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/* Linux-specific PROCFS manipulation routines.
Copyright (C) 2009-2012 Free Software Foundation, Inc.
This file is part of GDB.
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 3 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef GDBSERVER
#include "server.h"
#else
#include "defs.h"
#include "gdb_string.h"
#endif
#include "linux-procfs.h"
/* Return the TGID of LWPID from /proc/pid/status. Returns -1 if not
found. */
int
linux_proc_get_tgid (int lwpid)
{
FILE *status_file;
char buf[100];
int tgid = -1;
snprintf (buf, sizeof (buf), "/proc/%d/status", (int) lwpid);
status_file = fopen (buf, "r");
if (status_file != NULL)
{
while (fgets (buf, sizeof (buf), status_file))
{
if (strncmp (buf, "Tgid:", 5) == 0)
{
tgid = strtoul (buf + strlen ("Tgid:"), NULL, 10);
break;
}
}
fclose (status_file);
}
return tgid;
}
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