Support 'info proc' for native FreeBSD processes.
- Command line arguments are fetched via the kern.proc.args.<pid> sysctl. - The 'cwd' and 'exe' values are obtained from the per-process file descriptor table returned by kinfo_getfile() from libutil. - 'mappings' is implemented by walking the array of VM map entries returned by kinfo_getvmmap() from libutil. - 'status' output is generated by outputting fields from the structure returned by the kern.proc.pid.<pid> sysctl. - 'stat' is aliased to 'status'. gdb/ChangeLog: * configure.ac: Check for kinfo_getfile in libutil. * configure: Regenerate. * config.in: Regenerate. * fbsd-nat.c: Include "fbsd-tdep.h". (fbsd_fetch_cmdline): New. (fbsd_fetch_kinfo_proc): Move earlier and change to return a bool rather than calling error. (fbsd_info_proc): New. (fbsd_thread_name): Report error if fbsd_fetch_kinfo_proc fails. (fbsd_wait): Report warning if fbsd_fetch_kinfo_proc fails. (fbsd_nat_add_target): Set "to_info_proc" to "fbsd_info_proc".
This commit is contained in:
John Baldwin
parent
262f62f57d
commit
92fce24de2
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@ -1,3 +1,17 @@
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2018-01-09 John Baldwin <jhb@FreeBSD.org>
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* configure.ac: Check for kinfo_getfile in libutil.
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* configure: Regenerate.
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* config.in: Regenerate.
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* fbsd-nat.c: Include "fbsd-tdep.h".
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(fbsd_fetch_cmdline): New.
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(fbsd_fetch_kinfo_proc): Move earlier and change to return a bool
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rather than calling error.
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(fbsd_info_proc): New.
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(fbsd_thread_name): Report error if fbsd_fetch_kinfo_proc fails.
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(fbsd_wait): Report warning if fbsd_fetch_kinfo_proc fails.
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(fbsd_nat_add_target): Set "to_info_proc" to "fbsd_info_proc".
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2018-01-09 John Baldwin <jhb@FreeBSD.org>
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* fbsd-nat.c (struct free_deleter): Remove.
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@ -219,6 +219,9 @@
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/* Define to 1 if you have the <inttypes.h> header file. */
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#undef HAVE_INTTYPES_H
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/* Define to 1 if your system has the kinfo_getfile function. */
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#undef HAVE_KINFO_GETFILE
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/* Define to 1 if your system has the kinfo_getvmmap function. */
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#undef HAVE_KINFO_GETVMMAP
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@ -7927,6 +7927,66 @@ $as_echo "#define HAVE_KINFO_GETVMMAP 1" >>confdefs.h
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fi
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# fbsd-nat.c can also use kinfo_getfile.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing kinfo_getfile" >&5
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$as_echo_n "checking for library containing kinfo_getfile... " >&6; }
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if test "${ac_cv_search_kinfo_getfile+set}" = set; then :
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$as_echo_n "(cached) " >&6
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else
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ac_func_search_save_LIBS=$LIBS
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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/* Override any GCC internal prototype to avoid an error.
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Use char because int might match the return type of a GCC
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builtin and then its argument prototype would still apply. */
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#ifdef __cplusplus
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extern "C"
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#endif
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char kinfo_getfile ();
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int
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main ()
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{
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return kinfo_getfile ();
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;
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return 0;
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}
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_ACEOF
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for ac_lib in '' util util-freebsd; do
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if test -z "$ac_lib"; then
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ac_res="none required"
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else
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ac_res=-l$ac_lib
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LIBS="-l$ac_lib $ac_func_search_save_LIBS"
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fi
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if ac_fn_c_try_link "$LINENO"; then :
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ac_cv_search_kinfo_getfile=$ac_res
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext
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if test "${ac_cv_search_kinfo_getfile+set}" = set; then :
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break
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fi
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done
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if test "${ac_cv_search_kinfo_getfile+set}" = set; then :
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else
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ac_cv_search_kinfo_getfile=no
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fi
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rm conftest.$ac_ext
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LIBS=$ac_func_search_save_LIBS
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_kinfo_getfile" >&5
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$as_echo "$ac_cv_search_kinfo_getfile" >&6; }
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ac_res=$ac_cv_search_kinfo_getfile
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if test "$ac_res" != no; then :
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test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
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$as_echo "#define HAVE_KINFO_GETFILE 1" >>confdefs.h
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fi
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if test "X$prefix" = "XNONE"; then
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acl_final_prefix="$ac_default_prefix"
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@ -523,6 +523,11 @@ AC_SEARCH_LIBS(kinfo_getvmmap, util util-freebsd,
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[AC_DEFINE(HAVE_KINFO_GETVMMAP, 1,
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[Define to 1 if your system has the kinfo_getvmmap function. ])])
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# fbsd-nat.c can also use kinfo_getfile.
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AC_SEARCH_LIBS(kinfo_getfile, util util-freebsd,
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[AC_DEFINE(HAVE_KINFO_GETFILE, 1,
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[Define to 1 if your system has the kinfo_getfile function. ])])
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AM_ICONV
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# GDB may fork/exec the iconv program to get the list of supported character
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365
gdb/fbsd-nat.c
365
gdb/fbsd-nat.c
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@ -32,14 +32,16 @@
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#include <sys/signal.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#ifdef HAVE_KINFO_GETVMMAP
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#if defined(HAVE_KINFO_GETFILE) || defined(HAVE_KINFO_GETVMMAP)
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#include <libutil.h>
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#else
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#endif
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#if !defined(HAVE_KINFO_GETVMMAP)
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#include "filestuff.h"
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#endif
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#include "elf-bfd.h"
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#include "fbsd-nat.h"
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#include "fbsd-tdep.h"
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#include <list>
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@ -205,6 +207,331 @@ fbsd_find_memory_regions (struct target_ops *self,
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}
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#endif
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/* Fetch the command line for a running process. */
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static gdb::unique_xmalloc_ptr<char>
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fbsd_fetch_cmdline (pid_t pid)
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{
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size_t len;
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int mib[4];
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len = 0;
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC;
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mib[2] = KERN_PROC_ARGS;
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mib[3] = pid;
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if (sysctl (mib, 4, NULL, &len, NULL, 0) == -1)
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return nullptr;
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if (len == 0)
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return nullptr;
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gdb::unique_xmalloc_ptr<char> cmdline ((char *) xmalloc (len));
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if (sysctl (mib, 4, cmdline.get (), &len, NULL, 0) == -1)
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return nullptr;
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return cmdline;
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}
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/* Fetch the external variant of the kernel's internal process
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structure for the process PID into KP. */
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static bool
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fbsd_fetch_kinfo_proc (pid_t pid, struct kinfo_proc *kp)
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{
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size_t len;
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int mib[4];
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len = sizeof *kp;
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC;
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mib[2] = KERN_PROC_PID;
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mib[3] = pid;
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return (sysctl (mib, 4, kp, &len, NULL, 0) == 0);
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}
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/* Implement the "to_info_proc target_ops" method. */
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static void
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fbsd_info_proc (struct target_ops *ops, const char *args,
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enum info_proc_what what)
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{
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#ifdef HAVE_KINFO_GETFILE
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gdb::unique_xmalloc_ptr<struct kinfo_file> fdtbl;
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int nfd = 0;
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#endif
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struct kinfo_proc kp;
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char *tmp;
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pid_t pid;
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bool do_cmdline = false;
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bool do_cwd = false;
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bool do_exe = false;
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#ifdef HAVE_KINFO_GETVMMAP
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bool do_mappings = false;
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#endif
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bool do_status = false;
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switch (what)
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{
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case IP_MINIMAL:
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do_cmdline = true;
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do_cwd = true;
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do_exe = true;
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break;
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#ifdef HAVE_KINFO_GETVMMAP
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case IP_MAPPINGS:
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do_mappings = true;
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break;
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#endif
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case IP_STATUS:
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case IP_STAT:
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do_status = true;
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break;
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case IP_CMDLINE:
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do_cmdline = true;
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break;
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case IP_EXE:
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do_exe = true;
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break;
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case IP_CWD:
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do_cwd = true;
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break;
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case IP_ALL:
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do_cmdline = true;
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do_cwd = true;
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do_exe = true;
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#ifdef HAVE_KINFO_GETVMMAP
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do_mappings = true;
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#endif
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do_status = true;
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break;
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default:
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error (_("Not supported on this target."));
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}
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gdb_argv built_argv (args);
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if (built_argv.count () == 0)
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{
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pid = ptid_get_pid (inferior_ptid);
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if (pid == 0)
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error (_("No current process: you must name one."));
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}
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else if (built_argv.count () == 1 && isdigit (built_argv[0][0]))
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pid = strtol (built_argv[0], NULL, 10);
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else
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error (_("Invalid arguments."));
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printf_filtered (_("process %d\n"), pid);
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#ifdef HAVE_KINFO_GETFILE
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if (do_cwd || do_exe)
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fdtbl.reset (kinfo_getfile (pid, &nfd));
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#endif
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if (do_cmdline)
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{
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gdb::unique_xmalloc_ptr<char> cmdline = fbsd_fetch_cmdline (pid);
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if (cmdline != nullptr)
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printf_filtered ("cmdline = '%s'\n", cmdline.get ());
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else
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warning (_("unable to fetch command line"));
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}
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if (do_cwd)
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{
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const char *cwd = NULL;
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#ifdef HAVE_KINFO_GETFILE
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struct kinfo_file *kf = fdtbl.get ();
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for (int i = 0; i < nfd; i++, kf++)
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{
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if (kf->kf_type == KF_TYPE_VNODE && kf->kf_fd == KF_FD_TYPE_CWD)
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{
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cwd = kf->kf_path;
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break;
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}
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}
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#endif
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if (cwd != NULL)
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printf_filtered ("cwd = '%s'\n", cwd);
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else
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warning (_("unable to fetch current working directory"));
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}
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if (do_exe)
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{
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const char *exe = NULL;
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#ifdef HAVE_KINFO_GETFILE
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struct kinfo_file *kf = fdtbl.get ();
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for (int i = 0; i < nfd; i++, kf++)
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{
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if (kf->kf_type == KF_TYPE_VNODE && kf->kf_fd == KF_FD_TYPE_TEXT)
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{
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exe = kf->kf_path;
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break;
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}
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}
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#endif
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if (exe == NULL)
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exe = fbsd_pid_to_exec_file (ops, pid);
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if (exe != NULL)
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printf_filtered ("exe = '%s'\n", exe);
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else
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warning (_("unable to fetch executable path name"));
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}
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#ifdef HAVE_KINFO_GETVMMAP
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if (do_mappings)
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{
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int nvment;
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gdb::unique_xmalloc_ptr<struct kinfo_vmentry>
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vmentl (kinfo_getvmmap (pid, &nvment));
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if (vmentl != nullptr)
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{
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printf_filtered (_("Mapped address spaces:\n\n"));
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#ifdef __LP64__
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printf_filtered (" %18s %18s %10s %10s %9s %s\n",
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"Start Addr",
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" End Addr",
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" Size", " Offset", "Flags ", "File");
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#else
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printf_filtered ("\t%10s %10s %10s %10s %9s %s\n",
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"Start Addr",
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" End Addr",
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" Size", " Offset", "Flags ", "File");
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#endif
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struct kinfo_vmentry *kve = vmentl.get ();
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for (int i = 0; i < nvment; i++, kve++)
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{
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ULONGEST start, end;
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start = kve->kve_start;
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end = kve->kve_end;
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#ifdef __LP64__
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printf_filtered (" %18s %18s %10s %10s %9s %s\n",
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hex_string (start),
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hex_string (end),
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hex_string (end - start),
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hex_string (kve->kve_offset),
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fbsd_vm_map_entry_flags (kve->kve_flags,
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kve->kve_protection),
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kve->kve_path);
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#else
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printf_filtered ("\t%10s %10s %10s %10s %9s %s\n",
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hex_string (start),
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hex_string (end),
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hex_string (end - start),
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hex_string (kve->kve_offset),
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fbsd_vm_map_entry_flags (kve->kve_flags,
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kve->kve_protection),
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kve->kve_path);
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#endif
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}
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}
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else
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warning (_("unable to fetch virtual memory map"));
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}
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#endif
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if (do_status)
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{
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if (!fbsd_fetch_kinfo_proc (pid, &kp))
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warning (_("Failed to fetch process information"));
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else
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{
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const char *state;
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int pgtok;
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|
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printf_filtered ("Name: %s\n", kp.ki_comm);
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switch (kp.ki_stat)
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{
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case SIDL:
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state = "I (idle)";
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break;
|
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case SRUN:
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state = "R (running)";
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break;
|
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case SSTOP:
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state = "T (stopped)";
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break;
|
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case SZOMB:
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state = "Z (zombie)";
|
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break;
|
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case SSLEEP:
|
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state = "S (sleeping)";
|
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break;
|
||||
case SWAIT:
|
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state = "W (interrupt wait)";
|
||||
break;
|
||||
case SLOCK:
|
||||
state = "L (blocked on lock)";
|
||||
break;
|
||||
default:
|
||||
state = "? (unknown)";
|
||||
break;
|
||||
}
|
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printf_filtered ("State: %s\n", state);
|
||||
printf_filtered ("Parent process: %d\n", kp.ki_ppid);
|
||||
printf_filtered ("Process group: %d\n", kp.ki_pgid);
|
||||
printf_filtered ("Session id: %d\n", kp.ki_sid);
|
||||
printf_filtered ("TTY: %ju\n", (uintmax_t) kp.ki_tdev);
|
||||
printf_filtered ("TTY owner process group: %d\n", kp.ki_tpgid);
|
||||
printf_filtered ("User IDs (real, effective, saved): %d %d %d\n",
|
||||
kp.ki_ruid, kp.ki_uid, kp.ki_svuid);
|
||||
printf_filtered ("Group IDs (real, effective, saved): %d %d %d\n",
|
||||
kp.ki_rgid, kp.ki_groups[0], kp.ki_svgid);
|
||||
printf_filtered ("Groups: ");
|
||||
for (int i = 0; i < kp.ki_ngroups; i++)
|
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printf_filtered ("%d ", kp.ki_groups[i]);
|
||||
printf_filtered ("\n");
|
||||
printf_filtered ("Minor faults (no memory page): %ld\n",
|
||||
kp.ki_rusage.ru_minflt);
|
||||
printf_filtered ("Minor faults, children: %ld\n",
|
||||
kp.ki_rusage_ch.ru_minflt);
|
||||
printf_filtered ("Major faults (memory page faults): %ld\n",
|
||||
kp.ki_rusage.ru_majflt);
|
||||
printf_filtered ("Major faults, children: %ld\n",
|
||||
kp.ki_rusage_ch.ru_majflt);
|
||||
printf_filtered ("utime: %jd.%06ld\n",
|
||||
(intmax_t) kp.ki_rusage.ru_utime.tv_sec,
|
||||
kp.ki_rusage.ru_utime.tv_usec);
|
||||
printf_filtered ("stime: %jd.%06ld\n",
|
||||
(intmax_t) kp.ki_rusage.ru_stime.tv_sec,
|
||||
kp.ki_rusage.ru_stime.tv_usec);
|
||||
printf_filtered ("utime, children: %jd.%06ld\n",
|
||||
(intmax_t) kp.ki_rusage_ch.ru_utime.tv_sec,
|
||||
kp.ki_rusage_ch.ru_utime.tv_usec);
|
||||
printf_filtered ("stime, children: %jd.%06ld\n",
|
||||
(intmax_t) kp.ki_rusage_ch.ru_stime.tv_sec,
|
||||
kp.ki_rusage_ch.ru_stime.tv_usec);
|
||||
printf_filtered ("'nice' value: %d\n", kp.ki_nice);
|
||||
printf_filtered ("Start time: %jd.%06ld\n", kp.ki_start.tv_sec,
|
||||
kp.ki_start.tv_usec);
|
||||
pgtok = getpagesize () / 1024;
|
||||
printf_filtered ("Virtual memory size: %ju kB\n",
|
||||
(uintmax_t) kp.ki_size / 1024);
|
||||
printf_filtered ("Data size: %ju kB\n",
|
||||
(uintmax_t) kp.ki_dsize * pgtok);
|
||||
printf_filtered ("Stack size: %ju kB\n",
|
||||
(uintmax_t) kp.ki_ssize * pgtok);
|
||||
printf_filtered ("Text size: %ju kB\n",
|
||||
(uintmax_t) kp.ki_tsize * pgtok);
|
||||
printf_filtered ("Resident set size: %ju kB\n",
|
||||
(uintmax_t) kp.ki_rssize * pgtok);
|
||||
printf_filtered ("Maximum RSS: %ju kB\n",
|
||||
(uintmax_t) kp.ki_rusage.ru_maxrss);
|
||||
printf_filtered ("Pending Signals: ");
|
||||
for (int i = 0; i < _SIG_WORDS; i++)
|
||||
printf_filtered ("%08x ", kp.ki_siglist.__bits[i]);
|
||||
printf_filtered ("\n");
|
||||
printf_filtered ("Ignored Signals: ");
|
||||
for (int i = 0; i < _SIG_WORDS; i++)
|
||||
printf_filtered ("%08x ", kp.ki_sigignore.__bits[i]);
|
||||
printf_filtered ("\n");
|
||||
printf_filtered ("Caught Signals: ");
|
||||
for (int i = 0; i < _SIG_WORDS; i++)
|
||||
printf_filtered ("%08x ", kp.ki_sigcatch.__bits[i]);
|
||||
printf_filtered ("\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef KERN_PROC_AUXV
|
||||
static enum target_xfer_status (*super_xfer_partial) (struct target_ops *ops,
|
||||
enum target_object object,
|
||||
|
|
@ -455,26 +782,6 @@ show_fbsd_lwp_debug (struct ui_file *file, int from_tty,
|
|||
fprintf_filtered (file, _("Debugging of FreeBSD lwp module is %s.\n"), value);
|
||||
}
|
||||
|
||||
#if defined(TDP_RFPPWAIT) || defined(HAVE_STRUCT_PTRACE_LWPINFO_PL_TDNAME)
|
||||
/* Fetch the external variant of the kernel's internal process
|
||||
structure for the process PID into KP. */
|
||||
|
||||
static void
|
||||
fbsd_fetch_kinfo_proc (pid_t pid, struct kinfo_proc *kp)
|
||||
{
|
||||
size_t len;
|
||||
int mib[4];
|
||||
|
||||
len = sizeof *kp;
|
||||
mib[0] = CTL_KERN;
|
||||
mib[1] = KERN_PROC;
|
||||
mib[2] = KERN_PROC_PID;
|
||||
mib[3] = pid;
|
||||
if (sysctl (mib, 4, kp, &len, NULL, 0) == -1)
|
||||
perror_with_name (("sysctl"));
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
FreeBSD's first thread support was via a "reentrant" version of libc
|
||||
(libc_r) that first shipped in 2.2.7. This library multiplexed all
|
||||
|
|
@ -560,7 +867,8 @@ fbsd_thread_name (struct target_ops *self, struct thread_info *thr)
|
|||
/* Note that ptrace_lwpinfo returns the process command in pl_tdname
|
||||
if a name has not been set explicitly. Return a NULL name in
|
||||
that case. */
|
||||
fbsd_fetch_kinfo_proc (pid, &kp);
|
||||
if (!fbsd_fetch_kinfo_proc (pid, &kp))
|
||||
perror_with_name (_("Failed to fetch process information"));
|
||||
if (ptrace (PT_LWPINFO, lwp, (caddr_t) &pl, sizeof pl) == -1)
|
||||
perror_with_name (("ptrace"));
|
||||
if (strcmp (kp.ki_comm, pl.pl_tdname) == 0)
|
||||
|
|
@ -970,9 +1278,13 @@ fbsd_wait (struct target_ops *ops,
|
|||
#ifndef PTRACE_VFORK
|
||||
/* For vfork, the child process will have the P_PPWAIT
|
||||
flag set. */
|
||||
fbsd_fetch_kinfo_proc (child, &kp);
|
||||
if (kp.ki_flag & P_PPWAIT)
|
||||
ourstatus->kind = TARGET_WAITKIND_VFORKED;
|
||||
if (fbsd_fetch_kinfo_proc (child, &kp))
|
||||
{
|
||||
if (kp.ki_flag & P_PPWAIT)
|
||||
ourstatus->kind = TARGET_WAITKIND_VFORKED;
|
||||
}
|
||||
else
|
||||
warning (_("Failed to fetch process information"));
|
||||
#endif
|
||||
ourstatus->value.related_pid = child_ptid;
|
||||
|
||||
|
|
@ -1176,6 +1488,7 @@ fbsd_nat_add_target (struct target_ops *t)
|
|||
{
|
||||
t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
|
||||
t->to_find_memory_regions = fbsd_find_memory_regions;
|
||||
t->to_info_proc = fbsd_info_proc;
|
||||
#ifdef KERN_PROC_AUXV
|
||||
super_xfer_partial = t->to_xfer_partial;
|
||||
t->to_xfer_partial = fbsd_xfer_partial;
|
||||
|
|
|
|||
Loading…
Reference in New Issue