ugh this whole "blocking optimization" stuff in tail_forever just seems
broken... i'm not sure the correct fix, but the following fix seems to do
the job for me.
i've tested doing tail -f and -F on one and multiple files on 2.6 and 2.4
... i've done other nonsense tests like "tail -f" on stdin, and "cat |
tail -f" ... and they all appear to behave i'd expect them to.
-dean
--- coreutils-5.93/src/tail.c.orig 2005-11-02 05:18:47.000000000 -0800
+++ coreutils-5.93/src/tail.c 2005-11-15 17:58:55.852102952 -0800
@@ -1020,7 +1020,8 @@
int new_flags = old_flags | (blocking ? 0 : O_NONBLOCK);
if (old_flags < 0
|| (new_flags != old_flags
- && fcntl (fd, F_SETFL, new_flags) == -1))
+ && fcntl (fd, F_SETFL, new_flags) == -1
+ && (!S_ISREG(f[i].mode) || errno != EPERM)))
error (EXIT_FAILURE, errno,
_("%s: cannot change nonblocking mode"), name);
f[i].blocking = blocking;
--
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