BPF: Switch to 32 bit compatible mode only when thread is 32 bit
Sometimes 32 bit and 64 bit ioctls are represented by the same number. It causes unnecessary switch to 32 bit commpatible mode. This patch prevents switching when we are dealing with 64 bit executable. It fixes issue mentioned here Authored by: Patryk Duda <pdk@semihalf.com> Submitted by: Wojciech Macek <wma@semihalf.com> Reviewed by: andrew, wma Obtained from: Semihalf Sponsored by: IBM, QCM Technologies Differential revision: https://reviews.freebsd.org/D14023
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=328394
@ -62,6 +62,7 @@ __FBSDID("$FreeBSD$");
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#include <sys/sockio.h>
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#include <sys/ttycom.h>
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#include <sys/uio.h>
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#include <sys/sysent.h>
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#include <sys/event.h>
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#include <sys/file.h>
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@ -1321,9 +1322,11 @@ bpfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags,
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case BIOCGDLTLIST32:
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case BIOCGRTIMEOUT32:
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case BIOCSRTIMEOUT32:
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BPFD_LOCK(d);
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d->bd_compat32 = 1;
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BPFD_UNLOCK(d);
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if (SV_PROC_FLAG(td->td_proc, SV_ILP32)) {
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BPFD_LOCK(d);
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d->bd_compat32 = 1;
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BPFD_UNLOCK(d);
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}
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}
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#endif
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