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Add vn_rlimit_trunc()

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Reviewed by:	asomers, jah, markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D36625
This commit is contained in:
Konstantin Belousov 2022-09-18 22:52:13 +03:00
parent cc65a412ae
commit 2ac083f60f
2 changed files with 20 additions and 5 deletions
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24
sys/kern/vfs_vnops.c
View File

@ -2372,6 +2372,23 @@ vn_vget_ino_gen(struct vnode *vp, vn_get_ino_t alloc, void *alloc_arg,
return (error);
}
static void
vn_send_sigxfsz(struct proc *p)
{
PROC_LOCK(p);
kern_psignal(p, SIGXFSZ);
PROC_UNLOCK(p);
}
int
vn_rlimit_trunc(u_quad_t size, struct thread *td)
{
if (size <= lim_cur(td, RLIMIT_FSIZE))
return (0);
vn_send_sigxfsz(td->td_proc);
return (EFBIG);
}
int
vn_rlimit_fsize(const struct vnode *vp, const struct uio *uio,
struct thread *td)
@ -2400,11 +2417,8 @@ vn_rlimit_fsize(const struct vnode *vp, const struct uio *uio,
(td->td_pflags2 & TDP2_ACCT) != 0)
return (0);
if (!ktr_write || ktr_filesize_limit_signal) {
PROC_LOCK(td->td_proc);
kern_psignal(td->td_proc, SIGXFSZ);
PROC_UNLOCK(td->td_proc);
}
if (!ktr_write || ktr_filesize_limit_signal)
vn_send_sigxfsz(td->td_proc);
return (EFBIG);
}

1
sys/sys/vnode.h
View File

@ -786,6 +786,7 @@ int vn_rdwr_inchunks(enum uio_rw rw, struct vnode *vp, void *base,
int vn_read_from_obj(struct vnode *vp, struct uio *uio);
int vn_rlimit_fsize(const struct vnode *vp, const struct uio *uio,
struct thread *td);
int vn_rlimit_trunc(u_quad_t size, struct thread *td);
int vn_start_write(struct vnode *vp, struct mount **mpp, int flags);
int vn_start_secondary_write(struct vnode *vp, struct mount **mpp,
int flags);