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Fix found places where uio_resid is truncated to int.

Browse Source 
Add the sysctl debug.iosize_max_clamp, enabled by default. Setting the
sysctl to zero allows to perform the SSIZE_MAX-sized i/o requests from
the usermode.

Discussed with:	bde, das (previous versions)
MFC after:	1 month
This commit is contained in:
Konstantin Belousov 2012-02-21 01:05:12 +00:00
parent 57a82ba4d9
commit 526d0bd547
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=231949
33 changed files with 132 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/cddl/compat/opensolaris/sys/vnode.h
View File

@ -223,7 +223,8 @@ zfs_vn_rdwr(enum uio_rw rw, vnode_t *vp, caddr_t base, ssize_t len,
ssize_t *residp)
{
struct thread *td = curthread;
int error, vfslocked, resid;
int error, vfslocked;
ssize_t resid;
ASSERT(ioflag == 0);
ASSERT(ulimit == RLIM64_INFINITY);

3
sys/compat/ndis/subr_ndis.c
View File

@ -2862,7 +2862,8 @@ NdisMapFile(status, mappedbuffer, filehandle)
struct thread *td = curthread;
linker_file_t lf;
caddr_t kldstart;
int error, resid, vfslocked;
int error, vfslocked;
ssize_t resid;
struct vnode *vp;
if (filehandle == NULL) {

4
sys/fs/cd9660/cd9660_vnops.c
View File

@ -318,7 +318,7 @@ cd9660_read(ap)
do {
lbn = lblkno(imp, uio->uio_offset);
on = blkoff(imp, uio->uio_offset);
n = min((u_int)(imp->logical_block_size - on),
n = MIN((u_int)(imp->logical_block_size - on),
uio->uio_resid);
diff = (off_t)ip->i_size - uio->uio_offset;
if (diff <= 0)
@ -343,7 +343,7 @@ cd9660_read(ap)
} else
error = bread(vp, lbn, size, NOCRED, &bp);
}
n = min(n, size - bp->b_resid);
n = MIN(n, size - bp->b_resid);
if (error) {
brelse(bp);
return (error);

6
sys/fs/devfs/devfs_vnops.c
View File

@ -1156,7 +1156,8 @@ static int
devfs_read_f(struct file *fp, struct uio *uio, struct ucred *cred, int flags, struct thread *td)
{
struct cdev *dev;
int ioflag, error, ref, resid;
int ioflag, error, ref;
ssize_t resid;
struct cdevsw *dsw;
struct file *fpop;
@ -1634,7 +1635,8 @@ static int
devfs_write_f(struct file *fp, struct uio *uio, struct ucred *cred, int flags, struct thread *td)
{
struct cdev *dev;
int error, ioflag, ref, resid;
int error, ioflag, ref;
ssize_t resid;
struct cdevsw *dsw;
struct file *fpop;

3
sys/fs/ext2fs/ext2_lookup.c
View File

@ -1001,7 +1001,8 @@ ext2_dirempty(ip, parentino, cred)
off_t off;
struct dirtemplate dbuf;
struct ext2fs_direct_2 *dp = (struct ext2fs_direct_2 *)&dbuf;
int error, count, namlen;
int error, namlen;
ssize_t count;
#define MINDIRSIZ (sizeof(struct dirtemplate) / 2)
for (off = 0; off < ip->i_size; off += dp->e2d_reclen) {

4
sys/fs/msdosfs/msdosfs_vnops.c
View File

@ -543,7 +543,7 @@ msdosfs_read(ap)
int error = 0;
int blsize;
int isadir;
int orig_resid;
ssize_t orig_resid;
u_int n;
u_long diff;
u_long on;
@ -643,7 +643,7 @@ msdosfs_write(ap)
{
int n;
int croffset;
int resid;
ssize_t resid;
u_long osize;
int error = 0;
u_long count;

16
sys/fs/nfsclient/nfs_clbio.c
View File

@ -570,7 +570,7 @@ ncl_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
n = 0;
if (on < bcount)
n = min((unsigned)(bcount - on), uio->uio_resid);
n = MIN((unsigned)(bcount - on), uio->uio_resid);
break;
case VLNK:
NFSINCRGLOBAL(newnfsstats.biocache_readlinks);
@ -589,7 +589,7 @@ ncl_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
return (error);
}
}
n = min(uio->uio_resid, NFS_MAXPATHLEN - bp->b_resid);
n = MIN(uio->uio_resid, NFS_MAXPATHLEN - bp->b_resid);
on = 0;
break;
case VDIR:
@ -757,8 +757,8 @@ nfs_directio_write(vp, uiop, cred, ioflag)
struct iovec iov;
do_sync:
while (uiop->uio_resid > 0) {
size = min(uiop->uio_resid, wsize);
size = min(uiop->uio_iov->iov_len, size);
size = MIN(uiop->uio_resid, wsize);
size = MIN(uiop->uio_iov->iov_len, size);
iov.iov_base = uiop->uio_iov->iov_base;
iov.iov_len = size;
uio.uio_iov = &iov;
@ -806,8 +806,8 @@ nfs_directio_write(vp, uiop, cred, ioflag)
* in NFS directio access.
*/
while (uiop->uio_resid > 0) {
size = min(uiop->uio_resid, wsize);
size = min(uiop->uio_iov->iov_len, size);
size = MIN(uiop->uio_resid, wsize);
size = MIN(uiop->uio_iov->iov_len, size);
bp = getpbuf(&ncl_pbuf_freecnt);
t_uio = malloc(sizeof(struct uio), M_NFSDIRECTIO, M_WAITOK);
t_iov = malloc(sizeof(struct iovec), M_NFSDIRECTIO, M_WAITOK);
@ -1023,7 +1023,7 @@ ncl_write(struct vop_write_args *ap)
NFSINCRGLOBAL(newnfsstats.biocache_writes);
lbn = uio->uio_offset / biosize;
on = uio->uio_offset & (biosize-1);
n = min((unsigned)(biosize - on), uio->uio_resid);
n = MIN((unsigned)(biosize - on), uio->uio_resid);
again:
/*
* Handle direct append and file extension cases, calculate
@ -1572,7 +1572,7 @@ ncl_doio(struct vnode *vp, struct buf *bp, struct ucred *cr, struct thread *td,
* writes, but that is not possible any longer.
*/
int nread = bp->b_bcount - uiop->uio_resid;
int left = uiop->uio_resid;
ssize_t left = uiop->uio_resid;
if (left > 0)
bzero((char *)bp->b_data + nread, left);

3
sys/fs/nfsclient/nfs_clvnops.c
View File

@ -2177,7 +2177,8 @@ nfs_readdir(struct vop_readdir_args *ap)
struct vnode *vp = ap->a_vp;
struct nfsnode *np = VTONFS(vp);
struct uio *uio = ap->a_uio;
int tresid, error = 0;
ssize_t tresid;
int error = 0;
struct vattr vattr;
if (vp->v_type != VDIR)

2
sys/fs/nfsserver/nfs_nfsdstate.c
View File

@ -3962,7 +3962,7 @@ nfsrv_setupstable(NFSPROC_T *p)
struct nfst_rec *tsp;
int error, i, tryagain;
off_t off = 0;
int aresid, len;
ssize_t aresid, len;
struct timeval curtime;
/*

3
sys/fs/pseudofs/pseudofs_vnops.c
View File

@ -589,7 +589,8 @@ pfs_read(struct vop_read_args *va)
struct proc *proc;
struct sbuf *sb = NULL;
int error, locked;
unsigned int buflen, offset, resid;
off_t offset;
ssize_t buflen, resid;
PFS_TRACE(("%s", pn->pn_name));
pfs_assert_not_owned(pn);

3
sys/fs/udf/udf_vnops.c
View File

@ -439,8 +439,9 @@ udf_read(struct vop_read_args *ap)
uint8_t *data;
daddr_t lbn, rablock;
off_t diff, fsize;
ssize_t n;
int error = 0;
long size, n, on;
long size, on;
if (uio->uio_resid == 0)
return (0);

2
sys/kern/kern_ctf.c
View File

@ -68,7 +68,7 @@ link_elf_ctf_get(linker_file_t lf, linker_ctf_t *lc)
int flags;
int i;
int nbytes;
int resid;
ssize_t resid;
int vfslocked;
size_t sz;
struct nameidata nd;

4
sys/kern/kern_gzio.c
View File

@ -97,7 +97,7 @@ gzFile gz_open (path, mode, vp)
gz_stream *s;
char fmode[80]; /* copy of mode, without the compression level */
char *m = fmode;
int resid;
ssize_t resid;
int error;
char buf[GZ_HEADER_LEN + 1];
@ -342,7 +342,7 @@ local void putU32 (s, x)
{
uint32_t xx;
off_t curoff = s->outoff;
int resid;
ssize_t resid;
#if BYTE_ORDER == BIG_ENDIAN
xx = bswap32(x);

2
sys/kern/kern_ktrace.c
View File

@ -684,7 +684,7 @@ ktrgenio(fd, rw, uio, error)
}
uio->uio_offset = 0;
uio->uio_rw = UIO_WRITE;
datalen = imin(uio->uio_resid, ktr_geniosize);
datalen = MIN(uio->uio_resid, ktr_geniosize);
buf = malloc(datalen, M_KTRACE, M_WAITOK);
error = uiomove(buf, datalen, uio);
free(uio, M_IOV);

5
sys/kern/kern_linker.c
View File

@ -1748,7 +1748,8 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
struct vattr vattr, mattr;
u_char *hints = NULL;
u_char *cp, *recptr, *bufend, *result, *best, *pathbuf, *sep;
int error, ival, bestver, *intp, reclen, found, flags, clen, blen;
int error, ival, bestver, *intp, found, flags, clen, blen;
ssize_t reclen;
int vfslocked = 0;
result = NULL;
@ -1793,7 +1794,7 @@ linker_hints_lookup(const char *path, int pathlen, const char *modname,
VFS_UNLOCK_GIANT(vfslocked);
nd.ni_vp = NULL;
if (reclen != 0) {
printf("can't read %d\n", reclen);
printf("can't read %zd\n", reclen);
goto bad;
}
intp = (int *)hints;

3
sys/kern/link_elf.c
View File

@ -655,7 +655,8 @@ link_elf_load_file(linker_class_t cls, const char* filename,
Elf_Addr base_vaddr;
Elf_Addr base_vlimit;
int error = 0;
int resid, flags;
ssize_t resid;
int flags;
elf_file_t ef;
linker_file_t lf;
Elf_Shdr *shdr;

3
sys/kern/link_elf_obj.c
View File

@ -440,7 +440,8 @@ link_elf_load_file(linker_class_t cls, const char *filename,
vm_offset_t mapbase;
size_t mapsize;
int error = 0;
int resid, flags;
ssize_t resid;
int flags;
elf_file_t ef;
linker_file_t lf;
int symtabindex;

8
sys/kern/subr_uio.c
View File

@ -171,7 +171,7 @@ uiomove_faultflag(void *cp, int n, struct uio *uio, int nofault)
{
struct thread *td;
struct iovec *iov;
u_int cnt;
size_t cnt;
int error, newflags, save;
td = curthread;
@ -245,14 +245,14 @@ uiomove_faultflag(void *cp, int n, struct uio *uio, int nofault)
int
uiomove_frombuf(void *buf, int buflen, struct uio *uio)
{
unsigned int offset, n;
size_t offset, n;
if (uio->uio_offset < 0 || uio->uio_resid < 0 ||
(offset = uio->uio_offset) != uio->uio_offset)
return (EINVAL);
if (buflen <= 0 || offset >= buflen)
return (0);
if ((n = buflen - offset) > INT_MAX)
if ((n = buflen - offset) > IOSIZE_MAX)
return (EINVAL);
return (uiomove((char *)buf + offset, n, uio));
}
@ -479,7 +479,7 @@ copyinuio(const struct iovec *iovp, u_int iovcnt, struct uio **uiop)
uio->uio_offset = -1;
uio->uio_resid = 0;
for (i = 0; i < iovcnt; i++) {
if (iov->iov_len > INT_MAX - uio->uio_resid) {
if (iov->iov_len > IOSIZE_MAX - uio->uio_resid) {
free(uio, M_IOV);
return (EINVAL);
}

22
sys/kern/sys_generic.c
View File

@ -74,6 +74,10 @@ __FBSDID("$FreeBSD$");
#include <security/audit/audit.h>
int iosize_max_clamp = 1;
SYSCTL_INT(_debug, OID_AUTO, iosize_max_clamp, CTLFLAG_RW, &iosize_max_clamp, 0,
"Clamp max i/o size to INT_MAX");
static MALLOC_DEFINE(M_IOCTLOPS, "ioctlops", "ioctl data buffer");
static MALLOC_DEFINE(M_SELECT, "select", "select() buffer");
MALLOC_DEFINE(M_IOV, "iov", "large iov's");
@ -145,7 +149,7 @@ sys_read(td, uap)
struct iovec aiov;
int error;
if (uap->nbyte > INT_MAX)
if (uap->nbyte > IOSIZE_MAX)
return (EINVAL);
aiov.iov_base = uap->buf;
aiov.iov_len = uap->nbyte;
@ -178,7 +182,7 @@ sys_pread(td, uap)
struct iovec aiov;
int error;
if (uap->nbyte > INT_MAX)
if (uap->nbyte > IOSIZE_MAX)
return (EINVAL);
aiov.iov_base = uap->buf;
aiov.iov_len = uap->nbyte;
@ -334,7 +338,12 @@ dofileread(td, fd, fp, auio, offset, flags)
ktrgenio(fd, UIO_READ, ktruio, error);
}
#endif
#if SSIZE_MAX > LONG_MAX
td->td_retval[1] = cnt >> (sizeof(register_t) * CHAR_BIT);
td->td_retval[0] = cnt;
#else
td->td_retval[0] = cnt;
#endif
return (error);
}
@ -354,7 +363,7 @@ sys_write(td, uap)
struct iovec aiov;
int error;
if (uap->nbyte > INT_MAX)
if (uap->nbyte > IOSIZE_MAX)
return (EINVAL);
aiov.iov_base = (void *)(uintptr_t)uap->buf;
aiov.iov_len = uap->nbyte;
@ -387,7 +396,7 @@ sys_pwrite(td, uap)
struct iovec aiov;
int error;
if (uap->nbyte > INT_MAX)
if (uap->nbyte > IOSIZE_MAX)
return (EINVAL);
aiov.iov_base = (void *)(uintptr_t)uap->buf;
aiov.iov_len = uap->nbyte;
@ -546,7 +555,12 @@ dofilewrite(td, fd, fp, auio, offset, flags)
ktrgenio(fd, UIO_WRITE, ktruio, error);
}
#endif
#if SSIZE_MAX > LONG_MAX
td->td_retval[1] = cnt >> (sizeof(register_t) * CHAR_BIT);
td->td_retval[0] = cnt;
#else
td->td_retval[0] = cnt;
#endif
return (error);
}

13
sys/kern/sys_pipe.c
View File

@ -617,7 +617,7 @@ pipe_read(fp, uio, active_cred, flags, td)
size = rpipe->pipe_buffer.size - rpipe->pipe_buffer.out;
if (size > rpipe->pipe_buffer.cnt)
size = rpipe->pipe_buffer.cnt;
if (size > (u_int) uio->uio_resid)
if (size > uio->uio_resid)
size = (u_int) uio->uio_resid;
PIPE_UNLOCK(rpipe);
@ -650,7 +650,7 @@ pipe_read(fp, uio, active_cred, flags, td)
*/
} else if ((size = rpipe->pipe_map.cnt) &&
(rpipe->pipe_state & PIPE_DIRECTW)) {
if (size > (u_int) uio->uio_resid)
if (size > uio->uio_resid)
size = (u_int) uio->uio_resid;
PIPE_UNLOCK(rpipe);
@ -764,9 +764,10 @@ pipe_build_write_buffer(wpipe, uio)
KASSERT(wpipe->pipe_state & PIPE_DIRECTW,
("Clone attempt on non-direct write pipe!"));
size = (u_int) uio->uio_iov->iov_len;
if (size > wpipe->pipe_buffer.size)
size = wpipe->pipe_buffer.size;
if (uio->uio_iov->iov_len > wpipe->pipe_buffer.size)
size = wpipe->pipe_buffer.size;
else
size = uio->uio_iov->iov_len;
if ((i = vm_fault_quick_hold_pages(&curproc->p_vmspace->vm_map,
(vm_offset_t)uio->uio_iov->iov_base, size, VM_PROT_READ,
@ -960,7 +961,7 @@ pipe_write(fp, uio, active_cred, flags, td)
int flags;
{
int error = 0;
int desiredsize, orig_resid;
size_t desiredsize, orig_resid;
struct pipe *wpipe, *rpipe;
rpipe = fp->f_data;

6
sys/kern/tty_ttydisc.c
View File

@ -180,7 +180,7 @@ static int
ttydisc_read_raw_no_timer(struct tty *tp, struct uio *uio, int ioflag)
{
size_t vmin = tp->t_termios.c_cc[VMIN];
int oresid = uio->uio_resid;
ssize_t oresid = uio->uio_resid;
int error;
MPASS(tp->t_termios.c_cc[VTIME] == 0);
@ -265,7 +265,7 @@ static int
ttydisc_read_raw_interbyte_timer(struct tty *tp, struct uio *uio, int ioflag)
{
size_t vmin = tp->t_termios.c_cc[VMIN];
int oresid = uio->uio_resid;
ssize_t oresid = uio->uio_resid;
int error;
MPASS(tp->t_termios.c_cc[VMIN] != 0);
@ -1173,7 +1173,7 @@ int
ttydisc_getc_uio(struct tty *tp, struct uio *uio)
{
int error = 0;
int obytes = uio->uio_resid;
ssize_t obytes = uio->uio_resid;
size_t len;
char buf[TTY_STACKBUF];

3
sys/kern/uipc_mbuf.c
View File

@ -1726,7 +1726,8 @@ struct mbuf *
m_uiotombuf(struct uio *uio, int how, int len, int align, int flags)
{
struct mbuf *m, *mb;
int error, length, total;
int error, length;
ssize_t total;
int progress = 0;
/*

17
sys/kern/uipc_socket.c
View File

@ -887,7 +887,8 @@ sosend_copyin(struct uio *uio, struct mbuf **retmp, int atomic, long *space,
int flags)
{
struct mbuf *m, **mp, *top;
long len, resid;
long len;
ssize_t resid;
int error;
#ifdef ZERO_COPY_SOCKETS
int cow_send;
@ -987,7 +988,8 @@ int
sosend_dgram(struct socket *so, struct sockaddr *addr, struct uio *uio,
struct mbuf *top, struct mbuf *control, int flags, struct thread *td)
{
long space, resid;
long space;
ssize_t resid;
int clen = 0, error, dontroute;
#ifdef ZERO_COPY_SOCKETS
int atomic = sosendallatonce(so) || top;
@ -1159,7 +1161,8 @@ int
sosend_generic(struct socket *so, struct sockaddr *addr, struct uio *uio,
struct mbuf *top, struct mbuf *control, int flags, struct thread *td)
{
long space, resid;
long space;
ssize_t resid;
int clen = 0, error, dontroute;
int atomic = sosendallatonce(so) || top;
@ -1456,11 +1459,12 @@ soreceive_generic(struct socket *so, struct sockaddr **psa, struct uio *uio,
struct mbuf **mp0, struct mbuf **controlp, int *flagsp)
{
struct mbuf *m, **mp;
int flags, len, error, offset;
int flags, error, offset;
ssize_t len;
struct protosw *pr = so->so_proto;
struct mbuf *nextrecord;
int moff, type = 0;
int orig_resid = uio->uio_resid;
ssize_t orig_resid = uio->uio_resid;
mp = mp0;
if (psa != NULL)
@ -2119,7 +2123,8 @@ soreceive_dgram(struct socket *so, struct sockaddr **psa, struct uio *uio,
struct mbuf **mp0, struct mbuf **controlp, int *flagsp)
{
struct mbuf *m, *m2;
int flags, len, error;
int flags, error;
ssize_t len;
struct protosw *pr = so->so_proto;
struct mbuf *nextrecord;

29
sys/kern/uipc_syscalls.c
View File

@ -756,8 +756,8 @@ kern_sendit(td, s, mp, flags, control, segflg)
struct uio auio;
struct iovec *iov;
struct socket *so;
int i;
int len, error;
int i, error;
ssize_t len;
cap_rights_t rights;
#ifdef KTRACE
struct uio *ktruio = NULL;
@ -956,7 +956,7 @@ kern_recvit(td, s, mp, fromseg, controlp)
struct uio auio;
struct iovec *iov;
int i;
socklen_t len;
ssize_t len;
int error;
struct mbuf *m, *control = 0;
caddr_t ctlbuf;
@ -1007,19 +1007,19 @@ kern_recvit(td, s, mp, fromseg, controlp)
(mp->msg_control || controlp) ? &control : (struct mbuf **)0,
&mp->msg_flags);
if (error) {
if (auio.uio_resid != (int)len && (error == ERESTART ||
if (auio.uio_resid != len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
error = 0;
}
#ifdef KTRACE
if (ktruio != NULL) {
ktruio->uio_resid = (int)len - auio.uio_resid;
ktruio->uio_resid = len - auio.uio_resid;
ktrgenio(s, UIO_READ, ktruio, error);
}
#endif
if (error)
goto out;
td->td_retval[0] = (int)len - auio.uio_resid;
td->td_retval[0] = len - auio.uio_resid;
if (mp->msg_name) {
len = mp->msg_namelen;
if (len <= 0 || fromsa == 0)
@ -2086,7 +2086,8 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
else if (uap->flags & SF_NODISKIO)
error = EBUSY;
else {
int bsize, resid;
int bsize;
ssize_t resid;
/*
* Ensure that our page is still around
@ -2510,7 +2511,8 @@ sys_sctp_generic_sendmsg_iov(td, uap)
struct sctp_sndrcvinfo sinfo, *u_sinfo = NULL;
struct socket *so;
struct file *fp = NULL;
int error=0, len, i;
int error=0, i;
ssize_t len;
struct sockaddr *to = NULL;
#ifdef KTRACE
struct uio *ktruio = NULL;
@ -2637,7 +2639,8 @@ sys_sctp_generic_recvmsg(td, uap)
struct file *fp = NULL;
struct sockaddr *fromsa;
int fromlen;
int len, i, msg_flags;
ssize_t len;
int i, msg_flags;
int error = 0;
#ifdef KTRACE
struct uio *ktruio = NULL;
@ -2711,7 +2714,7 @@ sys_sctp_generic_recvmsg(td, uap)
(struct sctp_sndrcvinfo *)&sinfo, 1);
CURVNET_RESTORE();
if (error) {
if (auio.uio_resid != (int)len && (error == ERESTART ||
if (auio.uio_resid != len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
error = 0;
} else {
@ -2720,13 +2723,13 @@ sys_sctp_generic_recvmsg(td, uap)
}
#ifdef KTRACE
if (ktruio != NULL) {
ktruio->uio_resid = (int)len - auio.uio_resid;
ktruio->uio_resid = len - auio.uio_resid;
ktrgenio(uap->sd, UIO_READ, ktruio, error);
}
#endif /* KTRACE */
if (error)
goto out;
td->td_retval[0] = (int)len - auio.uio_resid;
td->td_retval[0] = len - auio.uio_resid;
if (fromlen && uap->from) {
len = fromlen;
@ -2734,7 +2737,7 @@ sys_sctp_generic_recvmsg(td, uap)
len = 0;
else {
len = MIN(len, fromsa->sa_len);
error = copyout(fromsa, uap->from, (unsigned)len);
error = copyout(fromsa, uap->from, (size_t)len);
if (error)
goto out;
}

6
sys/kern/vfs_extattr.c
View File

@ -181,7 +181,7 @@ extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = 0;
if (nbytes > INT_MAX) {
if (nbytes > IOSIZE_MAX) {
error = EINVAL;
goto done;
}
@ -355,7 +355,7 @@ extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = 0;
if (nbytes > INT_MAX) {
if (nbytes > IOSIZE_MAX) {
error = EINVAL;
goto done;
}
@ -672,7 +672,7 @@ extattr_list_vp(struct vnode *vp, int attrnamespace, void *data,
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = 0;
if (nbytes > INT_MAX) {
if (nbytes > IOSIZE_MAX) {
error = EINVAL;
goto done;
}

5
sys/kern/vfs_mountroot.c
View File

@ -871,9 +871,8 @@ vfs_mountroot_readconf(struct thread *td, struct sbuf *sb)
static char buf[128];
struct nameidata nd;
off_t ofs;
int error, flags;
int len, resid;
int vfslocked;
ssize_t resid;
int error, flags, len, vfslocked;
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE,
"/.mount.conf", td);

6
sys/kern/vfs_syscalls.c
View File

@ -2692,7 +2692,7 @@ kern_readlinkat(struct thread *td, int fd, char *path, enum uio_seg pathseg,
struct nameidata nd;
int vfslocked;
if (count > INT_MAX)
if (count > IOSIZE_MAX)
return (EINVAL);
NDINIT_AT(&nd, LOOKUP, NOFOLLOW | LOCKSHARED | LOCKLEAF | MPSAFE |
@ -4153,7 +4153,8 @@ kern_getdirentries(struct thread *td, int fd, char *buf, u_int count,
int error, eofflag;
AUDIT_ARG_FD(fd);
if (count > INT_MAX)
auio.uio_resid = count;
if (auio.uio_resid > IOSIZE_MAX)
return (EINVAL);
if ((error = getvnode(td->td_proc->p_fd, fd, CAP_READ | CAP_SEEK,
&fp)) != 0)
@ -4177,7 +4178,6 @@ kern_getdirentries(struct thread *td, int fd, char *buf, u_int count,
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_USERSPACE;
auio.uio_td = td;
auio.uio_resid = count;
vn_lock(vp, LK_SHARED | LK_RETRY);
AUDIT_ARG_VNODE1(vp);
loff = auio.uio_offset = fp->f_offset;

4
sys/kern/vfs_vnops.c
View File

@ -373,7 +373,7 @@ vn_rdwr(rw, vp, base, len, offset, segflg, ioflg, active_cred, file_cred,
int ioflg;
struct ucred *active_cred;
struct ucred *file_cred;
int *aresid;
ssize_t *aresid;
struct thread *td;
{
struct uio auio;
@ -470,7 +470,7 @@ vn_rdwr_inchunks(rw, vp, base, len, offset, segflg, ioflg, active_cred,
struct thread *td;
{
int error = 0;
int iaresid;
ssize_t iaresid;
VFS_ASSERT_GIANT(vp->v_mount);

14
sys/nfsclient/nfs_bio.c
View File

@ -564,7 +564,7 @@ nfs_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
n = 0;
if (on < bcount)
n = min((unsigned)(bcount - on), uio->uio_resid);
n = MIN((unsigned)(bcount - on), uio->uio_resid);
break;
case VLNK:
nfsstats.biocache_readlinks++;
@ -583,7 +583,7 @@ nfs_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
return (error);
}
}
n = min(uio->uio_resid, NFS_MAXPATHLEN - bp->b_resid);
n = MIN(uio->uio_resid, NFS_MAXPATHLEN - bp->b_resid);
on = 0;
break;
case VDIR:
@ -751,8 +751,8 @@ nfs_directio_write(vp, uiop, cred, ioflag)
struct iovec iov;
do_sync:
while (uiop->uio_resid > 0) {
size = min(uiop->uio_resid, wsize);
size = min(uiop->uio_iov->iov_len, size);
size = MIN(uiop->uio_resid, wsize);
size = MIN(uiop->uio_iov->iov_len, size);
iov.iov_base = uiop->uio_iov->iov_base;
iov.iov_len = size;
uio.uio_iov = &iov;
@ -800,8 +800,8 @@ nfs_directio_write(vp, uiop, cred, ioflag)
* in NFS directio access.
*/
while (uiop->uio_resid > 0) {
size = min(uiop->uio_resid, wsize);
size = min(uiop->uio_iov->iov_len, size);
size = MIN(uiop->uio_resid, wsize);
size = MIN(uiop->uio_iov->iov_len, size);
bp = getpbuf(&nfs_pbuf_freecnt);
t_uio = malloc(sizeof(struct uio), M_NFSDIRECTIO, M_WAITOK);
t_iov = malloc(sizeof(struct iovec), M_NFSDIRECTIO, M_WAITOK);
@ -1014,7 +1014,7 @@ nfs_write(struct vop_write_args *ap)
nfsstats.biocache_writes++;
lbn = uio->uio_offset / biosize;
on = uio->uio_offset & (biosize-1);
n = min((unsigned)(biosize - on), uio->uio_resid);
n = MIN((unsigned)(biosize - on), uio->uio_resid);
again:
/*
* Handle direct append and file extension cases, calculate

3
sys/sys/systm.h
View File

@ -133,6 +133,9 @@ extern char **kenvp;
extern const void *zero_region; /* address space maps to a zeroed page */
extern int iosize_max_clamp;
#define IOSIZE_MAX (iosize_max_clamp ? INT_MAX : SSIZE_MAX)
/*
* General function declarations.
*/

2
sys/sys/vnode.h
View File

@ -653,7 +653,7 @@ void vn_pages_remove(struct vnode *vp, vm_pindex_t start, vm_pindex_t end);
int vn_pollrecord(struct vnode *vp, struct thread *p, int events);
int vn_rdwr(enum uio_rw rw, struct vnode *vp, void *base,
int len, off_t offset, enum uio_seg segflg, int ioflg,
struct ucred *active_cred, struct ucred *file_cred, int *aresid,
struct ucred *active_cred, struct ucred *file_cred, ssize_t *aresid,
struct thread *td);
int vn_rdwr_inchunks(enum uio_rw rw, struct vnode *vp, void *base,
size_t len, off_t offset, enum uio_seg segflg, int ioflg,

12
sys/ufs/ffs/ffs_vnops.c
View File

@ -420,7 +420,8 @@ ffs_read(ap)
ufs_lbn_t lbn, nextlbn;
off_t bytesinfile;
long size, xfersize, blkoffset;
int error, orig_resid;
ssize_t orig_resid;
int error;
int seqcount;
int ioflag;
@ -633,8 +634,9 @@ ffs_write(ap)
struct buf *bp;
ufs_lbn_t lbn;
off_t osize;
ssize_t resid;
int seqcount;
int blkoffset, error, flags, ioflag, resid, size, xfersize;
int blkoffset, error, flags, ioflag, size, xfersize;
vp = ap->a_vp;
uio = ap->a_uio;
@ -871,7 +873,8 @@ ffs_extread(struct vnode *vp, struct uio *uio, int ioflag)
ufs_lbn_t lbn, nextlbn;
off_t bytesinfile;
long size, xfersize, blkoffset;
int error, orig_resid;
ssize_t orig_resid;
int error;
ip = VTOI(vp);
fs = ip->i_fs;
@ -1024,7 +1027,8 @@ ffs_extwrite(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *ucred)
struct buf *bp;
ufs_lbn_t lbn;
off_t osize;
int blkoffset, error, flags, resid, size, xfersize;
ssize_t resid;
int blkoffset, error, flags, size, xfersize;
ip = VTOI(vp);
fs = ip->i_fs;

3
sys/ufs/ufs/ufs_lookup.c
View File

@ -1337,7 +1337,8 @@ ufs_dirempty(ip, parentino, cred)
doff_t off;
struct dirtemplate dbuf;
struct direct *dp = (struct direct *)&dbuf;
int error, count, namlen;
int error, namlen;
ssize_t count;
#define MINDIRSIZ (sizeof (struct dirtemplate) / 2)
for (off = 0; off < ip->i_size; off += dp->d_reclen) {