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(__mmap64): Optimize a bit.
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@ -1,4 +1,4 @@
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/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
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@ -39,28 +39,32 @@ static int have_no_mmap2;
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#endif
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#endif
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__ptr_t
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__mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
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void *
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__mmap64 (void *addr, size_t len, int prot, int flags, int fd, off64_t offset)
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{
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if (! (offset & ((1 << PAGE_SHIFT)-1)))
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{
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__set_errno (EINVAL);
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return MAP_FAILED;
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}
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#ifdef __NR_mmap2
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if (
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# ifndef __ASSUME_MMAP2_SYSCALL
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! have_no_mmap2 &&
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if (! have_no_mmap2)
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# endif
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! (offset & ((1 << PAGE_SHIFT)-1)))
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{
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# ifndef __ASSUME_MMAP2_SYSCALL
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int saved_errno = errno;
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# endif
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__ptr_t result;
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__ptrvalue (result) = INLINE_SYSCALL (mmap2, 6, __ptrvalue (addr), len, prot,
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flags, fd, (off_t) (offset >> PAGE_SHIFT));
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void *result;
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__ptrvalue (result) = INLINE_SYSCALL (mmap2, 6, __ptrvalue (addr), len,
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prot, flags, fd,
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(off_t) (offset >> PAGE_SHIFT));
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# if __BOUNDED_POINTERS__
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__ptrlow (result) = __ptrvalue (result);
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__ptrhigh (result) = __ptrvalue (result) + len;
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# endif
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# ifndef __ASSUME_MMAP2_SYSCALL
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if (result != (__ptr_t) -1 || errno != ENOSYS)
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if (result != MAP_FAILED || errno != ENOSYS)
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# endif
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return result;
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@ -70,6 +74,7 @@ __mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
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# endif
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}
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#endif
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#ifndef __ASSUME_MMAP2_SYSCALL
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if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len))
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{
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__set_errno (EINVAL);
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@ -77,6 +82,7 @@ __mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
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}
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return __mmap (addr, len, prot, flags, fd, (off_t) offset);
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#endif
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}
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weak_alias (__mmap64, mmap64)
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