157 lines
3.6 KiB
C
157 lines
3.6 KiB
C
/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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Copyright (C) 2004 Nicolás Lichtmaier
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This file is part of LibGTop 1.0.
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Modified by Nicolás Lichtmaier to give a process open files.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/procopenfiles.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <string.h>
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#include <stdio.h>
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#include <arpa/inet.h>
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#include "glibtop_private.h"
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static const unsigned long _glibtop_sysdeps_proc_open_files =
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(1L << GLIBTOP_PROC_OPEN_FILES_NUMBER)|
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(1L << GLIBTOP_PROC_OPEN_FILES_TOTAL)|
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(1L << GLIBTOP_PROC_OPEN_FILES_SIZE);
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/* Init function. */
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void
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glibtop_init_proc_open_files_s (glibtop *server)
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{
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server->sysdeps.proc_open_files = _glibtop_sysdeps_proc_open_files;
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}
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static void
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get_socket_endpoint(char *buf, int *prmtport, int s)
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{
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FILE *f;
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char line[1024];
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buf[0] = '\0';
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*prmtport = 0;
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f = fopen("/proc/net/tcp", "r");
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if(!f)
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return;
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if(!fgets(line, sizeof line, f)) goto eof;
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while(fgets(line, sizeof line, f))
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{
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unsigned int rmt;
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int sock = -42;
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sscanf(line, "%*d: %*x:%*x %8x:%4x %*x %*x:%*x %*x:%*x %*d %*d %*d %d",
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&rmt, prmtport, &sock);
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if(sock == s)
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{
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inet_ntop(AF_INET, &rmt, buf, GLIBTOP_OPEN_DEST_HOST_LEN);
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break;
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}
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}
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eof:
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fclose(f);
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}
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/* Provides detailed information about a process' open files */
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glibtop_open_files_entry *
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glibtop_get_proc_open_files_s (glibtop *server, glibtop_proc_open_files *buf, pid_t pid)
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{
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char fn [BUFSIZ];
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GArray *entries;
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struct dirent *direntry;
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int rv;
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DIR *dir;
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glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_OPEN_FILES, 0);
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memset (buf, 0, sizeof (glibtop_proc_open_files));
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sprintf (fn, "/proc/%d/fd", pid);
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dir = opendir (fn);
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if (!dir) return NULL;
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entries = g_array_new(FALSE, FALSE, sizeof(glibtop_open_files_entry));
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while((direntry = readdir(dir))) {
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char tgt [BUFSIZ];
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glibtop_open_files_entry entry = {0};
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if(direntry->d_name[0] == '.')
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continue;
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g_snprintf(fn, sizeof fn, "/proc/%d/fd/%s",
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pid, direntry->d_name);
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rv = readlink(fn, tgt, sizeof(tgt) - 1);
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if(rv < 0) continue;
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tgt[rv] = '\0';
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entry.fd = atoi(direntry->d_name);
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if(g_str_has_prefix(tgt, "socket:["))
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{
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int sockfd;
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entry.type = GLIBTOP_FILE_TYPE_INETSOCKET;
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sockfd = atoi(tgt + 8);
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get_socket_endpoint(entry.info.sock.dest_host,
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&(entry.info.sock.dest_port),
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sockfd);
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}
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else if(g_str_has_prefix(tgt, "pipe:["))
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{
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entry.type = GLIBTOP_FILE_TYPE_PIPE;
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}
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else
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{
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entry.type = GLIBTOP_FILE_TYPE_FILE;
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g_strlcpy(entry.info.file.name, tgt, sizeof entry.info.file.name);
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}
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g_array_append_val(entries, entry);
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}
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closedir (dir);
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buf->flags = _glibtop_sysdeps_proc_open_files;
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buf->number = entries->len;
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buf->size = sizeof(glibtop_open_files_entry);
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buf->total = buf->number * buf->size;
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return (glibtop_open_files_entry*)g_array_free(entries, FALSE);
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}
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