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io.c (NUM2IOCTLREQ): Accept a value more than INT_MAX

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ioctl accepts int as request arguments on some platforms, but some
requests are more than INT_MAX, e.g., RNDGETENTCNT(0x80045200).
Passing (0x80045200 | (-1 << 32)) may work around the issue, but it may
not work on a platform where ioctl accepts unsigned long.  So this
change uses NUM2LONG and then casts it to int.
This commit is contained in:
Yusuke Endoh 2019-10-11 21:43:18 +09:00
parent 9e4a53fe13
commit c866663784
1 changed files with 1 additions and 1 deletions
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io.c
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@ -9565,7 +9565,7 @@ rb_f_select(int argc, VALUE *argv, VALUE obj)
# define NUM2IOCTLREQ(num) NUM2ULONG(num) # define NUM2IOCTLREQ(num) NUM2ULONG(num)
#else #else
typedef int ioctl_req_t; typedef int ioctl_req_t;
# define NUM2IOCTLREQ(num) NUM2INT(num) # define NUM2IOCTLREQ(num) ((int)NUM2LONG(num))
#endif #endif
#ifdef HAVE_IOCTL #ifdef HAVE_IOCTL