diff options
| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2014-01-25 23:35:28 -0500 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2014-01-27 23:17:02 -0500 |
| commit | 65b3903ff576488eaabb51d3c4fbf9c73d867d7c (patch) | |
| tree | 0343e9d79057f6ca67acb87d6cc06f45ab7a1384 /.gitignore | |
| parent | 8e33886ec582336564ae11b80023abe93d7599c0 (diff) | |
journal: guarantee async-signal-safety in sd_journald_sendv
signal(7) provides a list of functions which may be called from a
signal handler. Other functions, which only call those functions and
don't access global memory and are reentrant are also safe.
sd_j_sendv was mostly OK, but would call mkostemp and writev in a
fallback path, which are unsafe.
Being able to call sd_j_sendv in a async-signal-safe way is important
because it allows it be used in signal handlers.
Safety is achieved by replacing mkostemp with open(O_TMPFILE) and an
open-coded writev replacement which uses write. Unfortunately,
O_TMPFILE is only available on kernels >= 3.11. When O_TMPFILE is
unavailable, an open-coded mkostemp is used.
https://bugzilla.gnome.org/show_bug.cgi?id=722889
Diffstat (limited to '.gitignore')
| -rw-r--r-- | .gitignore | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/.gitignore b/.gitignore index 36b91b4a7d..271f225465 100644 --- a/.gitignore +++ b/.gitignore @@ -33,7 +33,7 @@ /hostnamectl /install-tree /journalctl -/libsystemd-login.c +/libsystemd-*.c /libtool /localectl /loginctl @@ -184,6 +184,7 @@ /test-strxcpyx /test-tables /test-time +/test-tmpfiles /test-udev /test-unit-file /test-unit-name |