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| author | Keir Fraser <keir.fraser@citrix.com> | 2010-04-12 17:41:05 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2010-04-12 17:41:05 +0100 |
| commit | 25887df0dea37702586c16e1baf6681ed3ecd8de (patch) | |
| tree | d2592225bcffb6d4fdc3c8abf92543a7c0b642dc /tools/libxl/libxl_utils.h | |
| parent | 567326149cc6d9ba51e881604f3434f61a114f9d (diff) | |
| download | xen-25887df0dea37702586c16e1baf6681ed3ecd8de.tar.gz xen-25887df0dea37702586c16e1baf6681ed3ecd8de.tar.bz2 xen-25887df0dea37702586c16e1baf6681ed3ecd8de.zip | |
libxl: Expose functions for helping with subprocesses.
* Expose libxl_fork in libxl_utils.h
* Expose libxl_pipe in libxl_utils.h
* Make libxl_exec put SIGPIPE back (so that libxl callers may
have SIGPIPE ignored)
xl would like to use libxl_fork (which is like fork(2) except that it
logs errors) and also a similar function libxl_pipe. So put these in
libxl_utils.[ch] and use them in libxl.c as appropriate, to avoid
having to duplicate code between xl and libxl.
Also, make sure that subprocesses spawned by libxl have SIGPIPE set
back to SIG_DFL as they are entitled to expect. This means that a
libxl caller which sets SIGPIPE to SIG_IGN is no longer buggy. (This
is relevant for xl migration, because xl would like to be such a
caller.)
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Diffstat (limited to 'tools/libxl/libxl_utils.h')
| -rw-r--r-- | tools/libxl/libxl_utils.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/libxl/libxl_utils.h b/tools/libxl/libxl_utils.h index 65e7e31d23..fe8b975fcd 100644 --- a/tools/libxl/libxl_utils.h +++ b/tools/libxl/libxl_utils.h @@ -44,5 +44,9 @@ int libxl_write_exactly(struct libxl_ctx *ctx, int fd, const void *data, * logged using filename (which is only used for logging) and what * (which may be 0). */ +pid_t libxl_fork(struct libxl_ctx *ctx); +int libxl_pipe(struct libxl_ctx *ctx, int pipes[2]); + /* Just like fork(2), pipe(2), but log errors. */ + #endif |