95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
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* lsfd-pidfd.c - handle pidfd (from anon_inode or pidfs)
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*
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* Copyright (C) 2024 Xi Ruoyao <xry111@xry111.site>
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*
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* Refactored and moved out from lsfd-unkn.c (originally authored by
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* Masatake YAMATO <yamato@redhat.com>).
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*
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* This program is free software; you can redistribute it and/or modify
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* it 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, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <string.h>
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#include "strutils.h"
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#include "xalloc.h"
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#include "lsfd.h"
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#include "pidfd.h"
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int pidfd_handle_fdinfo(struct pidfd_data *data, const char *key,
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const char *value)
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{
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if (strcmp(key, "Pid") == 0) {
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uint64_t pid;
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int rc = ul_strtou64(value, &pid, 10);
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if (rc < 0)
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return 0; /* ignore -- parse failed */
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data->pid = (pid_t)pid;
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return 1;
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} else if (strcmp(key, "NSpid") == 0) {
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data->nspid = xstrdup(value);
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return 1;
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}
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return 0;
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}
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char *pidfd_get_name(struct pidfd_data *data)
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{
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char *str = NULL;
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char *comm = NULL;
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struct proc *proc = get_proc(data->pid);
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if (proc)
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comm = proc->command;
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xasprintf(&str, "pid=%d comm=%s nspid=%s",
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data->pid,
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comm ? comm : "",
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data->nspid ? data->nspid : "");
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return str;
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}
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bool pidfd_fill_column(struct pidfd_data *data, int column_id, char **str)
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{
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switch(column_id) {
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case COL_PIDFD_COMM: {
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struct proc *pidfd_proc = get_proc(data->pid);
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char *pidfd_comm = NULL;
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if (pidfd_proc)
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pidfd_comm = pidfd_proc->command;
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if (pidfd_comm) {
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*str = xstrdup(pidfd_comm);
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return true;
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}
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break;
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}
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case COL_PIDFD_NSPID:
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if (data->nspid) {
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*str = xstrdup(data->nspid);
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return true;
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}
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break;
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case COL_PIDFD_PID:
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xasprintf(str, "%d", (int)data->pid);
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return true;
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}
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return false;
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}
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