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Detecting if we are debugged BSD/MacOS. #4367

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40eea80
Detecting if we are debugged FreeBSD/MacOS.
devnexen Jul 6, 2019
32962f4
Keeping the parent in case...
devnexen Jul 6, 2019
7d783ba
Find more common grounds accross BSDs.
devnexen Jul 6, 2019
c9db621
OpenBSD support
devnexen Jul 7, 2019
0b348e8
NetBSD support and fixes
devnexen Jul 7, 2019
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54 changes: 54 additions & 0 deletions Zend/zend_gdb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,11 @@

#include <sys/types.h>
#include <sys/stat.h>
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
#include <sys/sysctl.h>
#include <sys/user.h>
#include <sys/proc.h>
#endif
#include <fcntl.h>
#include <unistd.h>

Expand Down Expand Up @@ -105,6 +110,7 @@ ZEND_API void zend_gdb_unregister_all(void)
ZEND_API int zend_gdb_present(void)
{
int ret = 0;
#if defined(__linux__)
int fd = open("/proc/self/status", O_RDONLY);

if (fd > 0) {
Expand Down Expand Up @@ -136,6 +142,54 @@ ZEND_API int zend_gdb_present(void)

close(fd);
}
#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
#if defined(__APPLE__)
#define KINFO_MIB int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid()};
#define KINFO_PROC_FLAG (cproc->kp_proc.p_flag)
#define KINFO_PROC_PPID (cproc->kp_proc.p_oppid)
#define KINFO_PROC_COMM (pcproc->kp_proc.p_comm)
#elif defined(__FreeBSD__)
#define KINFO_MIB int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid()};
#define KINFO_PROC_FLAG (cproc->ki_flag)
#define KINFO_PROC_PPID (cproc->ki_ppid)
#define KINFO_PROC_COMM (pcproc->ki_comm)
#elif defined(__OpenBSD__)
#define P_TRACED PS_TRACED
#define KINFO_MIB int mib[6] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid(), sizeof(struct kinfo_proc), 1};
#define KINFO_PROC_FLAG (cproc->p_psflags)
#define KINFO_PROC_PPID (cproc->p_ppid)
#define KINFO_PROC_COMM (pcproc->p_comm)
#elif defined(__NetBSD__)
#define kinfo_proc kinfo_proc2
#define KINFO_MIB int mib[6] = {CTL_KERN, KERN_PROC2, KERN_PROC_PID, getpid(), sizeof(struct kinfo_proc2), 1};
#define KINFO_PROC_FLAG (cproc->p_flag)
#define KINFO_PROC_PPID (cproc->p_ppid)
#define KINFO_PROC_COMM (pcproc->p_comm)
#endif
struct kinfo_proc *cproc;
size_t cproclen = 0;
KINFO_MIB
const size_t miblen = sizeof(mib)/sizeof(mib[0]);
if (sysctl(mib, miblen, NULL, &cproclen, NULL, 0) != 0) {
return 0;
}
cproc = (struct kinfo_proc *)malloc(cproclen);
if (sysctl(mib, 4, cproc, &cproclen, NULL, 0) == 0) {
if ((KINFO_PROC_FLAG & P_TRACED) != 0) {
pid_t ppid = KINFO_PROC_PPID;
mib[3] = ppid;
struct kinfo_proc *pcproc = (struct kinfo_proc *)malloc(cproclen);
if (sysctl(mib, miblen, pcproc, &cproclen, NULL, 0) == 0) {
// Could be prefixed with package systems e.g. egdb
if (strstr(KINFO_PROC_COMM, "gdb")) {
ret = 1;
}
}
free(pcproc);
}
}
free(cproc);
#endif

return ret;
}