Author: trasz Date: Thu Jul 4 19:44:13 2019 New Revision: 349747 URL: https://svnweb.freebsd.org/changeset/base/349747
Log: Implement PTRACE_GETSIGINFO. This makes Linux strace(1) quieter in some cases (strace -f man id > /dev/null). Reviewed by: dchagin MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D20691 Modified: head/sys/amd64/linux/linux_ptrace.c Modified: head/sys/amd64/linux/linux_ptrace.c ============================================================================== --- head/sys/amd64/linux/linux_ptrace.c Thu Jul 4 19:40:01 2019 (r349746) +++ head/sys/amd64/linux/linux_ptrace.c Thu Jul 4 19:44:13 2019 (r349747) @@ -68,6 +68,7 @@ __FBSDID("$FreeBSD$"); #define LINUX_PTRACE_DETACH 17 #define LINUX_PTRACE_SYSCALL 24 #define LINUX_PTRACE_SETOPTIONS 0x4200 +#define LINUX_PTRACE_GETSIGINFO 0x4202 #define LINUX_PTRACE_GETREGSET 0x4204 #define LINUX_PTRACE_SEIZE 0x4206 @@ -367,6 +368,31 @@ linux_ptrace_setoptions(struct thread *td, pid_t pid, } static int +linux_ptrace_getsiginfo(struct thread *td, pid_t pid, l_ulong data) +{ + struct ptrace_lwpinfo lwpinfo; + l_siginfo_t l_siginfo; + int error, sig; + + error = kern_ptrace(td, PT_LWPINFO, pid, &lwpinfo, sizeof(lwpinfo)); + if (error != 0) { + linux_msg(td, "PT_LWPINFO failed with error %d", error); + return (error); + } + + if ((lwpinfo.pl_flags & PL_FLAG_SI) == 0) { + error = EINVAL; + linux_msg(td, "no PL_FLAG_SI, returning %d", error); + return (error); + } + + sig = bsd_to_linux_signal(lwpinfo.pl_siginfo.si_signo); + siginfo_to_lsiginfo(&lwpinfo.pl_siginfo, &l_siginfo, sig); + error = copyout(&l_siginfo, (void *)data, sizeof(l_siginfo)); + return (error); +} + +static int linux_ptrace_getregs(struct thread *td, pid_t pid, void *data) { struct ptrace_lwpinfo lwpinfo; @@ -579,6 +605,9 @@ linux_ptrace(struct thread *td, struct linux_ptrace_ar break; case LINUX_PTRACE_SETOPTIONS: error = linux_ptrace_setoptions(td, pid, uap->data); + break; + case LINUX_PTRACE_GETSIGINFO: + error = linux_ptrace_getsiginfo(td, pid, uap->data); break; case LINUX_PTRACE_GETREGSET: error = linux_ptrace_getregset(td, pid, uap->addr, uap->data); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
