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| author | Florian Weimer <fweimer@redhat.com> | 2021-02-03 08:55:13 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-02-08 14:10:42 -0300 |
| commit | e9fed2438a1ff475821864f906286dc58907f06b (patch) | |
| tree | 185b4a49e256ef312e65eafebf836ba17ea2ccef /nptl/Makefile | |
| parent | 7f61f785f16d22f185de77086c44a88218436cfb (diff) | |
| download | glibc-e9fed2438a1ff475821864f906286dc58907f06b.zip glibc-e9fed2438a1ff475821864f906286dc58907f06b.tar.gz glibc-e9fed2438a1ff475821864f906286dc58907f06b.tar.bz2 | |
linux: Require /dev/shm as the shared memory file system
Previously, glibc would pick an arbitrary tmpfs file system from
/proc/mounts if /dev/shm was not available. This could lead to
an unsuitable file system being picked for the backing storage for
shm_open, sem_open, and related functions.
This patch introduces a new function, __shm_get_name, which builds
the file name under the appropriate (now hard-coded) directory. It is
called from the various shm_* and sem_* function. Unlike the
SHM_GET_NAME macro it replaces, the callers handle the return values
and errno updates. shm-directory.c is moved directly into the posix
subdirectory because it can be implemented directly using POSIX
functionality. It resides in libc because it is needed by both
librt and nptl/htl.
In the sem_open implementation, tmpfname is initialized directly
from a string constant. This happens to remove one alloca call.
Checked on x86_64-linux-gnu.
Diffstat (limited to 'nptl/Makefile')
| -rw-r--r-- | nptl/Makefile | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/nptl/Makefile b/nptl/Makefile index 0282e07..c49134b 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -137,7 +137,6 @@ libpthread-routines = nptl-init nptlfreeres vars events version pt-interp \ pthread_once \ old_pthread_atfork \ pthread_getcpuclockid \ - shm-directory \ sem_init sem_destroy \ sem_open sem_close sem_unlink \ sem_getvalue \ |