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Sync __target_cmsg_nxthdr implementation with kernel header. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2894 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-05-28 21:35:23 +00:00
parent 7b717336e2
commit 2b8bdefc3a
1 changed files with 6 additions and 11 deletions
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17
linux-user/syscall_defs.h
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@ -176,19 +176,14 @@ struct target_cmsghdr {
static __inline__ struct target_cmsghdr * static __inline__ struct target_cmsghdr *
__target_cmsg_nxthdr (struct target_msghdr *__mhdr, struct target_cmsghdr *__cmsg) __target_cmsg_nxthdr (struct target_msghdr *__mhdr, struct target_cmsghdr *__cmsg)
{ {
if (tswapl(__cmsg->cmsg_len) < sizeof (struct target_cmsghdr)) struct target_cmsghdr *__ptr;
/* The kernel header does this so there may be a reason. */
return 0;
__cmsg = (struct target_cmsghdr *) ((unsigned char *) __cmsg __ptr = (struct target_cmsghdr *)((unsigned char *) __cmsg
+ TARGET_CMSG_ALIGN (tswapl(__cmsg->cmsg_len))); + TARGET_CMSG_ALIGN (tswapl(__cmsg->cmsg_len)));
if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) (unsigned long)tswapl(__mhdr->msg_control) if ((unsigned long)((char *)(__ptr+1) - (char *)(size_t)tswapl(__mhdr->msg_control))
+ tswapl(__mhdr->msg_controllen)) > tswapl(__mhdr->msg_controllen))
|| ((unsigned char *) __cmsg + TARGET_CMSG_ALIGN (tswapl(__cmsg->cmsg_len))
> ((unsigned char *) (unsigned long) tswapl(__mhdr->msg_control)
+ tswapl(__mhdr->msg_controllen))))
/* No more entries. */ /* No more entries. */
return 0; return (struct target_cmsghdr *)0;
return __cmsg; return __cmsg;
} }