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| author | Rich Felker <dalias@aerifal.cx> | 2017-04-21 17:24:46 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2017-04-21 17:24:46 -0400 |
| commit | 2577b1bc16124d0690b9dd268a9f582f80bdcd67 (patch) | |
| tree | f8762017a80fd4ff62edd41baf8cf325604d181f | |
| parent | b3751c3282e3fbae4b97cb4f29031df9bc6e0745 (diff) | |
| download | musl-2577b1bc16124d0690b9dd268a9f582f80bdcd67.zip musl-2577b1bc16124d0690b9dd268a9f582f80bdcd67.tar.gz musl-2577b1bc16124d0690b9dd268a9f582f80bdcd67.tar.bz2 | |
allow full-range file offsets to mmap on archs with 64-bit syscall args
normally 32-bit archs use the mmap2 syscall and are limited to an
offset of 2^32 pages. however some 32-bit archs (mainly ILP32-on-64
ones like x32) have 64-bit syscall argument slots and thus can accept
the full range. don't artifically limit them.
| -rw-r--r-- | src/mman/mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mman/mmap.c b/src/mman/mmap.c index b85f25c..19caadb 100644 --- a/src/mman/mmap.c +++ b/src/mman/mmap.c @@ -10,7 +10,7 @@ static void dummy(void) { } weak_alias(dummy, __vm_wait); #define UNIT SYSCALL_MMAP2_UNIT -#define OFF_MASK ((-0x2000ULL << (8*sizeof(long)-1)) | (UNIT-1)) +#define OFF_MASK ((-0x2000ULL << (8*sizeof(syscall_arg_t)-1)) | (UNIT-1)) void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off) { |