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Systematically use vm_size_t to specify the size of the segment for VM KPI.

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Do not overload the local variable size in kern_shmat() due to vm_size_t
change.
Fix style bug by adding explicit comparision with 0.

Discussed with:	bde
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2009-03-05 11:45:42 +00:00
parent c783576970
commit 45329b60da
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=189398
1 changed files with 6 additions and 6 deletions
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12
sys/kern/sysv_shm.c
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@ -122,7 +122,7 @@ static sy_call_t *shmcalls[] = {
#define SHMSEG_WANTED 0x1000
static int shm_last_free, shm_nused, shmalloced;
size_t shm_committed;
vm_size_t shm_committed;
static struct shmid_kernel *shmsegs;
struct shmmap_state {
@ -245,7 +245,7 @@ static void
shm_deallocate_segment(shmseg)
struct shmid_kernel *shmseg;
{
size_t size;
vm_size_t size;
GIANT_REQUIRED;
@ -265,7 +265,7 @@ shm_delete_mapping(struct vmspace *vm, struct shmmap_state *shmmap_s)
{
struct shmid_kernel *shmseg;
int segnum, result;
size_t size;
vm_size_t size;
GIANT_REQUIRED;
@ -362,8 +362,8 @@ kern_shmat(td, shmid, shmaddr, shmflg)
mtx_lock(&Giant);
shmmap_s = p->p_vmspace->vm_shm;
if (shmmap_s == NULL) {
size = shminfo.shmseg * sizeof(struct shmmap_state);
shmmap_s = malloc(size, M_SHM, M_WAITOK);
shmmap_s = malloc(shminfo.shmseg * sizeof(struct shmmap_state),
M_SHM, M_WAITOK);
for (i = 0; i < shminfo.shmseg; i++)
shmmap_s[i].shmid = -1;
p->p_vmspace->vm_shm = shmmap_s;
@ -722,7 +722,7 @@ shmget_existing(td, uap, mode, segnum)
if (error != 0)
return (error);
#endif
if (uap->size && uap->size > shmseg->shm_bsegsz)
if (uap->size != 0 && uap->size > shmseg->shm_bsegsz)
return (EINVAL);
td->td_retval[0] = IXSEQ_TO_IPCID(segnum, shmseg->u.shm_perm);
return (0);