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implement proc_getlwpstatus() for netbsd using PT_GET_SIGINFO.

This commit is contained in:
chs 2017-02-01 20:01:39 +00:00
parent 9aa5903c8e
commit b222cea9e3
1 changed files with 29 additions and 8 deletions
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37
external/bsd/libproc/dist/proc_util.c vendored
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@ -36,6 +36,7 @@
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include "_libproc.h"
@ -216,17 +217,39 @@ proc_getlwpstatus(struct proc_handle *phdl)
struct ptrace_lwpinfo lwpinfo;
lwpstatus_t *psp = &phdl->lwps;
siginfo_t *siginfo;
bool have_siginfo, sysentry, sysexit;
if (phdl == NULL)
return (NULL);
lwpinfo.pl_lwpid = 1;
lwpinfo.pl_lwpid = 0;
if (ptrace(PT_LWPINFO, phdl->pid, (void *)&lwpinfo,
sizeof(lwpinfo)) < 0)
return (NULL);
#ifdef PL_FLAG_SI
siginfo = &lwpinfo.pl_siginfo;
if (lwpinfo.pl_event == PL_EVENT_SIGNAL &&
(lwpinfo.pl_flags & PL_FLAG_SI) != 0) {
have_siginfo = (lwpinfo.pl_flags & PL_FLAG_SI) != 0;
sysentry = (lwpinfo.pl_flags & PL_FLAG_SCE) != 0;
sysexit = (lwpinfo.pl_flags & PL_FLAG_SCX) != 0;
#endif
#ifdef PT_GET_SIGINFO
have_siginfo = 1;
sysentry = 0;
sysexit = 0;
#endif
if (lwpinfo.pl_event == PL_EVENT_SIGNAL && have_siginfo) {
#ifdef PL_FLAG_SI
siginfo = &lwpinfo.pl_siginfo;
#endif
#ifdef PT_GET_SIGINFO
struct ptrace_siginfo si;
if (ptrace(PT_GET_SIGINFO, phdl->pid, (void *)&si,
sizeof(si)) < 0)
return (NULL);
siginfo = &si.psi_siginfo;
#endif
if (siginfo->si_signo == SIGTRAP &&
(siginfo->si_code == TRAP_BRKPT ||
siginfo->si_code == TRAP_TRACE)) {
@ -236,12 +259,10 @@ proc_getlwpstatus(struct proc_handle *phdl)
psp->pr_why = PR_SIGNALLED;
psp->pr_what = siginfo->si_signo;
}
} else if (lwpinfo.pl_flags & PL_FLAG_SCE) {
} else if (sysentry) {
psp->pr_why = PR_SYSENTRY;
} else if (lwpinfo.pl_flags & PL_FLAG_SCX) {
} else if (sysexit) {
psp->pr_why = PR_SYSEXIT;
}
#endif
return (psp);
}