Final 4.9-RC (i386) available now, please help test.
Matthias Andree
ma at dt.e-technik.uni-dortmund.de
Fri Oct 24 17:49:55 PDT 2003
Murray Stokely <murray at freebsd.org> writes:
> RC4 includes the SATA and DRM fixes, along with a few other
> panic-preventing bugfixes. If everything goes well we can release 4.9
> on Monday.
May not be release critical, but rather fine tuning:
The install program does strange things, even in -S mode.
A regular -c install operation flow is similar to:
kill destination file
open destination file with mode 0600
copy content
close
fchmod
fchflags
Problem: there is a short period where the program, when overwritten, is
not executable ("permission denied").
One could think install -S (S for safe) would fix that, but it doesn't,
strace:
rename("/tmp/INS at 02eI", "/tmp/x2") = 0
<- here the /tmp/x2 file is not accessible
close(4) = 0
open("/tmp/x2", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
fchmod(4, 0755) = 0
fchflags(4, 0) = 0
I'd suggest the order be
fchmod
close
rename
open
fchflags
...
That way, the program installed will always be executable if the user
tells FreeBSD to "install -S".
--
Matthias Andree
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