In message <20000129012828.A2531@win.tue.nl>, Guest section DW writes:
+-----
| What version of System V is this? I have a handful of System V manuals,
| but mine either do not list EAGAIN at all (for open()) or describe it
| by "the path argument names the slave side of a pseudo-terminal device
| that is locked". Or is this undocumented behaviour?
+--->8
It appears to be undocumented, or possibly SVR4 reverted this behavior.
Back when I herded SVR3.[12] systems, EAGAIN could be produced by just about
any system call that encountered a "transient out of resources" condition in
the kernel; this wasn't always documented in affected system calls, but was
at the time documented in intro(2).
Solaris appears to use EAGAIN only for "out of processes/LWPs" according to
its intro(2), so either it or SVR4 in general appears to have moved away
from that behavior. I don't see any equivalents to the SVR3 EAGAIN behavior
in its intro(2); maybe SVR4 puts the process to sleep until there are
sufficient resources?
--
brandon s. allbery os/2,linux,solaris,perl allbery@kf8nh.apk.net
system administrator kthkrb,heimdal,gnome,rt allbery@ece.cmu.edu
carnegie mellon / electrical and computer engineering kf8nh
We are Linux. Resistance is an indication that you missed the point.
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This archive was generated by hypermail 2b29 : Mon Jan 31 2000 - 21:00:22 EST