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faefc269c3
Symlinking doesn't work due to some shell tricks used in Makefiles to extract info out of the current work directory.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/***********************************************************************
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*
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* Copyright (c) 2019 Broadcom Ltd
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* All Rights Reserved
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*
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<:label-BRCM:2019:DUAL/GPL:standard
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Unless you and Broadcom execute a separate written software license
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agreement governing use of this software, this software is licensed
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to you under the terms of the GNU General Public License version 2
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(the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
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with the following added to such license:
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As a special exception, the copyright holders of this software give
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you permission to link this software with independent modules, and
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to copy and distribute the resulting executable under terms of your
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choice, provided that you also meet, for each linked independent
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module, the terms and conditions of the license of that module.
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An independent module is a module which is not derived from this
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software. The special exception does not apply to any modifications
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of the software.
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Not withstanding the above, under no circumstances may you combine
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this software in any way with any other Broadcom software provided
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under a license other than the GPL, without Broadcom's express prior
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written consent.
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:>
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*
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************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <dirent.h>
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#include "sysutil_proc.h"
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int sysUtl_getThreadInfoFromProc(int tid, ProcThreadInfo *info)
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{
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FILE *fp;
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char filename[256]={0};
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int c, rval=-2;
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int pid=0; // unused
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// Since we have to use the magic number of 63 below, check the #define
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// has not changed.
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if (PROC_THREAD_NAME_LEN != 64)
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{
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printf("%s: must fix code to match PROC_THREAD_NAME_LEN (%d != 64)",
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__FUNCTION__, PROC_THREAD_NAME_LEN);
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return -2;
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}
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if (info == NULL)
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{
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return -2;
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}
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memset(info, 0, sizeof(ProcThreadInfo));
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snprintf(filename, sizeof(filename), "/proc/%d/stat", tid);
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if ((fp = fopen(filename, "r")) == NULL)
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{
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/* this pid/tid does not exist */
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return -1;
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}
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// Read at most PROC_THREAD_NAME_LEN-1 (63) chars into name buffer.
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c = fscanf(fp, "%d (%63s %c", &pid, info->name, &(info->status));
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if (c == 3 && strlen(info->name) > 1)
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{
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// trim closing parenthesis from name.
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info->name[strlen(info->name)-1] = '\0';
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rval = 0;
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}
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else
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{
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printf("%s: could not parse %s\n", __FUNCTION__, filename);
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rval = -2;
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}
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fclose(fp);
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return rval;
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}
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