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This reverts commit 1db6dbb1dcdacfd7d2b4c84562fc6e77bc8c43a5.
The original patch was reverted because of issue #25369. The issue was created
because it wrongly assumed that sd_journal_seek_tail() seeks to 'current' tail.
But in fact, only when a subsequent sd_journal_previous() is called that it's
pointing to the tail at that time. The concept of 'tail' in sd_journal_seek_tail()
only has a logical meaning, and a sd_journal_previous is needed. In fact, if we
look at the codes in journalctl, we can see sd_journal_seek_tail() is followed by
sd_journal_previous(). By contrary, a sd_journal_next() after a 'logical' tail does
not make much sense. So the original patch is correct, and projects that are
using 'sd_journal_next()' right after 'sd_journal_seek_tail()' should do fixes
as in https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2823#note_1637715.
This illustrates bug in sd_journal_next() or friends;
calling sd_jounral_next() followed by sd_journal_seek_tail() makes the
location saved in sd-journal something corrupted, and subsequent
sd_journal_previous() or friends may fail or provides unexpected result.
When udevadm verify is invoked by an analyzer tool like rpminspect
to verify individual udev rules files, the summary just clutters the
output, so provide an option to turn the summary off.
This adds two verbs, edit and cat, to networkctl for
operating on network configs (namely .network, .netdev
and .link files). Specially, if the config name is
prefixed by @, it will be treated as network interface
name, and operations will be performed on config files
associated with the link.
Closes#26906
As it might hide a possible allocation error since it uses
the returns_nonnull attribute:
AddressSanitizer:DEADLYSIGNAL
=================================================================
==8==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000004 (pc 0x7f317897db8d bp 0x7ffd436fe9a0 sp 0x7ffd436fe970 T0)
==8==The signal is caused by a WRITE memory access.
==8==Hint: address points to the zero page.
SCARINESS: 10 (null-deref)
#0 0x7f317897db8d in source_new /work/build/../../src/systemd/src/libsystemd/sd-event/sd-event.c:1214:18
#1 0x7f317897e68c in sd_event_add_time /work/build/../../src/systemd/src/libsystemd/sd-event/sd-event.c:1417:13
#2 0x7f317897a0f6 in event_reset_time /work/build/../../src/systemd/src/libsystemd/sd-event/event-util.c:68:21
#3 0x4e2c8e in client_initialize_time_events /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp-client.c:1366:13
#4 0x4eb0fd in client_initialize_events /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp-client.c:1380:9
#5 0x4eb0fd in client_start_delayed /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp-client.c:1410:16
#6 0x4e30aa in client_start /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp-client.c:1415:16
#7 0x4e30aa in sd_dhcp_client_start /work/build/../../src/systemd/src/libsystemd-network/sd-dhcp-client.c:2045:13
#8 0x4e700e in LLVMFuzzerTestOneInput /work/build/../../src/systemd/src/libsystemd-network/fuzz-dhcp-client.c:73:15
#9 0x5062f8 in NaloFuzzerTestOneInput (/build/fuzz-dhcp-client+0x5062f8)
#10 0x525283 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
#11 0x524a6a in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:514:3
#12 0x526139 in fuzzer::Fuzzer::MutateAndTestOne() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:757:19
#13 0x526e05 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:895:5
#14 0x51616f in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:912:6
#15 0x516a38 in LLVMFuzzerRunDriver /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:925:10
#16 0x506555 in main (/build/fuzz-dhcp-client+0x506555)
#17 0x7f3177ce3082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee)
#18 0x420c4d in _start (/build/fuzz-dhcp-client+0x420c4d)
Found by Nallocfuzz.
In case one of the allocations fails.
For example:
AddressSanitizer:DEADLYSIGNAL
=================================================================
==17==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fb352a476e5 bp 0x7ffe45154850 sp 0x7ffe45154008 T0)
==17==The signal is caused by a READ memory access.
==17==Hint: address points to the zero page.
SCARINESS: 10 (null-deref)
#0 0x7fb352a476e5 (/lib/x86_64-linux-gnu/libc.so.6+0x1886e5) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee)
#1 0x435878 in __interceptor_strlen /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc
#2 0x4de1e4 in LLVMFuzzerTestOneInput /work/build/../../src/systemd/src/fuzz/fuzz-calendarspec.c:20:21
#3 0x4deea8 in NaloFuzzerTestOneInput (/build/fuzz-calendarspec+0x4deea8)
#4 0x4fde33 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
#5 0x4fd61a in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:514:3
#6 0x4fece9 in fuzzer::Fuzzer::MutateAndTestOne() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:757:19
#7 0x4ff9b5 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:895:5
#8 0x4eed1f in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:912:6
#9 0x4ef5e8 in LLVMFuzzerRunDriver /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:925:10
#10 0x4df105 in main (/build/fuzz-calendarspec+0x4df105)
#11 0x7fb3528e3082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee)
#12 0x41f80d in _start (/build/fuzz-calendarspec+0x41f80d)
Found by Nallocfuzz.
Doesn't matter much, but this makes it leas magic and independent of
/proc/ mounts. (Well, it actually doesn't, since the right-hand path is
also in /proc/, but still...
Let's be more accurate about what this function does: it checks whether
the underlying reported inode is the same. Internally, this already uses
a better named stat_inode_same() call, hence let's similarly name the
wrapping function following the same logic.
Similar for files_same_at() and path_equal_or_same_files().
No code changes, just some renaming.
Set --boot with --follow only if it's not already set and if --merge is
not used, since it's not compatible with --boot.
Follow-up to 2dd9285bac.
Resolves: #24565
Dump*() methods can take quite some time due to the amount of data to
serialize, so they can potentially stall the manager. Make them
privileged, as they are debugging tools anyway. Use a new 'dump'
capability for polkit, and the 'reload' capability for SELinux, as
that's also non-destructive but slow.
If the caller is not privileged, allow it but rate limited to 10 calls
every 10 minutes.
The call is void anyway, it doesn't return an failure indication. Hence,
no need to cast void to (void)...
(We got this right in most cases, but forgot some)
