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* [binutils-gdb] Implement "info proc cwd" for NetBSD
@ 2020-04-12 18:15 Kamil Rytarowski
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From: Kamil Rytarowski @ 2020-04-12 18:15 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b4848d2a7b63d6001051f39d50ca965cb4210951
commit b4848d2a7b63d6001051f39d50ca965cb4210951
Author: Kamil Rytarowski <n54@gmx.com>
Date: Sun Apr 12 19:24:01 2020 +0200
Implement "info proc cwd" for NetBSD
Add nbsd_pid_to_cwd() to query the program current directory.
gdb/ChangeLog:
* nbsd-nat.c (nbsd_pid_to_cwd): Add.
(nbsd_nat_target::info_proc): Add do_cwd.
Diff:
---
gdb/ChangeLog | 5 +++++
gdb/nbsd-nat.c | 26 ++++++++++++++++++++++++++
2 files changed, 31 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3bbd5c3129d..9e49cf9cf97 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-04-12 Kamil Rytarowski <n54@gmx.com>
+
+ * nbsd-nat.c (nbsd_pid_to_cwd): Add.
+ (nbsd_nat_target::info_proc): Add do_cwd.
+
2020-04-12 Kamil Rytarowski <n54@gmx.com>
* nbsd-nat.c (nbsd_nat_target::info_proc): Add do_exe.
diff --git a/gdb/nbsd-nat.c b/gdb/nbsd-nat.c
index 05aedf8e3f1..1bb35f82c18 100644
--- a/gdb/nbsd-nat.c
+++ b/gdb/nbsd-nat.c
@@ -44,6 +44,20 @@ nbsd_nat_target::pid_to_exec_file (int pid)
return buf;
}
+/* Return the current directory for the process identified by PID. */
+
+static std::string
+nbsd_pid_to_cwd (int pid)
+{
+ char buf[PATH_MAX];
+ size_t buflen;
+ int mib[4] = {CTL_KERN, KERN_PROC_ARGS, pid, KERN_PROC_CWD};
+ buflen = sizeof (buf);
+ if (sysctl (mib, ARRAY_SIZE (mib), buf, &buflen, NULL, 0))
+ return "";
+ return buf;
+}
+
/* Generic thread (LWP) lister within a specified process. The callback
parameters is a C++ function that is called for each detected thread. */
@@ -299,6 +313,7 @@ bool
nbsd_nat_target::info_proc (const char *args, enum info_proc_what what)
{
pid_t pid;
+ bool do_cwd = false;
bool do_exe = false;
bool do_mappings = false;
@@ -310,6 +325,9 @@ nbsd_nat_target::info_proc (const char *args, enum info_proc_what what)
case IP_EXE:
do_exe = true;
break;
+ case IP_CWD:
+ do_cwd = true;
+ break;
default:
error (_("Not supported on this target."));
}
@@ -328,6 +346,14 @@ nbsd_nat_target::info_proc (const char *args, enum info_proc_what what)
printf_filtered (_("process %d\n"), pid);
+ if (do_cwd)
+ {
+ std::string cwd = nbsd_pid_to_cwd (pid);
+ if (cwd != "")
+ printf_filtered ("cwd = '%s'\n", cwd.c_str ());
+ else
+ warning (_("unable to fetch current working directory"));
+ }
if (do_exe)
{
const char *exe = pid_to_exec_file (pid);
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2020-04-12 18:15 [binutils-gdb] Implement "info proc cwd" for NetBSD Kamil Rytarowski
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