zfs/cmd/ztest
Etienne Dechamps 9d81146b01 Use dynamic file descriptor numbers in ztest.
Currently, ztest expects to get 3 and 4 as the file descriptors for
data and random files, respectively. This is quite fragile and breaks
easily if ztest is run with these file descriptors already opened
(e.g. in a complex shell script).

This patch fixes the issue by removing the assumptions on the file
descriptor numbers that open() returns.

For the random file (/dev/urandom), the new code doesn't rely on a
shared file descriptor; instead, it reopens the file in the child.

For the data file, the new code writes the file descriptor number into
a "ZTEST_FD_DATA" environment variable so that it can be recovered
after the execv() call.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-10-04 13:19:09 -07:00
..
.gitignore Add .gitignore files to exclude build products 2010-01-08 11:35:17 -08:00
Makefile.am Combine libraries: spl, avl, efi, share, unicode. 2012-01-17 15:19:50 -08:00
ztest.c Use dynamic file descriptor numbers in ztest. 2012-10-04 13:19:09 -07:00