From: Stacey Son <s...@freebsd.org> Signed-off-by: Stacey Son <s...@freebsd.org> Signed-off-by: Karim Taha <kariem.taha...@gmail.com> --- bsd-user/freebsd/os-proc.c | 74 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 bsd-user/freebsd/os-proc.c
diff --git a/bsd-user/freebsd/os-proc.c b/bsd-user/freebsd/os-proc.c new file mode 100644 index 0000000000..5cd800e607 --- /dev/null +++ b/bsd-user/freebsd/os-proc.c @@ -0,0 +1,74 @@ +/* + * 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 <http://www.gnu.org/licenses/>. + */ +#include "qemu/osdep.h" + +#include <sys/param.h> +#include <sys/queue.h> +#include <sys/sysctl.h> +struct kinfo_proc; +#include <libprocstat.h> + +#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 = NULL; + unsigned int cnt; + struct procstat *procstat = NULL; + struct kinfo_proc *kp = NULL; + struct filestat_list *head = NULL; + struct filestat *fst; + + procstat = procstat_open_sysctl(); + if (procstat == NULL) + goto out; + + kp = procstat_getprocs(procstat, KERN_PROC_PID, pid, &cnt); + if (kp == NULL) + goto out; + + head = procstat_getfiles(procstat, kp, 0); + if (head == NULL) + goto out; + + STAILQ_FOREACH(fst, head, next) { + if (fd == fst->fs_fd) { + if (fst->fs_path != NULL) { + (void)strlcpy(filename, fst->fs_path, len); + ret = filename; + } + break; + } + } + +out: + if (head != NULL) + procstat_freefiles(procstat, head); + if (kp != NULL) + procstat_freeprocs(procstat, kp); + if (procstat != NULL) + procstat_close(procstat); + return ret; +} + -- 2.40.0
