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-rw-r--r--gdb/ChangeLog7
-rw-r--r--gdb/nat/netbsd-nat.c17
-rw-r--r--gdb/nat/netbsd-nat.h8
3 files changed, 32 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index b4042be..2b8a0ac 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
2020-09-10 Kamil Rytarowski <n54@gmx.com>
+ * netbsd-nat.h: Include <unistd.h>.
+ * (netbsd_nat::pid_to_exec_file): Add.
+ * netbsd-nat.c: Include <sys/types.h> and <sys/sysctl.h>.
+ * (netbsd_nat::pid_to_exec_file) Add.
+
+2020-09-10 Kamil Rytarowski <n54@gmx.com>
+
* configure.nat (NATDEPFILES): Add nat/netbsd-nat.o when needed.
2020-09-10 Kamil Rytarowski <n54@gmx.com>
diff --git a/gdb/nat/netbsd-nat.c b/gdb/nat/netbsd-nat.c
index 2b5a418..a63ac04 100644
--- a/gdb/nat/netbsd-nat.c
+++ b/gdb/nat/netbsd-nat.c
@@ -19,6 +19,23 @@
#include "nat/netbsd-nat.h"
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
namespace netbsd_nat
{
+
+/* See netbsd-nat.h. */
+
+const char *
+pid_to_exec_file (pid_t pid)
+{
+ static char buf[PATH_MAX];
+ int mib[4] = {CTL_KERN, KERN_PROC_ARGS, pid, KERN_PROC_PATHNAME};
+ size_t buflen = sizeof (buf);
+ if (::sysctl (mib, ARRAY_SIZE (mib), buf, &buflen, NULL, 0) != 0)
+ return NULL;
+ return buf;
+}
+
}
diff --git a/gdb/nat/netbsd-nat.h b/gdb/nat/netbsd-nat.h
index 5fa0874..d11fadd 100644
--- a/gdb/nat/netbsd-nat.h
+++ b/gdb/nat/netbsd-nat.h
@@ -20,8 +20,16 @@
#ifndef NAT_NETBSD_NAT_H
#define NAT_NETBSD_NAT_H
+#include <unistd.h>
+
namespace netbsd_nat
{
+
+/* Return the executable file name of a process specified by PID. Returns the
+ string in a static buffer. */
+
+extern const char *pid_to_exec_file (pid_t pid);
+
}
#endif