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newlib-cygwin
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* mmap.cc (mmap): Assign 'fh' from cygheap_fdget. Use 'fh' everywhere.

This commit is contained in:
Christopher Faylor 2001-10-16 14:04:26 +00:00
parent f636c08124
commit 5a23087628
2 changed files with 8 additions and 3 deletions
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4
winsup/cygwin/ChangeLog
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@ -1,3 +1,7 @@
2001-10-16 Christopher Faylor <cgf@redhat.com>
* mmap.cc (mmap): Assign 'fh' from cygheap_fdget. Use 'fh' everywhere.
2001-10-15 Christopher Faylor <cgf@redhat.com>
* cygerrno.h (set_errno): Define more informative version of this

7
winsup/cygwin/mmap.cc
View File

@ -445,7 +445,7 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t off)
DWORD gran_off = off & ~(granularity - 1);
DWORD gran_len = howmany (len, granularity) * granularity;
fhandler_base *fh = NULL;
fhandler_base *fh;
caddr_t base = addr;
HANDLE h;
@ -459,14 +459,15 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t off)
ReleaseResourceLock(LOCK_MMAP_LIST, READ_LOCK | WRITE_LOCK, "mmap");
return MAP_FAILED;
}
if (cfd->get_device () == FH_DISK)
fh = cfd;
if (fh->get_device () == FH_DISK)
{
DWORD fsiz = GetFileSize (fh->get_handle (), NULL);
fsiz -= gran_off;
if (gran_len > fsiz)
gran_len = fsiz;
}
else if (cfd->get_device () == FH_ZERO)
else if (fh->get_device () == FH_ZERO)
/* mmap /dev/zero is like MAP_ANONYMOUS. */
fd = -1;
}