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(__mmap64): Really fix check for offset.

This commit is contained in:
Andreas Jaeger 2000-07-24 16:52:03 +00:00
parent 72eb780897
commit efd70b34d9
1 changed files with 6 additions and 7 deletions
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13
sysdeps/unix/sysv/linux/powerpc/mmap64.c
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@ -40,15 +40,13 @@ __ptr_t
__mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset) __mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
{ {
#ifdef __NR_mmap2 #ifdef __NR_mmap2
if (! (offset & PAGE_MASK)) if (
{
__set_errno (EINVAL);
return MAP_FAILED;
}
# ifndef __ASSUME_MMAP2_SYSCALL # ifndef __ASSUME_MMAP2_SYSCALL
if (! have_no_mmap2) ! have_no_mmap2 &&
# endif
! (offset & ~PAGE_MASK))
{ {
# ifndef __ASSUME_MMAP2_SYSCALL
int saved_errno = errno; int saved_errno = errno;
# endif # endif
/* This will be always 12, no matter what page size is. */ /* This will be always 12, no matter what page size is. */
@ -67,6 +65,7 @@ __mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
# ifndef __ASSUME_MMAP2_SYSCALL # ifndef __ASSUME_MMAP2_SYSCALL
__set_errno (saved_errno); __set_errno (saved_errno);
have_no_mmap2 = 1; have_no_mmap2 = 1;
# endif
} }
#endif #endif
if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len)) if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len))