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Differential D20575 Diff 58447 sys/fs/pseudofs/pseudofs_vnops.c

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sys/fs/pseudofs/pseudofs_vnops.c

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#define KASSERT_PN_IS_FILE(pn) \ #define KASSERT_PN_IS_FILE(pn) \
KASSERT((pn)->pn_type == pfstype_file, \ KASSERT((pn)->pn_type == pfstype_file, \
("%s(): VREG vnode refers to non-file pfs_node", __func__)) ("%s(): VREG vnode refers to non-file pfs_node", __func__))
#define KASSERT_PN_IS_LINK(pn) \ #define KASSERT_PN_IS_LINK(pn) \
KASSERT((pn)->pn_type == pfstype_symlink, \ KASSERT((pn)->pn_type == pfstype_symlink, \
("%s(): VLNK vnode refers to non-link pfs_node", __func__)) ("%s(): VLNK vnode refers to non-link pfs_node", __func__))
static int pfs_bufsiz = MAXPHYS;
static int
sysctl_pfs_bufsiz(SYSCTL_HANDLER_ARGS)
{
int error, limit;
limit = pfs_bufsiz;
error = sysctl_handle_int(oidp, &limit, 0, req);
if (error || !req->newptr)
return (error);
if (limit < 1 || limit > IOSIZE_MAX)
return (EINVAL);
pfs_bufsiz = limit;
return (0);
}
SYSCTL_PROC(_vfs_pfs, OID_AUTO, bufsiz, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_pfs_bufsiz, "I",
"storage buffer size");
/* /*
* Returns the fileno, adjusted for target pid * Returns the fileno, adjusted for target pid
*/ */
static uint32_t static uint32_t
pn_fileno(struct pfs_node *pn, pid_t pid) pn_fileno(struct pfs_node *pn, pid_t pid)
{ {
KASSERT(pn->pn_fileno > 0, KASSERT(pn->pn_fileno > 0,
▲ Show 20 Lines • Show All 579 Lines • ▼ Show 20 Linespfs_read(struct vop_read_args *va)
} }
if (uio->uio_resid < 0 || uio->uio_offset < 0 || if (uio->uio_resid < 0 || uio->uio_offset < 0 ||
uio->uio_resid > OFF_MAX - uio->uio_offset) { uio->uio_resid > OFF_MAX - uio->uio_offset) {
error = EINVAL; error = EINVAL;
goto ret; goto ret;
} }
buflen = uio->uio_offset + uio->uio_resid; buflen = uio->uio_offset + uio->uio_resid;
if (buflen > MAXPHYS) if (buflen > pfs_bufsiz)
buflen = MAXPHYS; buflen = pfs_bufsiz;
sb = sbuf_new(sb, NULL, buflen + 1, 0); sb = sbuf_new(sb, NULL, buflen + 1, 0);
if (sb == NULL) { if (sb == NULL) {
error = EIO; error = EIO;
goto ret; goto ret;
} }
error = pn_fill(curthread, proc, pn, sb, uio); error = pn_fill(curthread, proc, pn, sb, uio);
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