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/* Copyright (C) 2007 Joe Marcus Clarke
This file is part of LibGTop 2.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop/procwd.h>
#include <glibtop/error.h>
#include <glibtop_private.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/param.h>
#include <sys/user.h>
#ifdef HAVE_KINFO_GETFILE
#include <libutil.h>
#endif
#include <string.h>
static const unsigned long _glibtop_sysdeps_proc_wd =
(1 << GLIBTOP_PROC_WD_EXE) |
(1 << GLIBTOP_PROC_WD_ROOT) |
(1 << GLIBTOP_PROC_WD_NUMBER);
void
_glibtop_init_proc_wd_s(glibtop *server)
{
server->sysdeps.proc_wd = _glibtop_sysdeps_proc_wd;
}
#if (__FreeBSD_version >= 800000 && __FreeBSD_version < 800019) || __FreeBSD_version < 700104
static GPtrArray *
parse_output(const char *output, glibtop_proc_wd *buf)
{
GPtrArray *dirs;
char **lines;
gboolean nextwd = FALSE;
gboolean nextrtd = FALSE;
gboolean havertd = FALSE;
guint i;
guint len;
dirs = g_ptr_array_sized_new(1);
lines = g_strsplit(output, "\n", 0);
len = g_strv_length(lines);
for (i = 0; i < len && lines[i]; i++) {
if (strlen(lines[i]) < 2)
continue;
if (!strcmp(lines[i], "fcwd")) {
nextwd = TRUE;
continue;
}
if (!strcmp(lines[i], "frtd")) {
nextrtd = TRUE;
continue;
}
if (!g_str_has_prefix(lines[i], "n"))
continue;
if (nextwd) {
g_ptr_array_add(dirs, g_strdup(lines[i] + 1));
nextwd = FALSE;
}
if (nextrtd && !havertd) {
g_strlcpy(buf->root, lines[i] + 1,
sizeof(buf->root));
buf->flags |= (1 << GLIBTOP_PROC_WD_ROOT);
nextrtd = FALSE;
havertd = TRUE;
}
}
g_strfreev(lines);
return dirs;
}
#endif
char**
glibtop_get_proc_wd_s(glibtop *server, glibtop_proc_wd *buf, pid_t pid)
{
int exe_mib[4];
size_t len;
#if __FreeBSD_version > 800018 || (__FreeBSD_version < 800000 && __FreeBSD_version >= 700104)
struct kinfo_file *freep, *kif;
GPtrArray *dirs;
#ifndef HAVE_KINFO_GETFILE
int name[4];
#else
int cnt;
#endif
int i;
#else
char *output;
#endif
memset (buf, 0, sizeof (glibtop_proc_wd));
len = 0;
exe_mib[0] = CTL_KERN;
exe_mib[1] = KERN_PROC;
exe_mib[2] = KERN_PROC_PATHNAME;
exe_mib[3] = pid;
if (sysctl(exe_mib, 4, NULL, &len, NULL, 0) == 0) {
if (len > sizeof(buf->exe))
len = sizeof(buf->exe);
if (sysctl(exe_mib, 4, buf->exe, &len, NULL, 0) == 0)
buf->flags |= (1 << GLIBTOP_PROC_WD_EXE);
}
#if __FreeBSD_version > 800018 || (__FreeBSD_version < 800000 && __FreeBSD_version >= 700104)
#ifndef HAVE_KINFO_GETFILE
len = 0;
name[0] = CTL_KERN;
name[1] = KERN_PROC;
name[2] = KERN_PROC_FILEDESC;
name[3] = pid;
if (sysctl(name, 4, NULL, &len, NULL, 0) < 0)
return NULL;
freep = kif = g_malloc(len);
if (sysctl(name, 4, kif, &len, NULL, 0) < 0) {
g_free(freep);
return NULL;
}
#else
freep = kinfo_getfile(pid, &cnt);
#endif
dirs = g_ptr_array_sized_new(1);
#ifndef HAVE_KINFO_GETFILE
for (i = 0; i < len / sizeof(*kif); i++, kif++) {
if (kif->kf_structsize != sizeof(*kif))
continue;
#else
for (i = 0; i < cnt; i++) {
kif = &freep[i];
#endif
switch (kif->kf_fd) {
case KF_FD_TYPE_ROOT:
g_strlcpy(buf->root, kif->kf_path,
sizeof(buf->root));
buf->flags |= (1 << GLIBTOP_PROC_WD_ROOT);
break;
case KF_FD_TYPE_CWD:
g_ptr_array_add(dirs, g_strdup (kif->kf_path));
break;
}
}
g_free(freep);
buf->number = dirs->len;
buf->flags |= (1 << GLIBTOP_PROC_WD_NUMBER);
g_ptr_array_add(dirs, NULL);
return (char **)g_ptr_array_free(dirs, FALSE);
#else
output = execute_lsof(pid);
if (output != NULL) {
GPtrArray *dirs;
dirs = parse_output(output, buf);
g_free(output);
buf->number = dirs->len;
buf->flags |= (1 << GLIBTOP_PROC_WD_NUMBER);
g_ptr_array_add(dirs, NULL);
return (char **)g_ptr_array_free(dirs, FALSE);
}
#endif
return NULL;
}
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