For reference see ERESTART* in strace source and in Linux arch/x86/kernel/signal.c along with EINTR. Current code in EDB, trying to check ERESTARTSYS|EINTR looks strange, since ERESTARTSYS|EINTR=512+4=516=ERESTART_RESTARTBLOCK, while there're also ERESTARTNOINTR=513 and ERESTARTNOHAND=514, i.e. such errno values are never meant to be used as bit masks.
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commented
8 years ago
For reference see
ERESTART*instracesource and in Linuxarch/x86/kernel/signal.calong withEINTR. Current code in EDB, trying to checkERESTARTSYS|EINTRlooks strange, sinceERESTARTSYS|EINTR=512+4=516=ERESTART_RESTARTBLOCK, while there're alsoERESTARTNOINTR=513andERESTARTNOHAND=514, i.e. such errno values are never meant to be used as bit masks.