ -25,7 +25,7 @@ */ /* - * Copyright 2015 Joyent, Inc. All rights reserved. + * Copyright 2016 Joyent, Inc. All rights reserved. */ #include <sys/types.h> @@ -1077,6 +1077,12 @@ lx_rt_sigreturn(void) ucontext_t *retucp; uintptr_t sp; + /* + * Since we don't take the normal return path from this syscall, we + * inform the kernel that we're returning, for the sake of ptrace. + */ + (void) syscall(SYS_brand, B_PTRACE_SIG_RETURN); + /* Get the registers at the emulated Linux rt_sigreturn syscall */ ucp = lx_syscall_regs(); |