diff options
| author | Mateusz Guzik <mjg@FreeBSD.org> | 2015-06-10 10:48:12 +0000 |
|---|---|---|
| committer | Mateusz Guzik <mjg@FreeBSD.org> | 2015-06-10 10:48:12 +0000 |
| commit | f6f6d24062224a443ecd5e3945cf25127ee819fe (patch) | |
| tree | dbbb077ee034cbfe839c1ba19dbe5ce374a5c6a3 /sys/kern/vfs_vnops.c | |
| parent | 4ea6a9a28fd7ae3cc6e8697bc93f9ce5ea6b6262 (diff) | |
| download | src-f6f6d24062224a443ecd5e3945cf25127ee819fe.tar.gz src-f6f6d24062224a443ecd5e3945cf25127ee819fe.zip | |
Implement lockless resource limits.
Use the same scheme implemented to manage credentials.
Code needing to look at process's credentials (as opposed to thred's) is
provided with *_proc variants of relevant functions.
Places which possibly had to take the proc lock anyway still use the proc
pointer to access limits.
Notes
Notes:
svn path=/head/; revision=284215
Diffstat (limited to 'sys/kern/vfs_vnops.c')
| -rw-r--r-- | sys/kern/vfs_vnops.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c index 573d00941988..0b073b9cf110 100644 --- a/sys/kern/vfs_vnops.c +++ b/sys/kern/vfs_vnops.c @@ -2106,19 +2106,18 @@ vn_vget_ino_gen(struct vnode *vp, vn_get_ino_t alloc, void *alloc_arg, int vn_rlimit_fsize(const struct vnode *vp, const struct uio *uio, - const struct thread *td) + struct thread *td) { if (vp->v_type != VREG || td == NULL) return (0); - PROC_LOCK(td->td_proc); if ((uoff_t)uio->uio_offset + uio->uio_resid > - lim_cur(td->td_proc, RLIMIT_FSIZE)) { + lim_cur(td, RLIMIT_FSIZE)) { + PROC_LOCK(td->td_proc); kern_psignal(td->td_proc, SIGXFSZ); PROC_UNLOCK(td->td_proc); return (EFBIG); } - PROC_UNLOCK(td->td_proc); return (0); } |