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vm_ooffset_t is now unsigned

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vm_ooffset_t is now unsigned. Remove some tests for negative values,
or make other adjustments accordingly.

Reported by:	Coverity
Reviewed by:	kib markj
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D26214
This commit is contained in:
Eric van Gyzen 2020-09-18 16:48:08 +00:00
parent 6dadc5d1cd
commit f9cc8410e1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=365886
7 changed files with 12 additions and 13 deletions
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2
sys/dev/fb/fbd.c
View File

@ -176,7 +176,7 @@ fb_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
if (info->fb_flags & FB_FLAG_NOMMAP)
return (ENODEV);
if (offset >= 0 && offset < info->fb_size) {
if (offset < info->fb_size) {
if (info->fb_pbase == 0)
*paddr = vtophys((uint8_t *)info->fb_vbase + offset);
else

2
sys/dev/ksyms/ksyms.c
View File

@ -484,7 +484,7 @@ ksyms_mmap_single(struct cdev *dev, vm_ooffset_t *offset, vm_size_t size,
if (error != 0)
return (error);
if (*offset < 0 || *offset >= round_page(sc->sc_objsz) ||
if (*offset >= round_page(sc->sc_objsz) ||
size > round_page(sc->sc_objsz) - *offset ||
(nprot & ~PROT_READ) != 0)
return (EINVAL);

2
sys/dev/vt/hw/fb/vt_fb.c
View File

@ -140,7 +140,7 @@ vt_fb_mmap(struct vt_device *vd, vm_ooffset_t offset, vm_paddr_t *paddr,
if (info->fb_flags & FB_FLAG_NOMMAP)
return (ENODEV);
if (offset >= 0 && offset < info->fb_size) {
if (offset < info->fb_size) {
if (info->fb_pbase == 0) {
*paddr = vtophys((uint8_t *)info->fb_vbase + offset);
} else {

12
sys/fs/tmpfs/tmpfs_subr.c
View File

@ -178,12 +178,14 @@ RB_PROTOTYPE_STATIC(tmpfs_dir, tmpfs_dirent, uh.td_entries, tmpfs_dirtree_cmp);
size_t
tmpfs_mem_avail(void)
{
vm_ooffset_t avail;
size_t avail;
long reserved;
avail = swap_pager_avail + vm_free_count() - tmpfs_pages_reserved;
if (__predict_false(avail < 0))
avail = 0;
return (avail);
avail = swap_pager_avail + vm_free_count();
reserved = atomic_load_long(&tmpfs_pages_reserved);
if (__predict_false(avail < reserved))
return (0);
return (avail - reserved);
}
size_t

2
sys/kern/uipc_shm.c
View File

@ -1577,7 +1577,7 @@ shm_mmap(struct file *fp, vm_map_t map, vm_offset_t *addr, vm_size_t objsize,
#ifdef _LP64
objsize > OFF_MAX ||
#endif
foff < 0 || foff > OFF_MAX - objsize) {
foff > OFF_MAX - objsize) {
error = EINVAL;
goto out;
}

2
sys/kern/vfs_vnops.c
View File

@ -2630,7 +2630,7 @@ vn_mmap(struct file *fp, vm_map_t map, vm_offset_t *addr, vm_size_t size,
#ifdef _LP64
size > OFF_MAX ||
#endif
foff < 0 || foff > OFF_MAX - size)
foff > OFF_MAX - size)
return (EINVAL);
writecounted = FALSE;

3
sys/vm/vnode_pager.c
View File

@ -541,9 +541,6 @@ vnode_pager_addr(struct vnode *vp, vm_ooffset_t address, daddr_t *rtaddress,
daddr_t vblock;
daddr_t voffset;
if (address < 0)
return -1;
if (VN_IS_DOOMED(vp))
return -1;