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/* Copyright (C) 2006 Henry Zhang
This file is part of LibGTop 2.14.
Contributed by Henry Zhang <hua.zhang@sun.com>, July 2006.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/procopenfiles.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <dirent.h>
#include <string.h>
#include <stdio.h>
#include "glibtop_private.h"
static const unsigned long _glibtop_sysdeps_proc_open_files =
(1L << GLIBTOP_PROC_OPEN_FILES_NUMBER)|
(1L << GLIBTOP_PROC_OPEN_FILES_TOTAL)|
(1L << GLIBTOP_PROC_OPEN_FILES_SIZE);
/* Init function. */
void
_glibtop_init_proc_open_files_s (glibtop *server)
{
server->sysdeps.proc_open_files = _glibtop_sysdeps_proc_open_files;
}
/* Provides detailed information about a process' open files */
glibtop_open_files_entry *
glibtop_get_proc_open_files_s (glibtop *server, glibtop_proc_open_files *buf, pid_t pid)
{
char filename [BUFSIZ];
GArray *entries;
struct dirent *direntry;
DIR *dir;
int errno;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_OPEN_FILES, 0);
memset (buf, 0, sizeof (glibtop_proc_open_files));
sprintf (filename, "/proc/%d/fd", pid);
dir = opendir (filename);
if (!dir) return NULL;
entries = g_array_new(FALSE, FALSE, sizeof(glibtop_open_files_entry));
while((direntry = readdir(dir))) {
char tgt [BUFSIZ];
int rv;
glibtop_open_files_entry entry = {0};
struct stat statbuf;
if(direntry->d_name[0] == '.')
continue;
if ((entry.fd = (int) g_ascii_strtoull(direntry->d_name, NULL, 10)) == 0)
continue;
/* from /path get object name */
g_snprintf(filename, sizeof filename, "/proc/%d/path/%s",
pid, direntry->d_name);
rv = readlink(filename, tgt, sizeof(tgt) - 1);
/* read object, if not have, set it as NULL, but this fd still need to insert into the array */
if(rv < 0)
rv = 0;
tgt[rv] = '\0';
/* from /fd get the stat data */
g_snprintf(filename, sizeof filename, "/proc/%d/fd/%s",
pid, direntry->d_name);
if(stat (filename, &statbuf))
statbuf.st_mode = 0;
switch (statbuf.st_mode & S_IFMT) {
case S_IFIFO: /* pipe */
entry.type = GLIBTOP_FILE_TYPE_PIPE;
break;
case S_IFSOCK: /* socket */
/* at solaris, now a little difficult to tell the Socket type, so here I
give the type 0, it will not impact the existed code. Later will provide
a patch to tell the type, and get the object name */
entry.type = 0;
break;
default:
entry.type = GLIBTOP_FILE_TYPE_FILE;
}
g_strlcpy(entry.info.file.name, tgt, sizeof entry.info.file.name);
g_array_append_val(entries, entry);
}
closedir (dir);
buf->flags = _glibtop_sysdeps_proc_open_files;
buf->number = entries->len;
buf->size = sizeof(glibtop_open_files_entry);
buf->total = buf->number * buf->size;
return (glibtop_open_files_entry*)g_array_free(entries, FALSE);
}
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