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Date: Mon, 18 Sep 2023 00:37:54 +0300 Message-ID: <20230917213803.20683-20-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230917213803.20683-1-kariem.taha2.7@gmail.com> References: <20230917213803.20683-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=kariem.taha2.7@gmail.com; helo=mail-wr1-x42e.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1694986959498100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Stacey Son Signed-off-by: Karim Taha Reviewed-by: Richard Henderson Reviewed-by: Warner Losh --- bsd-user/freebsd/meson.build | 1 + bsd-user/freebsd/os-proc.c | 80 ++++++++++++++++++++++++++++++++++++ 2 files changed, 81 insertions(+) create mode 100644 bsd-user/freebsd/os-proc.c diff --git a/bsd-user/freebsd/meson.build b/bsd-user/freebsd/meson.build index f2f047cca3..8fd6c7cfb8 100644 --- a/bsd-user/freebsd/meson.build +++ b/bsd-user/freebsd/meson.build @@ -1,5 +1,6 @@ bsd_user_ss.add(files( 'os-stat.c', + 'os-proc.c', 'os-sys.c', 'os-syscall.c', )) diff --git a/bsd-user/freebsd/os-proc.c b/bsd-user/freebsd/os-proc.c new file mode 100644 index 0000000000..cb35f29f10 --- /dev/null +++ b/bsd-user/freebsd/os-proc.c @@ -0,0 +1,80 @@ +/* + * FreeBSD process related emulation code + * + * Copyright (c) 2013-15 Stacey D. Son + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#include "qemu/osdep.h" + +#include +#include +#include +struct kinfo_proc; +#include + +#include "qemu.h" + +/* + * Get the filename for the given file descriptor. + * Note that this may return NULL (fail) if no longer cached in the kernel. + */ +static char * +get_filename_from_fd(pid_t pid, int fd, char *filename, size_t len) +{ + char *ret =3D NULL; + unsigned int cnt; + struct procstat *procstat =3D NULL; + struct kinfo_proc *kp =3D NULL; + struct filestat_list *head =3D NULL; + struct filestat *fst; + + procstat =3D procstat_open_sysctl(); + if (procstat =3D=3D NULL) { + goto out; + } + + kp =3D procstat_getprocs(procstat, KERN_PROC_PID, pid, &cnt); + if (kp =3D=3D NULL) { + goto out; + } + + head =3D procstat_getfiles(procstat, kp, 0); + if (head =3D=3D NULL) { + goto out; + } + + STAILQ_FOREACH(fst, head, next) { + if (fd =3D=3D fst->fs_fd) { + if (fst->fs_path !=3D NULL) { + (void)strlcpy(filename, fst->fs_path, len); + ret =3D filename; + } + break; + } + } + +out: + if (head !=3D NULL) { + procstat_freefiles(procstat, head); + } + if (kp !=3D NULL) { + procstat_freeprocs(procstat, kp); + } + if (procstat !=3D NULL) { + procstat_close(procstat); + } + return ret; +} + --=20 2.42.0