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| author | Florian Weimer <fweimer@redhat.com> | 2019-11-07 18:15:18 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-11-07 23:09:39 +0100 |
| commit | be6b16d975683e6cca57852cd4cfe715b2a9d8b1 (patch) | |
| tree | 040b7e45c4ee621e604da6e4072686b83a305505 /login/Makefile | |
| parent | 4f4bb489e0ddd2f24b2a5d352bb39f8dcdb38050 (diff) | |
| download | glibc-be6b16d975683e6cca57852cd4cfe715b2a9d8b1.zip glibc-be6b16d975683e6cca57852cd4cfe715b2a9d8b1.tar.gz glibc-be6b16d975683e6cca57852cd4cfe715b2a9d8b1.tar.bz2 | |
login: Acquire write lock early in pututline [BZ #24882]
It has been reported that due to lack of fairness in POSIX file
locking, the current reader-to-writer lock upgrade can result in
lack of forward progress. Acquiring the write lock directly
hopefully avoids this issue if there are only writers.
This also fixes bug 24882 due to the cache revalidation in
__libc_pututline.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Change-Id: I57e31ae30719e609a53505a0924dda101d46372e
Diffstat (limited to 'login/Makefile')
| -rw-r--r-- | login/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/login/Makefile b/login/Makefile index 0183db1..6a0182b 100644 --- a/login/Makefile +++ b/login/Makefile @@ -44,7 +44,7 @@ subdir-dirs = programs vpath %.c programs tests := tst-utmp tst-utmpx tst-grantpt tst-ptsname tst-getlogin tst-updwtmpx \ - tst-pututxline-lockfail + tst-pututxline-lockfail tst-pututxline-cache # Build the -lutil library with these extra functions. extra-libs := libutil @@ -74,3 +74,4 @@ $(inst_libexecdir)/pt_chown: $(objpfx)pt_chown $(+force) -$(INSTALL_PROGRAM) -m 4755 -o root $< $@ $(objpfx)tst-pututxline-lockfail: $(shared-thread-library) +$(objpfx)tst-pututxline-cache: $(shared-thread-library) |