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Mon, 7 Apr 2025 01:29:03 GMT (envelope-from git) Date: Mon, 7 Apr 2025 01:29:03 GMT Message-Id: <202504070129.5371T3AK063013@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: e260058f33c9 - stable/14 - descriptors: add fget_remote_foreach() List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: e260058f33c93f9728879b7eaa893239bd4cf006 Auto-Submitted: auto-generated The branch stable/14 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=e260058f33c93f9728879b7eaa893239bd4cf006 commit e260058f33c93f9728879b7eaa893239bd4cf006 Author: Konstantin Belousov AuthorDate: 2025-03-18 02:10:03 +0000 Commit: Konstantin Belousov CommitDate: 2025-04-07 01:28:21 +0000 descriptors: add fget_remote_foreach() (cherry picked from commit 4b69f1fab66db4fd3f874e78a457e317cd498d36) --- sys/kern/kern_descrip.c | 41 +++++++++++++++++++++++++++++++++++++++++ sys/sys/file.h | 2 ++ 2 files changed, 43 insertions(+) diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index c21e34f7e805..7fa03e002ad7 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -2995,6 +2995,47 @@ fget_remote(struct thread *td, struct proc *p, int fd, struct file **fpp) return (error); } +int +fget_remote_foreach(struct thread *td, struct proc *p, + int (*fn)(struct proc *, int, struct file *, void *), void *arg) +{ + struct filedesc *fdp; + struct fdescenttbl *fdt; + struct file *fp; + int error, error1, fd, highfd; + + error = 0; + PROC_LOCK(p); + fdp = fdhold(p); + PROC_UNLOCK(p); + if (fdp == NULL) + return (ENOENT); + + FILEDESC_SLOCK(fdp); + if (refcount_load(&fdp->fd_refcnt) != 0) { + fdt = atomic_load_ptr(&fdp->fd_files); + highfd = fdt->fdt_nfiles - 1; + FILEDESC_SUNLOCK(fdp); + } else { + error = ENOENT; + FILEDESC_SUNLOCK(fdp); + goto out; + } + + for (fd = 0; fd <= highfd; fd++) { + error1 = fget_remote(td, p, fd, &fp); + if (error1 != 0) + continue; + error = fn(p, fd, fp, arg); + fdrop(fp, td); + if (error != 0) + break; + } +out: + fddrop(fdp); + return (error); +} + #ifdef CAPABILITIES int fgetvp_lookup_smr(struct nameidata *ndp, struct vnode **vpp, bool *fsearch) diff --git a/sys/sys/file.h b/sys/sys/file.h index da96f3e332fc..bef21d39e641 100644 --- a/sys/sys/file.h +++ b/sys/sys/file.h @@ -266,6 +266,8 @@ int fget_fcntl(struct thread *td, int fd, cap_rights_t *rightsp, int needfcntl, struct file **fpp); int _fdrop(struct file *fp, struct thread *td); int fget_remote(struct thread *td, struct proc *p, int fd, struct file **fpp); +int fget_remote_foreach(struct thread *td, struct proc *p, + int (*fn)(struct proc *, int, struct file *, void *), void *arg); fo_rdwr_t invfo_rdwr; fo_truncate_t invfo_truncate;