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/*
* Copyright (c) 2010 Aconex. All Rights Reserved.
* Copyright (c) 2000,2004 Silicon Graphics, Inc. All Rights Reserved.
*
* This program 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.
*
* This program 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.
*/
#include <sys/stat.h>
#include <sys/dir.h>
#include <ctype.h>
#include <fcntl.h>
#include "pmapi.h"
char *
get_ttyname_info(int pid, dev_t dev, char *ttyname)
{
DIR *dir;
struct dirent *dp;
struct stat sbuf;
int found=0;
char procpath[MAXPATHLEN];
char ttypath[MAXPATHLEN];
sprintf(procpath, "/proc/%d/fd", pid);
if ((dir = opendir(procpath)) != NULL) {
while ((dp = readdir(dir)) != NULL) {
if (!isdigit((int)dp->d_name[0]))
continue;
sprintf(procpath, "/proc/%d/fd/%s", pid, dp->d_name);
if (realpath(procpath, ttypath) == NULL || stat(ttypath, &sbuf) < 0)
continue;
if (S_ISCHR(sbuf.st_mode) && dev == sbuf.st_rdev) {
found=1;
break;
}
}
closedir(dir);
}
if (!found)
strcpy(ttyname, "?");
else
/* skip the "/dev/" prefix */
strcpy(ttyname, &ttypath[5]);
return ttyname;
}
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