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| author | Dmitry Chagin <dchagin@FreeBSD.org> | 2021-05-31 19:15:02 +0000 |
|---|---|---|
| committer | Dmitry Chagin <dchagin@FreeBSD.org> | 2021-05-31 19:15:02 +0000 |
| commit | a06c12464bb49750c6b113c971e2770408ce422a (patch) | |
| tree | dcbb082c7d774f4114429397a9de27af7c016dae | |
| parent | 19593f775c23623571cac4cf638996f5c11e91f4 (diff) | |
| download | src-a06c12464bb49750c6b113c971e2770408ce422a.tar.gz src-a06c12464bb49750c6b113c971e2770408ce422a.zip | |
linux(4): Add F_GETPIPE_SZ fcntl operation which returns the capacity
of the pipe referred by fd.
Differential Revision: https://reviews.freebsd.org/D30517
MFC after: 2 weeks
| -rw-r--r-- | sys/compat/linux/linux_file.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c index 0549d536ba51..a6cf467d6219 100644 --- a/sys/compat/linux/linux_file.c +++ b/sys/compat/linux/linux_file.c @@ -45,6 +45,8 @@ __FBSDID("$FreeBSD$"); #include <sys/mount.h> #include <sys/mutex.h> #include <sys/namei.h> +#include <sys/selinfo.h> +#include <sys/pipe.h> #include <sys/proc.h> #include <sys/stat.h> #include <sys/sx.h> @@ -1524,6 +1526,7 @@ fcntl_common(struct thread *td, struct linux_fcntl_args *args) { struct l_flock linux_flock; struct flock bsd_flock; + struct pipe *fpipe; struct file *fp; long arg; int error, result; @@ -1655,6 +1658,21 @@ fcntl_common(struct thread *td, struct linux_fcntl_args *args) case LINUX_F_ADD_SEALS: return (kern_fcntl(td, args->fd, F_ADD_SEALS, linux_to_bsd_bits(args->arg, seal_bitmap, 0))); + + case LINUX_F_GETPIPE_SZ: + error = fget(td, args->fd, + &cap_fcntl_rights, &fp); + if (error != 0) + return (error); + if (fp->f_type != DTYPE_PIPE) { + fdrop(fp, td); + return (EINVAL); + } + fpipe = fp->f_data; + td->td_retval[0] = fpipe->pipe_buffer.size; + fdrop(fp, td); + return (0); + default: linux_msg(td, "unsupported fcntl cmd %d", args->cmd); return (EINVAL); |