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From: Kamil Rytarowski <krytarowski@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] Implement "info proc cwd" for NetBSD Date: Sun, 12 Apr 2020 18:15:17 +0000 (GMT) [thread overview] Message-ID: <20200412181517.BC927385BF83@sourceware.org> (raw) 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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