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signal: Document glibc's si_code of SI_ASYNCNL
The header uapi/asm-generic/siginfo.h appears to the the repository of all of these definitions in linux so collect up glibcs additions as well. Just to prevent someone from accidentally creating a conflict in the future. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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@ -165,6 +165,7 @@ typedef struct siginfo {
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#define SI_SIGIO -5 /* sent by queued SIGIO */
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#define SI_TKILL -6 /* sent by tkill system call */
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#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */
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#define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */
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#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
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#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
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