It should be EAGAIN, per POSIX 1003.1-1996 section 3.1.1.4:
3.1.1.4 Errors
If any of the following conditions occur, the fork() shall return -1
and set errno to the corresponding value:
[EAGAIN] The system lacked the necessary resources to create
another process, or the system-imposed limit on the
total number of processes under execution by a single
user would be exceeded.
For each of the following conditions, if the condition is detected,
the fork() shall return -1 and set errno to the corresponding value:
[ENOMEM] The process requires more space than the system is
able to supply.
-hpa
-- "Linux is a very complete and sophisticated operating system. There are, and will be, large numbers of applications available for it." -- Paul Maritz, Group Vice President for Platforms And Applications, Microsoft Corporation [Reference at: http://www.kernel.org/~hpa/ms.html]- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/