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This is the reason why files >= 2G could not be added to cpio, even on
64-bit architectures. Fwrite was called with a buffer >= 2G, but the
return value was truncated to int (this narrowing conversion is probably
undefined behavior already; what happens next, though, is that after
casting to size_t it assumes a very big numeric value of >= 2^64-2^32).
So rpmbuild was failing with an unrelated errno, "cpio: write failed -
Bad file descriptor".
There are other reasons why this still won't work on 32-bit architectures.
For one, rpmbuild mmaps a file before feeding it to cpio, and 32-bit
architectures have a very limited ability, if any, to mmap 2G+ files.
[4.0.4-alt102]
+ verify-elf: fixed passing of LD_PRELOAD in verify_unresolved.
[4.0.4-alt101]
+ verify-elf: made verify_lfs check shared objects too.
+ Relaxed check for gcc package name in {cpp,pkgconfiglib}.req generators.
[4.0.4-alt100.99]
+ Updated generator of non-LFS functions list.
[4.0.4-alt100.97]
+ fixup-libraries: fixed recognition of PIEs (ldv@).
+ verify-elf: treat PIEs as executables in the check for unresolved symbols (ldv@).
In verify_unresolved(), do not preload requested objects to $elf_ldd
directly because the latter is not an ELF interpreter but a shell
script. Instead, pass the list of objects that have to be preloaded
to $elf_ldd script which in turn assigns it to LD_PRELOAD variable
in the ELF interpreter invocation.
In file included from /usr/include/string.h:648:0,
from ../system.h:76,
from rpmio.c:6:
In function 'strncat',
inlined from 'Fdopen' at rpmio.c:3473:5:
/usr/include/bits/string3.h:158:10: warning: call to __builtin___strncat_chk might overflow destination buffer
return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
Previously, verify_lfs checked if object has valid interpreter, but it
doesn't make sense in case of shared objects. verify_lfs check is valid
for all ELFs linked with libraries supporting both LFS and non-LFS API
(libc.so and libz.so in our case).
Previously (according to the exit statuses):
0. if something strange was found in $rpath, an error was reported;
1. if nothing strange was found, no error was reported;
2. if grep failed, it looked like the previous case and no error was
reported (as if $rpath was valid).
Now, the pipe (and the whole script) would abort on grep's failure.
Now, if something fails, the pipe (and the function, and the whole
script) will fail.
If the exit codes are normal, they are handled according to our logic.
Previously, a failure (which is an exceptional rare case) would lead to:
1. skipping the further exe_stack check and error_strict STACK "$f" 'STACK entry not found'
2. silently skipping the exe_stack check (which was impossible anyway because of the failure)
The pipe (and the function, and the whole script) would fail when the
resulting constructed rpath was empty. But usually at least
$RPM_VERIFY_ELF_LDD_RPATH is not empty, so the bad behavior has not
been observed.
- verify-elf: honor RUNPATH in addition to RPATH, too (like in lib.req).
- (unnoticeable) shell.req: generalize the shebang regexp w.r.t. other
hardcoded locations of /usr/bin/env. (No need to be too strict here:
shebang.req should catch bad locations. It's not our job.)
- %distribution: ALT Linux --> ALT (ALT#32707).
From ld.so's documentation about the search order:
Using the directories specified in the DT_RPATH dynamic section
attribute of the binary if present and DT_RUNPATH attribute does not
exist. Use of DT_RPATH is deprecated.
Reasons:
1. code clarity (and more robust w.r.t. to future changes which might
lead to bugs, as before)
2. to give all the special methods a chance to print something in the
case of an empty list, too (when needed)
Since there appeared a special handling for just some kind of
symlinks, "$tmpdir"/files gave only a part of "$tmpdir"/files+types --
the final list of what to analyze.
- find-requires: treat symlinks leading to some real content all way
through the same package as that content.
- find-{requires,provides}: in case of an error in it, the pipe to it
will be broken (must not change the visible behavior of rpm-build).
We move "cat > /dev/null" to the only place where consuming the whole
input is useful for there to be no error.
This is done in preparation for a switch to the usage of tmpdir.sh.
- brp-verify_elf: handle all rules for setting LD_PRELOAD in the form
of pairs of RPM_LD_PRELOAD_@ and RPM_FILES_TO_LD_PRELOAD_@ env vars.
- verify-elf: substitute LD_PRELOAD with "$VERIFY_ELF_LD_PRELOAD"
before ldd (i.e., any prior value of LD_PRELOAD will be cleared!)
- examples of usage of the above facilities:
rpm-build-python3-0.1.9.3 and rpm-build-python.
